Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13950 |
Ecosystem state shifts during long-term development of an Amazonian peatland | |
Swindles, Graeme T.1; Morris, Paul J.1; Whitney, Bronwen2; Galloway, Jennifer M.3,4; Galka, Mariusz5; Gallego-Sala, Angela6; Macumber, Andrew L.7; Mullan, Donal7; Smith, Mark W.1; Amesbury, Matthew J.6; Roland, Thomas P.6; Sanei, Hamed3,4; Patterson, R. Timothy8,9; Sanderson, Nicole6; Parry, Lauren10; Charman, Dan J.6; Lopez, Omar11,12; Valderamma, Elvis13; Watson, Elizabeth J.1; Ivanovic, Ruza F.14; Valdes, Paul J.15; Turner, T. Edward1; Lahteenoja, Outi16 | |
2018-02-01 | |
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:2页码:738-757 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Canada; Poland; North Ireland; Scotland; Panama; Peru; USA |
英文摘要 | The most carbon (C)-dense ecosystems of Amazonia are areas characterized by the presence of peatlands. However, Amazonian peatland ecosystems are poorly understood and are threatened by human activities. Here, we present an investigation into long-term ecohydrological controls on C accumulation in an Amazonian peat dome. This site is the oldest peatland yet discovered in Amazonia (peat initiation ca. 8.9 ka BP), and developed in three stages: (i) peat initiated in an abandoned river channel with open water and aquatic plants; (ii) inundated forest swamp; and (iii) raised peat dome (since ca. 3.9ka BP). Local burning occurred at least three times in the past 4,500 years. Two phases of particularly rapid C accumulation (ca. 6.6-6.1 and ca. 4.9-3.9 ka BP), potentially resulting from increased net primary productivity, were seemingly driven by drier conditions associated with widespread drought events. The association of drought phases with major ecosystem state shifts (open water wetland-forest swamp-peat dome) suggests a potential climatic control on the developmental trajectory of this tropical peatland. A third drought phase centred on ca. 1.8-1.1 ka BP led to markedly reduced C accumulation and potentially a hiatus during the peat dome stage. Our results suggest that future droughts may lead to phases of rapid C accumulation in some inundated tropical peat swamps, although this can lead ultimately to a shift to ombrotrophy and a subsequent return to slower C accumulation. Conversely, in ombrotrophic peat domes, droughts may lead to reduced C accumulation or even net loss of peat. Increased surface wetness at our site in recent decades may reflect a shift towards a wetter climate in western Amazonia. Amazonian peatlands represent important carbon stores and habitats, and are important archives of past climatic and ecological information. They should form key foci for conservation efforts. |
英文关键词 | Amazon rainforest carbon accumulation climate Holocene palaeoecology peat Peru swamp tropical peatland |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423994700045 |
WOS关键词 | ROCK-EVAL PYROLYSIS ; HOLOCENE CLIMATE-CHANGE ; NORTH-ATLANTIC CLIMATE ; TROPICAL PEATLANDS ; ACCUMULATION RATES ; LAKE-SEDIMENTS ; CARBON ACCUMULATION ; PERUVIAN AMAZONIA ; TIBETAN PLATEAU ; SOUTHEAST-ASIA |
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/16843 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Leeds, Sch Geog, Leeds, W Yorkshire, England; 2.Northumbria Univ, Dept Geog & Environm Sci, Newcastle Upon Tyne, Tyne & Wear, England; 3.Commiss Geol Canada, Geol Survey Canada, Calgary, AB, Canada; 4.Univ Calgary, Dept Geosci, Calgary, AB, Canada; 5.Adam Mickiewicz Univ, Dept Biogeog & Palaeoecol, Poznan, Poland; 6.Univ Exeter, Coll Life & Environm Sci, Geog, Exeter, Devon, England; 7.Queens Univ Belfast, Sch Nat & Built Environm, Belfast, Antrim, North Ireland; 8.Carleton Univ, Ottawa Carleton Geosci Ctr, Ottawa, ON, Canada; 9.Carleton Univ, Dept Earth Sci, Ottawa, ON, Canada; 10.Univ Glasgow, Sch Interdisciplinary Studies, Glasgow, Lanark, Scotland; 11.Panama Inst Invest Cient & Serv Alta Tecnol, Panama City, Panama; 12.Smithsonian Trop Res Inst, Panama City, Panama; 13.Univ Nacl Amazonia Peruana, Fac Biol, Pevas 5Ta Cdra, Iquitos, Peru; 14.Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England; 15.Univ Bristol, Sch Geog Sci, Bristol, Avon, England; 16.Arizona State Univ, Sch Life Sci, Tempe, AZ USA |
推荐引用方式 GB/T 7714 | Swindles, Graeme T.,Morris, Paul J.,Whitney, Bronwen,et al. Ecosystem state shifts during long-term development of an Amazonian peatland[J]. GLOBAL CHANGE BIOLOGY,2018,24(2):738-757. |
APA | Swindles, Graeme T..,Morris, Paul J..,Whitney, Bronwen.,Galloway, Jennifer M..,Galka, Mariusz.,...&Lahteenoja, Outi.(2018).Ecosystem state shifts during long-term development of an Amazonian peatland.GLOBAL CHANGE BIOLOGY,24(2),738-757. |
MLA | Swindles, Graeme T.,et al."Ecosystem state shifts during long-term development of an Amazonian peatland".GLOBAL CHANGE BIOLOGY 24.2(2018):738-757. |
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