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首页> 外文期刊>Ocean & coastal management >Temporal shift of sea turtle nest sites in an eroding barrier island beach
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Temporal shift of sea turtle nest sites in an eroding barrier island beach

机译：屏障岛海滩侵蚀中海龟巢址的时间变化

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Shoreline changes affect functionality of a sandy beach as a wildlife habitat and coastal erosion is among the primary causes of the changes. We examined temporal shifts in locations where loggerheads placed nests in relation to coastal erosion along a barrier island beach in the northern Gulf of Mexico. We first confirmed consistency in long-term (1855-2001), short-term (1976-2001), and more recent (2002-2012) shoreline change rates in two adjacent beach sections, one historically eroding (west beach) and the other accreting (east beach). The mean annual shoreline change rate in the two sections was significantly different in all time periods. The recent (1998-2012) mean change rate was 10.9 9.9 m/year in the west beach and 2.8 4.9 m/year in the east beach, which resulted in the loss of about 70% and 30% of area in the west and east beaches, respectively. Loggerheads nested significantly closer to the vegetation line in 2012 than in 2002 in the west beach but the difference between the two time periods was not significant in the east beach. However, the distance from nests to the vegetation line from 2002 to 2014 was significantly reduced annually in both beaches; on average, loggerheads nested closer to the vegetation line by 9 m/year in the west beach and 5.8 m/year in the east beach. The observed shoreline change rate and corresponding shift of nest placement sites, combined with the forecasted future beach loss, highlighted the importance of addressing the issue of beach erosion to conserve sandy beach habitats.
机译：海岸线的变化会影响沙滩的功能，因为野生动植物的栖息地和海岸侵蚀是造成变化的主要原因。我们研究了在墨西哥湾北部的隔离岛海滩上，沿海地区与牛头head相关的巢穴位置随时间变化的情况。我们首先确认了两个相邻海滩区域的长期（1855-2001年），短期（1976-2001年）和最近（2002-2012年）海岸线变化率的一致性，其中一个在历史上正在侵蚀（西海滩），而另一个在侵蚀逐渐增加（东海滩）。在所有时间段中，两个部分的年平均海岸线变化率均存在显着差异。最近（1998-2012年）的平均变化率在西海滩为10.9 9.9 m /年，在东海滩为2.8 4.9 m /年，这导致西部和东部分别损失了约70％和30％的面积海滩。与2002年相比，2012年在西滩，ger的嵌套明显更接近植被线，但在东滩，这两个时间段之间的差异并不明显。但是，从2002年到2014年，两个海滩的巢穴到植被线的距离每年都显着减少。平均而言，西滩的9头筑巢更接近植被线，每年9 m，东滩的头筑巢，每年5.8 m。观察到的海岸线变化率和巢穴位置的相应变化，再加上预测的未来海滩损失，突出了解决海滩侵蚀问题以保护沙滩栖息地的重要性。

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