@article{gotsch_geiger_franco_goldstein_meinzer_hoffmann_2019, title={Allocation to leaf area and sapwood area affects water relations of co-occurring savanna and forest trees (vol 163, pg 291, 2010)}, volume={189}, ISSN={["1432-1939"]}, DOI={10.1007/s00442-018-04327-3}, abstractNote={The original version of this article unfortunately contained a mistake. The Electronic supplementary material (ESM) was accompanying this article by mistake.}, number={2}, journal={OECOLOGIA}, author={Gotsch, Sybil G. and Geiger, Erika L. and Franco, Augusto C. and Goldstein, Guillermo and Meinzer, Frederick C. and Hoffmann, William A.}, year={2019}, month={Feb}, pages={563–563} }
 @misc{hoffmann_geiger_gotsch_rossatto_silva_lau_haridasan_franco_2012, title={Ecological thresholds at the savanna-forest boundary: how plant traits, resources and fire govern the distribution of tropical biomes}, volume={15}, ISSN={["1461-0248"]}, DOI={10.1111/j.1461-0248.2012.01789.x}, abstractNote={Abstract}, number={7}, journal={ECOLOGY LETTERS}, author={Hoffmann, William A. and Geiger, Erika L. and Gotsch, Sybil G. and Rossatto, Davi R. and Silva, Lucas C. R. and Lau, On Lee and Haridasan, M. and Franco, Augusto C.}, year={2012}, month={Jul}, pages={759–768} }
 @article{hoffmann_jaconis_mckinley_geiger_gotsch_franco_2012, title={Fuels or microclimate? Understanding the drivers of fire feedbacks at savanna-forest boundaries}, volume={37}, ISSN={["1442-9985"]}, DOI={10.1111/j.1442-9993.2011.02324.x}, abstractNote={Abstract}, number={6}, journal={AUSTRAL ECOLOGY}, author={Hoffmann, William A. and Jaconis, Susany. and Mckinley, Kristen L. and Geiger, Erika L. and Gotsch, Sybil G. and Franco, Augusto C.}, year={2012}, month={Sep}, pages={634–643} }
 @article{geiger_gotsch_damasco_haridasan_franco_hoffmann_2011, title={Distinct roles of savanna and forest tree species in regeneration under fire suppression in a Brazilian savanna}, volume={22}, ISSN={["1654-1103"]}, DOI={10.1111/j.1654-1103.2011.01252.x}, abstractNote={Questions: Has fire suppression relaxed barriers to the exchange of species between savanna and forest? Do all species or a subset of species participate in this exchange? Would current vegetation structure persist if fire suppression were to cease? Location: A gallery forest edge in the Cerrado region of central Brazil that burned only once in the past 35 years. Methods: Density of tree seedlings, saplings and adults, leaf area index (LAI), tree basal area and diameter were surveyed in 12, 10m � 70m transects centred on and perpendicular to the forest‐savanna boundary. Community composition was assessed using non-metric multi-dimensional scaling (NMDS). Results: Basal area and LAI declined substantially from forest to savanna, with an associated shift in species composition. Savanna tree species were nearly absent in the forest, but accounted for the majority of stems in the savanna. In contrast, forest species comprised 14% of adults and more than one-third of juveniles in the savanna. Despite the high diversity of trees (85 species) in the forest, five species play a particularly large role in this initial phase of forest expansion. Reintroduction of fire, however, would result in widespread topkill of juveniles and the majority of adult forest trees, thereby interrupting the succession towards forest. Conclusions: After 35 years during which the site burned only once, the savanna still remains dominated by savanna species. Nevertheless, the dominance of forest juveniles in border and savanna tree communities suggests that with a continued policy of fire suppression, the forest will continue to expand.}, number={2}, journal={JOURNAL OF VEGETATION SCIENCE}, author={Geiger, Erika L. and Gotsch, Sybil G. and Damasco, Gabriel and Haridasan, M. and Franco, Augusto C. and Hoffmann, William A.}, year={2011}, month={Apr}, pages={312–321} }
 @article{gotsch_geiger_franco_goldstein_meinzer_hoffmann_2010, title={Allocation to leaf area and sapwood area affects water relations of co-occurring savanna and forest trees}, volume={163}, ISSN={["1432-1939"]}, DOI={10.1007/s00442-009-1543-2}, abstractNote={Water availability is a principal factor limiting the distribution of closed-canopy forest in the seasonal tropics, suggesting that forest tree species may not be well adapted to cope with seasonal drought. We studied 11 congeneric species pairs, each containing one forest and one savanna species, to test the hypothesis that forest trees have a lower capacity to maintain seasonal homeostasis in water relations relative to savanna species. To quantify this, we measured sap flow, leaf water potential (Psi(L)), stomatal conductance (g (s)), wood density, and Huber value (sapwood area:leaf area) of the 22 study species. We found significant differences in the water relations of these two species types. Leaf area specific hydraulic conductance of the soil/root/leaf pathway (G (t)) was greater for savanna species than forest species. The lower G (t) of forest trees resulted in significantly lower Psi(L) and g (s) in the late dry season relative to savanna trees. The differences in G (t) can be explained by differences in biomass allocation of savanna and forest trees. Savanna species had higher Huber values relative to forest species, conferring greater transport capacity on a leaf area basis. Forest trees have a lower capacity to maintain homeostasis in Psi(L) due to greater allocation to leaf area relative to savanna species. Despite significant differences in water relations, relationships between traits such as wood density and minimum Psi(L) were indistinguishable for the two species groups, indicating that forest and savanna share a common axis of water-use strategies involving multiple traits.}, number={2}, journal={OECOLOGIA}, author={Gotsch, Sybil G. and Geiger, Erika L. and Franco, Augusto C. and Goldstein, Guillermo and Meinzer, Frederick C. and Hoffmann, William A.}, year={2010}, month={Jun}, pages={291–301} }
 @article{huang_geiger_van leeuwen_marsh_2009, title={Discrimination of invaded and native species sites in a semi-desert grassland using MODIS multi-temporal data}, volume={30}, ISSN={["1366-5901"]}, DOI={10.1080/01431160802395243}, abstractNote={Over the past several decades, one of the most significant changes in semi‐desert grasslands of the southwestern US has been the invasion of South African grass Eragrostis lehmanniana. The objective of this study was to characterize the phenology of systems occupied by E. lehmanniana and/or native grasses using time‐series of field observations and the Moderate Resolution Imaging Spectroradiometer Normalized Difference Vegetation Index (MODIS NDVI) and brightness (red and near‐infrared reflectance) data. Results demonstrated that it was possible to use NDVI and/or spectral reflectance data to discern the phenological differences across a gradient of E. lehmanniana infested grasslands due to variations in plant biodiversity, morphology and seasonal productivity. This work establishes the feasibility of integrating field and MODIS vegetation and spectral time‐series data to characterise landscapes dominated by different herbaceous species, which in turn provides opportunities to monitor E. lehmanniana in semi‐arid environments at a large spatial scale.}, number={4}, journal={INTERNATIONAL JOURNAL OF REMOTE SENSING}, author={Huang, C. and Geiger, E. L. and Van Leeuwen, W. J. D. and Marsh, S. E.}, year={2009}, pages={897–917} }
 @article{hoffmann_adasme_haridasan_carvalho_geiger_pereira_gotsch_franco_2009, title={Tree topkill, not mortality, governs the dynamics of savanna-forest boundaries under frequent fire in central Brazil}, volume={90}, ISSN={["1939-9170"]}, DOI={10.1890/08-0741.1}, abstractNote={Tropical savanna and forest are recognized to represent alternate stable states, primarily determined by feedbacks with fire. Vegetation–fire dynamics in each of these vegetation types are largely determined by the influence of the vegetation on fire behavior, as well as the effects of fire behavior on tree mortality, topkill (defined here as complete death of the aerial biomass, regardless of whether the plant recovers by resprouting), and rate of growth of resprouts. We studied the effect of fire on three savanna–forest boundaries in central Brazil. Fire intensity was greater in savanna than forest, as inferred by a twofold greater height of stem charring. Despite lower fire intensity, forest tree species exhibited higher rates of topkill, which was best explained by their thinner bark, relative to savanna species. Following topkill, there was no tendency for sprouts of savanna trees to grow faster than those of forest species, contrary to expectations, nor was whole‐plant mortality higher in forest than in savanna. This contrasts with observations of high rates of postburn mortality in many other tropical forests. The low tree mortality in these transitional forests suggests that the dynamic of these natural savanna–forest boundaries is fundamentally different from that of forest boundaries originating from deforestation in the humid tropics. The forests studied here appear to be much more resilient to occasional incursion of fire from the savanna, despite being unable to invade frequently burned savanna. The thin bark of forest species makes them particularly susceptible to the “fire trap,” whereby repeated topkill of small trees prevents recruitment into adult size classes. Rapid growth will be particularly important for forest species to escape the fire trap, so we predict that, where fire is frequent, forests should be restricted to high‐resource sites. Here, Mg2+ and Ca2+ concentrations had particularly strong effects on postburn growth rates, suggesting that these elements may most strongly limit the distribution of forest in these fire‐prone savannas.}, number={5}, journal={ECOLOGY}, author={Hoffmann, William A. and Adasme, Ryan and Haridasan, M. and Carvalho, Marina T. and Geiger, Erika L. and Pereira, Mireia A. B. and Gotsch, Sybil G. and Franco, Augusto C.}, year={2009}, month={May}, pages={1326–1337} }
 @article{huang_geiger_2008, title={Climate anomalies provide opportunities for large-scale mapping of non-native plant abundance in desert grasslands}, volume={14}, number={5}, journal={Diversity & Distributions}, author={Huang, C. Y. and Geiger, E. L.}, year={2008}, pages={875–884} }