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		<citationkey>CurtarelliOgasStec:2015:SpTeVa</citationkey>
		<title>Spatial and temporal variations of trophic state in a tropical reservoir and its relation with land use land cover</title>
		<year>2015</year>
		<secondarytype>PRE CI</secondarytype>
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		<author>Curtarelli, Marcelo Pedroso,</author>
		<author>Ogashawara, Igor,</author>
		<author>Stech, José Luiz,</author>
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		<group>DSR-OBT-INPE-MCTI-GOV-BR</group>
		<group>DSR-OBT-INPE-MCTI-GOV-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>mpedroso.curtarelli@gmail.com</electronicmailaddress>
		<electronicmailaddress>igoroga@dsr.inpe.br</electronicmailaddress>
		<electronicmailaddress>stech@ltid.inpe.br</electronicmailaddress>
		<conferencename>Aslo 2015 Aquatic Sciences Meeting</conferencename>
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		<contenttype>External Contribution</contenttype>
		<abstract>The Land Use Land Cover (LULC) of reservoirs drainage areas can impact its water quality. Therefore the use of remote sensing techniques to evaluate de LULC associated with limnological data collection contributes to a better understanding of the spatial-temporal dynamics of water quality in these water bodies. This study aimed to evaluate the relation between the watershed LULC and the trophic state in the Funil reservoir, located in the Paraiba do Sul River Valley, one of the most industrialized regions of Brazil. The analyses were carried out using Landsat-5/TM images, limnological data collected at different seasons, and a geographic information system. A trophic state index (TSI) was calculated based on total phosphorous measurements. Preliminary results showed that from the temporal point of view, the reservoir has high TSI (i.e., lower water quality) during spring and winter months. From the spatial point of view, the reservoir showed low TSI (i.e., better water quality) in the region near the dam. The spatial and temporal dynamics of TSI in Funil reservoir is related to the LULC of its watershed, which is predominantly agricultural.</abstract>
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		<language>en</language>
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