Diet and habitat preferences of the Fijian crested iguana (Brachylophus vitiensis) on Yadua Taba, Fiji: implications for conservation

2007 ◽  
Vol 55 (6) ◽  
pp. 341 ◽  
Author(s):  
Clare Morrison ◽  
Tamara Osborne ◽  
Peter S. Harlow ◽  
Nunia Thomas ◽  
Pita Biciloa ◽  
...  
Keyword(s):  
Sex Differences ◽  
Plant Species ◽  
Tree Species ◽  
Habitat Preferences ◽  
Large Population ◽  
Tropical Dry Forest ◽  
Habitat Destruction ◽  
Dry Forest ◽  
Habitat Requirements ◽  
Field Surveys

The Fijian crested iguana (Brachylophus vitiensis) is restricted to tropical dry forest habitat and has been extirpated from over 80% of its original range primarily because of habitat destruction. A large population on Yadua Taba island has been proposed as a source for iguana translocations. This study aimed to determine the dietary and habitat requirements of the herbivorous B. vitiensis on Yadua Taba to identify essential tree species. Between September 2005 and June 2006 we examined the diet of B. vitiensis using faecal analyses, while perch preferences were examined using field surveys. Faecal analyses identified 26 plant species in the diet of B. vitiensis, while field surveys recorded iguanas in 33 tree species. The most common diet species largely overlapped with the most common perch species. There were no major seasonal shifts, sex differences, or age-class variations in diet or perch preferences. These results suggest that while B. vitiensis occurs in and consumes several plant species on Yadua Taba, it is primarily dependent on only a few species. To improve translocation success, future translocations of B. vitiensis need to ensure that these important tree species are present at new sites.

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.

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

The effects of individual tree species on species diversity in a tropical dry forest change throughout ontogeny

Ecography ◽  
2015 ◽  
Vol 39 (3) ◽  
pp. 329-337 ◽  
Author(s):  
C. I. Espinosa ◽  
M. de la Cruz ◽  
A. Jara-Guerrero ◽  
E. Gusmán ◽  
A. Escudero
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Forest Change ◽  
Individual Tree

Effect of host-bark extracts on seed germination in Tillandsia recurvata, an epiphytic bromeliad

2010 ◽  
Vol 26 (6) ◽  
pp. 571-581 ◽  
Author(s):  
Susana Valencia-Díaz ◽  
Alejandro Flores-Palacios ◽  
Verónica Rodríguez-López ◽  
Elsa Ventura-Zapata ◽  
Antonio R. Jiménez-Aparicio
Keyword(s):  
Chemical Composition ◽  
Seed Germination ◽  
Tree Species ◽  
Total Phenolics ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Chemical Effect ◽  
Positive Correlation ◽  
Methanolic Extracts ◽  
Biased Distribution

Abstract:Tree species are potential hosts for epiphytes; however in some forests epiphytes have a biased distribution among hosts. In a tropical dry forest of Mexico, previous research showed that there are trees with few epiphytes. It is possible that the bark of these hosts contain allelochemicals that influence epiphyte seed germination. The aims of this study were (1) to determine whether hosts with low epiphyte abundance (Ipomoea murucoides, I. pauciflora and Lysiloma acapulcense) would inhibit seed germination of Tillandsia recurvata through aqueous and organic bark extracts, (2) to determine whether germination of T. recurvata would differ among the hosts with low epiphyte abundance and a host with high epiphyte abundance (Bursera copallifera) and (3) to relate the chemical composition of organic bark extracts with inhibition of T. recurvata seed germination. Hexanic and dichloromethanic extracts were partially chemically characterized. Total phenolics and flavonoids concentrations of methanolic extracts were analysed. Aqueous and organic bark extracts from hosts with few epiphytes inhibited T. recurvata seed germination. Aqueous and dichloromethanic extracts of B. copallifera inhibited slightly the germination of T. recurvata. There was a positive correlation between concentration of flavonoids and inhibition of seed germination. Results suggest that a combination of compounds may be responsible for affecting the germination of T. recurvata. This study demonstrates the chemical effect of aqueous and organic bark extracts from hosts on germination of an epiphytic bromeliad.

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 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.

scholarly journals Preparing seedlings for dry spells: drought acclimation in the seedlings of two tree species of a seasonal tropical dry forest

Flora ◽  
2021 ◽  
pp. 151967
Author(s):  
Jorge Roberto Blanco-Martínez ◽  
Pilar Huante ◽  
Irene Pisanty-Baruch ◽  
Alma Orozco-Segovia ◽  
Ivonne Reyes-Ortega ◽  
...  
Keyword(s):  
Tree Species ◽  
Tropical Dry Forest ◽  
Dry Forest ◽  
Drought Acclimation ◽  
Dry Spells
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