scholarly journals Local deforestation patterns and their driving forces of tropical dry forest in two municipalities in Southern Oaxaca, Mexico (1985-2006)

2016 ◽  
Author(s):  
L. Galicia ◽  
R. Corona ◽  
J. L. Palacio-Prieto ◽  
Matias Bürgi ◽  
Anna Hersperger
Keyword(s):  
Driving Forces ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
La Selva

<p>La selva baja caducifolia es un ecosistema que está presentando grandes cambios. A pesar que a nivel global se han estudiado las fuerzas conductoras del cambio de uso de suelo, a escala local las dinámicas espacio-temporales son ampliamente desconocidas. El objetivo principal de este estudio fue identificar las fuerzas conductoras de los cambios de uso y coberturas del suelo en la selva baja caducifolia en dos municipios al Sur de México. Para alcanzar dicho objetivo fueron utilizadas imágenes satelitales y fotografías aéreas dentro de un SIG, para producir los mapas de uso y de coberturas del suelo para los años 1985, 1995 y 2006. Diferentes métodos estadísticos (cadenas de Markov, modelos lineales generalizados y análisis por regresión de árbol) fueron empleados para identificar las causas próximas y subyacentes de la deforestación, donde resalta la agricultura como la más importante de ellas. Las actividades agrícolas, principalmente la de autoconsumo están delimitadas espacialmente por las características topográficas del terreno. El incremento de las oportunidades de trabajo vinculadas con el sector turístico han resultado en el abandono de las actividades agropecuarias, favoreciendo al regeneración y recuperación del bosque. En México diferentes estudios han examinado las dinámicas locales de la deforestación y las fuerzas conductoras, sin embargo, este estudio considera tanto la escala espacial como la temporal fueron claves para identificar las causas subyacentes más importantes de la deforestación, la dinámicas a escala local y la comparación entre dos municipios vecinos.</p>

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 La selva baja caducifolia en una corriente de lava volcánica en el centro de Veracruz: lista florística de la flor vascular

2017 ◽  
pp. 77
Author(s):  
Gonzalo Castillo-Campos ◽  
Patricia Dávila-Aranda ◽  
José Alejandro Zavala-Hurtado
Keyword(s):  
Volcanic Activity ◽  
Vascular Plants ◽  
Growth Form ◽  
Tropical Dry Forest ◽  
The State ◽  
Dry Forest ◽  
La Selva ◽  
Diverse Families ◽  
Forest Flora ◽  
Rock Formations

Currently, the tropical dry forest found on rock formations originating from volcanic activity are the best preserved, but also the least studied in the State of Veracruz, Mexico. We recorded 104 families comprising 394 genera and 666 species and subspecies of vascular plants. These latter taxa were classified in the following growth form categories: 88 trees, 126 shrubs, 342 herbs, 80 vines and 30 epiphytes. The richest families, considering the recorded species, were Fabaceae, Poaceae, Asteraceae and Euphorbiaceae. The presence of a rich succulent component in the tropical dry forest flora was noticeable. It is conformed by 204 species and subspecies, corresponding to 30.4% of the total for such vascular taxa recorded in the study area. The highest ichness of succulent species was found in the most diverse families, such as Euphorbiaceae, Orchidaceae, Cactaceae, and Bromeliaceae.

scholarly journals Hymenochaete cifuentesii, H. potosina, and H. raduloides spp. nov. from the tropical dry forest of Mexico

Mycotaxon ◽  
2018 ◽  
Vol 133 (3) ◽  
pp. 499-512 ◽  
Author(s):  
Magdalena Contreras-Pacheco ◽  
Ricardo Valenzuela ◽  
Tania Raymundo ◽  
Leticia Pacheco
Keyword(s):  
Tropical Dry Forest ◽  
Dry Forest

Dynamic seed zones to guide climate-smart seed sourcing for tropical dry forest restoration in Colombia

2021 ◽  
Vol 490 ◽  
pp. 119127
Author(s):  
Tobias Fremout ◽  
Evert Thomas ◽  
Kelly Tatiana Bocanegra-González ◽  
Carolina Adriana Aguirre-Morales ◽  
Anjuly Tatiana Morillo-Paz ◽  
...  
Keyword(s):  
Forest Restoration ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Seed Zones ◽  
Dry Forest Restoration ◽  
Seed Sourcing

scholarly journals Spondias tuberosa Arruda (Anacardiaceae), a threatened tree of the Brazilian Caatinga?

2016 ◽  
Vol 77 (3) ◽  
pp. 542-552 ◽  
Author(s):  
J. Mertens ◽  
J. Germer ◽  
J. A. Siqueira Filho ◽  
J. Sauerborn
Keyword(s):  
Tropical Dry Forest ◽  
Threat Assessment ◽  
Red List ◽  
Dry Forest ◽  
International Union ◽  
Population Decrease ◽  
Domestic Ruminants ◽  
Spondias Tuberosa ◽  
Iucn Assessment ◽  
Additional Income

Abstract Spondias tuberosa Arr., a fructiferous tree endemic to the northeast Brazilian tropical dry forest called Caatinga, accounts for numerous benefits for its ecosystem as well as for the dwellers of the Caatinga. The tree serves as feed for pollinators and dispersers as well as fodder for domestic ruminants, and is a source of additional income for local smallholders and their families. Despite its vantages, it is facing several man-made and natural threats, and it is suspected that S. tuberosa could become extinct. Literature review suggests that S. tuberosa suffers a reduced regeneration leading to population decrease. At this juncture S. tuberosa cannot be considered threatened according to the International Union for Conservation of Nature Red List Categories and Criteria, as it has not yet been assessed and hampered generative regeneration is not considered in the IUCN assessment. The combination of threats, however, may have already caused an extinction debt for S. tuberosa. Due to the observed decline in tree density, a thorough assessment of the S. tuberosa population is recommended, as well as a threat assessment throughout the entire Caatinga.

Unraveling the drivers of plant taxonomic and phylogenetic β-diversity in a human-modified tropical dry forest

2021 ◽  
Author(s):  
Kátia F. Rito ◽  
Víctor Arroyo-Rodríguez ◽  
Jeannine Cavender-Bares ◽  
Edgar E. Santo-Silva ◽  
Gustavo Souza ◽  
...  
Keyword(s):  
Tropical Dry Forest ◽  
Dry Forest ◽  
Β Diversity

scholarly journals Relations between stomatal closure, leaf turgor and xylem vulnerability in eight tropical dry forest trees

2003 ◽  
Vol 26 (3) ◽  
pp. 443-450 ◽  
Author(s):  
T. J. BRODRIBB ◽  
N. M. HOLBROOK ◽  
E. J. EDWARDS ◽  
M. V. GUTIÉRREZ
Keyword(s):  
Stomatal Closure ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Forest Trees ◽  
Xylem Vulnerability
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