Linking land cover and species distribution models to project potential ranges of malaria vectors: an example using Anopheles arabiensis in Sudan and Upper Egypt
Abstract Background Anopheles arabiensis is a particularly opportunistic feeder and efficient vector of Plasmodium falciparum in Africa and may invade areas outside its normal range, including areas separated by expanses of barren desert. The purpose of this paper is to demonstrate how spatial model...
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ftdoajarticles:oai:doaj.org/article:da8ba3b2766449c3a9fa8aa252ccd783 2023-05-15T15:18:26+02:00 Linking land cover and species distribution models to project potential ranges of malaria vectors: an example using Anopheles arabiensis in Sudan and Upper Egypt Fuller Douglas O Parenti Michael S Hassan Ali N Beier John C 2012-08-01T00:00:00Z https://doi.org/10.1186/1475-2875-11-264 https://doaj.org/article/da8ba3b2766449c3a9fa8aa252ccd783 EN eng BMC http://www.malariajournal.com/content/11/1/264 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-11-264 1475-2875 https://doaj.org/article/da8ba3b2766449c3a9fa8aa252ccd783 Malaria Journal, Vol 11, Iss 1, p 264 (2012) Anopheles arabiensis Sudan and Upper Egypt Species invasion potential Irrigation Land change Modeler MaxEnt Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2012 ftdoajarticles https://doi.org/10.1186/1475-2875-11-264 2022-12-30T21:58:33Z Abstract Background Anopheles arabiensis is a particularly opportunistic feeder and efficient vector of Plasmodium falciparum in Africa and may invade areas outside its normal range, including areas separated by expanses of barren desert. The purpose of this paper is to demonstrate how spatial models can project future irrigated cropland and potential, new suitable habitat for vectors such as An. arabiensis . Methods Two different but complementary spatial models were linked to demonstrate their synergy for assessing re-invasion potential of An. arabiensis into Upper Egypt as a function of irrigated cropland expansion by 2050. The first model (The Land Change Modeler) was used to simulate changes in irrigated cropland using a Markov Chain approach, while the second model (MaxEnt) uses species occurrence points, land cover and other environmental layers to project probability of species presence. Two basic change scenarios were analysed, one involving a more conservative business-as-usual (BAU) assumption and second with a high probability of desert-to-cropland transition (Green Nile) to assess a broad range of potential outcomes by 2050. Results The results reveal a difference of 82,000 sq km in potential An. arabiensis range between the BAU and Green Nile scenarios. The BAU scenario revealed a highly fragmented set of small, potential habitat patches separated by relatively large distances (maximum distance = 64.02 km, mean = 12.72 km, SD = 9.92), while the Green Nile scenario produced a landscape characterized by large patches separated by relatively shorter gaps (maximum distance = 49.38, km, mean = 4.51 km, SD = 7.89) that may be bridged by the vector. Conclusions This study provides a first demonstration of how land change and species distribution models may be linked to project potential changes in vector habitat distribution and invasion potential. While gaps between potential habitat patches remained large in the Green Nile scenario, the models reveal large areas of future habitat connectivity that may ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Malaria Journal 11 1 |
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ftdoajarticles |
language |
English |
topic |
Anopheles arabiensis Sudan and Upper Egypt Species invasion potential Irrigation Land change Modeler MaxEnt Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
spellingShingle |
Anopheles arabiensis Sudan and Upper Egypt Species invasion potential Irrigation Land change Modeler MaxEnt Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Fuller Douglas O Parenti Michael S Hassan Ali N Beier John C Linking land cover and species distribution models to project potential ranges of malaria vectors: an example using Anopheles arabiensis in Sudan and Upper Egypt |
topic_facet |
Anopheles arabiensis Sudan and Upper Egypt Species invasion potential Irrigation Land change Modeler MaxEnt Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Abstract Background Anopheles arabiensis is a particularly opportunistic feeder and efficient vector of Plasmodium falciparum in Africa and may invade areas outside its normal range, including areas separated by expanses of barren desert. The purpose of this paper is to demonstrate how spatial models can project future irrigated cropland and potential, new suitable habitat for vectors such as An. arabiensis . Methods Two different but complementary spatial models were linked to demonstrate their synergy for assessing re-invasion potential of An. arabiensis into Upper Egypt as a function of irrigated cropland expansion by 2050. The first model (The Land Change Modeler) was used to simulate changes in irrigated cropland using a Markov Chain approach, while the second model (MaxEnt) uses species occurrence points, land cover and other environmental layers to project probability of species presence. Two basic change scenarios were analysed, one involving a more conservative business-as-usual (BAU) assumption and second with a high probability of desert-to-cropland transition (Green Nile) to assess a broad range of potential outcomes by 2050. Results The results reveal a difference of 82,000 sq km in potential An. arabiensis range between the BAU and Green Nile scenarios. The BAU scenario revealed a highly fragmented set of small, potential habitat patches separated by relatively large distances (maximum distance = 64.02 km, mean = 12.72 km, SD = 9.92), while the Green Nile scenario produced a landscape characterized by large patches separated by relatively shorter gaps (maximum distance = 49.38, km, mean = 4.51 km, SD = 7.89) that may be bridged by the vector. Conclusions This study provides a first demonstration of how land change and species distribution models may be linked to project potential changes in vector habitat distribution and invasion potential. While gaps between potential habitat patches remained large in the Green Nile scenario, the models reveal large areas of future habitat connectivity that may ... |
format |
Article in Journal/Newspaper |
author |
Fuller Douglas O Parenti Michael S Hassan Ali N Beier John C |
author_facet |
Fuller Douglas O Parenti Michael S Hassan Ali N Beier John C |
author_sort |
Fuller Douglas O |
title |
Linking land cover and species distribution models to project potential ranges of malaria vectors: an example using Anopheles arabiensis in Sudan and Upper Egypt |
title_short |
Linking land cover and species distribution models to project potential ranges of malaria vectors: an example using Anopheles arabiensis in Sudan and Upper Egypt |
title_full |
Linking land cover and species distribution models to project potential ranges of malaria vectors: an example using Anopheles arabiensis in Sudan and Upper Egypt |
title_fullStr |
Linking land cover and species distribution models to project potential ranges of malaria vectors: an example using Anopheles arabiensis in Sudan and Upper Egypt |
title_full_unstemmed |
Linking land cover and species distribution models to project potential ranges of malaria vectors: an example using Anopheles arabiensis in Sudan and Upper Egypt |
title_sort |
linking land cover and species distribution models to project potential ranges of malaria vectors: an example using anopheles arabiensis in sudan and upper egypt |
publisher |
BMC |
publishDate |
2012 |
url |
https://doi.org/10.1186/1475-2875-11-264 https://doaj.org/article/da8ba3b2766449c3a9fa8aa252ccd783 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Malaria Journal, Vol 11, Iss 1, p 264 (2012) |
op_relation |
http://www.malariajournal.com/content/11/1/264 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-11-264 1475-2875 https://doaj.org/article/da8ba3b2766449c3a9fa8aa252ccd783 |
op_doi |
https://doi.org/10.1186/1475-2875-11-264 |
container_title |
Malaria Journal |
container_volume |
11 |
container_issue |
1 |
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1766348630555361280 |