University of Notre Dame Environmental Research Center (UNDERC)
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- Author(s):
- Francl, K. E.
- Abstract:
Despite the acknowledgement of water shrews (Sorex palustris) as a patchilydistributed, rare species throughout much of their southern range and a species of concern in Michigan and Wisconsin, specific habitat requirements of these wetlandobligate insectivores are poorly understood. My study determined the presence of water shrews at 51 lacustrine, riverine, and palustrine areas at UNDERC (Vilas Co., Wisconsin and Gogebic Co, Michigan) and the Ottawa National Forest (Gogebic Co., Michigan)….
- Date Published:
- 2005
- Record Visibility:
- Public
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- Author(s):
- Bade, D. L.
- Date Published:
- 2004
- Record Visibility:
- Public
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- Author(s):
- Francl, K. E.
- Abstract:
This project sought to provide valuable data for the Michigan Herp Atlas by conducting wide and intensive surveys of 140 sites in Gogebic County. Surveys with pitfalls and drift fences, visual searches of 25 m x 25 m plots, incidental captures, and visual open water surveys for turtles were implemented to maximize species observation. Nineteen species of herpetofauna were captured, totaling 3048 adults, tadpoles, and larvae. Uncommon captures included a state species of concern, the wood turt…
- Date Published:
- 2005
- Record Visibility:
- Public
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- Author(s):
- Zicker, E. L.
- Date Published:
- 1955
- Record Visibility:
- Public
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- Author(s):
- Houser, J. N.
- Abstract:
Watershed characteristics determine the inputs of dissolved organic carbon (D O C) and nutrients into lakes. In-lake processes modify these inputs to determine lake characteristics. I examined the role of allochthonous DOC as a m aster variable that affects the thermal structure of lakes during summer stratification, primary production, ecosystem respiration, and dynam ics of the biota. I combined comparative studies, theoretical modeling, and ecosystem experiments to address the following qu…
- Date Published:
- 2001
- Record Visibility:
- Public
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- Author(s):
- Cottingham, K.L.
- Abstract:
Anthropogenic alterations of nutrient inputs and food-web structure are two of the primary stressors affecting lake phytoplankton. This paper explores the independent and interactive effects of nutrients and food-web structure (as indexed by zooplankton size) on phytoplankton size structure by fitting time-series models to data from three lakes where both factors have been manipulated. I assessed phytoplankton size structure using three different approaches: small and large size classes, norm…
- Date Published:
- 1999
- Record Visibility:
- Public
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- Author(s):
- von Ende, C. N.
- Date Published:
- 1975
- Record Visibility:
- Public
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8
Article
- Author(s):
- Parker, R.A.
- Date Published:
- 1956
- Record Visibility:
- Public
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9
Article
- Author(s):
- Sanford, P.R.
- Abstract:
Analysis of cladoceran fossil remains from sediment cores from two suites of lakes–Tuesday, Paul, and Peter lakes in the Upper Peninsula of Michigan and the Herring River chain of lakes on Cape Cod, Massachusetts–reveals a high incidence of the cornuta form of Bosmina longirostris. This form is characterized by having relatively short, extremely down-curved or down- and out-curved antennules, as opposed to the normal Bosmina morphology of relatively long and slightly curved antennules. Cornut…
- Date Published:
- 1993
- Record Visibility:
- Public
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10
Article
- Author(s):
- Malueg, K.W.
- Date Published:
- 1963
- Record Visibility:
- Public
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- Author(s):
- S. R. Carpenter
- Abstract:
Blooms of blue-green algae are a serious water quality problem in many productive lakes (Plate 8; Cooke et al. 1986; Paerl 1988). Causes of blue-green blooms involve many factors, including mixing, trace metals, macronutrients, dissolved organic matter, microbial activity, and herbivory (Paerl 1988; Carpenter 1989). Of the many factors implicated, phosphorus loading and grazing are especially pertinent to management of nuisance blue-green blooms (Cooke et al. 1986; Shapiro and Wright 1984). T…
- Date Published:
- 1992
- Record Visibility:
- Public
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- Author(s):
- N. J. McCreary, S. R. Carpenter
- Abstract:
Interspecific and intraspecific interactions were examined in Eleocharis acicularis ( L.) R. & S. and Juncus pelocarpus forma submersus Fassett, two rhizomatous perennial plai;its which occur in the littoral zones of many temperate oligotrophic lakes. Reciprocal replacement series experiments were established in Roach Lake, U.S.A., at 4 ratios and 3 densities during the 1982 and 1983 growing seasons. Changes in biomass and in a variety of morphological characters were measured. Although …
- Date Published:
- 1987
- Record Visibility:
- Public