Results 21 to 30 of about 203,020 (279)
Limnological Review, 2017 Intensive and expansive human activity greatly accelerates the natural process of lake evolution. It is assumed that an increase in the rate of lake fertilization (often termed “eutrophication”) is the most common and most serious anthropogenic ...
Markowski Maciej
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Rotifer trophic state indices as ecosystem indicators in brackish coastal waters
Oceanologia, 2013 Thanks to their short life cycles, rotifers react rapidly to changes in environmental conditions and so may be useful for biological monitoring. The objective of this paper was to investigate the applicability of rotifer trophic state indices as ...
Agnieszka Gutkowska +2 more
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Catastrophic regime shifts in model ecological communities are true phase transitions [PDF]
, 2010 Ecosystems often undergo abrupt regime shifts in response to gradual external changes. These shifts are theoretically understood as a regime switch between alternative stable states of the ecosystem dynamical response to smooth changes in external ...
Capitán J A Cuesta J A +10 more
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Trophic state assessment using hybrid classification tree-artificial neural network
IJAIN (International Journal of Advances in Intelligent Informatics), 2020 The trophic state is one of the significant environmental impacts that must be monitored and controlled in any aquatic environment. This phenomenon due to nutrient imbalance in water strengthened with global warming, inhibits the natural system to ...
Ronnie Sabino Concepcion II +5 more
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Nitrogen and phosphorus limitation of phytoplankton growth in New Zealand lakes: Implications for eutrophication control [PDF]
, 2010 We examine macronutrient limitation in New Zealand (NZ) lakes where, contrary to the phosphorus (P) only control paradigm, nitrogen (N) control is widely adopted to alleviate eutrophication.
Abell, Jonathan Michael +2 more
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Trophic diversity of Poznań Lakeland lakes
Limnological Review, 2015 The main goal of the presented work is to determine the current trophic state of 31 lakes located in Poznań Lakeland. These lakes are included in the lake monitoring programme executed by the Voivodship Environmental Protection Inspectorate in Poznań ...
Dzieszko Piotr, Zwoliński Zbigniew
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Journal of Freshwater Ecology, 2017 Evaluations of the composition and biomass of photoautotrophic periphyton, nutrient concentrations of water, and concentrations of total phosphorous of benthic organic matter at eight stream sites in Middle Tennessee were used to: (1) document the ...
Molly R. Grimmett +1 more
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Acta Scientiarum: Biological Sciences, 2013 This study evaluated the trophic conditions of the reservoir located in the urban perimeter of the town General Sampaio, semiarid region of the Ceará State, Brazil and its relationship with seasonal variation in rainfall between 2010 and 2011.
Francisco Ítalo Barbosa Chaves +4 more
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WHO NEEDS TROPHIC STATE INDICES? [PDF]
Lake and Reservoir Management, 1984 ABSTRACT The degree of nutrient enrichment has classically indicated trophic state. Nutrients alone, however, inadequately describe a lake's trophic-dynamic structure. Therefore, trophic state indices are simplifications of a more dynamic process. The specific utility of trophic state indices for their intended uses (classification and ranking by ...
openaire +1 more source
Water pollution index of high Andean micro-basin of the Chumbao River, Andahuaylas, Peru
Revista Facultad de Ingeniería Universidad de Antioquia, 2021 During its journey, the river water suffers natural or anthropic contamination, deteriorating its quality. This impact can be qualified by determining the pollution Indexes (IPO).
David Choque-Quispe +6 more
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