El bosque mesófilo de la región de Puerto Soledad (Oaxaca), México: Análisis estructural

Ruiz-Jiménez, Carlos Alberto; Meave, Jorge A.; Contreras-Jiménez, José Luis

doi:10.17129/botsci.1592

Cited by 9 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Respecto a la cobertura, la comparación sólo se hizo con pocos sitios, la mayoría de ellos ubicados en México, ya que son los únicos que consignan este dato. En Teipan se obtuvo un valor de cobertura similar al reportado por Arellanes-C. (2000) para Tiltepec, Sierra Norte de Oaxaca, y casi del doble del valor reportado para Omiltemi (Meave et al, 1992); asimismo, la cobertura es muy superior al valor obtenido en Simojovel, Chiapas (Zuill y Lathrop, 1975), aunque es intermedio entre los correspondientes a dos ambientes contrastantes (ladera E y ladera O) en Puerto Soledad, Oaxaca (Ruiz-Jiménez et al, 2000).…”

Section: Resultsunclassified

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

2004

View full text Add to dashboard Cite

ECOLOGÍA as comunidades vegetales que se desarrollan bajo la influencia de niebla frecuente en las montañas del trópico húmedo, agrupadas bajo el término general "bosques tropicales montanos de niebla" (Hamilton et al.ción entre las comunidades tropicales de tierras bajas, más termófilas, y las comunidades propias de ambientes templados localizadas a mayor altitud (Beard, 1955;Whitmore, 1975;Richards, 1996). Esta transición depende de la interacción de los factores históricos, climáticos, edá-Resumen: Se analizó la estructura de la vegetación en una parcela de una hectárea de bosque mesófilo de montaña en Santo Tomás Teipan (Oaxaca, México). Considerando su ubicación marginal en el borde de una región de este tipo de vegetación en la Sierra Madre del Sur, se examinó la pregunta de si esta comunidad difería notablemente de otros bosques mesófilos propios de condiciones más adecuadas para esta formación vegetal. Cada individuo con diámetro a la altura del pecho (DAP) ≥ 2.5 cm fue ubicado en un sistema de coordenadas; además, se anotó su identidad taxonómica y se le midió la cobertura de la copa, el DAP, y las siguientes alturas: total, a la primera ramificación y a la base de la copa. Los valores obtenidos de área basal (46.41 m 2 ha -1 ), cobertura (44,247.33 m 2 ha -1 ) y densidad (1,035 ind. ha -1 ) coinciden con los intervalos reportados para los bosques lluviosos montanos bajos ("lower montane rain forests") de América tropical. Se diferenciaron dos estratos por su estructura y composición, uno inferior (2 a 11 m) y otro superior (11 a 30 m). La dominancia general correspondió a Cornus disciflora, especie del dosel superior. En la parcela se distinguieron dos condiciones topográficas: ladera baja de cañada y cima, a las que parecen asociarse características edáficas contrastantes. A pesar de que esta heterogeneidad topográfica contrasta con la homogeneidad estructural del bosque, se detectaron patrones agregados para algunas especies distribuidas preferencialmente en alguna de dichas condiciones. En términos estructurales, el bosque de Teipan es comparable con otros bosques similares, pero su diversidad es relativamente baja. Esto puede deberse a la ausencia de taxa presentes en las comunidades secas tropicales adyacentes, a diferencia de otros bosques mesófilos cuya flora se enriquece con elementos de las comunidades tropicales húmedas con las que colindan. Palabras clave: condiciones ecológicas marginales, Cornus disciflora, diversidad vegetal, estratificación del dosel, estructura de la vegetación. Abstract: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, cro...

show abstract

Section: Resultsunclassified

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

2004

View full text Add to dashboard Cite

show abstract

“…The difference in tree density between plots with and without breakpoints was not as large as that in the other forest structure variables. This is not unexpected because forests in secondary succession have greater tree density than mature forests, and thus, plots with breakpoints can be in a process of secondary succession and present higher tree density than plots without breakpoints (Meave et al, 1992; Ruiz‐Jiménez et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

Incorporating small‐scale disturbances in models of forest structure and aboveground biomass of tropical mountains

Uscanga,

Shuler,

Silva

2024

Ecosphere

View full text Add to dashboard Cite

Several efforts have been made to model forest structure and estimate global aboveground biomass (AGB) magnitude and distribution. However, AGB models still show large uncertainties, especially over tropical mountains that are difficult to survey and understudied. Although forest disturbance and land use greatly influence forest structure and AGB accumulation, they are rarely considered in forest structure and AGB models. Including the effect of forest disturbance and land use could improve model performance. In this study, we used Landsat time series analysis and forest inventory data to assess and model the effect of small‐scale disturbance and land use on tropical montane forest structure and AGB. We explored two approaches: abrupt forest change detection, using the algorithm Breaks For Additive Seasonal Trend (BFAST), and gradual vegetation change by calculating the variation of remote sensing vegetation indices over time. We found that tropical montane landscapes are very dynamic and heterogenous. Out of the 284 forest plots analyzed, 27% had abrupt disturbances at least once between 1993 and 2014, and some of them showed abrupt disturbances several times. Forest plots with abrupt disturbances exhibit statistically significant lower basal area, tree height, and AGB than plots without abrupt disturbances. Using linear mixed‐effects models, we found that the number of breakpoints, annual Normalized Difference Vegetation Index SD, and Normalized Difference Water Index minimum values over time were the most informative variables for predicting forest structure, particularly basal area (adjusted R2 = 0.61). These variables are easy to calculate and could add significant power to forest structure and AGB models. In conclusion, incorporating small‐scale disturbance to model forest structure and AGB at regional scales is feasible through the identification of recent abrupt and gradual forest change using remote sensing time series. Including recent forest disturbance variables as predictors in forest structure models can greatly improve biomass predictability and mapping in dynamic landscapes.

show abstract

“…Más que factores fisiográficos y de hábitat, el bajo número de especies compartidas entre estas parcelas parece deberse a los disturbios antropógenos a los que ha estado sometido Barranca de la Nogalera I. La similitud máxima y mínima encontradas en el presente estudio fueron semejantes a las registradas para otros bosques mesófilos de montaña Ruiz-Jiménez et al, 2000).…”

Section: El Duraznounclassified

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

et al. 2003

View full text Add to dashboard Cite

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.

show abstract

El bosque mesófilo de la región de Puerto Soledad (Oaxaca), México: Análisis estructural

Cited by 9 publications

References 4 publications

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

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

Incorporating small‐scale disturbances in models of forest structure and aboveground biomass of tropical mountains

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

Contact Info

Product

Resources

About