نتایج جستجو برای: bioassessment
تعداد نتایج: 217 فیلتر نتایج به سال:
Adequate environmental management in tropical aquatic ecosystems is imperative. Given the lack of knowledge about functional diversity and bioassessment programs, missing needed evidence on pollution its effect biodiversity ecology. Therefore, we investigated composition distribution macroinvertebrate community along two rivers. Specifically, 15 locations were sampled Coca Aguarico Rivers (Ecua...
The ecological quality of freshwater ecosystems is endangered by various micropollutants released into the environment human activities. cumulative effects these can affect fitness organisms and populations functional diversity stream ecosystems. In this study, we investigated relationships between joint toxicity trait syndromes. A syndrome corresponds to a combination traits that could occur t...
Aquatic biofilms are heterogeneous assemblages of microorganisms surrounded by a matrix extracellular polymeric substances (EPS). Recent studies suggest that aquatic can physically act as sorptive sponges DNA. We took the opportunity from already available samples stone and macroinvertebrates specimens collected in parallel at same sites to test capacity DNA samplers macroinvertebrate communiti...
Flow regimes profoundly influence river organisms and ecosystem functions, but regulatory approaches often lack the scientific basis to support sustainable water allocation. In part, this reflects challenge of understanding ecological effects flow variability over different temporal spatial domains. Here, we use a process-based distributed hydrological model simulate 23 years natural regime in ...
Inland aquatic ecosystems, such as streams, rivers, ponds and lakes, play an important role in maintaining global biodiversity ecosystem services. They have been increasingly influenced by environmental change warming, dam construction, habitat fragmentation, eutrophication urbanization. However, our understanding of the impact on functions remains elusive. The aim this special issue is to high...
According to the Water Framework Directive (WFD), biological quality elements constitute basis for assessing ecological status of surface waters. Biological communities are good indicators water because they reflect environmental conditions over time and do not require frequent sampling. The main aims were assess trophic Lake Visovac (Krka River hydrosystem, South Croatia) using phytoplankton t...
Land use in the Acid Sulphate (AS) soils induces metal and acidity pollution of aquatic ecosystems coastal areas worldwide. Increasing utilization AS poses increasing risks for deterioration water bodies. We studied effects coverage soils, together with other catchment land cover attributes, on assemblages fish, diatoms benthic invertebrates 42 sites along 15 lowland rivers Finland during three...
The decomposition of organic matter is a fundamental ecosystem-level process that governs nutrient cycling, fuels ecosystems, and impacts our global climate. Despite the central importance this for ecosystems across planet, little known about how capacity to decompose matter—that is, their potential—varies time space. Closing gap needed provide baseline information on dynamics tracking anthropo...
Abstract Background Disentangling the relative roles of environmental filtering and spatial processes in structuring ecological communities is a central topic metacommunity ecology. Metacommunity ecology temperate river ecosystems has been well developed, while less attention paid to subtropical urban networks. Here, we examined factors seasonal difference macroinvertebrates assembly networks S...
The diatom motility trait is widely used in bioassessment studies, however, there no strong consensus as to what environmental conditions reflects. We random forest models explore the behavior of several diatom-based indices and examined whether stronger motility-environmental relationships could be developed by controlling for factors that influence natural sediment loads co-occur with anthrop...
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