globalchange  > 气候减缓与适应
DOI: 10.1002/lno.11041
WOS记录号: WOS:000456164100019
论文题名:
Environmental controls on pteropod biogeography along the Western Antarctic Peninsula
作者: Thibodeau, P. S.1; Steinberg, D. K.1; Stammerjohn, S. E.2; Hauri, C.3
通讯作者: Thibodeau, P. S.
刊名: LIMNOLOGY AND OCEANOGRAPHY
ISSN: 0024-3590
EISSN: 1939-5590
出版年: 2019
卷: 64, 页码:S240-S256
语种: 英语
WOS关键词: OCEAN ACIDIFICATION ; CLIMATE-CHANGE ; ROSS SEA ; GYMNOSOMATOUS PTEROPODS ; GRAZING IMPACT ; MCMURDO SOUND ; TIME-SERIES ; ZONE WEST ; ZOOPLANKTON ; MACROZOOPLANKTON
WOS学科分类: Limnology ; Oceanography
WOS研究方向: Marine & Freshwater Biology ; Oceanography
英文摘要:

Pteropods are abundant zooplankton in the Western Antarctic Peninsula (WAP) and important grazers of phytoplankton and prey for higher trophic levels. We analyzed long-term (1993-2017) trends in summer (January-February) abundance of WAP pteropods in relation to environmental controls (sea ice, sea surface temperature, climate indices, phytoplankton biomass and productivity, and carbonate chemistry) and interspecies dynamics using general linear models. There was no overall directional trend in abundance of thecosomes, Limacina helicina antarctica and Clio pyramidata, throughout the entire WAP, although L. antarctica abundance increased in the slope region and C. pyramidata abundance increased in the South. High L. antarctica abundance was strongly tied to a negative Multivariate El Nino Southern Oscillation Index the previous year. C. pyramidata abundance was best explained by early sea ice retreat 1-yr prior. Abundance of the gymnosome species, Clione antarctica and Spongiobranchaea australis, increased over the time series, particularly in the slope region. Gymnosome abundance was positively influenced by abundance of their prey, L. antarctica, during the same season, and late sea ice advance 2-yr prior. These trends indicate a shorter ice season promotes longer periods of open water in spring/summer favoring all pteropod species. Weak relationships were found between pteropod abundance and carbonate chemistry, and no long-term trend in carbonate parameters was detected. These factors indicate ocean acidification is not presently influencing WAP pteropod abundance. Pteropods are responsive to the considerable environmental variability on both temporal and spatial scales-key for predicting future effects of climate change on regional carbon cycling and plankton trophic interactions.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/127093
Appears in Collections:气候减缓与适应

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作者单位: 1.Coll William & Mary, Virginia Inst Marine Sci, Gloucester Point, VA 23062 USA
2.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA
3.Univ Alaska Fairbanks, Int Arctic Res Ctr, Fairbanks, AK USA

Recommended Citation:
Thibodeau, P. S.,Steinberg, D. K.,Stammerjohn, S. E.,et al. Environmental controls on pteropod biogeography along the Western Antarctic Peninsula[J]. LIMNOLOGY AND OCEANOGRAPHY,2019-01-01,64:S240-S256
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