Results 41 to 50 of about 22,909,306 (342)

Long-Term Dynamic in Nutrients, Chlorophyll a, and Water Quality Parameters in a Coastal Lagoon During a Process of Eutrophication for Decades, a Sudden Break and a Relatively Rapid Recovery

Frontiers in Marine Science, 2019
Coastal lagoons are considered among the marine habitats with the highest biological productivity, and support a great variety of human activities and pressures that make them especially vulnerable to trophic imbalances.
Á. Pérez-Ruzafa, S. Campillo, J. Fernández-Palacios, Antonio García-Lacunza, M. García-Oliva, H. Ibáñez, P. C. Navarro-Martínez, M. Pérez-Marcos, I. Pérez-Ruzafa, J. Quispe-Becerra, A. Sala-Mirete, Olga Sánchez, C. Marcos   +12 more
semanticscholar   +1 more source

The CMEMS GlobColour chlorophyll a product based on satellite observation: multi-sensor merging and flagging strategies

Ocean Science (OS), 2019
. This paper concerns the GlobColour-merged chlorophyll a products based on satellite observation (SeaWiFS, MERIS, MODIS, VIIRS and OLCI) and disseminated in the framework of the Copernicus Marine Environmental Monitoring Service (CMEMS).
P. Garnesson, A. Mangin, O. F. d'Andon, J. Demaria, M. Bretagnon   +4 more
semanticscholar   +1 more source

Picophytoplankton distribution along Khatanga Bay-shelf-continental slope environment gradients in the western Laptev Sea

Heliyon, 2021
The spatial variations of photosynthetic picoplankton abundance and biomass and the picoplankton's contribution to chlorophyll a concentration along the transect from Khatanga Bay to the continental slope in the western part of the Laptev Sea were ...
Tatiana A. Belevich, Аndrey B. Demidov, Peter N. Makkaveev, Sergei A. Shchuka, Mikhail V. Flint   +4 more
doaj  

Indirect method for quantifying the content of photosynthetic pigments in genotypes of dwarf elephant grass - doi: 10.4025/actascianimsci.v35i1.15178

Acta Scientiarum: Animal Sciences, 2012
Equations that indirectly associate the rates obtained by chlorophyll meter SPAD-502 to chlorophyll and carotenoids rates of dwarf elephant grass genotype are provided. Leaves of the genotype of dwarf elephant grass were employed.
Saulo Alberto do Carmo Araújo, Hernan Maldonado Vasquez, Alena Torres Neto, Eliemar Campostrini, Bruno Borges Deminicis, Érico da Silva Lima   +5 more
doaj   +1 more source

Preliminary hydrochemical characteristics of an urban lake restored using a sequential application of iron and aluminum coagulants

Limnological Review, 2021
A study was carried out on Lake Mielenko in Kartuzy. It is a small and shallow waterbody (7.8 ha, max. depth 1.8 m), whose morphometric conditions qualify it as a polymictic lake (the first lake in a river - lake system).
Płachta Anna
doaj   +1 more source

Study some of Garden Cress (Lepidium sativum L.) Physiological Traits at Levels of Irrigation and Ascorbic Acid [PDF]

Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī, 2017
Drought seriously reduces the quality and quantity of agronomic and horticultural plants. In such condition, using factors to reduce these effects on plants is indispensible. To evaluate the effect of water stress and different levels of ascorbic acid on
Zohre Akbari, Mansour Fazeli Rostampour, Leyla Zeya ebrahimi, Mohamad Reza Naroeirad   +3 more
doaj  

Long-Term Trends and Impact of SARS-CoV-2 COVID-19 Lockdown on the Primary Productivity of the North Indian Ocean

Frontiers in Marine Science, 2021
COrona VIrus Disease (COVID) 2019 pandemic forced most countries to go into complete lockdown and India went on complete lockdown from 24th March 2020 to 8th June 2020.
N. Sunanda, J. Kuttippurath, R. Peter, Kunal Chakraborty, A. Chakraborty   +4 more
doaj   +1 more source

Retrieval of Chlorophyll a from Sentinel-2 MSI Data for the European Union Water Framework Directive Reporting Purposes

Remote Sensing, 2018
The European Parliament and The Council of the European Union have established the Water Framework Directive (2000/60/EC) for all European Union member states to achieve, at least, “good” ecological status of all water bodies larger than 50 hectares in ...
Ave Ansper, K. Alikas
semanticscholar   +1 more source

Effect of Global Warming on Chlorophyll-a Concentration in the Indonesian Waters

Makara Journal of Science, 2016
Chlorophyll-a is a pigment that is contained in phytoplankton. Through the photosynthesis process, chlorophyll-a plays an important role in the global carbon cycle.
Martono Martono
doaj   +1 more source

Ensemble models with uncertainty analysis for multi-day ahead forecasting of chlorophyll a concentration in coastal waters

Engineering Applications of Computational Fluid Mechanics, 2018
In this study, ensemble models using the Bates–Granger approach and least square method are developed to combine forecasts of multi-wavelet artificial neural network (ANN) models.
S. Shamshirband, Ehsan Jafari Nodoushan, J. Adolf, Azizah Abdul Manaf, A. Mosavi, K. Chau   +5 more
semanticscholar   +1 more source