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首页> 外文期刊>Oecologia >Sea turtle species vary in their susceptibility to tropical cyclones
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Sea turtle species vary in their susceptibility to tropical cyclones

机译：海龟种类对热带气旋的敏感性不同

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Severe climatic events affect all species, but there is little quantitative knowledge of how sympatric species react to such situations. We compared the reproductive seasonality of sea turtles that nest sympatrically with their vulnerability to tropical cyclones (in this study, “tropical cyclone” refers to tropical storms and hurricanes), which are increasing in severity due to changes in global climate. Storm surges significantly decreased reproductive output by lowering the number of nests that hatched and the number of hatchlings that emerged from nests, but the severity of this effect varied by species. Leatherback turtles (Dermochelys coriacea) began nesting earliest and most offspring hatched before the tropical cyclone season arrived, resulting in little negative effect. Loggerhead turtles (Caretta caretta) nested intermediately, and only nests laid late in the season were inundated with seawater during storm surges. Green turtles (Chelonia mydas) nested last, and their entire nesting season occurred during the tropical cyclone season; this resulted in a majority (79%) of green turtle nests incubating in September, when tropical cyclones are most likely to occur. Since this timing overlaps considerably with the tropical cyclone season, the developing eggs and nests are extremely vulnerable to storm surges. Increases in the severity of tropical cyclones may cause green turtle nesting success to worsen in the future. However, published literature suggests that loggerhead turtles are nesting earlier in the season and shortening their nesting seasons in response to increasing sea surface temperatures caused by global climate change. This may cause loggerhead reproductive success to improve in the future because more nests will hatch before the onset of tropical cyclones. Our data clearly indicate that sympatric species using the same resources are affected differently by tropical cyclones due to slight variations in the seasonal timing of nesting, a key life history process.
机译：严重的气候事件影响所有物种，但是关于同属物种如何对这种情况做出反应的定量知识很少。我们比较了同时筑巢的海龟的繁殖季节及其对热带气旋的脆弱性（在本研究中，“热带气旋”是指热带风暴和飓风），由于全球气候的变化，海龟的严重性在增加。风暴潮通过减少孵化的巢穴的数量和从巢穴中孵出的幼体的数量而大大降低了生殖产量，但是这种影响的严重程度因物种而异。棱皮海龟（Dermochelys coriacea）最早开始筑巢，大多数后代在热带气旋季节到来之前孵化，因此几乎没有负面影响。 ger（Caretta caretta）中间筑巢，在风暴潮期间只有海水淹没在季节后期才筑巢。绿海龟（Chelonia mydas）最后筑巢，整个筑巢季节发生在热带气旋季节。这导致大部分（79％）的绿海龟巢在9月孵化，那时最有可能发生热带气旋。由于这一时间与热带气旋季节有很大重叠，因此，正在发育的卵和巢极易受到风暴潮的影响。热带气旋严重性的增加可能会导致绿海龟筑巢的成功将来恶化。但是，已发表的文献表明，由于全球气候变化导致海表温度升高，increasing龟在该季节早些时候筑巢，并缩短了筑巢季节。这可能会导致鱼的繁殖成功在未来得到改善，因为在热带气旋发作之前，会有更多的巢孵化。我们的数据清楚地表明，由于筑巢的季节性时间（关键的生活史过程）略有变化，使用相同资源的同胞物种受到热带气旋的影响不同。

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