Abundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in Amazonian Brazil

Abstract The precise role that deforestation for agricultural settlements and commercial forest products plays in promoting or inhibiting malaria incidence in Amazonian Brazil is controversial. Using publically available databases, we analyzed temporal malaria incidence (2009–2015) in municipalities...

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Autores principales:	Leonardo Suveges Moreira Chaves, Jan E. Conn, Rossana Verónica Mendoza López, Maria Anice Mureb Sallum
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2cd4b303e42448f7a27c299ddc91b464
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spelling	oai:doaj.org-article:2cd4b303e42448f7a27c299ddc91b4642021-12-02T15:08:29ZAbundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in Amazonian Brazil10.1038/s41598-018-25344-52045-2322https://doaj.org/article/2cd4b303e42448f7a27c299ddc91b4642018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25344-5https://doaj.org/toc/2045-2322Abstract The precise role that deforestation for agricultural settlements and commercial forest products plays in promoting or inhibiting malaria incidence in Amazonian Brazil is controversial. Using publically available databases, we analyzed temporal malaria incidence (2009–2015) in municipalities of nine Amazonian states in relation to ecologically defined variables: (i) deforestation (rate of forest clearing over time); (ii) degraded forest (degree of human disturbance and openness of forest canopy for logging) and (iii) impacted forest (sum of deforested and degraded forest patches). We found that areas affected by one kilometer square of deforestation produced 27 new malaria cases (r² = 0.78; F1,10 = 35.81; P < 0.001). Unexpectedly, we found both a highly significant positive correlation between number of impacted forest patches less than 5 km2 and malaria cases, and that these patch sizes accounted for greater than ~95% of all patches in the study area. There was a significantly negative correlation between extraction forestry economic indices and malaria cases. Our results emphasize not only that deforestation promotes malaria incidence, but also that it directly or indirectly results in a low Human Development Index, and favors environmental conditions that promote malaria vector proliferation.Leonardo Suveges Moreira ChavesJan E. ConnRossana Verónica Mendoza LópezMaria Anice Mureb SallumNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Leonardo Suveges Moreira Chaves Jan E. Conn Rossana Verónica Mendoza López Maria Anice Mureb Sallum Abundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in Amazonian Brazil
description	Abstract The precise role that deforestation for agricultural settlements and commercial forest products plays in promoting or inhibiting malaria incidence in Amazonian Brazil is controversial. Using publically available databases, we analyzed temporal malaria incidence (2009–2015) in municipalities of nine Amazonian states in relation to ecologically defined variables: (i) deforestation (rate of forest clearing over time); (ii) degraded forest (degree of human disturbance and openness of forest canopy for logging) and (iii) impacted forest (sum of deforested and degraded forest patches). We found that areas affected by one kilometer square of deforestation produced 27 new malaria cases (r² = 0.78; F1,10 = 35.81; P < 0.001). Unexpectedly, we found both a highly significant positive correlation between number of impacted forest patches less than 5 km2 and malaria cases, and that these patch sizes accounted for greater than ~95% of all patches in the study area. There was a significantly negative correlation between extraction forestry economic indices and malaria cases. Our results emphasize not only that deforestation promotes malaria incidence, but also that it directly or indirectly results in a low Human Development Index, and favors environmental conditions that promote malaria vector proliferation.
format	article
author	Leonardo Suveges Moreira Chaves Jan E. Conn Rossana Verónica Mendoza López Maria Anice Mureb Sallum
author_facet	Leonardo Suveges Moreira Chaves Jan E. Conn Rossana Verónica Mendoza López Maria Anice Mureb Sallum
author_sort	Leonardo Suveges Moreira Chaves
title	Abundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in Amazonian Brazil
title_short	Abundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in Amazonian Brazil
title_full	Abundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in Amazonian Brazil
title_fullStr	Abundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in Amazonian Brazil
title_full_unstemmed	Abundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in Amazonian Brazil
title_sort	abundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in amazonian brazil
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/2cd4b303e42448f7a27c299ddc91b464
work_keys_str_mv	AT leonardosuvegesmoreirachaves abundanceofimpactedforestpatcheslessthan5km2isakeydriveroftheincidenceofmalariainamazonianbrazil AT janeconn abundanceofimpactedforestpatcheslessthan5km2isakeydriveroftheincidenceofmalariainamazonianbrazil AT rossanaveronicamendozalopez abundanceofimpactedforestpatcheslessthan5km2isakeydriveroftheincidenceofmalariainamazonianbrazil AT mariaanicemurebsallum abundanceofimpactedforestpatcheslessthan5km2isakeydriveroftheincidenceofmalariainamazonianbrazil
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Abundance of impacted forest patches less than 5 km2 is a key driver of the incidence of malaria in Amazonian Brazil

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