连续扰动事件中海带林避难所的驱动因素

IF 5.6 1区 环境科学与生态学 Q1 ECOLOGY
Katherine C. Cavanaugh, Robert E. Weiss, Tom W. Bell, Laura Rogers-Bennett, Kyle C. Cavanaugh
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引用次数: 0

摘要

海洋温度升高导致许多重要生态物种大规模减少,包括海带森林。不同海景的空间异质性可以保护海带个体和小种群免受热胁迫和营养限制。上升流地区的生境特征可能促进了深层冷水向浅层系统的输送,但对这些气候避难所的时空发生或稳定性知之甚少。然而,气候避难所的海带也可能经历其他压力因素,例如海带食草动物的过度放牧,降低了它们的效率。在这里,我们使用由CubeSat星座数据生成的高分辨率海带冠层图来描述加州北部海带的持久性。在严重的海洋热浪期间,由于温度升高和营养限制,以及紫海胆持续的强烈放牧压力,导致海带丰度急剧下降。海带的持续存在与水温相对较低的局部地区和海景特征(如浅深度和低复杂性的水深测量)有关,这可能为过度放牧提供了避难所。然而,该地区非常小比例的海带林表现出高持久性,在研究的9年中,许多森林仅在一到两年存在。随着时间的推移,大多数海带斑块在空间上并不稳定。最初,海带的存在与气候难民一致,但随着2019年后过度放牧成为海带分布的主要驱动因素,海带转向了能够提供保护免受放牧压力的地区。合成。在2014-2016年海洋热浪导致的海洋温度升高期间,具有局部上升流的较冷地区充当了气候避难所,支持了营养丰富的环境,减轻了海带森林的热应激。然而,这些温度庇护区在空间上往往与提供放牧压力保护的区域不重叠,即使在温度庇护区内,如果放牧压力仍然很高,海带森林也容易受到未来变暖的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Drivers of kelp forest refugia during successive disturbance events

Drivers of kelp forest refugia during successive disturbance events

Drivers of kelp forest refugia during successive disturbance events

Drivers of kelp forest refugia during successive disturbance events

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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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