Stream Organic Matter Inputs, Storage, and Export for Satellite Branch at Coweeta Hydrologic Laboratory, North Carolina, USA

1997 ◽  
Vol 16 (1) ◽  
pp. 67-74 ◽  
Author(s):  
J. Bruce Wallace ◽  
T. F. Cuffney ◽  
S. L. Eggert ◽  
M. R. Whiles
Keyword(s):  
North Carolina ◽  
Organic Matter ◽  
Coweeta Hydrologic Laboratory

scholarly journals Long-term temperature and precipitation trends at the Coweeta Hydrologic Laboratory, Otto, North Carolina, USA

2012 ◽  
Vol 43 (6) ◽  
pp. 890-901 ◽  
Author(s):  
Stephanie H. Laseter ◽  
Chelcy R. Ford ◽  
James M. Vose ◽  
Lloyd W. Swift
Keyword(s):  
North Carolina ◽  
Global Climate ◽  
Forest Health ◽  
Monitoring Network ◽  
Drought Severity ◽  
Temperature And Precipitation ◽  
Air Temperatures ◽  
Precipitation Record ◽  
Coweeta Hydrologic Laboratory

Coweeta Hydrologic Laboratory, located in western North Carolina, USA, is a 2,185 ha basin wherein forest climate monitoring and watershed experimentation began in the early 1930s. An extensive climate and hydrologic network has facilitated research for over 75 years. Our objectives in this paper were to describe the monitoring network, present long-term air temperature and precipitation data, and analyze the temporal variation in the long-term temperature and precipitation record. We found that over the period of record: (1) air temperatures have been increasing significantly since the late 1970s, (2) drought severity and frequency have increased with time, and (3) the precipitation distribution has become more extreme over time. We discuss the implications of these trends within the context of regional and global climate change and forest health.

Chromophoric Dissolved Organic Matter (CDOM) In Rainwater, Southeastern North Carolina, USA

2006 ◽  
Vol 54 (1) ◽  
pp. 21-41 ◽  
Author(s):  
Robert J. Kieber ◽  
Robert F. Whitehead ◽  
Seth N. Reid ◽  
Joan D. Willey ◽  
Pamela J. Seaton
Keyword(s):  
North Carolina ◽  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Chromophoric Dissolved Organic Matter

scholarly journals Separating Duff and Litter for Improved Mass and Carbon Estimates

2009 ◽  
Vol 33 (1) ◽  
pp. 29-34 ◽  
Author(s):  
David Chojnacky ◽  
Michael Amacher ◽  
Michael Gavazzi
Keyword(s):  
North Carolina ◽  
Organic Matter ◽  
Forest Inventory ◽  
Mass Ratio ◽  
Forest Inventory And Analysis ◽  
The Us ◽  
Calculated Mass ◽  
Density Values ◽  
Carbon Load ◽  
Forest Soil Organic Matter

Abstract Mass and carbon load estimates, such as those from forest soil organic matter (duff and litter), inform forestry decisions. The US Forest Inventory and Analysis (FIA) Program systematically collects data nationwide: a down woody material protocol specifies discrete duff and litter depth measurements, and a soils protocol specifies mass and carbon of duff and litter combined. Sampling duff and litter separately via the soils protocol would increase accuracy of subsequent bulk density calculations and mass and carbon estimates that use them. At 57 locations in North Carolina, Virginia, and West Virginia, we measured depth, mass, and carbon of duff and litter separately. Duff depth divided by total depth varied from 20% to 56%, duff was 1–4 times denser than litter, and the calculated median carbon-to-mass ratio for hardwood duff (0.37) was less than that for litter (0.45). Using FIA depth measurements, we calculated mass from (1) our mean density values, (2) a mass versus depth regression model we developed, and (3) published density values. Model mass calculations were lower than those using our mean densities, possibly because the latter ignore density differences with layer thickness. Our model could provide valuable mass and carbon estimates if fully developed with future FIA data (duff and litter separated).

scholarly journals Comparing Four Methods of Measuring Soil Organic Matter in North Carolina Soils

2019 ◽  
Vol 83 (2) ◽  
pp. 466-474 ◽  
Author(s):  
Wayne R. Roper ◽  
Wayne P. Robarge ◽  
Deanna L. Osmond ◽  
Joshua L. Heitman
Keyword(s):  
North Carolina ◽  
Organic Matter ◽  
Soil Organic Matter

Nutrient leaching from Acerrubrum leaves by experimental acid rainfall

1991 ◽  
Vol 21 (2) ◽  
pp. 222-229 ◽  
Author(s):  
Christopher S. Potter
Keyword(s):  
North Carolina ◽  
Base Cation ◽  
Nutrient Leaching ◽  
Tree Leaves ◽  
Field Site ◽  
Nutrient Pools ◽  
Leaching Losses ◽  
Foliar Nutrient ◽  
Coweeta Hydrologic Laboratory ◽  
Acid Rainfall

Freshly collected Acerrubrum L. leaves from a regenerating forest stand at the Coweeta Hydrologic Laboratory, North Carolina, were washed with experimental acid rainfall (pH 4.6). Nutrient leaching rates from undamaged leaves were significant for SO42−, K+, Ca2+, and Mg2+, whereas NO3−-N was absorbed from rainfall. Significantly greater leaching of SO42−, K+, Ca2+, and Mg2+, and significantly greater absorption of NO3−-N and NH4+-N, occurred in artificially damaged leaves than in undamaged leaves. Comparisons between leaching transfers and foliar nutrient pools showed that base cation (K+, Ca2+, and Mg2+) leaching losses account for up to 25% of foliar pools, whereas absorption of NO3−-N and NH4+-N from precipitation can increase total foliar N by almost 2%. Projected growing season cation leaching losses (expressed as a percentage of foliar pools) from damaged leaves were in agreement with previously reported whole-canopy leaching fluxes based on analysis of throughfall at the field site. These results suggest that nutrient leaching losses from young, rapidly growing tree leaves are lower than previously published leaching fluxes for more mature forest stands.

Predicting daily flows in ungauged catchments: model regionalization from catchment descriptors at the Coweeta Hydrologic Laboratory, North Carolina

2003 ◽  
Vol 17 (11) ◽  
pp. 2219-2238 ◽  
Author(s):  
Teemu S. Kokkonen ◽  
Anthony J. Jakeman ◽  
Peter C. Young ◽  
Harri J. Koivusalo
Keyword(s):  
North Carolina ◽  
Ungauged Catchments ◽  
Coweeta Hydrologic Laboratory ◽  
Daily Flows
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