Termite sensitivity to temperature affects global wood decay rates
Termite sensitivity to temperature affects global wood decay rates
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DOI：
10.1126/science.abo3856
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发表时间：
2022-09-23
期刊：
影响因子：
56.9
通讯作者：
Zalamea, Paul-Camilo
中科院分区：
文献类型：
--
作者：
Zanne, Amy E.;Flores-Moreno, Habacuc;Zalamea, Paul-Camilo
枯木是一个巨大的全球碳储存库，其储存量部分取决于生物腐烂。已知微生物木材腐烂率会对温度和降水量的变化做出反应。白蚁也是热带地区重要的分解者，但研究较少。需要了解其气候敏感性，以估计气候变化对木材碳库的影响。使用来自六大洲133个地点的数据，我们发现白蚁木材的发现和消费对温度高度敏感（温度每升高10摄氏度，腐烂增加>6.8倍）-甚至比微生物更敏感。在热带季节性森林、热带稀树草原和亚热带沙漠中，白蚁腐烂的影响最大。随着热带化（即，随着气候变暖转移到热带气候），白蚁木材腐烂可能会随着白蚁进入地球表面的更多而增加。
Deadwood is a large global carbon store with its store size partially determined by biotic decay. Microbial wood decay rates are known to respond to changing temperature and precipitation. Termites are also important decomposers in the tropics but are less well studied. An understanding of their climate sensitivities is needed to estimate climate change effects on wood carbon pools. Using data from 133 sites spanning six continents, we found that termite wood discovery and consumption were highly sensitive to temperature (with decay increasing >6.8 times per 10 degrees C increase in temperature)-even more so than microbes. Termite decay effects were greatest in tropical seasonal forests, tropical savannas, and subtropical deserts. With tropicalization (i.e., warming shifts to tropical climates), termite wood decay will likely increase as termites access more of Earth's surface.