Plant genotypic diversity and environmental stress interact to negatively affect arthropod community diversity Export

@article{citeulike:5518227, abstract = {Abstract\ \ Many studies have found positive relationships between plant diversity and arthropod communities, but the interactive effects of plant genetic diversity and environmental stress on arthropods are not well documented. In this study, we investigated the consequences of plant genotypic diversity, watering treatment, and its interaction for the ground-dwelling arthropod community in an experimental common garden of quaking aspen (Populus tremuloides Michx.). We found that varying plant genotypic diversity and watering treatment altered multivariate arthropod community composition and structure. Arthropod biodiversity and richness showed a distinct response to the plant diversity\ ×\ watering treatment interaction, declining sharply in water-limited genotypic mixtures. Abundance of arthropod functional groups did not show any response to diversity or the plant diversity\ ×\ watering treatment interaction, but varied in their response to watering treatment, with predator and detritivore abundance increasing and parasitoid abundance decreasing in well-watered blocks. Our results conflict with most previous studies, and suggest that environmental stress can substantially change the nature of the plant-arthropod diversity relationship. Additionally, we suggest that the plant-arthropod diversity relationship is dependent on the type of plant and arthropod species sampled, and that the association between tree diversity and ground-dwelling arthropods may be much different than more commonly studied grassland species and herbivorous arthropods.}, author = {Kanaga, Megan and Latta, Leigh and Mock, Karen and Ryel, Ronald and Lindroth, Richard and Pfrender, Michael}, citeulike-article-id = {5518227}, citeulike-linkout-0 = {http://dx.doi.org/10.1007/s11829-009-9073-8}, citeulike-linkout-1 = {http://www.springerlink.com/content/5210kp1u30476953}, day = {1}, doi = {10.1007/s11829-009-9073-8}, journal = {Arthropod-Plant Interactions}, keywords = {arthropod, community, diversity, environment, genotype, populus, stress}, month = {December}, number = {4}, pages = {249--258}, posted-at = {2009-11-02 15:42:38}, priority = {2}, title = {Plant genotypic diversity and environmental stress interact to negatively affect arthropod community diversity}, url = {http://dx.doi.org/10.1007/s11829-009-9073-8}, volume = {3}, year = {2009} }

TY - JOUR ID - citeulike:5518227 L3 - citeulike-article-id:5518227 N2 - Abstract  Many studies have found positive relationships between plant diversity and arthropod communities, but the interactive effects of plant genetic diversity and environmental stress on arthropods are not well documented. In this study, we investigated the consequences of plant genotypic diversity, watering treatment, and its interaction for the ground-dwelling arthropod community in an experimental common garden of quaking aspen (Populus tremuloides Michx.). We found that varying plant genotypic diversity and watering treatment altered multivariate arthropod community composition and structure. Arthropod biodiversity and richness showed a distinct response to the plant diversity × watering treatment interaction, declining sharply in water-limited genotypic mixtures. Abundance of arthropod functional groups did not show any response to diversity or the plant diversity × watering treatment interaction, but varied in their response to watering treatment, with predator and detritivore abundance increasing and parasitoid abundance decreasing in well-watered blocks. Our results conflict with most previous studies, and suggest that environmental stress can substantially change the nature of the plant-arthropod diversity relationship. Additionally, we suggest that the plant-arthropod diversity relationship is dependent on the type of plant and arthropod species sampled, and that the association between tree diversity and ground-dwelling arthropods may be much different than more commonly studied grassland species and herbivorous arthropods. IS - 4 JF - Arthropod-Plant Interactions EP - 258 TI - Plant genotypic diversity and environmental stress interact to negatively affect arthropod community diversity VL - 3 SP - 249 KW - arthropod KW - community KW - diversity KW - environment KW - genotype KW - populus KW - stress AU - Kanaga, Megan AU - Latta, Leigh AU - Mock, Karen AU - Ryel, Ronald AU - Lindroth, Richard AU - Pfrender, Michael PY - 2009/12/01/ UR - http://dx.doi.org/10.1007/s11829-009-9073-8 ER -