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The objective of this study was to estimate Argia vivida (Odonata: Coenagrionidae) populations, identify breeding habitat, and investigate movement of adults within Banff National Park, Alberta, Canada, during the summer of 2003. Mark-recapture techniques and standardized dip-net surveys were...
The vertical positioning of benthic invertebrates should be a trade-off between the risky, but productive, sediment surface and the safer, but physiologically harsher, conditions deeper down in the sediment. This is because the foraging efficiency of benthic fish decreases with sediment depth,...
We investigated spatial distribution of fishes and decapods in eelgrass (Zostera marina L.) and non-vegetated sandy habitats in Kouchibouguac Estuary, New Brunswick, Canada. During the ice-free season in 1999 and 2000, mobile fauna were sampled using fyke nets, minnow traps and an epibenthic...
Intraguild predation (IGP) and cannibalism among co-occurring lotic odonate species was studied in Central Finland. A laboratory experiment was performed to assess the microhabitat use and cannibalism between intermediate and late instars of Calopteryx virgo larvae and predation by larger...
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