Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14448 |
Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river | |
Kendrick, Michael R.1; Huryn, Alexander D.1; Bowden, William B.2; Deegan, Linda A.3; Findlay, Robert H.1; Hershey, Anne E.4; Peterson, Bruce J.5; Benes, Joshua P.2; Schuett, Elissa B.2 | |
2018-12-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:12页码:5738-5750 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Rapidly, increasing air temperatures across the Arctic are thawing permafrost and exposing vast quantities of organic carbon, nitrogen, and phosphorus to microbial processing. Shifts in the absolute and relative supplies of these elements will likely alter patterns of ecosystem productivity and change the way carbon and nutrients are delivered from upland areas to surface waters such as rivers and lakes. The ultra-oligotrophic nature of surface waters across the Arctic renders these ecosystems particularly susceptible to changes in productivity and food web dynamics as permafrost thaw alters terrestrial-aquatic linkages. The objectives of this study were to evaluate decadal-scale patterns in surface water chemistry and assess potential implications of changing water chemistry to benthic organic matter and aquatic food webs. Data were collected from the upper Kuparuk River on the North Slope of Alaska by the U.S. National Science Foundation's Long-Term Ecological Research program during 1978-2014. Analyses of these data show increases in stream water alkalinity and cation concentrations consistent with signatures of permafrost thaw. Changes are also documented for discharge-corrected nitrate concentrations (+), discharge-corrected dissolved organic carbon concentrations (-), total phosphorus concentrations (-), and delta C-13 isotope values of aquatic invertebrate consumers (-). These changes show that warming temperatures and thawing permafrost in the upland environment are leading to shifts in the supply of carbon and nutrients available to surface waters and consequently changing resources that support aquatic food webs. This demonstrates that physical, geochemical, and biological changes associated with warming permafrost are fundamentally altering linkages between upland and aquatic ecosystems in rapidly changing arctic environments. |
英文关键词 | biogeochemistry carbon stable isotope climate change ecosystem |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000449650600013 |
WOS关键词 | UPPER KUPARUK RIVER ; NORTH SLOPE ; ORGANIC-MATTER ; CONTRASTING RESPONSES ; TUNDRA ECOSYSTEMS ; METHANE OXIDATION ; STABLE-ISOTOPES ; WATER VELOCITY ; CARBON BALANCE ; CLIMATE-CHANGE |
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/16790 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Alabama, Dept Biol Sci, Tuscaloosa, AL USA; 2.Univ Vermont, Rubenstein Sch Environm & Nat Resources, Burlington, VT USA; 3.Woods Hole Res Ctr, Falmouth, MA USA; 4.Univ N Carolina, Dept Biol, Greensboro, NC USA; 5.Marine Biol Lab, Ctr Ecosyst, Woods Hole, MA 02543 USA |
推荐引用方式 GB/T 7714 | Kendrick, Michael R.,Huryn, Alexander D.,Bowden, William B.,et al. Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river[J]. GLOBAL CHANGE BIOLOGY,2018,24(12):5738-5750. |
APA | Kendrick, Michael R..,Huryn, Alexander D..,Bowden, William B..,Deegan, Linda A..,Findlay, Robert H..,...&Schuett, Elissa B..(2018).Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river.GLOBAL CHANGE BIOLOGY,24(12),5738-5750. |
MLA | Kendrick, Michael R.,et al."Linking permafrost thaw to shifting biogeochemistry and food web resources in an arctic river".GLOBAL CHANGE BIOLOGY 24.12(2018):5738-5750. |
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