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Zooplankton metacommunity responses to environmental change in the sub-arctic

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dc.contributor.advisor Cottenie, Karl Winegardner, Amanda 2011-04-25T12:51:48Z 2011-04-25T12:51:48Z 2011-04 2011-03-31 2011-04-25
dc.description This thesis has already been submitted to Graduate Program Services in hard copy and approved, however I was advised that I could upload it for electronic distribution as well. en_US
dc.description.abstract Climate change can affect northern aquatic systems causing changes in the composition of resident species through either evolutionary or ecological processes. Rock pools near Churchill, Manitoba, Canada provide an ideal study system for studying the effect of environmental change in a metacommunity context, since salinity of the pools has increased significantly over the past quarter century, and dispersal between habitats is important in this landscape. I used a field experiment to study how zooplankton communities respond to increased salinity with two levels of dispersal limitation and three seasonal levels. I found that experimental zooplankton communities shifted from freshwater to more saline communities after a time lag of three weeks, and that highly connected pools became more similar to saline control communities faster than isolated pools. Moreover, freshwater communities manipulated later in the season changed faster to saline communities. This study highlights the metacommunity concept as a useful tool for studying environmental change. en_US
dc.language.iso en en_US
dc.subject Churchill en_US
dc.subject conductivity en_US
dc.subject dispersal en_US
dc.subject disturbance en_US
dc.subject metacommunity concept en_US
dc.title Zooplankton metacommunity responses to environmental change in the sub-arctic en_US
dc.type Thesis en_US Integrative Biology en_US Master of Science en_US Department of Integrative Biology en_US
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