scholarly journals Madrigueras de Liomys pictus en dos selvas tropicales del Pacífico mexicano.

2009 ◽  
Vol 13 (1) ◽  
pp. 63 ◽  
Author(s):  
Yolanda Domínguez-Castellanos ◽  
Beatriz Hernandez Meza ◽  
Angeles Mendoza D. ◽  
Gerardo Ceballos González
Keyword(s):  
Seed Production ◽  
Tropical Forests ◽  
Plant Species ◽  
Deciduous Forest ◽  
Vegetation Type ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Mexican Pacific ◽  
La Selva

Resumen: Se determinó la estructura y el contenido de las madrigueras de Liomys pictus por tipo de vegetación y temporada del año, en dos selvas tropicales del Pacífico Mexicano. Se encontraron 24 madrigueras: en la selva baja la mayoría son complejas, mientras que  en la selva mediana son lineales, por consiguiente y de acuerdo a la clasificación de las madrigueras, en selva baja se presentaron madrigueras múltiples y en selva mediana madrigueras simples. De acuerdo al contenido, las de selva baja tienen en promedio una mayor cantidad de materiales en comparación a las de selva mediana. Se catalogaron un total de 248 especies de plantas de estas 50 se comparten en ambos sitios, del total de las especies se llegaron a identificar sólo 77. Las familias más representativas fueron Leguminoseae, Euphorbiaceae y Convolvulaceae. La estructura de las madrigueras no esta determinada por la temporalidad, sin embargo el contenido esta determinado con la cantidad de material almacenado aunque la producción de semillas esta definido por el patrón de fructificación que esta dado a lo largo del año.Palabras clave: Madrigueras, estructura, contenido, Liomys pictus, Jalisco, México.Abstract: We determined the structure and contents of burrows of Liomys pictus by vegetation type and season in two tropical forests of the Mexican Pacific. 24 burrows were found in the tropical dry forest and most complex, in the semi deciduous forest is linear, and therefore according to the classification of the burrows in the tropical dry forest are more numerous and simple in the semi deciduous forest. According to the content, of the tropical dry forest have on average a greater amount of material compared to the semi deciduous forest. Were categorized a total of 248 plant species of these 50 sites are shared in both the total number of species is to determine 77. The most representative families were Leguminoseae, Euphorbiaceae and Convulvolaceae. The structure of the burrows is not affected by the timing, but the content is determined with the amount of stored material but seed production is defined by the pattern of fruit that is given throughout the year.Key words: Burrows, structure, food hoarding, Liomys pictus, Jalisco, Mexico.

scholarly journals HÁBITAT DE Hodomys alleni (RODENTIA: MURIDAE) EN LA SELVA BAJA CADUCIFOLIA EN LA REGIÓN CENTRAL DE COLIMA, MÉXICO

2015 ◽  
Vol 5 (1) ◽  
pp. 63
Author(s):  
Paulina Arias-Caballero de Miguel ◽  
Daniela Medellín ◽  
Yolanda Domínguez Castellanos ◽  
Gerardo Ceballos
Keyword(s):  
Deciduous Forest ◽  
Soil Depth ◽  
Total Sample ◽  
Dry Forest ◽  
Tree Cover ◽  
Conservation Strategies ◽  
Mexican Pacific ◽  
La Selva ◽  
Brosimum Alicastrum ◽  
Depth Feature

RESUMENSon pocas las áreas de selva baja caducifolia y selva mediana subcaducifolia en México y en este tipo de vegetación se encuentra uno de los pocos géneros monotípico de roedores, Hodomys alleni, una especie endémica de los bosques secos tropicales del Pacífico mexicano y también es una especie amenazada debido a la pérdida de su hábitat. El estudio se realizó en la selva baja de Colima, México, se capturaron 303 individuos, incluyendo 11 especies de roedores y 1 marsupial, H. alleni está representado sólo por un 17% de la muestra total. Los resultados revelaron que la distribución y selección del sitio de construcción de madrigueras de H. alleni están directamente relacionados con la profundidad del suelo, característica que resultó ser la más importante en determinar dicha selección. También se estableció una relación entre la muestra de 65 madrigueras y su ubicación en el suelo (43% huecos en el suelo, 51% en la base del árbol o tocón con materiales orgánicos y 6% entre las rocas sin material orgánico) todas estas estrechamente relacionadas con la profundidad del suelo, cubierta arbórea y área de suelo desnudo. 491 individuos de árboles fueron cuantificados constando de 60 especies. De las cuales 9 especies representan el 50% de la muestra total, siendo Acacia macilenta la especie más abundante y Albizia sp., Bursera sp., y Brosimum alicastrum las especies encontradas con mayor frecuencia alrededor de las madrigueras. Por otra parte las etapas reproductivas de H. alleni parecen estar fuertemente relacionadas con la estacionalidad (lluvias y secas), como en muchas otras especies que habitan en los bosques tropicales secos. Por otro lado, se encontraron hembras con mayor peso corporal y mayor longitud durante la estación seca y en ambas temporadas en comparación con los machos. Sin embargo, se necesitan más estudios para recopilar nueva información que pueda fortalecer nuestro objetivo de crear estrategias de conservación para estas y otras especies que dependen fuertemente de la estructura y la estacionalidad de estas pocas y frágiles selvas secas que aún perduran.Palabras clave: Hodomys alleni, selva baja, selva mediana, madrigueras, Colima.ABSTRACTFew areas of deciduous forest and deciduous tropical forest in Mexico and in this type of vegetation is one of the few monotypic genera of rodents, Hodomys alleni, an endemic species of tropical dry forests of the Mexican Pacific and is also a kind threatened due to habitat loss. The study was conducted in the lowland rainforest of Colima, Mexico, 303 individuals were captured, including 11 species of rodents and one marsupial, H. alleni is represented only 17% of the total sample. The results revealed that the distribution and site selection burrowing H. alleni are directly related to soil depth feature that proved to be the most important in determining that selection. A relationship between sample 65 burrows and its location on the ground (43% holes in the ground, 51% at the base of the tree or stump with organic materials and 6% among the rocks without organic material) was also established these closely related to soil depth, tree cover and area of bare ground. 491 trees were quantified individuals comprising 60 species. Of which 9 species represent 50% of the total sample, being the most abundant haggard Acacia and Albizia species sp., Bursera sp., and Brosimum alicastrum species most frequently found around the burrows. Moreover reproductive stages of H. alleni appear to be strongly related to the seasonality (rainy and dry), as in many other species that live in dry tropical forests. Furthermore, females have a greater and longer body weight were found in the dry season and in both seasons compared with males. However, more studies are needed to gather new information that can strengthen our goal of creating conservation strategies for these and other species that depend heavily on the structure and seasonality of these few and fragile dry forest that still survive.Key words: Hodomys alleni, deciduous forest, semi deciduous forest, burrows, Colima.

scholarly journals Mammals in tropical dry forest on the central coast of Oaxaca, Mexico

Check List ◽  
2016 ◽  
Vol 12 (2) ◽  
pp. 1862 ◽  
Author(s):  
Miguel Briones-Salas ◽  
Natalia Martín-Regalado ◽  
Mario C. Lavariega
Keyword(s):  
Deciduous Forest ◽  
Species Turnover ◽  
Tropical Dry Forest ◽  
Similarity Index ◽  
Dry Forest ◽  
Central Coast ◽  
Semideciduous Forest ◽  
Southern Mexico ◽  
Additional Information ◽  
Mammal Diversity

The tropical dry forests of Mexico are one of the world’s biodiversity hotspots. To contribute to the knowledge of mammal diversity and conservation of the central coast of Oaxaca State, southern Mexico, we conducted field surveys in the area. Additional information was obtained from literature and museum databases. In order to compare the taxonomic similitude between areas along the Planicie Costera del Pacífico province we performed a taxonomic similarity analysis using data from the literature and the present study. A total of 49 species of mammals belonging to 19 families and eight orders were recorded. The maximum number of species was recorded in deciduous forest (n = 46), followed by semideciduous forest (n = 11). The similarity index was low (<50%) between areas along the Planicie costera del Pacífico, indicating higher species turnover. The high mammal diversity, the presence of endemic (8%), threatened species (16%), and voluntary conservation areas highlight the importance of this region.

scholarly journals Tropical Dry Forest Resilience to Fire Depends on Fire Frequency and Climate

2021 ◽  
Vol 4 ◽  
Author(s):  
Maximilian Hartung ◽  
Geovana Carreño-Rocabado ◽  
Marielos Peña-Claros ◽  
Masha T. van der Sande
Keyword(s):  
Tropical Forests ◽  
Tropical Dry Forest ◽  
Remote Sensing Data ◽  
Fire Frequency ◽  
Dry Forest ◽  
Fire Disturbance ◽  
Fire Intensity ◽  
Forest Resilience ◽  
Landsat Satellite ◽  
In Fire

Wildfires are becoming increasingly frequent and devastating in many tropical forests. Although seasonally dry tropical forests (SDTF) are among the most fire-threatened ecosystems, their long-term response to frequent wildfires remains largely unknown. This study is among the first to investigate the resilience in response to fire of the Chiquitano SDTF in Bolivia, a large ecoregion that has seen an unprecedented increase in fire intensity and frequency in recent years. We used remote sensing data to assess at a large regional and temporal scale (two decades) how fire frequency and environmental factors determine the resilience of the vegetation to fire disturbance. Resilience was measured as the resistance to fire damage and post-fire recovery. Both parameters were monitored for forested areas that burned once (F1), twice (F2), and three times (F3) between 2000 and 2010 and compared to unburned forests. Resistance and recovery were analyzed using time series of the Normalized Burn Ratio (NBR) index derived from Landsat satellite imagery, and climatic, topographic, and a human development-related variable used to evaluate their influence on resilience. The overall resilience was lowest in forests that burned twice and was higher in forests that burned three times, indicating a possible transition state in fire resilience, probably because forests become increasingly adapted during recurrent fires. Climatic variables, particularly rainfall, were most influential in determining resilience. Our results indicate that the Chiquitano dry forest is relatively resilient to recurring fires, has the capacity to recover and adapt, and that climatic differences are the main determinants of the spatial variation observed in resilience. Nevertheless, further research is needed to understand the effect of the higher frequency and intensity of fires expected in the future due to climate change and land use change, which may pose a greater threat to forest resilience.

Contrasting patterns of morphology, fluctuating asymmetry and leaf herbivory in three plant species of different successional stages of a tropical dry forest

Trees ◽  
2020 ◽  
Vol 34 (4) ◽  
pp. 1075-1086
Author(s):  
Joan Sebastian Aguilar-Peralta ◽  
Antonio González-Rodríguez ◽  
Yurixhi Maldonado-López ◽  
Marcílio Fagundes ◽  
Maurício L. Faria ◽  
...  
Keyword(s):  
Plant Species ◽  
Fluctuating Asymmetry ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Successional Stages ◽  
Leaf Herbivory

Regeneration beneath a dioecious tree species (Spondias purpurea) in a Mexican tropical dry forest

2014 ◽  
Vol 30 (3) ◽  
pp. 265-268 ◽  
Author(s):  
Moisés Méndez-Toribio ◽  
Ana María González-Di Pierro ◽  
Mauricio Quesada ◽  
Julieta Benítez-Malvido
Keyword(s):  
Species Richness ◽  
Plant Species ◽  
Seedling Recruitment ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Total Density ◽  
Dioecious Plant ◽  
Nucleation Sites ◽  
The Pacific ◽  
Spondias Purpurea

Abstract:In dioecious plant species different frugivore activity between genders may influence the abundance and richness of the seedling banks underneath their canopies throughout seed removal and dispersal. In the tropical dry forest of Chamela, on the Pacific Coast of Mexico, the role of S. purpurea female trees as nucleation sites of regeneration was investigated. The standing density, species richness and dispersal syndrome of woody seedlings (i.e. trees and shrubs, 10–100 cm tall) recruited underneath and outside the canopy of 10 male and 10 female S. purpurea trees were recorded in a total of 160 1-m2 plots. Total density was greater in seedling communities associated with female trees (i.e. underneath and outside their canopies) as compared with male trees (231 vs. 153 seedlings, respectively); whereas overall species richness was greater underneath female canopies. Further, the density of zoochorous species were greater underneath the canopy of S. purpurea females (range = 0–5 plants m−2), than elsewhere (outside female canopies, range = 0–3 plants m−2; underneath and outside male canopies, range = 0–2 plants m−2), suggesting a directional dispersal bias towards them. Females of dioecious plant species may act as nucleation sites of initial seedling recruitment in tropical dry forests.

scholarly journals Characterization of Dry-Season Phenology in Tropical Forests by Reconstructing Cloud-Free Landsat Time Series

2021 ◽  
Vol 13 (23) ◽  
pp. 4736
Author(s):  
Xiaolin Zhu ◽  
Eileen H. Helmer ◽  
David Gwenzi ◽  
Melissa Collin ◽  
Sean Fleming ◽  
...  
Keyword(s):  
Time Series ◽  
Puerto Rico ◽  
Tropical Forests ◽  
Tropical Dry Forest ◽  
Dry Season ◽  
Dry Forest ◽  
High Quality ◽  
Forest Zone ◽  
Fine Resolution ◽  
Field Plots

Fine-resolution satellite imagery is needed for characterizing dry-season phenology in tropical forests since many tropical forests are very spatially heterogeneous due to their diverse species and environmental background. However, fine-resolution satellite imagery, such as Landsat, has a 16-day revisit cycle that makes it hard to obtain a high-quality vegetation index time series due to persistent clouds in tropical regions. To solve this challenge, this study explored the feasibility of employing a series of advanced technologies for reconstructing a high-quality Landsat time series from 2005 to 2009 for detecting dry-season phenology in tropical forests; Puerto Rico was selected as a testbed. We combined bidirectional reflectance distribution function (BRDF) correction, cloud and shadow screening, and contaminated pixel interpolation to process the raw Landsat time series and developed a thresholding method to extract 15 phenology metrics. The cloud-masked and gap-filled reconstructed images were tested with simulated clouds. In addition, the derived phenology metrics for grassland and forest in the tropical dry forest zone of Puerto Rico were evaluated with ground observations from PhenoCam data and field plots. Results show that clouds and cloud shadows are more accurately detected than the Landsat cloud quality assessment (QA) band, and that data gaps resulting from those clouds and shadows can be accurately reconstructed (R2 = 0.89). In the tropical dry forest zone, the detected phenology dates (such as greenup, browndown, and dry-season length) generally agree with the PhenoCam observations (R2 = 0.69), and Landsat-based phenology is better than MODIS-based phenology for modeling aboveground biomass and leaf area index collected in field plots (plot size is roughly equivalent to a 3 × 3 Landsat pixels). This study suggests that the Landsat time series can be used to characterize the dry-season phenology of tropical forests after careful processing, which will help to improve our understanding of vegetation–climate interactions at fine scales in tropical forests.

scholarly journals Accidental consumption of Atta cephalotes (Hymenoptera: Formicidae) by Artibeus lituratus (Chiroptera: Phyllostomidae)

2017 ◽  
Vol 4 (1) ◽  
pp. 25-26
Author(s):  
Sebastián Montoya-Bustamante ◽  
Natalya Zapata-Mesa
Keyword(s):  
Plant Species ◽  
Tropical Dry Forest ◽  
Psidium Guajava ◽  
Dry Forest ◽  
Atta Cephalotes ◽  
Fecal Samples ◽  
Generalist Species ◽  
Forest Remnants ◽  
Valle Del Cauca ◽  
Artibeus Lituratus

During a 6-months research carried out in the Robles village (Jamundí municipality, Valle del Cauca Department, Colombia) in 2014, bat feces were collected to determine the diet of fruit-eating bats. This study area included farms and tropical dry forest remnants, where A. lituratus was the most generalist species, with 10 different plant species recorded in its diet, including Ficus, Psidium, Mangifera, Cecropia, and Piper species (Montoya-Bustamante et al., 2016). Within two (out of 130) different fecal samples an individual of Atta cephalotes (both workers) were found associated to Psidium guajava seeds and pulp

scholarly journals Similarity in plant species consumed by goat flocks in the tropical dry forest of the Cañada, Oaxaca

2019 ◽  
Vol 10 (2) ◽  
pp. 490-505 ◽  
Author(s):  
Salvador Mandujano ◽  
Ariana Barrera-Salazar ◽  
Antonio Vergara-Castrejón
Keyword(s):  
Plant Species ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Capra Hircus ◽  
Eleusine Indica ◽  
Para Determinar

El manejo de caprinos (Capra hircus) en sistemas extensivos es una práctica común en la Reserva de la Biosfera Tehuacán-Cuicatlán (RBTC), México. En el presente estudio se analizó la similitud de las especies de plantas consumidas por los caprinos de diferentes rebaños en un paisaje de la Cañada en Oaxaca. Se siguió a ocho rebaños en diferentes localidades durante las épocas de lluvias 2012 y la de seca 2013. Para determinar la similitud espacial y temporal entre los rebaños dependiendo de las plantas consumidas, se emplearon métodos de análisis multivariado, específicamente de agrupamiento jerárquico en el programa R. Los caprinos consumieron 84 especies, de las cuales 30 constituyen el 75 % de la dieta. De acuerdo a los análisis de similitud, Mimosa sp. y Acacia cochiliacantha fueron las especies consumidas con mayor frecuencia por todos los rebaños; mientras que Eleusine indica, Prosopis leavigata y Opuntia sp. fueron las siguientes en importancia. El rebaño de la localidad Tecomovaca fue el menos similar al resto de los rebaños estudiados. Estos resultados contribuyen al entendimiento de los hábitos de forrajeo de los caprinos en región tropical seca, donde la disponibilidad de recursos es marcadamente estacional.

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