Blazing and grazing: influences of fire and bison on tallgrass prairie stream water quality

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Show simple item record Larson, Danelle M. Grudzinski, Bartosz P. Dodds, Walter K. Daniels, Melinda D. Skibbe, Adam M. Joern, Anthony 2013-10-11T18:15:49Z 2013-10-11T18:15:49Z 2013-10-11
dc.description.abstract Fire and grazers (such as Bison bison) were historically among the most important agents for maintaining and managing tallgrass prairie, but we know little about their influences on water-quality dynamics in streams. We analyzed 2 y of data on total suspended solids (TSS), total N (TN), and total P (TP) (3 samples per week per stream during flow) in 3 prairie streams with fire and bison grazing treatments at Konza Prairie Biological Station, Kansas (USA), to assess whether fire and bison increase the concentrations of these water-quality variables. We quantified the spatial and temporal locations of bison (~0.21 animal units/ha) with Global Positioning System collars and documented bison trails, paw patches, wallows, and naturally exposed sediment patches within riparian buffers. Three weeks post-fire, TN and TP decreased (t-test, p<0.001), but TSS did not change. Bison spent <6% of their time within 10 m of the streams, increased the amount of exposed sediment in the riparian areas, and avoided wooded mainstem branches of stream (x² test, p<0.001). Temporal trends suggest that low discharge or increased bison density in the stream may increase TSS and TP during the summer months. Our results indicate a weak connection between TSS and nutrients with bison access to streams over our 2-y study and indicate that low TSS and nutrients characterize tallgrass prairie streams with fire and moderate bison densities relative to surrounding land uses. en_US
dc.language.iso en_US en_US
dc.relation.uri en_US
dc.rights © 2013 by The Society for Freshwater Science en_US
dc.subject Tallgrass prairie en_US
dc.subject Grasslands en_US
dc.subject Streams en_US
dc.subject Burning en_US
dc.subject Bison en_US
dc.subject Prescribed fire en_US
dc.subject Grazers en_US
dc.title Blazing and grazing: influences of fire and bison on tallgrass prairie stream water quality en_US
dc.type Article (publisher version) en_US 2013 en_US
dc.citation.doi doi:10.1899/12-118.1 en_US
dc.citation.epage 791 en_US
dc.citation.issue 3 en_US
dc.citation.jtitle Freshwater Science en_US
dc.citation.spage 779 en_US
dc.citation.volume 32 en_US
dc.contributor.authoreid wkdodds en_US
dc.contributor.authoreid mddaniel en_US
dc.contributor.authoreid askibbe en_US
dc.contributor.authoreid ajoern en_US

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