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Author De Weirdt, M.; Verbeeck, H.; Maignan, F.; Peylin, P.; Poulter, B.; Bonal, D.; Ciais, P.; Steppe, K. url  openurl
  Title Seasonal leaf dynamics for tropical evergreen forests in a process-based global ecosystem model Type Journal Article
  Year 2012 Publication Geoscientific Model Development Abbreviated Journal Geoscientific Model Dev.  
  Volume 5 Issue 5 Pages 1091-1108  
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  Abstract The influence of seasonal phenology on canopy photosynthesis in tropical evergreen forests remains poorly understood, and its representation in global ecosystem models is highly simplified, typically with no seasonal variation of canopy leaf properties taken into account. Including seasonal variation in leaf age and photosynthetic capacity could improve the correspondence of global vegetation model outputs with the wet-dry season CO2 patterns measured at flux tower sites in these forests. We introduced a leaf litterfall dynamics scheme in the global terrestrial ecosystem model ORCHIDEE based on seasonal variations in net primary production (NPP), resulting in higher leaf turnover in periods of high productivity. The modifications in the leaf litterfall scheme induce seasonal variation in leaf age distribution and photosynthetic capacity. We evaluated the results of the modification against seasonal patterns of three long-term in-situ leaf litterfall datasets of evergreen tropical forests in Panama, French Guiana and Brazil. In addition, we evaluated the impact of the model improvements on simulated latent heat (LE) and gross primary productivity (GPP) fluxes for the flux tower sites Guyaflux (French Guiana) and TapajÃ3s (km 67, Brazil). The results show that the introduced seasonal leaf litterfall corresponds well with field inventory leaf litter data and times with its seasonality. Although the simulated litterfall improved substantially by the model modifications, the impact on the modelled fluxes remained limited. The seasonal pattern of GPP improved clearly for the Guyaflux site, but no significant improvement was obtained for the TapajÃ3s site. The seasonal pattern of the modelled latent heat fluxes was hardly changed and remained consistent with the observed fluxes. We conclude that we introduced a realistic and generic litterfall dynamics scheme, but that other processes need to be improved in the model to achieve better simulations of GPP seasonal patterns for tropical evergreen forests. © Author(s) 2012. CC Attribution 3.0 License.  
  Address INRA Nancy, UMR INRA-UHP1137 Ecologie et Ecophysiologie Forestière, 54280 Champenoux, France  
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  ISSN 1991959x (Issn) ISBN Medium  
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  Notes Export Date: 4 October 2012; Source: Scopus; doi: 10.5194/gmd-5-1091-2012; Language of Original Document: English; Correspondence Address: De Weirdt, M.; Laboratory of Plant Ecology, Department of Applied Ecology and Environmental Biology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; email: marjolein.deweirdt@ugent.be Approved no  
  Call Number EcoFoG @ webmaster @ Serial 437  
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Author Marcon, E.; Puech, F.; Traissac, S. pdf  url
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  Title Characterizing the relative spatial structure of point patterns Type Journal Article
  Year 2012 Publication International Journal of Ecology Abbreviated Journal Int. J. Ecol.  
  Volume 2012 Issue Article ID 619281 Pages 11  
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  Abstract We generalize Ripley's K function to get a new function, M, to characterize the spatial structure of a point pattern relatively to another one. We show that this new approach is pertinent in ecology when space is not homogenous and the size of objects matters. We present how to use the function and test the data against the null hypothesis of independence between points. In a tropical tree data set we detect intraspecific aggregation and interspecific competition. © 2012 Eric Marcon et al.  
  Address LET (Université de Lyon, CNRS, ENTPE), Institut des Sciences de l'Homme, 14 avenue Berthelot, 69363 Lyon Cedex 07, France  
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  ISSN 16879708 (Issn) ISBN Medium  
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  Notes Export Date: 7 November 2012; Source: Scopus; Art. No.: 619281; doi: 10.1155/2012/619281; Language of Original Document: English; Correspondence Address: Marcon, E.; AgroParisTech, UMR EcoFoG, BP 709, 97310 Kourou, French Guiana; email: eric.marcon@ecofog.gf Approved no  
  Call Number EcoFoG @ webmaster @ Serial 446  
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Author Basset, Y.; Cizek, L.; Cuénoud, P.; Didham, R.K.; Guilhaumon, F.; Missa, O.; Novotny, V.; Ødegaard, F.; Roslin, T.; Schmidl, J.; Tishechkin, A.K.; Winchester, N.N.; Roubik, D.W.; Aberlenc, H.-P.; Bail, J.; Barrios, H.; Bridle, J.R.; Castaño-Meneses, G.; Corbara, B.; Curletti, G.; Da Rocha, W.D.; De Bakker, D.; Delabie, J.H.C.; Dejean, A.; Fagan, L.L.; Floren, A.; Kitching, R.L.; Medianero, E.; Miller, S.E.; De Oliveira, E.G.; Orivel, J.; Pollet, M.; Rapp, M.; Ribeiro, S.P.; Roisin, Y.; Schmidt, J.B.; Sørensen, L.; Leponce, M. url  openurl
  Title Arthropod diversity in a tropical forest Type Journal Article
  Year 2012 Publication Science Abbreviated Journal  
  Volume 338 Issue 6113 Pages 1481-1484  
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  Abstract Most eukaryotic organisms are arthropods. Yet, their diversity in rich terrestrial ecosystems is still unknown. Here we produce tangible estimates of the total species richness of arthropods in a tropical rainforest. Using a comprehensive range of structured protocols, we sampled the phylogenetic breadth of arthropod taxa from the soil to the forest canopy in the San Lorenzo forest, Panama. We collected 6144 arthropod species from 0.48 hectare and extrapolated total species richness to larger areas on the basis of competing models. The whole 6000-hectare forest reserve most likely sustains 25,000 arthropod species. Notably, just 1 hectare of rainforest yields >60% of the arthropod biodiversity held in the wider landscape. Models based on plant diversity fitted the accumulated species richness of both herbivore and nonherbivore taxa exceptionally well. This lends credence to global estimates of arthropod biodiversity developed from plant models.  
  Address Natural History Museum of Denmark, 2100 Copenhagen, Denmark  
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  Notes Export Date: 27 December 2012; Source: Scopus Approved no  
  Call Number EcoFoG @ webmaster @ Serial 451  
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Author Fanin, N.; Barantal, S.; Fromin, N.; Schimann, H.; Schevin, P.; Hattenschwiler, S. pdf  url
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  Title Distinct Microbial Limitations in Litter and Underlying Soil Revealed by Carbon and Nutrient Fertilization in a Tropical Rainforest Type Journal Article
  Year 2012 Publication PLoS ONE Abbreviated Journal  
  Volume 7 Issue 12 Pages e49990  
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  Abstract Human-caused alterations of the carbon and nutrient cycles are expected to impact tropical ecosystems in the near future. Here we evaluated how a combined change in carbon (C), nitrogen (N) and phosphorus (P) availability affects soil and litter microbial respiration and litter decomposition in an undisturbed Amazonian rainforest in French Guiana. In a fully factorial C (as cellulose), N (as urea), and P (as phosphate) fertilization experiment we analyzed a total of 540 litterbag-soil pairs after a 158-day exposure in the field. Rates of substrate-induced respiration (SIR) measured in litter and litter mass loss were similarly affected by fertilization showing the strongest stimulation when N and P were added simultaneously. The stimulating NP effect on litter SIR increased considerably with increasing initial dissolved organic carbon (DOC) concentrations in litter, suggesting that the combined availability of N, P, and a labile C source has a particularly strong effect on microbial activity. Cellulose fertilization, however, did not further stimulate the NP effect. In contrast to litter SIR and litter mass loss, soil SIR was reduced with N fertilization and showed only a positive effect in response to P fertilization that was further enhanced with additional C fertilization. Our data suggest that increased nutrient enrichment in the studied Amazonian rainforest can considerably change microbial activity and litter decomposition, and that these effects differ between the litter layer and the underlying soil. Any resulting change in relative C and nutrient fluxes between the litter layer and the soil can have important consequences for biogeochemical cycles in tropical forest ecosystems. © 2012 Fanin et al.  
  Address UMR Ecologie des Forêts de Guyane (EcoFoG), Campus Agronomique, Kourou, French Guiana  
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  Notes Export Date: 3 January 2013; Source: Scopus; Art. No.: e49990 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 454  
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Author Barabe, D.; Cuerrier, A.; Quilichini, A. url  openurl
  Title Botanical gardens: Between science and commercialization Type Journal Article
  Year 2012 Publication Natures Sciences Societes Abbreviated Journal  
  Volume 20 Issue 3 Pages 334-342  
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  Abstract Les jardins botaniques: Entre science et commercialisation.  
  Address Enseignante-chercheure en Écologie, CNRS, UMR8172 Icologie des Dorêts de Guyane, 97387 Kourou, France  
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  Notes Export Date: 3 January 2013; Source: Scopus Approved no  
  Call Number EcoFoG @ webmaster @ Serial 455  
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Author Lamarre, G.P.A.; Baraloto, C.; Fortunel, C.; Dávila, N.; Mesones, I.; Rios, J.G.; Ríos, M.; Valderrama, E.; Pilco, M.V.; Fine, P.V.A. doi  openurl
  Title Herbivory, growth rates, and habitat specialization in tropical tree lineages: implications for Amazonian beta-diversity Type Journal Article
  Year 2012 Publication Ecology Abbreviated Journal Ecology  
  Volume 93 Issue sp8 Pages S195-S210  
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  Publisher Ecological Society of America Place of Publication Editor  
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  ISSN 0012-9658 ISBN Medium  
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  Notes doi: 10.1890/11-0397.1 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 459  
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Author Dejean, A.; Orivel, J.; Rossi, V.; Roux, O.; Lauth, J.; Malé, P.-J.G.; Céréghino, R.; Leroy, C. pdf  url
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  Title Predation Success By A Plant-Ant Indirectly Favours The Growth And Fitness Of Its Host Myrmecophyte Type Journal Article
  Year 2013 Publication PLoS ONE Abbreviated Journal  
  Volume 8 Issue 3 Pages e59405  
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  Abstract Mutualisms, or interactions between species that lead to net fitness benefits for each species involved, are stable and ubiquitous in nature mostly due to “byproduct benefits” stemming from the intrinsic traits of one partner that generate an indirect and positive outcome for the other. Here we verify if myrmecotrophy (where plants obtain nutrients from the refuse of their associated ants) can explain the stability of the tripartite association between the myrmecophyte Hirtella physophora, the ant Allomerus decemarticulatus and an Ascomycota fungus. The plant shelters and provides the ants with extrafloral nectar. The ants protect the plant from herbivores and integrate the fungus into the construction of a trap that they use to capture prey; they also provide the fungus and their host plant with nutrients. During a 9-month field study, we over-provisioned experimental ant colonies with insects, enhancing colony fitness (i.e., more winged females were produced). The rate of partial castration of the host plant, previously demonstrated, was not influenced by the experiment. Experimental plants showed higher δ15N values (confirming myrmecotrophy), plus enhanced vegetative growth (e.g., more leaves produced increased the possibility of lodging ants in leaf pouches) and fitness (i.e., more fruits produced and more flowers that matured into fruit). This study highlights the importance of myrmecotrophy on host plant fitness and the stability of ant-myrmecophyte mutualisms. © 2013 Dejean et al.  
  Address IRD, AMAP (botAnique et bioinforMatique de l'Architecture des Plantes; UMR-IRD 123), Montpellier, France  
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  Notes Export Date: 26 March 2013; Source: Scopus; Art. No.: e59405 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 478  
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Author Marcon, E.; Traissac, S.; Lang, G. pdf  url
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  Title A Statistical Test for Ripley’s Function Rejection of Poisson Null Hypothesis Type Journal Article
  Year 2013 Publication ISRN Ecology Abbreviated Journal ISRN Ecology  
  Volume 2013 Issue Article ID 753475 Pages 9  
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  Abstract Ripley’s K function is the classical tool to characterize the spatial structure of point patterns. It is widely used in vegetation studies. Testing its values against a null hypothesis usually relies on Monte-Carlo simulations since little is known about its distribution.
We introduce a statistical test against complete spatial randomness (CSR). The test returns the p-value to reject the null hypothesis of independence between point locations. It is more rigorous and faster than classical Monte-Carlo simulations. We show how to apply it to a tropical forest plot. The necessary R code is provided.
 
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  Call Number EcoFoG @ webmaster @ 852 Serial 479  
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Author Hibert, F.; Taberlet, P.; Chave, J.; Scotti-Saintagne, C.; Sabatier, D.; Richard-Hansen, C. pdf  url
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  Title Unveiling the Diet of Elusive Rainforest Herbivores in Next Generation Sequencing Era? The Tapir as a Case Study Type Journal Article
  Year 2013 Publication PLoS ONE Abbreviated Journal PLoS ONE  
  Volume 8 Issue 4 Pages e60799  
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  Abstract Characterizing the trophic relationships between large herbivores and the outstanding plant diversity in rainforest is a major challenge because of their elusiveness. This is crucial to understand the role of these herbivores in the functioning of the rainforest ecosystems. We tested a non-invasive approach based on the high-throughput sequencing of environmental samples using small plant plastid sequences (the trnL P6 loop) and ribosomal ITS1 primers, referred to as DNA metabarcoding, to investigate the diet of the largest neotropical herbivore, the lowland tapir. Sequencing was performed on plant DNA extracted from tapir faeces collected at the Nouragues station, a protected area of French Guiana. In spite of a limited sampling, our approach reliably provided information about the lowland tapir's diet at this site. Indeed, 95.1% and 74.4% of the plant families and genera identified thanks to the trnL P6 loop, respectively, matched with taxa already known to be consumed by tapirs. With this approach we were able to show that two families and eight new genera are also consumed by the lowland tapir. The taxonomic resolution of this method is limited to the plant family and genera. Complementary barcodes, such as a small portion of ITS1, can be used to efficiently narrow identifications down to the species in some problematic families. We will discuss the remaining limitations of this approach and how useful it is at this stage to unravel the diet of elusive rainforest herbivores and better understand their role as engineers of the ecosystem. © 2013 Hibert et al.  
  Address IRD, UMR AMAP, Montpellier, France  
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  ISSN 19326203 (Issn) ISBN Medium  
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  Notes Export Date: 16 April 2013; Source: Scopus; Art. No.: e60799; :doi 10.1371/journal.pone.0060799; Language of Original Document: English; Correspondence Address: Hibert, F.; Direction Etudes et Recherches, Office National de la Chasse et de la Faune Sauvage, Kourou, French Guiana; email: fabricenz@gmail.com Approved no  
  Call Number EcoFoG @ webmaster @ Serial 481  
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Author Arranz, S.E.; Avarre, J.-C.; Balasundaram, C.; Bouza, C.; Calcaterra, N.B.; Cezilly, F.; Chen, S.-L.; Cipriani, G.; Cruz, V.P.; D'Esposito, D.; Daniel, C.; Dejean, A.; Dharaneedharan, S.; Díaz, J.; Du, M.; Durand, J.-D.; Dziadek, J.; Foresti, F.; Peng-Cheng, F.; Gao, Q.-B.; García, G.; Gauffre-Autelin, P.; Giovino, A.; Goswami, M.; Guarino, C.; Guerra-Varela, J.; Gutiérrez, V.; Harris, D.J.; Heo, M.-S.; Khan, G.; Kim, M.; Lakra, W.S.; Lauth, J.; Leclercq, P.; Lee, J.; Lee, S.-H.; Lee, S.; Lee, T.; Li, Y.-H.; Liu, H.; Liu, S.; Malé, P.-J.G.; Mandhan, R.P.; Martinez, P.; Mayer, V.E.; Mendel, J.; Mendes, N.J.; Mendonça, F.F.; Minias, A.; Minias, P.; Oh, K.-S.; Oliveira, C.; Orivel, J.; Orsini, L.; Pardo, B.G.; Perera, A.; Procaccini, G.; Rato, C.; Ríos, N.; Scibetta, S.; Sharma, B.S.; Sierens, T.; Singh, A.; Terer, T.; Triest, L.; Urbánková, S.; Vera, M.; Villanova, G.V.; Voglmayr, H.; Vyskočilová, M.; Wang, H.; Wang, J.-L.; Wattier, R.A.; Xing, R.; Yadav, K.; Yin, G.; Yuan, Y.; Yun, J.-C.; Zhang, F.-Q.; Zhang, J.-H.; Zhuang, Z. url  openurl
  Title Permanent Genetic Resources added to Molecular Ecology Resources Database 1 December 2012-31 January 2013 Type Journal Article
  Year 2013 Publication Molecular Ecology Resources Abbreviated Journal Mol. Ecol. Resour.  
  Volume 13 Issue 3 Pages 546-549  
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  Abstract This article documents the addition of 268 microsatellite marker loci to the Molecular Ecology Resources Database. Loci were developed for the following species: Alburnoides bipunctatus, Chamaerops humilis, Chlidonias hybrida, Cyperus papyrus, Fusarium graminearum, Loxigilla barbadensis, Macrobrachium rosenbergii, Odontesthes bonariensis, Pelteobagrus vachelli, Posidonia oceanica, Potamotrygon motoro, Rhamdia quelen, Sarotherodon melanotheron heudelotii, Sibiraea angustata, Takifugu rubripes, Tarentola mauritanica, Trimmatostroma sp. and Wallago attu. These loci were cross-tested on the following species: Alburnoides fasciatus, Alburnoides kubanicus, Alburnoides maculatus, Alburnoides ohridanus, Alburnoides prespensis, Alburnoides rossicus, Alburnoides strymonicus, Alburnoides thessalicus, Alburnoides tzanevi, Carassius carassius, Fusarium asiaticum, Leucaspius delineatus, Loxigilla noctis dominica, Pelecus cultratus, Phoenix canariensis, Potamotrygon falkneri, Trachycarpus fortune and Vimba vimba. © 2013 Blackwell Publishing Ltd.  
  Address Key Laboratory of Eco-Environments of Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing, 400715, China  
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  ISSN 1755098x (Issn) ISBN Medium  
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  Notes Export Date: 2 May 2013; Source: Scopus; :doi 10.1111/1755-0998.12095; Language of Original Document: English; Correspondence Address: Arranz, S.E.; Molecular Ecology Resources Editorial Office, 6270 University Blvd, Vancouver, BC, V6T 1Z4, Canada; email: editorial.office@molecol.com Approved no  
  Call Number EcoFoG @ webmaster @ Serial 484  
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