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Author Rutishauser, E.; Wagner, F.; Herault, B.; Nicolini, E.A.; Blanc, L.
Title Contrasting above-ground biomass balance in a Neotropical rain forest Type Journal Article
Year 2010 Publication Journal of Vegetation Science Abbreviated Journal J. Veg. Sci.
Volume 21 Issue 4 Pages (up) 672-682
Keywords Biomass balance; Biomass fluxes; Forest dynamics; Permanent plots; Tropical forests
Abstract Question What are the relative roles of tree growth, mortality and recruitment in variations of above-ground biomass in tropical forests? Location Paracou, French Guiana. Methods We quantified the contribution of growth, recruitment and mortality to total biomass of stands (trees DBH >= 10 cm) in six 6.25-ha permanent plots over 16 yr. Live biomass stocks and fluxes were computed for four separate size classes. Results All plots showed increasing biomass stocks over the study period, with an average value of +0.9 Mg ha-1 yr-1. Plots aggrading biomass were characterized by either minor biomass losses due to mortality or substantial increases in the biomass of large trees (DBH >= 60 cm). Conclusions Within the study period, the rarity of mortality events could not counter-balance the slow permanent increase in biomass, resulting in an apparent increase in biomass. Accounting for such rare events results in no net change in biomass balance.
Address [Rutishauser, Ervan; Nicolini, Eric-Andre] Cirad, UMR AMAP, Kourou 97379, French Guiana, Email: ervan.rutishauser@cirad.fr
Corporate Author Thesis
Publisher WILEY-BLACKWELL PUBLISHING, INC Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1100-9233 ISBN Medium
Area Expedition Conference
Notes ISI:000279450200005 Approved no
Call Number EcoFoG @ eric.marcon @ Serial 52
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Author Male, P.J.G.; Loiseau, A.; Estoup, A.; Quilichini, A.; Orivel, J.
Title Characterization of polymorphic microsatellite loci in the neotropical plant-ant Allomerus decemarticulatus (Formicidae: Myrmicinae) and multiplexing with other microsatellites from the ant subfamily Myrmicinae Type Journal Article
Year 2010 Publication European Journal of Entomology Abbreviated Journal Eur. J. Entomol.
Volume 107 Issue 4 Pages (up) 673-675
Keywords Hymenoptera; Formicidae; Myrmicinae; Allomerus; ant-plant mutualism; microsatellites; plant-ant
Abstract Five polymorphic microsatellite loci of the arboreal ant Allomerus decemarticulatus (Myrmicinae) were isolated and characterized. The amplification and polymorphism of seven additional microsatellite loci, previously developed for the ant species A. octoarticulatus and Wasmannia auropunctata, were also tested and the amplification conditions necessary for genotyping the complete set of 12 multiplexed markers in A. decemarticulatus determined. The number of alleles per locus ranged from three to 15 and observed heterozygosity varied front 0.09 to 0.95. Cross-species amplification of these loci was also successfully achieved in additional species of the same ant subfamily, Myrmicinae. This set of microsatellite markers will be used in studies on the mating system and population genetic structure of Myrmicinae in general and A. decemarticulatus in particular.
Address [Male, Pierre-Jean G.; Orivel, Jerome] Univ Toulouse, Lab Evolut & Divers Biol EDB, UMR 5174, F-31062 Toulouse 9, France, Email: pjmale@cict.fr
Corporate Author Thesis
Publisher CZECH ACAD SCI, INST ENTOMOLOGY Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1210-5759 ISBN Medium
Area Expedition Conference
Notes ISI:000284434300020 Approved no
Call Number EcoFoG @ eric.marcon @ Serial 19
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Author Delabie, J.H.C.; Cereghino, R.; Groc, S.; Dejean, A.; Gibernau, M.; Corbara, B.; Dejean, A.
Title Ants as biological indicators of Wayana Amerindian land use in French Guiana Type Journal Article
Year 2009 Publication Comptes Rendus Biologies Abbreviated Journal C. R. Biol.
Volume 332 Issue 7 Pages (up) 673-684
Keywords Landscape ecology; Traditional land use; Formicidae; Rapid assessment; Pit-fall traps; Self-Organizing Maps
Abstract We examined the ecological impact of traditional land use by Wayana Amerindians in French Guiana using ants as bio-indicators. Ants were sampled through a rapid assessment method and the core results analyzed using Kohonen's self-organizing maps (SOM). Our sample sites included: (1) a Wayana village; (2) a cassava plantation; (3) an abandoned cassava plantation; (4) a forest fragment near the village; (5) a riparian forest; and (6) a primary terra firma forest. The ant diversity decreases according to the decree to which the habitat is disturbed. The SOM allowed us to compare the ecological succession between the six habitats. The protocol used is robust since the same conclusions were drawn using partial data. To cite this article: J.H.C Delabie et al., C R. Biologies 332 (2009). (C) 2009 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
Address [Groc, Sarah; Dejean, Andrea; Dejean, Alain] CNRS, UMR 8172, F-97379 Kourou, France, Email: alain.dejean@wanadoo.fr
Corporate Author Thesis
Publisher ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1631-0691 ISBN Medium
Area Expedition Conference
Notes ISI:000267243700009 Approved no
Call Number EcoFoG @ eric.marcon @ Serial 109
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Author Baraloto, C.; Alverga, P.; Quispe, S.B.; Barnes, G.; Chura, N.B.; da Silva, I.B.; Castro, W.; da Souza, H.; de Souza Moll, I.E.; Del Alcazar Chilo, J.; Linares, H.D.; Quispe, J.G.; Kenji, D.; Marsik, M.; Medeiros, H.; Murphy, S.; Rockwell, C.; Selaya, G.; Shenkin, A.; Silveira, M.; Southworth, J.; Vasquez Colomo, G.H.; Perz, S.
Title Effects of road infrastructure on forest value across a tri-national Amazonian frontier Type Journal Article
Year 2015 Publication Biological Conservation Abbreviated Journal Biological Conservation
Volume 191 Issue Pages (up) 674-681
Keywords Açai; Biodiversity; Brazil nut; Carbon stocks; Connectivity; Infrastructure; Livelihood; Ntfp; Redd; Road impact; Rubber; Timber; Tropical rainforest
Abstract Road construction demonstrably accelerates deforestation rates in tropical forests, but its consequences for forest degradation remain less clear. We estimated a series of forest value metrics including components of biodiversity, carbon stocks, and timber and non-timber forest product resources, along the recently paved Inter-Oceanic Highway (IOH) integrating Brazil and Peru along the Bolivian border. We installed 69 vegetation plots in intact terra firme forests representative of local community holdings near and far from the IOH, and we characterized 15 components of forest value for each plot.We observed strong geographic gradients in forest value components across the region, with increases from west to east in aboveground biomass and in the abundance of timber and non-timber forest product trees and regeneration. Plots in communities in Pando, Bolivia, where the IOH remains in part unpaved, had the highest aboveground biomass, standing timber volumes and Brazil nut tree density. In contrast, communities in Madre de Dios, Peru, where settlements and unpaved portions of the IOH have existed for decades, and in Acre, Brazil, where paving of the IOH has been underway for more than a decade, were more degraded. Seven of the fifteen forest value components we measured increased with increasing distance from the IOH, although the magnitude of these effects was weak. Landscape scale remote sensing analyses showed much stronger effects of road proximity on deforestation. We suggest that remote sensing techniques including canopy spectral signatures might be calibrated to characterize multiple components of forest value, so that we can estimate landscape scale impacts of infrastructure developments on both deforestation and forest degradation in tropical regions. © 2015 Elsevier B.V.
Address International Center for Tropical Botany, Department of Earth and Environment, Florida International University, Miami, FL, United States
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 ISBN Medium
Area Expedition Conference
Notes Export Date: 8 September 2015 Approved no
Call Number EcoFoG @ webmaster @ Serial 619
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Author Scotti-Saintagne, C.; Dick, C.W.; Caron, H.; Vendramin, G.G.; Guichoux, E.; Buonamici, A.; Duret, C.; Sire, P.; Valencia, R.; Lemes, M.R.; Gribel, R.; Scotti, I.
Title Phylogeography of a species complex of lowland Neotropical rain forest trees (Carapa, Meliaceae) Type Journal Article
Year 2013 Publication Journal of Biogeography Abbreviated Journal
Volume 40 Issue 4 Pages (up) 676-692
Keywords Amazonia; Carapa; Historical biogeography; Mahogany family; Molecular markers; Neogene diversification; Phylogeography; Quaternary diversification; Species complexes
Abstract Aim Many tropical tree species have poorly delimited taxonomic boundaries and contain undescribed or cryptic species. We examined the genetic structure of a species complex in the tree genus Carapa in the Neotropics in order to evaluate age, geographic patterns of diversity and evolutionary relationships, and to quantify levels of introgression among currently recognized species. Location Lowland moist forests in the Guiana Shield, the Central and Western Amazon Basin, Chocó and Central America. Methods Genetic structure was analysed using seven nuclear simple sequence repeats (nuSSR), five chloroplast SSRs (cpSSR), and two chloroplast DNA (cpDNA) intergenic sequences (trnH-psbA and trnC-ycf6). Bayesian clustering analysis of the SSR data was used to infer population genetic structure and to assign 324 samples to their most likely genetic cluster. Bayesian coalescence analyses were performed on the two cpDNA markers to estimate evolutionary relationships and divergence times. Results Two genetic clusters (nuguianensis and nusurinamensis) were detected, which correspond to the Neotropical species C. guianensis (sensu latu) and C. surinamensis. Fourteen cpDNA haplotypes clustered into six haplogroups distributed between the two nuclear genetic clusters. Divergence between the haplogroups was initiated in the Miocene, with some haplotype structure evolving as recently as the Pleistocene. The absence of complete lineage sorting between the nuclear and chloroplast genomes and the presence of hybrid individuals suggest that interspecific reproductive barriers are incomplete. NuSSR diversity was highest in C. guianensis and, within C. guianensis, cpDNA diversity was highest in the Central and Western Amazon Basin. Regional genetic differentiation was strong but did not conform to an isolation-by-distance process or exhibit a phylogeographical signal. Main conclusions The biogeographical history of Neotropical Carapa appears to have been influenced by events that took place during the Neogene. Our results point to an Amazonian centre of origin and diversification of Neotropical Carapa, with subsequent migration to the Pacific coast of South America and Central America. Gene flow apparently occurs among species, and introgression events are supported by inconsistencies between chloroplast and nuclear lineage sorting. The absence of phylogeographical structure may be a result of the ineffectiveness of geographical barriers among populations and of reproductive isolation mechanisms among incipient and cryptic species in this species complex. © 2012 Blackwell Publishing Ltd.
Address Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão 915, Jardim Botânico, 22460-030, Rio de Janeiro, RJ, Brazil
Corporate Author Thesis
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Notes Export Date: 26 March 2013; Source: Scopus Approved no
Call Number EcoFoG @ webmaster @ Serial 477
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Author Vendramin, G.G.; Fady, B.; Gonzalez-Martinez, S.C.; Hu, F.S.; Scotti, I.; Sebastiani, F.; Soto, A.; Petit, R.J.
Title Genetically depauperate but widespread: The case of an emblematic mediterranean pine Type Journal Article
Year 2008 Publication Evolution Abbreviated Journal Evolution
Volume 62 Issue 3 Pages (up) 680-688
Keywords chloroplast microsatellites; conservation genetics; diversity depletion; human impact; Pinus pinea
Abstract Genetic variation is generally considered a prerequisite for adaptation to new environmental conditions. Thus the discovery of genetically depauperate but geographically widespread species is unexpected. We used 12 paternally inherited chloroplast microsatellites to estimate population genetic variation across the full range of an emblematic circum-Mediterranean conifer, stone pine (Pinus pinea L.). The same chloroplast DNA haplotype is fixed in nearly all of the 34 investigated populations. Such a low level of variation is consistent with a previous report of very low levels of diversity at nuclear loci in this species. Stone pine appears to have passed through a severe and prolonged demographic bottleneck, followed by subsequent natural- and human-mediated dispersal across the Mediterranean Basin. No other abundant and widespread plant species has as little genetic diversity as P. pinea at both chloroplast and nuclear markers. However, the species harbors a nonnegligible amount of variation at adaptive traits. Thus a causal relationship between genetic diversity, as measured by marker loci, and the evolutionary precariousness of a species, cannot be taken for granted.
Address [Vendramin, Giovanni G.] Ist Genet Vegetale, Sez Firenze, Florence, Italy, Email: petit@pierroton.inra.fr
Corporate Author Thesis
Publisher BLACKWELL PUBLISHING Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0014-3820 ISBN Medium
Area Expedition Conference
Notes ISI:000253758600016 Approved no
Call Number EcoFoG @ eric.marcon @ Serial 141
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Author McLean, J.P.; Zhang, T.; Bardet, S.; Beauchene, J.; Thibaut, A.; Clair, B.; Thibaut, B.
Title The decreasing radial wood stiffness pattern of some tropical trees growing in the primary forest is reversed and increases when they are grown in a plantation Type Journal Article
Year 2011 Publication Annals of Forest Science Abbreviated Journal Ann. For. Sci.
Volume 68 Issue 4 Pages (up) 681-688
Keywords Tropical trees; Growth strategy; Wood stiffness; Juvenile wood
Abstract Background This study examines the radial trend in wood stiffness of tropical rainforest trees. The objective was to determine if the type of growing environment (exposed plantation or dense primary forest) would have an effect on this radial trend. Methods The axial elastic modulus of wood samples, representing a pith to bark cross-section, of six trees from several French Guianese species (two of Eperua falcata, one of Eperua grandiflora, two of Carapa procera and one of Symphonia gloubulifera) was measured using a dynamic “forced vibration” method. Results Primary forest trees were observed to have a decrease in wood stiffness from pith to bark, whereas plantation trees, from the same genus or species, displayed a corresponding increase in wood stiffness. Juvenile wood stiffness appears to vary depending on the environment in which the tree had grown. Conclusion We suggest that the growth strategy of primary forest trees is to produce wood resistant to self-buckling so that the height of the canopy may be obtained with the maximum of efficiency. In contrast, the growth strategy of the trees growing in an exposed plantation is to produce low-stiffness wood, important to provide flexibility in wind. Further experiments to study the behaviour of more species, with more individuals per species, growing across a range of physical environments, are required.
Address [McLean, JP; Bardet, S; Clair, B; Thibaut, B] Univ Montpellier 2, LMGC, CNRS, F-34095 Montpellier, France, Email: p.mclean@auckland.ac.nz
Corporate Author Thesis
Publisher Springer France Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1286-4560 ISBN Medium
Area Expedition Conference
Notes WOS:000292553400003 Approved no
Call Number EcoFoG @ webmaster @ Serial 326
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Author Biwolé, A.B.; Dainou, K.; Fayolle, A.; Hardy, O.J.; Brostaux, Y.; Coste, S.; Delion, S.; Betti, J.L.; Doucet, J.-L.
Title Light Response of Seedlings of a Central African Timber Tree Species, Lophira alata (Ochnaceae), and the Definition of Light Requirements Type Journal Article
Year 2015 Publication Biotropica Abbreviated Journal Biotropica
Volume 47 Issue 6 Pages (up) 681-688
Keywords biomass allocation; Central Africa; light requirement: Lophira alata; population; relative growth rate; seedling growth; timber species; Afrique centrale; allocation de biomasse; besoins en lumière; croissance des semis; bois d'œuvre; Lophira alata; population; taux de croissance relatif
Abstract Light is of primary importance in structuring tropical tree communities. Light exposure at seedling and adult stages has been used to characterize the ecological profile of tropical trees, with many implications in forest management and restoration ecology. Most shade-tolerance classification systems have been proposed based on empirical observations in a specific area and thus result in contradictions among categories assigned to a given species. In this study, we aimed to quantify the light requirements for seedling growth of a Central African timber tree, Lophira alata (Ochnaceae), taking into account effects of population origin. In two controlled experiments: a light response experiment and a comparative population experiment, conducted in southwestern Cameroon, using seeds collected from four populations (three from Cameroon and one from Gabon), we examined the quantitative responses to irradiance of seedlings. After 2 years, mortality was very low (<3%), even in extremely low irradiance. Growth and biomass allocation patterns varied in response to light, with intermediate irradiance (24–43%) providing optimal conditions. Light response differed between populations. The Boumba population in the northeastern edge of the species' distribution exhibited the highest light requirements, suggesting a local adaptation. As a result of positive growth at low irradiance and maximum growth at intermediate irradiance, we concluded that L. alata exhibits characteristics of both non-pioneer and pioneer species. Implications of our results to propose an objective way to assign the light requirement for tropical tree species are discussed.
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 1744-7429 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number EcoFoG @ webmaster @ Serial 648
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Author Lebrini, M.; Robert, F.; Lecante, A.; Roos, C.
Title Corrosion inhibition of C38 steel in 1 M hydrochloric acid medium by alkaloids extract from Oxandra asbeckii plant Type Journal Article
Year 2011 Publication Corrosion Science Abbreviated Journal Corrosion Sci.
Volume 53 Issue 2 Pages (up) 687-695
Keywords Steel; EIS; Polarization; Raman spectroscopy; Acid inhibition
Abstract The inhibition effect of alkaloids extract from Oxandra asbeckii plant (OAPE) on the corrosion of C38 steel in 1 M hydrochloric acid solution has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The corrosion inhibition efficiency increases on increasing plant extracts concentration. Cathodic and anodic polarization curves show that OAPE is a mixed-type inhibitor. The effect of temperature on the corrosion behavior of C38 steel in 1 M HCl with and without addition of plant extract was studied in the temperature range 25-55 degrees C. The thermodynamic functions of dissolution and adsorption processes were calculated from experimental polarization data and the interpretation of the results are given. The adsorption of this plant extract on the C38 steel surface obeys the Langmuir adsorption isotherm. Surface analysis (Raman) was also carried out to establish the corrosion inhibitive property of this plant extract in HCl solution. (C) 2010 Elsevier Ltd. All rights reserved.
Address [Robert, F.; Lecante, A.; Roos, C.] UAG UMR ECOFOG, Lab Mat & Mol Milieu Amazonien, Cayenne 97337, French Guiana, Email: christophe.roos@guyane.univ-ag.fr
Corporate Author Thesis
Publisher Pergamon-Elsevier Science Ltd Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0010-938x ISBN Medium
Area Expedition Conference
Notes ISI:000287004700021 Approved no
Call Number EcoFoG @ webmaster @ Serial 299
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Author Delabie, J.H.C.; Groc, S.; Dejean, A.
Title The tramp ant technomyrmex vitiensis (Hymenoptera: Formicidae: Dolichoderinae) on South America Type Journal Article
Year 2011 Publication Florida Entomologist Abbreviated Journal Fla. Entomol.
Volume 94 Issue 3 Pages (up) 688-689
Keywords
Abstract Technomyrmex vitiensis is a tramp ant that has spread through many parts of the Old World tropics via human commerce. This species has been previously reported only once in the New World, from San Francisco, California. Here, we report the first records of T. vitiensis in South America, from two sites deep in the forest of French Guiana. It is not clear how these ants were transported to such remote sites, 100 km inland. Copyright © 2011 BioOne All rights reserved.
Address Université de Toulouse, UPS, 118 route de Narbonne, F-31062 Toulouse, France
Corporate Author Thesis
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ISSN 00154040 (Issn) ISBN Medium
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Notes Export Date: 26 October 2011; Source: Scopus; Coden: Fetma; doi: 10.1653/024.094.0335; Language of Original Document: English; Correspondence Address: Delabie, J.H.C.; Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, Km 16, 45650-000 Ilhéus, Bahia, Brazil Approved no
Call Number EcoFoG @ webmaster @ Serial 364
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