Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.04.016 |
Tree mortality of a flood-adapted species in response of hydrographic changes caused by an Amazonian river dam | |
Assahira, Cyro1,2; Fernandez Piedade, Maria Teresa1; Trumbore, Susan E.3; Wittmann, Florian4,6; Ladvocat Cintra, Bruno Barcante1,7; Batista, Eliane Silva1,5; de Resende, Angelica Faria1,2; Schongart, Jochen1 | |
2017-07-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 396 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; Germany; England |
英文摘要 | The annual and regular flood pulse is the main hydrologic feature found in the large floodplains along Amazonian rivers triggering nutrient cycles, growth rhythms and life cycles of the biota as well as primary and secondary productivity. The construction of hydroelectric dams in the Amazon basin substantially alters the hydrologic regime resulting in severe social, ecological and environmental impacts. While the majority of studies evaluate these impacts in the area of the reservoir and the surroundings of the dam, we focus on disturbances in floodplain forests downstream of the hydroelectric power plant, in this case the Balbina dam, constructed in the 1980s damming the Uatuma River (Central Amazonia). The lowest topographies in the floodplain forests downstream of the dam are dominated by dead trees of Macrolobium acaciifolium (Benth.) Benth. (Fabaceae), a flood-tolerant species forming annual tree rings in consequence of the flood pulse. In this study we evidence alterations in the magnitude and frequency of the hydrologic conditions of the Uatuma River downstream of the hydroelectric power plant comparing the pre-dam (1973-1982) and post-dam (1991-2012) period analyzing a set of biologically relevant hydrologic indicators. To investigate the relationship between the hydrologic changes caused by the dam and the year of death of individuals of M. acaciifolium we use cross-dating techniques (dendrochronology) and radiocarbon dating (C-14) as two independent methods. Cross sections of 17 dead individuals were analyzed and individual tree-ring series cross-dated with a well-replicated living trees' chronology of the same species and region (1804-2012). The outermost tree ring was isolated to perform radiocarbon dating. The dendrochronological and C-14 proxies matched in 88% of the cases, while in the 12% mismatched maximum deviation at least one year. Trees died during periods of consecutive years of inundation, up to two decades after the implementation of the hydroelectric dam. Considering the planning of construction of several dozen dams in the Amazon region there is a critical need to include the downstream impacts in all discussions of hydroelectric implementation. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Uatuma River Monomodal flood pulse Balbina hydroelectric dam Macrolobium acaciifolium Dendrochronology Radiocarbon dating |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402217100011 |
WOS关键词 | GREENHOUSE-GAS EMISSIONS ; NINO-SOUTHERN-OSCILLATION ; HYDROELECTRIC DEVELOPMENT ; GROWTH RINGS ; BLACK-WATER ; RADIOCARBON ; FORESTS ; HYDROPOWER ; ECOSYSTEMS ; IMPACTS |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
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/23759 |
专题 | 气候变化 |
作者单位 | 1.Natl Inst Amazonian Res INPA, Coordinat Environm Studies CDAM, Av Andre Araujo 2936, BR-69060001 Manaus, Amazonas, Brazil; 2.Natl Inst Amazonian Res INPA, Postgrad Program Bot, Av Andre Araujo 2936, BR-69060001 Manaus, Amazonas, Brazil; 3.Max Planck Inst Biogeochem, Biogeochem Proc, Hans Knoll Str 10, D-07745 Jena, Germany; 4.Max Planck Inst Chem, Biogeochem Dept, Hahn Meitner Weg 1, D-55128 Mainz, Germany; 5.State Univ Amazonas UEA, Natl Inst Amazonian Res INPA, Postgrad Program Climate & Environm, Av Andre Araujo 2936, BR-69060001 Manaus, Amazonas, Brazil; 6.Inst Geog & Geoecol, Dept Wetland Ecol, Josefstr 1, Rastatt, Germany; 7.Univ Leeds, Sch Geog, Woodhouse Lane, Leeds LS2 9JT, W Yorkshire, England |
推荐引用方式 GB/T 7714 | Assahira, Cyro,Fernandez Piedade, Maria Teresa,Trumbore, Susan E.,et al. Tree mortality of a flood-adapted species in response of hydrographic changes caused by an Amazonian river dam[J]. FOREST ECOLOGY AND MANAGEMENT,2017,396. |
APA | Assahira, Cyro.,Fernandez Piedade, Maria Teresa.,Trumbore, Susan E..,Wittmann, Florian.,Ladvocat Cintra, Bruno Barcante.,...&Schongart, Jochen.(2017).Tree mortality of a flood-adapted species in response of hydrographic changes caused by an Amazonian river dam.FOREST ECOLOGY AND MANAGEMENT,396. |
MLA | Assahira, Cyro,et al."Tree mortality of a flood-adapted species in response of hydrographic changes caused by an Amazonian river dam".FOREST ECOLOGY AND MANAGEMENT 396(2017). |
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