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Author Honorio Coronado, E.N.; Dexter, K.G.; Pennington, R.T.; Chave, J.; Lewis, S.L.; Alexiades, M.N.; Alvarez, E.; Alves de Oliveira, A.; Amaral, I.L.; Araujo-Murakami, A.; Arets, E.J.M.M.; Aymard, G.A.; Baraloto, C.; Bonal, D.; Brienen, R.; Cerón, C.; Cornejo Valverde, F.; Di Fiore, A.; Farfan-Rios, W.; Feldpausch, T.R.; Higuchi, N.; Huamantupa-Chuquimaco, I.; Laurance, S.G.; Laurance, W.F.; López-Gonzalez, G.; Marimon, B.S.; Marimon-Junior, B.H.; Monteagudo Mendoza, A.; Neill, D.; Palacios Cuenca, W.; Peñuela Mora, M.C.; Pitman, N.C.A.; Prieto, A.; Quesada, C.A.; Ramirez Angulo, H.; Rudas, A.; Ruschel, A.R.; Salinas Revilla, N.; Salomão, R.P.; Segalin de Andrade, A.; Silman, M.R.; Spironello, W.; ter Steege, H.; Terborgh, J.; Toledo, M.; Valenzuela Gamarra, L.; Vieira, I.C.G.; Vilanova Torre, E.; Vos, V.; Phillips, O.L.
Title Phylogenetic diversity of Amazonian tree communities Type Journal Article
Year 2015 Publication Diversity and Distributions Abbreviated Journal Diversity and Distributions
Volume 21 Issue 11 Pages 1295-1307
Keywords Amazon basin; Eudicots; Magnoliids; Monocots; Phylogenetic diversity; Species richness
Abstract Aim: To examine variation in the phylogenetic diversity (PD) of tree communities across geographical and environmental gradients in Amazonia. Location: Two hundred and eighty-three c. 1 ha forest inventory plots from across Amazonia. Methods: We evaluated PD as the total phylogenetic branch length across species in each plot (PDss), the mean pairwise phylogenetic distance between species (MPD), the mean nearest taxon distance (MNTD) and their equivalents standardized for species richness (ses.PDss, ses.MPD, ses.MNTD). We compared PD of tree communities growing (1) on substrates of varying geological age; and (2) in environments with varying ecophysiological barriers to growth and survival. Results: PDss is strongly positively correlated with species richness (SR), whereas MNTD has a negative correlation. Communities on geologically young- and intermediate-aged substrates (western and central Amazonia respectively) have the highest SR, and therefore the highest PDss and the lowest MNTD. We find that the youngest and oldest substrates (the latter on the Brazilian and Guiana Shields) have the highest ses.PDss and ses.MNTD. MPD and ses.MPD are strongly correlated with how evenly taxa are distributed among the three principal angiosperm clades and are both highest in western Amazonia. Meanwhile, seasonally dry tropical forest (SDTF) and forests on white sands have low PD, as evaluated by any metric. Main conclusions: High ses.PDss and ses.MNTD reflect greater lineage diversity in communities. We suggest that high ses.PDss and ses.MNTD in western Amazonia results from its favourable, easy-to-colonize environment, whereas high values in the Brazilian and Guianan Shields may be due to accumulation of lineages over a longer period of time. White-sand forests and SDTF are dominated by close relatives from fewer lineages, perhaps reflecting ecophysiological barriers that are difficult to surmount evolutionarily. Because MPD and ses.MPD do not reflect lineage diversity per se, we suggest that PDss, ses.PDss and ses.MNTD may be the most useful diversity metrics for setting large-scale conservation priorities. © 2015 John Wiley & Sons Ltd.
Address Universidad Autónoma del Beni, Av. Ejército Nacional, Riberalta, Riberalta, Bolivia
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Notes (up) Export Date: 22 October 2015 Approved no
Call Number EcoFoG @ webmaster @ Serial 634
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Author Marcon, E.; Traissac, S.; Puech, F.; Lang, G.
Title Tools to characterize point patterns: dbmss for R Type Journal Article
Year 2015 Publication Journal of Statistical Software Abbreviated Journal Journal of Statistical Software
Volume 67 Issue Codesnippet3 Pages 1-15
Keywords Point patterns; R; Spatial structure
Abstract The dbmss package for R provides an easy-to-use toolbox to characterize the spatial structure of point patterns. Our contribution presents the state of the art of distance-based methods employed in economic geography and which are also used in ecology. Topographic functions such as Ripley’s K, absolute functions such as Duranton and Overman’s Kd and relative functions such as Marcon and Puech’s M are implemented. Their confidence envelopes (including global ones) and tests against counterfactuals are included in the package. © 2015, American Statistical Association. All rights reserved.
Address AgroParisTech, INRA, UMR 518 Math. Info. Appli., 16 rue Claude Bernard, Paris, France
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Notes (up) Export Date: 22 October 2015 Approved no
Call Number EcoFoG @ webmaster @ Serial 635
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Author Talaga, S.; Dejean, A.; Carinci, R.; Gaborit, P.; Dusfour, I.; Girod, R.
Title Updated Checklist of the Mosquitoes (Diptera: Culicidae) of French Guiana Type Journal Article
Year 2015 Publication Journal of Medical Entomology Abbreviated Journal Journal of Medical Entomology
Volume 52 Issue 5 Pages 770-782
Keywords culicid; Neotropics; South America; species checklist; vector
Abstract The incredible mosquito species diversity in the Neotropics can provoke major confusion during vector control programs when precise identification is needed. This is especially true in French Guiana where studies on mosquito diversity practically ceased 35 yr ago. In order to fill this gap, we propose here an updated and comprehensive checklist of the mosquitoes of French Guiana, reflecting the latest changes in classification and geographical distribution and the recognition of current or erroneous synonymies. This work was undertaken in order to help ongoing and future research on mosquitoes in a broad range of disciplines such as ecology, biogeography, and medical entomology. Thirty-two valid species cited in older lists have been removed, and 24 species have been added including 12 species (comprising two new genera and three new subgenera) reported from French Guiana for the first time. New records are from collections conducted on various phytotelmata in French Guiana and include the following species: Onirion sp. cf Harbach and Peyton (2000), Sabethes (Peytonulus) hadrognathus Harbach, Sabethes (Peytonulus) paradoxus Harbach, Sabethes (Peytonulus) soperi Lane and Cerqueira, Sabethes (Sabethinus) idiogenes Harbach, Sabethes (Sabethes) quasicyaneus Peryassú , Runchomyia (Ctenogoeldia) magna (Theobald), Wyeomyia (Caenomyiella) sp. cf Harbach and Peyton (1990), Wyeomyia (Dendromyia) ypsipola Dyar, Wyeomyia (Hystatomyia) lamellata (Bonne-Wepster and Bonne), Wyeomyia (Miamyia) oblita (Lutz), and Toxorhynchites (Lynchiella) guadeloupensis (Dyar and Knab). At this time, the mosquitoes of French Guiana are represented by 235 species distributed across 22 genera, nine tribes, and two subfamilies.
Address UnitÉ d'Entomologie Médicale, Institut Pasteur de la Guyane, 23 Avenue Pasteur, Cayenne Cedex, France
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Notes (up) Export Date: 22 October 2015 Approved no
Call Number EcoFoG @ webmaster @ Serial 636
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Author Dézerald, O.; Srivastava, D.S.; Céréghino, R.; Carrias, J.-F.; Corbara, B.; Farjalla, V.F.; Leroy, C.; Marino, N.A.C.; Piccoli, G.C.O.; Richardson, B.A.; Richardson, M.J.; Romero, G.Q.; González, A.L.
Title Functional traits and environmental conditions predict community isotopic niches and energy pathways across spatial scales Type Journal Article
Year 2018 Publication Functional Ecology Abbreviated Journal
Volume 32 Issue 10 Pages 2423-2434
Keywords energy pathways; environmental heterogeneity; food webs; functional biogeography; functional diversity; isotopic niche; metacommunity; trophic structure
Abstract Despite ongoing research in food web ecology and functional biogeography, the links between food web structure, functional traits and environmental conditions across spatial scales remain poorly understood. Trophic niches, defined as the amount of energy and elemental space occupied by species and food webs, may help bridge this divide. Here, we ask how the functional traits of species, the environmental conditions of habitats and the spatial scale of analysis jointly determine the characteristics of trophic niches. We used isotopic niches as a proxy of trophic niches, and conducted analyses at spatial scales ranging from local food webs and metacommunities to geographically distant sites. We sampled aquatic macroinvertebrates from 104 tank bromeliads distributed across five sites from Central to South America and compiled the macroinvertebrates’ functional traits and stable isotope values (δ15N and δ13C). We assessed how isotopic niches within each bromeliad were influenced by the functional trait composition of their associated invertebrates and environmental conditions (i.e., habitat size, canopy cover [CC] and detrital concentration [DC]). We then evaluated whether the diet of dominant predators and, consequently, energy pathways within food webs reflected functional and environmental changes among bromeliads across sites. At last, we determined the extent to which the isotopic niches of macroinvertebrates within each bromeliad contributed to the metacommunity isotopic niches within each site and compared these metacommunity-level niches over biogeographic scales. At the bromeliad level, isotopic niches increased with the functional richness of species in the food web and the DC in the bromeliad. The diet of top predators tracked shifts in prey biomass along gradients of CC and DC. Bromeliads that grew under heterogeneous CC displayed less trophic redundancy and therefore combined to form larger metacommunity isotopic niches. At last, the size of metacommunity niches depended on within-site heterogeneity in CC. Our results suggest that the trophic niches occupied by food webs can predictably scale from local food webs to metacommunities to biogeographic regions. This scaling process is determined by both the functional traits of species and heterogeneity in environmental conditions. A plain language summary is available for this article. © 2018 The Authors. Functional Ecology © 2018 British Ecological Society
Address Luquillo LTER, Institute for Tropical Ecosystem Studies, College of Natural Sciences, University of Puerto Rico at Rio Piedras, San Juan, Puerto Rico
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Notes (up) Export Date: 22 October 2018 Approved no
Call Number EcoFoG @ webmaster @ Serial 828
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Author Céréghino, R.; Pillar, V.D.; Srivastava, D.S.; de Omena, P.M.; MacDonald, A.A.M.; Barberis, I.M.; Corbara, B.; Guzman, L.M.; Leroy, C.; Ospina Bautista, F.; Romero, G.Q.; Trzcinski, M.K.; Kratina, P.; Debastiani, V.J.; Gonçalves, A.Z.; Marino, N.A.C.; Farjalla, V.F.; Richardson, B.A.; Richardson, M.J.; Dézerald, O.; Gilbert, B.; Petermann, J.; Talaga, S.; Piccoli, G.C.O.; Jocqué, M.; Montero, G.
Title Constraints on the functional trait space of aquatic invertebrates in bromeliads Type Journal Article
Year 2018 Publication Functional Ecology Abbreviated Journal
Volume 32 Issue 10 Pages 2435-2447
Keywords aquatic invertebrates; ecological strategies; functional diversity; functional trait space; niche hypervolume
Abstract Functional traits are commonly used in predictive models that link environmental drivers and community structure to ecosystem functioning. A prerequisite is to identify robust sets of continuous axes of trait variation, and to understand the ecological and evolutionary constraints that result in the functional trait space occupied by interacting species. Despite their diversity and role in ecosystem functioning, little is known of the constraints on the functional trait space of invertebrate biotas of entire biogeographic regions. We examined the ecological strategies and constraints underlying the realized trait space of aquatic invertebrates, using data on 12 functional traits of 852 taxa collected in tank bromeliads from Mexico to Argentina. Principal Component Analysis was used to reduce trait dimensionality to significant axes of trait variation, and the proportion of potential trait space that is actually occupied by all taxa was compared to null model expectations. Permutational Analyses of Variance were used to test whether trait combinations were clade-dependent. The major axes of trait variation represented life-history strategies optimizing resource use and antipredator adaptations. There was evidence for trophic, habitat, defence and life-history niche axes. Bromeliad invertebrates only occupied 16%–23% of the potential space within these dimensions, due to greater concentrations than predicted under uniform or normal distributions. Thus, despite high taxonomic diversity, invertebrates only utilized a small number of successful ecological strategies. Empty areas in trait space represented gaps between major phyla that arose from biological innovations, and trait combinations that are unviable in the bromeliad ecosystem. Only a few phylogenetically distant genera were neighbouring in trait space. Trait combinations aggregated taxa by family and then by order, suggesting that niche conservatism was a widespread mechanism in the diversification of ecological strategies. A plain language summary is available for this article. © 2018 The Authors. Functional Ecology © 2018 British Ecological Society
Address Facultad de Ciencias Agrarias, Universidad Nacional de Rosario, Zavalla, Argentina
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Notes (up) Export Date: 22 October 2018 Approved no
Call Number EcoFoG @ webmaster @ Serial 829
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Author Pétillon, J.; Leroy, B.; Djoudi, E.A.; Vedel, V.
Title Small and large spatial scale coexistence of ctenid spiders in a neotropical forest (French Guiana) Type Journal Article
Year 2018 Publication Tropical Zoology Abbreviated Journal
Volume 31 Issue 2 Pages 85-98
Keywords Araneae; flooding; Guianese shield; inselberg; juveniles
Abstract While spiders constitute the most abundant and diverse arthropods in many habitats, they remained under-studied, especially in tropical rainforests. The goal of this study is to assess the spatial distribution of the spider family Ctenidae by assessing associations of species diversity and population traits among different habitat conditions. Fieldwork was carried out during 2013 in habitats varying in flooding frequency (plateau vs. flooded forest) and elevation (inselberg vs. lowland) in the Nouragues National Natural Reserve, French Guiana. Assemblage composition, population structure, and trait measurements of one dominant species were assessed using hand collection in replicated quadrats. We found strong effects on ctenid assemblages attributable to both elevation and flooding, with changes in relative abundance of species among habitats, but few correlated densities between species. At the population level, main differences in species distribution between and within habitats were detected only when juveniles were taken into account. No effect of elevation was found on the measurements of traits of the dominant species, but legs were proportionally shorter in flooded habitats, suggesting reduced active dispersal in these habitats. Our study highlights the value of complementary of measures of diversity and traits at different biological scales in Ctenidae.
Address UMR CNRS 8175 Ecologie des Forêts de Guyane, Université Antilles-Guyane, Kourou Cedex, Guyane Française, France
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Notes (up) Export Date: 23 April 2018 Approved no
Call Number EcoFoG @ webmaster @ Serial 800
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Author Hénaut, Y.; Corbara, B.; Pélozuelo, L.; Azémar, F.; Céréghino, R.; Herault, B.; Dejean, A.
Title A tank bromeliad favors spider presence in a neotropical inundated forest Type Journal Article
Year 2014 Publication PLoS ONE Abbreviated Journal PLoS ONE
Volume 9 Issue 12 Pages e114592
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Abstract Tank bromeliads are good models for understanding how climate change may affect biotic associations. We studied the relationships between spiders, the epiphytic tank bromeliad, Aechmea bracteata, and its associated ants in an inundated forest in Quintana Roo, Mexico, during a drought period while, exceptionally, this forest was dry and then during the flooding that followed. We compared spider abundance and diversity between “Aechmea-areas” and “control areas” of the same surface area. We recorded six spider families: the Dipluridae, Ctenidae, Salticidae, Araneidae, Tetragnathidae and Linyphiidae among which the funnel-web tarantula, Ischnothele caudata, the only Dipluridae noted, was the most abundant. During the drought period, the spiders were more numerous in the Aechmea areas than in the control areas, but they were not obligatorily associated with the Aechmea.
During the subsequent flooding, the spiders were concentrated in the A. bracteata patches, particularly those sheltering an ant colony. Also, a kind of specificity existed between certain spider taxa and ant species, but varied between the drought period and subsequent flooding. We conclude that climatic events modulate the relationship between A. bracteata patches and their associated fauna. Tank bromeliads, previously considered only for their ecological importance in supplying food and water during drought, may also be considered refuges for spiders during flooding. More generally, tank bromeliads have an important role in preserving non-specialized fauna in inundated forests.
Address Ecologie des Forêts de Guyane, Campus AgronomiqueKourou, France
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Notes (up) Export Date: 23 December 2014 Approved no
Call Number EcoFoG @ webmaster @ Serial 573
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Author Basset, C.; Rodrigues, A.M.S.; Eparvier, V.; Silva, M.R.R.; Lopes, N.P.; Sabatier, D.; Fonty, E.; Espindola, L.S.; Stien, D.
Title Secondary metabolites from Spirotropis longifolia (DC) Baill and their antifungal activity against human pathogenic fungi Type Journal Article
Year 2012 Publication Phytochemistry Abbreviated Journal Phytochemistry
Volume 74 Issue Pages 166-172
Keywords Antifungal; Cytotoxic; Leguminosae; Monodominant species; Prenylated pterocarpans; Spirotropis longifolia
Abstract A phytochemical study of the ethyl acetate extract of the roots and adventitious roots of Spirotropis longifolia, a monodominant tree species of the Guianan rainforest, has allowed the isolation of three compounds: 2-hydroxy-8,9-methylenedioxy-2′,2′-dimethylpyrano-[5′, 6′:4,3]-6a-prenyl-[6aS,11aS]-pterocarpan (spirotropin A), 2-hydroxy-8,9-methylenedioxy-2′,2′-dimethyl-3′, 4′-dihydropyrano-[5′,6′:4,3]-6a-prenyl-[6aS,11aS]-pterocarpan (spirotropin B), and 5,7-dihydroxy-6,8-diprenyl-2,2-dimethylpyrano[5,6: 3′,4′]-isoflavone (spirotropone). In addition, 10 known compounds, trans-oxyresveratrol, trans-resveratrol, piceatannol, daidzein, genistein, isoprunetin, lupeol, latifolol, gnetin D and gnetin E, were also isolated. These compounds were evaluated for their antifungal activity and their cytotoxicity, and their structures were established by 1D and 2D NMR, HRMS, CD and optical rotation measurements. © 2011 Elsevier Ltd. All rights reserved.
Address CNRS, Institut de Chimie des Substances Naturelles, 1 avenue de la Terrasse, 91198 Gif-sur-Yvette cedex, France
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Notes (up) Export Date: 23 February 2012; Source: Scopus; Coden: Pytca; doi: 10.1016/j.phytochem.2011.10.011; Language of Original Document: English; Correspondence Address: Espindola, L.S.; Laboratório de Farmacognosia, Universidade de Brasília, Brasília, DF, Brazil; email: darvenne@unb.br Approved no
Call Number EcoFoG @ webmaster @ Serial 381
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Author Duval, R.; Duplais, C.
Title Fluorescent natural products as probes and tracers in biology Type Journal Article
Year 2017 Publication Natural Product Reports Abbreviated Journal Natural Product Reports
Volume 34 Issue 2 Pages 161-193
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Abstract Covering: 1985 up to the end of 2016 Fluorescence is a remarkable property of many natural products in addition to their medicinal and biological values. Herein, we provide a review on these peculiar secondary metabolites to stimulate prospecting of them as original fluorescent tracers, endowed with unique photophysical properties and with applications in most fields of biology. The compounds are spectrally categorized (i.e. fluorescing from violet to the near infra-red) and further structurally classified within each category. Natural products selected for their high impact in modern fluorescence-based biological studies are highlighted throughout the article. Finally, we discuss aspects of chemical ecology where fluorescent natural products might have key evolutionary roles and thus open new research directions in the field. © 2017 The Royal Society of Chemistry.
Address CNRS, UMR 8172 EcoFoG (Ecologie des Forêts de Guyane), AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 23 avenue Pasteur, Cayenne, France
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Notes (up) Export Date: 23 February 2017 Approved no
Call Number EcoFoG @ webmaster @ Serial 736
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Author Gourlet-Fleury, S.; Gazull, L.; Bigombe Logo, P.; Billand, A.; Bolaluembe, P.-C.; Boyemba, F.; Dessard, H.; Doucet, J.-L.; Doumenge, C.; Dubiez, E.; Durrieu De Madron, L.; Feintrenie, L.; Fomete, T.; Garcia, C.; Gillet, J.-F.; Herault, B.; Karsenty, A.; Menga, P.; Ngoya Kessy, A.M.; Pietsch, S.; Putz, J.; Rossi, V.; Sayer, J.; Sist, P.; Zongang Ngongang, A.A.
Title Are logging concessions a threat to the peatlands in DRC? Type Journal Article
Year 2017 Publication Bois et Forets des Tropiques Abbreviated Journal
Volume Issue 334 Pages 3-6
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Address Université du Maine, France
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Notes (up) Export Date: 23 January 2018 Approved no
Call Number EcoFoG @ webmaster @ Serial 788
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