@article{sampson_albaugh_johnson_allen_zarnoch_2004, title={Monthly leaf area index estimates from point-in-time measurements and needle phenology for Pinus taeda (vol 33, pg 2477, 2003)}, volume={34}, number={3}, journal={Canadian Journal of Forest Research}, author={Sampson, D. A. and Albaugh, T. J. and Johnson, K. H. and Allen, H. L. and Zarnoch, S. J.}, year={2004} }
 @article{sampson_johnsen_ludovici_albaugh_maier_2001, title={Stand-scale correspondence in empirical and simulated labile carbohydrates in loblolly pine}, volume={47}, number={1}, journal={Forest Science}, author={Sampson, D. A. and Johnsen, K. H. and Ludovici, K. H. and Albaugh, T. J. and Maier, C. A.}, year={2001}, pages={60–68} }
 @article{cooter_richman_lamb_sampson_2000, title={A climate change database for biological assessments in the southeastern United States: Development and case study}, volume={44}, ISSN={["0165-0009"]}, DOI={10.1023/A:1005514709376}, number={1-2}, journal={CLIMATIC CHANGE}, author={Cooter, EJ and Richman, MB and Lamb, PJ and Sampson, DA}, year={2000}, month={Jan}, pages={89–121} }
 @article{sampson_allen_1999, title={Regional influences of soil available water-holding capacity and climate, and leaf area index on simulated loblolly pine productivity}, volume={124}, ISSN={["0378-1127"]}, DOI={10.1016/s0378-1127(99)00054-7}, abstractNote={We simulated loblolly pine (Pinus taeda L.) net canopy assimilation, using BIOMASS version 13.0, for the southeastern United States (1° latitude by 1° longitude grid cells) using a 44-year historical climate record, estimates of available water-holding capacity from a natural resource conservation soils database, and two contrasting leaf area indices (LAI) (low; peak LAI of 1.5 m2 m−2 projected, and high; 3.5 m2 m−2). Median (50th percentile) available water-holding capacity varied from 100 to 250 mm across the forest type for a normalized 1.25 m soil profile. Climate also varied considerably (growing season precipitation ranged from 200 to 1600 mm while mean growing season temperature ranged from 13° to 26°C). Net canopy assimilation ranged from 9.3 to 19.2 Mg C ha−1 a−1 for high LAI and the 95th percentile of available water-holding capacity simulations. We examined the influence of soil available water-holding capacity, and annual variation in temperature and precipitation, on net canopy assimilation for three cells of similar latitude. An asymptotic, hyperbolic relationship was found between the 44-year average net canopy assimilation and soil available water-holding capacity. Shallow soils had, naturally, low water-holding capacity (<100 mm) and, subsequently, low productivity. However, median available water-holding capacity (125–150 mm) was sufficient to maintain near maximum production potential in these cells. Simulations were also conduced to examine the direct affects of soil available water on photosynthesis (PN) and stomatal conductance (gS) on net canopy assimilation. In the absence of water limitations on PN and gS, net canopy assimilation increased by only 10% or less over most of the loblolly pine region (when compared to simulations for median available water-holding capacity with water influences in place). However, the production differences between high and low LAI, at the median soil available water-holding capacity, ranged from 30% to 60% across the loblolly pine range. Vapor pressure deficit was found to dramatically reduce productivity for stands of similar LAI, incident radiation, rainfall, and available water-holding capacity. Thus, these simulations suggest that, regionally, loblolly pine productivity may be more limited by low LAI than by soil available water-holding capacity (for soils of median available water-holding capacity or greater). In addition, high atmospheric forcing for water vapor will reduce net assimilation for regions of otherwise favorable available water and LAI.}, number={1}, journal={FOREST ECOLOGY AND MANAGEMENT}, author={Sampson, DA and Allen, HL}, year={1999}, month={Nov}, pages={1–12} }
 @article{sampson_vose_allen_1998, title={A conceptual approach to stand management using leaf area index as the integral of site structure, physiological function, and resource supply}, number={-20}, journal={Proceedings of the Ninth Biennial Southern Silviculture Research Conference : Clemson, South Carolina, February 25-27, 1997}, publisher={Asheville, NC : U.S. Dept. of Agriculture, Forest Service, Southern Research Station}, author={Sampson, D. A. and Vose, J. M. and Allen, H. L.}, year={1998}, pages={447} }
 @inbook{sampson_dougherty_allen_1998, title={An index for assessing climate change and elevated carbon dioxide effects on loblolly pine productivity}, ISBN={0387948511}, DOI={10.1007/978-1-4612-2178-4_21}, abstractNote={Loblolly pine (Pinus taeda L.) forests represent the major forest type in the southern United States. The loblolly pine region extends from Delaware and centraI Maryland south to central Florida and west to eastern Oklahoma and Texas (Fowells, 1965). The wide range of loblolly pine largely results from its rapid growth and its successful adaptation to many varieties of soil types and environmental conditions. These and other factors have made loblolly pine an important commercial species in the region. However, although loblolly pine occurs on a many types of sites, its commercial value, as measured by net primary productivity (NPP), varies tremendously and is strongly determined by variability in the local climate and stand and site conditions (McNulty et al., 1997). Uncertainty regarding potential changes in climate as a result of increasing atmospheric carbon dioxide (CO2) concentration has caused concern for the future commercial viability of loblolly pine forests.}, booktitle={The productivity and sustainability of Southern forest ecosystems in a changing environment.  (Ecological studies; 128)}, publisher={New York: Springer}, author={Sampson, D. A. and Dougherty, P. M. and Allen, Howard}, editor={Mickler, R. A. and Fox, S.Editors}, year={1998}, pages={367–389} }
 @inbook{dougherty_allen_kress_murthy_maier_albaugh_sampson_1998, title={An investigation of the impacts of elevated CO2, irrigation, and fertilization on the physiology and growth of loblolly pine}, ISBN={0387948511}, DOI={10.1007/978-1-4612-2178-4_9}, abstractNote={Southern pine forests that are dominated by loblolly pine (Pinus taeda L.) are the most intensively managed forests in the United States. They provide more than 50% of the total softwood being harvested annually in the United States and represent the first or second most economically important agricultural crops in nine of the twelve southeastern states (U.S. Department Agriculture Forest Service, 1988). Thus, any changes in environmental conditions that will alter productivity of these forests will have important ecological, economical, and sociological consequences. Over the past several decades, the environment of southeastern forests has been changing. Increases in acidic deposition (SO4 and NOx), nitrogen inputs (Husar, 1986), atmospheric CO2 concentration (Conway et al., 1988; Keeling et al., 1989), and tropospheric ozone have all been documented to parallel the increase in population since the beginning of the industrial revolution. Climate change has also been predicted for the southeastern United States for the future. Each of these atmospheric and climatic elements that are being altered by human activities has the potential to affect productivity of southern pine forests. Nutrient availability, water availability, atmospheric CO2 concentration, and temperature are presently the principal factors that are limiting the productivity of southern pine forests. Thus, it is extremely important that we understand how changes in these factors will interact to affect physiological processes of forest stands.}, booktitle={The productivity and sustainability of Southern forest ecosystems in a changing environment.  (Ecological studies; 128)}, publisher={New York: Springer}, author={Dougherty, P. M. and Allen, Howard and Kress, L. W. and Murthy, R. and Maier, C. and Albaugh, T. J. and Sampson, D. A.}, editor={Mickler, R. A. and Fox, S.Editors}, year={1998}, pages={149–168} }
 @article{sampson_allen_1998, title={Light attenuation in a 14-year-old loblolly pine stand as influenced by fertilization and irrigation}, volume={13}, ISSN={["0931-1890"]}, DOI={10.1007/s004680050190}, number={2}, journal={TREES-STRUCTURE AND FUNCTION}, author={Sampson, DA and Allen, HL}, year={1998}, month={Nov}, pages={80–87} }
 @article{sampson_allen_1995, title={Direct and indirect estimates of leaf area index (LAI) for lodgepole and loblolly pine stands}, volume={9}, number={3}, journal={Trees (Berlin, Germany)}, author={Sampson, D. A. and Allen, H. L.}, year={1995}, pages={119} }