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Widespread mangrove damage resulting from the 2017 Atlantic Mega Hurricane Season
Environmental Research Letters ( IF 5.8 ) Pub Date : 2020-06-04 , DOI: 10.1088/1748-9326/ab82cf
Paul J Taillie 1 , Rosa Roman-Cuesta 2 , David Lagomasino 3 , Miguel Cifuentes-Jara 4 , Temilola Fatoyinbo 5 , Lesley E Ott 6 , Benjamin Poulter 5
Affiliation  

Comprised of 17 named tropical storms, 6 of which were major hurricanes, the 2017 Atlantic hurricane season ranked as one of the most damaging and costly hurricane seasons on record. In addition to socio-economic impacts, many previous studies have shown that important coastal ecosystems like mangroves are shaped by severe storms. However, little is known about how the cumulative effects of storms from the entire hurricane seasons affect mangroves across large regions. We used satellite imagery from the entire Caribbean and Gulf of Mexico region to show that 2017 resulted in disproportionate mangrove damage compared to baseline responses over the previous 8 years, and estimated vegetation responses over the past 38 years. Specifically, we observed 30 times more mangrove damage, via a reduction in the normalized difference vegetation index (NDVI), during 2017 compared to any of the 8 previous hurricane seasons, and most (72%) of this damage persisted throughout the 7-month post-hurricane season period as indicated by no NDVI recovery. Furthermore, spatially explicit wind speed, rainfall, and canopy height data showed that mangrove damage primarily resulted from high maximum wind speeds, but flooding (cumulative rainfall) and mangrove structure (canopy height) were also important predictors of damage. While mangroves are known to be resilient to hurricane impacts, our results suggest that increasingly frequent mega-hurricane seasons in the Caribbean region will dramatically alter mangrove disturbance dynamics.

中文翻译:

2017 年大西洋超级飓风季对红树林造成大面积破坏

2017 年大西洋飓风季由 17 场命名热带风暴组成,其中 6 场是主要飓风,被列为有记录以来最具破坏性和损失最惨重的飓风季之一。除了社会经济影响之外,许多先前的研究表明,红树林等重要的沿海生态系统受到严重风暴的影响。然而,关于整个飓风季节风暴的累积影响如何影响大片地区的红树林,我们知之甚少。我们使用来自整个加勒比海和墨西哥湾地区的卫星图像显示,与过去 8 年的基线响应和过去 38 年的估计植被响应相比,2017 年导致了不成比例的红树林破坏。具体而言,我们通过归一化差异植被指数 (NDVI) 的降低观察到红树林破坏程度增加了 30 倍,与之前 8 个飓风季节中的任何一个相比,2017 年期间,大部分 (72%) 的损害在飓风后的 7 个月期间持续存在,这表明 NDVI 没有恢复。此外,空间显性风速、降雨量和冠层高度数据表明,红树林破坏主要是由高最大风速造成的,但洪水(累积降雨量)和红树林结构(冠层高度)也是破坏的重要预测因素。虽然众所周知红树林能够抵御飓风的影响,但我们的研究结果表明,加勒比地区日益频繁的特大飓风季节将极大地改变红树林的扰动动态。大部分 (72%) 这种损害在整个飓风后的 7 个月期间持续存在,这表明 NDVI 没有恢复。此外,空间显性风速、降雨量和冠层高度数据表明,红树林破坏主要是由高最大风速造成的,但洪水(累积降雨量)和红树林结构(冠层高度)也是破坏的重要预测因素。虽然众所周知红树林能够抵御飓风的影响,但我们的研究结果表明,加勒比地区日益频繁的特大飓风季节将极大地改变红树林的扰动动态。大部分 (72%) 这种损害在整个飓风后的 7 个月期间持续存在,这表明 NDVI 没有恢复。此外,空间显性风速、降雨量和冠层高度数据表明,红树林破坏主要是由高最大风速造成的,但洪水(累积降雨量)和红树林结构(冠层高度)也是破坏的重要预测因素。虽然众所周知红树林能够抵御飓风的影响,但我们的研究结果表明,加勒比地区日益频繁的特大飓风季节将极大地改变红树林的扰动动态。但洪水(累积降雨)和红树林结构(树冠高度)也是破坏的重要预测因素。虽然众所周知红树林能够抵御飓风的影响,但我们的研究结果表明,加勒比地区日益频繁的特大飓风季节将极大地改变红树林的扰动动态。但洪水(累积降雨)和红树林结构(树冠高度)也是破坏的重要预测因素。虽然众所周知红树林能够抵御飓风的影响,但我们的研究结果表明,加勒比地区日益频繁的特大飓风季节将极大地改变红树林的扰动动态。
更新日期:2020-06-04
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