title: Ground Spider Guilds and Functional Diversity in Native Pine Woodlands and Eucalyptus Plantations.
abstract: Vegetation structure and floristics have a strong influence on the relative abundance of spider guilds and functional diversity of terrestrial arthropods. Human activities have transformed much of the temperate woodlands. The aim of this study was to test five predictions related to the guild distribution and functional diversity of the ground spider communities of Eucalyptus plantations and native pine woodlands in western Mexico. Spiders were collected every fortnight from September to November from 15 pitfalls positioned in each of the eight sites. We also assessed the cover of grasses, herbs, shrubs, and leaf litter in each site. We found that the abundances of ground hunters and sheet weavers between plantations and pine woodlands were different. Nevertheless, there was not a consistent difference between sites of each of the vegetation types. Most species of ground hunters, sheet web weavers, and many other hunters were associated with litter and the grass cover. Nonetheless, in some cases, species of different families belonging to the same guild responded to different variables. Wolf spiders were related to the grass Aristida stricta Micheaux, 1803, while the species of the other families of ground hunters were associated with leaf litter. One Eucalyptus plantation and one pine woodland had the highest functional diversity of all sites. These sites have a well developed litter and grass cover. Our study suggests that the abundance of litter and a high cover of grasses explain the occurrence of species with different traits, and these habitat components results in a high functional diversity.
authors.affiliation: Departamento de Biología, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186. Col. Vicentina, Iztapalapa, C.P. 09340, México D.F., México (pcmr@xanum.uam.mx; plvp@xanum.uam.mx; biodelarosane@gmail.xom), pcmr@xanum.uam.mx.
authors.forename: Pablo
authors.initials: P
authors.lastname: Corcuera
authors.affiliation: Departamento de Biología, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186. Col. Vicentina, Iztapalapa, C.P. 09340, México D.F., México (pcmr@xanum.uam.mx; plvp@xanum.uam.mx; biodelarosane@gmail.xom).
authors.forename: Pedro Luis
authors.initials: PL
authors.lastname: Valverde
authors.affiliation: Centro de Investigaciones Biológicas del Noroeste, Baja California Sur, México (ljimenez04@cibnor.mx).
authors.forename: María Luisa
authors.initials: ML
authors.lastname: Jiménez
authors.affiliation: Centro Nacional de Investigación Disciplinaria en Conservación y Mejoramiento de Ecosistemas Forestales, INIFAP, México, D.F, México (aponce73pm@gmail.com), and.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Ponce-Mendoza
authors.affiliation: Departamento de Biología, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186. Col. Vicentina, Iztapalapa, C.P. 09340, México D.F., México (pcmr@xanum.uam.mx; plvp@xanum.uam.mx; biodelarosane@gmail.xom).
authors.forename: Gabriela
authors.initials: G
authors.lastname: De la Rosa
authors.affiliation: Instituto de Ecología de la Universidad de Mar, Puerto Escondido, Oaxaca, México (irmanieto@zicatela.umar.mx).
authors.forename: Gisela
authors.initials: G
authors.lastname: Nieto
mesh_terms: D000818:Animals; D044822:Biodiversity; D005052:Eucalyptus / Q000254:growth & development; D065928:Forests; D058865:Introduced Species; D008800:Mexico; D028223:Pinus / Q000254:growth & development; D013112:Spiders / Q000502:physiology*
keywords: guild; microhabitat use; native woodland; tree plantation; vegetation structure