Influence of macrophyte abundance on population dynamics of slimy sculpin (cottus cognatus) and related food web structure in cold-water streams in western Wisconsin
Slimy sculpin (Coitus cognatus) are important inhabits of cold-water streams in southwestern Wisconsin. Unpublished data suggests that small-bodied sculpin are more abundant in stream riffles with high macrophyte cover than those where macrophytes are scarce. The objectives were to determine if the...
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ftunivwiscon:oai:minds.wisconsin.edu:1793/73365 2023-05-15T15:56:52+02:00 Influence of macrophyte abundance on population dynamics of slimy sculpin (cottus cognatus) and related food web structure in cold-water streams in western Wisconsin Merry, Jenna L. Strauss, Eric 2015-09-01T18:31:06Z application/pdf http://digital.library.wisc.edu/1793/73365 en_US eng http://digital.library.wisc.edu/1793/73365 Rivers--Wisconsin Food webs Sculpins Thesis 2015 ftunivwiscon 2022-04-14T05:58:25Z Slimy sculpin (Coitus cognatus) are important inhabits of cold-water streams in southwestern Wisconsin. Unpublished data suggests that small-bodied sculpin are more abundant in stream riffles with high macrophyte cover than those where macrophytes are scarce. The objectives were to determine if the presence of abundant macrophytes affects the density of different size classes of sculpin and those differences were driven by the influence of macrophyte presence oflocal food web structure. Basal carbon sources, macroinvertebrate prey, and slimy sculpin were sampled during the fall in the Coon Creek watershed of Wisconsin, and food webs were constructed using stable isotope analysis. Data were compared between sites with high and low macrophyte abundance. Periphyton biomass and the density and bioinass of common macroinvertebrate families were similar between areas of high and low macrophyte abundance. Slimy sculpin were not segregated by size between these site types, however the total density of slimy sculpin was significantly higher in areas with high macrophyte abundance. Macrophyte abundance influences sculpin distribution by providing refuge from predators and providing greater prey availability. The food webs at sites with abm1dant and scarce macrophyte cover were detritus based. In the fall, aquatic and terrestrial based detritus are important carbon sources in areas with high-macrophyte growth. Thesis Cottus cognatus Slimy sculpin University of Wisconsin: Digital Collections |
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Open Polar |
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University of Wisconsin: Digital Collections |
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ftunivwiscon |
language |
English |
topic |
Rivers--Wisconsin Food webs Sculpins |
spellingShingle |
Rivers--Wisconsin Food webs Sculpins Merry, Jenna L. Influence of macrophyte abundance on population dynamics of slimy sculpin (cottus cognatus) and related food web structure in cold-water streams in western Wisconsin |
topic_facet |
Rivers--Wisconsin Food webs Sculpins |
description |
Slimy sculpin (Coitus cognatus) are important inhabits of cold-water streams in southwestern Wisconsin. Unpublished data suggests that small-bodied sculpin are more abundant in stream riffles with high macrophyte cover than those where macrophytes are scarce. The objectives were to determine if the presence of abundant macrophytes affects the density of different size classes of sculpin and those differences were driven by the influence of macrophyte presence oflocal food web structure. Basal carbon sources, macroinvertebrate prey, and slimy sculpin were sampled during the fall in the Coon Creek watershed of Wisconsin, and food webs were constructed using stable isotope analysis. Data were compared between sites with high and low macrophyte abundance. Periphyton biomass and the density and bioinass of common macroinvertebrate families were similar between areas of high and low macrophyte abundance. Slimy sculpin were not segregated by size between these site types, however the total density of slimy sculpin was significantly higher in areas with high macrophyte abundance. Macrophyte abundance influences sculpin distribution by providing refuge from predators and providing greater prey availability. The food webs at sites with abm1dant and scarce macrophyte cover were detritus based. In the fall, aquatic and terrestrial based detritus are important carbon sources in areas with high-macrophyte growth. |
author2 |
Strauss, Eric |
format |
Thesis |
author |
Merry, Jenna L. |
author_facet |
Merry, Jenna L. |
author_sort |
Merry, Jenna L. |
title |
Influence of macrophyte abundance on population dynamics of slimy sculpin (cottus cognatus) and related food web structure in cold-water streams in western Wisconsin |
title_short |
Influence of macrophyte abundance on population dynamics of slimy sculpin (cottus cognatus) and related food web structure in cold-water streams in western Wisconsin |
title_full |
Influence of macrophyte abundance on population dynamics of slimy sculpin (cottus cognatus) and related food web structure in cold-water streams in western Wisconsin |
title_fullStr |
Influence of macrophyte abundance on population dynamics of slimy sculpin (cottus cognatus) and related food web structure in cold-water streams in western Wisconsin |
title_full_unstemmed |
Influence of macrophyte abundance on population dynamics of slimy sculpin (cottus cognatus) and related food web structure in cold-water streams in western Wisconsin |
title_sort |
influence of macrophyte abundance on population dynamics of slimy sculpin (cottus cognatus) and related food web structure in cold-water streams in western wisconsin |
publishDate |
2015 |
url |
http://digital.library.wisc.edu/1793/73365 |
genre |
Cottus cognatus Slimy sculpin |
genre_facet |
Cottus cognatus Slimy sculpin |
op_relation |
http://digital.library.wisc.edu/1793/73365 |
_version_ |
1766392505707790336 |