NCSU Hoffmann Lab
2012
Grady, J.M.
& Hoffmann, W.A. (2012) Caught in a fire trap: Recurring fire
creates
stable size equilibria in woody resprouters. Ecology, 93:2052-2060.
Hoffmann, W.A., Jaconis,S.Y, Geiger, E.L., Gotsch, S.G., Franco, A.C. (2012) Fuels or microclimate? Understanding the drivers of fire feedbacks at savanna-forest boundaries. Austral Ecology, 37:634-643.
Wall W.A.,
Hoffmann W.A., Wentworth T.R., Gray J.B. & Hohmann M.G. (2012)
Demographic
effects of fire on two endemic plant species in the longleaf
pine-wiregrass
ecosystem. Plant
Ecology, 213: 1093-1104.
Hoffmann, W.A., Geiger, E.L., Gotsch, S., Rossatto, D.R., Silva, L.C.R., Lau, O.L., Haridasan, M., & Franco, A.C. (2012) Ecological thresholds at the savanna-forest boundary: How plant traits, resources and fire govern the distribution of tropical biomes. Ecology Letters, 15:759-768.
2011
Wall, W.A.,
Wentworth, T.R, Shelingoski, S., Stucky, J.M., Leblond, R.J., and
Hoffmann,
W.A. (2011). Lost and Found: Remnants of the Big Savannah and their
relationship to wet savannas in North Carolina. Castanea,
76: 348-363.
Ratnam, J., Bond, W.J., Fensham,
R.J., Hoffmann, W.A., Archibald, S.,
Lehmann, C.E.R., Andersen,
M.T., Higgins,S.I.,
Sankaran, M. (2011) When is a “forest” a savanna, and why does it
matter? Global
Ecology and Biogeography, 20:653-660.
Hoffmann, W.A.,
Marchin, R., Abit, P., and Lau, O.L. (2011) Hydraulic failure and tree
dieback
are associated with high wood density in a temperate forest under
extreme
drought. Global Change Biology, 8: 2731-2742.
Douglas, N.A.,
Wall, W.A., Xiang, Q.Y.,Hoffmann, WA,
Wentworth, T.R., and Hohmann,
M.G., 2011. Recent vicariance and the origin of the rare, edaphically
specialized Sandhills Lily, Lilium
pyrophilum (Liliaceae): evidence from phylogenetic and
coalescent analyses.
Molecular Ecology, 20:2901-2915.
Lehmann, C.E.R..
Archibald, S.,Hoffmann, W.A. and Bond, W.J. (2011) Deciphering the
distribution
of the savanna biome. New Phytologist,
19: 197-209.
Geiger, E.L.,
Gotsch, S.G., do Vale, G.D., Haridasan, M., Franco, A.C., &
Hoffmann, W.A.
(2011) Distinct roles of savanna and forest tree species in
regeneration
following fire suppression in a Brazilian savanna. Journal of Vegetation Science,
22:312-321.
Wall, W.A.,
Hilton, J.L., Wentworth, T.R., Gray, J.B., Hohmann, M.G., &
Hoffmann, W.A.
(2011) Effects of light and temperature on germination of Pyxidanthera
brevifolia
Wells (Diapensiaceae). Journal
of the Torrey Botanical Society,
137: 348-354.
2010
Marchin, R.,
Zeng, H. and Hoffmann, W. A. (2010). Drought-deciduous behavior reduces
nutrient losses from temperate deciduous trees under severe drought. Oecologia, 163:845-854.
Wall, W.A.,
Douglas, N.A., Xiang, Q.Y., Hoffmann, W.A., Wentworth, T.R., &
Hohmann,
M.G. Evidence for range stasis during the latter Pleistocene for the
Atlantic
Coastal Plain endemic genus, Pyxidanthera Michaux. Molecular Ecology, 19:4302-4314.
Silva, L.C.R.,
Haridasan, M., Sternberg, L.S.L., Franco, A.C., & Hoffmann,
W.A. Not all
forests are expanding over central Brazilian savannas. Plant and Soil, 333: 431-442.
Scholz, F.G.,
Bucci, S.J., Hoffmann, W.A., Meinzer, F.C., & Goldstein, G.
Hydraulic lift
in a Neotropical savanna: Experimental manipulation and model
simulations. Agricultural
and Forest Meteorology, 150:
629-639.
Gotsch, S.G., Geiger, E.L., Franco, A.C., Goldstein, G., Meinzer, F.C., Hoffmann, W.A. (2010) Allocation to leaf area and sapwood area affects water relations of co-occurring savanna and forest trees. Oecologia, 163:291-301.
2009
Zhang, Y.-J., Meinzer, F.C., Hao,
G-Y., Scholz, F.G., Bucci, S.J., Giraldo, J.P.,
Cao, K-F., Franco, A.C., Hoffmann, W.A., and Goldstein, G. (2009) Size-dependent mortality in a
Neotropical savanna tree: the role of
height-related adjustments in hydraulic architecture and carbon
allocation Plant Cell and Environment,
32:1456-1466.
Marchin, R.M.,
Bhandari, R.K., Wall, W.A.,
Hohmann, M.G.,
Gray, J.B., Hoffmann, W.A. (2009) Are rare species less shade tolerant
than
common species in fire-prone environments? A test with seven Amorpha (Fabaceae) species. Plant Ecology, 205:249–260.
Giambelluca,
T.W., Scholz, F.G., Bucci, S.J., Meinzer, F.C.,
Goldstein, G., Hoffmann, W.A., Franco, A.C., Buchert, M.P. (2009) Evapotranspiration
and energy balance of Brazilian savannas with contrasting tree density.
Agricultural and Forest Meteorology,
149:1365-1376.
Rossatto, D.R.,
Hoffmann, W.A., Franco, A.C. (2009) Differences in growth patterns
between co-occurring
forest and savanna species affect the forest-savanna boundary. Functional
Ecology, 23: 689-698.
Rossatto, D.R.,
Hoffmann, W.A., Franco, A.C. (2009)
Características estomáticas de pares congenéricos de cerrado e mata de
galeria
crescendo numa região transicional no Brasil central (Stomatal
characteristic
of congeneric savanna and forest species growing in a transitional
region of
central Brazil). Acta Botanica
Brasilica
23:499-508.
Hoffmann, W.A.,
Franco, A.C. (2009) The importance of evolutionary history in studies
of plant
physiological ecology: examples from cerrados and forests of central
Brazil.
Special issue of Brazilian Journal of
Plant Physiology, 20:247-256
Hoffmann, W.A.,
R. Adasme, M. Haridasan, M.
Carvalho, E.
L. Geiger, M. A. B. Pereira, S. G. Gotsch, and A. C. Franco (2009).
Tree
topkill, not mortality, governs the dynamics of alternate stable states
at
savanna-forest boundaries under frequent fire in central Brazil. Ecology
90:1326-1337.
2008
Silva, L.C.R, L.
Sternberg, M. Haridasan, W. Hoffmann, F. Miralles-Wilhelm. A. C Franco
(2008) Expansion of
gallery forests into central
Brazilian savannas. Global Change
Biology, 14, 2108-2118.
Hao, G.-Y. Hoffmann, W.A. Scholz,
F.G.
Bucci, S.J. Meinzer, F.C. Franco, A.C. Cao, K.-F. Goldstein, G. (2008) Stem and leaf hydraulics
of congeneric tree
species from adjacent tropical savanna and forest ecosystems. Oecologia 155:405-415.
Goldstein, G,
Meinzer, F.C. Bucci, S.J., Scholz, F.G. Franco, A.C. and Hoffmann, W.A. (2008) Water economy of
Neotropical savanna trees: six paradigms revisited.
Tree Physiology 28:395–404.
Hoffmann, W.A. and M. Haridasan (2008) The invasive grass, Melinis minutiflora, inhibits tree regeneration in a Neotropical Savanna. Austral Ecology 33:29-36.
2007
Jackson,
R.B., Farley, K.A., Hoffmann, W.A., Jobbagy, E.G., McCulley, R.L. (2007) Carbon and water tradeoffs
in conversions to
forests and shrublands. Pp 237-246 in J. Canadell, D. Pataki, L.
Pitelka (eds.)
Terrestrial
Ecosystems in a Changing World.
Jackson, R. B., W. T. Pockman, W. A. Hoffmann, T. M. Bleby, and C. Armas. 2007. Structure and function of root systems. Pp 151-173 in F. I. Pugnaire and F. Valladeres (eds). Handbook of Plant Functional Ecology, 2nd Edition. Marcel Dekker, Inc.
2006
Lahoreau, G., S.
Barot, J. Gignoux, W.A. Hoffmann, S.A. Setterfield, and P. R. Williams.
2006.
Positive effect of seed size on seedling survival in fire-prone
savannas of
Australia, Brazil and West Africa.
Journal of Tropical Ecology,
22:719-722
.
2005
Hoffmann, W.A., Silva, E.R.,
Machado, G.C., Bucci, S.J., Scholz, F.G., Goldstein, G., Meinzer, F.C. 2005. Seasonal leaf dynamics
across a tree
density gradient in a Brazilian savanna. Oecologia,
145: 307-316.
Hoffmann, W.A.,
Franco, A.C., Moreira, M.Z., Haridasan,
M. 2005. Specific leaf area explains
differences in leaf traits between congeneric savanna and forest trees.
Functional Ecology
19: 932-940.
Sternberg,
L.S.L., Bucci, S., Franco, A.C., Goldstein, G., Hoffmann, W.A.,
Moreira, M.Z.,
Scholz, F. 2005. Long range lateral root activity by Neo-tropical
savanna
trees. Plant and Soil, 270:169-178.
Hoffmann, W.A.
2005.
Ecologia comparativa de espécies lenhosas de cerrado e de mata
(Comparative
ecology of savanna and forest woody plants). Pp. 155- 166 in A. Scariot, J. M.
Felfili, and J. C. Sousa-Silva (eds.) Cerrado:
Ecologia, Biodiversidade e Conservação, Ministério do
Meio Ambiente, Brasília, Brazil.
2004
Hoffmann, W.A., Orthen, B. and
Franco, A.C. 2004. Constraints to seedling success of savanna and
forest trees across the savanna-forest boundary.
Oecologia 140:252-260.
Hoffmann, W.A.,
Lucatelli, V. M. P. C., Silva, F. J.,
Azeuedo, I. N. C., Marinho, M. da S., Albuquerque, A. M. S., Lopes, A.
de O.,
Moreira, S. P. 2004. Impact
of the invasive grass Melinis minutiflora
at the savanna-forest ecotone in the Brazilian Cerrado. Diversity
and Distributions, 10: 99-103.
Bucci S.J.,
Scholz F.G., Goldstein G., Meinzer F.C , Hinojosa J.A., Hoffmann W.A.,
and
Franco, A.C. 2004. Processes preventing nocturnal equilibrium between
leaf and
soil water potential in tropical savanna woody species, Tree
Physiology, 24: 1119-1127.
2003
Hoffmann, W.A., B. Orthen, and
P.K.V. Nascimento. 2003. Comparative fire ecology of tropical savanna
and forest
trees. Functional Ecology, 17:
720-726
Hoffmann, W.A., W. Schroeder
and R.B. Jackson. 2003. Regional feedbacks among climate, fire, and
tropical
deforestation. Journal of Geophysical
Research – Atmospheres, 108, DOI: 2003JD003494.
Hoffmann, W.A. and O.T.
Solbrig. 2003. The
role of topkill in
the differential response of savanna woody species to fire. Forest
Ecology and Management, 180:273-286.
Hoffmann, W.A. and A.C. Franco.
2003. Comparative growth analysis of tropical savanna and forest trees
using
phylogenetically-independent contrasts. Journal
of Ecology, 91: 475-484.
2002
Hoffmann, W. A.,
W. Schroeder, and R. B. Jackson. 2002. Positive
feedbacks of fire, climate, and vegetation change and the conversion of
tropical savannas. Geophysical
Research Letters, 15: doi: 10.1029/2002GL015424
Dickinson, R.E.,
J.A. Berry, G.B. Bonan, G.J. Collatz, C.B. Field, I.Y. Fung, M.
Goulden, W.A.
Hoffmann, R. Jackson, R. Myneni, P. Sellers, M. Shaikh. 2002. Nitrogen
controls
on climate model evapotranspiration.
Journal of Climate,
15:278-295.
Hoffmann, W.A.
and H. Poorter. 2002. Avoiding bias in calculations of relative growth
rate. Annals of Botany 80:37-42.
Hoffmann,
W.A. 2002. Direct and indirect effects of fire on radial growth of
cerrado
savanna trees. Journal of Tropical Ecology 18:137-142.
Silva,
G.F., R.L.C. Ferreira, W.A. Hoffmann, N.C. Fiedler, G. Janin. 2002.
Optimization applied to management of natural forests.
ETFRN
News 36: 26-27.
Hoffmann,
W.A. and Moreira, A.G. 2002
The Role of
Fire in Population Dynamics of Woody Plants, Pp. 159-177 in P.S.
Oliveira and
R.J. Marquis (eds.) The Cerrados of
Brazil: Ecology and Natural History of a Neotropical Savanna,
Columbia
University Press, New York.
2000
Hoffmann, W.A.,
F.A. Bazzaz, N.J. Chatterton, P. Harrison, and R.B. Jackson. 2000.
Elevated CO2
enhances resprouting of a tropical savanna tree.
Oecologia,
123(3) 312-317.
Hoffmann, W. A.
and R.B. Jackson. 2000. Vegetation-climate feedbacks in the conversion
of
tropical savanna to grassland. Journal of Climate 13:1593-1602.
Hoffmann, W. A.
2000. Post-establishment
seedling
success of savanna and forest species in the Brazilian Cerrado. Biotropica, 32(1):62-69
1999
Jackson R.B., L.
A Moore, W. A. Hoffmann, W. T. Pockman, and C. R. Linder. 1999.
Ecosystem
rooting depth determined with caves and DNA. Proceedings
of the National Academy of Science 96:11387-11392.
Hoffmann, W. A.
1999. Fire and population dynamics of woody plants in a Neotropical
savanna:
matrix model predictions. Ecology
80:1354-1369.
Jackson, R. B.,
W. T. Pockman, and W. A. Hoffmann. 1999. Structure and function of root
systems. Pp 195-220 in: F. I. Pugnaire and F. Valladeres (eds). Handbook of Plant Functional Ecology, 1st
Edition. Marcel Dekker, Inc.
1998
Hoffmann, W. A.
1998. Post-burn reproduction of woody plants in a Neotropical savanna:
the
relative importance of sexual and vegetative reproduction. Journal of Applied Ecology 35:422-433.
1996
Hoffmann, W. A.
1996. The effects of cover and fire on seedling establishment in a
neotropical
savanna. Journal of Ecology.
84:383-393
Archer,
S., M.
Coughenour, C. Dall'Aglio, C. W. Fernandez, J. Hay, W. Hoffmann, C.
Klink, J.
F. Silva, and O. T. Solbrig. 1996. Savanna biodiversity and ecosystem
properties. Pp 207-215 in O. T. Solbrig, E. Medina, J. F. Silva (eds), Biodiversity
and Savanna Ecosystem
Properties.
Springer-Verlag, Berlin.