Cargando…

The effect of anthropogenic drivers on spatial patterns of mangrove land use on the Amazon coast

Mangroves play an essential ecological role in the maintenance of the coastal zone and are extremely important for the socioeconomics of coastal communities. However, mangrove ecosystems are impacted by a range of anthropogenic pressures, and the loss of this habitat can be attributed primarily to t...

Descripción completa

Detalles Bibliográficos
Autores principales: Hayashi, Sanae N., Souza-Filho, Pedro Walfir M., Nascimento, Wilson R., Fernandes, Marcus E. B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6594664/
https://www.ncbi.nlm.nih.gov/pubmed/31242200
http://dx.doi.org/10.1371/journal.pone.0217754
_version_ 1783430276359127040
author Hayashi, Sanae N.
Souza-Filho, Pedro Walfir M.
Nascimento, Wilson R.
Fernandes, Marcus E. B.
author_facet Hayashi, Sanae N.
Souza-Filho, Pedro Walfir M.
Nascimento, Wilson R.
Fernandes, Marcus E. B.
author_sort Hayashi, Sanae N.
collection PubMed
description Mangroves play an essential ecological role in the maintenance of the coastal zone and are extremely important for the socioeconomics of coastal communities. However, mangrove ecosystems are impacted by a range of anthropogenic pressures, and the loss of this habitat can be attributed primarily to the human occupation of the coastal zone. In the present study, we analyzed the spatial patterns of land use in the mangrove of the Brazilian Amazon coast, and evaluated the anthropogenic drivers of this impact, using a remote sensing approach. We mapped the road network using RapidEye images, and human settlements using global data. The results of these analyses indicate that the Brazilian Amazon coast has a low population density and low rates of anthropogenic impact in most of the coastal microregions investigated, factors that contribute to the maintenance and conservation of the region’s mangrove. The study also revealed that the paved road network is one of the principal drivers of land use in the mangrove, whereas other factors, such as population density, urban centers, and the number of settlements are much less important. While the region has 2024 km of paved highways, unpaved roads (17,496 km) facilitate access to the mangrove, with approximately 90% of anthropogenic impact being recorded within a 3 km radius of these roads. While the network of paved highways is relatively reduced in extension, preventive measures are urgently required to impede any major shift in the current scenario, caused by the expansion of major development programs. The results of the study indicate that biophysical, economic, and political factors may also contribute to the reduction, stability, and development of one of the world’s largest areas of mangrove forest.
format Online
Article
Text
id pubmed-6594664
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Public Library of Science
record_format MEDLINE/PubMed
spelling pubmed-65946642019-07-05 The effect of anthropogenic drivers on spatial patterns of mangrove land use on the Amazon coast Hayashi, Sanae N. Souza-Filho, Pedro Walfir M. Nascimento, Wilson R. Fernandes, Marcus E. B. PLoS One Research Article Mangroves play an essential ecological role in the maintenance of the coastal zone and are extremely important for the socioeconomics of coastal communities. However, mangrove ecosystems are impacted by a range of anthropogenic pressures, and the loss of this habitat can be attributed primarily to the human occupation of the coastal zone. In the present study, we analyzed the spatial patterns of land use in the mangrove of the Brazilian Amazon coast, and evaluated the anthropogenic drivers of this impact, using a remote sensing approach. We mapped the road network using RapidEye images, and human settlements using global data. The results of these analyses indicate that the Brazilian Amazon coast has a low population density and low rates of anthropogenic impact in most of the coastal microregions investigated, factors that contribute to the maintenance and conservation of the region’s mangrove. The study also revealed that the paved road network is one of the principal drivers of land use in the mangrove, whereas other factors, such as population density, urban centers, and the number of settlements are much less important. While the region has 2024 km of paved highways, unpaved roads (17,496 km) facilitate access to the mangrove, with approximately 90% of anthropogenic impact being recorded within a 3 km radius of these roads. While the network of paved highways is relatively reduced in extension, preventive measures are urgently required to impede any major shift in the current scenario, caused by the expansion of major development programs. The results of the study indicate that biophysical, economic, and political factors may also contribute to the reduction, stability, and development of one of the world’s largest areas of mangrove forest. Public Library of Science 2019-06-26 /pmc/articles/PMC6594664/ /pubmed/31242200 http://dx.doi.org/10.1371/journal.pone.0217754 Text en © 2019 Hayashi et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Hayashi, Sanae N.
Souza-Filho, Pedro Walfir M.
Nascimento, Wilson R.
Fernandes, Marcus E. B.
The effect of anthropogenic drivers on spatial patterns of mangrove land use on the Amazon coast
title The effect of anthropogenic drivers on spatial patterns of mangrove land use on the Amazon coast
title_full The effect of anthropogenic drivers on spatial patterns of mangrove land use on the Amazon coast
title_fullStr The effect of anthropogenic drivers on spatial patterns of mangrove land use on the Amazon coast
title_full_unstemmed The effect of anthropogenic drivers on spatial patterns of mangrove land use on the Amazon coast
title_short The effect of anthropogenic drivers on spatial patterns of mangrove land use on the Amazon coast
title_sort effect of anthropogenic drivers on spatial patterns of mangrove land use on the amazon coast
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6594664/
https://www.ncbi.nlm.nih.gov/pubmed/31242200
http://dx.doi.org/10.1371/journal.pone.0217754
work_keys_str_mv AT hayashisanaen theeffectofanthropogenicdriversonspatialpatternsofmangrovelanduseontheamazoncoast
AT souzafilhopedrowalfirm theeffectofanthropogenicdriversonspatialpatternsofmangrovelanduseontheamazoncoast
AT nascimentowilsonr theeffectofanthropogenicdriversonspatialpatternsofmangrovelanduseontheamazoncoast
AT fernandesmarcuseb theeffectofanthropogenicdriversonspatialpatternsofmangrovelanduseontheamazoncoast
AT hayashisanaen effectofanthropogenicdriversonspatialpatternsofmangrovelanduseontheamazoncoast
AT souzafilhopedrowalfirm effectofanthropogenicdriversonspatialpatternsofmangrovelanduseontheamazoncoast
AT nascimentowilsonr effectofanthropogenicdriversonspatialpatternsofmangrovelanduseontheamazoncoast
AT fernandesmarcuseb effectofanthropogenicdriversonspatialpatternsofmangrovelanduseontheamazoncoast