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| Author | Orivel, J.; Klimes, P.; Novotny, V.; Leponce, M. | ||||
| Title | Resource use and food preferences in understory ant communities along a complete elevational gradient in Papua New Guinea | Type | Journal Article | ||
| Year | 2018 | Publication | Biotropica | Abbreviated Journal | Biotropica |
| Volume | 50 | Issue | 4 | Pages | 641-648 |
| Keywords | altitudinal gradient; food resources; Formicidae; Mt Wilhelm; nutritional ecology | ||||
| Abstract | Elevational gradients provide an interesting opportunity for studying the effect of climatic drivers over short distances on the various facets of biodiversity. It is globally assumed that the decrease in species richness with increasing elevation follows mainly the decrease in ecosystem productivity, but studies on functional diversity still remain limited. Here, we investigated how resource use and food preferences by both individual ant species and communities foraging in the understory vary with elevation along a complete elevational gradient (200 to 3200 m asl). Five bait types reflecting some of the main ecosystem processes in which ants are involved were tested: mutualism (sucrose and melezitose), predation (live termites), and detritivory (crushed insects and chicken feces). The observed monotonic decrease in both species richness and occurrences with elevation increase was accompanied by changes in some of the tested ecosystem processes. Such variations can be explained by resource availability and/or resource limitation: Predation and bird feces removal decreased with increasing elevation possibly reflecting a decline in species able to use these resources, while insect detritivory and nectarivory were most probably driven by resource limitation (or absence of limitation), as their relative use did not change along the gradient. Consequently, resource attractiveness (i.e., food preferences at the species level) appears as an important factor in driving community structuring in ants together with the abiotic environmental conditions. | ||||
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| Publisher | John Wiley & Sons, Ltd (10.1111) | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0006-3606 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
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doi: 10.1111/btp.12539 | Approved | no | ||
| Call Number | EcoFoG @ webmaster @ | Serial | 893 | ||
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| Author | Servigne, P.; Orivel, J.; Azémar, F.; Carpenter, J.; Dejean, A.; Corbara, B. | ||||
| Title | An uneasy alliance: a nesting association between aggressive ants and equally fierce social wasps | Type | Journal Article | ||
| Year | 2020 | Publication | Insect Science | Abbreviated Journal | Insect Science |
| Volume | 27 | Issue | 1 | Pages | 122-132 |
| Keywords | Azteca chartifex ants; interspecific association; mutualism; Polybia rejecta wasps; scent trail erasure | ||||
| Abstract | Although the Neotropical territorially dominant arboreal ant Azteca chartifex Forel is very aggressive towards any intruder, its populous colonies tolerate the close presence of the fierce polistine wasp Polybia rejecta (F.).
In French Guiana, 83.33% of the 48 P. rejecta nests recorded were found side by side with those of A. chartifex. This nesting association results in mutual protection from predators (i.e., the wasps protected from army ants; the ants protected from birds). We conducted field studies, laboratory-based behavioral experiments and chemical analyses to elucidate the mechanisms allowing the persistence of this association. Due to differences in the cuticular profiles of the two species, we eliminated the possibility of chemical mimicry. Also, analyses of the carton nests did not reveal traces of marking on the envelopes. Because ant forager flows were not perturbed by extracts from the wasps' Dufour's and venom glands, we rejected any hypothetical action of repulsive chemicals. Nevertheless, we noted that the wasps 'scraped' the surface of the upper part of their nest envelope using their mandibles, likely removing the ants' scent trails, and an experiment showed that ant foragers were perturbed by the removal of their scent trails. This leads us to use the term 'erasure hypothesis'. Thus, this nesting association persists thanks to a relative tolerance by the ants towards wasp presence and the behavior of the wasps that allows them to 'contain' their associated ants through the elimination of their scent trails, direct attacks, 'wing-buzzing' behavior and ejecting the ants. |
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| Publisher | John Wiley & Sons, Ltd (10.1111) | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1672-9609 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes |
doi: 10.1111/1744-7917.12597 | Approved | no | ||
| Call Number | EcoFoG @ webmaster @ | Serial | 885 | ||
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| Author | Dlouhá, J.; Alméras, T.; Beauchene, J.; Clair, B.; Fournier, M. | ||||
| Title | Biophysical dependences among functional wood traits | Type | Journal Article | ||
| Year | 2018 | Publication | Functional Ecology | Abbreviated Journal | Funct Ecol |
| Volume | 32 | Issue | 12 | Pages | 2652-2665 |
| Keywords | basic density; biomechanical traits; hydraulic traits; wood traits | ||||
| Abstract | Abstract Wood properties and especially wood density have been used as functional traits organized along major axes of species life history and strategy. Beyond statistical analyses, a better mechanistic understanding of relationships among wood traits is essential for ecologically relevant interpretation of wood trait variations. A set of theoretical relationships mechanistically linking wood basic density with some other wood traits is derived from cellular material physics. These theoretical models picture basic physical constraints and thus provide null hypotheses for further ecological studies. Analysis is applied to data from two original datasets and several datasets extracted from the literature. Results emphasize the strong physical constraint behind the link between basic density and maximal storable water on the one hand, and elastic modulus on the other hand. Beyond these basic physical constraints, the developed framework reveals physically less expected trends: the amount of free water available for physiological needs increases in less dense wood of fast-growing species, and the cell wall stiffness decreases with density in temperate hardwoods and is higher in sapling stages in the rainforest understorey where competition for light is associated with high mechanical risk. We emphasize the use of theoretically independent traits derived from models of cellular material physics to investigate the functional variation of wood traits together with their environmental and phylogenetic variations. Although the current study is limited to basic density, green wood lumen saturation and wood specific modulus, we further emphasize the identification of complementary independent wood traits representing other biomechanical functions, nutrient storage, hydraulic conductance and resistance to drought. A plain language summary is available for this article. | ||||
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| Publisher | John Wiley & Sons, Ltd (10.1111) | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0269-8463 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes |
doi: 10.1111/1365-2435.13209 | Approved | no | ||
| Call Number | EcoFoG @ webmaster @ | Serial | 851 | ||
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| Author | González, A.L.; Céréghino, R.; Dézerald, O.; Farjalla, V.F.; Leroy, C.; Richardson, B.A.; Richardson, M.J.; Romero, G.Q.; Srivastava, D.S. | ||||
| Title | Ecological mechanisms and phylogeny shape invertebrate stoichiometry: A test using detritus-based communities across Central and South America | Type | Journal Article | ||
| Year | 2018 | Publication | Functional Ecology | Abbreviated Journal | Funct Ecol |
| Volume | 32 | Issue | 10 | Pages | 2448-2463 |
| Keywords | body size scaling; carnivores; detritivores; ecological stoichiometry; macroinvertebrates; nitrogen; phosphorous; phylogenetic signal | ||||
| Abstract | Stoichiometric differences among organisms can affect trophic interactions and rates of nutrient cycling within ecosystems. However, we still know little about either the underlying causes of these stoichiometric differences or the consistency of these differences across large geographical extents. Here, we analyse elemental (carbon, nitrogen, phosphorus) composition of 872 aquatic macroinvertebrates (71 species) inhabiting tank bromeliads (n = 140) from five distantly located sites across Central and South America to (i) test phylogenetic, trophic and body size scaling explanations for why organisms differ in elemental composition and (ii) determine whether patterns in elemental composition are universal or context dependent. Taxonomy explained most variance in elemental composition, even though phylogenetic signals were weak and limited to regional spatial extents and to the family level. The highest elemental contents and lowest carbon:nutrient ratios were found in organisms at high trophic levels and with smaller body size, regardless of geographical location. Carnivores may have higher nutrient content and lower carbon:nutrient ratios than their prey, as organisms optimize growth by choosing the most nutrient-rich resources to consume and then preferentially retain nutrients over carbon in their bodies. Smaller organisms grow proportionally faster than large organisms and so are predicted to have higher nutrient requirements to fuel RNA and protein synthesis. Geography influenced the magnitude, more than the direction, of the ecological and/or phylogenetic effects on elemental composition. Overall, our results show that both ecological (i.e. trophic group) and evolutionary drivers explain among-taxa variation in the elemental content of invertebrates, whereas intraspecific variation is mainly a function of body size. Our findings also demonstrate that restricting analyses of macroinvertebrate stoichiometry solely to either the local scale or species level affects inferences of the patterns in invertebrate elemental content and their underlying mechanisms. | ||||
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| Publisher | John Wiley & Sons, Ltd (10.1111) | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0269-8463 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes |
doi: 10.1111/1365-2435.13197 | Approved | no | ||
| Call Number | EcoFoG @ webmaster @ | Serial | 849 | ||
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| Author | Maréchaux, I.; Bonal, D.; Bartlett, M.K.; Burban, B.; Coste, S.; Courtois, E.A.; Dulormne, M.; Goret, J.-Y.; Mira, E.; Mirabel, A.; Sack, L.; Stahl, C.; Chave, J. | ||||
| Title | Dry-season decline in tree sapflux is correlated with leaf turgor loss point in a tropical rainforest | Type | Journal Article | ||
| Year | 2018 | Publication | Functional Ecology | Abbreviated Journal | Funct Ecol |
| Volume | 32 | Issue | 10 | Pages | 2285-2297 |
| Keywords | drought tolerance; hydraulic conductance; sap flow; sapflux density; tropical trees; turgor loss point; water potential; wilting point | ||||
| Abstract | Water availability is a key determinant of forest ecosystem function and tree species distributions. While droughts are increasing in frequency in many ecosystems, including in the tropics, plant responses to water supply vary with species and drought intensity and are therefore difficult to model. Based on physiological first principles, we hypothesized that trees with a lower turgor loss point (pi-tlp), that is, a more negative leaf water potential at wilting, would maintain water transport for longer into a dry season. We measured sapflux density of 22 mature trees of 10 species during a dry season in an Amazonian rainforest, quantified sapflux decline as soil water content decreased and tested its relationship to tree pi-tlp, size and leaf predawn and midday water potentials measured after the onset of the dry season. The measured trees varied strongly in the response of water use to the seasonal drought, with sapflux at the end of the dry season ranging from 37 to 117% (on average 83 +/- 5 %) of that at the beginning of the dry season. The decline of water transport as soil dried was correlated with tree pi-tlp (Spearman's rho > 0.63), but not with tree size or predawn and midday water potentials. Thus, trees with more drought-tolerant leaves better maintained water transport during the seasonal drought. Our study provides an explicit correlation between a trait, measurable at the leaf level, and whole-plant performance under drying conditions. Physiological traits such as pi-tlp can be used to assess and model higher scale processes in response to drying conditions. | ||||
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| Publisher | Wiley/Blackwell (10.1111) | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0269-8463 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes |
doi: 10.1111/1365-2435.13188 | Approved | no | ||
| Call Number | EcoFoG @ webmaster @ | Serial | 830 | ||
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| Author | Robillard, T.; ter Hofstede, H.M.; Orivel, J.; Vicente, N.M. | ||||
| Title | Bioacoustics of the Neotropical Eneopterinae (Orthoptera, Grylloidea, Gryllidae) | Type | Journal Article | ||
| Year | 2015 | Publication | Bioacoustics | Abbreviated Journal | Bioacoustics |
| Volume | 24 | Issue | 2 | Pages | 123-143 |
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| Abstract | In members of the cricket subfamily Eneopterinae (Orthoptera, Grylloidea), songs with powerful high-frequency (HF) harmonics have evolved, which likely represents a distinctive acoustic adaptation. In this study, we analysed or reanalysed the songs of the three eneopterine genera present in the Neotropics to evaluate whether they also possess high-amplitude HF components. We present new data and combine several lines of evidence to interpret or reinterpret the calling signals of a representative species for each genus. We used new recordings in order to detect and analyse potential HF components of the songs. Stridulatory files were measured, and stridulation was studied using high-speed video recordings. The results suggest that all eneopterine genera from the Neotropics use HFs to communicate, based on the rich harmonic content of their songs. Strikingly, the Neotropical eneopterines possess high dominant frequencies, recalling the patterns observed in the tribe Lebinthini, the most speciose tribe of the subfamily distributed in the Western Pacific region and in Southeast Asia: Ligypterus and Ponca show dominant harmonic peaks, whereas Eneoptera possesses unique features. The three species under study, however, deal differently with HFs. | ||||
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| Publisher | Taylor & Francis | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0952-4622 | ISBN | Medium | ||
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| Notes |
doi: 10.1080/09524622.2014.996915 | Approved | no | ||
| Call Number | EcoFoG @ webmaster @ | Serial | 651 | ||
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| Author | Perrot, T.; Schwartz, M.; Saiag, F.; Salzet, G.; Dumarçay, S.; Favier, F.; Gérardin, P.; Girardet, J.-M.; Sormani, R.; Morel-Rouhier, M.; Amusant, N.; Didierjean, C.; Gelhaye, E. | ||||
| Title | Fungal Glutathione Transferases as Tools to Explore the Chemical Diversity of Amazonian Wood Extractives | Type | Journal Article | ||
| Year | 2018 | Publication | ACS Sustainable Chem. Eng. | Abbreviated Journal | ACS Sustainable Chemistry & Engineering |
| Volume | 6 | Issue | 10 | Pages | 13078-13085 |
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| Abstract | The natural durability of wood is linked to its chemical composition and in particular the presence of metabolites called extractives that often possess chemical reactivity. For dealing with these compounds, wood degraders have developed detoxification systems usually involving enzyme families. Among these enzymes, glutathione transferases (GSTs) are involved in the decrease of the reactivity of toxic compounds. In this study, the hypothesis that the detoxification systems of wood decaying fungi could be indicators of the chemical reactivity of wood extracts has been tested. This approach has been evaluated using 32 wood extracts coming from French Guiana species, testing their antimicrobial ability, antioxidative properties, and reactivity against six GSTs from the white rot Trametes versicolor. From the obtained data, a significant correlation between the antimicrobial and antioxidative properties of the tested wood extracts and GST interactions was established. In addition, the chemical analysis performed on one of the most reactive extracts (an acetonic extract of Bagassa guianensis) has demonstrated oxyresveratrol as a major constituent. We were able to cocrystallize one GST with this commercially interesting compound. Taken together, the presented data support the hypothesis that detoxifying enzymes could be used to identify the presence of molecules of industrial interest in wood extracts. | ||||
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| Publisher | American Chemical Society | Place of Publication | Editor | ||
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doi: 10.1021/acssuschemeng.8b02636 | Approved | no | ||
| Call Number | EcoFoG @ webmaster @ | Serial | 854 | ||
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| Author | Fu, T.; Touboul, D.; Della-Negra, S.; Houel, E.; Amusant, N.; Duplais, C.; Fisher, G.L.; Brunelle, A. | ||||
| Title | Tandem Mass Spectrometry Imaging and in Situ Characterization of Bioactive Wood Metabolites in Amazonian Tree Species Sextonia rubra | Type | Journal Article | ||
| Year | 2018 | Publication | Analytical Chemistry | Abbreviated Journal | Anal. Chem. |
| Volume | 90 | Issue | 12 | Pages | 7535-7543 |
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| Abstract | Driven by a necessity for confident molecular identification at high spatial resolution, a new time-of-flight secondary ion mass spectrometry (TOF-SIMS) tandem mass spectrometry (tandem MS) imaging instrument has been recently developed. In this paper, the superior MS/MS spectrometry and imaging capability of this new tool is shown for natural product study. For the first time, via in situ analysis of the bioactive metabolites rubrynolide and rubrenolide in Amazonian tree species Sextonia rubra (Lauraceae), we were able both to analyze and to image by tandem MS the molecular products of natural biosynthesis. Despite the low abundance of the metabolites in the wood sample(s), efficient MS/MS analysis of these γ-lactone compounds was achieved, providing high confidence in the identification and localization. In addition, tandem MS imaging minimized the mass interferences and revealed specific localization of these metabolites primarily in the ray parenchyma cells but also in certain oil cells and, further, revealed the presence of previously unidentified γ-lactone, paving the way for future studies in biosynthesis. | ||||
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| Publisher | American Chemical Society | Place of Publication | Editor | ||
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| ISSN | 0003-2700 | ISBN | Medium | ||
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| Notes |
doi: 10.1021/acs.analchem.8b01157 | Approved | no | ||
| Call Number | EcoFoG @ webmaster @ | Serial | 834 | ||
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| Author | Bompy, F.; Lequeue, G.; Imbert, D.; Dulormne, M. | ||||
| Title | Increasing fluctuations of soil salinity affect seedling growth performances and physiology in three Neotropical mangrove species | Type | Journal Article | ||
| Year | 2014 | Publication | Plant and Soil | Abbreviated Journal | Plant and Soil |
| Volume | 380 | Issue | 1 | Pages | 399-413 |
| Keywords | Acclimation; Avicennia germinans; Hypersalinity; Laguncularia racemosa; Leaf gas exchange; Rhizophora mangle; Salt stress | ||||
| Abstract | Background: Micro-tidal wetlands are subject to strong seasonal variations of soil salinity that are likely to increase in amplitude according to climate model predictions for the Caribbean. Whereas the effects of constant salinity levels on the physiology of mangrove species have been widely tested, little is known about acclimation to fluctuations in salinity. Aims and methods: The aim of this experiment was to characterize the consequences of the rate of increase in salinity (slow versus fast) and salinity fluctuations over time versus constant salt level. Seedling mortality, growth, and leaf gas exchange of three mangrove species, Avicennia germinans, Laguncularia racemosa, and Rhizophora mangle were investigated in semicontrolled conditions at different salt levels (0, 685, 1025, and 1370 mM NaCl). Results: Slow salinity increase up to 685 mM induced acclimation, improving the salt tolerance of A. germinans and L. racemosa, but had no effect on R. mangle. During fluctuations between 0 and 685 mM, A. germinans and R. mangle were not affected by a salinity drop to zero, whereas L. racemosa took advantage of the brief freshwater episode as shown by the durable improvement of photosynthesis and biomass production. Conclusions: This study provides new insights into physiological resistance and acclimation to salt stress. We show that seasonal variations of salinity may affect mangrove seedlings' morphology and physiology as much as annual mean salinity. Moreover, more severe dry seasons due to climate change may impact tree stature and species composition in mangroves through higher mortality rates and physiological disturbance at the seedling stage. © 2014 Springer International Publishing Switzerland. | ||||
| Address | EA 926 DYNECAR, UFR des Sciences Exactes et Naturelles, Université des Antilles et de la Guyane, BP 592, 97 159 Pointe-à-Pitre cedex, Guadeloupe (F.W.I.), France | ||||
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Cited By :7; Export Date: 7 February 2017 | Approved | no | ||
| Call Number | EcoFoG @ webmaster @ | Serial | 726 | ||
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| Author | Santiago, L.S.; De Guzman, M.E.; Baraloto, C.; Vogenberg, J.E.; Brodie, M.; Hérault, B.; Fortunel, C.; Bonal, D. | ||||
| Title | Coordination and trade-offs among hydraulic safety, efficiency and drought avoidance traits in Amazonian rainforest canopy tree species | Type | Journal Article | ||
| Year | 2018 | Publication | New Phytologist | Abbreviated Journal | New Phytol. |
| Volume | 218 | Issue | 3 | Pages | 1015-1024 |
| Keywords | Amazonian forest; cavitation; drought; hydraulic conductivity; sapwood capacitance; turgor loss point; wood density; xylem; cavitation; climate change; drought; forest canopy; forest ecosystem; hydraulic conductivity; rainforest; species diversity; tree; tropical forest; vulnerability; wood; Amazonia; French Guiana; Paracou | ||||
| Abstract | Predicting responses of tropical forests to climate change-type drought is challenging because of high species diversity. Detailed characterization of tropical tree hydraulic physiology is necessary to evaluate community drought vulnerability and improve model parameterization. Here, we measured xylem hydraulic conductivity (hydraulic efficiency), xylem vulnerability curves (hydraulic safety), sapwood pressure–volume curves (drought avoidance) and wood density on emergent branches of 14 common species of Eastern Amazonian canopy trees in Paracou, French Guiana across species with the densest and lightest wood in the plot. Our objectives were to evaluate relationships among hydraulic traits to identify strategies and test the ability of easy-to-measure traits as proxies for hard-to-measure hydraulic traits. Xylem efficiency was related to capacitance, sapwood water content and turgor loss point, and other drought avoidance traits, but not to xylem safety (P50). Wood density was correlated (r = −0.57 to −0.97) with sapwood pressure–volume traits, forming an axis of hydraulic strategy variation. In contrast to drier sites where hydraulic safety plays a greater role, tropical trees in this humid tropical site varied along an axis with low wood density, high xylem efficiency and high capacitance at one end of the spectrum, and high wood density and low turgor loss point at the other. | ||||
| Address | INRA, UMR Silva, AgroParisTech, Université de Lorraine, Nancy, 54000, France | ||||
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| Publisher | Blackwell Publishing Ltd | Place of Publication | Editor | ||
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| ISSN | 0028646x (Issn) | ISBN | Medium | ||
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| Notes |
Cited By :6; Export Date: 3 December 2018; Coden: Nepha; Correspondence Address: Santiago, L.S.; Department of Botany & Plant Sciences, University of California, 2150 Batchelor Hall, United States; email: santiago@ucr.edu; Funding details: Centre de Coopération Internationale en Recherche Agronomique pour le Développement, CIRAD, FEDER 2014–2020; Funding details: Centre de Coopération Internationale en Recherche Agronomique pour le Développement, CIRAD, Project; Funding details: Centre de Coopération Internationale en Recherche Agronomique pour le Développement, CIRAD, GY0006894; Funding details: University of California, UC; Funding details: National Institute of Food and Agriculture, NIFA; Funding details: ANR-10-LABX-0025; Funding text 1: We would like to thank Benôıt Burban and Jean-Yves Goret for laboratory support, Jocelyn Cazal and Valentine Alt for skillfully climbing trees for samples, Aurelie Dourdain for database support, and Clement Stahl, John Sperry, Sean Gleason, Todd Dawson, Steve Davis, JoséLuiz Silva, Aleyda Acosta Rangel and three anonymous reviewers for comments and discussions on the data presented. The study has been supported by the TRY initiative on plant traits (http://www.try-db.org). The TRY initiative and database is hosted, developed and maintained by J. Kattge and G. Boenisch (Max Planck Institute for Biogeochemistry, Jena, Germany). TRY is currently supported by Future Earth/ bioDISCOVERY and the German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig. We also acknowledge the University of California, Botany and Plant Sciences Department and the USDA National Institute of Food and Agriculture for support. We are grateful to the CIRAD and the GFclim project (FEDER 2014–2020, Project GY0006894) for financial support of the Paracou research station. Funding for fieldwork and data acquisition was provided by Investissement d’Avenir grants of the French ANR (CEBA: ANR-10-LABX-0025), through the ‘DRAMA’ and ‘HydroSTAT’ projects.; References: Allen, C.D., Macalady, A.K., Chenchouni, H., Bachelet, D., McDowell, N., Vennetier, M., Kitzberger, T., Hogg, E.H., A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests (2010) Forest Ecology and Management, 259, pp. 660-684; Anderegg, W.R.L., Berry, J.A., Smith, D.D., Sperry, J.S., Anderegg, L.D.L., Field, C.B., The roles of hydraulic and carbon stress in a widespread climate-induced forest die-off (2012) Proceedings of the National Academy of Sciences, USA, 109, pp. 233-237; Anderegg, W.R.L., Klein, T., Bartlett, M., Sack, L., Pellegrini, A.F.A., Choat, B., Jansen, S., Meta-analysis reveals that hydraulic traits explain cross-species patterns of drought-induced tree mortality across the globe (2016) Proceedings of the National Academy of Sciences, USA, 113, pp. 5024-5029; 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