DISTRIBUCIÓN POTENCIAL DE Cordia dodecandra A.DC. Y SU VARIACIÓN RELACIONADA AL CAMBIO DE USO DEL SUELO EN LA PENÍNSULA DE YUCATÁN, MÉXICO

Abstract

<p><strong>Background.</strong> The study of the geographical distribution of species is very useful for understanding the patterns and processes that explain biodiversity and are raw materials for conservation planning based on the generation of maps identifying areas with a high probability of occurrence. <strong>Objective.</strong> To determine the potential distribution (PD) of <em>C. dodecandra</em> and land use variations in the Yucatan Peninsula (YP). <strong>Methodology.</strong> A Species Distribution Model (MDE) was used to find areas with suitable environmental conditions for wild populations of <em>Cordia dodecandra</em>, fifteen environmental variables were used to model the optimal conditions for the species and to create the model for PD using the MaxEnt 3.3.3k program, the georeferenced presence records available from herbaria and the data collected in the field were used to map the Known Distribution (DC) of <em>C. dodecandra</em>. The corrected PD (DPC) was calculated by incorporating the land use data obtained from INEGI into the model. <strong>Results.</strong> The PD of <em>C. dodecandra</em> in the YP was 2,501,938 hectares. The main environmental variables that affect the PD of the species were the type of climate, the precipitation of the wettest month, the precipitation of the wettest quarter and the annual precipitation. CPD decreased by 2 per cent (265,439 hectares) compared to PD. <strong>Implications.</strong> The analysis identifies areas with a high probability of finding the species, which would help to initiate projects for the development of this species aimed at its conservation. <strong>Conclusion</strong>. The areas of potential distribution with the greatest probability of presence of Siricote in the Yucatan Peninsula are: the Calakmul Biosphere Reserve, the southern and central part of the state of Yucatan and the central area of the municipality of Felipe Carrillo Puerto (Quintana Roo).</p>

Effects of seedling conspecific density and heterospecific frequency on insect herbivory in a tropical dry forest

“…There are also a number of species which are rare at the study site, including focal species C. dodecandra (Boraginaceae) and M. zapota (Sapotaceae), but are important food sources for local vertebrate fauna, including birds and mammals (Cancino, 2017) and highly valued timber species (Canché‐Collí, Rodríguez, & Canto, 2020). Both focal species have been strongly negatively impacted by illegal logging and land use change in the Yucatan Peninsula (Cámara‐Romero et al, 2021; Weterings et al, 2008) as well as at the study site (L. Abdala‐Roberts, pers. obs.…”

“…obs. ), and have undergone population reductions due to anthropogenic pressures such as logging (Cámara‐Romero, Jiménez‐Osornio, Estrada‐Medina, & Hernández García, 2021; Weterings, Weterings‐Schonck, Vester, & Calmé, 2008). A third more common species, Piscidia piscipula , was used to test for heterospecific effects on these focal species and is highly common in tropical dry forests in the northern Yucatan Peninsula (often as a dominant species; Pennington & Sarukhán, 2005) and is therefore likely to be a neighbour of the other two in understory patches across sites in the region (Pennington & Sarukhán, 2005).…”

Management and Characterization of the Mexican Karst Landscapes: Studies From the Amek

“…En relación al estudio de la biodiversidad en zonas kársticas, en el trabajo de Cámara-Romero et al (2021), "Distribución potencial de Cordia dodecandra A.D.C. y su variación relacionada al cambio de uso del suelo en la Península de Yucatán, México" los autores utilizaron registros georreferenciados disponibles, así como datos recolectados en campo de la especie con los cuales mapearon la distribución conocida; adicionalmente usaron 15 variables ambientales para aplicar a un modelo de distribución de especies (MDE) que les permitió crear un modelo de distribución potencial e incluyendo el cambio de uso de suelo identificaron la distribución potencial corregida.…”