A5022375609- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Hydrology and Watershed Management Studies
- Forest Management and Policy
- Tree-ring climate responses
- Seedling growth and survival studies
- Soil and Unsaturated Flow
- Forest Ecology and Biodiversity Studies
- Plant responses to elevated CO2
- Water Quality and Resources Studies
- Fire effects on ecosystems
- Climate change impacts on agriculture
- Soil erosion and sediment transport
- Hydrology and Sediment Transport Processes
- Tree Root and Stability Studies
- Species Distribution and Climate Change
- Water Quality and Pollution Assessment
- Environmental and Cultural Studies in Latin America and Beyond
- Fish Ecology and Management Studies
- Atmospheric and Environmental Gas Dynamics
- Animal Disease Management and Epidemiology
- Sustainable Development and Environmental Policy
- Service-Learning and Community Engagement
- Botany and Geology in Latin America and Caribbean
- Climate variability and models
Southern Research Station
2009-2021
US Forest Service
2012-2017
Economic Research Service
2015
United States Department of Agriculture
2012
North Carolina State University
2008
[1] We developed a water-centric monthly scale simulation model (WaSSI-C) by integrating empirical water and carbon flux measurements from the FLUXNET network an existing supply demand accounting (WaSSI). The WaSSI-C was evaluated with basin-scale evapotranspiration (ET), gross ecosystem productivity (GEP), net exchange (NEE) estimates multiple independent methods across 2103 eight-digit Hydrologic Unit Code watersheds in conterminous United States 2001 to 2006. Our results indicate that...
Commentary p 3
The study examined the relationships between whole tree hydraulic conductance (K(tree)) and in roots (K(root)) leaves (K(leaf)) loblolly pine trees. In addition, role of seasonal variations K(root) K(leaf) mediating stomatal control transpiration its response to vapour pressure deficit (D) as soil-dried was studied. Compared trunk branches, had highest loss conductivity contributed more than 75% total resistance. Drought altered partitioning resistance leaves. As soil moisture dropped below...
Increasing variability of rainfall patterns requires detailed understanding the pathways water loss from ecosystems to optimize carbon uptake and management choices. In current study we characterized usability three alternative methods different rigor for quantifying stand-level evapotranspiration (ET), partitioned ET into tree transpiration (T), understory transpiration, interception, soil evaporation (E S) determined their sensitivity drought, evaluated reliability moisture measurements by...
Deep root water uptake and hydraulic redistribution (HR) have been shown to play a major role in forest ecosystems during drought, but little is known about the impact of climate change, fertilization soil characteristics on HR its consequences carbon fluxes. Using data from three mid-rotation loblolly pine plantations, simulations with process-based model MuSICA, this study indicated that can mitigate effects drying had important implications for potential net ecosystem exchange (NEE),...
<abstract> <b><sc>Abstract.</sc></b> The area of planted pine in the southern U.S. is predicted to increase by over 70% 2060, potentially altering natural hydrologic cycle and water balance at multiple scales. To better account for potential shifts yield, land managers resource planners must accurately quantify budgets from stand regional scale. amount precipitation as rainfall intercepted forest canopies an important component evapotranspiration forested ecosystems, yet there little...
Abstract Our objectives are (1) to compare tree sap flux density ( J s in g cm −2 d −1 ) and stomatal conductance G mmol m across five dominant species, red maple Acer rubrum ), sweetgum Liquidambar styraciflua tulip poplar Liriodendron tulipifera loblolly pine Pinus taeda oak species Quercus spp.), (2) quantity riparian buffer stand transpiration E mm (3) link of residual trees stream discharge. In June 2010, the above were instrumented with flow sensors a pair (HF1 HF2) 12 hectare gauged...
Abstract Although many forestry practitioners have a general understanding of the Forest Inventory and Analysis (FIA) program type data collected, most non-expert users FIA reports basic are unlikely to be familiar with breadth information available potential uses data. We present case studies from three USDA Service regions highlight variety applications data, informing forest plan revision process supplying managers timely on important attributes at stand landscape scales. These examples...
Forest Inventory and Analysis (FIA) data provides robust information for the United States Service’s (USFS) mid-to-broad-scale planning assessments, but ecological challenges (i.e., climate change, wildfire) necessitate increasingly strategic without significantly increasing field sampling. Small area estimation (SAE) techniques could provide more precision supported by a rapidly growing suite of landscape-scale datasets. We present three Regional case studies demonstrating current FIA uses,...