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首页> 外文学位 >The impacts of urbanization on endangered Florida Key deer (Odocoileus virginianus).
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The impacts of urbanization on endangered Florida Key deer (Odocoileus virginianus).

机译：城市化对濒临灭绝的佛罗里达关键鹿（Odocoileus virginianus）的影响。

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Conservation of native wildlife is becoming increasingly difficult due to continued human population growth and expansion. As the human population continues to increase, so does the rate of consumption of our natural resources. As competition for resources between man and wildlife continues, it is important to understand the effects of urbanization on species. Endangered Key deer (Odocoileus virginianus clavium) are endemic to the Florida Keys archipelago stretching southwest off the southern tip of peninsular Florida. Key deer range is restricted to the Lower Florida Keys with approximately 60% residing on Big Pine Key and 15% residing on No Name Key which have undergone rapid human population growth and development over the past 30 years. Urban development and its associated risk factors (i.e., habitat loss and fragmentation, deer domestication, and deer-vehicle collisions) have been cited as the greatest threat to the Key deer population. For my dissertation research, I evaluated the impacts of 30 years of development on the Key deer population. My results suggest that increased habitat fragmentation and increased road traffic have created areas of varying habitat quality and mortality risk and have resulted in a source-sink system for Key deer on Big Pine Key. In my examination of Key deer metapopulation dynamics, I found a low probability of deer colonizing 2 target outer islands (Sugarloaf and Cudjoe) through dispersal alone in the next 20 years. Further, I examined the impacts of urbanization on changes in Key deer population dynamics, behavior, and morphology. Collectively, my results suggest that over the past 30 years Key deer have become more urbanized, which in turn has influenced Key deer behavior and population viability. Behavioral adaptations due to deer plasticity appear to have provided Key deer with mechanisms to persist in a changing environment due to urbanization. However, the future ability of Key deer to persist in a continuously urbanizing environment cannot be predicted. At some threshold, urban development would become unsustainable, and, unlike other forms of habitat change or environmental disturbances, urban development is in most cases irreversible, requiring careful planning in habitat conservation strategies.
机译：由于人口的持续增长和扩展，保护本地野生动植物变得越来越困难。随着人口的继续增加，我们自然资源的消耗率也在增加。随着人类与野生动植物之间对资源的竞争不断，了解城市化对物种的影响非常重要。濒临灭绝的Key鹿（Odocoileus virginianus clavium）是佛罗里达群岛的特有物种，向西南延伸到佛罗里达半岛的南端。在过去的30年中，人口的快速增长和发展已限制了佛罗里达州的键鹿范围，其中约60％位于大松树钥匙上，而15％位于无名钥匙上。城市发展及其相关的风险因素（即栖息地的丧失和破碎化，鹿的驯养和鹿与汽车的碰撞）被认为是对主要鹿种群的最大威胁。在我的论文研究中，我评估了30年的发展对主要鹿种群的影响。我的结果表明，栖息地破碎化程度的增加和道路交通的增加，造成了栖息地质量和死亡风险各异的地区，并导致了大松树上的小鹿的源库系统。在我对主要鹿的种群动态的研究中，我发现在接下来的20年中，仅通过分散就可以使鹿定居在两个目标外岛（Sugarloaf和Cudjoe）的可能性很小。此外，我研究了城市化对主要鹿种群动态，行为和形态变化的影响。总的来说，我的研究结果表明，过去30年来，Key鹿的城市化程度更高，进而影响了Key鹿的行为和种群生存能力。鹿可塑性引起的行为适应似乎为小鹿提供了因城市化而在不断变化的环境中持续存在的机制。但是，无法预测Key鹿在持续城市化环境中的未来生存能力。在某种程度上，城市发展将变得不可持续，与其他形式的栖息地变化或环境扰动不同，城市发展在大多数情况下是不可逆的，因此需要在栖息地保护策略中进行仔细规划。

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