Coastal environment is a highly productive and economically important ecosystem. The oceans cover 71% of the earth surface and provide maximum benefit to human beings. The environmental conditions of coastal waters are largely governed by the seasonal and tidal cycles. Marine processes and food chains start with phytoplankton, which are chlorophyll-containing organisms. Nutrient enhancement in the seawater due to the discharge of agricultural, industrial, and urban wastes threatens the Sea...
Topics: Chlorophyll 'A', Phytoplankton.
Interrelationship between nutrients and chlorophyll-a in an urban stormwater lake during the ice-covered period * Kejian Chu 1, Yuntong She 2, Jeff Kemp 3, Mark Loewen 4, Evan Davies 5 1 College of Environment, Hohai University, Nanjing, P. R. China 1, 2, 3, 4, 5 Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada 1 E mail: kejian@ualberta.ca , 2 E mail: yuntong.she@ualberta.ca A B S T R A C...
Topics: Ice-covered, Chlorophyll-a, Nutrients, Urban Stormwater Lake.
In the present study chlorophyll, a (Chl. a) and b (Chl. b) content of ten different plants have been recorded. The qualitative difference of chlorophyll a (Chl.a) and b (Chl.b) content between young and adult leaves were observed. A total of ten plant species were selected namely Mango (Mangifera indica L.), Hibiscus (Hibiscus rosa-sinensisL.), Neem (AzadirachtaindicaJuss.), Ashoka (PolyalthialongifoliaSonner.Thw.,Enum.), vad (Ficus benghalensis L.) and Nerium (NeriumindicumMill .Gard)Datura...
Topics: Young and Adult Leaves, Plant Material & Chlorophyll a and b
Mendeley Climate Change Library
46
46
Jul 6, 2019
07/19
by
Qiang Hao; Fei Chai; Feng Zhou; Peng Xiu; Yan Bai; Jianfang Chen; Chenggang Liu; Fengfeng Le
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Satellite chlorophyll a (Chl) is an essential parameter for large-scale studies on changes in the marine ecosystem and biogeochemistry. However, in the eastern China seas (ECSs), the coexistence and interaction of turbid and clear water pose challenges to the application of standard satellite Chl products to studies on phytoplankton dynamics. Based on the empirical modification of the OC-CCI (Ocean Colour Climate Change Initiative) standard products, we herein provide a locally modified...
Topics: Biogeochemical cycle, Chlorophyll a, Eastern China seas, OC-CCI, Phytoplankton, Satellite
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169
May 2, 2016
05/16
by
IASET JOURNALS
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The cyanobacteria are an ancient group of prokaryotic organisms that are found all over the world in environments as diverse as Antarctic soils and volcanic hot springs, and often where no other vegetation can exist. Being prokaryotes they share with others of their type the lack of a nucleus and a laminated extracellular wall. Unlike photosynthetic bacteria however, cyanobacteria possess chlorophyll-a in common with photosynthetic eukaryotes, and they liberate oxygen during photosynthesis....
Topics: Cyanobacteria, Prokaryotic, Antarctic Soils, Volcanic Hot Springs, Chlorophyll-A, Symbiotic etc
The study presents the results of investigation on reaction of beech (Fagus sylvatica L.) leaves observed next year after planting seedlings in different positions in a young spruce stand located in upper mountain conditions. The methods of chemical analyses and assessments of chlorophyll fluorescence were applied with the aim to evaluate a course of leaf adaptation. In the young spruce stand located in the Karkonoše Mts, bare root beech seedlings after cultivation in full light were planted...
Topics: different light conditions, planting, Fagus sylvatica, leaves, chlorophyll a fluorescence, chemical...
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21
Mar 5, 2021
03/21
by
Marzieh Asadi; Hamid Reza Eshghizadeh
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Improving the productivity of cropping systems in terms of irrigation water use and nitrogen (N) fertilizer and exploring the associated effective physiological traits are priorities mostly in water-limited areas. Therefore, this field experiment was conducted on a clay loam soil (thermic family of Typic Haplargids) in central Iran with the three planting dates of 2016 (June 30), early 2017 (June 10), and late 2017 (July 11). Three forage sorghum genotypes including SF002, SF001, and Pegah,...
Topics: chlorophyll a/b ratio, deficit irrigation, genetic diversity, LAImax, nitrogen use efficiency
Bone Gulf and Flores Sea in the Fisheries Management Area 713 (WPP 713) are known as one of the best skipjack tuna fishing areas in Indonesia, where skipjack tuna is an export commodity and has high economic value. The potential of skipjack tuna is based on the spatial-temporal pattern of oceanographic conditions. The distribution of skipjack tuna can be predicted by the biophysical conditions of the environment. Sea surface temperature and chlorophyll-a are biophysical parameters that greatly...
Topics: skipjack tuna, sea surface temperature, chlorophyll-a, gravity center of fishing grounds, remote...
69
69
Aug 12, 2018
08/18
by
Mahendra Kumar Trivedi; Alice Branton; Dahryn Trivedi; Gopal Nayak; Mayank Gangwar; Snehasis Jana
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In the world scenario, India occupies a premier position contributing to about 43 per cent production of the cashew nut (Anacardium occidentale L.) along with export and processing. The aim is to study the impact of biofield energy treatment on selected farms for cashew farming. The control and biofield treated farms were divided as control and treated farms, and Mr. Trivedi provided the biofield energy treatment to the treated farms. Further, the plants and fruits were analyzed for overall...
Topics: Biofield Energy Treatment, Fungi, Biophoton Emission, Shelf-Life, Anacardium occidentale L.,...
Source: http://academictorrents.com/details/9c24455f5dbeeba4813132d7cf173d2c68287d4e
The Lynher Estuary in Southwest England is a small, strongly tidal sub-estuary of the Tamar Estuary. It is a Site of Special Scientific Interest (SSSI), a Marine Conservation Zone (MCZ), a part of the Plymouth Sound and Estuaries Special Area of Conservation (SAC) and a Special Protection Area (SPA). Management of the Lynher SSSI and MCZ stipulates that good water quality and sediment quality should be maintained; as such, a good understanding of its responses to influences such as climate...
Topics: Chlorophyll-a, Dissolved oxygen, Estuarine turbidity maximum, Lynher Estuary, Salinity intrusion,...
Mendeley Climate Change Library
32
32
Jul 6, 2019
07/19
by
Min Zhang; Yuanling Zhang; Qi Shu; Chang Zhao; Gang Wang; Zhaohua Wu; Fangli Qiao
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Analyses of the chlorophyll a concentration (chla) from satellite ocean color products have suggested the decadal-scale variability of chla linked to the climate change. The decadal-scale variability in chla is both spatially and temporally non-uniform. We need to understand the spatiotemporal evolution of chla in decadal or multi-decadal timescales to better evaluate its linkage to climate variability. Here, the spatiotemporal evolution of the chla trend in the North Atlantic Ocean for the...
Topics: Chlorophyll a, Dipole pattern, Multidimensional ensemble empirical mode decomposition, Propagation,...
Mendeley Climate Change Library
48
48
Jul 6, 2019
07/19
by
Leoni Mack; Raoul Marie Couture; Fabien Cremona; M. Teresa Ferreira; Michael G. Hutchins; Ute Mischke; Eugenio Molina-Navarro; Katri Rankinen; Markus Venohr; Sebastian Birk
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There are infinite possible future scenarios reflecting the impacts of anthropogenic multiple stress on our planet. These impacts include changes in climate and land cover, to which aquatic ecosystems are especially vulnerable. To assess plausible developments of the future state of European surface waters, we considered two climate scenarios and three storylines describing land use, management and anthropogenic development (‘Consensus’ ‘Techno’ and ‘Fragmented’ which in terms of...
Topics: Chlorophyll-a, Climate change, Land use change, Multiple stressors, Storylines, Total nitrogen,...
The presence of biological patches, or communities, can have a direct effect on Naval operations, scientific research, and fisheries. It is shown that remote infrared satellite sensing may be used as a real-time tool to accurately locate thermally and biologically significant features. Several physical, chemical, and biological variables were sampled in the surface layer of mesoscale thermal features which were located using satellite imagery. The bio-chemical sampling produced replicate...
Topics: Oceanography, Biological patchiness, Thermal fronts, Chemical fronts, Sea surface temperature,...
Mendeley Climate Change Library
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43
Jul 6, 2019
07/19
by
Anita Mary George; Jon Brodie; James Daniell; Angela Capper; Michelle Jonker
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Sponges play a vital role in the world's most complex and vulnerable marine ecosystems. Various in situ studies have suggested that sponge morphologies (developed from exposure to a range of biophysical factors) can be considered as ecological indicators to current detrimental environmental changes such as climate change, overfishing, pollution and dredging for coastal development. Regional and long-term taxonomic data on sponges within each geographic range is not always available, especially...
Topics: Chlorophyll a, Current, Environmental indicators, GBRMPA, Great Barrier Reef, Marine protected...
This research investigates the California Current System (CCS) utilizing Synoptic Monthly Gridded World Ocean database (SMG-WOD) for temperature and salinity profiles, MODIS-A for surface chlorophyll-a (Chl-a) concentration, and climatological indices El Nino Modoki Index (EMI) and Multivariate El Nino Southern Oscillation Index (MEI), to compare inter-annual variations. The SMG- WOD produces 3D gridded fields with 1¡_1¡ horizontal resolution and 28 vertical layers. The area of interest was...
Topics: California Current, inter-annual variability, acceleration potential, World Ocean Database (WOD),...
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2.0
Jul 2, 2022
07/22
by
Md. Sirajul Islam, Shapla Khatun, Md. Humayun Kabir, Nowara Tamanna Meghla, Md. Shakir Ahammed, Md. Enamul Hoq, Kazi Farhed Iqubal
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This study was conducted to investigate the status of water quality for fisheries and aquatic environment in Chalan Beel, the largest wetland ecosystem in Bangladesh. Water samples were collected from five sampling stations over the period from February 2020 to January 2021 during the pre-monsoon, monsoon, and post-monsoon seasons, respectively. Surface water controlling parameters such as temperature, transparency, pH, DO, TDS, EC, total hardness, total alkalinity, Chlorophyll a, and TSI of...
Topics: Temporal variation, Water quality, Trophic state index, Chlorophyll a, Chalan Beel
10
10.0
Oct 27, 2021
10/21
by
Md. Sirajul Islam, Yousuf Ali, Md. Humayun Kabir, Rofi Md. Zubaer, Nowara Tamanna Meghla, Mausumi Rehnuma, Mir Md. Mozammal Hoque
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This study was conducted to determine the suitability of water quality for fisheries management in Kaptai Lake from February 2019 to January 2020. Results showed that the temperature, transparency, TDS, pH, DO, EC, alkalinity and hardness were 20.9 to 31.8°C, 17 to 303 cm, 40 to 105 mg/L, 6.82 to 7.96, 6.1 to 7.65 mg/L, 75.33 to 172.33 µS/cm, 37 to 83 mg/L and 35 to 190 mg/L, respectively. However, nutrients as NH 3 , NO 3 -, NO 2 -, PO 4 3 - and SO 4 2 - were 0.01 to 0.05, 0.03 to 2.21, 36...
Topics: Seasonal variation, Water quality, Dissolved nutrient, Chlorophyll a, Kaptai Lake, Bangladesh
