Scott V. Ollinger
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View article: <i>pnetr</i> : An R package for the <scp>PnET</scp> family of forest ecosystem models
<i>pnetr</i> : An R package for the <span>PnET</span> family of forest ecosystem models Open
Ecosystem models offer a rigorous way to formalize scientific theories and are critical to evaluating complex interactions among ecological and biogeochemical processes. In addition to simulation and prediction, ecosystem models are a valu…
View article: <i>pnetr</i>: An R package for the PnET family of forest ecosystem models
<i>pnetr</i>: An R package for the PnET family of forest ecosystem models Open
Ecosystem models offer a rigorous way to formalize scientific theories and are critical to evaluating complex interactions among ecological and biogeochemical processes. In addition to simulation and prediction, ecosystem models are a valu…
View article: Belowground exploration by trees and shrubs
Belowground exploration by trees and shrubs Open
Unlike trees, shrubs (i.e., multiple-stemmed woody plants) do not need evenly spaced large diameter structural roots and therefore should be more responsive to heterogeneous distributions of soil resources and spread further per unit below…
View article: Root Foraging by Trees and Shrubs
Root Foraging by Trees and Shrubs Open
Unlike trees, shrubs (i.e., multiple-stemmed woody plants) do not need evenly spaced large diameter structural roots and thus can spread further per unit belowground biomass. We therefore hypothesized that compared to trees, shrubs respond…
View article: Leaf-On LiDAR Point Cloud of Thompson Farm Flux Tower Footprint Acquired by Unpiloted Aerial System, 2022
Leaf-On LiDAR Point Cloud of Thompson Farm Flux Tower Footprint Acquired by Unpiloted Aerial System, 2022 Open
LiDAR data were acquired over the footprint of the flux tower and established long-term study plots at Thompson Farm Observatory, Durham, NH during the growing season. Data were acquired using a LiVox Avia lidar sensor on a Green Valley In…
View article: Hyperspectral Surface Directional Reflectance Flight Line Mosaics of Prospect Hill Tract Megaplot Acquired by Unpiloted Aerial System, 2019
Hyperspectral Surface Directional Reflectance Flight Line Mosaics of Prospect Hill Tract Megaplot Acquired by Unpiloted Aerial System, 2019 Open
Orthorectified flight line hyperspectral cubes retiled for publication. Collectively, the tiled hyperspectral cubes cover the extent of the Prospect Hill Megaplot. Data were acquired using a Headwall Photonics, Inc. Nano VNIR hyperspectra…
View article: Leaf-Off LiDAR Point Cloud of Thompson Farm Flux Tower Footprint Acquired by Unpiloted Aerial System, 2022
Leaf-Off LiDAR Point Cloud of Thompson Farm Flux Tower Footprint Acquired by Unpiloted Aerial System, 2022 Open
LiDAR data were acquired over the footprint of the flux tower and established long-term study plots at Thompson Farm Observatory, Durham, NH during leaf-off conditions in November 2022. Data were acquired using a LiVox Avia lidar sensor on…
View article: Hyperspectral Surface Directional Reflectance Flight Line Mosaics of Thompson Farm Flux Tower Footprint Acquired by Unpiloted Aerial System, 2021
Hyperspectral Surface Directional Reflectance Flight Line Mosaics of Thompson Farm Flux Tower Footprint Acquired by Unpiloted Aerial System, 2021 Open
Orthorectified flight line hyperspectral cubes retiled for publication. Collectively, the tiled hyperspectral cubes cover the footprint of the flux tower and established long-term study plots at Thompson Farm Observatory, Durham, NH. Data …
View article: Detecting long‐term changes in stomatal conductance: challenges and opportunities of tree‐ring <scp>δ<sup>18</sup>O</scp> proxy
Detecting long‐term changes in stomatal conductance: challenges and opportunities of tree‐ring <span>δ<sup>18</sup>O</span> proxy Open
There is growing scientific consensus that rising atmospheric CO2 concentrations have caused an increase in forest water-use efficiency (WUE), but the magnitude of this effect and the relative roles of enhanced photosynthesis vs reduced st…
View article: Simpler Presentations of Climate Change
Simpler Presentations of Climate Change Open
The basics of climate change science have been known for a long time, and the predicted impact of a doubling of atmospheric carbon dioxide on global temperature hasn’t changed much in 100 years.
View article: Early spring onset increases carbon uptake more than late fall senescence: Modeling future phenological change in a US northern deciduous forest
Early spring onset increases carbon uptake more than late fall senescence: Modeling future phenological change in a US northern deciduous forest Open
The timing of spring leaf development and fall senescence determine how long deciduous forests actively exchange carbon and water with the atmosphere. Being able to model these dates is therefore critical to accurately representing ecosyst…
View article: Evidence, causes, and consequences of declining nitrogen availability in terrestrial ecosystems
Evidence, causes, and consequences of declining nitrogen availability in terrestrial ecosystems Open
The productivity of ecosystems and their capacity to support life depends on access to reactive nitrogen (N). Over the past century, humans have more than doubled the global supply of reactive N through industrial and agricultural activiti…
View article: Coupling of Tree Growth and Photosynthetic Carbon Uptake Across Six North American Forests
Coupling of Tree Growth and Photosynthetic Carbon Uptake Across Six North American Forests Open
Linking biometric measurements of stand‐level biomass growth to tower‐based measurements of carbon uptake—gross primary productivity and net ecosystem productivity—has been the focus of numerous ecosystem‐level studies aimed to better unde…
View article: Microbial Activity and Root Carbon Inputs Are More Important than Soil Carbon Diffusion in Simulating Soil Carbon Profiles
Microbial Activity and Root Carbon Inputs Are More Important than Soil Carbon Diffusion in Simulating Soil Carbon Profiles Open
It is well‐known that soil carbon composition and turnover rate vary with soil depth, and the responses of soil carbon to global change in deeper soil layers may differ from those near the surface. Therefore, vertically resolved soil carbo…
View article: Carbon budget of the Harvard Forest Long‐Term Ecological Research site: pattern, process, and response to global change
Carbon budget of the Harvard Forest Long‐Term Ecological Research site: pattern, process, and response to global change Open
How, where, and why carbon (C) moves into and out of an ecosystem through time are long‐standing questions in biogeochemistry. Here, we bring together hundreds of thousands of C‐cycle observations at the Harvard Forest in central Massachus…
View article: Mapping canopy nitrogen in European forests using remote sensing and environmental variables with the random forests method
Mapping canopy nitrogen in European forests using remote sensing and environmental variables with the random forests method Open
Canopy nitrogen (N) influences carbon (C) uptake by vegetation through its important role in photosynthetic enzymes. Global Vegetation Models (GVMs) predict C assimilation, but are limited by a lack spatial canopy N input. Mapping canopy N…
View article: Tracing leaf litter-derived 15N to mineral soil organic matter in forests of different ages
Tracing leaf litter-derived 15N to mineral soil organic matter in forests of different ages Open
<p>Forest soils are important for retaining nitrogen (N), especially in areas where anthropogenic activities have led to historically high inputs of N. As forests age and their N demands for biomass accumulation decline, the capacity…
View article: Measuring Forest Biodiversity on the Ground and in the Air: Comparing Biodiversity Estimates from Ground-Based Surveys and Areal Imagery
Measuring Forest Biodiversity on the Ground and in the Air: Comparing Biodiversity Estimates from Ground-Based Surveys and Areal Imagery Open
Forest biodiversity has been declining across the globe due to anthropogenic activities. Losses of biodiversity have led to reduced forest health and ecosystem services. Therefore, it has become necessary to monitor changes in biodiversity…
View article: Tree Species Traits Determine the Success of LiDAR-Based Crown Mapping in a Mixed Temperate Forest
Tree Species Traits Determine the Success of LiDAR-Based Crown Mapping in a Mixed Temperate Forest Open
The ability to automatically delineate individual tree crowns using remote sensing data opens the possibility to collect detailed tree information over large geographic regions. While individual tree crown delineation (ITCD) methods have p…
View article: Remote Sensing of Geodiversity as a Link to Biodiversity
Remote Sensing of Geodiversity as a Link to Biodiversity Open
Two common approaches to conserving biodiversity are conserving the actors (species) and conserving the stage (habitat). Many management efforts focus on conserving the actors, but a major challenge to this strategy is uncertainty surround…
View article: Disentangling the role of photosynthesis and stomatal conductance on rising forest water-use efficiency
Disentangling the role of photosynthesis and stomatal conductance on rising forest water-use efficiency Open
Multiple lines of evidence suggest that plant water-use efficiency (WUE)—the ratio of carbon assimilation to water loss—has increased in recent decades. Although rising atmospheric CO 2 has been proposed as the principal cause, the underly…
View article: Towards connecting biodiversity and geodiversity across scales with satellite remote sensing
Towards connecting biodiversity and geodiversity across scales with satellite remote sensing Open
Issue Geodiversity (i.e., the variation in Earth's abiotic processes and features) has strong effects on biodiversity patterns. However, major gaps remain in our understanding of how relationships between biodiversity and geodiversity vary…
View article: Simulating surface energy fluxes using the variable-resolution Community Earth System Model (VR-CESM)
Simulating surface energy fluxes using the variable-resolution Community Earth System Model (VR-CESM) Open
Recent advances in variable-resolution (VR) global models provide the tools necessary to investigate local and global impacts of land cover by embedding a high-resolution grid over areas of interest in a seamless and computationally effici…
View article: How Does Sleep Affect Body Mass Index in College Students
How Does Sleep Affect Body Mass Index in College Students Open
View article: Beyond counts and averages: relating geodiversity to dimensions of biodiversity
Beyond counts and averages: relating geodiversity to dimensions of biodiversity Open
Code to accompany Read et al. manuscript on levels and dimensions of biodiversity, entitled "Beyond counts and averages: relating geodiversity to dimensions of biodiversity." Currently (06 Feb 2019) under consideration for publication in <…
View article: Beyond counts and averages: relating geodiversity to dimensions of biodiversity
Beyond counts and averages: relating geodiversity to dimensions of biodiversity Open
Introduction. Code to accompany Read et al. manuscript on levels and dimensions of biodiversity, entitled "Beyond counts and averages: relating geodiversity to dimensions of biodiversity." Currently in press at Global Ecology and…
View article: Guidelines and considerations for designing field experiments simulating precipitation extremes in forest ecosystems
Guidelines and considerations for designing field experiments simulating precipitation extremes in forest ecosystems Open
Precipitation regimes are changing in response to climate change, yet understanding of how forest ecosystems respond to extreme droughts and pluvials remains incomplete. As future precipitation extremes will likely fall outside the range o…
View article: Carbon fluxes and interannual drivers in a temperate forest ecosystem assessed through comparison of top-down and bottom-up approaches
Carbon fluxes and interannual drivers in a temperate forest ecosystem assessed through comparison of top-down and bottom-up approaches Open
View article: The role of surface roughness, albedo, and Bowen ratio on ecosystem energy balance in the Eastern United States
The role of surface roughness, albedo, and Bowen ratio on ecosystem energy balance in the Eastern United States Open
Land cover and land use influence surface climate through differences in biophysical surface properties, including partitioning of sensible and latent heat (e.g., Bowen ratio), surface roughness, and albedo. Clusters of closely spaced eddy…
View article: Model-based analysis of the impact of diffuse radiation on CO2 exchange in a temperate deciduous forest
Model-based analysis of the impact of diffuse radiation on CO2 exchange in a temperate deciduous forest Open