ABSTRACT The proposed project will experimentally test the efficacy of seed dispersal by bats and birds as compared with seed dispersal by wind in overcoming dispersal limitation of tropical trees in an intensively altered agricultural mosaic of crops, pastures, and forest remnants in Veracruz, Mexico. Recently-developed criteria for selecting late-successional species that survive well in pasture environments will be used to plant 8 half hectare ha grids of late-successional wind-dispersed 9 species and pioneer 3 species trees and 8 similar grids of late-successional 9 species and pioneer 3 species animal-dispersed trees at distances from the Los Tuxtlas forest Biological Reserve of ha and contiguous forest of ha from m into the agricultural mosaic. The initial phase will test predictions of seed rain and seedling establishment of pioneer and late-successional species from the reserve as a function of distance from the continuous forest or smaller remnants, age of maturing vegetation, and dispersal syndrome animal- or wind-dispersed of planted trees as they mature. The objective is not to restore a tropical forest ecosystem; the land surrounding planted mixed stands and existing remnants will remain intensively managed agricultural landscapes for the foreseeable future. The ultimate objective is to test means of increasing and maintaining connectance among planted stands and remnants using airborne agents of seed dispersal, and in so doing find means of increasing and maintaining faunal and floral diversity within a permanent agricultural mosaic. This is an ambitious scientific proposal with wider implications that may dwarf direct scientific objectives through the training, encouragement of a large and energized undergraduate and graduate student body.
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Items in TSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Publisher: Universidad de Oriente Press. Description: Colubrina Rich. Colubrina contains approximately 30 species of unarmed shrubs or small trees found mostly in the Americas but occurring also in Asia and Australia.
In this work the common names, ethnobotany and geographic distribution for species of the genus in Mexico are reported. A literature review was undertaken with the intent to obtain all possible information regarding the study group; likewise was realized the study of herbarium specimens, were reviewed about specimens deposited in national and international herbaria; field visits to observe natural populations in order to take notes of ecological and ethnobotanical also were carried out.
Colubrina is widely distributed in Mexico, where currently 15 species are recognized. Various species are found in 22 states of the country, growing mainly in tropical deciduous forests, tropical evergreen forests and xeric scrub but rarely also in oak or pine forests, at elevations from sea level to m.
They are known by different common names depending on the region. People use the wood as raw material for building houses or fences or as firewood; however, they also use some species as medicines and ornaments.
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Google Scholar. De un total de 46 tipos de frutos, tres abarcan Acta Bot. Augspurger, C. Morphology and dispersal potential of wind-dispersed diaspores of Neotropical trees. Barneby, R. A generic system for the synandrous Mimosaceae of the Americas.
Diversidad de frutos de los árboles del bosque tropical perennifolio de Mexico