Identifying potential conservation areas in the Cuitzeo Lake basin, Mexico by multitemporal analysis of landscape connectivity

Ayram, Camilo A. Correa; Mendoza, Manuel E.; Pérez-Salicrup, Diego R.; Granados, Erna López

doi:10.1016/j.jnc.2014.03.010

Cited by 39 publications

(22 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The IIC integrates into a single value of connectivity, the area of fragments of native vegetation (hereafter habitat patches), and the connectivity of the landscape [61]. The habitat patches of the focal species are represented as nodes, and the topological relations or connections between them are represented as links based on graph theory [62]. The values of IIC range from 0 to 1, increasing as the connectivity improves, thus a value of 1 would be reached in the hypothetical case of a landscape being totally occupied by the habitat.…”

Section: Determining the Distance Threshold For Landscape Connectivity Analysismentioning

confidence: 99%

Restoration and Conservation of Priority Areas of Caatinga’s Semi-Arid Forest Remnants Can Support Connectivity within an Agricultural Landscape

Salazar

Arellano

Muñoz‐Sáez

et al. 2021

Land

View full text Add to dashboard Cite

Land-use and land-cover (LULC) changes are major drivers of biodiversity loss in semi-arid regions, such as the Caatinga biome located in the Northeast of Brazil. We investigated landscape dynamics and fragmentation in an area of the São Francisco Valley in the Brazilian Caatinga biome and measured the effect of these dynamics on ecological, functional and structural connectivity over a 33-year period (1985–2018). We calculated landscape connectivity indices based on graph theory to quantify the effect of further agricultural expansion on ecological connectivity at the landscape scale. We used a multicriteria decision analysis that integrates graph-based connectivity indices at the habitat patch scale, combined with an index of human disturbance to identify patches that, if conserved and restored, preserve the connectivity of the landscape most effectively. In the period studied, agriculture increased at a rate of 2104 ha/year, while native Caatinga vegetation decreased at a rate of 5203 ha/year. Both dense and open Caatinga became more fragmented, with the number of fragments increasing by 85.2% and 28.6%, respectively, whilst the average fragment size decreased by 84.8% and 6.1% for dense and open Caatinga, respectively. If agriculture patches were to expand by a 300 m buffer around each patch, the overall ecological connectivity could be reduced by 6–15%, depending on the species’ (small- to mid-size terrestrial vertebrates) mobility characteristics for which the connectivity indices were calculated. We provided explicit spatial connectivity and fragmentation information for the conservation and restoration of the Caatinga vegetation in the studied area. This information helps with conservation planning in this rapidly changing ecosystem.

show abstract

Section: Determining the Distance Threshold For Landscape Connectivity Analysismentioning

confidence: 99%

Restoration and Conservation of Priority Areas of Caatinga’s Semi-Arid Forest Remnants Can Support Connectivity within an Agricultural Landscape

Salazar

Arellano

Muñoz‐Sáez

et al. 2021

Land

View full text Add to dashboard Cite

show abstract

“…Evitar la fragmentación de los hábitats y mantener la conectividad son prioridades de conservación para proteger la biodiversidad de los ecosistemas (Vos et al, 2008;Lindemayer et al, 2012;Correa-Ayram et al, 2014).…”

Section: Introductionunclassified

Estudios de conectividad del paisaje en América Latina: retos de investigación

Leija

Mendoza

2021

MYB

Self Cite

View full text Add to dashboard Cite

Los estudios enfocados a la conectividad del paisaje son actualmente claves para la planificación de la conservación de los ecosistemas; sin embargo, sólo un número limitado de estudios proporcionan datos empíricos sobre los beneficios de la conectividad en la conservación de los ecosistemas terrestres. En este estudio, se analizaron las publicaciones sobre estudios de conectividad particularmente para cuatro tópicos en América Latina de 2000 a 2018, para brindar una visión del estado actual, retos y avances del conocimiento. La búsqueda se realizó en diferentes bases de datos, las cuales se seleccionaron 217 trabajos. Todas las referencias seleccionadas fueron revisadas y clasificadas considerando: a) año de publicación, b) tipo de investigación, c) país de América Latina donde se realizó, d) área de estudio, e) tipo de ecosistema y f) objetivos de la investigación. Los resultados muestran que la mayor parte de los estudios de conectividad se realizan considerando los tópicos: a) de planificación para la restauración, b) modelado y planificación de la cobertura vegetal/uso del suelo y c) servicios ecosistémicos. Sin embargo, los trabajos publicados sobre conectividad y cambio climático han sido escasos. También fue posible identificar publicaciones que abordaron dos tópicos simultáneamente: a) estudios de modelado y planificación de la cobertura vegetal/uso del suelo con estudios de la planificación para la restauración, b) estudios en servicios ecosistémicos con cambio climático, and c) planificación para la restauración con cambio climático. Sin embargo, existe la necesidad de incrementar sustancialmente las investigaciones en los temas de conectividad en América latina.

show abstract

“…The resistance distance method solves part of these problems because it considers different levels of suitability for the dispersion of plants and animals (McRae and Kavanagh, 2006), from hostile environments to different patch mosaics (Thiele et al, 2018a). This approach is advantageous because it explains the random movements in the landscape, considering more than one possible path (McRae and Kavanagh, 2006; Thiele et al, 2018a), and providing solid data for conservation planning and decision making (Correa Ayram et al, 2014; Fuller et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Identifying priority connectivity in a tropical forest hotspot severely affected by land use changes

Junior

Heringer

Bueno

et al. 2020

Preprint

View full text Add to dashboard Cite

The probability that a propagule reaches a certain location where it can establish and persist is affected by the distance from the source. Fragmented landscapes often promote the isolation of habitats that hinder or impede the movement of species that affect their range distribution, even when environmental conditions are adequate. Studies that assess the connectivity of the landscape are essential to ensure that ecological conservation planning covers all vital processes that occur on a landscape scale. Based on the classification of land cover in the Rio Doce Basin - RDB, we used a habitat / non-habitat approach to assess RDB connectivity for tree species. Based on circuit theory, we built 6 surface models of resistance based on habitat and non-habitat areas. We performed the analysis using the GIS plug-in and Linkage Mapper to generate lest cost path maps. The RDB is very fragmented, but still has functionally connected regions. The west to nothwestern and southeastern portions of the basin are well-connected and demand conservation practices, while the center-north of the basin and the far southwest are regions with greater resistance to connectivity as a result of strong anthropic pressures that reduce forests, requiring intervention through restoration projects avoiding loss due to lack of connectivity. In addition, land reclamation projects in degraded areas must also be organized in the Linhares region, as it is inserted in a region of very high biodiversity with a high level of endemism and a high number of threatened species.

show abstract

Identifying potential conservation areas in the Cuitzeo Lake basin, Mexico by multitemporal analysis of landscape connectivity

Cited by 39 publications

References 44 publications

Restoration and Conservation of Priority Areas of Caatinga’s Semi-Arid Forest Remnants Can Support Connectivity within an Agricultural Landscape

Restoration and Conservation of Priority Areas of Caatinga’s Semi-Arid Forest Remnants Can Support Connectivity within an Agricultural Landscape

Estudios de conectividad del paisaje en América Latina: retos de investigación

Identifying priority connectivity in a tropical forest hotspot severely affected by land use changes

Contact Info

Product

Resources

About