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Mendeley Climate Change Library
by Tatiana Ortega-Gómez; Miguel A. Pérez-Martín; Teodoro Estrela
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Droughts are one of the gravest natural threats currently existing in the world and their occurrence and intensity might be exacerbated in the coming years due to climate change. The severe impacts that droughts cause to inland water resources and to the associated socio-economic activities justify the continuous monitoring of the drought. The case study presented shows a practical application of a distributed drought monitoring system implemented in a real river basin district, the Júcar...
Topics: drought indices, prolonged drought, remote sensing
Mendeley Climate Change Library
by R. P. Rötter; M. Appiah; E. Fichtler; K. C. Kersebaum; M. Trnka; M. P. Hoffmann
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Climate change implies higher frequency and magnitude of agroclimatic extremes threatening plant production and the provision of other ecosystem services. This review is motivated by a mismatch between advances made regarding deeper understanding of abiotic stress physiology and its incorporation into ecophysiological models in order to more accurately quantifying the impacts of extreme events at crop system or higher aggregation levels. Adverse agroclimatic extremes considered most detrimental...
Topics: Drought, Heat, Heavy rain
Mendeley Climate Change Library
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To prevent soil erosion and improve ecological environment over the Loess Plateau, the Chinese Government implemented a large scale ecological restoration (ER) in the past decades. ER activities have successfully reduced soil erosion and expanded vegetation, and also changed the water-energy balance, which would alter the hydrological dryness conditions. Knowledge of the impacts of land surface changes on hydrological dryness is essential for ER-related policy making and management. However, so...
Topics: Climate change, Drought, Ecohydorology, Ecological restoration
Mendeley Climate Change Library
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Streamflow reconstructions based on paleoclimate proxies provide much longer records than the short instrumental period records on which water resource management plans are currently based. In Australia there is a lack of in-situ high resolution paleoclimate proxy records, but remote proxies with teleconnections to Australian climate have utility in producing streamflow reconstructions. Here we investigate, via a case study for a catchment in eastern Australia, the novel use of an Antarctic...
Topics: Budyko, Drought, Floods, Paleoclimate, Reconstruction, Streamflow
Mendeley Climate Change Library
by Gabriela Quiroga; Gorka Erice; Ricardo Aroca; Ángel María Zamarreño; José María García-Mina; Juan Manuel Ruiz-Lozano
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Climate change is leading to the intensification of drought effects worldwide, which considerably reduce crop production. A better understanding of the drought-tolerance mechanisms would lead into a more productive agriculture. The arbuscular mycorrhizal (AM) symbiosis has been shown to improve plant tolerance to drought. Salicylic acid (SA) is a phenolic compound involved in many aspects of plant growth and development. Apart from its role in biotic interactions, it is also involved in the...
Topics: Aquaporin, Drought, Root hydraulic conductivity
Mendeley Climate Change Library
by Shifa Mathbout; Joan A. Lopez-Bustins; Javier Martin-Vide; Joan Bech; Fernando S. Rodrigo
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This paper analyses the observed spatiotemporal characteristics of drought phenomenon in Syria using the Standardised Precipitation Index (SPI) and the Standardised Precipitation Evapotranspiration Index (SPEI). Temporal variability of drought is calculated for various time scales (3, 6, 9, 12, and 24 months) for 20 weather stations over the 1961–2012 period. The spatial patterns of drought were identified by applying a Principal Component Analysis (PCA) to the SPI and SPEI values at...
Topics: Climate regionalization, Drought, SPEI, SPI, Syrian conflict
Mendeley Climate Change Library
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In many temperate parts of the world, supplemental irrigation is crucial to assure both crop yield and quality. Climate change could increase the risks of irrigation being restricted by increasing crop water requirements and/or decreasing water availability. In England, water abstraction for irrigation is limited by maximum annual volumetric limits, as specified in the abstraction licences, and surface water abstraction restrictions imposed by the regulator during drought. This paper assesses...
Topics: Adaptation, Drought, England, Irrigated agriculture, Resilience, Risk
Mendeley Climate Change Library
by Rachael H. Nolan; Jennifer Sinclair; David J. Eldridge; Daniel Ramp
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Carbon abatement schemes that reduce land clearing and promote revegetation are now an important component of climate change policy globally. There is considerable potential for these schemes to operate in drylands which are spatially extensive. However, projects in these environments risk failure through unplanned release of stored carbon to the atmosphere. In this review, we identify factors that may adversely affect the success of vegetation-based carbon abatement projects in dryland...
Topics: Aridity, Drought, Grazing, Primary productivity, Wildfire
Mendeley Climate Change Library
by Dengming Yan; Denghua Yan; Xinshan Song; Zhilei Yu; Dou Peng; Xu Ting; Baisha Weng
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The study aims to investigate the effects of different drought treatments on the distribution of soil nematode community under the background of global warming. Light drought, moderate drought, severe drought treatments and control plot were set in the experiment. Experimental results showed that a total of 32 genera of nematodes from 18 families were identified under the four drought treatments, including 13 genera of bacterivores, 10 genera of plant-parasites, 4 genera of fungivores and 5...
Topics: Agro-ecosystem, Diversity, Drought, Soil nematode
Mendeley Climate Change Library
by Indira Paudel; Moshe Halpern; Yael Wagner; Eran Raveh; Uri Yermiyahu; Guenter Hoch; Tamir Klein
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Tree growth enhancement under elevated [CO2] is much smaller than originally anticipated; yet carbon overabundance can lead to increased wood carbon storage and to stomatal downregulation and hence reduced water-use. Notably, all three outcomes increase tree drought resistance. Here we studied growth, water relations, and nonstructural carbohydrates of 60 lemon saplings growing in CO2-controlled rooms at the same greenhouse, under 400, 650, and 850 ppm [CO2]. At each [CO2] level, 10 saplings...
Topics: CO2, Drought resistance, Stomatal adjustment, Storage carbohydrates
Mendeley Climate Change Library
by Sergio Tombesi; Tommaso Frioni; Stefano Poni; Alberto Palliotti
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Frequency of extreme drought events are expected to increase due to climate change. Perennials are increasingly exposed to recurrent drought during their life span. The aim of the present work was to study the effect of recurrent droughts on the behavior of Vitis vinifera under water stress. Sangiovese and Montepulciano vines were exposed to severe drought stress for 4 years (WS-S). A dry-down experiment was carried out to compare their behavior with a set of vines kept at 90% field capacity...
Topics: Climate change, Drought, Embolism, Stress priming, Vitis vinifera
Mendeley Climate Change Library
by Cátia Brito; Lia Tânia Dinis; Helena Ferreira; Luís Rocha; Ivo Pavia; José Moutinho-Pereira; Carlos M. Correia
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Regarding the foreseeing climate change is reasonable to expect harmful consequences to olive tree (Olea europaea L.), an iconic species of Mediterranean region. Thus, the selection of practices that allow a better drought resistance and recovery capacity needs the immediate attention of scientific community. This study evaluates the strategies adopted by young potted olive trees, subjected to three cycles of drought and rewatering, in the presence of a reflective clay, kaolin (KL). The results...
Topics: Antioxidants, Drought, Mitigation strategies, Oxidative stress, Photosynthesis, Recovery
Mendeley Climate Change Library
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Climate change is predicted to result in more severe weather events, including drought, which will affect forage production in agricultural grasslands. We evaluated the effects of an experimentally imposed drought on yields of monocultures and mixtures of intensively managed grassland communities comprising four species with contrasting functional traits (Lolium perenne L., Cichorium intybus L., Trifolium repens L., Trifolium pratense L.). Complete exclusion of precipitation was implemented in...
Topics: Climate change, Disturbance, Drought, Mixture, Monoculture, Yield
Mendeley Climate Change Library
by Zhibin He; Jun Du; Longfei Chen; Xi Zhu; Pengfei Lin; Minmin Zhao; Shu Fang
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Phenological responses of terrestrial ecosystems to climate extremes are of growing concern due to the increasing frequency and intensity of extreme climatic events associated with climate change which will in turn affect vegetation seasonality more than gradual changes. However, studies are rare in arid mountain regions where plant development is commonly regulated by both temperature and precipitation. To better understand how arid mountain (AM) ecosystems may respond to climate anomalies, we...
Topics: Arid mountain ecosystems, Drought, Spring phenology, Warming
Studies on the impacts of drought usually make the implicit assumption that there will always be a negative effect on the environment, the economy and society. However, other approaches, based for example on the framework provided by the consumer surplus theory, try to focus on the distributive effects of drought. In this paper, in the wake of such approaches, we address the question of the distributive effects of drought on agriculture, exploring and studying in depth the characteristics, the...
Topics: Agriculture, Consumer surplus, Distributive effects, Drought, Social justice
Mendeley Climate Change Library
by Alnail Mohmmed; Jianhua Li; Joshua Elaru; Mohammed M.A. Elbashier; Saskia Keesstra; Cerdà Artemi; Kabenge Martin; Makomere Reuben; Zeben Teffera
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Agricultural productivity in rural areas is severely affected by climate variability, and this elevates the vulnerability of rural households to food insecurity. This study examines the socio-economic vulnerability of farmers who are susceptible to droughts in the five agricultural-based regions of Gadaref, Eastern Sudan. A survey was carried out in 500 households to collect data on socio-economic and livelihood indicators. The data analyzed from these indicators were used to generate the three...
Topics: Adaptive capacity, Drought, Exposure, Gadaref region, Sudan, Vulnerability
Mendeley Climate Change Library
by Alberto Arzac; Elena A. Babushkina; Patrick Fonti; Viktoriya Slobodchikova; Irina V. Sviderskaya; Eugene A. Vaganov
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Climate affects wood formation with consequences for the functioning and survival of trees. Since tree-rings tissues (i.e., earlywood and latewood) are formed at different time in the season, the impact of climate change might differently affect their functions. In this study, we combine quantitative tracheid anatomy with the Vaganov-Shashkin growth model (VS-model) to investigate how summer drought affected the annual ring structure of Pinus sylvestris L. from a forest-steppe zone in Southern...
Topics: Climate change, Drought, Tracheidogram, VS-oscilloscope, Xylem anatomy
Mendeley Climate Change Library
by Cátia Brito; Lia Tânia Dinis; Helena Ferreira; José Moutinho-Pereira; Carlos Correia
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The climate change scenarios besides foreseeing a severe drought imposition also emphasize the temperature rising in the Mediterranean region, with special prominence at nighttime. Despite the high olive tree tolerance to severe environmental conditions, stomatal nighttime water loss can change plant water relations, and the related consequences and opportunities, especially under water scarcity, must be clarified. A set of 3-year-old potted olive trees were subjected to three cycles of...
Topics: Drought, Nocturnal warming, Olive tree, Stomatal opening, Transpiration
Mendeley Climate Change Library
by Marcela Hlaváčová; Karel Klem; Barbora Rapantová; Kateřina Novotná; Otmar Urban; Petr Hlavinka; Pavlína Smutná; Vladimíra Horáková; Petr Škarpa; Eva Pohanková; Markéta Wimmerová; Matěj Orság; František Jurečka; Miroslav Trnka
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Heat waves and drought periods are expected to become more frequent due to climate change. This may cause a critical decline in future crop yields. However, insufficient knowledge of the interactive effects of high temperature and drought stress at specific growth stages is the cause of numerous uncertainties in modeling impacts of climate change on field crop growth and yield. Hence, the aim of this study was to investigate the effects of interactions between the short-term exposure (3 and 7...
Topics: Drought stress, Heat stress, Photosynthesis, Triticum aestivum, Yield formation
Mendeley Climate Change Library
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Effects of climate change on managed grassland carbon (C) fluxes and biomass production are not well understood. In this study, we investigated the individual and interactive effects of experimental warming (+3 °C above ambient summer daily range of 9–12 °C), supplemental precipitation (333 mm +15%) and drought (333 mm −23%) on plant biomass, microbial biomass C (MBC), net ecosystem exchange (NEE) and dissolved organic C (DOC) flux in soil cores from two upland grasslands of different...
Topics: Biomass productivity, Carbon flux, Climate change, Drought, Warming
In the floodplains of Bolivia's western highlands, or Altiplano, farmers, herders, and fishers maintain their livelihoods at water-land interfaces that are riddled with disaster risk. This paper draws on 13 months of fieldwork in the region as well as contemporary press accounts to explore water-land disasters in the Desaguadero River floodplain and Lake Poopó watershed. My analysis builds on Henri Lefebvre's notion of rhythm to articulate a “politics of cyclic dissonance” – struggles...
Topics: Bolivia, Climate change, Drought, Flood, Lake Poopó, Water
Mendeley Climate Change Library
by Li Jiang; Xinxin Huang; Fangtian Wang; Yingcheng Liu; Pingli An
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Ecological vulnerability assessment is essential to environmental and resource management, especially given recent global warming concerns. However, evaluation of ecological vulnerability over large areas is difficult and complex because it is affected by many variables, including natural factors and human activities. Here, we propose a novel method to evaluate the vulnerability of an eco-environment with a typical ecologically fragile region, the northern and southern foothills of the Yinshan...
Topics: Climate drought, IPCC framework, Remote sensing, Sensitivity, Vulnerability
Mendeley Climate Change Library
by Peipei Xu; Tao Zhou; Xiang Zhao; Hui Luo; Shan Gao; Zheng Li; Leyao Cao
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Global climate change leads to gradual increases in the frequency, intensity, and duration of extreme drought events. Human activities such as afforestation and deforestation have led to spatial variation in forest structure, causing forests to exhibit an age-spatial structure relationship. Thus, it is of great importance to accurately evaluate the effects of drought stress on forest ecosystems with different forest age structures. Because the spatial heterogeneity varies with drought stress...
Topics: Drought, EVI, EVI deficit, Forest, Forest age, Yunnan
Mendeley Climate Change Library
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As a critical link between carbon and water cycles, water use efficiency (WUE) is an important metric for assessing ecosystem response to climate change. However, the controlling mechanism of WUE is still unclear because a number of environmental factors are usually cross-correlated in natural systems. Using the structural equation modeling (SEM) method, this study investigated the seasonal and inter-annual variations of WUE and their controlling mechanism based on 10 years of eddy covariance...
Topics: Drought effects, Eddy covariance, Indirect effect, Structural equation modeling
Analysis of the urban climate changing is the basis for the implementation of stormwater management measures. This study analyzed the climate conditions of 230 cities in the Hebei and Guangdong provinces from 1958 to 2016, and then discussed stormwater management of these cities. The results demonstrated the following: (1) The climatic indicators differed significantly between the two provinces. These indicators include the aridity index, annual average potential evapotranspiration,...
Topics: Climate change, Drought, Flooding, Low Impact Development, Stormwater management
The Mediterranean region of central Chile is experiencing extensive “mega-droughts” with detrimental effects for the environment and economy of the region. In the northern hemisphere, nitrogen (N) limitation of Mediterranean ecosystems has been explained by the decoupling between N inputs and plant uptake during the dormant season. In central Chile, soils have often been considered N-rich in comparison to other Mediterranean ecosystems of the world, yet the impacts of expected...
Topics: Denitrification, Diazotrophic activity, Net N mineralization, Summer drought, Water limitation
Mendeley Climate Change Library
by Cristian Gheorghe Sidor; Michal Bosela; Ulf Büntgen; Radu Vlad
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Understanding and unravelling the direct and indirect effects of ongoing and predicted climate change on the vitality and productivity of Scots pine forests is particularly important for Romania and other parts of eastern Europe, where the species represents an essential ecological and economic value. Here, we introduce the first nation-wide network of 34 Scots pine chronologies of basal area increment (BAI), and assess the species’ vulnerability to climate change. Temperatures of the...
Topics: Biomass productivity, Climate change, Drought risk, Scots pine, Tree rings
Mendeley Climate Change Library
by D. Mbodj; B. Effa-Effa; A. Kane; B. Manneh; P. Gantet; L. Laplaze; A. G. Diedhiou; A. Grondin
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Rice is one of the most consumed crop around the globe and its production needs to be increased in a context of climate change and water scarcity. Rice roots, as most land plants, can establish symbiotic association with arbuscular mycorrhizal fungi (AMF). Rice has emerged, in the past decade, as a model to study the molecular determinants of AM symbiosis establishment and functioning, providing insight into potential breeding target to improve the capacity of this crop to interact with AMF....
Topics: Arbuscular mycorrhizal fungi (AMF), Breeding, Drought, Phosphate, Rice, Roots, Salt
Mendeley Climate Change Library
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The mechanisms of plant photosynthetic acclimation to drought remains incomplete. We examined the photosynthetic performance through plant photosystem-fluorescence response to a long-lasting, anomalous summer drought (i.e., lasting for 61 days, with soil water content
Topics: Chlorophyll fluorescence, Drought response, Photosynthetic acclimation, Recovery rate, Shrubs
Mendeley Climate Change Library
by Ismael Aranda; David Sánchez-Gómez; Estrella Cadahía; Brígida Fernández de Simón
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The genetic variability within a plant species or population determines the extent to which drought impacts plant function at different levels of biological organization. By disentangling the extent to which drought tolerance is genetically determined within a population, we can get insights of the adaptive capacity of species to cope with climate change at the local scale. We compared the ecophysiological and leaf metabolic responses of different maternal families from a single population of...
Topics: Amino-acids, Beech, Carbohydrates, Drought, Fagus sylvatica, Gas exchange
Mendeley Climate Change Library
by Joshua Elliott; Cynthia Rosenzweig; Leonard A. Smith; Ian Foster
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Process-based agricultural models, applied in novel ways, can reproduce historical crop yield anomalies in the US, with median absolute deviation from observations of 6.7% at national-level and 11% at state-level. In seasons for which drought is the overriding factor, performance is further improved. Historical counterfactual scenarios for the 1988 and 2012 droughts show that changes in agricultural technologies and management have reduced system-level drought sensitivity in US maize production...
Topics: Adaptation, Agriculture, Climate extremes, Drought impacts, Seasonal prediction
Mendeley Climate Change Library
by Leocadia Caminero; Mar Génova; J. Julio Camarero; Raúl Sánchez-Salguero
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Climate warming and increasing aridity may negatively impact forest productivity across southern Europe. A better understanding of growth responses to climate and drought in southernmost populations could provide insight on the vulnerability of those forests to aridification. Here we investigate growth responses to climate and drought in nine Pinus pinaster (maritime pine) stands situated in Andalusia, southern Europe. The effect of climatic variables (temperatures and precipitation) and...
Topics: Andalusia, Climate change, Dendroecology, Drought, Maritime pine, SPEI
Mendeley Climate Change Library
by Ehsan Eyshi Rezaei; Stefan Siebert; Frank Ewert; Remy Manderscheid; Johannes Müller; Amirhossein Mahrookashani; Brigitte Ehrenpfordt; Josephine Haensch; Hans Joachim Weigel
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Previous studies suggested a wide range of sensitivities of wheat yields to heat stress around anthesis. The aim of this study was to improve the understanding of the reasons of the disagreement by testing the response of wheat yield and yield components to differences in the method of heating, the temperature measurement point and soil substrate under sole heat and combined heat and drought stress around anthesis. Growth chamber experiments performed at different sites showed that increasing...
Topics: Experimental setup, Heat and drought stress, Pot experiments, Wheat, Yield components
Mendeley Climate Change Library
by C. M. Tfwala; L. D. van Rensburg; R. Schall; P. Dlamini
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With drought expected to increase in frequency and severity as a result of climate change, drought and rainfall variability assessments at interannual time scales using long-term rainfall data are necessary to develop drought mitigation strategies and planning measures, especially in semi-arid and arid environments where drought impact is expected to be adverse. The objective of this study was to determine the occurrence and severity of droughts and interannual rainfall variability trends in...
Topics: Drought, Ghaap plateau, Interannual rainfall variability, Spline smoother, Standardized...
Water shortage appears to be expedited under the current climate change scenario worldwide. The present work was aimed to investigate the effects of zinc-chelated lysine (Zn-Lys) on germination and yield of water stressed radish plants. The research was comprised of two studies where the effect of Zn-Lys seed priming on germination attributes under PEG-induced water stress was investigated in the first experiment. In the second experiment, growth, physio-biochemical, and yield responses of...
Topics: Antioxidants, Bio-fortification, Drought, Nutrient dynamics, Nutritional quality, Plant biomass
Mendeley Climate Change Library
by Paulo Cardoso; Artur Alves; Paulo Silveira; Carina Sá; Cátia Fidalgo; Rosa Freitas; Etelvina Figueira
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The demand for food with high nutritional value that can sustain the growth of human population while safeguarding sustainability deserves urgent attention. A possible strategy is the inoculation of crops with plant growth promoting (PGP) bacteria. Plants are naturally colonized by bacteria that can exert beneficial effects on growth and stress tolerance. N2 fixation by rhizobia in the root nodules of legumes is a well-known PGP effect. These bacteria can be used as inoculants to boost legumes...
Topics: Climate change, Drought, Endophytic bacteria, Plant growth promotion, Wild legumes
Mendeley Climate Change Library
by Tianyang Li; Siyue Li; Richard T. Bush; Chuan Liang
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Silicon and carbon geochemical linkages were usually regulated by chemical weathering and organism activity, but had not been investigated under the drought condition, and the magnitude and extent of drought effects remain poorly understood. We collected a comprehensive data set from a total of 13 sampling sites covering the main water body of the largest freshwater lake system in Australia, the Lower Lakes. Changes to water quality during drought (April 2008–September 2010) and post-drought...
Topics: Bicarbonate, Climate change, Dissolved silica, Drought, Geochemical linkages, Water quality...
Mendeley Climate Change Library
by Andrew F. Le Brocque; Jarrod Kath; Kathryn Reardon-Smith
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Chronic groundwater decline is a concern in many of the world's major agricultural areas. However, a general lack of accurate long-term in situ measurement of groundwater depth and analysis of trends prevents understanding of the dynamics of these systems at landscape scales. This is particularly worrying in the context of future climate uncertainties. This study examines long‐term groundwater responses to climate variability in a major agricultural production landscape in southern...
Topics: Aquifer recharge/depletion, Climate extremes, Drought, Groundwater decline, Groundwater extraction
Mendeley Climate Change Library
by Jin Tao Li; Jun Jian Wang; De Hui Zeng; Shan Yu Zhao; Wan Ling Huang; Ya Lin Hu
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Global climate change is projected to intensify soil drying-rewetting (DRW) events with extended drought, especially in arid and semiarid ecosystems. However, the extent to which the soil DRW with intensified drought can alter soil respiration (R s ) in forests is still under debate, and subsequent legacy effects on R s are not well understood. Here, we conducted a 180-d soil incubation experiment to investigate how soil DRW with different drought intensities alter the R s in poplar (Populus...
Topics: Drought, Drying-rewetting, Legacy effect, Semi-arid region, Soil respiration
Mendeley Climate Change Library
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Accurately assessing the impact of climate changes on tree growth or forest productivity is vital to better understand global carbon cycles. Here, we carried out dendroclimatological research on Yezo spruce (Picea jezoensis var. microsperma) along an elevation gradient in two sites to investigate the effect of rapid warming on spruce growth in northeast China. Results indicated that trees at two low-elevation sites had significantly wider ring widths and higher basal area increment (BAI)...
Topics: Basal area increment, Dendrochronology, Drought, Elevation gradient, Growth decline
Mendeley Climate Change Library
by Kristen Carlson; Leland C. Bement; Brian J. Carter; Brendan J. Culleton; Douglas J. Kennett
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Stable carbon (δ13C) and nitrogen (δ15N) isotope ratios from bison bone collagen recovered from Paleoindian bison kill sites provide a record of the B/A, YD, and EH climates in the North American southern Plains. This record is compared to the stable C isotopes derived from previously published, dated paleosols from the region. Together these data sources define a local response of the southern Plains grassland structure to the changing climatic conditions, specifically temperature and...
Topics: Bison antiquus, Clovis drought, Paleoindians, Stable isotopes, Younger Dryas
Mendeley Climate Change Library
by Pingping Luo; Meimei Zhou; Hongzhang Deng; Jiqiang Lyu; Wenqiang Cao; Kaoru Takara; Daniel Nover; S. Geoffrey Schladow
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The importance of water quantity for domestic and industrial water supply, agriculture, and the economy more broadly has led to the development of many water quantity assessment methods. In this study, surface flow and soil water in the forested upper reaches of the Yoshino River are compared using a distributed hydrological model with Forest Maintenance Module under two scenarios; before and after forest maintenance. We also examine the impact of forest maintenance on these variables during...
Topics: Climate change, Drought, Forest maintenance, Soil water, Surface flow
Meteorological droughts can have unexpected cascading consequences on social, economic, and environmental systems, which depend on the starting conditions of affected systems, and on natural and human drivers. In coastal areas, droughts propagate their effects to coastal aquifers, causing exacerbation of withdrawals with consequent worsening of groundwater quality and quantity. Considering the area of Lecce province (Salento peninsula, Apulia region, Southern Italy), the study outlines the...
Topics: Climate change, Coastal aquifer, Drought, Scenario building, Water crisis
Mendeley Climate Change Library
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The impact of climate variability on the Net Primary Productivity (NPP) of different land cover types and the reaction of NPP to drought conditions are still unclear, especially in Sub-Saharan Africa. This research utilizes public-domain data for the period 2000 through 2013 to analyze these aspects for several land cover types in Sudan and Ethiopia, as examples of data-scarce countries. Spatio-temporal variation in NPP, water use efficiency (WUE) and carbon use efficiency (CUE) for several...
Topics: Carbon use efficiency, Climate variability, Drought, Remote sensing, Water use efficiency
In the Mediterranean area, changes in crop production and quality are expected in the future, due to one or more stress factors associated with climate change. Among them, plant responses to atmospheric CO2 concentration increases, enhanced temperatures and scarce water availability are a matter that deserves further investigation. In this study, the effects of the three above-mentioned factors, acting individually and/or in interaction, on grapevine reproductive growth and berry quality were...
Topics: Climate change, Drought, Elevated CO2, Grapevine quality, Red and white Tempranillo
Mendeley Climate Change Library
by Maria A. Tsiafouli; Nikolaos Monokrousos; Stefanos P. Sgardelis
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We investigated the effect of drought in spring (earlier onset of summer drought) on litter decomposition in a Mediterranean pine forest, in Greece. We exposed litterbags filled with decomposed or fresh pine litter in the forest floor from January to November and simulated drought from April to May (season with usually high activity in soil). The drought treatment resulted in a significant increase of microbial respiration and litter weight loss and a decrease of microbial C. Both litter types...
Topics: Climate change, Decomposition, Legacy effects of drought, Pinus brutia, Soil carbon
Mendeley Climate Change Library
by Aiping Wang; Shu Kee Lam; Xingyu Hao; Frank Yonghong Li; Yuzheng Zong; Heran Wang; Ping Li
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Soybean (Glycine max (L.) Merr.) is the world's most important grain legume. The impacts of climate change such as elevated CO 2 and drought on soybean physiological and morphological responses are not well understood. This study evaluated the effects of elevated CO 2 (ambient concentration + 200 mmol mol −1 ) and drought stress (35–45% of relative water content) on soybean leaf photosynthesis, chlorophyll fluorescence, stress physiological indexes, morphological parameters, biomass and...
Topics: Drought stress, Elevated [CO 2 ], Oxidative stress, Photosynthesis, Soybean, Yield
Mendeley Climate Change Library
by Vipin Kumar Singh; Amit Kishore Singh; Prem Pratap Singh; Ajay Kumar
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Tomato is one of the most demanding/utilizable vegetable crops worldwide after potato. It is extensively cultivated throughout the tropics and sub-tropics around the world. However, certain climate change consequences like salinity, drought, and environmental pollutants particularly heavy metals etc., lead to low soil productivity. In fact, problem of salinity, drought and soil contamination are increasing rapidly throughout the globe and severely affecting more than 10% of arable land...
Topics: ACC deaminase, Drought, Plant growth promoting bacteria, Rhizoremediation, Salinity, Tomato
The Pacific Northwest (PNW) region of the United States has some of the most productive forests in the world. As precipitation regimes may shift with changing climate in this area, droughts are predicted to increase in both frequency and degree of severity, which will have a significant impact on already drought-prone ecosystems. When modeling ecosystem responses to drought, it is important to consider the physiology of individual tree species since the variations in drought sensitivity among...
Topics: Climate and age gradients, Drought, Pacific Northwest, Water use efficiency
Mendeley Climate Change Library
by Delphine Ly; Gaëtan Touzy; Agathe Mini; Jean Luc Jannink; Fabien Cormier; Etienne Paux; Stéphane Lafarge; Jacques Le Gouis; Gilles Charmet
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Plant breeding has always sought to develop crops able to withstand environmental stresses, but this is all the more urgent now as climate change is affecting the agricultural regions of the world. It is currently difficult to screen genetic material to determine how well a crop will tolerate various stresses. Multi-environment trials (MET) which include a particular stress condition could be used to train a genomic selection model thanks to molecular marker information that is now readily...
Topics: Drought adaptation, Factorial regression, Genomic prediction, Genotype-by-environment interaction,...
Mendeley Climate Change Library
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Mediterranean-type ecosystems (MTEs) harbor an exceptionally high biodiversity of vascular plants. At the same time, climatic conditions in many MTE regions are projected to become both drier and hotter, and fire intervals shorter. The Interval Squeeze conceptual model integrates the potential effects of a changing climate and fire regimes on perennial plant population persistence and postulates that warmer, drier conditions will negatively affect multiple plant demographic processes. Dependent...
Topics: Climate change, Drought impacts, Fire-ecology, Interval squeeze, Mediterranean-type ecosystem,...
Mendeley Climate Change Library
by Nils Hoffmann; Peter Schall; Christian Ammer; Bertram Leder; Torsten Vor
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Many non-native tree species have been introduced to Europe to improve forest productivity. It is assumed that some of these species are better able than native species to mitigate negative effects of climate change. A high growth-related tolerance to climatic extremes is essential to qualify a tree species’ suitability for cultivation and must be quantified before initiating adaptation measures. This study investigated basal area and volume increment (BAI and VI) data at various stem height...
Topics: Climate sensitivity, Drought response, Exotic tree species, Resistance, Stem analysis, Total ring...
Mendeley Climate Change Library
by Andries A. Temme; Jin Chun Liu; Will K. Cornwell; Rien Aerts; Johannes H.C. Cornelissen
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Carbon dioxide and water are crucial resources for plant growth. With anthropogenic fossil fuel emissions, CO2 availability is and has been increasing since the last glacial maximum. Simultaneously water availability is expected to decrease and the frequency and severity of drought episodes to increase in large parts of the world. How plants respond to these two changes will help in understanding plants’ responses to climate of the future. Here we sought to understand how drought affects...
Topics: Annual C3 herbs, Biomass allocation, Drought, Elevated CO2, Gas exchange, Growth, Plant traits
Mendeley Climate Change Library
by Charles Truettner; William R.L. Anderegg; John D. Shaw; Franco Biondi; George W. Koch; Kiona Ogle; Christopher Schwalm; Marcy E. Litvak; Emanuele Ziaco
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Future droughts are expected to become more severe and frequent under future climate change scenarios, likely causing widespread tree mortality in the western USA. Coping with an uncertain future requires an understanding of long-term ecosystem responses in areas where prolonged drought is projected to increase. Tree-ring records are ideally suited for this task. We developed 24 tree-ring chronologies from 20 U.S. Forest Service Forest Inventory and Analysis (FIA) plots in the southwestern USA....
Topics: Climate change, Climate interactions, Conifers, Dendroclimatology, Forest drought severity index,...
Mendeley Climate Change Library
by Zhaoli Wang; Ruida Zhong; Chengguang Lai; Zhaoyang Zeng; Yanqing Lian; Xiaoyan Bai
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Drought is expected to increase in frequency, severity, and duration in the future due to global warming and this will greatly threaten the future socio-economic development. This study evaluates the spatiotemporal variation of future drought (2016–2100) in the Pearl River Basin (PRB) using the Palmer drought severity index (PDSI), the Variable Infiltration Capacity (VIC) model, and future climate projections based on the general circulation models (GCMs) from phase 5 of the Coupled Model...
Topics: Future drought, General circulation models, PDSI, Pearl River Basin, Spatiotemporal variation, VIC
Mendeley Climate Change Library
by Ana I. García-Cervigón; Juan Carlos Linares; Miguel García-Hidalgo; J. Julio Camarero; José M. Olano
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Plants in Mediterranean mountains are particularly vulnerable to climatic change. In these environments, low temperature is combined with water shortage during summer, and as a result, the positive effect of global warming theoretically expanding the growing season length may be counterbalanced by rising drought stress. These circumstances may be exacerbated in the rear edge of species distribution, where warmer conditions occur. Here, we examined the climate-growth relationships of Juniperus...
Topics: Drought, Global warming, Juniper, Mediterranean high mountains, South Iberian Peninsula, Tree-rings
Mendeley Climate Change Library
by Dongmei Han; Guoqiang Wang; Tingxi Liu; Bao Lin Xue; George Kuczera; Xinyi Xu
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A warming climate is expected to perturb the hydrological cycle, resulting in changes to both the frequency and duration of drought, especially in arid and semiarid grassland. Although considerable attention has been paid to the responses of key water fluxes to severe drought, few have explored the effects of prolonged drought on evapotranspiration (ET), its partitioning into vegetation transpiration (T) and soil evaporation (E), and its relationship with vegetation productivity. In this study,...
Topics: ET partitioning, Prolonged drought, Semiarid grassland, Underlying water use efficiency (uWUE),...
Mendeley Climate Change Library
by Yingying Xie; Xiaojing Wang; Adam M. Wilson; John A. Silander
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Shifts in the timing of autumnal leaf coloration and leaf drop in temperate forests with climate change can have substantial impacts on community and ecosystem processes (e.g. altered carbon/nitrogen cycling and biotic interactions). However, the environmental control of autumn phenology remains significantly understudied in striking contrast to spring phenology. In this study, we used linear mixed effects model with ground-based phenology observations in northeastern USA and found that both...
Topics: Drought, Extreme weather events, Heat stress, Leaf coloration, Leaf drop, Species-specific response
Mendeley Climate Change Library
by Freddie Mpelasoka; Joseph L. Awange; Rodrigo Mikosz Goncalves
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Changes in drought around the globe are among the most daunting potential effects of climate change. However, changes in droughts are often not well distinguished from changes in aridity levels. As drought constitutes conditions of aridity, the projected declines in mean precipitation tend to override changes in drought. This results in projections of more dire changes in drought than ever. The overestimate of changes can be attributed to the use of ‘static’ normal precipitation in the...
Topics: Drought management, Dynamic normal precipitation, Precipitation decline, Static normal...
Mendeley Climate Change Library
by Shide Huang; Kaituan Chen; Xia Xu; Honghua Ruan; Fanglin Tan; Han Y.H. Chen
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Both increasing frequency of drought and drought duration are expected for many terrestrial ecosystems under on-going climate change. However, our understanding of the drought effect on soil respiration (R s ), which comprises the second largest carbon (C) flux of the global C cycle, remains limited. To explore the effects of reduced precipitation on R s and its components, we conducted an experiment of throughfall rainfall exclusion during two consecutive growing seasons in a subtropical...
Topics: Autotrophic soil respiration, Fine root, Heterotrophic soil respiration, Microbial biomass carbon,...
Mendeley Climate Change Library
by Miquel De Cáceres; Nicolas Martin-StPaul; Marco Turco; Antoine Cabon; Victor Granda
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High-resolution meteorological data are necessary to understand and predict climate-driven impacts on the structure and function of terrestrial ecosystems. However, the spatial resolution of climate reanalysis data and climate model outputs is often too coarse for studies at local/landscape scales. Additionally, climate model projections usually contain important biases, requiring the application of statistical corrections. Here we present ‘meteoland’ an R package that integrates several...
Topics: Bias correction, Climate change, Drought stress, Regional climate model, Statistical downscaling,...
Mendeley Climate Change Library
by J. Aldea; F. Bravo; J. Vázquez-Piqué; A. Rubio-Cuadrado; M. del Río
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Climate change forecasts are particularly severe for the western Mediterranean Basin, where rising temperatures and decreased precipitation could increase the frequency of drought events. Understanding the specific weather drivers of radial variation in Mediterranean mixed forest stands will allow us to better predict the ecological and production alterations that may result from climate change. Here, we studied species differences in stem daily radial variation cycles and daily radial...
Topics: Climate change, Drought, High-resolution dendrometers, Pinus pinaster, Quercus pyrenaica, Tree...
This study investigates how technological transitions across California's power sector have shifted its state-level carbon dioxide emissions and cooling water consumption intensities. Its ultimate goal is to evaluate how the state's climate mitigation and environmental policies have affected the power sector's vulnerability to extreme drought and how extreme drought has affected progress towards the state's climate mitigation priorities. The study analyzes the period spanning 2010–2016, which...
Topics: CO2 emissions, Climate change mitigation, Cooling water consumption, Drought resiliency,...
Mendeley Climate Change Library
by Charlotte Grossiord; Sanna Sevanto; Jean Marc Limousin; Patrick Meir; Maurizio Mencuccini; Robert E. Pangle; William T. Pockman; Yann Salmon; Roman Zweifel; Nate G. McDowell
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Tree transpiration depends on biotic and abiotic factors that might change in the future, including precipitation and soil moisture status. Although short-term sap flux responses to soil moisture and evaporative demand have been the subject of attention before, the relative sensitivity of sap flux to these two factors under long-term changes in soil moisture conditions has rarely been determined experimentally. We tested how long-term artificial change in soil moisture affects the sensitivity...
Topics: Acclimation, Climate change, Drought, Irrigation, Sap flux, Vapor pressure deficit, Water use
Mendeley Climate Change Library
by Muhammad Adil Rashid; Xiying Zhang; Jørgen Eivind Olesen
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Adapting to climate change and minimizing its negative impact on crop production requires detailed understanding of the direct and indirect effects of different climate variables (i.e. temperature, VPD). We investigated the direct (via heat stress) and indirect effects (through increased VPD) of high temperature on growth, physiology and yield of two wheat cultivars (Taifun and Vinjett) at two watering levels; well-watered: WW (100% evapotranspiration (ET)) and drought stress: DS (50% of WW...
Topics: Assimilate allocation, Climate change, Drought, Heat stress, Stress tolerance, Water-use efficiency
Mendeley Climate Change Library
by Cynthia L. Pérez-Ruiz; Ernesto I. Badano; Juan P. Rodas-Ortiz; Pablo Delgado-Sánchez; Joel Flores; David Douterlungne; Jorge A. Flores-Cano
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Higher temperatures and reduced rainfalls that are expected with the advance of climate change can impair the emergence and establishment of tree seedlings in forest ecosystems. These climatic changes can also decrease the availability of soil resources and reduce the performance of seedlings. We evaluated these effects in a temperate forest from Mexico with two native oak species (Quercus crassifolia and Quercus eduardii). As recently emerged oak seedlings are highly sensitive to changing...
Topics: Drought, Growth rate, Leaf traits, Open-top chambers, Rainout shelters, Warming
Mendeley Climate Change Library
by Claudia Radel; Birgit Schmook; Lindsey Carte; Sofia Mardero
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Smallholder labor migration and its relationship to climate change adaptation has received increasing attention, with migration often represented either as part of successful adaptive livelihood diversification or as symptomatic of a lack of in-place adaptive capacity. Using a case study, we focus on the relationship between labor migration, agrarian livelihood diversification, and climate change to further a more nuanced understanding of “migration as adaptation” than is implied by a...
Topics: double exposure, drought, environmental migration, livelihood diversification, neoliberalism,...
Mendeley Climate Change Library
by He Song; Yibo Li; Li Zhou; Zhenzhu Xu; Guangsheng Zhou
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Effects of crop growth and physiological activities to drought and irrigation regimes have been extensively studied; however, the combined responses of plant growth, morphological and photosynthetic behaviors to drought episodes and thereafter rewatering receive a less attention. This field experiment was carried out directly in situ at an agricultural ecosystem research station across two entire growing seasons during 2015–2016, in northeastern China, on the renowned northeastern maize...
Topics: Climate change, Drought episode, Irrigation regimes, Leaf age, Photosynthetic potentials, Zea Mays...
Mendeley Climate Change Library
by Tadeja Savi; Francesco Petruzzellis; Stefano Martellos; Barbara Stenni; Anna Dal Borgo; Luca Zini; Klemen Lisjak; Andrea Nardini
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Ongoing variations in rainfall and temperature regimes affect the physiology and productivity of grapevines, calling for irrigation in drought-prone areas. During vintage 2015, we monitored plants water status and indirectly assessed rooting depth and exploited water sources (oxygen isotope analyses) in a mature Vitis vinifera cv. Malvasia Istriana vineyard on red soils (“terra rossa”) developed on highly permeable carbonate rocks. We also investigated effects of topsoil irrigation or late...
Topics: Drought stress, Limestone soils, Oxygen isotopes, Vitis vinifera cv. Malvasia Istriana, Water status
Mendeley Climate Change Library
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Quinoa (Chenopodium quinoa Willd.), a highly nutritious grain crop, is resistant to abiotic stresses (drought, salinity, and cold) and offers an alternate crop to endure harsh environmental conditions under the face of climate change. Naturally, quinoa genome displays a wide degree of variabilities in drought tolerance strategies. Therefore, the present study was designed to investigate drought tolerance variations and stress tolerance enhancement in four quinoa genotypes (Pichaman,...
Topics: Antioxidant enzymes, Drought stress, Inorganic ions and K+/Na+ ratio, Osmolytes, Osmotic adjustment
Mendeley Climate Change Library
by Shihab Uddin; Markus Löw; Shahnaj Parvin; Glenn J. Fitzgerald; Sabine Tausz-Posch; Roger Armstrong; Michael Tausz
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This study investigated the interactive effects of atmospheric CO2 concentration ([CO2]) and water availability on yield, root growth and water use of two canola cultivars with contrasting growth and vigour (vigorous hybrid cv. Hyola 50 and non-hybrid cv. Thumper). Plants were grown under ambient [CO2] (a[CO2], ∼400 μmol mol−1) or elevated [CO2] (e[CO2], ∼700 μmol mol−1) in a glasshouse. Two water treatments (well-watered and drought) were established in each [CO2] treatment. During...
Topics: Biomass, Climate change, Drought, Elevated [CO2], Soil water depletion, Vertical root distribution,...
Drought is a complex natural hazard that may have destructive damages on societal properties and even lives. Generally, socioeconomic drought occurs when water resources systems cannot meet water demand, mainly due to a weather-related shortfall in water supply. This study aims to propose a new method, a heuristic method, and a new index, the socioeconomic drought index (SEDI), for identifying and evaluating socioeconomic drought events on different severity levels (i.e., slight, moderate,...
Topics: A heuristic method, Climate change, East River basin, Reservoir operation, Socioeconomic drought...
Mendeley Climate Change Library
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The effects of climate change on the agricultural sector are tremendous. Thus, it is essential to determine its impacts on agricultural water resources and to minimize adverse effects on crop production. The present study aims to simulate climate data based on SRES A1B scenario from the outputs of three General Circulation Models (GCMs) namely, FGOAL, HADCM3 and IPCM4 and examine the design water requirement (DWR) of winter paddy using frequency analysis under climate change condition in...
Topics: Climate change scenario, Crop production, Design water requirement, Drought risk, Gross paddy water...
Mendeley Climate Change Library
by Koren R. Nydick; Nathan L. Stephenson; Tarin Paz-Kagan; Anthony R. Ambrose; Gregory P. Asner; Adrian J. Das; Todd Dawson; Roberta E. Martin
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Hotter droughts are becoming more common as climate change progresses, and they may already have caused instances of forest dieback on all forested continents. Learning from hotter droughts, including where on the landscape forests are more or less vulnerable to these events, is critical to help resource managers proactively prepare for the future. As part of our Leaf to Landscape Project, we measured the response of giant sequoia, the world's largest tree species, to the extreme 2012–2016...
Topics: Adaptation, Climate change, Giant sequoia, Hotter drought, Refugia, Remote sensing, Sequoia and...
Mendeley Climate Change Library
by Alexandra Medl; Florin Florineth; Silvia B. Kikuta; Stefan Mayr
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Climate change will lead to increased frequencies of weather extremes in Central Europe, such as severe heat waves and droughts, causing high stress intensities for plants. Drought stress also represents a critical factor on many re-cultivated areas with poor edaphic conditions and small soil depths. This includes living wall systems which are applied to cover shotcrete walls and re-integrate them in landscape surroundings. Due to the vertical arrangement of these systems, which limits...
Topics: Drought stress, Living wall systems, Osmotic potential, Relative water content, Stomatal...
Mendeley Climate Change Library
by Silas Michaelides; Theodore Karacostas; Jose Luis Sánchez; Adrianos Retalis; Ioannis Pytharoulis; Víctor Homar; Romualdo Romero; Prodromos Zanis; Christos Giannakopoulos; Johannes Bühl; Albert Ansmann; Andrés Merino; Pablo Melcón; Konstantinos Lagouvardos; Vassiliki Kotroni; Adriana Bruggeman
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The Mediterranean region is a unique area characterized by a large spectrum of atmospheric phenomena, some of which have a high impact on many aspects of human activities, safety and wellbeing. The area is long considered as a hot spot of such atmospheric phenomena deserving multidisciplinary scientific attention. The scientific research that has been carried out on these high impact atmospheric processes that occur in the Mediterranean area is indeed widespread and the available international...
Topics: Atmospheric chemistry, Atmospheric processes, Climate change, Drought, Dust and pollution,...
Mendeley Climate Change Library
by Josep Peñuelas; Jordi Sardans; Iolanda Filella; Marc Estiarte; Joan Llusià; Romà Ogaya; Jofre Carnicer; Mireia Bartrons; Albert Rivas-Ubach; Oriol Grau; Guille Peguero; Olga Margalef; Sergi Pla-Rabés; Constantí Stefanescu; Dolores Asensio; Catherine Preece
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Climate change is increasing temperatures globally and drought in many regions. If climate change continues at its current rate, the resilience of many ecosystems will likely be exceeded, altering their structure and function. A consistent understanding of the impacts, however, remains elusive due to the difficulty of obtaining data of field studies at different scales from local to regional. We review the impacts of climate change on terrestrial ecosystems of the Mediterranean region based...
Topics: Climate change, Community and ecosystem changes, Drought, Experiments, Long-term, Management,...
Mendeley Climate Change Library
by Yanbin Hao; Hui Zhang; Joel A. Biederman; Linfeng Li; Xiaoyong Cui; Kai Xue; Yanfen Wang
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Climate models predict a substantial increase in the frequency of extreme drought, suggesting subsequent impacts on the carbon (C) and water cycles. Although many studies have investigated the impacts of extreme drought on ecosystem functioning, it remains unknown how the timing of extreme drought within a growing season may affect carbon and water cycling. Here we conducted a 3-year field experiment to investigate the influence of seasonal drought timing on ecosystem carbon and water exchange...
Topics: Climate change, Ecosystem respiration, Extreme drought timing, Grasslands, Gross primary...
Mendeley Climate Change Library
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The OPtical TRApezoid Model (OPTRAM) has recently been proposed for estimation of soil moisture using only optical remote sensing data. The model relies on a physical linear relationship between the soil moisture content and shortwave infrared transformed reflectance (STR) and can be parameterized universally (i.e., a single calibration for a given area) based on the pixel distribution within the STR-Normalized Difference Vegetation Index (NDVI) trapezoidal space. The main motivation for this...
Topics: ASCAT, Cosmic-ray neutron soil moisture, Drought monitoring, MODIS, SMAP, SMOS, Soil moisture...