Causes and consequences of change rates in the habitat of the threatened tropical porcupine, Sphiggurus mexicanus (Rodentia: Erethizontidae) in Oaxaca, Mexico: implications for its conservation
Land use changes by human activities have been the main causes of habitats and wildlife population degradation. In the Tehuantepec Isthmus in Oaxaca, the tropical habitat of the porcupine Sphiggurus mexicanus has been subject to vegetation and land use changes, causing its reduction and fragmentatio...
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| Formato: | Online |
| Idioma: | eng |
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Universidad de Costa Rica
2014
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/13587 |
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RBT13587 |
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ojs |
| institution |
Universidad de Costa Rica |
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Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Lorenzo, Consuelo Sántiz, Eugenia C. Navarrete, Darío A. Bolaños, Jorge |
| spellingShingle |
Lorenzo, Consuelo Sántiz, Eugenia C. Navarrete, Darío A. Bolaños, Jorge Causes and consequences of change rates in the habitat of the threatened tropical porcupine, Sphiggurus mexicanus (Rodentia: Erethizontidae) in Oaxaca, Mexico: implications for its conservation |
| author_facet |
Lorenzo, Consuelo Sántiz, Eugenia C. Navarrete, Darío A. Bolaños, Jorge |
| author_sort |
Lorenzo, Consuelo |
| description |
Land use changes by human activities have been the main causes of habitats and wildlife population degradation. In the Tehuantepec Isthmus in Oaxaca, the tropical habitat of the porcupine Sphiggurus mexicanus has been subject to vegetation and land use changes, causing its reduction and fragmentation. In this study, we estimated vegetation cover and land use (dn) change rates and assessed habitat availability and potential corridors for possible porcupine movements to avoid its isolation. In the study area, the type of vegetation with the most change rate value was the savanna (dn=-2.9), transformed into induced grasslands. Additionally, we have observed the porcupine (since 2011) in semi-deciduous (dn=-0.87) and tropical dry (dn=-0.89) forests that have been transformed in temporal agriculture and mesquite and induced grasslands. The vegetation inhabited by the porcupine resulted in recording a total of 64 plant species (44 trees, nine vines, seven herbs, four shrubs), of which the vine Bunchosia lanceolata showed the highest importance value (41.85) followed by the trees Guazuma ulmifolia (22.71), Dalbergia glabra (18.05), and Enterolobium cyclocarpum (17.02). The habitat evaluation and potential corridor analysis showed that only 1 501.93ha could be considered as suitable habitats with optimum structural conditions (coverage, surface, and distances to transformed areas) to maintain viable populations of S. mexicanus, and 293.6ha as corridors. An increasing destruction of the porcupines’ habitat has been observed in the study area due to excessive logging, and actions for this species and its habitat conservation and management have to be taken urgently. Consuelo Lorenzo1*, Eugenia C. Sántiz1, Darío A. Navarrete2 & Jorge Bolaños1 1 Departamento de Conservación de la Biodiversidad, El Colegio de la Frontera Sur, Carretera Panamericana y Periférico Sur s/n. C. P. 29290. San Cristóbal de Las Casas, Chiapas, México; clorenzo@ecosur.mx, esantiz@ecosur.edu.mx, jbolanos@ecosur.mx2Laboratorio de Información Geográfica, El Colegio de la Frontera Sur, Carretera Panamericana y Periférico Sur s/n. C. P. 29290. San Cristóbal de Las Casas, Chiapas, México; dnavarrete@ecosur.mx |
| title |
Causes and consequences of change rates in the habitat of the threatened tropical porcupine, Sphiggurus mexicanus (Rodentia: Erethizontidae) in Oaxaca, Mexico: implications for its conservation |
| title_short |
Causes and consequences of change rates in the habitat of the threatened tropical porcupine, Sphiggurus mexicanus (Rodentia: Erethizontidae) in Oaxaca, Mexico: implications for its conservation |
| title_full |
Causes and consequences of change rates in the habitat of the threatened tropical porcupine, Sphiggurus mexicanus (Rodentia: Erethizontidae) in Oaxaca, Mexico: implications for its conservation |
| title_fullStr |
Causes and consequences of change rates in the habitat of the threatened tropical porcupine, Sphiggurus mexicanus (Rodentia: Erethizontidae) in Oaxaca, Mexico: implications for its conservation |
| title_full_unstemmed |
Causes and consequences of change rates in the habitat of the threatened tropical porcupine, Sphiggurus mexicanus (Rodentia: Erethizontidae) in Oaxaca, Mexico: implications for its conservation |
| title_sort |
causes and consequences of change rates in the habitat of the threatened tropical porcupine, sphiggurus mexicanus (rodentia: erethizontidae) in oaxaca, mexico: implications for its conservation |
| title_alt |
Causas y consecuencias de las tasas de cambio en el hábitat del puerco espín tropical amenazado, Sphiggurus mexicanus (Rodentia: Erethizontidae), en Oaxaca, México: implicaciones para su conservación |
| publisher |
Universidad de Costa Rica |
| publishDate |
2014 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/13587 |
| work_keys_str_mv |
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RBT135872022-06-09T17:30:45Z Causas y consecuencias de las tasas de cambio en el hábitat del puerco espín tropical amenazado, Sphiggurus mexicanus (Rodentia: Erethizontidae), en Oaxaca, México: implicaciones para su conservación Causes and consequences of change rates in the habitat of the threatened tropical porcupine, Sphiggurus mexicanus (Rodentia: Erethizontidae) in Oaxaca, Mexico: implications for its conservation Lorenzo, Consuelo Sántiz, Eugenia C. Navarrete, Darío A. Bolaños, Jorge asociaciones vegetales Sphiggurus mexicanus corredor evaluación de hábitat Istmo de Tehuantepec puerco espines tropicales selección uso Sphiggurus mexicanus corridors habitat availability selection Tehuantepec Isthmus tropical porcupines use plant associations Los cambios de uso del suelo por actividades humanas, han sido de las principales causas de la degradación, reducción y fragmentación de los hábitats y poblaciones de fauna silvestre. En el Istmo de Tehuantepec, Oaxaca, el hábitat del puercoespín tropical Sphiggurus mexicanus, se encuentra sometido a cambios de cobertura vegetal y uso del suelo, que están causando la reducción y fragmentación de su hábitat. Debido a ello, estimamos las tasas de cambio de la cobertura vegetal y uso del suelo (dn), y evaluamos la disponibilidad del hábitat y de corredores vegetales potenciales para los posibles movimientos del puercoespín tropical y evitar su aislamiento. En el área de estudio el tipo de vegetación con mayor valor de tasa de cambio fue la sabana (dn=-2.9), transformado en pastizal inducido. Adicionalmente, observamos puercoespínes (desde 2011) en selva mediana subperennifolia (dn=-0.87) y selva baja caducifolia (dn=-0.89), los cuales han sido transformados en áreas de cultivo, selva baja espinosa y pastizal inducido. Caracterizamos la vegetación del hábitat del puercoespín, registrando un total de 64 especies vegetales (44 árboles, nueve bejucos, siete hierbas y cuatro arbustos), de los cuales, el bejuco Bunchosia lanceolata, presentó los valores más altos de importancia (41.85), seguidos por los árboles Guazuma ulmifolia (22.71), Dalbergia glabra (18.05), y Enterolobium cyclocarpum (17.02). El análisis de evaluación de hábitat y corredores potenciales mostró que solo 1 501.93ha pueden considerarse como hábitats adecuados con condiciones estructurales (de cobertura, superficie y distancias a áreas transformadas) para mantener poblaciones viables de S. mexicanus; y 293.6ha como corredores. La destrucción del hábitat del puerco espín en el área de estudio está incrementándose por la tala excesiva, por lo tanto, es prioritario emprender acciones para la conservación y manejo del taxón y su hábitat. Land use changes by human activities have been the main causes of habitats and wildlife population degradation. In the Tehuantepec Isthmus in Oaxaca, the tropical habitat of the porcupine Sphiggurus mexicanus has been subject to vegetation and land use changes, causing its reduction and fragmentation. In this study, we estimated vegetation cover and land use (dn) change rates and assessed habitat availability and potential corridors for possible porcupine movements to avoid its isolation. In the study area, the type of vegetation with the most change rate value was the savanna (dn=-2.9), transformed into induced grasslands. Additionally, we have observed the porcupine (since 2011) in semi-deciduous (dn=-0.87) and tropical dry (dn=-0.89) forests that have been transformed in temporal agriculture and mesquite and induced grasslands. The vegetation inhabited by the porcupine resulted in recording a total of 64 plant species (44 trees, nine vines, seven herbs, four shrubs), of which the vine Bunchosia lanceolata showed the highest importance value (41.85) followed by the trees Guazuma ulmifolia (22.71), Dalbergia glabra (18.05), and Enterolobium cyclocarpum (17.02). The habitat evaluation and potential corridor analysis showed that only 1 501.93ha could be considered as suitable habitats with optimum structural conditions (coverage, surface, and distances to transformed areas) to maintain viable populations of S. mexicanus, and 293.6ha as corridors. An increasing destruction of the porcupines’ habitat has been observed in the study area due to excessive logging, and actions for this species and its habitat conservation and management have to be taken urgently. Consuelo Lorenzo1*, Eugenia C. Sántiz1, Darío A. Navarrete2 & Jorge Bolaños1 1 Departamento de Conservación de la Biodiversidad, El Colegio de la Frontera Sur, Carretera Panamericana y Periférico Sur s/n. C. P. 29290. San Cristóbal de Las Casas, Chiapas, México; clorenzo@ecosur.mx, esantiz@ecosur.edu.mx, jbolanos@ecosur.mx2Laboratorio de Información Geográfica, El Colegio de la Frontera Sur, Carretera Panamericana y Periférico Sur s/n. C. P. 29290. San Cristóbal de Las Casas, Chiapas, México; dnavarrete@ecosur.mx Universidad de Costa Rica 2014-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.ucr.ac.cr/index.php/rbt/article/view/13587 10.15517/rbt.v62i4.13587 Revista de Biología Tropical; Vol. 62 No. 4 (2014): Volume 62 – Regular number 4 – December 2014; 1481–1494 Revista de Biología Tropical; Vol. 62 Núm. 4 (2014): Volumen 62 – Número regular 4 – Diciembre 2014; 1481–1494 Revista Biología Tropical; Vol. 62 N.º 4 (2014): Volume 62 – Regular number 4 – December 2014; 1481–1494 2215-2075 0034-7744 10.15517/rbt.v62i4 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/13587/15498 https://revistas.ucr.ac.cr/index.php/rbt/article/view/13587/15499 Copyright (c) 2014 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |