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| DOI | 10.1111/gcb.17300 |
| In situ decrease in rhodolith growth associated with Arctic climate change | |
| 发表日期 | 2024 |
| ISSN | 1354-1013 |
| EISSN | 1365-2486 |
| 起始页码 | 30 |
| 结束页码 | 5 |
| 卷号 | 30期号:5 |
| 英文摘要 | Rhodoliths built by crustose coralline algae (CCA) are ecosystem engineers of global importance. In the Arctic photic zone, their three-dimensional growth emulates the habitat complexity of coral reefs but with a far slower growth rate, growing at micrometers per year rather than millimeters. While climate change is known to exert various impacts on the CCA's calcite skeleton, including geochemical and structural alterations, field observations of net growth over decade-long timescales are lacking. Here, we use a temporally explicit model to show that rising ocean temperatures over nearly 100 years were associated with reduced rhodolith growth at different depths in the Arctic. Over the past 90 years, the median growth rate was 85 mu m year(-1) but each degrees C increase in summer seawater temperature decreased growth by a mean of 8.9 mu m (95% confidence intervals = 1.32-16.60 mu m degrees C-1, p < .05). The decrease was expressed for rhodolith occurrences in 11 and 27 m water depth but not at 46 m, also having the shortest time series (1991-2015). Although increasing temperatures can spur plant growth, we suggest anthropogenic climate change has either exceeded the population thermal optimum for these CCA, or synergistic effects of warming, ocean acidification, and/or increasing turbidity impair rhodolith growth. Rhodoliths built by calcitic CCA are important habitat providers worldwide, so decreased growth would lead to yet another facet of anthropogenic habitat loss. |
| 英文关键词 | calcification; crustose coralline algae (CCA); ecosystem engineers; global warming; micro-computed tomography; rhodoliths; time series |
| 语种 | 英语 |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
| WOS记录号 | WOS:001220132800001 |
| 来源期刊 | GLOBAL CHANGE BIOLOGY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/309787 |
| 作者单位 | University of Erlangen Nuremberg; Helmholtz Association; Alfred Wegener Institute, Helmholtz Centre for Polar & Marine Research; Senckenberg Gesellschaft fur Naturforschung (SGN) |
| 推荐引用方式 GB/T 7714 | . In situ decrease in rhodolith growth associated with Arctic climate change[J],2024,30(5). |
| APA | (2024).In situ decrease in rhodolith growth associated with Arctic climate change.GLOBAL CHANGE BIOLOGY,30(5). |
| MLA | "In situ decrease in rhodolith growth associated with Arctic climate change".GLOBAL CHANGE BIOLOGY 30.5(2024). |
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