Results 11 to 20 of about 70 (60)
Brazilian Journal of Biology, 2019 The objective of this study was to characterize the limnological, microystin and phytoplankton community of five tropical eutrophic reservoirs located in the Brazilian northeastern semi-arid region, used for domestic use at the time of extreme drought ...
A. H. G. Rego +2 more
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Revista Brasileira de Engenharia Agrícola e Ambiental, 2007 Devido aos grandes problemas de eutrofização de lagos e reservatórios, a identificação de áreas fornecedoras de fósforo possui grande importância no planejamento de medidas de controle da poluição hídrica por atividades agrícolas. Neste trabalho, aplicou-
Fabíola Lopes +5 more
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Revista Brasileira de Engenharia Agrícola e Ambiental, 2010 O fósforo (P) é considerado o elemento limitante da eutrofização, cuja perda, via escoamento superficial, pode comprometer a qualidade da água. O objetivo deste trabalho foi estimar o potencial de perda de P do solo para a água, por meio da metodologia ...
Mariana F. M. de Oliveira +3 more
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Features of reservoirs eutrofication by elements of agrochemical fertilizers
Environmental safety and natural resources, 2018 Фосфор, як і азот та калій, необхідний для нормального розвитку рослин. Джерелом фосфору для рослин є фосфати ґрунту, головним чином фосфат кальцію Са3(РО4)2. Але для більшості ґрунтів фосфату кальцію недостатньо. Крім того, через його нерозчинність у воді він практично недоступний для рослин.
Greben, О.S., Trofymchuk, O.М.
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Rekayasa, 2008 This research was done on April 2007 until ]uni 2007, with study area at 8 kecamatan in Kabupaten Sidoarjo, for the purpose of analysing water quality condition supporting tambak activities and to clasify tambak, river and beach water based onparameter ...
Akhmad Farid
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Ilmu Kelautan, 2015 Arus pasang surut di muara sungai dapat mempengaruhi penyebaran material organik dan zat hara. Keberadaan material organik dan zat hara di perairan dapat menentukan kualitas suatu perairan.
Lilik Maslukah +2 more
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Acta Limnologica Brasiliensia, 2011 AIM: In this investigation we carried out an experiment to assess whether the growth of Egeria najas and E. densa (two rooted submersed Hydrocharitacea, native to South America) are limited by inorganic carbon or not; METHODS: We measured the early plant
Aline de Freitas, Sidinei Magela Thomaz
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Cyanotoxins in Serbia and water treatment procedures for their elimination [PDF]
Geographica Pannonica, 2012 Cyanotoxins are secondary metabolites produced by cyanobacteria, mainly as a result of eutrofication and water quality deterioration. The most common cyanotoxins are cyclic peptide hepatotoxins called microcystins.
Tokodi Nada +3 more
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Long-Term Changes of Aquatic Communities in the Kharbeyskie Lakes [PDF]
Журнал Сибирского федерального университета: Серия Биология, 2014 Kharbeyskie Lakes situated on the North-East of the European Russia were sampled. The aim of the present work was to evaluate the changes in the lakes ecosystems which took place during more than 40 years since the first sampling in 1960’s.
Elena B. Fefilova +5 more
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Gayana, 2001 En un sistema léntico los cambios en los niveles de trofía normalmente están acompañados de cambios estructurales en la biota. Una de las formas de establecer estos cambios estructurales en forma simple es a través de una evaluación rápida de la ...
Elsa Muñoz +2 more
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