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Robillard, T.; ter Hofstede, H.M.; Orivel, J.; Vicente, N.M. |
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Title |
Bioacoustics of the Neotropical Eneopterinae (Orthoptera, Grylloidea, Gryllidae) |
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Journal Article |
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2015 |
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Bioacoustics |
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Bioacoustics |
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24 |
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2 |
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123-143 |
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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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Taylor & Francis |
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0952-4622 |
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doi: 10.1080/09524622.2014.996915 |
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EcoFoG @ webmaster @ |
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651 |
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ter Steege, H.; Pitman, N.C.A.; Killeen, T.J.; Laurance, W.F.; Peres, C.A.; Guevara, J.E.; Salomão, R.P.; Castilho, C.V.; Amaral, I.L.; de Almeida Matos, F.D.; de Souza Coelho, L.; Magnusson, W.E.; Phillips, O.L.; de Andrade Lima Filho, D.; de Jesus Veiga Carim, M.; Irume, M.V.; Martins, M.P.; Molino, J.-F.; Sabatier, D.; Wittmann, F.; López, D.C.; da Silva Guimarães, J.R.; Mendoza, A.M.; Vargas, P.N.; Manzatto, A.G.; Reis, N.F.C.; Terborgh, J.; Casula, K.R.; Montero, J.C.; Feldpausch, T.R.; Honorio Coronado, E.N.; Montoya, A.J.D.; Zartman, C.E.; Mostacedo, B.; Vasquez, R.; Assis, R.L.; Medeiros, M.B.; Simon, M.F.; Andrade, A.; Camargo, J.L.; Laurance, S.G.W.; Nascimento, H.E.M.; Marimon, B.S.; Marimon, B.-H.; Costa, F.; Targhetta, N.; Vieira, I.C.G.; Brienen, R.; Castellanos, H.; Duivenvoorden, J.F.; Mogollón, H.F.; Piedade, M.T.F.; Aymard C., G.A.; Comiskey, J.A.; Damasco, G.; Dávila, N.; García-Villacorta, R.; Diaz, P.R.S.; Vincentini, A.; Emilio, T.; Levis, C.; Schietti, J.; Souza, P.; Alonso, A.; Dallmeier, F.; Ferreira, L.V.; Neill, D.; Araujo-Murakami, A.; Arroyo, L.; Carvalho, F.A.; Souza, F.C.; Amaral, D.D. do; Gribel, R.; Luize, B.G.; Pansonato, M.P.; Venticinque, E.; Fine, P.; Toledo, M.; Baraloto, C.; Cerón, C.; Engel, J.; Henkel, T.W.; Jimenez, E.M.; Maas, P.; Mora, M.C.P.; Petronelli, P.; Revilla, J.D.C.; Silveira, M.; Stropp, J.; Thomas-Caesar, R.; Baker, T.R.; Daly, D.; Paredes, M.R.; da Silva, N.F.; Fuentes, A.; Jørgensen, P.M.; Schöngart, J.; Silman, M.R.; Arboleda, N.C.; Cintra, B.B.L.; Valverde, F.C.; Di Fiore, A.; Phillips, J.F.; van Andel, T.R.; von Hildebrand, P.; Barbosa, E.M.; de Matos Bonates, L.C.; de Castro, D.; de Sousa Farias, E.; Gonzales, T.; Guillaumet, J.-L.; Hoffman, B.; Malhi, Y.; de Andrade Miranda, I.P.; Prieto, A.; Rudas, A.; Ruschell, A.R.; Silva, N.; Vela, C.I.A.; Vos, V.A.; Zent, E.L.; Zent, S.; Cano, A.; Nascimento, M.T.; Oliveira, A.A.; Ramirez-Angulo, H.; Ramos, J.F.; Sierra, R.; Tirado, M.; Medina, M.N.U.; van der Heijden, G.; Torre, E.V.; Vriesendorp, C.; Wang, O.; Young, K.R.; Baider, C.; Balslev, H.; de Castro, N.; Farfan-Rios, W.; Ferreira, C.; Mendoza, C.; Mesones, I.; Torres-Lezama, A.; Giraldo, L.E.U.; Villarroel, D.; Zagt, R.; Alexiades, M.N.; Garcia-Cabrera, K.; Hernandez, L.; Huamantupa-Chuquimaco, I.; Milliken, W.; Cuenca, W.P.; Pansini, S.; Pauletto, D.; Arevalo, F.R.; Sampaio, A.F.; Valderrama Sandoval, E.H.; Gamarra, L.V. |
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Estimating the global conservation status of more than 15,000 Amazonian tree species |
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Journal Article |
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2015 |
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Science Advances |
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1 |
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10 |
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Estimates of extinction risk for Amazonian plant and animal species are rare and not often incorporated into land-use policy and conservation planning. We overlay spatial distribution models with historical and projected deforestation to show that at least 36% and up to 57% of all Amazonian tree species are likely to qualify as globally threatened under International Union for Conservation of Nature (IUCN) Red List criteria. If confirmed, these results would increase the number of threatened plant species on Earth by 22%. We show that the trends observed in Amazonia apply to trees throughout the tropics, and we predict that most of the world’s >40,000 tropical tree species now qualify as globally threatened. A gap analysis suggests that existing Amazonian protected areas and indigenous territories will protect viable populations of most threatened species if these areas suffer no further degradation, highlighting the key roles that protected areas, indigenous peoples, and improved governance can play in preventing large-scale extinctions in the tropics in this century. |
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EcoFoG @ webmaster @ |
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665 |
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Rossi, V.;Dolley, T.; Cornu, G.; Guitet, S.;Herault, B. |
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GuyaSim : un outil d’aide à la décision pour l’aménagement d’un territoire forestier, la Guyane |
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2015 |
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Bois et Forets des Tropiques |
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326 |
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4 |
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67-78 |
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GIS software; scenarios; ecosystem services; simulator; biodiversity; carbon stock; biomass; logging; deforestation; land use changes; tropical forest; French Guiana |
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Planning policies for rapid development in French Guiana will require the conversion of forested areas, thus contributing to glo- bal warming. Guiana’s policy-makers will need to integrate the preservation of eco- system services into their planning deci- sions. The GuyaSim project was conduc- ted to produce more in-depth knowledge on these services (carbon sequestration, biodiversity and soil quality) and to trans- fer a software application, GuyaSim, to policy-makers to facilitate the use of this knowledge in the development of plan- ning policies. This article presents the characteristics of the application. Guya- Sim is a freeware package of the GIS type designed initially for local authority plan- ners and forestry departments in French Guiana. The application has two main functions:
information delivery and sup-
port for planning decisions. The informa- tion provided includes socio-economic development scenarios, climate scenarios and valuations of ecosystem services. The decision-support component consists of tools for building planning scenarios (land use changes) and forestry scenarios (log- ging), with information on their environ- mental impacts. The functionalities of the software are currently limited by the state of knowledge on Guiana’s ecosystems. Advances made through current research projects are expected to upgrade the application in the medium term. |
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EcoFoG @ webmaster @ |
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666 |
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Amusant, N.; Digeon, A.; Descroix, L.; Bruneau, O.; Bezard, V.; Beauchene, J. |
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Planting rosewood for sustainable essential oil production: Influence of surrounding forest and seed provenance on tree growth and essential oil yields |
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2015 |
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Bois et Forets des Tropiques |
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Bois et Forets des Tropiques |
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326 |
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4 |
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57-65 |
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Aniba rosaeodora Ducke; Dendrometric traits; Essential oil yield; French Guiana; Light effect; Plantation; Rosewood; Seed provenance |
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Essential oil from the Amazonian rosewood tree (Aniba rosaeodora Ducke) is valued as an important aromatic ingredient in luxury perfumes. Due to over-harvesting in recent decades, rosewood is now listed as an endangered species. Rosewood tree planting is now considered a viable alternative to logging as it can support both reforestation and sustainable agriculture thanks to sales of the essential oil extracted. We planted 605 rosewood trees in French Guiana from two seeds of local provenance, in a 5 445 m2 plot surrounded by primary forest. Nine years after planting, we assessed the effect of the position of the tree relative to the surrounding forest and of the seed provenance on dendrometric traits (height, circumference, above ground woody biomass) and hence on the yield of essential oil. Measurements were made on 99 trees. Average growth rates for the young trees were 0.7 m/year in height, 2.5 cm/year in stem circumference and 990.5 kg dry mass/ha/year in aboveground biomass, while essential oil yields ranged from 0.6% to 3.6% with a mean of 2.1%. The position of the tree relative to the surrounding forest was the main factor affecting tree growth and essential oil production: trees located close to the surrounding forest were significantly smaller and accumulated less essential oil due to the reduced availability of light. Seed provenance had less effect on dendrometric traits and essential oil yields. In conclusion, although planting practices will need to be adapted to avoid the edge effects of proximity to the forest, short-rotation cultivation of rosewood trees could be the optimum and most economically attractive system for the production of essential oil. |
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Office National des Forêts (ONF), Département R and D, Pôle de Cayenne, Réserve de Montabo, BP 87002, Cayenne Cedex, French Guiana |
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Export Date: 7 March 2016 |
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670 |
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Roussel, J.-R.; Clair, B. |
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Evidence of the late lignification of the G-layer in Simarouba tension wood, to assist understanding how non-G-layer species produce tensile stress |
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Journal Article |
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2015 |
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Tree Physiology |
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Tree Physiology |
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35 |
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12 |
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1366-1377 |
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maturation stress generation; ontogeny; Simarouba amara Aubl.; tension wood cell wall; tree biomechanics |
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To recover verticality after disturbance, angiosperm trees produce 'tension wood' allowing them to bend actively. The driving force of the tension has been shown to take place in the G-layer, a specific unlignified layer of the cell wall observed in most temperate species. However, in tropical rain forests, the G-layer is often absent and the mechanism generating the forces to reorient trees remains unclear. A study was carried out on tilted seedlings, saplings and adult Simarouba amara Aubl. trees – a species known to not produce a G-layer. Microscopic observations were done on sections of normal and tension wood after staining or observed under UV light to assess the presence/absence of lignin. We showed that S. amara produces a cell-wall layer with all of the characteristics typical of G-layers, but that this G-layer can be observed only as a temporary stage of the cell-wall development because it is masked by a late lignification. Being thin and lignified, tension wood fibres cannot be distinguished from normal wood fibres in the mature wood of adult trees. These observations indicate that the mechanism generating the high tensile stress in tension wood is likely to be the same as that in species with a typical G-layer and also in species where the G-layer cannot be observed in mature cells. © 2015 The Author 2015. Published by Oxford University Press. All rights reserved. |
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CNRS, UMR Ecologie des Forêts de Guyane (EcoFoG), Campus Agronomique, BP 701, Kourou, France |
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Export Date: 25 March 2016 |
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Falster, D.S.; Duursma, R.A.; Ishihara, M.I.; Barneche, D.R.; FitzJohn, R.G.; Vårhammar, A.; Aiba, M.; Ando, M.; Anten, N.; Aspinwall, M.J.; Baltzer, J.L.; Baraloto, C.; Battaglia, M.; Battles, J.J.; Lamberty, B.B.; Van Breugel, M.; Camac, J.; Claveau, Y.; Coll, L.; Dannoura, M.; Delagrange, S.; Domec, J.C.; Fatemi, F.; Feng, W.; Gargaglione, V.; Goto, Y.; Hagihara, A.; Hall, J.S.; Hamilton, S.; Harja, D.; Hiura, T.; Holdaway, R.; Hutley, L.B.; Ichie, T.; Jokela, E.J.; Kantola, A.; Kelly, J.W.G.; Kenzo, T.; King, D.; Kloeppel, B.D.; Kohyama, T.; Komiyama, A.; Laclau, J.P.; Lusk, C.H.; Maguire, D.A.; Le Maire, G.; Mäkelä, A.; Markesteijn, L.; Marshall, J.; McCulloh, K.; Miyata, I.; Mokany, K.; Mori, S.; Myster, R.W.; Nagano, M.; Naidu, S.L.; Nouvellon, Y.; O'Grady, A.P.; O'Hara, K.L.; Ohtsuka, T.; Osada, N.; Osunkoya, O.O.; Peri, P.L.; Petritan, A.M.; Poorter, L.; Portsmuth, A.; Potvin, C.; Ransijn, J.; Reid, D.; Ribeiro, S.C.; Roberts, S.D.; Rodríguez, R.; Acosta, A.S.; Santa-Regina, I.; Sasa, K.; Selaya, N.G.; Sillett, S.C.; Sterck, F.; Takagi, K.; Tange, T.; Tanouchi, H.; Tissue, D.; Umehara, T.; Utsugi, H.; Vadeboncoeur, M.A.; Valladares, F.; Vanninen, P.; Wang, J.R.; Wenk, E.; Williams, R.; De Aquino Ximenes, F.; Yamaba, A.; Yamada, T.; Yamakura, T.; Yanai, R.D.; York, R.A. |
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BAAD: a Biomass And Allometry Database for woody plants |
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2015 |
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Ecology |
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Ecology |
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96 |
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5 |
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1445 |
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Allometric equations; Biomass allocation; Biomass partitioning; Global carbon cycle; Plant allometry; Plant traits |
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Understanding how plants are constructed; i.e., how key size dimensions and the amount of mass invested in different tissues varies among individuals; is essential for modeling plant growth, estimating carbon stocks, and mapping energy fluxes in the terrestrial biosphere. Allocation patterns can differ through ontogeny, but also among coexisting species and among species adapted to different environments. While a variety of models dealing with biomass allocation exist, we lack a synthetic understanding of the underlying processes. This is partly due to the lack of suitable data sets for validating and parameterizing models. To that end, we present the Biomass and allometry database (BAAD) for woody plants. The BAAD contains 259 634 measurements collected in 176 different studies, from 21 084 individuals across 678 species. Most of these data come from existing publications. However, raw data were rarely made public at time of publication. Thus the BAAD contains individual level data from different studies, transformed into standard units and variable names. The transformations were achieved using a common workflow for all raw data files. Other features that distinguish the BAAD are: (i) measurements were for individual plants rather than stand averages; (ii) individuals spanning a range of sizes were measured; (iii) inclusion of plants from 0.01-100 m in height; and (iii) biomass was estimated directly, i.e., not indirectly via allometric equations (except in very large trees where biomass was estimated from detailed subsampling). We included both wild and artificially grown plants. The data set contains the following size metrics: total leaf area; area of stem crosssection including sapwood, heartwood, and bark; height of plant and crown base, crown area, and surface area; and the dry mass of leaf, stem, branches, sapwood, heartwood, bark, coarse roots, and fine root tissues. We also report other properties of individuals (age, leaf size, leaf mass per area, wood density, nitrogen content of leaves and wood), as well as information about the growing environment (location, light, experimental treatment, vegetation type) where available. It is our hope that making these data available will improve our ability to understand plant growth, ecosystem dynamics, and carbon cycling in the world's vegetation. |
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Department of Disturbance Ecology, University of Bayreuth, Germany |
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Export Date: 1 September 2016 |
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Lenoir, A.; Devers, S.; Touchard, A.; Dejean, A. |
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The Guianese population of the fire ant Solenopsis saevissima is unicolonial |
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2016 |
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Insect Science |
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Insect Science |
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23 |
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5 |
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739-745 |
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biological invasions; cuticular hydrocarbons; fire ants; unicoloniality |
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In this study, conducted in French Guiana, a part of the native range of the fire ant Solenopsis saevissima, we compared the cuticular hydrocarbon profiles of media workers with previous results based on intraspecific aggressiveness tests. We noted a strong congruence between the two studies permitting us to delimit 2 supercolonies extending over large distances (up to 54 km), a phenomenon known as unicoloniality. Solenopsis geminata workers, taken as an out-group for cluster analyses, have a very different cuticular hydrocarbon profile. Because S. saevissima has been reported outside its native range, our conclusion is that this species has the potential to become invasive because unicoloniality (i.e., the main attribute for ants to become invasive) was shown at least for the Guianese population. © 2015 Institute of Zoology, Chinese Academy of Sciences |
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CNRS, Ecolab (UMR-CNRS 5245), Toulouse, France |
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Export Date: 3 October 2016 |
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696 |
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Pavoine, S.; Marcon, E.; Ricotta, C. |
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‘Equivalent numbers’ for species, phylogenetic or functional diversity in a nested hierarchy of multiple scales |
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2016 |
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Methods in Ecology and Evolution |
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Methods in Ecology and Evolution |
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7 |
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10 |
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1152-1163 |
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alpha diversity; beta diversity; biodiversity; community ecology; community phylogenetics; diversity apportionment; gamma diversity; quadratic entropy |
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Many recent studies have searched to integrate species’ functions and phylogenies in the measurement of biodiversity. To obtain easily interpretable measures, some researchers recommended diversity indices expressed in terms of equivalent numbers of species: the number of equally likely and maximally dissimilar species needed to produce the given value of diversity. Then, biodiversity is often calculated at three scales: within communities (α diversity), among communities (β diversity) and in a region (γ diversity). These three scales are, however, insufficient to tackle the organization of biodiversity in space because, for most organisms, there is a nested hierarchy of multiple scales characterized by different patterns and processes, from the small neighbourhood to the biosphere. We developed methodologies for analysing species, functional, taxonomic or phylogenetic diversity in a hierarchy of multiple scales using equivalent numbers of species. As an example, we analysed the taxonomic and functional diversity of macroinvertebrate assemblages in the Loire River, France, at four levels: within sites (α diversity), among sites within geological regions (β1 diversity), among geological regions (β2 diversity) and at the river scale (γ diversity). The new hierarchical approaches of biodiversity revealed very low differences among sites within regions and among regions in terms of taxonomy and functional traits (size and diet), despite moderate, significant species turnover among geological regions. We compare our framework with those other authors have developed. We argue that different definitions of α, β, γ diversities are used in the literature reflecting different points of view on biodiversity. We make recommendations on how to normalize functional (or phylogenetic) dissimilarities among species to render sites and regions comparable, and discuss the pros and cons of our approach. The hierarchical approaches of biodiversity in terms of ‘equivalent numbers’ respond to current demands to obtain intuitive, easily interpretable components of biodiversity. The approaches we propose go beyond current developments by considering a hierarchy of spatial scales and unbalanced sampling design. They will provide powerful tools to detect the ecological and evolutionary processes that act differently at different scales. © 2016 The Authors. Methods in Ecology and Evolution © 2016 British Ecological Society |
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Department of Environmental Biology, University of Rome ‘La Sapienza’, Piazzale Aldo Moro 5, Rome, Italy |
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Export Date: 20 October 2016 |
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Verheyen, K.; Vanhellemont, M.; Auge, H.; Baeten, L.; Baraloto, C.; Barsoum, N.; Bilodeau-Gauthier, S.; Bruelheide, H.; Castagneyrol, B.; Godbold, D.; Haase, J.; Hector, A.; Jactel, H.; Koricheva, J.; Loreau, M.; Mereu, S.; Messier, C.; Muys, B.; Nolet, P.; Paquette, A.; Parker, J.; Perring, M.; Ponette, Q.; Potvin, C.; Reich, P.; Smith, A.; Weih, M.; Scherer-Lorenzen, M. |
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Contributions of a global network of tree diversity experiments to sustainable forest plantations |
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Journal Article |
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2016 |
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Ambio |
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Ambio |
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45 |
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1 |
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29-41 |
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Biodiversity experiments; Ecological restoration; Functional biodiversity research; Plantation forest; Sustainable forest management |
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The area of forest plantations is increasing worldwide helping to meet timber demand and protect natural forests. However, with global change, monospecific plantations are increasingly vulnerable to abiotic and biotic disturbances. As an adaption measure we need to move to plantations that are more diverse in genotypes, species, and structure, with a design underpinned by science. TreeDivNet, a global network of tree diversity experiments, responds to this need by assessing the advantages and disadvantages of mixed species plantations. The network currently consists of 18 experiments, distributed over 36 sites and five ecoregions. With plantations 1–15 years old, TreeDivNet can already provide relevant data for forest policy and management. In this paper, we highlight some early results on the carbon sequestration and pest resistance potential of more diverse plantations. Finally, suggestions are made for new, innovative experiments in understudied regions to complement the existing network. © 2015, Royal Swedish Academy of Sciences. |
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Department of Crop Production Ecology, Swedish University of Agricultural Sciences, PO Box 7043, Uppsala, Sweden |
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Export Date: 29 January 2016 |
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EcoFoG @ webmaster @ |
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652 |
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Kunstler, G.; Falster, D.; Coomes, D.A.; Hui, F.; Kooyman, R.M.; Laughlin, D.C.; Poorter, L.; Vanderwel, M.; Vieilledent, G.; Wright, S.J.; Aiba, M.; Baraloto, C.; Caspersen, J.; Cornelissen, J.H.C.; Gourlet-Fleury, S.; Hanewinkel, M.; Herault, B.; Kattge, J.; Kurokawa, H.; Onoda, Y.; Peñuelas, J.; Poorter, H.; Uriarte, M.; Richardson, S.; Ruiz-Benito, P.; Sun, I.-F.; Ståhl, G.; Swenson, N.G.; Thompson, J.; Westerlund, B.; Wirth, C.; Zavala, M.A.; Zeng, H.; Zimmerman, J.K.; Zimmermann, N.E.; Westoby, M. |
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Title |
Plant functional traits have globally consistent effects on competition |
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Journal Article |
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Year |
2016 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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529 |
Issue |
7585 |
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204-207 |
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Phenotypic traits and their associated trade-offs have been shown to have globally consistent effects on individual plant physiological functions, but how these effects scale up to influence competition, a key driver of community assembly in terrestrial vegetation, has remained unclear. Here we use growth data from more than 3 million trees in over 140,000 plots across the world to show how three key functional traits – wood density, specific leaf area and maximum height – consistently influence competitive interactions. Fast maximum growth of a species was correlated negatively with its wood density in all biomes, and positively with its specific leaf area in most biomes. Low wood density was also correlated with a low ability to tolerate competition and a low competitive effect on neighbours, while high specific leaf area was correlated with a low competitive effect. Thus, traits generate trade-offs between performance with competition versus performance without competition, a fundamental ingredient in the classical hypothesis that the coexistence of plant species is enabled via differentiation in their successional strategies. Competition within species was stronger than between species, but an increase in trait dissimilarity between species had little influence in weakening competition. No benefit of dissimilarity was detected for specific leaf area or wood density, and only a weak benefit for maximum height. Our trait-based approach to modelling competition makes generalization possible across the forest ecosystems of the world and their highly diverse species composition. © 2016 Macmillan Publishers Limited. All rights reserved. |
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Forestry and Forest Products Research Institute, Tsukuba, Japan |
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Cited By :1; Export Date: 29 January 2016 |
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EcoFoG @ webmaster @ |
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653 |
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