Journal of Aquatic Ecosystem Health
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Recovery in complex ecosystems
Journal of Aquatic Ecosystem Health - Tập 6 - Trang 181-187 - 1998
Current ecosystem theory has a deceptively simple representation of recovery. In actual practice,recovery is affected by the frequency and extent of disturbances and by the spatial heterogeneity of the ecological system. Environmental changes may pass through thresholds causing recovery to a different plant and animal community. The sheer complexity of the system combined with unanticipated synerg......
Integrating effects of contaminants across levels of biological organization: an overview
Journal of Aquatic Ecosystem Health - Tập 7 - Trang 113-116 - 2000
Effects of contaminants may occur at all levels oforganization, from molecular to ecosystem-levelresponses. While biochemical and physiologicalalterations in organisms may occur rapidly and areoften stressor-specific, the ecological relevance ofthese suborganismal indicators is uncertain.Alterations in populations and communities havegreater ecological relevance, but a firm mechanisticunderstandin......
Ethoxyresorufin O-deethylase (EROD) activity and fluctuating asymmetry (FA) in Zosterisessor ophiocephalus (Teleostei, Gobiidae) as indicators of environmental stress in the Venice lagoon
Journal of Aquatic Ecosystem Health - Tập 9 - Trang 239-247 - 2002
The impact of environmental stress on the grassgoby, Zosterisessor ophiocephalus, wasstudied at both biochemical and morphologicallevels, by comparing three sites in the Venicelagoon (the Northern, Central and Southernbasins) which differ in terms of the degree ofanthropogenic disturbance, in particular withregard to organic sediment contamination. At abiochemical level, the hepatic ethoxyresorufi......
Paleolimnology: an important tool for effective ecosystem management
Journal of Aquatic Ecosystem Health - - 1992
Four centuries of cumulative impacts on a Finnish river and its estuary: an ecosystem health-approach
Journal of Aquatic Ecosystem Health - - 1993
River bacteria time series analysis: a field and laboratory study which demonstrates aquatic ecosystem health
Journal of Aquatic Ecosystem Health - Tập 2 - Trang 251-259 - 1993
Time series analysis of heterotrophic baeterial viable counts on agar plates incubated at 20° and 4°C from weekly river water samples for 1 year has revealed a periodicity of 6 to 7 weeks in the total numbers. A cycle of increase and decrease in the counts which could not be attributed to season, river water temperature, pH, and flow rate has been observed in the heterotrophic bacteria which were ......
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