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		<citationkey>ArrautSilAffRenNov:2012:LaDyCl</citationkey>
		<title>The Amazon floodplain ecosystem: large-scale dynamics, climate change impacts and implications for biodiversity</title>
		<year>2012</year>
		<secondarytype>PRE CI</secondarytype>
		<author>Arraut, E. M.,</author>
		<author>Silva, T. S. F. S.,</author>
		<author>Affonso, A. A.,</author>
		<author>Reno, V. F. R.,</author>
		<author>Novo, E. M. L. M.,</author>
		<group>CST-CST-SPG-INPE-MCTI-GOV-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>eduardo.arraut@inpe.br</electronicmailaddress>
		<e-mailaddress>marcelo.pazos@inpe.br</e-mailaddress>
		<conferencename>Planet Under Pressure Conference, (PUP).</conferencename>
		<conferencelocation>Londres</conferencelocation>
		<date>26-29 Mar. 2012</date>
		<booktitle>Abstracts</booktitle>
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		<keywords>Amazon floodplain, climate change impacts, biodiversity.</keywords>
		<abstract>The Amazon floodplain ecosystem links large-scale climatic phenomena to the lives of animals (including people), plants, and other organisms that live within it. The floodplain is subject to seasonal changes in water level that can reach up to 16m, as it aggregates rainfall inputs from the entire Amazon basin. The amount and distribution of such rain is related to annual variations in the Tropical Atlantic and Pacific Oceans sea surface temperatures. On the other hand, the assemblies of species that are found within the floodplain depend to a large extent on flooding dynamics. Moreover, floodplains of the major rivers are home to over 70% of the human population living in the Amazon. Within them people fish, raise cattle, grow crops, transport goods, and have leisure. People depend on its biodiversity, though several species have already had their populations drastically depleted due to over-hunting and over-fishing. To contribute to the understanding of how the predicted increases in the frequency of droughts and other extreme climatic events in the Amazon will impact the floodplains present biodiversity, and its biogeochemistry, it is thus necessary to understand the dynamics of the floodplain ecosystem. Here, we begin such investigation from a large-scale perspective. We consider the land cover characteristics of the floodplain (woody vegetation, annual herbaceous vegetation, and open water), and how its spatial and temporal dynamics are related to the flood cycle. We use multi-scale analysis of remote sensing datasets, geographical information systems, hydrograph analyses, fieldwork and several analytical techniques. Preliminary results show that cover types with faster dynamics, such as macrophyte assemblies, respond quickly to extreme droughts. Impacts on these habitats might be carried over to other components of the system, thus influencing carbon fixation and transformation, animal migration patterns, and fish abundance and availability.</abstract>
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