Home | [1–10] << 11 12 13 14 15 16 17 18 19 20 >> [21–30] |
Records | |||||
---|---|---|---|---|---|
Author | Bossu, J.; Lehnebach, R.; Corn, S.; Regazzi, A.; Beauchene, J.; Clair, B. | ||||
Title | Interlocked grain and density patterns in Bagassa guianensis: changes with ontogeny and mechanical consequences for trees | Type | Journal Article | ||
Year | 2018 | Publication | Trees | Abbreviated Journal | |
Volume | 32 | Issue | 6 | Pages | 1643-1655 |
Keywords | |||||
Abstract | Interlocked grain and basic density increase from pith to bark in Bagassa guianensis and greatly improve trunk torsional stiffness and wood tenacity in the radial plane. | ||||
Address | |||||
Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1432-2285 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | EcoFoG @ webmaster @ Bossu2018 | Serial | 852 | ||
Permanent link to this record | |||||
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. | ||||
Address | |||||
Corporate Author | Thesis | ||||
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: 10.1111/1365-2435.13209 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 851 | ||
Permanent link to this record | |||||
Author | Rodríguez Pérez, H.; Borrel, G.; Leroy, C.; Carrias, J.-F.; Corbara, B.; Srivastava, D.S.; Céréghino, R. | ||||
Title | Simulated drought regimes reveal community resilience and hydrological thresholds for altered decomposition | Type | Journal Article | ||
Year | 2018 | Publication | Oecologia | Abbreviated Journal | |
Volume | 187 | Issue | 1 | Pages | 267-279 |
Keywords | |||||
Abstract | Future climate scenarios forecast a 10–50% decline in rainfall in Eastern Amazonia. Altered precipitation patterns may change important ecosystem functions like decomposition through either changes in physical and chemical processes or shifts in the activity and/or composition of species. We experimentally manipulated hydroperiods (length of wet:dry cycles) in a tank bromeliad ecosystem to examine impacts on leaf litter decomposition. Gross loss of litter mass over 112 days was greatest in continuously submersed litter, lowest in continuously dry litter, and intermediate over a range of hydroperiods ranging from eight cycles of 7 wet:7 dry days to one cycle of 56 wet:56 dry days. The resilience of litter mass loss to hydroperiod length is due to a shift from biologically assisted decomposition (mostly microbial) at short wet:dry hydroperiods to physicochemical release of dissolved organic matter at longer wet:dry hydroperiods. Biologically assisted decomposition was maximized at wet:dry hydroperiods falling within the range of ambient conditions (12–22 consecutive dry days) but then declined under prolonged wet:dry hydroperiods (28 and 56 dry days. Fungal:bacterial ratios showed a similar pattern as biologically assisted decomposition to hydroperiod length. Our results suggest that microbial communities confer functional resilience to altered hydroperiod in tank bromeliad ecosystems. We predict a substantial decrease in biological activity relevant to decomposition under climate scenarios that increase consecutive dry days by 1.6- to 3.2-fold in our study area, whereas decreased frequency of dry periods will tend to increase the physicochemical component of decomposition. | ||||
Address | |||||
Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1432-1939 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | EcoFoG @ webmaster @ Rodríguez Pérez2018 | Serial | 850 | ||
Permanent link to this record | |||||
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. | ||||
Address | |||||
Corporate Author | Thesis | ||||
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 | ||
Permanent link to this record | |||||
Author | De Deurwaerder, H.; Hervé-Fernández, P.; Stahl, C.; Burban, B.; Petronelli, P.; Hoffman, B.; Bonal, D.; Boeckx, P.; Verbeeck, H. | ||||
Title | Liana and tree below-ground water competition – evidence for water resource partitioning during the dry season | Type | Journal Article | ||
Year | 2018 | Publication | Tree Physiology | Abbreviated Journal | |
Volume | 38 | Issue | 7 | Pages | 1071-1083 |
Keywords | |||||
Abstract | To date, reasons for the increase in liana abundance and biomass in the Neotropics are still unclear. One proposed hypothesis suggests that lianas, in comparison with trees, are more adaptable to drought conditions. Moreover, previous studies have assumed that lianas have a deeper root system, which provides access to deeper soil layers, thereby making them less susceptible to drought stress. The dual stable water isotope approach (δ18O and δ2H) enables below-ground vegetation competition for water to be studied. Based on the occurrence of a natural gradient in soil water isotopic signatures, with enriched signatures in shallow soil relative to deep soil, the origin of vegetation water sources can be derived. Our study was performed on canopy trees and lianas reaching canopy level in tropical forests of French Guiana. Our results show liana xylem water isotopic signatures to be enriched in heavy isotopes in comparison with those from trees, indicating differences in water source depths and a more superficial root activity for lianas during the dry season. This enables them to efficiently capture dry season precipitation. Our study does not support the liana deep root water extraction hypothesis. Additionally, we provide new insights into water competition between tropical canopy lianas and trees. Results suggest that this competition is mitigated during the dry season due to water resource partitioning. | ||||
Address | |||||
Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0829-318x | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | 10.1093/treephys/tpy002 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 848 | ||
Permanent link to this record | |||||
Author | Courtois, E.A.; Stahl, C.; Van den Berge, J.; Bréchet, L.; Van Langenhove, L.; Richter, A.; Urbina, I.; Soong, J.L.; Peñuelas, J.; Janssens, I.A. | ||||
Title | Spatial Variation of Soil CO2, CH4 and N2O Fluxes Across Topographical Positions in Tropical Forests of the Guiana Shield | Type | Journal Article | ||
Year | 2018 | Publication | Ecosystems | Abbreviated Journal | |
Volume | 21 | Issue | 7 | Pages | 1445-1458 |
Keywords | |||||
Abstract | The spatial variation of soil greenhouse gas fluxes (GHG; carbon dioxide—CO2, methane—CH4 and nitrous oxide—N2O) remains poorly understood in highly complex ecosystems such as tropical forests. We used 240 individual flux measurements of these three GHGs from different soil types, at three topographical positions and in two extreme hydric conditions in the tropical forests of the Guiana Shield (French Guiana, South America) to (1) test the effect of topographical positions on GHG fluxes and (2) identify the soil characteristics driving flux variation in these nutrient-poor tropical soils. Surprisingly, none of the three GHG flux rates differed with topographical position. CO2 effluxes covaried with soil pH, soil water content (SWC), available nitrogen and total phosphorus. The CH4 fluxes were best explained by variation in SWC, with soils acting as a sink under drier conditions and as a source under wetter conditions. Unexpectedly, our study areas were generally sinks for N2O and N2O fluxes were partly explained by total phosphorus and available nitrogen concentrations. This first study describing the spatial variation of soil fluxes of the three main GHGs measured simultaneously in forests of the Guiana Shield lays the foundation for specific studies of the processes underlying the observed patterns. | ||||
Address | |||||
Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 1435-0629 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | EcoFoG @ webmaster @ Courtois2018 | Serial | 847 | ||
Permanent link to this record | |||||
Author | Franklin, J.; Andrade, R.; Daniels, M.L.; Fairbairn, P.; Fandino, M.C.; Gillespie, T.W.; González, G.; Gonzalez, O.; Imbert, D.; Kapos, V.; Kelly, D.L.; Marcano-Vega, H.; Meléndez-Ackerman, E.J.; McLaren, K.P.; McDonald, M.A.; Ripplinger, J.; Rojas-Sandoval, J.; Ross, M.S.; Ruiz, J.; Steadman, D.W.; Tanner, E.V.J.; Terrill, I.; Vennetier, M. | ||||
Title | Geographical ecology of dry forest tree communities in the West Indies | Type | Journal Article | ||
Year | 2018 | Publication | Journal of Biogeography | Abbreviated Journal | J Biogeogr |
Volume | 45 | Issue | 5 | Pages | 1168-1181 |
Keywords | beta diversity; Caribbean; community composition; seasonally dry tropical forest; species turnover; tropical dry forest; West Indies | ||||
Abstract | Abstract Aim Seasonally dry tropical forest (SDTF) of the Caribbean Islands (primarily West Indies) is floristically distinct from Neotropical SDTF in Central and South America. We evaluate whether tree species composition was associated with climatic gradients or geographical distance. Turnover (dissimilarity) in species composition of different islands or among more distant sites would suggest communities structured by speciation and dispersal limitations. A nested pattern would be consistent with a steep resource gradient. Correlation of species composition with climatic variation would suggest communities structured by broad-scale environmental filtering. Location The West Indies (The Bahamas, Cuba, Hispaniola, Jamaica, Puerto Rico, US Virgin Islands, Guadeloupe, Martinique, St. Lucia), Providencia (Colombia), south Florida (USA) and Florida Keys (USA). Taxon Seed plants?woody taxa (primarily trees). Methods We compiled 572 plots from 23 surveys conducted between 1969 and 2016. Hierarchical clustering of species in plots, and indicator species analysis for the resulting groups of sites, identified geographical patterns of turnover in species composition. Nonparametric analysis of variance, applied to principal components of bioclimatic variables, determined the degree of covariation in climate with location. Nestedness versus turnover in species composition was evaluated using beta diversity partitioning. Generalized dissimilarity modelling partitioned the effect of climate versus geographical distance on species composition. Results Despite a set of commonly occurring species, SDTF tree community composition was distinct among islands and was characterized by spatial turnover on climatic gradients that covaried with geographical gradients. Greater Antillean islands were characterized by endemic indicator species. Northern subtropical areas supported distinct, rather than nested, SDTF communities in spite of low levels of endemism. Main conclusions The SDTF species composition was correlated with climatic variation. SDTF on large Greater Antillean islands (Hispaniola, Jamaica and Cuba) was characterized by endemic species, consistent with their geological history and the biogeography of plant lineages. These results suggest that both environmental filtering and speciation shape Caribbean SDTF tree communities. | ||||
Address | |||||
Corporate Author | Thesis | ||||
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 | 0305-0270 | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | doi: 10.1111/jbi.13198 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 846 | ||
Permanent link to this record | |||||
Author | Bastin, J.-F.; Rutishauser, E.; Kellner, J.R.; Saatchi, S.; Pélissier, R.; Hérault, B.; Slik, F.; Bogaert, J.; De Cannière, C.; Marshall, A.R.; Poulsen, J.; Alvarez-Loyayza, P.; Andrade, A.; Angbonga-Basia, A.; Araujo-Murakami, A.; Arroyo, L.; Ayyappan, N.; de Azevedo, C.P.; Banki, O.; Barbier, N.; Barroso, J.G.; Beeckman, H.; Bitariho, R.; Boeckx, P.; Boehning-Gaese, K.; Brandão, H.; Brearley, F.Q.; Breuer Ndoundou Hockemba, M.; Brienen, R.; Camargo, J.L.C.; Campos-Arceiz, A.; Cassart, B.; Chave, J.; Chazdon, R.; Chuyong, G.; Clark, D.B.; Clark, C.J.; Condit, R.; Honorio Coronado, E.N.; Davidar, P.; de Haulleville, T.; Descroix, L.; Doucet, J.-L.; Dourdain, A.; Droissart, V.; Duncan, T.; Silva Espejo, J.; Espinosa, S.; Farwig, N.; Fayolle, A.; Feldpausch, T.R.; Ferraz, A.; Fletcher, C.; Gajapersad, K.; Gillet, J.-F.; Amaral, I.L. do; Gonmadje, C.; Grogan, J.; Harris, D.; Herzog, S.K.; Homeier, J.; Hubau, W.; Hubbell, S.P.; Hufkens, K.; Hurtado, J.; Kamdem, N.G.; Kearsley, E.; Kenfack, D.; Kessler, M.; Labrière, N.; Laumonier, Y.; Laurance, S.; Laurance, W.F.; Lewis, S.L.; Libalah, M.B.; Ligot, G.; Lloyd, J.; Lovejoy, T.E.; Malhi, Y.; Marimon, B.S.; Marimon Junior, B.H.; Martin, E.H.; Matius, P.; Meyer, V.; Mendoza Bautista, C.; Monteagudo-Mendoza, A.; Mtui, A.; Neill, D.; Parada Gutierrez, G.A.; Pardo, G.; Parren, M.; Parthasarathy, N.; Phillips, O.L.; Pitman, N.C.A.; Ploton, P.; Ponette, Q.; Ramesh, B.R.; Razafimahaimodison, J.-C.; Réjou-Méchain, M.; Rolim, S.G.; Saltos, H.R.; Rossi, L.M.B.; Spironello, W.R.; Rovero, F.; Saner, P.; Sasaki, D.; Schulze, M.; Silveira, M.; Singh, J.; Sist, P.; Sonke, B.; Soto, J.D.; de Souza, C.R.; Stropp, J.; Sullivan, M.J.P.; Swanepoel, B.; Steege, H. ter; Terborgh, J.; Texier, N.; Toma, T.; Valencia, R.; Valenzuela, L.; Ferreira, L.V.; Valverde, F.C.; Van Andel, T.R.; Vasque, R.; Verbeeck, H.; Vivek, P.; Vleminckx, J.; Vos, V.A.; Wagner, F.H.; Warsudi, P.P.; Wortel, V.; Zagt, R.J.; Zebaze, D. | ||||
Title | Pan-tropical prediction of forest structure from the largest trees | Type | Journal Article | ||
Year | 2018 | Publication | Global Ecology and Biogeography | Abbreviated Journal | Global Ecol Biogeogr |
Volume | 27 | Issue | 11 | Pages | 1366-1383 |
Keywords | carbon; climate change; forest structure; large trees; pan-tropical; Redd+; tropical forest ecology | ||||
Abstract | Abstract Aim Large tropical trees form the interface between ground and airborne observations, offering a unique opportunity to capture forest properties remotely and to investigate their variations on broad scales. However, despite rapid development of metrics to characterize the forest canopy from remotely sensed data, a gap remains between aerial and field inventories. To close this gap, we propose a new pan-tropical model to predict plot-level forest structure properties and biomass from only the largest trees. Location Pan-tropical. Time period Early 21st century. Major taxa studied Woody plants. Methods Using a dataset of 867 plots distributed among 118 sites across the tropics, we tested the prediction of the quadratic mean diameter, basal area, Lorey's height, community wood density and aboveground biomass (AGB) from the ith largest trees. Results Measuring the largest trees in tropical forests enables unbiased predictions of plot- and site-level forest structure. The 20 largest trees per hectare predicted quadratic mean diameter, basal area, Lorey's height, community wood density and AGB with 12, 16, 4, 4 and 17.7% of relative error, respectively. Most of the remaining error in biomass prediction is driven by differences in the proportion of total biomass held in medium-sized trees (50?70 cm diameter at breast height), which shows some continental dependency, with American tropical forests presenting the highest proportion of total biomass in these intermediate-diameter classes relative to other continents. Main conclusions Our approach provides new information on tropical forest structure and can be used to generate accurate field estimates of tropical forest carbon stocks to support the calibration and validation of current and forthcoming space missions. It will reduce the cost of field inventories and contribute to scientific understanding of tropical forest ecosystems and response to climate change. | ||||
Address | |||||
Corporate Author | Thesis | ||||
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 | 1466-822x | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | doi: 10.1111/geb.12803 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 845 | ||
Permanent link to this record | |||||
Author | Bruelheide, H.; Dengler, J.; Purschke, O.; Lenoir, J.; Jiménez-Alfaro, B.; Hennekens, S.M.; Botta-Dukát, Z.; Chytrý, M.; Field, R.; Jansen, F.; Kattge, J.; Pillar, V.D.; Schrodt, F.; Mahecha, M.D.; Peet, R.K.; Sandel, B.; van Bodegom, P.; Altman, J.; Alvarez-Dávila, E.; Arfin Khan, M.A.S.; Attorre, F.; Aubin, I.; Baraloto, C.; Barroso, J.G.; Bauters, M.; Bergmeier, E.; Biurrun, I.; Bjorkman, A.D.; Blonder, B.; Čarni, A.; Cayuela, L.; Černý, T.; Cornelissen, J.H.C.; Craven, D.; Dainese, M.; Derroire, G.; De Sanctis, M.; Díaz, S.; Doležal, J.; Farfan-Rios, W.; Feldpausch, T.R.; Fenton, N.J.; Garnier, E.; Guerin, G.R.; Gutiérrez, A.G.; Haider, S.; Hattab, T.; Henry, G.; Hérault, B.; Higuchi, P.; Hölzel, N.; Homeier, J.; Jentsch, A.; Jürgens, N.; Kącki, Z.; Karger, D.N.; Kessler, M.; Kleyer, M.; Knollová, I.; Korolyuk, A.Y.; Kühn, I.; Laughlin, D.C.; Lens, F.; Loos, J.; Louault, F.; Lyubenova, M.I.; Malhi, Y.; Marcenò, C.; Mencuccini, M.; Müller, J.V.; Munzinger, J.; Myers-Smith, I.H.; Neill, D.A.; Niinemets, Ü.; Orwin, K.H.; Ozinga, W.A.; Penuelas, J.; Pérez-Haase, A.; Petřík, P.; Phillips, O.L.; Pärtel, M.; Reich, P.B.; Römermann, C.; Rodrigues, A.V.; Sabatini, F.M.; Sardans, J.; Schmidt, M.; Seidler, G.; Silva Espejo, J.E.; Silveira, M.; Smyth, A.; Sporbert, M.; Svenning, J.-C.; Tang, Z.; Thomas, R.; Tsiripidis, I.; Vassilev, K.; Violle, C.; Virtanen, R.; Weiher, E.; Welk, E.; Wesche, K.; Winter, M.; Wirth, C.; Jandt, U. | ||||
Title | Global trait–environment relationships of plant communities | Type | Journal Article | ||
Year | 2018 | Publication | Nature Ecology & Evolution | Abbreviated Journal | |
Volume | 2 | Issue | 12 | Pages | 1906-1917 |
Keywords | |||||
Abstract | Plant functional traits directly affect ecosystem functions. At the species level, trait combinations depend on trade-offs representing different ecological strategies, but at the community level trait combinations are expected to be decoupled from these trade-offs because different strategies can facilitate co-existence within communities. A key question is to what extent community-level trait composition is globally filtered and how well it is related to global versus local environmental drivers. Here, we perform a global, plot-level analysis of trait–environment relationships, using a database with more than 1.1 million vegetation plots and 26,632 plant species with trait information. Although we found a strong filtering of 17 functional traits, similar climate and soil conditions support communities differing greatly in mean trait values. The two main community trait axes that capture half of the global trait variation (plant stature and resource acquisitiveness) reflect the trade-offs at the species level but are weakly associated with climate and soil conditions at the global scale. Similarly, within-plot trait variation does not vary systematically with macro-environment. Our results indicate that, at fine spatial grain, macro-environmental drivers are much less important for functional trait composition than has been assumed from floristic analyses restricted to co-occurrence in large grid cells. Instead, trait combinations seem to be predominantly filtered by local-scale factors such as disturbance, fine-scale soil conditions, niche partitioning and biotic interactions. | ||||
Address | |||||
Corporate Author | Thesis | ||||
Publisher | Place of Publication | Editor | |||
Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 2397-334x | ISBN | Medium | ||
Area | Expedition | Conference | |||
Notes | Approved | no | |||
Call Number | EcoFoG @ webmaster @ Bruelheide2018 | Serial | 844 | ||
Permanent link to this record | |||||
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 | ||||
Corporate Author | Thesis | ||||
Publisher | Blackwell Publishing Ltd | Place of Publication | Editor | ||
Language | Summary Language | Original Title | |||
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0028646x (Issn) | ISBN | Medium | ||
Area | Expedition | Conference | |||
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; Baraloto, C., Goldberg, D.E., Bonal, D., Performance trade-offs among tropical tree seedlings in contrasting microhabitats (2005) Ecology, 86, pp. 2461-2472; Baraloto, C., Hardy, O.J., Paine, C., Dexter, K.G., Cruaud, C., Dunning, L.T., Gonzalez, M.A., Savolainen, V., Using functional traits and phylogenetic trees to examine the assembly of tropical tree communities (2012) Journal of Ecology, 100, pp. 690-701; Barnard, D.M., Meinzer, F.C., Lachenbruch, B., McCulloh, K.A., Johnson, D.M., Woodruff, D.R., Climate-related trends in sapwood biophysical properties in two conifers: avoidance of hydraulic dysfunction through coordinated adjustments in xylem efficiency, safety and capacitance (2011) Plant, Cell & Environment, 34, pp. 643-654; Bartlett, M.K., Scoffoni, C., Sack, L., The determinants of leaf turgor loss point and prediction of drought tolerance of species and biomes: a global meta-analysis (2012) Ecology Letters, 15, pp. 393-405; Beer, C., Reichstein, M., Tomelleri, E., Ciais, P., Jung, M., Carvalhais, N., Rodenbeck, C., Bonan, G.B., Terrestrial gross carbon dioxide uptake: global distribution and covariation with climate (2010) Science, 329, pp. 834-838; Benjamini, Y., Hochberg, Y., On the adaptive control of the false discovery rate in multiple testing with independent statistics (2000) Journal of educational and Behavioral Statistics, 25, pp. 60-83; Bonal, D., Bosc, A., Ponton, S., Goret, J.-Y., Burban, B., Gross, P., Bonnefond, J., Epron, D., Impact of severe dry season on net ecosystem exchange in the Neotropical rainforest of French Guiana (2008) Global Change Biology, 14, pp. 1917-1933; Bonal, D., Burban, B., Stahl, C., Wagner, F., Herault, B., The response of tropical rainforests to drought-lessons from recent research and future prospects (2016) Annals of Forest Science, 73, pp. 27-44; Borchert, R., Pockman, W.T., Water storage capacitance and xylem tension in isolated branches of temperate and tropical trees (2005) Tree Physiology, 25, pp. 457-466; Bucci, S.J., Goldstein, G., Scholz, F.G., Meinzer, F.C., Physiological significance of hydraulic segmentation, nocturnal transpiration and capacitance in tropical trees: paradigms revisited (2016) Tropical tree physiology: adaptations and responses in a changing environment, pp. 205-225. , In, Goldstein G, Santiago LS, eds., Cham, Switzerland, Springer International; Chave, J., Coomes, D., Jansen, S., Lewis, S.L., Swenson, N.G., Zanne, A.E., Towards a worldwide wood economics spectrum (2009) Ecology Letters, 12, pp. 351-366; Choat, B., Drayton, W.M., Brodersen, C., Matthews, M.A., Shackel, K.A., Wada, H., McElrone, A.J., Measurement of vulnerability to water stress-induced cavitation in grapevine: a comparison of four techniques applied to a long-vesseled species (2010) Plant, Cell & Environment, 33, pp. 1502-1512; Choat, B., Jansen, S., Brodribb, T.J., Cochard, H., Delzon, S., Bhaskar, R., Bucci, S.J., Hacke, U.G., Global convergence in the vulnerability of forests to drought (2012) Nature, 491, pp. 752-755; Christoffersen, B.O., Gloor, M., Fauset, S., Fyllas, N.M., Galbraith, D.R., Baker, T.R., Kruijt, B., Binks, O.J., Linking hydraulic traits to tropical forest function in a size-structured and trait-driven model (TFS v. 1-Hydro) (2016) Geoscientific Model Development, 9, pp. 4227-4255; De Guzman, M.E., Santiago, L.S., Schnitzer, S.A., Álvarez-Cansino, L., Trade-offs between water transport capacity and drought resistance in neotropical canopy liana and tree species (2017) Tree Physiology, 37, pp. 1404-1414; Dray, S., Dufour, A.-B., The ade4 package: implementing the duality diagram for ecologists (2007) Journal of Statistical Software, 22, pp. 1-20; Fortunel, C., Ruelle, J., Beauchene, J., Fine, P.V.A., Baraloto, C., Wood specific gravity and anatomy of branches and roots in 113 Amazonian rainforest tree species across environmental gradients (2014) New Phytologist, 202, pp. 79-94; Fu, R., Yin, L., Li, W.H., Arias, P.A., Dickinson, R.E., Huang, L., Chakraborty, S., Fisher, R., Increased dry-season length over southern Amazonia in recent decades and its implication for future climate projection (2013) Proceedings of the National Academy of Sciences, USA, 110, pp. 18110-18115; Gleason, S.M., Westoby, M., Jansen, S., Choat, B., Hacke, U.G., Pratt, R.B., Bhaskar, R., Cao, K.-F., Weak tradeoff between xylem safety and xylem-specific hydraulic efficiency across the world's woody plant species (2016) New Phytologist, 209, pp. 123-136; Gourlet-Fleury, S., Guehl, J.-M., Laroussinie, O., (2004) Ecology and management of a neotropical rainforest. Lessons drawn from Paracou, a long-term experimental research site in French Guiana, , Paris, France, Elsevier; Hacke, U.G., Sperry, J.S., Wheeler, J.K., Castro, L., Scaling of angiosperm xylem structure with safety and efficiency (2006) Tree Physiology, 26, pp. 689-701; Holtum, J.A.M., Winter, K., Elevated [CO2] and forest vegetation: more a water issue than a carbon issue? (2010) Functional Plant Biology, 37, pp. 694-702; Huntingford, C., Zelazowski, P., Galbraith, D., Mercado, L.M., Sitch, S., Fisher, R., Lomas, M., Booth, B.B.B., Simulated resilience of tropical rainforests to CO2-induced climate change (2013) Nature Geoscience, 6, pp. 268-273; Joetzjer, E., Delire, C., Douville, H., Ciais, P., Decharme, B., Fisher, R., Christoffersen, B., Ferreira, L.V., Predicting the response of the Amazon rainforest to persistent drought conditions under current and future climates: a major challenge for global land surface models (2014) Geoscientific Model Development, 7, pp. 2933-2950; Joetzjer, E., Douville, H., Delire, C., Ciais, P., Present-day and future Amazonian precipitation in global climate models: CMIP5 versus CMIP3 (2013) Climate Dynamics, 41, pp. 2921-2936; Kattge, J., Díaz, S., Lavorel, S., Prentice, I.C., Leadley, P., Bönisch, G., Garnier, E., Wright, I.J., TRY – a global database of plant traits (2011) Global Change Biology, 17, pp. 2905-2935; Maherali, H., Pockman, W.T., Jackson, R.B., Adaptive variation in the vulnerability of woody plants to xylem cavitation (2004) Ecology, 85, pp. 2184-2199; Manzoni, S., Vico, G., Katul, G., Palmroth, S., Jackson, R.B., Porporato, A., Hydraulic limits on maximum plant transpiration and the emergence of the safety–efficiency trade-off (2013) New Phytologist, 198, pp. 169-178; Maréchaux, I., Bartlett, M.K., Sack, L., Baraloto, C., Engel, J., Joetzjer, E., Chave, J., Drought tolerance as predicted by leaf water potential at turgor loss point varies strongly across species within an Amazonian forest (2015) Functional Ecology, 29, pp. 1268-1277; Martínez-Vilalta, J., Piñol, J., Beven, K., A hydraulic model to predict drought-induced mortality in woody plants: an application to climate change in the Mediterranean (2002) Ecological Modelling, 155, pp. 127-147; Medlyn, B.E., De Kauwe, M.G., Duursma, R.A., New developments in the effort to model ecosystems under water stress (2016) New Phytologist, 212, pp. 5-7; Meinzer, F.C., Goldstein, G., Scaling up from leaves to whole plants and canopies for photosynthetic gas exchange (1996) Tropical forest plant ecophysiology, pp. 114-138. , In, Mulkey SS, Chazdon RL, Smith AP, eds., New York, NY, USA, Chapman & Hall; Meinzer, F.C., James, S.A., Goldstein, G., Woodruff, D., Whole-tree water transport scales with sapwood capacitance in tropical forest canopy trees (2003) Plant, Cell & Environment, 26, pp. 1147-1155; Meinzer, F.C., Johnson, D.M., Lachenbruch, B., McCulloh, K.A., Woodruff, D.R., Xylem hydraulic safety margins in woody plants: coordination of stomatal control of xylem tension with hydraulic capacitance (2009) Functional Ecology, 23, pp. 922-930; Meinzer, F.C., Woodruff, D.R., Domec, J.C., Goldstein, G., Campanello, P.I., Gatti, M.G., Villalobos-Vega, R., Coordination of leaf and stem water transport properties in tropical forest trees (2008) Oecologia, 156, pp. 31-41; Mencuccini, M., Minunno, F., Salmon, Y., Martínez-Vilalta, J., Hölttä, T., Coordination of physiological traits involved in drought-induced mortality of woody plants (2015) New Phytologist, 208, pp. 396-409; Morris, H., Plavcova, L., Cvecko, P., Fichtler, E., Gillingham, M.A.F., Martinez-Cabrera, H.I., McGlinn, D.J., Zieminska, K., A global analysis of parenchyma tissue fractions in secondary xylem of seed plants (2016) New Phytologist, 209, pp. 1553-1565; Phillips, O.L., van der Heijden, G., Lewis, S.L., Lopez-Gonzalez, G., Aragao, L., Lloyd, J., Malhi, Y., Davila, E.A., Drought-mortality relationships for tropical forests (2010) New Phytologist, 187, pp. 631-646; Pike, N., Using false discovery rates for multiple comparisons in ecology and evolution (2011) Methods in Ecology and Evolution, 2, pp. 278-282; Pivovaroff, A.L., Pasquini, S.C., De Guzman, M.E., Alstad, K.P., Stemke, J., Santiago, L.S., Multiple strategies for drought survival among woody plant species (2016) Functional Ecology, 30, pp. 517-526; Pockman, W.T., Sperry, J.S., Vulnerability to xylem cavitation and the distribution of Sonoran desert vegetation (2000) American Journal of Botany, 87, pp. 1287-1299; Preston, K.A., Cornwell, W.K., DeNoyer, J.L., Wood density and vessel traits as distinct correlates of ecological strategy in 51 California coast range angiosperms (2006) New Phytologist, 170, pp. 807-818; (2015) R: a language and environment for statistical computing, , Vienna, Austria, R Core Development Team; Saatchi, S.S., Harris, N.L., Brown, S., Lefsky, M., Mitchard, E.T.A., Salas, W., Zutta, B.R., Hagen, S., Benchmark map of forest carbon stocks in tropical regions across three continents (2011) Proceedings of the National Academy of Sciences, USA, 108, pp. 9899-9904; Sack, L., Pasquet-Kok, J., (2011) Leaf pressure–volume curve parameters, , http://prometheuswiki.publish.csiro.au/tiki-index.php?page=Leaf+pressure-volume+curve+parameters, [WWW document] URL, [accessed 9 August 2016] In Prometheus Wiki; Santiago, L.S., Bonal, D., De Guzman, M.E., Ávila-Lovera, E., Drought survival strategies of tropical trees (2016) Tropical tree physiology: adaptations and responses in a changing environment, pp. 243-258. , In, Goldstein G, Santiago LS, eds., Cham, Switzerland, Springer International; Santiago, L.S., Goldstein, G., Meinzer, F.C., Fisher, J.B., Machado, K., Woodruff, D., Jones, T., Leaf photosynthetic traits scale with hydraulic conductivity and wood density in Panamanian forest canopy trees (2004) Oecologia, 140, pp. 543-550; Scholz, F.G., Bucci, S.J., Goldstein, G., Meinzer, F.C., Franco, A.C., Miralles-Wilhelm, F., Biophysical properties and functional significance of stem water storage tissues in Neotropical savanna trees (2007) Plant, Cell & Environment, 30, pp. 236-248; Scholz, F., Phillips, N., Bucci, S., Meinzer, F., Goldstein, G., Hydraulic capacitance: biophysics and functional significance of internal water sources in relation to tree size (2011) Size- and age-related changes in tree structure and function, pp. 341-361. , In, Meinzer FC, Lachenbruch B, Dawson TE, eds., Dordrecht, the Netherlands, Springer; Sperry, J.S., Donnelly, J.R., Tyree, M.T., A method for measuring hydraulic conductivity and embolism in xylem (1988) Plant, Cell & Environment, 11, pp. 35-40; Sperry, J.S., Meinzer, F.C., McCulloh, K.A., Safety and efficiency conflicts in hydraulic architecture: scaling from tissues to trees (2008) Plant, Cell & Environment, 31, pp. 632-645; ter Steege, H., Pitman, N.C.A., Phillips, O.L., Chave, J., Sabatier, D., Duque, A., Molino, J.-F., Castellanos, H., Continental-scale patterns of canopy tree composition and function across Amazonia (2006) Nature, 443, pp. 444-447; Taiz, L., Zeiger, E., Møller, I.M., Murphy, A., (2015) Plant physiology and development, , Sunderland, MA, USA, Sinauer Associates; Tyree, M., Negative turgor pressure in plant cells: fact or fallacy? (1976) Canadian Journal of Botany, 54, pp. 2738-2746; Tyree, M.T., Davis, S.D., Cochard, H., Biophysical perspectives of xylem evolution: is there a tradeoff of hydraulic efficiency for vulnerability to dysfunction? (1994) IAWA Journal, 15, pp. 335-360; Tyree, M.T., Ewers, F.W., The hydraulic architecture of trees and other woody plants (1991) New Phytologist, 119, pp. 345-360; Webb, C.O., Donoghue, M.J., Phylomatic: tree assembly for applied phylogenetics (2005) Molecular Ecology Notes, 5, pp. 181-183; Wheeler, J.K., Sperry, J.S., Hacke, U.G., Hoang, N., Inter-vessel pitting and cavitation in woody Rosaceae and other vesselled plants: a basis for a safety versus efficiency trade-off in xylem transport (2005) Plant, Cell & Environment, 28, pp. 800-812; Xu, C., McDowell, N.G., Sevanto, S., Fisher, R.A., Our limited ability to predict vegetation dynamics under water stress (2013) New Phytologist, 200, pp. 298-300; Xu, X.T., Medvigy, D., Powers, J.S., Becknell, J.M., Guan, K.Y., Diversity in plant hydraulic traits explains seasonal and inter-annual variations of vegetation dynamics in seasonally dry tropical forests (2016) New Phytologist, 212, pp. 80-95; Zanne, A.E., Tank, D.C., Cornwell, W.K., Eastman, J.M., Smith, S.A., FitzJohn, R.G., McGlinn, D.J., Reich, P.B., Three keys to the radiation of angiosperms into freezing environments (2014) Nature, 506, pp. 89-92; Zanne, A.E., Westoby, M., Falster, D.S., Ackerly, D.D., Loarie, S.R., Arnold, S.E.J., Coomes, D.A., Angiosperm wood structure: global patterns in vessel anatomy and their relation to wood density and potential conductivity (2010) American Journal of Botany, 97, pp. 207-215 | Approved | no | ||
Call Number | EcoFoG @ webmaster @ | Serial | 842 | ||
Permanent link to this record |