scholarly journals Análisis estructural de un bosque mesófilo de montaña en el extremo oriental de la Sierra Madre del Sur (Oaxaca), México

2017 ◽  
pp. 13
Author(s):  
Nancy R. Mejía-Domínguez ◽  
Jorge A. Meave ◽  
Carlos A. Ruiz-Jiménez
Keyword(s):  
Vegetation Type ◽  
Cloud Forest ◽  
Basal Area ◽  
Individual Species ◽  
Crown Cover ◽  
Sierra Madre ◽  
Tropical America ◽  
Sierra Madre Del Sur ◽  
Bosque Mesófilo De Montaña ◽  
Topographic Heterogeneity

We analyzed vegetation structure in a 1-ha plot of cloud forest at Santo Tomás Teipan (Oaxaca, Mexico). Considering its marginal location near the edge of a region covered by this vegetation type on the Sierra Madre del Sur, we examined to what extent this community differed from other cloud forest communities thriving under better conditions for this plant formation. Each individual with diameter at breast height (DBH) ≥2.5 cm was located in a system of coordinates; besides, its taxonomic identity, crown cover, DBH and total height as well as the height to the first branch and the crown base were recorded. Basal area (46.41 m2 ha-1), cover (44,247.33 m2 ha-1), and density (1,035 ind. ha-1) figures fall within the known range for the lower montane rain forests of tropical America. According to structure and composition, two strata were differentiated: a lower one (2 to 11 m), and an upper one (11 to 30 m). Overall dominance corresponded to Cornus disciflora, an upper stratum species. In the plot two topographic conditions were distinguished, namely lower ravine slope and hilltop, which seem to be associated to contrasting soil characteristics. Although this topographic heterogeneity does not match the structural homogeneity of the forest, we detected some clumped patterns for individual species that were preferentially distributed in one of these conditions. The structure of the forest at Teipan is comparable to that of similar forests, but its diversity is relatively low. This may be explained by the absence of taxa occurring in the adjacent dry tropical communities, unlike other cloud forests whose flora appears to be enriched with some elements typical of tropical moist communities with which they abut.

scholarly journals El bosque mesófilo de montaña en el municipio de Landa de Matamoros, Querétaro, México

2017 ◽  
pp. 13 ◽  
Author(s):  
Sandra Cartujano ◽  
Sergio Zamudio ◽  
Othón Alcántara-Ayala ◽  
Isolda Luna
Keyword(s):  
Vascular Plants ◽  
Vegetation Type ◽  
Cloud Forest ◽  
Conservation Status ◽  
Biosphere Reserve ◽  
Distribution Map ◽  
Floristic Inventory ◽  
Sierra Madre ◽  
La Joya ◽  
Bosque Mesófilo De Montaña

A floristic inventory of the cloud forest of some localities of Landa de Matamoros municipality, Querétaro, was undertaken; this area is located in the Sierra Madre Oriental and is part of the Sierra Gorda Biosphere Reserve. In this zone the forest is  fragmented, but it has a relatively good conservation status in some localities such as Camarones, Neblinas, La Yesca, and La Joya del Hielo. A floristic list of vascular plants composed by 130 families, 465 genera and 774 species was obtained. A  distribution map of this vegetation type is included.

scholarly journals Florística del bosque mesófilo de montaña de Molocotlán, Molango-Xochicoatlán, Hidalgo, México

2017 ◽  
pp. 101
Author(s):  
Rafael Mayorga-Saucedo ◽  
Isolda Luna-Vega ◽  
Othón Alcántara-Ayala
Keyword(s):  
Cloud Forest ◽  
Sierra Madre Oriental ◽  
Sierra Madre ◽  
Present Distribution ◽  
Bosque Mesófilo De Montaña

The cloud forest of Molocotlán indudes part of two municipalities of the Hidalgo State, Molango and Xochicoatlán, and is located in the Huasteca region in the Sierra Madre Oriental. Arboreal vegetation is divided in three vertical strata: high (20-30 m), medium (8-20 m) , and lower (2 -8 m). The flora of the area includes 391 species, 270 genera, and 112 families. Genera are grouped according to their present distribution in six categories; a high percentaje of them are exclusively American.

scholarly journals Geographic and ecological analysis of the Bearded Wood Partridge Dendrortyx barbatus: some insights on its conservation status

2012 ◽  
Vol 23 (3) ◽  
pp. 371-385 ◽  
Author(s):  
CLAUDIO MOTA-VARGAS ◽  
OCTAVIO R. ROJAS-SOTO ◽  
CARLOS LARA ◽  
CITLALLI CASTILLO-GUEVARA ◽  
CLAUDIA BALLESTEROS-BARRERA
Keyword(s):  
Vegetation Type ◽  
Cloud Forest ◽  
Conservation Status ◽  
Distribution Area ◽  
Risk Category ◽  
Mountain Range ◽  
Environmental Distribution ◽  
Sierra Madre ◽  
Determining Factors ◽  
Key Factor

SummaryDelimiting the distribution of a species is a complex task because many determining factors are difficult to assess in the field. This is important because distribution is a key factor in the decision-making process for conservation. One example is the Bearded Wood Partridge Dendrortyx barbatus, a species endemic to the temperate forests of the Sierra Madre Oriental (SMO) mountain range in Mexico. Lack of knowledge of its distribution has generated confusion over the assignment of the correct risk category. With the aim of predicting the distribution area of the Bearded Wood Partridge and contributing to strategies for its conservation, we updated and extended the knowledge of its distribution by modelling its ecological niche using GARP and MaxEnt algorithms. We also analysed its environmental distribution using principal components analysis, and contrasted the two most important environmental variables with the species’s distribution based on vegetation type. We found that the area potentially occupied by this species covers 17,956 km2 according to GARP and 12,974 km2 according to MaxEnt. We suggest that there is a biogeographic barrier which limits the distribution of this species in the southern part of its range. The abiotic variables that best explain its distribution are average annual precipitation and elevation, both of which coincide well with the distribution of cloud forest. A redefinition of the current range as recognised by IUCN is proposed along with the need to change its national risk category.

scholarly journals Nuevos registros de licofitas y helechos para el estado de Puebla, México

2020 ◽  
Author(s):  
Aniceto C. Mendoza Ruiz ◽  
Jacqueline Ceja Romero
Keyword(s):  
New Records ◽  
Vegetation Type ◽  
Cloud Forest ◽  
Field Work ◽  
The State ◽  
Evergreen Forest ◽  
Altitudinal Distribution ◽  
Tropical Evergreen Forest ◽  
Bosque Mesófilo De Montaña ◽  
Forest Vegetation Type

Resumen:Antecedentes y Objetivos: Son pocos los trabajos florísticos que se han publicado sobre licofitas y helechos (pteridofitas en conjunto) de Puebla, México, por lo que se considera muy probable que la riqueza de especies en el estado sea mayor a la que se tiene documentada hasta el momento.El objetivo de este trabajo es reportar nuevos registros de este grupo de plantas para la entidad, incluyendo su distribución municipal y altitudinal, así como el tipo de vegetación en que se presentan.Métodos: De 2010 a 2018 se efectuaron diversos viajes de recolección a distintas localidades de Puebla, durante los cuales se recolectaron y herborizaron ejemplares de licofitas y helechos, que fueron identificados y depositados en el Herbario de la Universidad Autónoma Metropolitana-Iztapalapa (UAMIZ). La información generada se confrontó con la lista de especies reportadas en la literatura para la entidad, lo que permitió reconocer los nuevos registros.Resultados clave: Se documenta por primera vez para Puebla la presencia de 32 especies y un híbrido de licofitas y helechos, la mayoría de las cuales pertenecen a las familias Pteridaceae, Dryopteridaceae y Aspleniaceae, crecen en bosque mesófilo de montaña y vegetación derivada de bosque tropical perennifolio, entre 250 y 2500 m de altura.Conclusiones: Los nuevos registros incrementan de 335 a 367 el número de especies de licofitas y helechos que habitan en el estado de Puebla y ponen en evidencia la necesidad de continuar con el trabajo de exploración en la entidad.Palabras clave: bosque mesófilo de montaña, bosque tropical perennifolio, pteridofitas, riqueza, tipo de vegetación.Abstract:Background and Aims: There are few published floristic contributions about the lycophytes and ferns (pteridophytes) from Puebla, so it is considered very likely that the specific richness of this group in the state is greater than what has been documented currently. The goal of this paper is to document the new records of this plant group for the state, including information about their municipal and altitudinal distribution and the type of vegetation they inhabit.Methods: Between 2010 and 2018, several collection trips to different localities of the state of Puebla were made to collect specimens of lycophytes and ferns. The material was identified and deposited in the Herbarium of the Universidad Autónoma Metropolitana-Iztapalapa (UAMIZ). The information obtained was compared with the list of species of Puebla reported in the literature, allowing recognition of the new records.Key results: The presence of 32 species and a hybrid of lycophytes and ferns was documented for the first time for Puebla, most of which belong to the families Pteridaceae, Dryopteridaceae and Aspleniaceae, growing in cloud forest and vegetation derived from tropical evergreen forest, betweenelevations of 250 and 2500 m.Conclusions: The new records increase the number of species of lycophytes and ferns reported for Puebla from 335 to 367 and highlight the need to continue with the exploration and field work in the state.Key words: cloud forest, pteridophytes, richness, tropical evergreen forest, vegetation type.

scholarly journals Las plantas vasculares endémicas de la Sierra Madre del Sur, México

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Juvenal Aragón-Parada ◽  
Aarón Rodríguez ◽  
Guadalupe Munguía-Lino ◽  
José Arturo De-Nova ◽  
María Magdalena Salinas-Rodríguez ◽  
...  
Keyword(s):  
Sierra Madre ◽  
Sierra Madre Del Sur ◽  
Bosque Mesófilo De Montaña

Antecedentes: La Sierra Madre del Sur (SMS) se ubica paralela al Océano Pacífico, desde Jalisco a Oaxaca. Es la provincia más biodiversa de México, con 7,016 especies de plantas vasculares. Preguntas: ¿Cuántas y cuáles son las plantas vasculares endémicas de la SMS y en qué tipos de vegetación habitan? ¿Cuántos se encuentran en alguna categoría de riesgo? Especies de estudio: Las plantas vasculares endémicas. Sitio y años de estudio: Provincia biogeográfica SMS, México; de 2016 a 2020. Métodos: Se generó una base de datos a partir de información de herbarios, bases de datos electrónicas y literatura especializada. Resultados: Se registraron 1,133 especies, agrupadas en 370 géneros y 91 familias; de estas últimas destacaron con un mayor número de géneros y especies Asteraceae (75 y 250, respectivamente), Orchidaceae (40, 123), Rubiaceae (22, 74), Bromeliaceae (5, 64) y Lamiaceae (10, 63). Los géneros con mayor riqueza fueron Salvia (46), Ageratina (39), Tillandsia (37) y Echeveria (29). Se registraron 15 géneros endémicos y 129 especies se reportaron en alguna categoría de riesgo. En la SMS el bosque de coníferas y encino registraron 828 especies, seguido del bosque mesófilo de montaña (235) y el bosque tropical caducifolio (114). Conclusiones: El endemismo en la SMS es heterogéneo, ya que se localizó en los bosques de coníferas y encino de las subprovincias Sierra Madre del Sur Oriental (estados de Guerrero y Oaxaca) y en la Sierra Madre del Sur Occidental (estado de Jalisco).

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

2019 ◽  
Vol 85 ◽  
pp. 31
Author(s):  
Ana Luisa Santiago Pérez ◽  
Enrique José Jardel Peláez ◽  
Ramón Cuevas Guzmán ◽  
Francisco Martín Huerta Martínez
Keyword(s):  
Cloud Forest ◽  
Canopy Cover ◽  
Biosphere Reserve ◽  
Basal Area ◽  
Soil Condition ◽  
Forest Edge ◽  
Pine Forests ◽  
Edge Type ◽  
Bosque Mesófilo De Montaña ◽  
Sierra De Manantlán

<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 &lt;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>

scholarly journals Avifauna de los Pueblos Santos de la Sierra Madre del Sur de Guerrero: análisis de la riqueza y recambio taxonómico entre tipos de vegetación

2018 ◽  
Vol 34 (1) ◽  
Author(s):  
Pablo Sierra Morales ◽  
Edson A. Álvarez Álvarez ◽  
R. Carlos Almazán-Núñez ◽  
Javier Jiménez Hernández ◽  
Alfredo Méndez Bahena
Keyword(s):  
La Selva ◽  
Sierra Madre ◽  
Sierra Madre Del Sur ◽  
Bosque Mesófilo De Montaña

La Sierra Madre del Sur es una región biológicamente importante por sus altos niveles de riqueza y endemismo. En las últimas dos décadas ha aumentado la presión sobre sus recursos naturales, lo que pone en riesgo su biodiversidad. En este estudio se analizó la biodiversidad de las aves de los Pueblos Santos de la Sierra Madre del Sur en el estado de Guerrero y se evaluó el recambio de especies entre los principales tipos de vegetación presentes: bosque mesófilo de montaña, bosque de pino-encino, bosque de encino-pino, selva mediana subcaducifolia y selva baja caducifolia. El trabajo de campo se realizó en 11 meses repartidos del 2006 al 2012. La información de las especies se obtuvo mediante registros visuales, auditivos y captura de ejemplares. Las aves se categorizaron por su estatus estacional, endemismo y categoría de riesgo. Se registró un total de 136 especies de aves agrupadas en 34 familias y 15 órdenes. El bosque mesófilo de montaña presentó la mayor riqueza de especies (70 especies), seguido del bosque de encino-pino (59), selva baja caducifolia (54), bosque de pino-encino (46) y selva mediana subcaducifolia (24). En el bosque mesófilo de montaña se encontró el mayor número de especies residentes (64 especies) y en la selva baja caducifolia el mayor número de migratorias (12 especies). Se registraron 15 especies endémicas a México y cuatro cuasiendémicas, de las cuales la selva baja caducifolia presentó el mayor número de especies. Se registraron nueve especies amenazadas y nueve en protección especial. El bosque mesófilo de montaña presentó el mayor número de especies en riesgo (16 especies). Existió una mayor similitud en la composición de aves entre el bosque mesófilo de montaña y el bosque de pino-encino, mientras que la selva baja caducifolia presentó la mayor diferencia con relación a los otros tipos de vegetación. En términos de la relación riqueza-área, la biodiversidad de aves y la riqueza de endemismos en los Pueblos Santos es alta. Esta avifauna, así como los tipos de vegetación que ocupan en la región requerirán de estrategias de manejo y conservación para asegurar su permanencia a largo plazo.

scholarly journals Structural characterization of the trees of a forest ejido of northwest Mexico

2017 ◽  
Vol 23 (3) ◽  
pp. 137-146
Author(s):  
Gabriel Graciano Avila ◽  
Eduardo Alanís Rodríguez ◽  
Óscar Alberto Aguirre Calderón ◽  
Marco Aurelio González Tagle ◽  
Eduardo Javier Treviño Garza ◽  
...  
Keyword(s):  
Basal Area ◽  
Crown Diameter ◽  
Northwest Mexico ◽  
Crown Cover ◽  
Importance Index ◽  
Composition And Structure ◽  
Sierra Madre ◽  
Normal Diameter ◽  
Index Value

The objective of this study was to characterize the composition and structure of a forest ejido in the state of Durango. To this end, 10 sampling sites of 2500 m2 were established, within which a census was conducted of all tree species. On each individuals measurements of normal diameter (d1,30), total height (h), of crown diameter (dcopa) were made and the species to which each individual belonged was recorded. For each species the index of value importance family (IVIF), index of value importance (IVI), index value forestry were obtained and the total volume calculated. The Shannon (H´) and Margalef indices (DMG) were also calculated. In total 13 species, five genders and five families were recorded. This forest area had a density of 787 ind ha-1, a dominance (basal area) 22,93 m2 ha-1 and a crown cover of 8838 m2 ha-1. Pinus durangensis had the highest value of importance index with 35,69% of IVIrel and the largest value forestry index with 48,96% IVFrel. With all of the above, quantitative elements of the timberline in a heterogeneous forest of the Sierra Madre Occidental were provided.

scholarly journals Estructura, composición florística y diversidad de especies leñosas de un bosque mesófilo de montaña en la Sierra de Manantlán, Jalisco

2017 ◽  
pp. 17
Author(s):  
Enrique Valente Sánchez-Rodríguez ◽  
Lauro López-Mata ◽  
Edmundo García-Moya ◽  
Ramón Cuevas-Guzmán
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Forest Structure ◽  
Cloud Forest ◽  
Basal Area ◽  
Floristic Composition ◽  
Importance Value ◽  
Transitional Forest ◽  
Bosque Mesófilo De Montaña ◽  
Sierra De Manantlán

In this paper we describe the structure, floristic composition and woody (tree and shrub) species diversity of a cloud forest at Cuzalapa, Sierra de Manantlán, Jalisco. Two localities with four 2,500 m2 plots each were established at El Durazno and La Pareja. All species present in the plots were identified and recorded, and their diameters at breast height (DBH ≥ 3cm) and heights measured. Forest structure is described using the relative values of density and basal area; in addition, a diagram  of forest profile was drawn for each plot. Among-plot similarity was assessed with Sørensen 's Index. Species diversity was evaluated using Shannon-Wiener 's, Simpson's, and Fisher's α indexes. In the total sampled area (2 ha) 2,086 individuals  belonging to 101 species (including two new records for the flora de la Sierra de Manantlán, Sapranthus foetidus and AIchornea  latifolia), distributed in 75 genera and 44 farnilies, were recorded. The families with the largest numbers of species were:  Leguminosae (8), Solanaceae and Fagaceae (7 each), Moraceae and Compositae (6 each), Lauraceae (5), and Rubiaceae (3).  Tree density at El Durazno and La Pareja was 1,084 and 1,002 trees ha-', and basal area was 38.7 and 31.9 m2 ha-', respectively.  At both localities, Styrax radians had the highest relative importance value. Forest structure and species composition at both  localities correspond to tracks of transitional forest between early to intermediate stages, which results from recurrent anthro- pogenic disturbances such as logging 50 years ago. Species diversity in Cuzalapa is one of the highest ever recorded for cloud  forests of Mexico, which presumably is a consequence of anthropogenic and natural disturbances. Both kind of disturbances  are important forces in maintaining the structure, species composition, and high species diversity in this cloud forest.

A new species of Charadrahyla (Anura: Hylidae) from the cloud forest of western Oaxaca, Mexico

Zootaxa ◽  
2019 ◽  
Vol 4554 (2) ◽  
pp. 371 ◽  
Author(s):  
VÍCTOR H. JIMÉNEZ-ARCOS ◽  
RAFAEL ALEJANDRO CALZADA-ARCINIEGA ◽  
LIZ A. ALFARO-JUANTORENA ◽  
LEOPOLDO D. VÁZQUEZ-REYES ◽  
CHRISTOPHER BLAIR ◽  
...  
Keyword(s):  
New Species ◽  
Cloud Forest ◽  
Phylogenetic Analyses ◽  
Large Body ◽  
Adult Males ◽  
Unique Character ◽  
Sierra Madre ◽  
Sierra Madre Del Sur ◽  
Internal Relationships ◽  
A New Species

A new species of treefrog from the genus Charadrahyla is described from the cloud forest of western Sierra Madre del Sur of Oaxaca, Mexico. Charadrahyla sakbah sp. nov., is distinguished from the rest of the species in the genus by the large body size (81.15–85.75 mm and 67.91–73.21 mm in adult females and males respectively), axillary membrane, adult males with hypertrophied webbings between toes I and II, nuptial excrescences, one enlarged conical tubercle on either side of vent, vocal slits absent, and sexual dimorphism in the snout shape in dorsal profile (rounded and acuminate in females and males respectively). The hypertrophied webbings are a unique character among other hylids of Middle America, and are only present in C. trux, C. tecuani and the species described herein. These three species inhabit the cloud forest of the Sierra Madre del Sur, and are probably closely related. However, more detailed phylogenetic analyses are needed to define the internal relationships of the genus. The cloud forest in the Sierra Madre del Sur continues to be known for a high number of endemic species. However, the cloud forest faces several threats due to its limited distribution that make it a priority ecosystem for conservation. 

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