Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14161 |
Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula | |
Bowman, Jeff S.1; Kavanaugh, Maria T.2; Doney, Scott C.3; Ducklow, Hugh W.4 | |
2018-07-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:7页码:3065-3078 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The western Antarctic Peninsula (WAP) is a bellwether of global climate change and natural laboratory for identifying interactions between climate and ecosystems. The Palmer Long-Term Ecological Research (LTER) project has collected data on key ecological and environmental processes along the WAP since 1993. To better understand how key ecological parameters are changing across space and time, we developed a novel seascape classification approach based on insitu temperature, salinity, chlorophyll a, nitrate+nitrite, phosphate, and silicate. We anticipate that this approach will be broadly applicable to other geographical areas. Through the application of self-organizing maps (SOMs), we identified eight recurrent seascape units (SUs) in these data. These SUs have strong fidelity to known regional water masses but with an additional layer of biogeochemical detail, allowing us to identify multiple distinct nutrient profiles in several water masses. To identify the temporal and spatial distribution of these SUs, we mapped them across the Palmer LTER sampling grid via objective mapping of the original parameters. Analysis of the abundance and distribution of SUs since 1993 suggests two year types characterized by the partitioning of chlorophyll a into SUs with different spatial characteristics. By developing generalized linear models for correlated, time-lagged external drivers, we conclude that early spring sea ice conditions exert a strong influence on the distribution of chlorophyll a and nutrients along the WAP, but not necessarily the total chlorophyll a inventory. Because the distribution and density of phytoplankton biomass can have an impact on biomass transfer to the upper trophic levels, these results highlight anticipated links between the WAP marine ecosystem and climate. |
英文关键词 | Antarctic marine ecosystems nutrients Palmer Long-Term Ecological Research seascapes |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437281500027 |
WOS关键词 | CIRCUMPOLAR DEEP-WATER ; SEA-ICE ; BELLINGSHAUSEN SEA ; CONTINENTAL-SHELF ; MIXED-LAYER ; VARIABILITY ; ECOSYSTEM ; DIATOMS ; RATIO ; ZONE |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/18253 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Scripps Inst Oceanog, La Jolla, CA 92037 USA; 2.Oregon State Univ, Corvallis, OR 97331 USA; 3.Univ Virginia, Charlottesville, VA USA; 4.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA |
推荐引用方式 GB/T 7714 | Bowman, Jeff S.,Kavanaugh, Maria T.,Doney, Scott C.,et al. Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula[J]. GLOBAL CHANGE BIOLOGY,2018,24(7):3065-3078. |
APA | Bowman, Jeff S.,Kavanaugh, Maria T.,Doney, Scott C.,&Ducklow, Hugh W..(2018).Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula.GLOBAL CHANGE BIOLOGY,24(7),3065-3078. |
MLA | Bowman, Jeff S.,et al."Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula".GLOBAL CHANGE BIOLOGY 24.7(2018):3065-3078. |
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