Abstract
(Palabras clave: macroartropodos edaficos, variables fisicas y quimicas del suelo, cultivos anuales, pastoreo intensivo) ABSTRACT. Soils arthropods: Relationships between faunal composition and agricultural intensification: This paper establishes and shows the relationships between the presence and density of different soil macroarthropods and some physical and chemical soil properties. Also, it shows and discus the differences between soil macroarthropods communities in sites under different uses (agriculture, livestock and naturalized grassland). The contents of organic matter and total nitrogen showed significant differences between treatments (uses). Results show that the intensity of land use affects the abundance of several groups and the community composition; the total density of organisms and their richness declined significantly in agricultural systems and both variables were higher in naturalized sites. The C/N ratio and the percentage of organic matter were the variables that best explained the distribution of macroarthropods in different uses. The canonical correlation analysis indicates that the composition and density of macroarthropods are determined by the availability of food (in a positive way) and by agricultural intensification (negatively). We postulate that a higher complexity of the herbaceous layer favors macroarthropods while a lower complexity and the soil compaction favor the surface-walkers groups. We propose a conceptual model that could be used to predict the behavior of macroarthropods assemblages under other soil conditions.
Highlights
Soils arthropods: Relationships between faunal composition and agricultural intensification: This paper establishes and shows the relationships between the presence and density of different soil macroarthropods and some physical and chemical soil properties
Results show that the intensity of land use affects the abundance of several groups and the community composition; the total density of organisms and their richness declined significantly in agricultural systems and both variables were higher in naturalized sites
The C/N ratio and the percentage of organic matter were the variables that best explained the distribution of macroarthropods in different uses
Summary
Artrópodos del suelo: Relaciones entre la composición faunística y la intensificación agropecuaria. En este trabajo se establecen y muestran las relaciones entre la presencia y densidad de distintos grupos de macroartrópodos edáficos y algunas propiedades físicas y químicas del suelo. Entre las variables físicas y químicas del suelo, sólo los contenidos de materia orgánica y nitrógeno total mostraron diferencias significativas entre los tratamientos (usos). Los resultados muestran que la intensidad de uso del suelo afecta la abundancia de varios grupos y la composición de la comunidad de macroartrópodos; la densidad total de organismos y su riqueza disminuyeron significativamente en los sistemas agrícolas y ambas variables fueron mayores en los sitios naturalizados. La relación C/N y el porcentaje de materia orgánica del suelo fueron las variables que mejor explicaron la distribución de los macroartrópodos en los diferentes usos. [Palabras clave: macroartrópodos edáficos, variables físicas y químicas del suelo, cultivos anuales, pastoreo intensivo]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
