@article{hall_stape_bullock_frederick_wright_scolforo_cook_2020, title={A Growth and Yield Model for Eucalyptus benthamii in the Southeastern United States}, volume={66}, ISSN={["1938-3738"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85081127822&partnerID=MN8TOARS}, DOI={10.1093/forsci/fxz061}, abstractNote={Abstract}, number={1}, journal={FOREST SCIENCE}, author={Hall, Kevin B. and Stape, J. L. and Bullock, Bronson P. and Frederick, Doug and Wright, Jeff and Scolforo, Henrique F. and Cook, Rachel}, year={2020}, month={Feb}, pages={25–37} }
 @article{maier_albaugh_cook_hall_mcinnis_johnsen_johnson_rubilar_vose_2017, title={Comparative water use in short-rotation Eucalyptus benthamii and Pinus taeda trees in the Southern United States}, volume={397}, ISSN={["1872-7042"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85018772782&partnerID=MN8TOARS}, DOI={10.1016/j.foreco.2017.04.038}, abstractNote={Short rotation Eucalyptus plantations offer great potential for increasing wood-fiber production in the southern United States. Eucalyptus plantations can be highly productive (>35 m3 ha−1 year−1), but they may use more water than intensively managed pine (primarily Pinus taeda L.) plantations. This has raised concern about how expansion of Eucalyptus plantations will affect water resources. We compared tree water use, stem growth, and WUE (kg wood per m3 water transpired) in adjacent nine-year-old Eucalyptus benthamii and P. taeda plantations with similar stand density and leaf area. Sap flux (Fd, g cm−2 s−1) was measured continuously over one year using thermal dissipation probes. Stem biomass, stem growth, tree water use (Et, L day−1), canopy transpiration per unit leaf area (El, mmol m−2 s−1), and canopy stomatal conductance (Gs, mmol m−2 s−1) were quantified. Eucalyptus had higher daily Fd (196.6 g cm−2 day−1) and mean daily Et (24.6 L day−1) than pine (105.8 g cm−2 day−1, 15.2 L day−1). Eucalyptus exhibited a seasonally bimodal pattern in daily Et that did not occur in pine. Monthly Et was 23–51% higher in Eucalyptus and differences between species were greatest in the spring and fall. Annual Et was 32% higher in Eucalyptus (9.13 m3 H2O year−1) than pine (5.79 m3 H2O year−1). Annual stem biomass increment was greater in Eucalyptus (Eucalyptus: 22.9; pine: 11.8 kg tree−1 year−1), and Eucalyptus had greater WUE (Eucalyptus: 2.86; pine 1.72 kg biomass m−3 H2O year−1). Pine exhibited a lower seasonal minimum and higher seasonal maximum leaf area index (LAI). At low LAI, there was no significant difference between species in El or Gs; however, at maximum LAI, pine El and Gs were 46 and 43%, respectively of rates observed in Eucalyptus. The species differed in Gs response to vapor pressure deficit (D). At a similar reference Gs (Gs,ref at D = 1 kPa), pine exhibited greater stomatal sensitivity to D. These results suggest that (1) Eucalyptus trees had higher sap flux and total water use than pine, (2) Eucalyptus had greater stem growth and WUE, and (3) species differences in water use were driven primarily by differences in El and Gs.}, journal={FOREST ECOLOGY AND MANAGEMENT}, author={Maier, Chris A. and Albaugh, Timothy J. and Cook, Rachel I. and Hall, Kevin and McInnis, Daniel and Johnsen, Kurt H. and Johnson, John and Rubilar, Rafael A. and Vose, James M.}, year={2017}, month={Aug}, pages={126–138} }
 @article{hakamada_neto_lemos_silva_otto_hall_stape_2016, title={Validation of an efficient visual method for estimating leaf area index in clonal Eucalyptus plantations}, volume={78}, ISSN={["2070-2639"]}, DOI={10.2989/20702620.2016.1201641}, abstractNote={Leaf area index (LAI) is a key ecophysiological parameter in forest stands because it characterises the interface between atmospheric processes and plant physiology. Several indirect methods for estimating LAI have been developed. However, these methods have limitations that can affect the estimates. This study aimed to evaluate the accuracy and applicability of a visual method for estimating LAI in clonal Eucalyptus grandis × E. urophylla plantations and to compare it with hemispherical photography, ceptometer and LAI-2000® estimates. Destructive sampling for direct determination of the actual LAI was performed in 22 plots at two geographical locations in Brazil. Actual LAI values were then used to develop a field guide with photographic images representing an LAI range of 1.0–5.0 m2 m−2 (leaf area/ground area). The visual LAI estimation guide was evaluated with 17 observers in the field. The average difference between actual LAI and visual LAI estimation was 12% and the absolute difference between the two methods was less than or equal to 0.5 m2 m−2 in 77% of plots. Pearson’s correlation coefficients were high between actual LAI and hemispherical photographs (0.8), visual estimation (0.93) and LAI-2000® (0.99) and low for the ceptometer (0.18). However, absolute values differed among methods, with the average difference between the actual and estimated LAI of [12]% for visual estimation, 28% for the LAI-2000®, 37% for the ceptometer and −43% for hemispherical photographs. The LAI-2000® and ceptometer overestimated LAI in all plots, whereas hemispherical photographs underestimated the values in all measurements, showing that these methods need calibration to be used. No differences were observed between actual LAI and visual estimates across stand ages of 2–8 years and LAI of 1.5–5.3 m2 m−2 (P > 0.05). The results show that visual estimation of LAI in Eucalyptus stands is a practical method that is unaffected by atmospheric characteristics and can be used on an operational scale.}, number={4}, journal={SOUTHERN FORESTS-A JOURNAL OF FOREST SCIENCE}, author={Hakamada, Rodrigo and Neto, Carmeni Giunti and Lemos, Cristiane C. Z. and Silva, Sergio R. and Otto, Marina S. G. and Hall, Kevin B. and Stape, Jose L.}, year={2016}, month={Nov}, pages={275–281} }