The widespread use of systemic neonicotinoid insecticides in agriculture results first in contamination of the soil of the treated crops, and secondly in the transfer of residues to the aquatic environment. The high toxicity of these insecticides to aquatic insects and other arthropods has been recognized, but there is little awareness of the impacts these chemicals have on aquatic environments...

Ecosystem functioning is one of the most striking topics in ecological research. All human beings depend on the functioning of ecosystems and the services provided by ecosystems [1]. Ecosystem services provide food from e.g. agriculture and fish as well as clean water and air. Thus, the functioning of ecosystems is a crucial topic of experimental studies in ecology. The first known ecological e...

H. T. Odum’s influential Limnology and Oceanography 1956 publication compared gross primary production (GPP) and ecosystem respiration (ER) among aquatic ecosystems. Few syntheses of aquatic ecosystem metabolism have been completed since. We used Odum’s conceptual framework to compare GPP and ER from open-water diel oxygen curves in lakes, wetlands, estuaries, and streams (n 5 350). We also doc...

The recent work is dedicated to the study of behaviour of exergy and structural exergy in physical models of aquatic ecosystems—mesocosms and microcosms and in Lake Baikal. The results of field experiments with mesocosms on Lake Baikal, containing natural plankton assemblage, and laboratory experiments with microcosms containing Daphnia magna and Chlorella vulgaris demonstrated decrease of the ...

1Laboratory of Aquatic Ecosystem Conservation, Graduate School of Fisheries Sciences, Hokkaido University, Kita 9 Nishi 9, Kita-ku, Sapporo 060-0809, Japan 2Laboratory of Molecular and Cellular Interactions, Graduate School of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo 060-0810, Japan 3Laboratory of Aquatic Ecosystem Conservation, Field Science Center for Northern Biosphere...

Using the field sampling data obtained in November 2012, the aquatic ecosystem health of river network in Hangzhou Bay New District in Ningbo was assessed with Plankton Index of Biology Integrity (P-IBI). In these samples, 125 species of phytoplankton and 19 species of zooplankton were identified and the dominant phytoplankton species of each sampling sites were almost pollution indicator speci...

With the Water Framework Directive (WFD), the European Union has established a legal framework for the protection of all aquatic ecological systems including groundwater. In this paper the economic impacts of the WFD for irrigated agriculture with regard to the reduction of water withdrawal permits and various scenarios are analyzed. The results show that decreasing water permits cause decreasi...