Buscar
Mostrando ítems 41-50 de 863
A biological and nitrate isotopic assessment framework to understand eutrophication in aquatic ecosystems
(Elsevier, 2020-05)
Eutrophication is a globally significant challenge facing aquatic ecosystems, mostly associated with human induced enrichment of these ecosystems with nitrogen and phosphorus. Given the complexity of assigning eutrophication ...
Space-time monitoring of water quality in an eutrophic reservoir using SENTINEL-2 data - a case study of San Roque, Argentina
(Elsevier Science, 2021-11)
Eutrophic reservoirs are characterized by excessive presence of plant and algal growth due to favourable environmental conditions, temperature, light and nutrients. Human activities accelerate this phenomenon and provoke ...
Nutrient enrichment is related to two facets of beta diversity for stream invertebrates across the United States
(2014-01-01)
Beta diversity, the spatial or temporal variability of species composition, is a key concept in community ecology. However, our ability to predict the relative importance of the main drivers of beta diversity (e.g., ...
Frações de fósforo do sedimento límnico e sua mobilidade em reservatório da região semiárida tropical
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia AmbientalEngenharia Civil, 2022-07-14)
Phosphorus is a crucial nutrient for the aquatic environment, however its excess has brought
imbalance to the lake ecosystem. The mobile forms of phosphorus in the sediment are the
available fractions that will be ...
Estudo limnológico dos reservatórios Jaguari e Jacareí com ênfase na comunidade zooplanctônica
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Ecologia e Recursos Naturais - PPGERN, 2013-08-30)
The zooplankton community plays an important role in the dynamics of aquatic ecosystems, especially in the energy flow and nutrient cycling. The density, the biomass, the taxonomic composition and the body size of these ...
Fracionamento químico do fósforo no sedimento dos reservatórios de gargalheiras e carnaúba, localizados na Região Tropical Semiárida
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia Ambiental, 2021-04-28)
Knowing the chemical composition of the sediment in order to determine the mobile fractions of phosphorus (P) is an essential measure in the recovery of eutrophic lakes. The P accumulated in the sediment can be released ...
Monitoring of aquaculture in continental reservoirs using the trophic status index
(Univ Federal Mato Grosso, 2019-05-01)
Aquaculture is the fastest growing activity among food production sectors, however, its practice can cause environmental impacts, in case if a monitoring plan is not applied. The objective of the present study was to ...
Estudo dos índices de estado trófico em reservatórios do semiárido
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia AmbientalEngenharia Civil e Ambiental, 2022-07-13)
Eutrophication has become a global problem that can increase water quality, due to the excess of nutrients, mainly phosphorus, stimulating the increase in primary productivity. One way of classifying and presenting the ...