气候变化领域集成服务门户(CCPortal): Seawater carbonate chemistry and mortality and behavior of the Antarctic amphipod Gondogeneia antarctica

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.914371
	Seawater carbonate chemistry and mortality and behavior of the Antarctic amphipod Gondogeneia antarctica
	Park; Seojeong; Ahn; In-Young; Sin; Eunchong; Shim; JeongHee; Kim; T-W
发布日期	2020-04-03
数据集类型	dataset
英文关键词	Animalia ; Antarctic ; Arthropoda ; Behaviour ; Bottles or small containers/Aquaria ( 20 L) ; Coast and continental shelf ; Gondogeneia antarctica ; Laboratory experiment ; Mortality/Survival ; Pelagos ; Polar ; Salinity ; Single species ; Zooplankton
英文简介	The Western Antarctic Peninsula (WAP) has experienced rapid atmospheric and ocean warming over the past few decades and many marine-terminating glaciers have considerably retreated. Glacial retreat is accompanied by fresh meltwater intrusion, which may result in the freshening and acidification of coastal waters. Marian Cove (MC), on King George Island in the WAP, undergoes one of the highest rates of glacial retreat. Intertidal and shallow subtidal waters are likely more susceptible to these processes, and sensitive biological responses are expected from the organisms inhabiting this area. The gammarid amphipod Gondogeneia antarctica is one of the most abundant species in the shallow, nearshore Antarctic waters, and it occupies an essential ecological niche in the coastal marine WAP ecosystem. In this study, we tested the sensitivity of G. antarctica to lowered salinity and pH by meltwater intrusion following glacial retreat. We exposed G. antarctica to four different treatments combining two salinities (34 and 27 psμ) and pH (8.0 and 7.6) levels for 26 days. Mortality, excluding cannibalized individuals, increased under low pH but decreased under low salinity conditions. Meanwhile, low salinity increased cannibalism, whereas low pH reduced food detection. Shelter use during the daytime decreased under each low salinity and pH condition, indicating that the two stressors act as disruptors of amphipod behavior. Under low salinity conditions, swimming increased during the daytime but decreased at night. Although interactions between low salinity and low pH were not observed during the experiment, the results suggest that each stressor, likely induced by glacial melting, causes altered behaviors in amphipods. These environmental factors may threaten population persistence in Marian Cove and possibly other similar glacial embayments.
空间范围	Latitude: -62.220000 * Longitude: -58.790000
时间范围	2018-01-17T00:00:00 - 2018-02-11T00:00:00
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/215602
推荐引用方式 GB/T 7714	Park,Seojeong,Ahn,et al. Seawater carbonate chemistry and mortality and behavior of the Antarctic amphipod Gondogeneia antarctica.2020-04-03.https://doi.org/10.1594/PANGAEA.914371.