Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15455 |
Ocean acidification locks algal communities in a species‐poor early successional stage | |
Ben P. Harvey; Koetsu Kon; Sylvain Agostini; Shigeki Wada; Jason M. Hall‐; Spencer | |
2021-01-10 | |
发表期刊 | Global Change Biology |
出版年 | 2021 |
英文摘要 | Long‐term exposure to CO2‐enriched waters can considerably alter marine biological community development, often resulting in simplified systems dominated by turf algae that possess reduced biodiversity and low ecological complexity. Current understanding of the underlying processes by which ocean acidification alters biological community development and stability remains limited, making the management of such shifts problematic. Here, we deployed recruitment tiles in reference (pHT 8.137 ± 0.056 SD) and CO2‐enriched conditions (pHT 7.788 ± 0.105 SD) at a volcanic CO2 seep in Japan to assess the underlying processes and patterns of algal community development. We assessed (i) algal community succession in two different seasons (Cooler months: January–July, and warmer months: July–January), (ii) the effects of initial community composition on subsequent community succession (by reciprocally transplanting preestablished communities for a further 6 months), and (iii) the community production of resulting communities, to assess how their functioning was altered (following 12 months recruitment). Settlement tiles became dominated by turf algae under CO2‐enrichment and had lower biomass, diversity and complexity, a pattern consistent across seasons. This locked the community in a species‐poor early successional stage. In terms of community functioning, the elevated pCO2 community had greater net community production, but this did not result in increased algal community cover, biomass, biodiversity or structural complexity. Taken together, this shows that both new and established communities become simplified by rising CO2 levels. Our transplant of preestablished communities from enriched CO2 to reference conditions demonstrated their high resilience, since they became indistinguishable from communities maintained entirely in reference conditions. This shows that meaningful reductions in pCO2 can enable the recovery of algal communities. By understanding the ecological processes responsible for driving shifts in community composition, we can better assess how communities are likely to be altered by ocean acidification. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/311321 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Ben P. Harvey,Koetsu Kon,Sylvain Agostini,等. Ocean acidification locks algal communities in a species‐poor early successional stage[J]. Global Change Biology,2021. |
APA | Ben P. Harvey,Koetsu Kon,Sylvain Agostini,Shigeki Wada,Jason M. Hall‐,&Spencer.(2021).Ocean acidification locks algal communities in a species‐poor early successional stage.Global Change Biology. |
MLA | Ben P. Harvey,et al."Ocean acidification locks algal communities in a species‐poor early successional stage".Global Change Biology (2021). |
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