MODIS imagery were used to investigate duckweed blooms and other floating vegetation in Lake" />

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Title of Journal: Water Resour Manage

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Abbravation: Water Resources Management

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Springer Netherlands

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DOI

10.1002/pat.690

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ISSN

1573-1650

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Using NDVI from MODIS to Monitor Duckweed Bloom in

Authors: Lawrence M Kiage Nan D Walker
Publish Date: 2008/08/01
Volume: 23, Issue: 6, Pages: 1125-1135
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Abstract

Four summer timeseries 2003–2006 of Normalized Difference Vegetation Index NDVI derived from MODIS imagery were used to investigate duckweed blooms and other floating vegetation in Lake Maracaibo Venezuela Preliminary findings revealed the presence of duckweed and floating vegetation in the Lake during summer in varying amounts 0–11 that appeared to be related to satellitederived rainfall anomalies from the Special Sensor Microwave/Imager SMM/I during the previous month The first appearance of duckweed in abundance in 2004 and its reappearance at similar levels in 2006 may indicate a response to increasing nutrient loading in the lake The duckweed rafts may be an environmental warning of imminent ecological disaster that needs to be mitigated MODIS data with its daily repeat cycle and 250 m pixels showed great potential for monitoring floating vegetation in the lake

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