Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13912 |
Increased resource use efficiency amplifies positive response of aquatic primary production to experimental warming | |
Hood, James M.1,2; Benstead, Jonathan P.3; Cross, Wyatt F.2; Huryn, Alexander D.3; Johnson, Philip W.4; Gislason, Gisli M.5; Junker, James R.2; Nelson, Daniel3; Olafsson, Jon S.6; Chau Tran3 | |
2018-03-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:3页码:1069-1084 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Iceland |
英文摘要 | Climate warming is affecting the structure and function of river ecosystems, including their role in transforming and transporting carbon (C), nitrogen (N), and phosphorus (P). Predicting how river ecosystems respond to warming has been hindered by a dearth of information about how otherwise well-studied physiological responses to temperature scale from organismal to ecosystem levels. We conducted an ecosystem-level temperature manipulation to quantify how coupling of stream ecosystem metabolism and nutrient uptake responded to a realistic warming scenario. A similar to 3.3 degrees C increase in mean water temperature altered coupling of C, N, and P fluxes in ways inconsistent with single-species laboratory experiments. Net primary production tripled during the year of experimental warming, while whole-stream N and P uptake rates did not change, resulting in 289% and 281% increases in autotrophic dissolved inorganic N and P use efficiency (UE), respectively. Increased ecosystem production was a product of unexpectedly large increases in mass-specific net primary production and autotroph biomass, supported by (i) combined increases in resource availability (via N mineralization and N-2 fixation) and (ii) elevated resource use efficiency, the latter associated with changes in community structure. These large changes in C and nutrient cycling could not have been predicted from the physiological effects of temperature alone. Our experiment provides clear ecosystem-level evidence that warming can shift the balance between C and nutrient cycling in rivers, demonstrating that warming will alter the important role of in-stream processes in C, N, and P transformations. Moreover, our results reveal a key role for nutrient supply and use efficiency in mediating responses of primary producers to climate warming. |
英文关键词 | climate change ecosystem respiration gross primary production headwater streams nutrient cycling nutrient use efficiency stream metabolism temperature |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425396700018 |
WOS关键词 | WHOLE-STREAM METABOLISM ; OXYGEN CHANGE TECHNIQUE ; GLOBAL CARBON-CYCLE ; TEMPERATURE-DEPENDENCE ; FRESH-WATER ; ECOLOGICAL STOICHIOMETRY ; ECOSYSTEM METABOLISM ; CLIMATE-CHANGE ; PRIMARY PRODUCERS ; NITROGEN UPTAKE |
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/16842 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Ohio State Univ, Dept Evolut Ecol & Organismal Biol, Aquat Ecol Lab, Columbus, OH 43210 USA; 2.Montana State Univ, Dept Ecol, Bozeman, MT 59717 USA; 3.Univ Alabama, Dept Biol Sci, Tuscaloosa, AL USA; 4.Univ Alabama, Dept Civil Construct & Environm Engn, Tuscaloosa, AL USA; 5.Univ Iceland, Inst Life & Environm Sci, Reykjavik, Iceland; 6.Marine & Freshwater Res Inst, Reykjavik, Iceland |
推荐引用方式 GB/T 7714 | Hood, James M.,Benstead, Jonathan P.,Cross, Wyatt F.,et al. Increased resource use efficiency amplifies positive response of aquatic primary production to experimental warming[J]. GLOBAL CHANGE BIOLOGY,2018,24(3):1069-1084. |
APA | Hood, James M..,Benstead, Jonathan P..,Cross, Wyatt F..,Huryn, Alexander D..,Johnson, Philip W..,...&Chau Tran.(2018).Increased resource use efficiency amplifies positive response of aquatic primary production to experimental warming.GLOBAL CHANGE BIOLOGY,24(3),1069-1084. |
MLA | Hood, James M.,et al."Increased resource use efficiency amplifies positive response of aquatic primary production to experimental warming".GLOBAL CHANGE BIOLOGY 24.3(2018):1069-1084. |
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