Relationship between land cover and Anophelinae species abundance, composition and diversity in NW Colombia

Naranjo-Díaz, Nelson; Hernández-Valencia, Juan C.; Marín, Alba; Correa, Margarita M.

doi:10.1016/j.meegid.2019.104114

Cited by 10 publications

(9 citation statements)

References 34 publications

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“…Various studies related to vector ecology have focused on entomological aspects linked to deforestation and malaria in East African [13][14][15][16] ; Southeast Asia 17,18 ; ecological frontiers in endemic regions 19 ; agricultural frontiers 20 , tropical America [21][22][23][24][25] ; among others (Supplementary Note 1). Forest cover loss allows more sunlight to reach the soil, leading to an increase in temperature of the larval habitats and the formation of puddles with neutral pH, thus favoring larval development, as observed in Ny.…”

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“…In addition, deforestation decreases biodiversity, causing a reduction in the abundance of species that prey on Anophelinae larvae and adults, leading to an increase in the abundance of vectors 30 . Therefore, irrespective of region and species, anthropogenic disturbance in natural forest landscapes can lead to changes in mosquito communities, causing an increase in the abundance of vector species 24,26,31 , and subsequently the risk of human exposure to vectors and thus to malaria, in areas where the landscape is conducive to vector-human contact 32,33 . These findings can be largely applied to other tropical and subtropical malaria endemic countries because deforestation disrupts environmental conditions, thus exacerbating ecological conditions, which favours species that are vectors of malaria.…”

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Global consumption and international trade in deforestation-associated commodities could influence malaria risk

et al. 2020

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Deforestation can increase the transmission of malaria. Here, we build upon the existing link between malaria risk and deforestation by investigating how the global demand for commodities that increase deforestation can also increase malaria risk. We use a database of trade relationships to link the consumption of deforestation-implicated commodities in developed countries to estimates of country-level malaria risk in developing countries. We estimate that about 20% of the malaria risk in deforestation hotspots is driven by the international trade of deforestation-implicated export commodities, such as timber, wood products, tobacco, cocoa, coffee and cotton. By linking malaria risk to final consumers of commodities, we contribute information to support demand-side policy measures to complement existing malaria control interventions, with co-benefits for reducing deforestation and forest disturbance.

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Global consumption and international trade in deforestation-associated commodities could influence malaria risk

et al. 2020

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“…31 A few studies conducted in these regions evaluated the relationship between land use and land cover types with Anopheles species composition and diversity at specific times. 20,28,32 Considering that for various organisms, a temporospatial effect of anthropogenic land cover changes has had an impact on community biodiversity-with species loss, replacement, or colonization events 13,33,34 -and also that no previous study has estimated the temporal effects of land cover variation in the Anopheles communities assemblage in the neotropical region, this study aimed to evaluate, at a temporospatial scale, the impact of anthropogenic land cover changes in the composition and diversity of the Anopheles species communities in two malariaendemic regions of Colombia.…”

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confidence: 99%

Spatial and Temporal Diversity Variation in the Anopheles Communities in Malaria-Endemic Regions of Colombia

Naranjo-Díaz

Hernández-Valencia

Gómez

et al. 2023

The American Journal of Tropical Medicine and Hygiene

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This study aimed to evaluate at a temporospatial scale, the influence of anthropogenic land cover changes in the Anopheles species community composition and diversity in two Colombian malaria-endemic regions, Bajo Cauca and Pacific. To determine variations over time, mosquitoes were collected in two time periods; land cover types were characterized on orthorectified aerial photographs, and landscape metrics were estimated for each locality and period. A temporal dissimilarity analysis to evaluated species replacement and the nestedness species loss/gain showed the influence of the species loss or gain component on Anopheles species assemblage (23%). The relationship between land cover variation and Anopheles beta diversity, evaluated by regression analysis, showed the effect of forest variation in the Anopheles community (βsim and forest r2 = 0.9323; βsne and forest r2 = 0.9425). Furthermore, a canonical correspondence analysis showed that the land cover types associated with Anopheles species presence were bare soil, shrub, wet areas, and forest. Results demonstrated the impact of land cover changes attributed to human activities on Anopheles population dynamics, over time; this was evidenced as species loss or gain, which was specific to each locality. Notably, the main malaria vectors were dominant in most localities over time, suggesting their tolerance to anthropogenic transformations; alternatively, the environmental changes are providing adequate ecological conditions for their persistence. Finally, the data generated are relevant for understanding the impact that environmental change may have on the dynamics of the neotropical malaria vectors. Thus, this research has potential implications for vector control interventions.

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“…Mosquito spatial distribution is influenced by abiotic factors such as precipitation and temperature, and biotic features that include among others, host, vegetation conditions and land covers; they determine breeding site availability, the physical environment of the adult mosquito [7][8][9][10][11][12][13], and influence mosquito-host presences [11]. Studies that have estimated the relationship between environmental variables and Anopheles species, indicate that land cover composition is one of the most influential factors affecting species abundance and distribution [7,[14][15][16]. Furthermore, human activities that modify land cover composition impact the dynamics of disease transmission [17].…”

Section: Introductionmentioning

confidence: 99%

“…Few studies have evaluate the association of land cover types and mosquito biology, and specifically, the impact of land cover alterations in Anopheles composition, distribution and behavior, aspects known to affect malaria transmission [19,[21][22][23][24]. Results of a recent study conducted in the Colombian malaria endemic Urabá region showed that land covers derived from anthropic activities favored the presence and abundance of the main malaria vectors [16]. Also, in northern Peruvian Amazon, deforestation was associated with increased human-biting activity by the primary malaria vector Anopheles darlingi [22], and with larval habitat availability which increased vector presence [23].…”

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confidence: 99%

Effect of land cover and landscape fragmentation on anopheline mosquito abundance and diversity in an important Colombian malaria endemic region

et al. 2020

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Landscape structure influences the distribution and abundance of anopheline mosquitoes and has an indirect impact on malaria transmission. This work aimed to determine the effect of land cover and landscape fragmentation on anopheline mosquito abundance and diversity in an important Colombian malaria endemic area, the Bajo Cauca region. Diversity indices were calculated for Anopheles mosquitoes collected in various localities of the region. Land cover types were characterized using orthorectified aerial photographs to estimate landscape metrics. The relationship between landscape fragmentation and species diversity was evaluated by regression analysis. The correlation between species abundance and land cover types was determined using canonical correspondence analyses. Results showed a statistically significant tendency for a lower diversity of the Anopheles community in landscapes with higher patch number, patch density and effective mesh size. For most species, there was evidence of a significant relationship between species abundance and land covers modified by anthropic activities which generate forest loss. These results indicate that activities that modify the landscape structure and land cover composition generate changes that affect the spatial distribution and composition of epidemiologically-important Anophele s species, which may impact malaria distribution in a region. This information is useful to guide control interventions that promote unfavorable landscapes for malaria vector propagation.

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Relationship between land cover and Anophelinae species abundance, composition and diversity in NW Colombia

Cited by 10 publications

References 34 publications

Global consumption and international trade in deforestation-associated commodities could influence malaria risk

Global consumption and international trade in deforestation-associated commodities could influence malaria risk

Spatial and Temporal Diversity Variation in the Anopheles Communities in Malaria-Endemic Regions of Colombia

Effect of land cover and landscape fragmentation on anopheline mosquito abundance and diversity in an important Colombian malaria endemic region

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