气候变化领域集成服务门户(CCPortal): Effects of elevated CO2 and temperature on an intertidal meiobenthic community

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.859078
	Effects of elevated CO2 and temperature on an intertidal meiobenthic community
	Meadows; A S; Ingels; Jeroen; Widdicombe; Stephen; Hale; Rachel; Rundle; Simon
发布日期	2015-03-23
数据集类型	dataset
英文关键词	Amphimonhystera sp. ; Benthos ; Biomass/Abundance/Elemental composition ; Bottles or small containers/Aquaria ( 20 L) ; Coast and continental shelf ; Community composition and diversity ; Entire community ; Laboratory experiment ; North Atlantic ; Rocky-shore community ; Temperate ; Temperature
英文简介	In the near future, the marine environment is likely to be subjected to simultaneous increases in temperature and decreased pH. The potential effects of these changes on intertidal, meiofaunal assemblages were investigated using a mesocosm experiment. Artificial Substrate Units containing meiofauna from the extreme low intertidal zone were exposed for 60 days to eight experimental treatments (four replicates for each treatment) comprising four pH levels: 8.0 (ambient control), 7.7 & 7.3 (predicted changes associated with ocean acidification), and 6.7 (CO2 point-source leakage from geological storage), crossed with two temperatures: 12 °C (ambient control) and 16 °C (predicted). Community structure, measured using major meiofauna taxa was significantly affected by pH and temperature. Copepods and copepodites showed the greatest decline in abundance in response to low pH and elevated temperature. Nematodes increased in abundance in response to low pH and temperature rise, possibly caused by decreased predation and competition for food owing to the declining macrofauna density. Nematode species composition changed significantly between the different treatments, and was affected by both seawater acidification and warming. Estimated nematode species diversity, species evenness, and the maturity index, were substantially lower at 16 °C, whereas trophic diversity was slightly higher at 16 °C except at pH 6.7. This study has demonstrated that the combination of elevated levels of CO2 and ocean warming may have substantial effects on structural and functional characteristics of meiofaunal and nematode communities, and that single stressor experiments are unlikely to encompass the complexity of abiotic and biotic interactions. At the same time, ecological interactions may lead to complex community responses to pH and temperature changes in the interstitial environment.
空间范围	Latitude: 50.602000 * Longitude: -4.221000
时间范围	2009-01-14T00:00:00 - 2009-01-14T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/216873
推荐引用方式 GB/T 7714	Meadows,A S,Ingels,et al. Effects of elevated CO2 and temperature on an intertidal meiobenthic community.2015-03-23.https://doi.org/10.1594/PANGAEA.859078.