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Author Quilichini, A.; Macquart, D.; Barabe, D.; Albre, J.; Gibernau, M. openurl 
  Title Reproduction of the West Mediterranean endemic Arum pictum (Araceae) on Corsica Type Journal Article
  Year 2010 Publication Plant Systematics and Evolution Abbreviated Journal Plant Syst. Evol.  
  Volume 287 Issue (up) 3-4 Pages 179-187  
  Keywords Floral volatiles; Ocimene; Insect pollination; Reproductive success; Sphaeroceridae; Thermogenesis  
  Abstract Pollination in the genus Arum appears to be in general a complex deceptive pollination process. The genus Arum is composed of 28 species, all belonging to the subgenus Arum, except A. pictum, the only species of the subgenus Gymnomesium, which is basal and sister to all other Arum species. The aim of this paper is to document the pollination ecology of the insular Arum pictum, the only Arum species to flower in autumn, on the island of Corsica (France). The anthesis cycle of A. pictum occurs during the day, attracting sphaerocerid flies and staphylinid beetles early in the morning and late in the afternoon of the first day. The pollen is released from the anthers early in the morning of the second day before the departure of the insects. Its thermogenic cycle matches the anthesis cycle with an original and unique, bimodal temperature pattern of the appendix (morning and afternoon), contrary to the unimodal pattern found in all other studied Arum species. Data from reproductive success and seed sets suggest that sexual reproduction in this species is limited by pollen (e.g. attracting lured insects) rather than by resources. The biology of this Western Mediterranean species appears to be different from other Western European Arum and close to some Eastern Mediterranean species. Further studies are needed to establish whether Arum pictum represents some ancestral stage or whether its peculiar biological traits are adapted to its insular distribution.  
  Address [Quilichini, Angelique; Gibernau, Marc] CNRS, UMR 8172, Ecole Forets Guyane, F-97387 Kourou, France, Email: marc.gibernau@ecofog.gf  
  Corporate Author Thesis  
  Publisher SPRINGER WIEN Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0378-2697 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000279479800008 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 51  
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Author Guitet, S.; Blanc, L.; Trombe, P.J.; Lehallier, B. openurl 
  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 (up) 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  
  Corporate Author Thesis  
  Publisher CIRAD-CENTRE COOPERATION INT RECHERCHE AGRONOMIQUE POUR Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0006-579X ISBN Medium  
  Area Expedition Conference  
  Notes ISI:000272488700002 Approved no  
  Call Number EcoFoG @ eric.marcon @ Serial 91  
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Author Tahiri, A.; Amissa Adima, A.; Adjé, F.A.; Amusant, N. url  openurl
  Title Pesticide effects and screening of extracts of Azadirachta Indica (A.) Juss. on the Macrotermes bellicosus rambur termite Type Journal Article
  Year 2011 Publication Bois et Forets des Tropiques Abbreviated Journal Effet pesticide et screening des extraits de Azadirachta indica (A.) Juss. sur le termite Macroterme  
  Volume 65 Issue (up) 310 Pages 79-88  
  Keywords Azadirachta indica; Pesticide properties; Phytochemical screening; Termite  
  Abstract To recommend applications in the field of a naturally insecticide plant substance as an alternative to chemical control against termite attacks, several important prerequisites need to be satisfied to ensure its effectiveness. The toxicity, lethal dose, mode of action, persistence of insecticide effect and chemical composition of total aqueous, alcohol and hexane extracts of the leaves and seeds of the neem tree, Azadirachta indica, were tested with the Macrotermes bellicosus termite. The extracts were found to be highly toxic to termites on contact, killing the entire population tested. The insecticide effect of the extracts persisted from 2.4 to 4.2 days. The aqueous and hexane extracts were the most toxic (LD50 0.422±0.018 to 4,466±0,162 mg/l). Contact and inhalation were both essential to their effectiveness. The aqueous extract of seeds, which is the most active, is also capable of being transferred through the colony during social tasks. However, it seems to have an anti-appetent effect on termites and does not act by ingestion. It contains phenol compounds (tannins and flavonoids) and saponins. The hexane extract of seeds is oily and contains 11 fatty acids as well as terpenoids, flavonoids and saponins.  
  Address Cirad Laboratoire de Chimie du Bois, 34398 Montpellier Cedex 5, France  
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  Area Expedition Conference  
  Notes Export Date: 20 November 2012; Source: Scopus Approved no  
  Call Number EcoFoG @ webmaster @ Serial 447  
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Author Tritsch, I.; Gond, V.; Oszwald, J.; Davy, D.; Grenand, P. url  openurl
  Title Territorial dynamics in the wayãpi and teko amerindian communities of the middle oyapock, camopi, French Guiana Type Journal Article
  Year 2012 Publication Bois et Forets des Tropiques Abbreviated Journal Bois Forets Tropiques  
  Volume 66 Issue (up) 311 Pages 49-61  
  Keywords Amerindian populations; French Guiana; Protected area; Slash-and-burn cultivation; System of natural resource use; Territorial management  
  Abstract Amerindian populations have been experiencing major socio-economic changes for several decades, in a context of rapid demographic growth. This article addresses the ways in which the Amerindian populations of French Guiana have adapted their land use and natural resource management systems to cope with the pressures exerted on their lands and lifestyles. The aim was to investigate the resilience of their systems for land and natural resource use. The concentration of Amerindian habitats around the town of Camopi, which is linked to the availability of health and school infrastructure and to efforts to promote a sedentary lifestyle, is a factor of increasing natural resource scarcity and social alienation. The system is adapting by fragmenting the Amerindian habitat into peripheral villages and extending farmlands along rivers to access to more space. These villages replicate patterns of spatial organisation that are similar to those found in traditional Wayãpi and Teko villages, except that habitation is sedentary, as families hope to have their villages equipped with at lEast drinking water and electrification. Habitat fragmentation is spatially limited by the time taken for daily journeys to school, and therefore by school bus services (dugout), which means that land use is effectively conditioned by services and infrasrtucture. Other living quarters are maintained at a distance from the village, so that the habitat is bi-local: families have a main home where services and infrastructure are available, and a secondary itinerant home further away, which is chosen according to the quality of farmland, the hunting yield of hunting resources, the history of the location and family networks. These distant homes are kept up by spending income from social assistance on transport. It's thus shown that these Amerindian systems for land and natural resource uses are highly adaptable, in that their sustainability is guaranteed by the reconstruction of a circular pattern of mobility in accordance with the intensity of resource use.  
  Address Ird Observatoire Hommes-Milieux Oyapock, Cnrs Guyane, 2, avenue Gustave Charlery, 97300 Cayenne, France  
  Corporate Author Thesis  
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  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0006579x (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 17 April 2013; Source: Scopus; Language of Original Document: French; Correspondence Address: Tritsch, I.; Université des Antilles et de la Guyane/Cirad, Umr Écologie des forêts de Guyane, Campus agronomique de Kourou, 97310 Kourou, France Approved no  
  Call Number EcoFoG @ webmaster @ Serial 482  
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Author Sist, P.; Blanc, L.; Mazzei, L.; Baraloto, C.; Aussenac, R. url  openurl
  Title Current knowledge on overall post-logging biomass dynamics in Northern Amazonian forests Type Journal Article
  Year 2012 Publication Bois et Forets des Tropiques Abbreviated Journal Bois Forets Tropiques  
  Volume 66 Issue (up) 314 Pages 41-49  
  Keywords Above ground-biomass; Amazonian rainforests; Logging impact; Silviculture  
  Abstract This article presents the effects of logging on the dynamics of above-ground biomass from the results of the post-logging study within two forests: Cikel in Eastern Pará, Brazil and Paracou in French Guiana. The main objective is to compare the impact of commercial logging on the regeneration of the aboveground biomass in these forests whose characteristics differ in terms of structure and growth. In both sites, the intensity of exploitation is a key factor in determining the loss of biomass and the time required for its regeneration. In Paracou, the regeneration of biomass lost during conventional logging of 10 trees per hectare takes 45 years and more than 100 years when operating with higher intensity (21 trees/ha ). In Cikel the forest biomass regenerates after 49 years harvesting 6 trees/ha and that takes 87 years after removal of 8 trees/ha. This regeneration needs similar time on both sites but with lower logging intensity at Cikel, in which felled trees are larger with a greater biomass than those of Paracou. This post-logging study has established a direct correlation of the dynamics of the biomass with the initial structure of the forest, as well as with the parameters of forest dynamics: mortality, growth and recruitment. The accumulation of biomass by the tree growth of the two remaining stands is a key parameter for the net carbon storage, while the contribution of recruitment in Paracou becomes significant only after 10 years after felling. Therefore in view to improve the growth of residual trees, it is compulsory to apply adequate silvicultural treatments such as selective thinning or removal of vines. While the two forests are geographically close enough, their regenerative abilities differ and because of the significant difference in size of the trees, the forest could tolerate more intensive harvesting in French Guiana.  
  Address Université Antilles-Guyane Cayenne, Guyane, France  
  Corporate Author Thesis  
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  Series Volume Series Issue Edition  
  ISSN 0006579x (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 5 June 2013; Source: Scopus; Language of Original Document: English; Correspondence Address: Cirad UR B and SEF, Campus international de Baillarguet, 34398 Montpellier Cedex 5, France Approved no  
  Call Number EcoFoG @ webmaster @ Serial 489  
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Author Vincent, G.; Caron, F.; Sabatier, D.; Blanc, L. url  openurl
  Title LiDAR shows that higher forests have more slender trees Type Journal Article
  Year 2012 Publication Bois et Forets des Tropiques Abbreviated Journal Bois Forets Tropiques  
  Volume 66 Issue (up) 314 Pages 51-56  
  Keywords Competition; Fertility; French Guiana; LiDAR; Tree allometry  
  Abstract High-density Airborne Laser Scanning was used to derive the Canopy Height Model (CHM) of an experimental forest site in the neotropics (Paracou, French Guiana). Individual tree heights were computed by manually segmenting tree crowns on the CHM and then extracting the local maximum canopy height. Three hundred and ninety-six (396) height estimates were matched from dominant or emergent trees with the corresponding ground records of stem diameters sampled in two plots with different mean canopy heights (28.1 m vs. 31.3 m). Tree slenderness was found to be positively and very significantly correlated with mean canopy height at the plot level. The same correlation was observed at the species population level for the three species adequately sampled. It can therefore be concluded that stratification by canopy height is to be recommended when deriving allometric relationships in order to avoid bias in Above Ground Biomass estimations.  
  Address CIRAD, UMR Ecofog, 97300 Kourou, France  
  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 0006579x (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 5 June 2013; Source: Scopus; Language of Original Document: English; Correspondence Address: IRD, UMR AMAP, 34000 Montpellier, France Approved no  
  Call Number EcoFoG @ webmaster @ Serial 490  
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Author Zaremski, A.; Gastonguay, L.; Zaremski, C.; Chaffanel, F.; Le Floch, G.; Beauchene, J. url  openurl
  Title Capacity of tropical forest soils of french guiana and réunion for depolluting the woods impregnated with biocides Type Journal Article
  Year 2013 Publication Bois et Forets des Tropiques Abbreviated Journal Bois Forets Tropiques  
  Volume 67 Issue (up) 318 Pages 51-58  
  Keywords Bioremediation; Copper chromium arsenic(CCA) wood-destroying fungi; Depollution; Loss of mass; Pentachlorophenol(PCP); Treated timber; Tropical soil  
  Abstract Wood material for a long time was treated with fungicides or insecticides whose impact on the soil after leaching constitutes a real environmental problem. Nowadays, most of the studies on degradation of these toxic products was carried out with microorganisms which have been isolated in the laboratory. The present study sought to refine the knowledge vis-à-vis these microorganisms, especially wood-destroying fungi degrading pollutants in situ, from which few data are actually available. To decontaminate treated wood, the capacity of wooddestroying microorganisms from tropical forest soils of French Guiana and Reunion was evaluated to degrade toxic biocides. These are pentachlorophenol (PCP) and copper- chromium arsenic based compounds (CCA). Monitoring the degradation of samples of red pine, Pinus resinosa, shows that soils of French Guiana are more efficient than those of Reunion Island in terms of microbial activity vis-àvis these two biocides. A significant difference in loss of mass in specimens of red pine treated with CCA and PCP can range from single to double (respectively 18% and 30%). These findings confirm that CCA is less leacher and less degradable than the PCP by microorganisms in the soil. According to the scale of mass loss in laboratory tests, the wood so treated would be classified very not durable after three years of contact with soil, while the treatment is expected to be very durable.  
  Address Cirad Umr Ecofog, BP 701, 97387 Kourou cedex, France  
  Corporate Author Thesis  
  Publisher Lavoisier Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 17775760 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 12 May 2014; Source: Scopus; Language of Original Document: French Approved no  
  Call Number EcoFoG @ webmaster @ Serial 540  
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Author Romero, G.Q.; Marino, N.A.C.; MacDonald, A.A.M.; Céréghino, R.; Trzcinski, M.K.; Mercado, D.A.; Leroy, C.; Corbara, B.; Farjalla, V.F.; Barberis, I.M.; Dézerald, O.; Hammill, E.; Atwood, T.B.; Piccoli, G.C.O.; Bautista, F.O.; Carrias, J.-F.; Leal, J.S.; Montero, G.; Antiqueira, P.A.P.; Freire, R.; Realpe, E.; Amundrud, S.L.; de Omena, P.M.; Campos, A.B.A.; Kratina, P.; O’Gorman, E.J.; Srivastava, D.S. doi  openurl
  Title Extreme rainfall events alter the trophic structure in bromeliad tanks across the Neotropics Type Journal Article
  Year 2020 Publication Nature Communications Abbreviated Journal Nat. Commun.  
  Volume 11 Issue (up) 3215 Pages  
  Keywords fresh water; rain; fresh water; agricultural intensification; angiosperm; biomass; climate change; ecosystem function; extreme event; food web; freshwater ecosystem; Neotropic Ecozone; precipitation intensity; rainfall; trophic structure; Article; biomass; Central America; controlled study; detritivore; drought; flooding; food web; hydrology; microcosm; Neotropics; nonhuman; precipitation; predator; South America; trophic level; animal; biodiversity; Bromelia; climate change; ecosystem; flooding; food chain; Central America; South America; Animals; Biodiversity; Biomass; Bromelia; Climate Change; Droughts; Ecosystem; Floods; Food Chain; Fresh Water; Hydrology; South America  
  Abstract Changes in global and regional precipitation regimes are among the most pervasive components of climate change. Intensification of rainfall cycles, ranging from frequent downpours to severe droughts, could cause widespread, but largely unknown, alterations to trophic structure and ecosystem function. We conducted multi-site coordinated experiments to show how variation in the quantity and evenness of rainfall modulates trophic structure in 210 natural freshwater microcosms (tank bromeliads) across Central and South America (18°N to 29°S). The biomass of smaller organisms (detritivores) was higher under more stable hydrological conditions. Conversely, the biomass of predators was highest when rainfall was uneven, resulting in top-heavy biomass pyramids. These results illustrate how extremes of precipitation, resulting in localized droughts or flooding, can erode the base of freshwater food webs, with negative implications for the stability of trophic dynamics. © 2020, The Author(s).  
  Address Institute of Biological Sciences, Universidade Federal do Pará, Belém, PA, Brazil  
  Corporate Author Thesis  
  Publisher Nature Research Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 20411723 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number EcoFoG @ webmaster @ Serial 944  
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Author Dejean, A.; Ryder, S.; Bolton, B.; Compin, A.; Leponce, M.; Azémar, F.; Céréghino, R.; Orivel, J.; Corbara, B. url  openurl
  Title How territoriality and host-tree taxa determine the structure of ant mosaics Type Journal Article
  Year 2015 Publication The Science of Nature Abbreviated Journal Sci Nat  
  Volume 102 Issue (up) 33 Pages 1-9  
  Keywords Africa; Arboreal ants; Distribution; Host-tree selection; Rainforest canopies  
  Abstract Very large colonies of territorially dominant arboreal ants (TDAAs), whose territories are distributed in a mosaic pattern in the canopies of many tropical rainforests and tree crop plantations, have a generally positive impact on their host trees. We studied the canopy of an old Gabonese rainforest (ca 4.25 ha sampled, corresponding to 206 Blarge trees) at a stage just preceding forest maturity (the Caesalpinioideae dominated; the Burseraceae were abundant). The tree crowns sheltered colonies from 13 TDAAs plus a codominant species out of the 25 ant species recorded. By mapping the TDAAs' territories and using a null model cooccurrence analysis, we confirmed the existence of an ant mosaic. Thanks to a large sampling set and the use of the self-organizing map algorithm (SOM), we show that the distribution of the trees influences the structure of the ant mosaic, suggesting that each tree taxon attracts certain TDAA species rather than others. The SOMalso improved our knowledge of the TDAAs' ecological niches, showing that these ant species are ecologically distinct from each other based on their relationships with their supporting trees. Therefore, TDAAs should not systematically be placed in the same functional group even when they belong to the same genus.We conclude by reiterating that, in addition to the role played by TDAAs' territorial competition, host trees contribute to structuring ant mosaics through multiple factors, including host-plant selection by TDAAs, the age of the trees, the presence of extrafloral nectaries, and the taxa of the associated hemipterans. © Springer-Verlag Berlin Heidelberg 2015.  
  Address Université Clermont Auvergne, Université Blaise Pascal (LMGE), Clermont-Ferrand, France  
  Corporate Author Thesis  
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  Notes Export Date: 16 October 2015 Approved no  
  Call Number EcoFoG @ webmaster @ Serial 632  
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Author Devault, D.A.; Beilvert, B.; Winterton, P. url  doi
openurl 
  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 (up) 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  
  Corporate Author Thesis  
  Publisher Springer Verlag Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 09441344 (Issn) ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number EcoFoG @ webmaster @ Serial 869  
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