Entity

Time filter

Source Type

Green Bay, WI, United States

The University of Wisconsin–Green Bay is a public university located in Green Bay, Wisconsin, USA. It is part of the University of Wisconsin System and offers both bachelor and master degrees.UW–Green Bay, founded in 1965, originally had an environmental sustainability emphasis, and now offers a wide array of degrees. The university, unofficially, has the nickname "Eco U". The university's mascot is the Phoenix. Wikipedia.


Dornbush M.E.,University of Wisconsin - Green Bay | Wilsey B.J.,Iowa State University
Journal of Ecology | Year: 2010

1. In relatively fertile ecosystems, such as the tallgrass prairie, local species diversity is largely controlled by the competitive effects of community dominants. Despite the relative importance of soil resources in shaping competitive outcomes, we have a limited understanding of the ways by which plants partition below-ground space and resources while competing, and thus, how these interactions feedback to affect local diversity. 2. We experimentally tested whether potential rooting depth affected plant species diversity and composition by seeding 36 tallgrass prairie species into replicated, bare-ground plots in which soil depth was manipulated to produce shallow- (20 cm), medium- (42 cm) and deep-soil treatments all within one soil type. Because root architecture and foraging strategies differ among species, we hypothesized that soil depth alone could affect plant richness, diversity and community composition. 3. After 3 years, richness (S) significantly increased with soil depth (P < 0.0001), but there was no significant change in species diversity (P > 0.1) or composition (multi-response permutation procedure, P > 0.2). The lack of a depth effect upon diversity resulted from the opposing effect of increasing soil depth enhancing S, but decreasing evenness. 4. Species presence among depth treatments was strongly nested, with species found in shallow soils reflecting a subset of the species found in the medium-depth treatment, and the species found within the medium-depth treatment reflecting a subset of those found in the deepest soils. 5. All depth treatments contained the same dominant grasses, thus differences in S resulted from the nested loss of forbs. Conversely, increasing soil depth added sets of new species, but the specific identity of the species present appeared interchangeable among replicates of a given depth. 6. Synthesis. Our results provide the first field-based experimental evidence that altering soil depth alters species occurrence and diversity in predictable ways in seeded tallgrass prairie. Our results have important theoretical implications for understanding the processes promoting plant co-occurrence in grasslands, and generate testable hypotheses concerning the conditions under which root-niche partitioning is probably important for maintaining local richness in grasslands. Future work is needed to elucidate the generality and mechanistic basis of our results. © 2009 British Ecological Society. Source


Dolan D.M.,University of Wisconsin - Green Bay | Chapra S.C.,Tufts University
Journal of Great Lakes Research | Year: 2012

Phosphorus load estimates have been updated for all of the Great Lakes with an emphasis on lakes Superior, Michigan, Huron and Ontario for 1994-2008. Lake Erie phosphorus loads have been kept current with previous work and for completeness are reported here. A combination of modeling and data analysis is employed to evaluate whether target loads established by the Great Lakes Water Quality Agreement (GLWQA, 1978, Annex 3) have been and are currently being met. Data from federal, state, and provincial agencies were assembled and processed to yield annual estimates for all lakes and sources. A mass-balance model was used to check the consistency of loads and to estimate interlake transport. The analysis suggests that the GLWQA target loads have been consistently met for the main bodies of lakes Superior, Michigan and Huron. However, exceedances still persist for Saginaw Bay. For lakes Erie and Ontario, loadings are currently estimated to be at or just under the target (with some notable exceptions). Because interannual variability is high, the target loads have not been met consistently for the lower Great Lakes. The analysis also indicates that, because of decreasing TP concentrations in the lakes, interlake transport of TP has declined significantly since the mid-1970s. Thus, it is important that these changes be included in future assessments of compliance with TP load targets. Finally, detailed tables of the yearly (1994-2008) estimates are provided, as well as annual summaries by lake tributary basin (in Supplementary Information). © 2012 Elsevier B.V. Source


Rinfret S.R.,University of Wisconsin - Green Bay
Human Dimensions of Wildlife | Year: 2011

This article analyzes the influence of interest groups on the pre-proposal stage of the administrative rulemaking process. Kingdon's (1984, 2003) multiple streams model is used as a descriptive framework to structure an examination of interview data collected for three natural resource cases: (a) the U.S. Fish and Wildlife Service (USFWS) critical habitat designation for Nebraska's Salt Creek Tiger Beetle; (b) the USFWS critical habitat designation for Utah/Arizona Shivwits and Holmgren Milk Vetches; and (c) the USFWS delisting of the Northern Rocky Gray Wolf population from the endangered species list. The analysis provides support to argue that interest groups are using particular tactics that reflect Kingdon-like elements to influence the pre-proposal stage. © Taylor & Francis Group, LLC. Source


Sallmann J.,University of Wisconsin - Green Bay
Journal of Social Work Practice in the Addictions | Year: 2010

Little is known about the impact of prostitution involvement on women's substance use and recovery. Interpretive phenomenological data analysis was used to analyze transcribed, in-depth interviews conducted with 14 women recruited from a Midwestern program providing prostitution-specific services. Interviews focused on what it means to be a woman who has engaged in prostitution. Participants described patterns of using substances and exchanging sex as "going hand-in-hand," highlighting unique ways women understand the relationships between these phenomena and how they construct meaning. What emerges is a deeper understanding of the complexity and impact of these relationships, an issue not adequately addressed in existing literature. © Taylor & Francis Group, LLC. Source


Kauffman G.J.,University of Delaware | Vonck K.J.,University of Wisconsin - Green Bay
Water Resources Research | Year: 2011

The frequency and severity of drought in the Delaware Basin between 1600 and 2002 are examined using the Palmer Drought Severity Index (PDSI) estimated from tree ring data and correlated with reconstructed annual low flows. In the Delaware Basin, the most severe drought in nearly a century occurred during 1995-2002 as the Brandywine River, Delaware's largest surface water supply, ran dry at its mouth and declined to the lowest flow on record since 1912. To evaluate the long-term context of the 1995-2002 droughts given a variable hydroclimate, tree ring and PDSI data were correlated to reconstruct flows along the river to 1600, the beginning of European exploration to the Delaware Bay. Reconstructed PDSI and low flows were fit using general extreme value (GEV) distributions to estimate drought frequency. Some variability is present as reconstructed low flows tend to overestimate recorded streamflow in severe dry years, a finding reported by others. Some uncertainty appears in the correlations as the coefficient of multiple determination (CRSQ) between recorded and estimated PDSI from tree ring data is 0.50-0.54, a level of variance considered to be "quite good," and the coefficient of determination (r2) between PDSI and low flow is 0.52. Given the uncertainty, PDSI and reconstructed low flow data both agree that the most extreme drought in 400 years occurred during 1635, and the drought of 1995-2000 was historically extreme with differences only in the degree of severity. On the basis of PDSI, the 2002, 1999, and 1995 droughts were the sixth, twelfth, and seventeenth most severe in 400 years with frequencies of once every 50, 33, and 16 years, respectively. Based on low flow, the 2002, 1999, and 1995 droughts were the second, fourth, and ninth most severe since 1600 with frequencies of once every 200, 100, and 50 years, respectively. The record drought of 2002 has a low probability of reoccurring in any given year (2.0% by PDSI and 0.5% by low flow), but droughts nearly as severe have occurred during the 1630s, 1680s, 1820s, 1840s, 1860s, 1930s, 1940s, and 1960s. Increased intensities of drought low flows in Delaware during the late twentieth century through 2002 were coincident with population growth, watershed urbanization, and atmospheric warming although these associations were not correlated and further study is needed. Over 400 years of tree ring, PDSI, and reconstructed streamflow data indicate that the Delaware Basin record drought of 1995-2002 was a historically severe event with important implications for water supply and drought management. Droughts more severe than the record 2002 event have occurred in the past, and droughts may become even more intense should watershed urbanization and atmospheric warming continue in the future. Copyright 2011 by the American Geophysical Union. Source

Discover hidden collaborations