Cerrar

No. de sistema: 000050485

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 110524m20119999waubr^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mxg--
a| n- mx-cp
a| n-mx-oa
a| n-mx-si
a| n-mx-so
044 _ _ a| wau
245 0 0 a| Conservation assessment of Guaiacum sanctum and Guaiacum coulteri
b| historic distribution and future trends in Mexico
520 1 _ a| Guaiacum sanctum and Guaiacum coulteri are long-lived Mesoamerican timber tree species heavily exploited throughout their range and considered to be at risk of extinction. Both species are included on the IUCN Red List and on CITES Appendix II, but there has been no formal assessment of the conservation status of either species. We used ecological niche modeling and rapid assessments of local density and population size structure to provide such evaluations. For the year 2000, we estimated geographic range sizes for G. sanctum and G. coulteri of 95,422 and 130,973 km2, respectively. The main core remaining habitat for G. sanctum occurs in Campeche State (Yucatan Peninsula), where populations exhibit high adult abundance and profuse regeneration. Several areas along the Mexican Pacific coast remain with suitable habitat for G. coulteri. Guaiacum coulteri is at greater risk as only 1.3 percent of its current habitat is protected, which contrasts with the 13.2 percent of current habitat protected for G. sanctum. We projected that available habitat for G. sanctum and G. coulteri will decline by a further 30–50 percent by 2020 if estimated habitat loss rates continue. We suggest that under the IUCN criteria, the conservation status of G. sanctum and G. coulteri should be updated to near threatened and vulnerable, respectively. Additionally, we conclude that the amount of protected habitat needs to be increased to safeguard both species. Our study provides a quantitative basis for updating the conservation status of both species and illustrates an assessment framework that could be applied to other threatened tree species.
650 _ 4 a| Guayacán real
650 _ 4 a| Guaiacum coulteri
650 _ 4 a| Distribución geográfica
650 _ 4 a| Conservación de bosques
651 _ 4 a| Yucatán (Península) (México)
651 _ 4 a| Chiapas (México)
651 _ 4 a| Oaxaca (México)
651 _ 4 a| Sinaloa (México)
651 _ 4 a| Sonora (México)
700 1 _ a| López Toledo, Leonel
700 1 _ a| González Salazar, Constantino
e| coaut.
700 1 _ a| Burslem, David F. R. P
e| coaut.
700 1 _ a| Martínez Ramos, Miguel
e| coaut.
773 0 _
t| Biotropica
g| Vol. 43, no. 2 (March 2011), p. 246-255
x| 0006-3606
900 _ _ a| En hemeroteca, SIBE-San Cristóbal
902 _ _ a| Nzp/MM
904 _ _ a| Mayo 2011
905 _ _ a| Artfrosur
905 _ _ a| Servibosques
LNG eng
Cerrar
*En hemeroteca, SIBE-San Cristóbal
Conservation assessment of Guaiacum sanctum and Guaiacum coulteri: historic distribution and future trends in Mexico
López Toledo, Leonel (autor)
González Salazar, Constantino (autor)
Burslem, David F. R. P (autor)
Martínez Ramos, Miguel (autor)
Contenido en: Biotropica. Vol. 43, no. 2 (March 2011), p. 246-255. ISSN: 0006-3606
Bibliotecas:
San Cristóbal
No. de sistema: 50485
Tipo: Artículo


Inglés

"Guaiacum sanctum and Guaiacum coulteri are long-lived Mesoamerican timber tree species heavily exploited throughout their range and considered to be at risk of extinction. Both species are included on the IUCN Red List and on CITES Appendix II, but there has been no formal assessment of the conservation status of either species. We used ecological niche modeling and rapid assessments of local density and population size structure to provide such evaluations. For the year 2000, we estimated geographic range sizes for G. sanctum and G. coulteri of 95,422 and 130,973 km2, respectively. The main core remaining habitat for G. sanctum occurs in Campeche State (Yucatan Peninsula), where populations exhibit high adult abundance and profuse regeneration. Several areas along the Mexican Pacific coast remain with suitable habitat for G. coulteri. Guaiacum coulteri is at greater risk as only 1.3 percent of its current habitat is protected, which contrasts with the 13.2 percent of current habitat protected for G. sanctum. We projected that available habitat for G. sanctum and G. coulteri will decline by a further 30–50 percent by 2020 if estimated habitat loss rates continue. We suggest that under the IUCN criteria, the conservation status of G. sanctum and G. coulteri should be updated to near threatened and vulnerable, respectively. Additionally, we conclude that the amount of protected habitat needs to be increased to safeguard both species. Our study provides a quantitative basis for updating the conservation status of both species and illustrates an assessment framework that could be applied to other threatened tree species."

SIBE San Cristóbal
Codigo de barra
Estado
Colección
50517-10
(Disponible)
Artículos de la frontera sur