Examinando por Materia "Fragmentation"
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Publicación Acceso abierto Diversidad florística y fragmentación del bosque seco tropical en la subregión Bajo Sinú - Córdoba, Colombia(2020-11-13) Saab Ramos, Heidy Paola; Ruiz Vega, RosalbaThe tropical dry forest (TDF) is considered an ecosystem with conservation priorities; Due to its degradation, fragmentation, anthropic pressures and ignorance, it is one of the most threatened ecosystems. This study was carried out in three dry forest fragments in the Bajo Sinú subregion of the department of Córdoba, with the objective of determining the diversity, composition and floristic structure, estimating the state of fragmentation of the ecosystem and the relationship of the shape and size of polygons with floristic variables. The methodology of Rapid Vegetation Sampling Plots - modified RAP and cartographic methods for landscape measurements were followed. High diversity and a high number of species were evidenced. A total of 2,178 individuals were registered (59 families, 151 genera, 226 species). The families in order of richness were Fabaceae, Rubiaceae, Bignoniaceae and Sapindaceae; the highest abundance was found in Fabaceae, Capparaceae and Bignoniaceae, and in the Astronium graveolens Jacq species. and Capparidastrum frondosum (Jacq.) Cornejo & Iltis. The genera Machaerium, Trichilia and Randia represent the largest number of species. The distribution by diameter and altimetric classes presented an inverted J behavior. Shrubs represented the dominant growth habit. The state of fragmentation categorizes the Lower Sinú dry forest as insularized and discontinuous, with polygons frequently of rounded shapes. The size of the fragment showed a directly proportional relationship with diversity. This project managed to consolidate information on the current state of the dry forest in Córdoba, which contributes to its assessment, conservation, management and comprehensive management.Publicación Acceso abierto Efecto de la fragmentación del paisaje sobre la diversidad de mamíferos terrestres en la vereda El Diamante, Tierralta - Córdoba(2020-11-10) Romero Oviedo, María José; Martínez Bravo, Caty MilenaFragmentation processes are mainly caused by changes in land use in natural ecosystems, which generates changes in the distribution, reproduction and survival of biodiversity. The objective of this study was to record the effect of landscape fragmentation on the diversity of terrestrial mammals in the village of El Diamante, Tierralta - Córdoba. The work was carried out in forest covers with 3 levels of fragmentation: high, medium and low. Data collection was done using the methodology proposed by Steenmans and Pinborg (1999), for the indicators of fragmentation and trapping in mammalian diversity. 119 records of land mammals were generated, belonging to 9 species, distributed in 5 orders and 8 families. The greatest diversity of terrestrial mammals was obtained in the low fragmentation covers.Publicación Sólo datos Roadkill hotspots in a protected area of Cerrado in Brazil: planning actions to conservation(Universidad de Córdoba, 2016-05-02) Saranholi, Bruno H; Bergel, Mariano M; Ruffino, Paulo HP; Rodríguez-C, Karen G; Ramazzotto, Lucas A; de Freitas, Patrícia D; Galetti Jr, Pedro M