caa a22 4500 469106360 CHVBK 20180323133057.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF00044168 doi (NATIONALLICENCE)springer-10.1007/BF00044168 A brief review of approaches using ciliated protists to assess aquatic ecosystem health [Elektronische Daten] [Denis Lynn, Guy Gilron] Ciliated protists are important components of marine and freshwater ecosystems. As such, their usefulness as indicators of aquatic ecosystem health has been recognized. Two major technical approaches have been employed: (1) community assessment, and (2) toxicological tests. Community assessment of an aquatic ecosystem must at least include comparisons to either baseline data on the ecosystem under study or to ‘pristine' ecosystems, since abundance, diversity, and biomass of ciliates are correlated with ecosystem trophic status. Common sampling approaches include sampling of populations and colonization rate determination. The first method may involve nets, bottles, pumps, or integrating samplers. Samples are either counted live or fixed. The choice of fixative may influence estimates of abundance, diversity, and biomass. Colonization rates are determined using polyurethane foam units (PFU's), microscope slides, coverslips, plastic films or petri plates. Live counts are routine with this approach, but undoubtedly give less precise estimates of diversity. Toxicological tests have been devised using a number of indicators of ecosystem health, including respiration rates, growth rates, and chemotactic responses. Kluwer Academic Publishers, 1992 ciliates nationallicence water quality nationallicence techniques nationallicence community structure nationallicence bioassays nationallicence Lynn Denis Department of Zoology, University of Guelph, N1G 2W1, Guelph, Ontario, Canada aut Gilron Guy Borealis Environmental Consulting Inc., 1728 156A Street, V4A 4W1, B. C., Canada aut Journal of Aquatic Ecosystem Health Kluwer Academic Publishers 1/4(1992-12-01), 263-270 0925-1014 1:4<263 1992 1 10813 https://doi.org/10.1007/BF00044168 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00044168 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lynn Denis Department of Zoology, University of Guelph, N1G 2W1, Guelph, Ontario, Canada aut NATIONALLICENCE 700 1- Gilron Guy Borealis Environmental Consulting Inc., 1728 156A Street, V4A 4W1, B. C., Canada aut NATIONALLICENCE 773 0- Journal of Aquatic Ecosystem Health Kluwer Academic Publishers 1/4(1992-12-01), 263-270 0925-1014 1:4<263 1992 1 10813 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer