Long-Term and Short-Term Arsenate Toxicity to Freshwater Phytoplankton and Periphyton in Limnocorrals

Autor:	Ulf Heyman, Hans Blanck, Sten-Åke Wängberg
Rok vydání:	1991
Předmět:	Ecology Phosphorus fungi Arsenate chemistry.chemical_element Aquatic Science Photosynthesis Pollution-induced community tolerance chemistry.chemical_compound chemistry Phytoplankton Toxicity Environmental science Periphyton Ecology Evolution Behavior and Systematics Arsenic
Zdroj:	Canadian Journal of Fisheries and Aquatic Sciences. 48:173-182
ISSN:	1205-7533 0706-652X
DOI:	10.1139/f91-024
Popis:	A short-term photosynthesis test employing phytoplankton or periphyton communities was a good predictor of the concentration of arsenate that affected these microalgal communities under long-term arsenate exposure in limnocorrals. Arsenate stress changed the structure of the communities to a more tolerant species composition which was consistent with the concept of pollution-induced community tolerance (PICT). The results involving phytoplankton and periphyton in a phosphorus-limited forest lake corroborated earlier findings from the marine environment. Microalgae from the lake were, however, about one order of magnitude more sensitive than the marine communities, probably because these algal communities primarily were limited by phosphorus instead of nitrogen. The observed arsenate toxicity indicated that the natural background of arsenic may already be a structuring factor for the microalgal communities in several freshwater environments.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2ca2bc5db1432fa5db43579e3fce383e https://doi.org/10.1139/f91-024 Zobrazit plný text záznamu