| Records |
| Author |
Guitet, S.; Blanc, L.; Trombe, P.J.; Lehallier, B. |
Title  |
Silvicultural Treatments in the Tropical Forests of Guiana: A Review of Ten Years of Trials |
Type |
Journal Article |
| Year |
2009 |
Publication |
Bois et Forets des Tropiques |
Abbreviated Journal |
Bois For. Trop. |
| Volume |
63 |
Issue |
301 |
Pages |
7-19 |
| Keywords |
cutting cycle; thinning; stand dynamics; logging; French Guiana |
| Abstract |
This article reviews an experimental system set up in French Guiana to test different selective thinning methods that started ten to fifteen years after logging in order to reconstitute commercially viable stands within the shortest time. The thinning methods tested involve a combination of selective intervention within a radius of 10 metres around crop trees and systematic intervention applied uniformly to the entire forest parcel. The resulting thinning intensity produces an 8% to 45% reduction in basal area. While the growth of the residual stand is strongly boosted in all species and for all diameters, there is little change in basal area because of high mortality and lower recruitment of commercial species. Standing commercial capital, however, is strongly affected by the thinning operations as defined. In effect, these thinning methods that benefit crop stems do not meet the objective of shorter rotations in Guiana's tropical logging forests. On the other hand, the measurements made in under-treatment stands agree with those obtained at the Paracou experimental station and confirm the need to adopt long cutting cycles of more than fifty years to ensure that the extraction of valuable species is sustainable in the current logging context in French Guiana. |
| Address |
[Guitet, Stephane; Trombe, Pierre-Julien; Lehallier, Benoit] Direct Reg Guyane, Off Natl Forets, F-97307 Cayenne, France |
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CIRAD-CENTRE COOPERATION INT RECHERCHE AGRONOMIQUE POUR |
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0006-579X |
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ISI:000272488700002 |
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no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
91 |
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| Author |
Sist, P.; Brown, N. |
| Title |
Silvicultural intensification for tropical forest conservation: a response to Fredericksen and Putz |
Type |
Journal Article |
| Year |
2004 |
Publication |
Biodiversity and Conservation |
Abbreviated Journal |
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| Volume |
13 |
Issue |
12 |
Pages |
2381-2385 |
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| ISSN |
0960-3115 |
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| Notes |
WOS:000225691300011 |
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no |
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EcoFoG @ webmaster @ |
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308 |
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| Author |
Devault, D.A.; Beilvert, B.; Winterton, P. |
| Title |
Ship breaking or scuttling? A review of environmental, economic and forensic issues for decision support |
Type |
Journal Article |
| Year |
2017 |
Publication |
Environmental Science and Pollution Research |
Abbreviated Journal |
Environ. Sci. Pollut. Res. |
| Volume |
24 |
Issue |
33 |
Pages |
25741-25774 |
| Keywords |
Artificial reef; Diving; Ship recycling; Ship Recycling Facilities; Shipbreaking; Tourism; Working conditions; Wrecks; artificial reef; coastal erosion; coastal zone management; cost-benefit analysis; decision support system; developing world; economic impact; environmental economics; environmental impact assessment; environmental issue; facility location; health and safety; invasive species; profitability; recycling; shipping; tourism; working conditions; wreck; analysis; decision support system; economics; international cooperation; pollution; prevention and control; procedures; recycling; ship; statistics and numerical data; Decision Support Techniques; Environmental Pollution; Internationality; Recycling; Ships |
| Abstract |
In a globalized world, the world trade fleet plays a pivotal role in limiting transport costs. But, the management of obsolete ships is an acute problem, with most Ship Recycling Facilities (SRF) situated in developing countries. They are renowned for their controversial work and safety conditions and their environmental impact. Paradoxically, dismantlement is paid for by the shipowners in accordance with international conventions therefore it is more profitable for them to sell off ships destined for scrapping. Scuttling, the alternative to scrapping, is assessed in the present review to compare the cost/benefit ratios of the two approaches. Although scrapping provides employment and raw materials – but with environmental, health and safety costs – scuttling provides fisheries and diving tourism opportunities but needs appropriate management to avoid organic and metal pollution, introduction of invasive species and exacerbation of coastal erosion. It is also limited by appropriate bottom depth, ship type and number. The present review inventories the environmental, health, safety, economic, and forensic aspects of each alternative. © 2016, Springer-Verlag Berlin Heidelberg. |
| Address |
Département Langues et Gestion, Université Toulouse III – Paul Sabatier, 118 route de Narbonne, Toulouse cedex 09, 31062, France |
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Springer Verlag |
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09441344 (Issn) |
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no |
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EcoFoG @ webmaster @ |
Serial |
869 |
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| Author |
Gonzalez, M.A.; Roger, A.; Courtois, E.A.; Jabot, F.; Norden, N.; Paine, C.E.T.; Baraloto, C.; Thebaud, C.; Chave, J. |
| Title |
Shifts in species and phylogenetic diversity between sapling and tree communities indicate negative density dependence in a lowland rain forest |
Type |
Journal Article |
| Year |
2010 |
Publication |
Journal of Ecology |
Abbreviated Journal |
J. Ecol. |
| Volume |
98 |
Issue |
1 |
Pages |
137-146 |
| Keywords |
APG II plus rbcL megatree; density dependence; DNA barcoding; French Guiana; phylogenetic diversity; species diversity; tropical plant communities |
| Abstract |
P>1. As trees in a given cohort progress through ontogeny, many individuals die. This risk of mortality is unevenly distributed across species because of many processes such as habitat filtering, interspecific competition and negative density dependence. Here, we predict and test the patterns that such ecological processes should inscribe on both species and phylogenetic diversity as plants recruit from saplings to the canopy. 2. We compared species and phylogenetic diversity of sapling and tree communities at two sites in French Guiana. We surveyed 2084 adult trees in four 1-ha tree plots and 943 saplings in sixteen 16-m2 subplots nested within the tree plots. Species diversity was measured using Fisher's alpha (species richness) and Simpson's index (species evenness). Phylogenetic diversity was measured using Faith's phylogenetic diversity (phylogenetic richness) and Rao's quadratic entropy index (phylogenetic evenness). The phylogenetic diversity indices were inferred using four phylogenetic hypotheses: two based on rbcLa plastid DNA sequences obtained from the inventoried individuals with different branch lengths, a global phylogeny available from the Angiosperm Phylogeny Group, and a combination of both. 3. Taxonomic identification of the saplings was performed by combining morphological and DNA barcoding techniques using three plant DNA barcodes (psbA-trnH, rpoC1 and rbcLa). DNA barcoding enabled us to increase species assignment and to assign unidentified saplings to molecular operational taxonomic units. 4. Species richness was similar between saplings and trees, but in about half of our comparisons, species evenness was higher in trees than in saplings. This suggests that negative density dependence plays an important role during the sapling-to-tree transition. 5. Phylogenetic richness increased between saplings and trees in about half of the comparisons. Phylogenetic evenness increased significantly between saplings and trees in a few cases (4 out of 16) and only with the most resolved phylogeny. These results suggest that negative density dependence operates largely independently of the phylogenetic structure of communities. 6. Synthesis. By contrasting species richness and evenness across size classes, we suggest that negative density dependence drives shifts in composition during the sapling-to-tree transition. In addition, we found little evidence for a change in phylogenetic diversity across age classes, suggesting that the observed patterns are not phylogenetically constrained. |
| Address |
[Gonzalez, Mailyn A.; Roger, Aurelien; Courtois, Elodie A.; Jabot, Franck; Norden, Natalia; Thebaud, Christophe; Chave, Jerome] Univ Toulouse 3, Lab Evolut & Diversite Biol, UMR 5174, CNRS, F-31062 Toulouse, France, Email: gonzalez.mailyn@gmail.com |
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WILEY-BLACKWELL PUBLISHING, INC |
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0022-0477 |
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| Notes |
ISI:000272657400015 |
Approved |
no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
88 |
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| Author |
Leroy, C.; Cereghino, R.; Camas, J.F.; Pelozuelo, L.; Dejean, A.; Corbara, B. |
| Title |
Several aspects of the life of vascular epiphytes |
Type |
Journal Article |
| Year |
2010 |
Publication |
Biofutur |
Abbreviated Journal |
Biofutur |
| Volume |
315 |
Issue |
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Pages |
38-41 |
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[Leroy, Celine] CNRS, UMR Ecol Forets Guyane, Kourou 97379, French Guiana |
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| Publisher |
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER |
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| ISSN |
0294-3506 |
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| Notes |
ISI:000284987300005 |
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no |
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EcoFoG @ eric.marcon @ |
Serial |
18 |
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| Author |
Scotti, I.; Delph, L.F. |
| Title |
Selective trade-offs and sex-chromosome evolution in Silene latifolia |
Type |
Journal Article |
| Year |
2006 |
Publication |
Evolution |
Abbreviated Journal |
Evolution |
| Volume |
60 |
Issue |
9 |
Pages |
1793-1800 |
| Keywords |
antagonistic genes; linkage map; quantitative trait loci; sex-specific expression; Y chromosome |
| Abstract |
Alleles of sexually antagonistic genes (i.e., genes with alleles affecting fitness in opposite directions in the two sexes) can avoid expression in the sex to which they are detrimental via two processes: they are subsumed into the nonrecombining, sex-determining portion of the sex chromosomes or they evolve sex-limited expression. The former is considered more likely and leads to Y-chromosome degeneration. We mapped quantitative trait loci of major effect for sexually dimorphic traits of Silene latifolia to the recombining portions of the sex chromosomes and found them to exhibit sex-specific expression, with the Y chromosome in males controlling a relatively larger proportion of genetic variance than the X in females and the average autosome. Both reproductive and ecophysiological traits map to the recombining region of the sex chromosomes. We argue that genetic correlations among traits maintain recombination and polymorphism for these genes because of balancing selection in males, whereas sex-limited expression represses detrimental alleles in females. Our data suggest that the Y chromosome of S. latifolia plays a major role in the control of key metabolic activities beyond reproductive functions. |
| Address |
Indiana Univ, Dept Biol, Bloomington, IN 47405 USA, Email: ivan.scotti@kourou.cirad.fr |
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| Publisher |
SOC STUDY EVOLUTION |
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0014-3820 |
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| Notes |
ISI:000241226800005 |
Approved |
no |
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EcoFoG @ eric.marcon @ |
Serial |
174 |
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| Author |
Baraloto, C.; Forget, P.M. |
| Title |
Seed size, seedling morphology, and response to deep shade and damage in neotropical rain forest trees |
Type |
Journal Article |
| Year |
2007 |
Publication |
American Journal of Botany |
Abbreviated Journal |
Am. J. Bot. |
| Volume |
94 |
Issue |
6 |
Pages |
901-911 |
| Keywords |
cotyledons; French Guiana; functional morphology; herbivory; life history; phylogeny; regeneration strategy; shade tolerance |
| Abstract |
To investigate the existence of coordinated sets of seedling traits adapted to contrasting establishment conditions, we examined evolutionary convergence in seedling traits for 299 French Guianan woody plant species and the stress response in a shadehouse of species representing seed size gradients within five major cotyledon morphology types. The French Guianan woody plant community has larger seeds than other tropical forest communities and the largest proportion of hypogeal cotyledon type (59.2%) reported for tropical forests. Yet the community includes many species with intermediate size seeds that produce seedlings with different cotyledonal morphologies. A split-plot factorial design with two light levels (0.8% and 16.1% PAR) and four damage treatments (control, seed damage, leaf damage, stem damage) was used in the shadehouse experiment. Although larger-seeded species had higher survival and slower growth, these patterns were better explained by cotyledon type than by seed mass. Even larger-seeded species with foliar cotyledons grew faster than species with reserve-type cotyledons, and survival after stem grazing was five times higher in seedlings with hypogeal cotyledons than with epigeal cotyledons. Thus, to predict seedling performance using seed size, seedling morphology must also be considered. |
| Address |
Inst Natl Rech Agronom, UMR, Ecol Forets Guyane, Kourou, France, Email: baraloto.c@kourou.cirad.fr |
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BOTANICAL SOC AMER INC |
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0002-9122 |
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| Notes |
ISI:000249830600001 |
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no |
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EcoFoG @ eric.marcon @ |
Serial |
159 |
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| Author |
Baraloto, C.; Forget, P.M.; Goldberg, D.E. |
| Title |
Seed mass, seedling size and neotropical tree seedling establishment |
Type |
Journal Article |
| Year |
2005 |
Publication |
Journal of Ecology |
Abbreviated Journal |
J. Ecol. |
| Volume |
93 |
Issue |
6 |
Pages |
1156-1166 |
| Keywords |
French Guiana; life-history trade-offs; microhabitat; path analysis; regeneration strategy; relative growth rate; seedling survival; shade tolerance |
| Abstract |
1 We examined among- and within-species effects of seed mass for seedling establishment from seed to 5 years of age in a field experiment at Paracou, French Guiana. 2 Six seeds of each of eight species were weighed and planted into each of 120 plots (1 m(2)) throughout closed-canopy forest along 12 100-m transects in 1998. 3 We described the microhabitat of each planting site using principal components derived from measurements of light availability, soil moisture, carbon and nitrogen content, and soil phosphorus availability. Although both survival and relative growth rate (RGR) increased with increasing light availability, no other microhabitat variable significantly affected seedling performance. Nor did the magnitude of microhabitat effects on survival or RGR differ among species. 4 Larger-seeded species were more likely to survive from germination to 1 year as well as from 1 to 5 years of age. RGR for seedling height during the first year post-germination was not related to seed mass, but smaller-seeded species did grow slightly faster thereafter. Path analyses revealed that correlations between seed mass and performance were explained in part because larger seeds produced larger initial seedlings, which tended to survive better but grow more slowly. 5 We also analysed within-species effects of seed mass for the larger-seeded Eperua grandiflora and Vouacapoua americana (both Caesalpiniaceae). Larger seeds produced larger seedlings in both species, but larger seeds survived better only for Eperua. Larger seedlings grew more slowly in both species, but did not offset the early (Eperua) and later (Vouacapoua) positive direct effects of seed mass on RGR that may represent contrasting strategies for reserve deployment. 6 Our results demonstrate that seed size influences performance within and among species in part because of indirect effects of initial seedling size. However, we suggest that traits tightly correlated with seed mass at the species level, such as specific leaf area, leaf longevity and photosynthetic capacity, may also contribute to interspecific performance differences. |
| Address |
Museum Natl Hist Nat, Dept Ecol & Gest Biodivers, UMR 5176, CNRS, Brunoy, France, Email: baraloto.c@kourou.cirad.fr |
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BLACKWELL PUBLISHING |
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0022-0477 |
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| Notes |
ISI:000233287500012 |
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no |
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EcoFoG @ eric.marcon @ |
Serial |
250 |
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| Author |
Royer, M.; Herbette, G.; Eparvier, V.; Beauchene, J.; Thibaut, B.; Stien, D. |
| Title |
Secondary metabolites of Bagassa guianensis Aubl. wood: A study of the chemotaxonomy of the Moraceae family |
Type |
Journal Article |
| Year |
2010 |
Publication |
Phytochemistry |
Abbreviated Journal |
Phytochemistry |
| Volume |
71 |
Issue |
14-15 |
Pages |
1708-1713 |
| Keywords |
Bagassa guianensis; Moraceae; Secondary metabolites; Stilbenes; Moracins; Flavonoids; Natural durability |
| Abstract |
In order to explain the durability of the Moraceae plant family, phytochemistry of Bagassa guianensis was performed. Ethyl acetate extract was obtained from the heartwood and 18 secondary metabolites were isolated, including 6 moracins [6-O-methyl-moracin M, 6-O-methyl-moracin N and moracin Z; previously identified: moracin M, moracin N and moracin P], 8 stilbenoids [presently identified: (-)-epialboctalol and arachidin 4; previously identified: alboctalol, trans-resveratrol, arachidin 2, trans-oxyresveratrol and artogomezianol], 3 previously identified flavonoids, steppogenin, katuranin and dihydromorin, beta-sitosterol and resorcinol. Previous studies suggest that stilbenoids are responsible for the natural durability of wood. Our study has determined that B. guianensis is closely related to Morus sp. in phylogeny and should be included in the Moreae sensu stricto tribe of the Moraceae family. (C) 2010 Elsevier Ltd. All rights reserved. |
| Address |
[Royer, Mariana; Eparvier, Veronique; Thibaut, Bernard; Stien, Didier] Univ Antilles Guyane, CNRS, UMR Ecofog, F-97337 Cayenne, France, Email: didier.stien@guyane.cnrs.fr |
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PERGAMON-ELSEVIER SCIENCE LTD |
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0031-9422 |
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ISI:000282453900013 |
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no |
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EcoFoG @ eric.marcon @ |
Serial |
30 |
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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 |
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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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00319422 (Issn) |
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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 |
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EcoFoG @ webmaster @ |
Serial |
381 |
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