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首页> 外文期刊>Waterbirds >Distribution and Temporal Trends of Western Reef Heron (Egretta gularis) Populations along the Arabian Gulf Coast of Abu Dhabi, United Arab Emirates
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Distribution and Temporal Trends of Western Reef Heron (Egretta gularis) Populations along the Arabian Gulf Coast of Abu Dhabi, United Arab Emirates

机译:阿拉伯联合酋长国阿布扎比阿拉伯海湾海岸的西礁苍鹭(egretta gularis)群体的分布和时间趋势

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The Arabian Gulf Coast of Abu Dhabi, United Arab Emirates, consists of highly productive seagrass (Halodule universis, Halophila ovalis and Halophila sttipulocea) and mangrove (Avicennia marina) habitats that are essential breeding and non-breeding areas for vast numbers of waterbirds. Due to their dependence on these coastal habitats, waterbirds such as the Western Reef Heron (Egretta gularis) can act as important bioindicators of ecosystem health. The estimated global population size of Western Reef Herons is roughly 10,000 to 100,000 individuals. While populations are currently considered stable, many important breeding and overwintering areas of the Western Reef Heron remain unprotected. Line transect counts were conducted at study sites along the Arabian Gulf Coast of Abu Dhabi monthly throughout 2006-2015. Using a mixed effects model, it was found that both year (F-1,F-1132 = 29.15; P = & 0.001) and month (F-11,F-1132 = 2.32; P = 0.011) had significant influences on the number of birds 1 counted at any given site: however, there was no statistically significant interaction between year and month (F-11,F-1132 = 1.24; P = 0.253). While there was an overall non-significant decrease in counts across years (t(495) = -1.40; P = 0.163), there were significant inverse relationships between year and count at the Al Aryam (t(485) = -13.55; P = & 0.001) and Abu Al Abyad (t(485) = -2.23; P = 0.026) sites, suggesting annual relative abundance is declining in these areas. Further research and monitoring of the Abu Dhabi Western Reef Heron population is recommended due to continued destruction and degradation of critical waterbird habitat.
机译:阿拉伯·阿联酋阿布扎比的阿拉伯海湾海岸包括高效的海草(Halodule Universis,Halodule Universis,Halophila Ovalis和Halophila Sttipulocea)和红树林(Avicennia Marina)栖息地,这是大量水鸟的必要育种和非育种区。由于他们对这些沿海栖息地的依赖,西礁苍鹭(Egretta Gularis)等水鸟可以充当生态系统健康的重要生物indicer。估计的西礁苍鹭的全球人口大小约为10,000至100,000人。虽然人口目前被认为是稳定的,但西礁苍鹭的许多重要育种和过冬地区仍然没有保护。在整个2006 - 2015年的Abu Dhabi阿拉伯海湾海岸的研究地点进行了线路横断数。使用混合效果模型,发现两年(F-1,F-1132 = 29.15; p =& 0.001)和月份(F-11,F-1132 = 2.32; p = 0.011)具有重要意义对任何给定部位计数的鸟类数量的影响:然而,年和月间没有统计上显着的相互作用(F-11,F-1132 = 1.24; P = 0.253)。虽然跨越多年的计数总体上的总体显着下降(T(495)= -1.40; p = 0.163),但在Al Aryam之间存在显着的反比关系(T(485)= -13.55; p =& 0.001)和abu al abyad(t(485)= -2.23; p = 0.026)位点,表明年度相对丰度在这些领域下降。由于临界水鸟栖息地的持续破坏和降解,建议推荐对阿布扎比西礁牧草苍鹭人口的进一步研究和监测。

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