气候变化领域集成服务门户(CCPortal): Mesozooplankton community development at elevated CO2

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.845541
	Mesozooplankton community development at elevated CO2
	Niehoff; Barbara; Schmithüsen; Tosia; Knüppel; Nadine; Daase; M; Czerny; Jan; Boxhammer; Tim
发布日期	2015-04-23
数据集类型	dataset
英文关键词	Biomass/Abundance/Elemental composition ; Coast and continental shelf ; Community composition and diversity ; Entire community ; Field experiment ; Mesocosm or benthocosm ; Pelagos ; Polar
英文简介	The increasing CO2 concentration in the atmosphere caused by burning fossil fuels leads to increasing pCO2 and decreasing pH in the world ocean. These changes may have severe consequences for marine biota, especially in cold-water ecosystems due to higher solubility of CO2. However, studies on the response of mesozooplankton communities to elevated CO2 are still lacking. In order to test whether abundance and taxonomic composition change with pCO2, we have sampled nine mesocosms, which were deployed in Kongsfjorden, an Arctic fjord at Svalbard, and were adjusted to eight CO2 concentrations, initially ranging from 185 µatm to 1420 µatm. Vertical net hauls were taken weekly over about one month with an Apstein net (55 µm mesh size) in all mesocosms and the surrounding fjord. In addition, sediment trap samples, taken every second day in the mesocosms, were analysed to account for losses due to vertical migration and mortality. The taxonomic analysis revealed that meroplanktonic larvae (Cirripedia, Polychaeta, Bivalvia, Gastropoda, and Decapoda) dominated in the mesocosms while copepods (Calanus spp., Oithona similis, Acartia longiremis and Microsetella norvegica) were found in lower abundances. In the fjord copepods prevailed for most of our study. With time, abundance and taxonomic composition developed similarly in all mesocosms and the pCO2 had no significant effect on the overall community structure. Also, we did not find significant relationships between the pCO2 level and the abundance of single taxa. Changes in heterogeneous communities are, however, difficult to detect, and the exposure to elevated pCO2 was relatively short. We therefore suggest that future mesocosm experiments should be run for longer periods.
空间范围	Latitude: 79.005000 * Longitude: 11.669000
时间范围	2010-06-05T00:00:00 - 2010-07-07T00:00:00
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/217122
推荐引用方式 GB/T 7714	Niehoff,Barbara,Schmithüsen,et al. Mesozooplankton community development at elevated CO2.2015-04-23.https://doi.org/10.1594/PANGAEA.845541.