In order to understand biotic patterns and their changes in nature there is an obvious need for high-quality seamless measurements of such patterns. If remote sensing methods have been applied with reasonable success in terrestrial environment, their use in aquatic ecosystems still remained challenging. In the present study we combined hyperspectral remote sensing and boosted regression tree mo...

1. We investigated the effect of moderate eutrophication on leaf litter decomposition and associated invertebrates in five reference and five eutrophied streams in central Portugal. Fungal parameters and litter N and P dynamics were followed in one pair of streams. Benthic invertebrate parameters that are considered useful in bioassessment were estimated in all streams. Finally, we evaluated th...

benthic organisms have been studied in past to assess the health of an aquatic ecosystem. moreover, being sedentary forms they have been used as indicator organisms. in the present study, an attempt has been made to study the distribution and assemblage of major macrobenthic forms occurring in ponnani estuary. a total of 23 genera of benthic invertebrate fauna belonging to 6 groups viz., polych...

previous studies showed that the level of total mercury (thg) in sanandaj gheshlagh reservoir (sgr) water is higher than those limits established by who (i.e., 1 µg/l). therefore a research project to evaluate the level of total mercury in sgr sediments and benthos masses during july to december 2009 from three different sites with different depths (2 to 30 meters) was carried out. samples were...

We examined the flow of mercury (Hg) from benthic invertebrates to fishes in lakes with contrasting fish community structure. The study was carried out in two whole lakes in southcentral Ontario in 1992. Both were remote from direct sources of contamination and were chosen because of their physical and chemical similarities. Although the fish communities in the two lakes were qualitatively simi...

River restoration is a multi-billion-dollar business, yet it unclear whether benthic community health, which routinely monitored, can be used as proxy for the health of hyporheos. Applying Before-After-Control-Impact approach to UK case study, we compared effects removing an impoundment on hyporheos with benthos. We invertebrate biological traits that expected respond restoration. constructed s...

What Scientists Did Nearshore fishes around haulouts are potential prey for Steller sea lions, especially pups, as they learn to forage and supplement their milk diets during weaning. Scientists conducted spring, summer, and winter scientific diving surveys around two Steller sea lion haulouts and two control sites on Kodiak Island to determine the abundance and composition of forage fishes. Co...

1. Ecological stoichiometry deals with the mass balance of multiple key elements [e.g. carbon (C), nitrogen (N), phosphorus (P)] in ecological systems. This conceptual framework, largely developed in the pelagic zone of lakes, has been successfully applied to topics ranging from population dynamics to biogeochemical cycling. More recently, an explicit stoichiometric approach has also been used ...