Quantifying Effects of Residential Lakeshore Development on Littoral Fishes and Habitat PDF Download
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Author: Aaron Kenneth Jubar
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 150
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Book Description
Author: Aaron Kenneth Jubar
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 150
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Book Description
Author: Kousei Martin Perales
Publisher:
ISBN:
Category :
Languages : en
Pages : 118
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Book Description
Lake littoral zones play an integral role in production, community assembly, and the coupling of ecosystem components. These areas are critical habitat for many species due to its structural complexity in the form of abundant habitat. Because these areas are essential components of lakes, I explore several drivers in littoral zones. I have taken cross-system comparisons, long-term observations, and detailed within lake observations and combined them with modeling to ask the following questions about littoral zone habitat and communities: what are strong drivers of littoral zone habitat quality, and what is the role of this habitat? In Chapter 1, I quantify lake water level changes during a multiyear drought. These lakes experienced nearly identical weather and climate but had divergent responses in terms of water level loss. This variability was explained by lake and landscape characteristics that served as proxies for a lakes' hydrologic budget, which ultimately mediate the response to climate. I found that seepage lakes responded the most dramatically, and the water level changes translated to more substantial losses of coarse woody habitat (CWH). Thus, droughts and the associated impacts on habitat may be a regional driver of change. In Chapter 2, I characterized fish community and habitat change across a lakeshore residential development (LRD) gradient. I quantified the typical habitat changes associated with increasing LRD, including decreased CWH and riparian forest density and alterations in littoral substrates. Additionally, I identified winners and losers in the fish community across an LRD gradient. I found that fish with similar responses to LRD had vastly different habitat associations, suggesting that other drivers associated with LRD are likely also affecting communities. In Chapter 3, I examine the spatiotemporal dynamics of an invasive rusty crayfish (Faxonius rusticus) and native virile crayfish (F. virilis) population in the context of a whole-lake experiment. Eight years of rusty crayfish removals successfully suppressed a high abundance population, which allowed macrophytes, macroinvertebrates, Lepomis sunfishes, and virile crayfish to recover. In examining the within lake spatiotemporal dynamics of both species, I learn that the virile crayfish recovery was highly localized, and influenced by littoral habitat and the abundance of rusty crayfish.
Author: Sara M. Schmidt
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 316
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Book Description
Author: Kevin M. Boswell
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 512
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Book Description
Author: Thomas W. Bernthal
Publisher:
ISBN:
Category : Shore protection
Languages : en
Pages : 74
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Book Description
Author: Leandro Miranda
Publisher:
ISBN: 9780692798720
Category :
Languages : en
Pages : 306
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 1194
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Book Description
Author: Karl M. Wantzen
Publisher: Springer Science & Business Media
ISBN: 1402091923
Category : Technology & Engineering
Languages : en
Pages : 184
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Book Description
Most aquatic ecosystems have variable water levels. These water-level fluctuations (WLF) have multiple effects on the organisms above and below the waterline. Natural WLF patterns in lakes guarantee both productivity and biodiversity, while untimely floods and droughts may have negative effects. Human impacts on WLF have led to a stabilization of the water levels of many lakes by hydraulic regulation, untimely drawdown due to water use, or floods due to water release from hydropower plants in the catchments. This book provides a first review in this field. It presents selected papers on the ecological effects of WLF in lakes, resulting from a workshop at the University of Konstanz in winter 2005. Issues addressed here include the extent of WLF, and analyses of their effects on different groups of biota from microorganisms to vertebrates. Applied issues include recommendations for the hydrological management of regulated lakes to reduce negative impacts, and a conceptual framework is delivered by an extension of the floodpulse concept for lakes. Current impacts on water use, including increasing demands on drinking and irrigation water, hydropower etc., and climate change effects on WLF make this book an essential resource for aquatic ecologists, engineers, and decision-makers dealing with the management of lake ecosystems and their catchments.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309082951
Category : Science
Languages : en
Pages : 449
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Book Description
The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.
