Vegetación de bordes en un bosque mesófilo de montaña del occidente de México

Abstract

<p>Species composition, diversity, structure and microclimate were compared in two edge type of montane cloud forest (FF, edges with pine forest and FS, secondary shrubland) within a forest-edge-exterior gradient at Sierra de Manantlán Biosphere Reserve (Jalisco, Mexico). The cloud forest presented higher richness (126 species, 52 interior habitat specifi c) than pine forests (84) and shrublands (71). Richness and diversity were similar in FF, but species replacement was higher in FS. Density, diameter structure, basal area and canopy cover were major in FF than in FS. Microclimatic and soil condition, was gradual in FF edges and abrupt in FS edges. Tree species of the cloud forests (high density of seedlings and saplings <5 cm diameter breast height) are colonizing the understory of adjacent pine forests, whereas in shrublands their establishment appears to be limited by competition with shrubs and herbaceous species and microclimatic conditions. Our results highlight the importance of considering edge type contrast in conservation and restoration of cloud forest in forest landscapes.</p>

Estructura Del Bosque Templado De Galería en La Sierra De Quila, Jalisco

“…In various studies which do not include the gallery forest, the baseline in temperate forests has been documented to be larger than in dry tropical forests (Camacho et al, 2006). For instance, Santiago et al (2009) estimated an average baseline area of 52.4 m 2 ha -1 in a mesophytic forest site (1 850 masl), and of 35.6 m 2 ha -1 in a pine-oak site (2 100 masl) in Las Joyas, Manantlán, Jalisco, while Camacho et al (2006) registered an average baseline area of 108.6 m 2 ha -1 in a gallery forest located at an altitude range between 1 650 and 1 800 m in Morelos: On the other hand, Zacarías et al (2011) cite 17.8 m 2 ha -1 for a deciduous tropical forest on the El Águila mountain in Michoacán. Quantitative studies of riparian communities in Mexico are still scarce; for this reason, it is not possible to distinguish whether there is a tendency in this type of communities (Camacho et al, 2006).…”

“…En diversos trabajos (que no incluyen bosque de galería) se ha documentado que el área basal en bosques templados suele ser mayor que en bosques tropicales secos (Camacho et al , 2006). Por ejemplo, Santiago et al (2009) estimaron un área basal promedio de 52.4 m 2 ha -1 en un sitio de bosque mesófilo (1 850 msnm) y de 35.6 m 2 ha -1 en un sitio de bosque de pino-encino (2 100 msnm) en Las Joyas, Manantlán, Jalisco; mientras que Camacho et al (2006) consignaron un área basal promedio de 108. 6 m 2 ha -1 en un bosque de galería en la cota altitudinal entre 1 650 -1 800 m en Morelos; en contraste Zacarías et al (2011) citan 17.8 m 2 ha -1 para un bosque tropical caducifolio del cerro El Águila, Michoacán.…”

Diversidad de árboles del ecosistema bosque tropical montano nuboso del altiplano occidental de Guatemala

“…Spach y Clethra mexicana A. DC., y los géneros Alnus, Buddleja, Clethra, Cornus, Hedyosmum, Morella, Myrsine, Nectandra, Quercus, Saurauia y Symplocos (Bussmann, 2005;Ramírez-Marcial et al, 2006;Santiago-Pérez et al, 2009), definidos como caracte-rísticos del bosque nuboso (Monterroso-Rivas et al, 2012), existen en el ecosistema estudiado (Tabla 2). Las familias consideradas dominantes en bosques nubosos a altitudes mayores a 2,700 m s. n. m. en la Sierra Andina son Rosaceae y Lauraceae (Girardin et al, 2014), Lauraceae y Fagaceae en el bosque mesófilo de México (Ramírez-Marcial et al, 2006), mismas que figuran entre las más diversas en el área de estudio.…”

Small-Scale Environmental Drivers of Plant Community Structure and Diversity in Neotropical Montane Cloud Forests Harboring Threatened Magnolia dealbata in Southern Mexico

“…However, elevation was not correlated with the strongest gradient (axis 1) on any of the three ordinations. Soil acidity is common in CF [114]; in Mexico, it has been recorded in both the Atlantic slopes of Veracruz and Oaxaca [58,78,115], and the Pacific slopes of Guerrero and Jalisco [116,117] from early to the late-successional stage and under different conservation and extraction regimes, as shown for Juquila Vijanos in the Sierra Norte de Oaxaca [78,79,110].…”