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Quantitative Paleobiogeography of Maysvillian (Late Ordovician) Brachiopod Species of the Cincinnati Arch: a Test of Niche Modeling Methods for Paleobiogeographic ReconstructionWalls, Bradley J. 14 August 2009 (has links)
No description available.
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Perceptions of Infrastructure, Flood Management, and Environmental Redevelopment in the University Area, Hillsborough County, FloridaHinds, Kris-An K. 28 June 2019 (has links)
The University Area (UA), a low-income, unincorporated neighborhood in Hillsborough County, Florida, is a site of sustainable redevelopment by the local government and nonprofit organizations. Throughout the past decade, the transitions in local and state political climates have significantly impacted the residents’ ability to advocate for infrastructural and environmental improvement to the site. This thesis discusses the findings of a research project dedicated to exploring resident perspectives of stormwater management, infrastructure, and the redevelopment currently occurring the University Area. Drawing from theoretical concepts in political ecology, environmental justice, and the interplay of agency and structure, this research investigates the impacts of flooding on the UA’s residents and infrastructure; specifically, the ways it affects the population’s interaction with their environment. Data were collected using a mixed methods approach including participant observation; semi structured interviews with residents, developers, and community organization employees; ground truthing the area to verify the location of the stormwater drains present in a selection of the UA; a historical review of the area’s land use; and analysis of critical environmental justice databases. Findings indicate that flooding in the University Area is related to historical oppressive housing strategies against minority and low-income populations. Results found that flooding in UA is caused by a combination of faulty infrastructure (impervious surfaces and a subpar, unmaintained stormwater system), increasing rain events (climate change), and the lack of municipality support (power dynamics). The oppressive power dynamic present in the relationship between the residents and their respective property owners and the county municipality services exacerbates problems with flooding. Redevelopment plans in the University Area must address the effects of historical marginalization and disenfranchisement of the current residents with respect to housing segregation and lack of municipality support. Without these considerations, the cycle of disenfranchisement faced by the current residents of the UA will likely continue and worsen over time.
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The Dogma of the 30 Meter Riparian Buffer: The Case of the Boreal Toad (Bufo boreas boreas)Goates, Michael C. 15 March 2006 (has links) (PDF)
We tested the adequacy of standard 30 m riparian buffers for semi-aquatic vertebrate species, using the boreal toad (Bufo boreas boreas) as an example. We monitored toad populations in south-central Utah using radio telemetry during the summers of 2003 and 2004. We found 30 m buffers inadequate for protecting boreal toads and suggest this is likely true for other species as well. Managers must consider several factors when constructing buffers: (1) Buffer requirements may vary by time of year. While we located toads most often in wet habitats, toads commonly utilized upland habitats in late summer, occasionally at distances greater than 100 m from water. (2) A single year's observation may not be sufficient to establish adequate buffers. Toads moved into upland habitats more often and at greater distances from water (> or = 30 m) during the wetter, cooler weather conditions of 2004 than in 2003. (3) Buffer requirements may differ by sex. Male toads appeared to have stronger selection for wetland habitats than females. Females moved greater distances from water than males, often outside of buffer areas. (4) Buffer requirements may differ by location. 30 m buffers contained 82.4% of all observations, though results varied between 50.0 and 97.2%, depending on breeding location. Finally (5) All habitat requirements should be considered when establishing buffers. Many small, unmapped streams and seeps utilized by toads for hibernation were located outside buffer zones. After ground truthing and extending 30 m buffers around these habitats, the percentage of all observations within 30 m buffers increased to 92.4%. Managers need to be aware of the accuracy of digital and other mapping sources used in creating buffers and to incorporated all critical habitats in conservation buffers. Our boreal toad example suggests that ground truthing may be the most important factor in establishing effective buffer zones.
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A Study on Applying Learning Techniques to Remote Sensing DataRadhakrishnan, Aswathnarayan 06 October 2020 (has links)
No description available.
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