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Kevin J. Collier

Researcher at University of Waikato

Publications -  139
Citations -  4378

Kevin J. Collier is an academic researcher from University of Waikato. The author has contributed to research in topics: Riparian zone & Macrophyte. The author has an hindex of 36, co-authored 137 publications receiving 4079 citations. Previous affiliations of Kevin J. Collier include National Institute of Water and Atmospheric Research & University of Canterbury.

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New Zealand stream crayfish: functional omnivores but trophic predators?

TL;DR: Stable isotope analyses revealed that crayfish from both native forest and pasture streams incorporated energy from aquatic invertebrates into their body tissue but did not appear to utilize detritus for growth, suggesting that change in local habitat and food resources, as a result of land use change, affect cray fish food choice more than factors related solely to age or size.
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A stable isotope study of linkages between stream and terrestrial food webs through spider predation

TL;DR: It is suggested that consumption of prey derived from aquatic sources can provide significant nutrition for spiders living along some stream channels and may represent an important feedback mechanism contributing to the energetics of riparian communities at sites where aquatic insect production is high.
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Quantifying relationships between land-use gradients and structural and functional indicators of stream ecological integrity

TL;DR: In this paper, the relationship between three land uses (indigenous vegetation, urbanisation, and agriculture) and indicators of stream ecological integrity was investigated using Boosted Regression Tree Modeling (BRT).
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Contrasting responses to catchment modification among a range of functional and structural indicators of river ecosystem health

TL;DR: The authors measured the response of ecosystem metabolism, organic matter decomposition and strength loss, and invertebrate community composition across a gradient of catchment impairment defined by upstream landuse stress in two New Zealand streams.
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Dispersal of adult caddisflies (Trichoptera) into forests alongside three New Zealand streams

TL;DR: Results indicate that the main area of activity for adult Trichoptera in forested riparian zones was within 30 m of the stream edge at these sites, and a faster rate of decline for abundance than richness with distance away from the stream reflected the relatively large distances travelled by representatives of many species.