Sewage released from lakeside development can reshape ecological communities. Nearshore periphyton rapidly assimilate sewage-associated nutrients, leading to increases of filamentous algal abundance, thus altering both food abundance and quality for grazers. In Lake Baikal, a large, ultra-oligotrophic, remote lake in Siberia, has increased near developments, localized sewage input is the suspec...

This 25-y study monitored aquatic and terrestrial gamma-ray-emitting radionuclide levels near a nuclear power plant. It is the only known, long-term environmental survey of its kind. It was conducted neither by a utility owner, nor by a government agency, but rather by a private, environmental research institution. Compared to dozens of other flora and fauna, periphyton was found to be the best...

The effects of nonylphenol (NP) on phytoplankton and periphyton were studied in 230 L outdoor microcosms. Phytoplankton cell density and biomass, phytoplankton and periphyton diversity, and assemblage composition were analyzed during a four-week preapplication period, followed by six weeks of NP treatment via controlled release and a six weeks postapplication period. Changes in species richness...

We performed two experiments to examine how temperature and nutrients interact to control dinitrogen (N2) fixation, chlorophyll a (Chl a) biomass, and community composition of periphyton in subalpine oligotrophic streams in the Sawtooth Mountains of Idaho. We grew periphyton on nutrient-diffusing substrata (NDS) in a cold lake inlet (7uC) and a warm lake outlet (18uC). We then switched substrat...

Warming and higher nitrogen loading induced by increasing precipitation are expected scenarios in north temperate regions as consequence of global climate change, with potential effects on the functional traits submerged macrophytes periphyton. Using an experimental heating facility we investigated responses three-week growth two (Potamogeton crispus Linn. Elodea canadensis Michx.), periphyton ...

Periphyton is an ecological essential in freshwater lakes and rivers. Its abundance biomass are very dynamic various habitats subject to factors, for example, nutrient light. Following flooding events, the transitional area adjacent a river inlet shallow lake generates diverse periphyton with gradients current velocity, suspended matters, nutrients, light, which would strongly shape growth comm...

Abstract Many activities are carried out around the Laut Tawar lake, one of which is cultivation floating net cages that can contribute nutrients to waters. One organisms take advantage abundance in waters periphyton. This study aims examine community structure periphyton as natural food Lake. research was conducted January-April 2022. The results showed there 9 classes at KJA station, namely B...

This study analyzes psbA gene sequences, predicted D1 protein sequences, species relative abundance, and pollution-induced community tolerance in marine periphyton communities exposed to the antifouling compound Irgarol 1051. The mechanism of action of Irgarol is the inhibition of photosynthetic electron transport at photosystem II by binding to the D1 protein. The metagenome of the communities...

1. Our goal was to quantify short-term phosphorus (P) partitioning and identify the ecosystem components important to P cycling in wetland ecosystems. To do this, we added P radiotracer to oligotrophic, P-limited Everglades marshes. PO4 was added to the water column in six 1-m enclosed mesocosms located in long-hydroperiod marshes of Shark River Slough, Everglades National Park. Ecosystem compo...

During the past 30 y, periphyton has been recognized as a key component in the benthos of lake littoral zones. However, the role of meiofauna-sized organisms living in the periphyton and mechanisms regulating and influencing those communities largely have been neglected, and the process of community development and colonization pathways of periphytic meiofauna are unknown in lakes. We studied t...