Criterios para contemplar la conectividad del paisaje en la planificación territorial y sectorial

Vicente, Mikel Gurrutxaga San; Valencia, Pedro José Lozano

doi:10.14198/ingeo2007.44.04

Cited by 6 publications

(6 citation statements)

References 38 publications

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“…These structures maintain landscape connectivity and strengthen permeability by allowing animal circulation. However, it is essential that such structures have particular characteristics such as the presence of dry margins underneath that allow animal circulation [59][60][61][62]. The results obtained in this study suggest that most of the bridges or sewers found in the study area did not have a dry section that allowed fauna to cross underneath.…”

Section: Discussionmentioning

confidence: 84%

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Prediction of Sites with a High Probability of Wild Mammal Roadkill Using a Favourability Function

2021

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Roads are one of the main causes of loss of biodiversity, with roadkill one of the main causes of mortality. The aim of this research was to identify sites with a high probability of roadkill of medium and large mammals, and the environmental variables that would explain it. We used the favourability function (F) to build the predictive models. There were 57 explanatory variables, and we collected 685 records of 10 species of medium and large native wild mammals from the ECOBIO Uruguay databases. They were grouped into native forest and grassland species, according to the main habitat. Two models were developed, one with all the variables and one with the anthropogenic variables. For both groups, the model obtained with all the variables was the most significant according to the evaluation indices used. This made it possible to identify the hot spots of roadkill (F > 0.6) for each of the groups. The anthropic variables were the ones that best explained these hot spots. This allowed the identification of sites where the probability of roadkill is high and requires a monitoring plan to implement mitigation measures in the future.

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Section: Discussionmentioning

confidence: 84%

“…This indicates that the greater the number of bridges, the greater the probability of roadkill. Several studies highlight the importance of bridges and sewers as potential wildlife passageways [59][60][61][62]. These structures maintain landscape connectivity and strengthen permeability by allowing animal circulation.…”

Section: Discussionmentioning

confidence: 99%

Prediction of Sites with a High Probability of Wild Mammal Roadkill Using a Favourability Function

2021

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“…A partir de los hallazgos del presente estudio, es razonable proponer que las zonas ribereñas constituyan también rutas oficiales de conectividad y de esa manera aumentar la probabilidad de que las áreas silvestres protegidas involucradas se mantengan comunicadas. Otros autores ya han destacado el valor de estas zonas como rutas de conectividad (Gurrutxaga & Lozano, 2007;García & Abad, 2014). Sin embargo, los resultados obtenidos también develan la necesidad de recuperar la conectividad estructural en determinados sectores tanto de la ruta oficial como de las zonas ribereñas.…”

Section: Discussionunclassified

Permanencia de la cobertura natural en dos propuestas de conectividad entre áreas silvestres protegidas de Costa Rica

Zeledón

Beita

2019

URJ

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Introducción: Las zonas ribereñas constituyen una alternativa para lograr conectividad en paisajes donde la cobertura natural ha sido fragmentada. Objetivo: Analizamos la conectividad estructural entre dos áreas silvestres protegidas de Costa Rica mediante zonas ribereñas y una ruta oficialmente establecida. Métodos: Las áreas silvestres protegidas fueron la Reserva Biológica Lomas Barbudal y la Zona Protectora Mirallaves, ubicadas hacia el noroeste del país, en la provincia Guanacaste. A partir de la clasificación supervisada de dos imágenes Landsat de los años 1997 y 2017, obtuvimos la cobertura de la tierra en las zonas ribereñas y la ruta oficial. Con base en esta información analizamos la permanencia del bosque en las dos propuestas de conectividad y calculamos varios indicadores de fragmentación. Resultados: El bosque fue más extenso y permanente en las zonas ribereñas que en la ruta oficial; no obstante, en ambas propuestas de conectividad se encontraron sectores con concentración de cobertura boscosa distantes entre sí y una interrupción de tal conectividad. En el caso de la ruta oficial, la interrupción se debió principalmente a áreas urbanas mientras que en las zonas ribereñas al desarrollo agrícola. Conclusión: A partir de los hallazgos del presente estudio, resulta razonable proponer las zonas ribereñas como rutas de conectividad estructural entre las áreas silvestres protegidas involucradas; sin embargo, tanto en estas zonas como en la ruta oficial es necesario recuperar dicha conectividad.

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“…Hence, the definition and application of connectivity criteria is one of the most powerful tools used for nature conservation. In this sense, and following Gurrutxaga and Lozano [4], the capacity of the land to allow the displacement of organisms between land patches with resources is called structural connectivity. Ecological corridors make this connectivity possible and should be considered as an essential resource in the evaluation of biodiversity and biological conservation [5].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, MSPA connectivity analysis considers the network components and the node/connector analysis through indexes that reveal information on the functional connectivity of the territory. This functional connectivity can be defined as "the land's ability of the land to allow the movement of organisms among patches with resources" [4]. Through connectivity analysis and fragmentation of grasslands, it is possible to define their conservation status [22] as well as contribute to their survival [23]; where the spatial resolution of the mapping information used as a basis is extremely important as it can influence the results of MSPA analysis and the PC index [24].…”

Section: Introductionmentioning

confidence: 99%

Livestock Trails as Keystone Structural Connectors for Pastureland Analysis Based on Remote Sensing and Structural Connectivity Assessment

Gutiérrez¹,

Velázquez

Rodríguez

et al. 2021

Sustainability

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This paper presents a methodology to study the connectivity that livestock trails can offer to guarantee the transit of organisms and access to pasturelands. In this regard, a connectivity analysis was carried out in two scenarios: Basic Scenario (Scenario 1: pasture) and Extended Scenario (Scenario 2: pasture + livestock trails) by using the Morphological Spatial Pattern Analysis (MSPA). The result of structural connectivity analysis, MSPA, showed that livestock trails reduce the fragmentation of the optimal terrain (pasturelands) for livestock activity, since the effective corridors are more numerous, and the edge effect is also reduced. Therefore, MSPA analysis allows the classification of any landscape typology at the pixel level and mapping of corridor structures (connecting elements) and other categories of spatial patterns on a continental scale. The results of the study show the importance of carrying out this type of analysis in different times of the year, detecting the evolution of connectivity throughout the year. Spring months and larger areas of pastureland offer the best conditions for the movements of organisms. This study aims to provide useful information for landscape or territorial planning, and it could be used to improve the management of wildlife dependent on high quality pastures, as well as to promote the management of semi-extensive livestock.

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Criterios para contemplar la conectividad del paisaje en la planificación territorial y sectorial

Cited by 6 publications

References 38 publications

Prediction of Sites with a High Probability of Wild Mammal Roadkill Using a Favourability Function

Prediction of Sites with a High Probability of Wild Mammal Roadkill Using a Favourability Function

Permanencia de la cobertura natural en dos propuestas de conectividad entre áreas silvestres protegidas de Costa Rica

Livestock Trails as Keystone Structural Connectors for Pastureland Analysis Based on Remote Sensing and Structural Connectivity Assessment

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