Publicación: Redes de interacción planta-animal en hábitats esteparios. Biocenosis asociada a yesos en las zonas esteparias de Monegros sur
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2022
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info:eu-repo/semantics/openAccess
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Universidad Nacional de Educación a Distancia (España). Facultad de Ciencias
Resumen
El presente trabajo analiza las redes de interacción entre plantas vasculares y artrópodos en un hábitat estepario. Para ello hemos utilizado la información recopilada en el Inventario de la biocenosis asociada a yesos en zonas esteparias de Monegros sur, realizado por Javier Blasco Zumeta. Este inventario fue realizado a partir de muestreos basados en plantas que habían tenido un esfuerzo de muestreo similar e importante. Con la relación de estas especies, confeccionamos una matriz planta-animal, donde las conexiones entre ellas corresponden a las interacciones. A partir de la matriz realizamos gráficos bipartitos que nos permiten visualizar patrones en la red de interacciones. Verificamos la asimetría y el anidamiento de la red que nos confirma que hay unas pocas especies que agrupan muchas interacciones, mientras que la mayoría tienen pocas interacciones. También se identificaron qué especies son más generalistas y cuales más especialistas. Juniperus thurifera resultó ser la planta con más interactuantes, por lo que se podría considerar fundamental en el ecosistema, como proporcionadora de numerosos nichos ecológicos para los artrópodos. Verificamos que las especies especialistas tienden a relacionarse con especies generalistas, mientras que las especies generalistas tienden a relacionarse con generalistas aunque detectamos la excepción en dos plantas catalogadas como de interés especial y vulnerable en Aragón (Boelum Asperum y Kraskeninnikovia ceratoides). Los meses de mayo y junio resultaron ser los de mayor intensidad para las interacciones, coincidiendo con la época de floración de la mayoría de las plantas. El análisis matemático de la matriz nos indica que es una red con una baja conectancia, asimetría muy alta y un fuerte anidamiento. La comparativa de la conectancia calculada, con la de otros trabajos publicados, también confirma la alta especialización. Concluimos que el ecosistema tiene una alta riqueza específica y que tiene una alta cohesión, dependiente en gran medida de las especies grandes conectadoras sobre las que se construye la red de interacciones.
The present work analyzes the interaction network between vascular plants and arthropods in a steppe habitat. We have used the information compiled in the Inventory of the biocenosis associated with gypsum in steppe areas of southern Monegros, carried out by Javier Blasco Zumeta. This inventory was made from sampling centered on plants that had had a similar and important sampling effort. With the species list, we make a plant-animal matrix, where the conexions between them correspond to the interactions. From the matrix we built bipartite graphs that allow us to visualize patterns in the interaction network. We verify the asymmetry and nestedness of the network which confirms that there are a few species that concentrate many interactions, while the majority have few interactions. We also identified which species are more generalists and which are more specialists. Juniperus thurifera turned out to be the plant with the most interactants, so it could be considered essential in the ecosystem, as a provider of numerous ecological niches for arthropods. We verified that specialist species tend to be related to generalist species, while generalist species are related to generalists although we detected the exception in two plants classified as of special interest and vulnerable in Aragon (Boelum Asperum and Kraskeninnikovia ceratoides). May and June turned out to be the most intense for the interactions, coinciding with the flowering season of most of the plants. The mathematical analysis of the matrix tells us that it is a network with low connectance, highly asymmetric and of strong nestedness. The comparison of the calculated connectance, with other published works, also confirms the high specialization. We come to the conclusion that the ecosystem has a high specific richness and that it has a high cohesion, largely dependent on the hub species on which the interaction network is built.
The present work analyzes the interaction network between vascular plants and arthropods in a steppe habitat. We have used the information compiled in the Inventory of the biocenosis associated with gypsum in steppe areas of southern Monegros, carried out by Javier Blasco Zumeta. This inventory was made from sampling centered on plants that had had a similar and important sampling effort. With the species list, we make a plant-animal matrix, where the conexions between them correspond to the interactions. From the matrix we built bipartite graphs that allow us to visualize patterns in the interaction network. We verify the asymmetry and nestedness of the network which confirms that there are a few species that concentrate many interactions, while the majority have few interactions. We also identified which species are more generalists and which are more specialists. Juniperus thurifera turned out to be the plant with the most interactants, so it could be considered essential in the ecosystem, as a provider of numerous ecological niches for arthropods. We verified that specialist species tend to be related to generalist species, while generalist species are related to generalists although we detected the exception in two plants classified as of special interest and vulnerable in Aragon (Boelum Asperum and Kraskeninnikovia ceratoides). May and June turned out to be the most intense for the interactions, coinciding with the flowering season of most of the plants. The mathematical analysis of the matrix tells us that it is a network with low connectance, highly asymmetric and of strong nestedness. The comparison of the calculated connectance, with other published works, also confirms the high specialization. We come to the conclusion that the ecosystem has a high specific richness and that it has a high cohesion, largely dependent on the hub species on which the interaction network is built.
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Categorías UNESCO
Palabras clave
redes ecológicas, interacción, especies generalistas, especies especialistas, estepa, Monegros, plantas vasculares, artrópodos, ecological network, interaction, generalist species, specialist species, steppe, vascular plants, arthropods
Citación
Centro
Facultad de Ciencias
Departamento
Física Matemática y de Fluídos