The purpose of this study was to identify the species Trididemnum spp. as well as determining the coral species covered by this tunicate, in coral reefs of the Arrecifes de Cozumel National Park (PNAC). Three samplings were carried out, October (2018), November (2018) and July (2019), where the temporal variation...
Los estudios de la individualidad en especies animales no humanas se han ido desarrollando cada vez más desde la segunda mitad del siglo XX, en el caso de los canidos la mayoría de las investigaciones se han realizado en los perros (Canis familiaris), pero en otras especies del género como...
Biological connectivity includes two components: the structure of the landscape and the perspective of the organisms towards it. Structural connectivity refers to each element in a particular landscape with an uninterrupted spatial configuration. Functional connectivity refers to how much the landscape allows the displacement of organisms, i.e., whether the landscape...
In this work, seasonal and diel variation of abundance and size structure of the species of mojarras (Teleostei: Gerreidae) were analyzed; as well as environmental factors influencing their variation. 19 diel cycles were made (one for month); a total of 12,500 individuals were collected that corresponding to four genera and...
Organic agriculture is based on the optimal use of natural resources, which helps to increase in a natural way the biological activity of soil, without using chemical compounds that can alter the soil, crops and aquifers. Some macroalgae have been used with excellent results as soil conditioners and biostimulants in...
Con la finalidad de obtener información de la distribución, abundancia, edad crecimiento y reproducción de la lebrancha, Mugil curema, en la Laguna de Pueblo Viejo, Veracruz, se efectuaron muestreos bimestrales, durante un año, con recolectas cada dos horas en 12 ciclos nictímeros, en dos diferentes tipos de hábitat, uno con...
The vulnerability depends on the analysis of the elements that compose it: exposure, sensitivity, and recovery capacity. In this work, the use of tissue responses that have been recommended as biomarkers to measure the elements of vulnerability in the Polymesoda caroliniana clam is proposed, in addition to obtaining a histopathological...
Villa Alegría es un lacustre que forma parte de la Reserva de la Biósfera Tehuacán-Cuicatlán, Puebla-Oaxaca, que data del Plioceno-Pleistoceno, que ha sido poco estudiado; por lo que el objetivo de este trabajo fue determinar la estructura y composición florística de dos laderas con diferente exposición (L1 y L2); así...
Las anchoas son peces con importancia biológica y económica, de igual manera que los sistemas estuarino-lagunares, los cuales se caracterizan por tener una gran variabilidad ambiental. El objetivo de esta tesis fue conocer los factores responsables de las fluctuaciones temporales en la abundancia de las anchoas en la laguna costera...
Coastal lagoons are systems with high levels of productivity and a big biological diversity as a result of a high ecological complexity, due to the different environmental processes that result from seasonal, diel and tides cycles periods and to the abrupt changes of the environmental variables of these periods. The...