A5033566088- Ecology and Vegetation Dynamics Studies
- Plant responses to elevated CO2
- Forest Insect Ecology and Management
- Plant and animal studies
- Atmospheric chemistry and aerosols
- Insect-Plant Interactions and Control
- Fire effects on ecosystems
- Plant Water Relations and Carbon Dynamics
- Forest Management and Policy
- Bioenergy crop production and management
- Animal Ecology and Behavior Studies
- Plant Parasitism and Resistance
- Forest ecology and management
- Insect Pest Control Strategies
- Insect and Pesticide Research
- Horticultural and Viticultural Research
- Plant biochemistry and biosynthesis
- Botany and Plant Ecology Studies
- Soil Carbon and Nitrogen Dynamics
- Insect and Arachnid Ecology and Behavior
- Plant Gene Expression Analysis
- Wildlife Ecology and Conservation
- Species Distribution and Climate Change
- Insect Resistance and Genetics
- Allelopathy and phytotoxic interactions
University of Wisconsin–Madison
2015-2024
Yellowstone Ecological Research Center
2012
Northern Arizona University
2011
Linde (United States)
1995
Center for Environmental Health
1994
University of Wisconsin System
1989
Hasanuddin University
1987
Michigan State University
1987
University of Illinois Urbana-Champaign
1983-1986
Goodwin College
1984
Abstract This review examines the direct effects of climate change on insect herbivores. Temperature is identified as dominant abiotic factor directly affecting herbivorous insects. There little evidence any CO 2 or UVB. Direct impacts precipitation have been largely neglected in current research change. affects development, survival, range and abundance. Species with a large geographical will tend to be less affected. The main effect temperature temperate regions influence winter survival;...
We present evidence that the heritable genetic variation within individual species, especially dominant and keystone has community ecosystem consequences. These consequences represent extended phenotypes, i.e., effects of genes at levels higher than population. Using diverse examples from microbes to vertebrates, we demonstrate phenotype can be traced individuals possessing trait, community, processes such as leaf litter decomposition N mineralization. In our development a genetics...
Although rising levels of atmospheric carbon dioxide are expected to directly affect forest ecosystems, little is known how specific ecological interactions will be modified. This research evaluated the effects enriched CO 2 on productivity and phytochemistry trees performance associated insects. Our experimental system consisted three tree species (quaking aspen [Populus tremuloides], red oak [Quercus rubra], sugar maple [Acer saccharum]) that span a range from fast slow growing, two...
Abstract Fundamental links between genes and ecosystem processes have remained elusive, although they the potential to place sciences within a genetic evolutionary framework. Utilizing common gardens with cottonwood trees of known genotype, we found that concentration condensed tannins is genetically based best predictor ecosystem‐level processes. Condensed tannin inputs from foliage explained 55–65% variation in soil net nitrogen (N) mineralization under both field laboratory conditions....
Summary The impacts of elevated atmospheric CO 2 and/or O 3 have been examined over 4 years using an open‐air exposure system in aggrading northern temperate forest containing two different functional groups (the indeterminate, pioneer, ‐sensitive species Trembling Aspen, Populus tremuloides and Paper Birch, Betula papyrifera , the determinate, late successional, ‐tolerant Sugar Maple, Acer saccharum ). responses to these interacting greenhouse gases remarkably consistent pure Aspen stands...
• Salicin-based phenolic glycosides, hydroxycinnamate derivatives and flavonoid-derived condensed tannins comprise up to one-third of Populus leaf dry mass. Genes regulating the abundance chemical diversity these substances have not been comprehensively analysed in tree species exhibiting this metabolically demanding level metabolism. Here, shikimate-phenylpropanoid pathway genes thought give rise products were annotated from genome, their expression assessed by semiquantitative or...
Abstract Environmental change is anticipated to negatively affect both plant and animal populations. As abiotic factors rapidly habitat suitability, projections range from altered genetic diversity wide‐spread species loss. Here, we assess the degree which changes in atmospheric composition associated with environmental will influence not only abundance, but also genotypic/phenotypic diversity, of herbivore Using free‐air CO 2 O 3 enrichment (FACE) technology, numerical responses pea aphids...
Subspecies of the eastern tiger swallowtail butterfly exhibit striking differences in their ability to use quaking aspen (Populus tremuloides) and other members Salicaceae as larval host plants. Papilio glaucus canadensis survives grows well on aspen, whereas does not. In earlier studies we isolated a crude fraction compounds that exhibited activity against P. g. identified components suite four phenolic glycosides (salicin, salicortin, tremuloidin, tremulacin). This study was designed...
Summary Spectroscopy has recently emerged as an effective method to accurately characterize leaf biochemistry in living tissue through the application of chemometric approaches foliar optical data, but this approach not been widely used for plant secondary metabolites. Here, we examine ability reflectance spectroscopy quantify specific phenolic compounds trembling aspen ( Populus tremuloides ) and paper birch Betula papyrifera that play influential roles ecosystem functioning related...
Ecological genetics is increasingly recognized as critical to understanding interactions among organisms and ecosystem processes. Using a common garden with pure hybrid cottonwood trees of known genotype, two years field surveys, cafeteria feeding experiment, we link introgression Fremont genetic markers, condensed tannins (a genetically based plant trait), foraging by beavers. These data support major arguments. First, hybridization an important mechanism for the transmission ecologically...
Increasing concentrations of atmospheric CO2 will interact with other environmental factors to influence the physiology and ecology trees. This research evaluated how plant phytochemical responses enriched are affected by availability soil nitrate (NO3−) these chemical changes, in turn, alter performance a tree-feeding folivore. Seedlings three deciduous tree species—quaking aspen (Populus tremuloides), red oak (Quercus rubra), sugar maple (Acer saccharum)—were grown ambient (355 μL/L) or...