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Remote Sens. 2016, 8(6), 512; doi:10.3390/rs8060512

Mangroves at Their Limits: Detection and Area Estimation of Mangroves along the Sahara Desert Coast

1
Laboratory of Systems Ecology and Resource Management, Faculté des Sciences, Université Libre de Bruxelles (ULB), Avenue F.D. Roosevelt 50, CPI 264/1, B-1050 Brussels, Belgium
2
Laboratory of Plant Biology and Nature Management, Ecology and Biodiversity, Faculty of Science and Bio-Engineering Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, VUB-APNA-WE, B-1050 Brussels, Belgium
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editors: Deepak R. Mishra, Richard W. Gould and Prasad S. Thenkabail
Received: 31 March 2016 / Revised: 27 May 2016 / Accepted: 14 June 2016 / Published: 18 June 2016
(This article belongs to the Special Issue Remote Sensing in Coastal Environments)
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Abstract

The northernmost and most arid mangrove ecosystem of West Africa is found in Mauritania, in the Parc National du Banc d’Arguin (PNBA). The existing global and regional maps of Mauritania’s mangroves have little detail, and available estimates of the mangrove area differ among studies. We assessed the use of automated Remote Sensing classification techniques to calculate the extent and map the distribution of the mangrove patches located at Cap Timiris, PNBA, using QuickBird and GeoEye imagery. It was possible to detect the northernmost contiguous mangrove patches of West Africa with an accuracy of 87% ± 2% using the Maximum Likelihood algorithm. The main source of error was the low spectral difference between mangroves and other types of terrestrial vegetation, which resulted in an erroneous classification between these two types of land cover. The most reliable estimate for the mangrove area obtained in this study was 19.48 ± 5.54 ha in 2011. Moreover, we present a special validation procedure that enables a detailed and reliable validation of the land cover maps. View Full-Text
Keywords: mangroves; arid ecosystems; latitudinal limits; remote sensing; area estimation; Cap Timiris; Mauritania mangroves; arid ecosystems; latitudinal limits; remote sensing; area estimation; Cap Timiris; Mauritania
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Otero, V.; Quisthoudt, K.; Koedam, N.; Dahdouh-Guebas, F. Mangroves at Their Limits: Detection and Area Estimation of Mangroves along the Sahara Desert Coast. Remote Sens. 2016, 8, 512.

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