Analysis of the arthropod community of Las Amoladeras (Cabo de Gata, Almería) against the invasión of agaves.
Antonio M. Montoya Ruiz.
This work shows a preliminary evaluation of the data obtained in the framework of the LIFE Adaptamed project with the objective of quantifying the diversity of the epigean arthropoid of the jujube tree of Torregarcía and the Amoladeras. It compares the community of athropoids in areasinvaded and not invaded by two invasive alien species (Agave fourcroydes and Agave sisalana) as well as between different substrates, crust and sand. In addition, they have taken into account the collection times of the samples for the analysis of the evolution of the structure of the arthropoids in this area. The results show that the structure of the arthropoids does not vary over time, because the relatively abundance between years or months does not vary, except in two orders marginal: Zygentoma and Ephemeroptera. On the other hand, the ordersthat have been affected by the substrate have been Diptera and Araneae. For example, Coleoptera, Hemiptera and Hymenoptera have been respond negatively to the invasion. This reinforces the idea and similar in the previous work on the utility as environmental indicator of the Coleoptera Order, in the case of Hemiptera and Hymenoptera, as key elements for monitoring the restoration of this ecosystem. The decrease in the abundance of key insects such as coleoptera, may result in a decrease in certain species of predators like saurian and birds of these since the decrease in parallel monitoring of the project has been detee.
Keywords: agaves, substrate, coleoptera, hemiptera, hymenoptera, jujube, relative abundance.