Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14278 |
Warming intensify CO2 flux and nutrient release from algal wrack subsidies on sandy beaches | |
Lastra, Mariano1,2; Lopez, Jesus1,2; Rodil, Ivan F.3,4 | |
2018-08-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:8页码:3766-3779 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; Finland; Sweden |
英文摘要 | Algal wrack subsidies underpin most of the food web structure of exposed sandy beaches and are responsible of important biogeochemical processes that link marine and terrestrial ecosystems. The response in decomposition of algal wrack deposits to global warming has not been studied in ocean-exposed sandy beaches to date. With this aim, passive open top chambers (OTCs) were used to increase soil temperature within the range predicted by the IPCC for western Europe (between 0.5 and 1.5 degrees C), following the hypothesis that the biogeochemical processing of macroalgal wrack subsidies would accelerate in response to temperature increase. The effect of temperature manipulation on three target substrates: fresh and aged macroalgae, and bare sand, was tested. Results indicated that a small warming (< 0.5 degrees C) affected the wrack decomposition process through traceable increases in soil respiration through CO2 flux, inorganic nutrients within the interstitial environment (N and P), sediment organic contents measured through the amount of proteins and microbial pool through the total soil DNA. The different responses of soil variables in the studied substrates indicated that the decomposition stage of stranded macroalgae influences the biogeochemical processing of organic matter in sandy beaches. Thus, CO2 fluxes, releases of organic and inorganic nutrients and microbial activity intensify in aged wrack deposits. Our results predict that expected global warming will increase the release of inorganic nutrients to the coastal ocean by 30% for the N (21 Gg/year) and 5.9% for P (14 Gg/year); that increase for the flow of C to the atmosphere as CO2 was estimated in 8.2% (523 Gg/year). This study confirms the key role of sandy beaches in recycling ocean-derived organic matter, highlighting their sensitivity to a changing scenario of global warming that predicts significant increases in temperature over the next few decades. |
英文关键词 | CO2 DNA global warming nutrients open top chambers organic enrichment wrack decay |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437284700039 |
WOS关键词 | NITRATE REDUCTASE-ACTIVITY ; EASTERN ENGLISH-CHANNEL ; OPEN-TOP CHAMBERS ; SOIL RESPIRATION ; MICROBIAL COMMUNITIES ; TEMPERATURE RESPONSE ; DETACHED MACROPHYTES ; INTERTIDAL SEDIMENTS ; OCEAN ACIDIFICATION ; SOUTHERN CALIFORNIA |
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/17042 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Vigo, Marine Sci Fac, Dept Ecol & Anim Biol, Vigo, Spain; 2.Univ Vigo, Toralla Marine Sci Stn ECIMAT, Vigo, Spain; 3.Univ Helsinki, Tvarminne Zool Stn, Hango, Finland; 4.Stockholm Univ, Baltic Sea Ctr, Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Lastra, Mariano,Lopez, Jesus,Rodil, Ivan F.. Warming intensify CO2 flux and nutrient release from algal wrack subsidies on sandy beaches[J]. GLOBAL CHANGE BIOLOGY,2018,24(8):3766-3779. |
APA | Lastra, Mariano,Lopez, Jesus,&Rodil, Ivan F..(2018).Warming intensify CO2 flux and nutrient release from algal wrack subsidies on sandy beaches.GLOBAL CHANGE BIOLOGY,24(8),3766-3779. |
MLA | Lastra, Mariano,et al."Warming intensify CO2 flux and nutrient release from algal wrack subsidies on sandy beaches".GLOBAL CHANGE BIOLOGY 24.8(2018):3766-3779. |
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