Substrate size mediates thermal stress in the rocky intertidal
Substrate size mediates thermal stress in the rocky intertidal
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DOI：
10.1890/10-0717.1
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发表时间：
2011-03-01
期刊：
影响因子：
4.8
通讯作者：
Leslie, Heather M.
中科院分区：
文献类型：
--
作者：
Gedan, Keryn B.;Bernhardt, Joanna;Leslie, Heather M.
物理因素的变化，如坡度、方向和风暴露，塑造热条件。基质大小的变化在许多生境中是常见的，但其对生物体的热影响还没有很好的特点。较大的基板应保持更热稳定，并作为热避难所的相关生物在短期内，热应力期间，如正午温度峰值或潮汐暴露。在观察和移植和热集成实验中，我们发现，较大的岩石基板保持凉爽，有利于藤壶Semibalanus balanoides在高潮间带的生存相对于小基板在炎热的夏季在南部新英格兰，美国。然而，在热良性的北方新英格兰，岩石基板大小对藤壶分布没有影响，表明基板大小的热效应是由区域气候介导的。
Variation in physical factors, such as slope, orientation, and wind exposure, shapes thermal conditions. Variation in substrate size is common in many habitats, but its thermal consequences for organisms are not well characterized. Larger substrates should remain more thermally stable and act as thermal refuges for associated organisms during short, thermally stressful periods such as midday temperature peaks or tidal exposure. In observations and a transplant and thermal integration experiment, we found that larger rock substrates stayed cooler and facilitated greater survival of the barnacle Semibalanus balanoides in the high intertidal relative to small substrates during the hot summer months in southern New England, USA. However, in thermally benign northern New England, rock substrate size had no effect on barnacle distributions, indicating that the thermal effects of substrate size are mediated by regional climate.