Search Results - "Townsend, Colin R."

Reconceptualizing synergism and antagonism among multiple stressors by Piggott, Jeremy J., Townsend, Colin R., Matthaei, Christoph D.

“…The potential for complex synergistic or antagonistic interactions between multiple stressors presents one of the largest uncertainties when predicting…”
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Climate warming and agricultural stressors interact to determine stream macroinvertebrate community dynamics by Piggott, Jeremy J, Townsend, Colin R, Matthaei, Christoph D

“…Global climate change is likely to modify the ecological consequences of currently acting stressors, but potentially important interactions between climate…”
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Multiple stressors in agricultural streams: a mesocosm study of interactions among raised water temperature, sediment addition and nutrient enrichment by Piggott, Jeremy J, Lange, Katharina, Townsend, Colin R, Matthaei, Christoph D

“…Changes to land use affect streams through nutrient enrichment, increased inputs of sediment and, where riparian vegetation has been removed, raised water…”
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Light, nutrients and grazing interact to determine stream diatom community composition and functional group structure by LANGE, KATHARINA, LIESS, ANTONIA, PIGGOTT, JEREMY J, TOWNSEND, COLIN R, MATTHAEI, CHRISTOPH D

“…1. Benthic algal communities are shaped by the availability of nutrients and light and by herbivore consumption. Many studies have examined how one of these…”
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Individual and combined responses of stream ecosystems to multiple stressors by Townsend, Colin R., Uhlmann, S. Sebastian, Matthaei, Christoph D.

“…1. Managers must understand the effects of stressors on ecosystems in order to identify thresholds of harm but, to be meaningful, thresholds will usually need…”
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Patterns of benthic algae and cyanobacteria along twin-stressor gradients of nutrients and fine sediment: a stream mesocosm experiment by Wagenhoff, Annika, Lange, Katharina, Townsend, Colin R., Matthaei, Christoph D.

“…Summary The factors underlying population and community dynamics are almost invariably multivariate, and ecosystems worldwide are affected by many…”
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Stepping in Elton's footprints: a general scaling model for body masses and trophic levels across ecosystems by Riede, Jens O, Brose, Ulrich, Ebenman, Bo, Jacob, Ute, Thompson, Ross, Townsend, Colin R, Jonsson, Tomas

“…Ecology Letters (2011) 14: 169-178 ABSTRACT: Despite growing awareness of the significance of body-size and predator-prey body-mass ratios for the stability of…”
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Responses of stream fish populations to farming intensity and water abstraction in an agricultural catchment by Lange, Katharina, Townsend, Colin R, Gabrielsson, Rasmus, Chanut, Pierre C. M, Matthaei, Christoph D

“…Agriculture affects streams worldwide, and multiple stressors are usually at work. The effects of farming intensification in the catchment are likely to…”
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Stream Communities Along a Catchment Land-Use Gradient: Subsidy-Stress Responses to Pastoral Development by Niyogi, Dev K, Koren, Mark, Arbuckle, Chris J, Townsend, Colin R

“…When native grassland catchments are converted to pasture, the main effects on stream physicochemistry are usually related to increased nutrient concentrations…”
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Inconsistent Relationships of Primary Consumer N Stable Isotope Values to Gradients of Sheep/Beef Farming Intensity and Flow Reduction in Streams by Lange, Katharina, Townsend, Colin R., Matthaei, Christoph D.

“…Stable isotope values of primary consumers have been proposed as indicators of human impacts on nitrogen dynamics. Until now, these values have been related…”
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Impacts of fine sediment addition to tussock, pasture, dairy and deer farming streams in New Zealand by MATTHAEI, CHRISTOPH D., WELLER, FLORIAN, KELLY, DAVID W., TOWNSEND, COLIN R.

“…Summary 1. Increased fine sediment input caused by agricultural development is expected to act as a stressor for stream ecosystems. In a large‐scale field…”
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The influence of scale and geography on relationships between stream community composition and landscape variables: description and prediction by Townsend, Colin R., Dolédec, Sylvain, Norris, Richard, Peacock, Kathi, Arbuckle, Chris

“…SUMMARY 1. We analysed an existing database of macroinvertebrates and fish in the context of a newly established geographical information system (GIS) of…”
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Molecular Characterization of Giardia Isolates from Calves and Humans in a Region in Which Dairy Farming Has Recently Intensified by Winkworth, Cynthia L, Learmonth, James J, Matthaei, Christoph D, Townsend, Colin R

“…Giardiasis is a notifiable disease of high prevalence in New Zealand, but there is limited knowledge about the sources of Giardia duodenalis genotypes that can…”
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Macroinvertebrate responses along broad stressor gradients of deposited fine sediment and dissolved nutrients: a stream mesocosm experiment by Wagenhoff, Annika, Townsend, Colin R., Matthaei, Christoph D.

“…1. Degradation of freshwater ecosystems is a major concern worldwide. Agriculture introduces multiple stressors to streams, presenting a challenge for…”
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Subsidy-stress and multiple-stressor effects along gradients of deposited fine sediment and dissolved nutrients in a regional set of streams and rivers by WAGENHOFF, ANNIKA, TOWNSEND, COLIN R, PHILLIPS, NGAIRE, MATTHAEI, CHRISTOPH D

“…1. Stream managers need to understand relationships between multiple stressors and ecological responses. We examined responses of benthic invertebrates and…”
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Can biological traits of stream invertebrates help disentangle the effects of multiple stressors in an agricultural catchment? by Lange, Katharina, Townsend, Colin R, Matthaei, Christoph D

“…Biological traits, which may give insights into the mechanisms driving the distribution of organisms along gradients of stressor intensities, have been…”
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Multiple stressors in agricultural streams: interactions among sediment addition, nutrient enrichment and water abstraction by Matthaei, Christoph D., Piggott, Jeremy J., Townsend, Colin R.

“…1. Many ecosystems are influenced simultaneously by multiple stressors, and the consequences of stressors are often unpredictable on the basis of knowledge of…”
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Flood effects on invertebrates, sediments and particulate organic matter in the hyporheic zone of a gravel-bed stream by OLSEN, DEAN A., TOWNSEND, COLIN R.

“…Summary 1. We investigated the effects of a flood on the fauna and physical habitat of the hyporheic zone of the Kye Burn, a fourth order gravel‐bed stream in…”
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Climate warming and agricultural stressors interact to determine stream periphyton community composition by Piggott, Jeremy J, Salis, Romana K, Lear, Gavin, Townsend, Colin R, Matthaei, Christoph D

“…Lack of knowledge about how the various drivers of global climate change will interact with multiple stressors already affecting ecosystems is the basis for…”
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Invasion biology and ecological impacts of brown trout Salmo trutta in New Zealand by Townsend, Colin R.

“…Brown trout Salmo trutta were introduced to New Zealand in 1867. Successful establishment was broadly predictable in terms both of the characteristics of brown…”
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