@article{coulston_westfall_wear_edgar_prisley_treiman_abt_smith_2018, title={Annual Monitoring of US Timber Production: Rationale and Design}, volume={64}, ISSN={["1938-3738"]}, DOI={10.1093/forsci/fxy010}, abstractNote={Understanding roundwood production in the United States at fine spatial and temporal scales is needed to support a range of analyses for decision making. Currently, estimates of county-level roundwood production are available at various time intervals for different regions of the country and for different products. Here we present our reasoning for moving to an annual timber products monitoring program and further present a comparison of sample designs to facilitate an annual program without increased effort. We found that both probability proportional to size and stratified simple random sampling designs were viable options, but the stratified simple random sampling design provided more flexibility. This flexibility was deemed important to target emerging markets and to enable sampling with certainty of specific firms. Our results lay the foundations for moving to an annual timber products output monitoring design in support of market, sustainability, and policy analyses as well as projections.}, number={5}, journal={FOREST SCIENCE}, author={Coulston, John W. and Westfall, James A. and Wear, David N. and Edgar, Christopher B. and Prisley, Steven P. and Treiman, Thomas B. and Abt, Robert C. and Smith, W. Brad}, year={2018}, month={Oct}, pages={533–543} }
 @article{suttles_singh_vose_martin_emanuel_coulston_saia_crump_2018, title={Assessment of hydrologic vulnerability to urbanization and climate change in a rapidly changing watershed in the Southeast US}, volume={645}, ISSN={["1879-1026"]}, url={http://dx.doi.org/10.1016/j.scitotenv.2018.06.287}, DOI={10.1016/j.scitotenv.2018.06.287}, abstractNote={This study assessed the combined effects of increased urbanization and climate change on streamflow in the Yadkin-Pee Dee watershed (North Carolina, USA) and focused on the conversion from forest to urban land use, the primary land use transition occurring in the watershed. We used the Soil and Water Assessment Tool to simulate future (2050-2070) streamflow and baseflow for four combined climate and land use scenarios across the Yadkin-Pee Dee River watershed and three subwatersheds. The combined scenarios pair land use change and climate change scenarios together. Compared to the baseline, projected streamflow increased in three out of four combined scenarios and decreased in one combined scenario. Baseflow decreased in all combined scenarios, but decreases were largest in subwatersheds that lost the most forest. The effects of land use change and climate change were additive, amplifying the increases in runoff and decreases in baseflow. Streamflow was influenced more strongly by climate change than land use change. However, for baseflow the reverse was true; land use change tended to drive baseflow more than climate change. Land use change was also a stronger driver than climate in the most urban subwatershed. In the most extreme land use and climate projection the volume of the 1-day, 100 year flood nearly doubled at the watershed outlet. Our results underscore the importance of forests as hydrologic regulators buffering streamflow and baseflow from hydrologic extremes. Additionally, our results suggest that land managers and policy makers need to consider the implications of forest loss on streamflow and baseflow when planning for future urbanization and climate change adaptation options.}, journal={SCIENCE OF THE TOTAL ENVIRONMENT}, author={Suttles, Kelly M. and Singh, Nitin K. and Vose, James M. and Martin, Katherine L. and Emanuel, Ryan E. and Coulston, John W. and Saia, Sheila M. and Crump, Michael T.}, year={2018}, month={Dec}, pages={806–816} }
 @article{coulston_koch_smith_sapio_2008, title={Invasive forest pest surveillance: survey development and reliability}, volume={38}, ISSN={["0045-5067"]}, DOI={10.1139/X08-076}, abstractNote={Worldwide, a large number of potential pest species are introduced to locations outside their native ranges; under the best possible prevention scheme, some are likely to establish one or more localized populations. A comprehensive early detection and rapid-response protocol calls for surveillance to determine if a pest has invaded additional locations outside its original area of introduction. In this manuscript, we adapt and spatially extend a two-stage sampling technique to determine the required sample size to substantiate freedom from an invasive pest with a known level of certainty. The technique, derived from methods for sampling livestock herds for disease presence, accounts for the fact that pest activity may be low at a coarse spatial scale (i.e., among forested landscapes) but high at a fine scale (i.e., within a given forested landscape). We illustrate the utility of the approach by generating a national-scale survey based on a risk map for a hypothetical forest pest species threatening the United States. These techniques provide a repeatable, cost-effective, practical framework for developing broad-scale surveys to substantiate freedom from non-native invasive forest pests with known statistical power.}, number={9}, journal={CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE}, author={Coulston, John W. and Koch, Frank H. and Smith, William D. and Sapio, Frank J.}, year={2008}, month={Sep}, pages={2422–2433} }
 @article{coulston_riitters_mcroberts_reams_smith_2006, title={True versus perturbed forest inventory plot locations for modeling: a simulation study}, volume={36}, ISSN={["1208-6037"]}, DOI={10.1139/X05-265}, abstractNote={USDA Forest Service Forest Inventory and Analysis plot information is widely used for timber inventories, forest health assessments, and environmental risk analyses. With few exceptions, true plot locations are not revealed; the plot coordinates are manipulated to obscure the location of field plots and thereby preserve plot integrity. The influence of perturbed plot locations on the development and accuracy of statistical models is unknown. We tested the hypothesis that the influence is related to the spatial structure of the data used in the models. For ordinary kriging we examined the difference in mean square error based on true and perturbed plot locations across a range of spatial autocorrelations. We also examined the difference in mean square error for regression models developed with true and perturbed plot locations across a range of spatial autocorrelations and spatial resolutions. Perturbing plot locations did not significantly influence the accuracy of kriging estimates, but in some situations linear regression model development and accuracy were significantly influenced. Unless the independent variable has high spatial autocorrelation, only coarse spatial resolution data should be used to develop linear regression models.}, number={3}, journal={CANADIAN JOURNAL OF FOREST RESEARCH}, author={Coulston, John W. and Riitters, Kurt H. and McRoberts, Ronald E. and Reams, Greg A. and Smith, William D.}, year={2006}, month={Mar}, pages={801–807} }
 @article{mcroberts_holden_nelson_liknes_moser_lister_king_lapoint_coulston_smith_et al._2005, title={Estimating and circumventing the effects of perturbing and swapping inventory plot locations}, volume={103}, number={6}, journal={Journal of Forestry}, author={McRoberts, R. E. and Holden, G. R. and Nelson, M. D. and Liknes, G. C. and Moser, W. K. and Lister, A. J. and King, S. L. and Lapoint, E. B. and Coulston, J. W. and Smith, W. B. and et al.}, year={2005}, pages={275–279} }
 @article{coulston_ambrose_riiters_conkling_2005, title={Forest health monitoring: 2002 National Technical Report}, journal={Forest health monitoring : 2002 national technical report}, publisher={Asheville, NC : U.S. Dept. of Agriculture, Forest Service, Southern Research Station}, author={Coulston, J. and Ambrose, M. J. and Riiters, K. H. and Conkling, B. L.}, year={2005} }
 @article{coulston_ambrose_riiters_conkling_smith_2005, title={Forest health monitoring: 2003 National Technical Report}, journal={Forest health monitoring : 2003 national technical report}, publisher={Asheville, NC : U.S. Dept. of Agriculture, Forest Service, Southern Research Station}, author={Coulston, J. W. and Ambrose, M. J. and Riiters, K. H. and Conkling, B. L. and Smith, W. D.}, year={2005} }
 @article{riitters_coulston_2005, title={Hot spots of perforated forest in the eastern United States}, volume={35}, ISSN={["1432-1009"]}, DOI={10.1007/s00267-003-0220-1}, number={4}, journal={ENVIRONMENTAL MANAGEMENT}, author={Riitters, KH and Coulston, JW}, year={2005}, month={Apr}, pages={483–492} }
 @article{coulston_reams_mcroberts_smith_2005, title={Practical considerations when using perturbed Forest Inventory plot locations to develop spatial models: A case study}, journal={Proceedings of the Sixth Annual Forest Inventory and Analysis Symposium}, publisher={Washington: United States Department of Agriculture, Forest Service}, author={Coulston, J. W. and Reams, G. A. and McRoberts, R. E. and Smith, W. D.}, year={2005} }
 @article{coulston_riitters_2005, title={Preserving biodiversity under current and future climates: a case study}, volume={14}, DOI={10.1111/j.1466-822x.2004.00135.x}, abstractNote={Aim The conservation of biological and genetic diversity is a major goal of reserve systems at local, regional, and national levels. The International Union for the Conservation of Nature and Natural Resources suggests a 12% threshold (area basis) for adequate protection of biological and genetic diversity of a plant community. However, thresholds based on area may protect only a small portion of the total diversity if the locations are chosen without regard to the variation within the community. The objectives of this study were to demonstrate methods to apply a coarse-filter approach for identifying gaps in the current reserve system of the Psuedotsuga menziesii (Douglas-fir) forest type group based on current climatic conditions and a global climate change scenario. Location Western United States. Method We used an ecological envelope approach that was based on seven bioclimatic factors, two topographic factors, and two edaphic factors. Multivariate factor analysis was then used to reduce the envelope to two dimensions. The relative density of habitat and protected areas were identified in each part of the envelope based on the current climate and potential future climate. We used this information to identify gaps in the reserve system. Results Although the protected areas occurred in all parts of the envelope, most existed in colder and drier areas. This was true for both the current climate and potential future climate. Main conclusion To protect more of the ecological envelope, future conservation efforts would be most effective in western Oregon, north-western Washington, and north-western California.}, number={1}, journal={Global Ecology and Biogeography}, author={Coulston, J. W. and Riitters, K. H.}, year={2005}, pages={31–38} }
 @article{riitters_wickham_coulston_2004, title={A preliminary assessment of Montreal Process indicators of forest fragmentation for the United States}, volume={91}, ISSN={["1573-2959"]}, DOI={10.1023/B:EMAS.0000009240.65355.92}, number={1-3}, journal={ENVIRONMENTAL MONITORING AND ASSESSMENT}, author={Riitters, KH and Wickham, JD and Coulston, JW}, year={2004}, month={Feb}, pages={257–276} }
 @article{coulston_riitters_smith_2004, title={A preliminary assessment of the Montreal process indicators of air pollution for the United States}, volume={95}, ISSN={["1573-2959"]}, DOI={10.1023/B:EMAS.0000029895.96868.f8}, number={1-3}, journal={ENVIRONMENTAL MONITORING AND ASSESSMENT}, author={Coulston, JW and Riitters, KH and Smith, GC}, year={2004}, month={Jul}, pages={57–74} }
 @article{riitters_wickham_coulston_2004, title={Use of road maps in national assessments of forest fragmentation in the United States}, volume={9}, DOI={10.5751/es-01210-090213}, abstractNote={Riitters, K., J. Wickham and J. Coulston 2004. Use of Road Maps in National Assessments of Forest Fragmentation in the United States. Ecology and Society 9(2):13. https://doi.org/10.5751/ES-01210-090213}, number={2}, journal={Ecology and Society}, author={Riitters, K. and Wickham, J. and Coulston, J.}, year={2004} }
 @article{smith_coulston_jepsen_prichard_2003, title={A national ozone biomonitoring program - Results from field surveys of ozone sensitive plants in northeastern forests (1994-2000)}, volume={87}, ISSN={["0167-6369"]}, DOI={10.1023/A:1024879527764}, number={3}, journal={ENVIRONMENTAL MONITORING AND ASSESSMENT}, author={Smith, G and Coulston, J and Jepsen, E and Prichard, T}, year={2003}, month={Sep}, pages={271–291} }
 @article{coulston_riitters_2003, title={Geographic analysis of forest health indicators using spatial scan statistics}, volume={31}, ISSN={["1432-1009"]}, DOI={10.1007/s00267-002-0023-9}, number={6}, journal={ENVIRONMENTAL MANAGEMENT}, author={Coulston, JW and Riitters, KH}, year={2003}, month={Jun}, pages={764–773} }
 @article{riitters_coulston_wickham_2003, title={Localizing national fragmentation statistics with forest type maps}, volume={101}, number={4}, journal={Journal of Forestry}, author={Riitters, K. H. and Coulston, J. W. and Wickham, J. D.}, year={2003}, pages={18–22} }
 @article{coulston_smith_smith_2003, title={Regional assessment of ozone sensitive tree species using bioindicator plants}, volume={83}, ISSN={["0167-6369"]}, DOI={10.1023/A:1022578506736}, number={2}, journal={ENVIRONMENTAL MONITORING AND ASSESSMENT}, author={Coulston, JW and Smith, GC and Smith, WD}, year={2003}, month={Apr}, pages={113–127} }