气候变化领域集成服务门户(CCPortal): Heat waves and their significance for a temperate benthic community: a near-natural experimental approach

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.888578
	Heat waves and their significance for a temperate benthic community: a near-natural experimental approach
	Pansch; Christian; Scotti; Marco; Barboza; Francisco R; Al-Janabi; Balsam; Brakel; Janina; Briski; Elizabeta; Buchholz; Björn; Franz; Markus; Ito; Maysa; Paiva; Filipa; Saha; Mahasweta; Sawall; Yvonne; Weinberger; Florian; Wahl; Martin
发布日期	2018-04-17
数据集类型	dataset
英文简介	Climate change will not only shift environmental means but will also increase the intensity of extreme events, exerting additional stress on ecosystems. While field observations on the ecological consequences of heat waves are emerging, experimental evidence is rare, and lacking at the community level. Using a novel “near‐natural” outdoor mesocosms approach, this study tested whether marine summer heat waves have detrimental consequences for macrofauna of a temperate coastal community, and whether sequential heat waves provoke an increase or decrease of sensitivity to thermal stress. Three treatments were applied, defined and characterized through a statistical analysis of 15 years of temperature records from the experimental site: (1) no heat wave, (2) two heat waves in June and July followed by a summer heat wave in August and (3) the summer heat wave only. Overall, 50% of the species showed positive, negative or positive/negative responses in either abundance and/or biomass. We highlight four possible ways in which single species responded to either three subsequent heat waves or one summer heat wave: (1) absence of a response (tolerance, 50% of species), (2) negative accumulative effects by three subsequent heat waves (tellinid bivalve), (3) buffering by proceeding heat waves due to acclimation and/or shifts in phenology (spionid polychaete) and (4) an accumulative positive effect by subsequent heat waves (amphipod). The differential responses to single or sequential heat waves at the species level entailed shifts at the community level. Community‐level differences between single and triple heat waves were more pronounced than those between regimes with vs. without heat waves. Detritivory was reduced by the single heat wave while suspension feeding was less common in the triple heat wave regime. Critical extreme events occur already today and will occur more frequently in a changing climate, thus, leading to detrimental impacts on coastal marine systems.
空间范围	Median Latitude: 54.329859 * Median Longitude: 10.149901 * South-bound Latitude: 54.329436 * West-bound Longitude: 10.149606 * North-bound Latitude: 54.330000 * East-bound Longitude: 10.150000
时间范围	2000-01-01T00:00:00 - 2015-08-31T22:00:00
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/215246
推荐引用方式 GB/T 7714	Pansch,Christian,Scotti,et al. Heat waves and their significance for a temperate benthic community: a near-natural experimental approach.2018-04-17.https://doi.org/10.1594/PANGAEA.888578.