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A comparison of sap flux-based evapotranspiration estimates with catchment-scale water balance

Many researchers are using sap flux to estimate tree-level transpiration, and to scale to stand- and catchment-level transpiration; yet studies evaluating the comparability of sap flux-based estimates of transpiration (E_{) with alternative methods for estimating E_t at this spatial scale are rare. Our ability to...}

https://www.fs.usda.gov/treesearch/search?keywords=%22estimation%22&%3Bamp%3Bf%5B0%5D=author_facet%3A%22Questad%2C%20Erin%22&%3Bf%5B0%5D=author_facet%3A%22Wacker%2C%20James%22&f%5B0%5D=author_facet%3A%22Miniat%2C%20Chelcy%22&f%5B1%5D=author_facet%3A%22Swank%2C%20Wayne%20T.%22&f%5B2%5D=author_facet%3A%22Walker%2C%20Joan%22&f%5B3%5D=author_facet%3A%22Warren%2C%20Matthew%20W.%22&f%5B4%5D=author_facet%3A%22Guo%2C%20Qinfeng%22

Author(s):

Chelcy R. Ford; Robert M. Hubbard; Brian D. Kloeppel; James M. Vose

Year:

2007

Keywords:

scaling, sap flux density, sapwood area, transpiration, validation

Source:

Agricultural and Forest Meteorology, Vol. 145: 176-185

Imaging tropical peatlands in Indonesia using ground-penetrating radar (GPR) and electrical resistivity imaging (ERI): implications for carbon stock estimates and peat soil characterization

Current estimates of carbon (C) storage in peatland systems worldwide indicate that tropical peatlands comprise about 15% of the global peat carbon pool. Such estimates are uncertain due to data gaps regarding organic peat soil thickness, volume and C content. We combined a set of indirect geophysical methods (ground-penetrating radar, GPR, and electrical resistivity...

Author(s):

X. Comas; N. Terry; M. Warren; R. Kolka; A. Kristiyono; N. Sudiana; D. Nurjaman; T. Darusman

Year:

2015

Keywords:

Source:

Biogeosciences. 12: 2995-3007.

Modeling potential evapotranspiration of two forested watersheds in the southern Appalachians

Global climate change has direct impacts on watershed hydrology through altering evapotranspiration (ET) processes at multiple scales. There are many methods to estimate forest ET with models, but the most practical and the most popular one is the potential ET (PET) based method. However, the choice of PET methods for AET estimation remains challenging. This study...

Author(s):

L.Y. Rao; G. Sun; C.R. Ford; J.M. Vose

Year:

2011

Keywords:

FAO-56 grass reference ET, Forest potential evapotranspiration, Hamon equation, Priestley-Taylor equation

Source:

American Society of Agricultural and Biological Engineers (ASABE) 54(6):2067-2078

Long– and short-term precipitation effects on soil CO2 efflux and total belowground carbon allocation

Soil CO2 efflux (Esoil), the main pathway of C movement from the biosphere to the atmosphere, is critical to the terrestrial C cycle but how precipitation and soil moisture influence Esoil remains poorly understood. Here, we irrigated a longleaf pine wiregrass savanna for six years; this increased soil moisture by 41.2%. We tested how an altered precipitation regime...

Author(s):

Chelcy R. Ford; Jason McGee; Francesca Scandellari; Erik A. Hobbie; Robert J. Mitchell

Year:

2012

Keywords:

Carbon allocation, Climate change, Longleaf pine, Irrigation, Root demography, Soil respiration

Source:

Agricultural and Forest Meteorology 156:54-64

Woolly bully: estimating the effect of an invasive insect on an area’s water cycle

Author(s):

Chelcy R. Ford; James M. Vose

Year:

2009

Keywords:

Source:

The Natural inquirer Monograph Series – Experimental Forests and Ranges 3:1-31.

Adaptive cluster sampling: An efficient method for assessing inconspicuous species

Restorationistis typically evaluate the success of a project by estimating the population sizes of species that have been planted or seeded. Because total census is raely feasible, they must rely on sampling methods for population estimates. However, traditional random sampling designs may be inefficient for species that, for one reason or another, are challenging to...

Author(s):

Andrea M. Silletti; Joan Walker

Year:

2003

Keywords:

Source:

Ecological Restoration 21(4): 330-331

Equations for estimating biomass, foliage area, and sapwood of small trees in the southern Appalachians

Small trees and shrubs play an important role in forest diversity and regeneration and may contribute substantially to ecosystem fluxes of carbon and water; however, relatively little attention is given to quantifying the contribution of small trees to forest processes. One reason for this may be that the allometric equations developed for large trees tend to...

Author(s):

Steven T. Brantley; Morgan L. Schulte; Paul V. Bolstad; Chelcy F. Miniat

Year:

2016

Keywords:

Allometric equations, forest regeneration, forest understories, leaf area index, plant surface area, sapwood area

Source:

Forest Science

A general predictive model for estimating monthly ecosystem evapotranspiration

Accurately quantifying evapotranspiration (ET) is essential for modelling regional-scale ecosystem water balances. This study assembled an ET data set estimated from eddy flux and sapflow measurements for 13 ecosystems across a large climatic and management gradient from the United States, China, and Australia. Our objectives were to determine the relationships among...

Author(s):

Ge Sun; Karrin Alstad; Jiquan Chen; Shiping Chen; Chelcy R. Ford; al. et.

Year:

2011

Keywords:

climate change, ET, eddy flux, modelling, sap flow, water balance

Source:

Ecohydrology 4(2):245-255

Runoff curve numbers for 10 small forested watersheds in the mountains of the eastern United States

Engineers and hydrologists use the curve number method to estimate runoff from rainfall for different land use and soil conditions; however, large uncertainties occur for estimates from forested watersheds. This investigation evaluates the accuracy and consistency of the method using rainfall-runoff series from 10 small forested-mountainous watersheds in the eastern...

Author(s):

Negussie H. Tedela; Steven C. McCutcheon; Todd C. Rasmussen; Richard H. Hawkins; Wayne T. Swank; John L. Campbell; Mary Beth Adams; C. Rhett Jackson; Ernest W. Tollner

Year:

2012

Keywords:

Curve number method, Rainfall-runoff relationships, Forests, Mountains, Watersheds, Eastern United States, Annual maximum series, Median, Geometric mean, Nonlinear least squares, Asymptotic

Source:

Journal of Hydrologic Engineering. 17: 1188-1198.

Simulating vegetation controls on hurricane-induced shallow landslides with a distributed ecohydrological model

The spatial distribution of shallow landslides in steep forested mountains is strongly controlled by aboveground and belowground biomass, including the distribution of root cohesion. While remote sensing of aboveground canopy properties is relatively advanced, estimating the spatial distribution of root cohesion at the forest landscape scale remains challenging. We...

Author(s):

Taehee Hwang; Lawrence E. Band; T. C. Hales; Chelcy F. Miniat; James M. Vose; Paul V. Bolstad; Brian Miles; Katie Price

Year:

2015

Keywords:

Lidar remote sensing is effective estimating spatial root cohesion patterns Belowground vegetation information

Source:

Journal of Geophysical Research: Biogeosciences. 18 p.

Curve numbers for nine mountainous eastern United States watersheds: seasonal variation and forest cutting

Many engineers and hydrologists use the curve number method to estimate runoff from ungaged watersheds; however, the method does not explicitly account for the influence of season or forest cutting on runoff. This study of observed rainfall and runoff for small, forested watersheds that span the Appalachian Mountains of the eastern United States showed that curve...

Author(s):

Negussie H. Tedela; Steven C. McCutcheon; John L. Campbell; Wayne T. Swank; Mary Beth Adams; Todd C. Rasmussen

Year:

2012

Keywords:

Seasonal variations, Rainfall-runoff relationships, Watersheds, Forests, Runoff, Logging, Mountains, Curve number

Source:

Journal of Hydrologic Engineering. 17: 1199-1203.

Inferring the contribution of advection to total ecosystem scalar fluxes over a tall forest in complex terrain

Multiple data streams from a new flux tower located in complex and heterogeneous terrain at theCoweeta Hydrologic Laboratory (North Carolina, USA) were integrated to identify periods of advectiveflow regimes. Drainage flows were expected a priori, due to the location of the measurement site at thebase of a long, gently-sloping valley. Drainage flow was confirmed by...

Author(s):

K. Novick; S. Brantley; C. Ford Miniat; J. Walker; J.M. Vose

Year:

2014

Keywords:

Source:

Agricultural and Forest Meteorology

Tsuga canadensis (L.) Carr, mortality will impact hydrologic processes in southern Appalachian forest ecosystems

Eastern hemlock (Tsuga canadensis (L.) Carr.) is one of the principal riparian and cove canopy species in the southern Appalachian Mountains. Throughout its range, eastern hemlock is facing potential widespread mortality from the hemlock woolly adelgid (HWA). If HWA-induced eastern hemlock mortality alters hydrologic function, land managers...

Author(s):

Chelcy R. Ford; James M. Vose

Year:

2007

Keywords:

Appalachian Mountains, conductance, eastern hemlock, hemlock woolly adelgid (HWA), hydrology, sap flux, scaling, time-series, transpiration, Tsuga canadensis (L.) Carr., water relations, water use

Source:

Ecological Applications, Vol. 17(4): 1156-1167

History and current condition of longleaf pine in the Southern United States

Longleaf pine (Pinus palustris Mill.) was once one of the most ecologically important tree species in the Southern United States. Longleaf pine and its accompanying forest ecosystems covered vast swaths of the Southern United States, spanning an estimated 92 million acres. Although once one of the most extensive forest ecosystems in North America, only a fraction of...

Author(s):

Christopher M. Oswalt; Jason A. Cooper; Dale G. Brockway; Horace W. Brooks; Joan L. Walker; Kristina F. Connor; Sonja N. Oswalt; Roger C. Conner

Year:

2012

Keywords:

FIA, forest inventory, longleaf pine, pine conservation, Pinus palustris, southern pines

Source:

Gen. Tech. Rep. SRS–166. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 51 p.

Cold air drainage flows subsidize montane valley ecosystem productivity

In mountainous areas, cold air drainage from high to low elevations has pronounced effects on local temperature, which is a critical driver of many ecosystem processes, including carbon uptake and storage. Here, we leverage new approaches for interpreting ecosystem carbon flux observations in complex terrain to quantify the links between macro-climate...

Author(s):

Kimberly A. Novick; Andrew C. Oishi; Chelcy Ford Miniat

Year:

2016

Keywords:

complex terrain, drainage flows, drought, ecosystem respiration, gross ecosystem productivity, mircoclimate, net ecosystem exchange, net ecosystem productivity

Source:

Global Change Biology

Rainfall partitioning varies across a forest age chronosequence in the southern Appalachian Mountains

Evaporation of precipitation from plant surfaces, or interception, is a major component of the global water budget. Interception has been measured and/or modelled across a wide variety of forest types; however, most studies have focused on mature, second-growth forests and few studies have examined interception processes across forest age classes. We present...

Author(s):

Steven T. Brantley; Chelcy F. Miniat; Paul V Bolstad

Year:

2019

Keywords:

Forest succession, funneling ratios, interception, stemflow, throughfall

Source:

Ecohydrology

Use of water by eastern hemlock: implications for systemic insecticide application

The hemlock woolly adelgid (HWA, Adelges tsugae Annand) is causing widespread decline and mortality of eastern hemlock (Tsuga canadensis (L.) Carr.) throughout most of the range of eastern hemlock. Stem injection of insecticide is widely used as a chemical control measure, but the effectiveness of this method depends on the...

Author(s):

Chelcy R. Ford; James M. Vose; Michael Daley; Nathan Phillips

Year:

2007

Keywords:

Adelges tsugae, hemlock, imidacloprid, insecticide, systemic, transpiration, Tsuga spp., water use

Source:

Arboriculture & Urban Forestry 33(6): 421-427

An interactive tool for processing sap flux data from thermal dissipation probes

Sap flux sensors are an important tool for estimating tree-level transpiration in forested and urban ecosystems around the world. Thermal dissipation (TD) or Granier-type sap flux probes are among the most commonly used due to their reliability, simplicity, and low cost.

Author(s):

Andrew C. Oishi; Chelcy F. Miniat

Year:

2016

Keywords:

Source:

In: Stringer, Christina E.; Krauss, Ken W.; Latimer, James S., eds. 2016. Headwaters to estuaries: advances in watershed science and management -Proceedings of the Fifth Interagency Conference on Research in the Watersheds. March 2-5, 2015, North Charleston, South Carolina. e-General Technical Report SRS-211. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 302 p.

Transient changes in transpiration, and stem and soil CO2 efflux in longleaf pine (Pinus palustris Mill.) following fire-induced leaf area reduction

In 20-year-old longleaf pine, we examined short-term effects of reduced live leaf area (A L) via canopy scorching on sap flow (Q; kg H2O h?1), transpiration per unit leaf area (E L; mm day?1), stem CO2 efflux (R stem; ?mol m?2 s?1) and soil CO2 efflux (R soil; ?mol m?2 s?1) over a 2-week period during early summer. R stem and Q were measured at two positions (1.3-m or...

Author(s):

Barton Clinton; Chris Maier; Chelcy Ford; Robert Mitchell

Year:

2011

Keywords:

fire, longleaf pine, sap flow, stem respiration, soil respiration, Ichauway

Source:

Trees

Future species composition will affect forest water use after loss of eastern hemlock from southern Appalachian forests

Infestation of eastern hemlock (Tsuga canadensis (L.) Carr.) with hemlock woolly adelgid (HWA, Adelges tsugae) has caused widespread mortality of this key canopy species throughout much of the southern Appalachian Mountains in the past decade. Because eastern hemlock is heavily concentrated in riparian habitats, maintains a dense...

Author(s):

Steven Brantley; Chelcy R. Ford; James M. Vose

Year:

2013

Keywords:

Source:

Ecological Applications 23(4):777-790

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A comparison of sap flux-based evapotranspiration estimates with catchment-scale water balance

Imaging tropical peatlands in Indonesia using ground-penetrating radar (GPR) and electrical resistivity imaging (ERI): implications for carbon stock estimates and peat soil characterization

Modeling potential evapotranspiration of two forested watersheds in the southern Appalachians

Long– and short-term precipitation effects on soil CO2 efflux and total belowground carbon allocation

Woolly bully: estimating the effect of an invasive insect on an area’s water cycle

Adaptive cluster sampling: An efficient method for assessing inconspicuous species

Equations for estimating biomass, foliage area, and sapwood of small trees in the southern Appalachians

A general predictive model for estimating monthly ecosystem evapotranspiration

Runoff curve numbers for 10 small forested watersheds in the mountains of the eastern United States

Simulating vegetation controls on hurricane-induced shallow landslides with a distributed ecohydrological model

Curve numbers for nine mountainous eastern United States watersheds: seasonal variation and forest cutting

Inferring the contribution of advection to total ecosystem scalar fluxes over a tall forest in complex terrain

Tsuga canadensis (L.) Carr, mortality will impact hydrologic processes in southern Appalachian forest ecosystems

History and current condition of longleaf pine in the Southern United States

Cold air drainage flows subsidize montane valley ecosystem productivity

Rainfall partitioning varies across a forest age chronosequence in the southern Appalachian Mountains

Use of water by eastern hemlock: implications for systemic insecticide application

An interactive tool for processing sap flux data from thermal dissipation probes

Transient changes in transpiration, and stem and soil CO2 efflux in longleaf pine (Pinus palustris Mill.) following fire-induced leaf area reduction

Future species composition will affect forest water use after loss of eastern hemlock from southern Appalachian forests

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