A5049817939- Forest Insect Ecology and Management
- Forest Ecology and Biodiversity Studies
- Insect-Plant Interactions and Control
- Insect and Pesticide Research
- Plant and animal studies
- Fire effects on ecosystems
- Hymenoptera taxonomy and phylogeny
- Forest ecology and management
- Ecology and Vegetation Dynamics Studies
- Plant and Fungal Interactions Research
- Entomological Studies and Ecology
- Coleoptera: Cerambycidae studies
- Entomopathogenic Microorganisms in Pest Control
- Species Distribution and Climate Change
- Mycorrhizal Fungi and Plant Interactions
- Scarabaeidae Beetle Taxonomy and Biogeography
- Animal Ecology and Behavior Studies
- Plant Water Relations and Carbon Dynamics
- Tree-ring climate responses
- Botany and Plant Ecology Studies
- Plant Pathogens and Fungal Diseases
- Forest Management and Policy
- Plant and soil sciences
- Mediterranean and Iberian flora and fauna
- Remote Sensing and LiDAR Applications
Universidade de Santiago de Compostela
2012-2023
Dartmouth College
1999-2001
Xunta de Galicia
1996
The nitrogen content of plant tissue is low relative to that herbivores; as a consequence, dietary N can limit the growth and reproduction herbivores select for attributes increase acquisition. Bark beetles face particularly severe challenge because phloem they consume very in phosphorus their requirements. We quantified variation concentrations P host tree, Pinus taeda, evaluated following hypotheses regarding role symbiotic fungi nutrient budgets herbivore Dendroctonus frontalis: D....
The ecological literature abounds with studies of environmental effects on plant antiherbivore defences. While various models have been proposed (e.g. stress, optimal allocation, growth‐differentiation balance), each has met mixed support. One possible explanation for the results is that constitutive and induced defences are differentially affected by conditions. In this study, oleoresin flow from Pinus tadea was least during periods rapid tree growth most when drought conditions limited...
Summary The southern pine beetle, Dendroctonus frontalis, is among the most important agents of ecological disturbance and economic loss in forests south‐eastern United States. We combined physiological measurements insect temperature responses with climatic analyses to test role determining northern distribution limits D. frontalis. Laboratory lower lethal temperatures published records mortality wild populations indicated that air −16° should result almost 100% frontalis . for approximate...
Phoretic mites of bark beetles are classic examples commensal ectosymbionts. However, many such appear to have mutualisms with fungi that could themselves interact beetles. We tested for indirect effects phoretic on Dendroctonus frontalis , which attacks and kills pine trees in North America. Tarsonemus known carry ascospores Ophiostoma minus tends outcompete the mutualistic carried by D. . Experimental additions removals from demonstrated propagate O. beetle oviposition galleries....
We investigated the overwintering biology of four temperate-latitude bark beetles: Dendroctonus frontalis Zimmermann, Ips pini (Say), I. grandicollis (Eichhoff), and perroti Swaine. All species were freeze-susceptible. However, there was variation within among in that related to their geographic distribution. D. southern populations continued reproduce develop under host plants throughout winter did not show any seasonal adjustments lower lethal temperatures: mean supercooling point ± SD =...
Forest managers are facing unprecedented challenges from rapid changes in forest pests. The core causes climate, land use, and global distributions of organisms. Due to invasions range expansions by pests, propagation nonnative trees, increasingly confronted with pest problems outside their experience. There is a need adapt management practices more quickly efficiently than possible when work isolation mainly learn trial error. Here we identify general tactics for adaptation the...
Insect and disease outbreaks in forests are biotic disturbances that can profoundly alter ecosystem dynamics. In many parts of the world, these disturbance regimes intensifying as climate changes shifts distribution species biomes. As a result, key forest services, such carbon sequestration, regulation water flows, wood production, protection soils, conservation biodiversity, could be increasingly compromised. Despite relevance detrimental effects, there currently no spatially detailed...
Aim of study: The globally invasive gall wasp, Dryocosmus kuriphilus Yasumatsu, 1951 (Cynipidae: Cynipini), reached Spain seven years ago and is already regarded as an important pest chestnuts (Castanea spp.) in this country well worldwide. In paper, we present comprehensive data on the establishment Torymus sinensis Kamijo, 1982 (Chalcidoidea: Torymidae), effective non-native natural enemy pest, a result both dispersal settlement after controlled releases since 2015.Area Sites Spanish...
Summary 1 Dendroctonus frontalis , the southern pine beetle, is associated with a diverse community of fungi and mites that are phoretic on adult beetles. Tarsonemus ips T. kranzti fusarii (Acarina: Tarsonemidae) may interact within this in ways link population dynamics D. three dominant species fungi. We explored associations by comparing dietary suitability different for spp. 2 All mite fed reproduced at high rates when feeding bluestain fungus, Ophiostoma minus, which an antagonist...
Accelerating introductions of forest insects challenge decision-makers who might or not respond with surveillance programs, quarantines, eradication efforts, biological control programs. Comparing ecological controls on indigenous vs. introduced populations could inform responses to new introductions. We studied the European woodwasp, Sirex noctilio, which is a pest in its native forests, serious invasive southern hemisphere, and now has an uncertain future North America after introduction...
Journal Article Factors Influencing Bark Beetle Outbreaks After Forest Fires on the Iberian Peninsula Get access María J. Lombardero, Lombardero 1 2Departamento de Producción Vegetal, Universidad Santiago, 27002 Lugo, Spain. 1Corresponding author, e-mail: mariajosefa.lombardero@usc.es. Search for other works by this author on: Oxford Academic PubMed Google Scholar Matthew P. Ayres 3Department of Biological Sciences, Dartmouth College, Hanover, NH 0375 Environmental Entomology, Volume 40,...
Plantations of rapidly growing trees are becoming increasingly common because the high productivity can enhance local economies, support improvements in educational systems, and generally improve quality life rural communities. Landowners frequently choose to plant nonindigenous species; one rationalization has been that silvicultural is enhanced when separated from their native herbivores pathogens. The expectation enemy reduction species theoretical empirical studies release hypothesis...
Abstract Wildland fires have a multitude of ecological effects in forests, woodlands, and savannas across the globe. A major focus past research has been on tree mortality from fire, as trees provide vast range biological services. We assembled database individual-tree records prescribed wildfires United States. The Fire Tree Mortality (FTM) includes 164,293 individual with fire injury (crown scorch, bole char, etc.), diameter, either or top-kill up to ten years post-fire. Data span 142...
Sirex noctilio Fabricius (Hymenoptera, Siricidae) is rare and rarely studied where it native in Eurasia, but a widespread pest of pines the Southern Hemisphere. Here we report on abundance, basic biology, host use patterns natural enemies S. Galicia, Spain. Most trees attacked by failed to produce any adult progeny: >90% emergences came from <20% trees. The highest reproduction was Pinus pinaster, followed sylvestris radiata. proportions requiring 1, 2 or 3 years for development were 0.72:...
Context-dependency in species interactions is widespread and can produce concomitant patterns of context-dependent selection. Masting (synchronous production large seed crops at irregular intervals by a plant population) has been shown to reduce predation through satiation (reduction rates with increasing cone output) thus represents an important source context-dependency plant-animal interactions. However, the evolutionary consequences such dynamics are not well understood. Here we describe...
Like most pines, radiata pine (Pinus D.Don) is conventionally considered resistant to defoliation by European gypsy moth, i.e. it only consumed late larval stages, or when susceptible species are not available scarce. The ability of this moth complete development on host in field conditions has never been reported. A outbreak a pure plantation was observed north-western Spain, where insect endemic. During the 2 years culmination (2012 and 2013), approximately 46 ha were severely defoliated...