Eric L. Kruger
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View article: Quantifying foliar trait variation and covariation in sun and shade leaves using leaf spectroscopy in eastern North America
Quantifying foliar trait variation and covariation in sun and shade leaves using leaf spectroscopy in eastern North America Open
Characterizing foliar trait variation in sun and shade leaves can provide insights into inter- and intra-species resource use strategies and plant response to environmental change. However, datasets with records of multiple foliar traits f…
View article: Genotypic variation rather than ploidy level determines functional trait expression in a foundation tree species in the presence and absence of environmental stress
Genotypic variation rather than ploidy level determines functional trait expression in a foundation tree species in the presence and absence of environmental stress Open
Background and Aims At the population level, genetic diversity is a key determinant of a tree species’ capacity to cope with stress. However, little is known about the relative importance of the different components of genetic diversity fo…
View article: Genotypic variation rather than ploidy level determines functional trait expression in a foundation tree species in the presence and absence of environmental stress
Genotypic variation rather than ploidy level determines functional trait expression in a foundation tree species in the presence and absence of environmental stress Open
Background and Aims : At the population level, genetic diversity is a key determinant of a tree species’ capacity to cope with stress. However, little is known about the relative importance of the different components of genetic diversity …
View article: <i>Ixodes scapularis</i> density in US temperate forests shaped by deer, earthworms, and disparate factors at two scales
<i>Ixodes scapularis</i> density in US temperate forests shaped by deer, earthworms, and disparate factors at two scales Open
Forest and wildlife management can help regulate the risk of human exposure to tick‐borne pathogens by influencing the population density of host‐seeking ticks and the pathogen infection prevalence in tick populations. For the blacklegged …
View article: Ixodes scapularis density in US temperate forests shaped by deer, earthworms, and other disparate factors at two scales
Ixodes scapularis density in US temperate forests shaped by deer, earthworms, and other disparate factors at two scales Open
Dataset to accompany Ecosphere article: Ixodes scapularis density in US temperature forests shaped by deer, earthworms, and other disparate factors at two scales
View article: Genotypic variation rather than ploidy level shapes trait expression in a foundation tree species under drought stress and defoliation
Genotypic variation rather than ploidy level shapes trait expression in a foundation tree species under drought stress and defoliation Open
With advancing climate change, tree survival increasingly depends on mechanisms that facilitate coping with multiple environmental stressors. At the population level, genetic diversity is a key determinant of a tree species’ capacity to de…
View article: Air—Surface Exchange in CHEESEHEAD19: Food for Machine Learning To Scale Energy Fluxes
Air—Surface Exchange in CHEESEHEAD19: Food for Machine Learning To Scale Energy Fluxes Open
Improvements in numerical weather and climate modeling depend on accurate accounting of land-atmosphere interactions and the biological processes that mediate them at multiple spatial and temporal scales.Unfortunately, there is a problemat…
View article: Growth–defense trade-offs shape population genetic composition in an iconic forest tree species
Growth–defense trade-offs shape population genetic composition in an iconic forest tree species Open
Significance Genetic diversity is critical for ecological resilience and is maintained when different traits are advantageous in different environments. Traits are not entirely independent, however: When trade-offs occur, selection on one …
View article: Trail camera networks provide insights into satellite-derived phenology for ecological studies
Trail camera networks provide insights into satellite-derived phenology for ecological studies Open
Repeat digital photography at or near ground-level is a proven and efficient approach for tracking plant phenology. Here, we explored the potential to monitor phenology using the Snapshot Wisconsin (SW) trail camera network, a citizen scie…
View article: Trait plasticity and trade‐offs shape intra‐specific variation in competitive response in a foundation tree species
Trait plasticity and trade‐offs shape intra‐specific variation in competitive response in a foundation tree species Open
Summary The ability to tolerate neighboring plants (i.e. degree of competitive response) is a key determinant of plant success in high‐competition environments. Plant genotypes adjust their functional trait expression under high levels of …
View article: Connecting Land–Atmosphere Interactions to Surface Heterogeneity in CHEESEHEAD19
Connecting Land–Atmosphere Interactions to Surface Heterogeneity in CHEESEHEAD19 Open
The Chequamegon Heterogeneous Ecosystem Energy-Balance Study Enabled by a High-Density Extensive Array of Detectors 2019 (CHEESEHEAD19) is an ongoing National Science Foundation project based on an intensive field campaign that occurred fr…
View article: Foliar functional traits from imaging spectroscopy across biomes in eastern North America
Foliar functional traits from imaging spectroscopy across biomes in eastern North America Open
Summary Foliar functional traits are widely used to characterize leaf and canopy properties that drive ecosystem processes and to infer physiological processes in Earth system models. Imaging spectroscopy provides great potential to map fo…
View article: From the Arctic to the tropics: multibiome prediction of leaf mass per area using leaf reflectance
From the Arctic to the tropics: multibiome prediction of leaf mass per area using leaf reflectance Open
Summary Leaf mass per area (LMA) is a key plant trait, reflecting tradeoffs between leaf photosynthetic function, longevity, and structural investment. Capturing spatial and temporal variability in LMA has been a long‐standing goal of ecol…
View article: Chemical defense over decadal scales: Ontogenetic allocation trajectories and consequences for fitness in a foundation tree species
Chemical defense over decadal scales: Ontogenetic allocation trajectories and consequences for fitness in a foundation tree species Open
Expression of herbivore defense traits can change dramatically during the course of plant development. Little is known, however, about the degree of genetic or sexual variation in these ontogenetic defense trajectories or whether the traje…
View article: Global photosynthetic capacity is optimized to the environment
Global photosynthetic capacity is optimized to the environment Open
Earth system models (ESMs) use photosynthetic capacity, indexed by the maximum Rubisco carboxylation rate (Vcmax ), to simulate carbon assimilation and typically rely on empirical estimates, including an assumed dependence on le…
View article: Acclimation and adaptation components of the temperature dependence of plant photosynthesis at the global scale
Acclimation and adaptation components of the temperature dependence of plant photosynthesis at the global scale Open
Summary The temperature response of photosynthesis is one of the key factors determining predicted responses to warming in global vegetation models ( GVM s). The response may vary geographically, owing to genetic adaptation to climate, and…
View article: Using imaging spectroscopy to detect variation in terrestrial ecosystem productivity across a water‐stressed landscape
Using imaging spectroscopy to detect variation in terrestrial ecosystem productivity across a water‐stressed landscape Open
A central challenge to understanding how climate anomalies, such as drought and heatwaves, impact the terrestrial carbon cycle, is quantification and scaling of spatial and temporal variation in ecosystem gross primary productivity ( GPP )…
View article: ACi-TGlob_V1.0: A Global dataset of photosynthetic CO2 response curves of terrestrial plants.
ACi-TGlob_V1.0: A Global dataset of photosynthetic CO2 response curves of terrestrial plants. Open
This database accompanies the publication "Kumarathunge et al (2019) Acclimation and adaptation components of the temperature dependence of plant photosynthesis at the global scale”. New Phytologist (https://nph.onlinelibrary.wiley.com/doi…
View article: Deer‐mediated changes in environment compound the direct impacts of herbivory on understorey plant communities
Deer‐mediated changes in environment compound the direct impacts of herbivory on understorey plant communities Open
Summary In forests of eastern North America, white‐tailed deer ( O docoileus virginianus ) can directly affect, via herbivory, the presence, abundance and reproductive success of many plant species. In addition, deer indirectly influence u…
View article: Phytochemical traits underlie genotypic variation in susceptibility of quaking aspen (<i>Populus tremuloides</i>) to browsing by a keystone forest ungulate
Phytochemical traits underlie genotypic variation in susceptibility of quaking aspen (<i>Populus tremuloides</i>) to browsing by a keystone forest ungulate Open
Summary Overbrowsing by ungulates is a major cause of poor aspen stand regeneration across North America and Eurasia. In general, factors driving ungulate browser preferences include concentrations of plant secondary compounds and the nutr…
View article: Remotely estimating photosynthetic capacity, and its response to temperature, in vegetation canopies using imaging spectroscopy
Remotely estimating photosynthetic capacity, and its response to temperature, in vegetation canopies using imaging spectroscopy Open