| Records |
| Author |
Sist, P.; Rutishauser, E.; Peña-Claros, M.; Shenkin, A.; Herault, B.; Blanc, L.; Baraloto, C.; Baya, F.; Benedet, F.; da Silva, K.E.; Descroix, L.; Ferreira, J.N.; Gourlet-Fleury, S.; Guedes, M.C.; Bin Harun, I.; Jalonen, R.; Kanashiro, M.; Krisnawati, H.; Kshatriya, M.; Lincoln, P.; Mazzei, L.; Medjibé, V.; Nasi, R.; d'Oliveira, M.V.N.; de Oliveira, L.C.; Picard, N.; Pietsch, S.; Pinard, M.; Priyadi, H.; Putz, F.E.; Rodney, K.; Rossi, V.; Roopsind, A.; Ruschel, A.R.; Shari, N.H.Z.; Rodrigues de Souza, C.; Susanty, F.H.; Sotta, E.D.; Toledo, M.; Vidal, E.; West, T.A.P.; Wortel, V.; Yamada, T. |
| Title |
The Tropical managed forests Observatory: A research network addressing the future of tropical logged forests |
Type |
Journal Article |
| Year |
2015 |
Publication |
Applied Vegetation Science |
Abbreviated Journal |
Appl. Veg. Sci. |
| Volume |
18 |
Issue |
1 |
Pages |
171-174 |
| Keywords |
Biodiversity; Carbon cycle; Climate change; Ecosystem resilience; Logging; Silviculture; Tropical forests; Tropical managed forests Observatory |
| Abstract |
While attention on logging in the tropics has been increasing, studies on the long-term effects of silviculture on forest dynamics and ecology remain scare and spatially limited. Indeed, most of our knowledge on tropical forests arises from studies carried out in undisturbed tropical forests. This bias is problematic given that logged and disturbed tropical forests are now covering a larger area than the so-called primary forests. A new network of permanent sample plots in logged forests, the Tropical managed Forests Observatory (TmFO), aims to fill this gap by providing unprecedented opportunities to examine long-term data on the resilience of logged tropical forests at regional and global scales. TmFO currently includes 24 experimental sites distributed across three tropical regions, with a total of 490 permanent plots and 921 ha of forest inventories. To improve our knowledge of the resilience of tropical logged forests, 20 research institutes are now collaborating on studies on the effects of logging on forest structure, productivity, biodiversity and carbon fluxes at large spatial and temporal scales. These studies are carried out in the Tropical managed Forests Observatory (TmFO), an international network including 24 sites and 490 permanent sample plots across South America, Africa and South East Asia. |
| Address |
Duke University's Nicholas School of the EnvironmentNorth Carolina, United States |
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Thesis |
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| Publisher |
Wiley-Blackwell |
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Abbreviated Series Title |
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Edition |
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| ISSN |
14022001 (Issn) |
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| Notes |
Export Date: 12 December 2014; Coden: Avscf; Correspondence Address: Sist, P.; Cirad, UR 105 TA/10CFrance |
Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial  |
571 |
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| Author |
Lenoir, A.; Touchard, A.; Devers, S.; Christidès, J.-P.; Boulay, R.; Cuvillier-Hot, V. |
| Title |
Ant cuticular response to phthalate pollution |
Type |
Journal Article |
| Year |
2014 |
Publication |
Environmental Science and Pollution Research |
Abbreviated Journal |
Environ. Sci. Pollut. Res. |
| Volume |
21 |
Issue |
23 |
Pages |
13446-13451 |
| Keywords |
Absorption; Ants; Bbp; Bioindicator; Cuticle; Dbp; Dehp; DiBP; Phthalates; Pollutants |
| Abstract |
Phthalates are common atmospheric contaminants used in the plastic industry. Ants have been shown to constitute good bioindicators of phthalate pollution. Hence, phthalates remain trapped on ant cuticles which are mostly coated with long-chain hydrocarbons. In this study, we artificially contaminated Lasius niger ants with four phthalates: dibutyl phthalate (DBP), diisobutyl phthalate (DiBP), di(2-ethylhexyl) phthalate (DEHP), and benzyl butyl phthalate (BBP). The first three have previously been found on ants in nature in Touraine (France), while the fourth has not. The four phthalates disappeared rapidly (less than 5 days) from the cuticles of live ants. In contrast, on the cuticles of dead ants, DEHP quantities remained unchanged over time. These results indicate that phthalates are actively absorbed by the cuticles of live ants. Cuticular absorption of phthalates is nonspecific because eicosane, a nonnatural hydrocarbon on L. niger cuticle, was similarly absorbed. Ants are important ecological engineers and may serve as bioindicators of ecosystem health. We also suggest that ants and more generally terrestrial arthropods may contribute to the removal of phthalates from the local environment. |
| Address |
CNRS, UMR Écologie des Forêts de Guyane (EcoFoG), Campus Agronomique, BP 316Kourou Cedex, France |
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Thesis |
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| Publisher |
Springer Verlag |
Place of Publication |
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Summary Language |
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Edition |
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| ISSN |
09441344 (Issn) |
ISBN |
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| Notes |
Export Date: 5 December 2014; Coden: Esple; Correspondence Address: Lenoir, A.; IRBI, Institut de Recherche sur la Biologie de l’Insecte, UMR CNRS 7261, Université François RabelaisFrance |
Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial |
570 |
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| Author |
Cottet, K.; Genta-Jouve, G.; Fromentin, Y.; Odonne, G.; Duplais, C.; Laprévote, O.; Michel, S.; Lallemand, M.-C. |
| Title |
Comparative LC-MS-based metabolite profiling of the ancient tropical rainforest tree Symphonia globulifera |
Type |
Journal Article |
| Year |
2014 |
Publication |
Phytochemistry |
Abbreviated Journal |
Phytochemistry |
| Volume |
108 |
Issue |
|
Pages |
102-108 |
| Keywords |
Kendrick mass defect; Lc-Ms; Plant organs; Symphonia globulifera; Untargeted metabolomics; Symphonia globulifera |
| Abstract |
In the last few years, several phytochemical studies have been undertaken on the tropical tree Symphonia globulifera leading to the isolation and characterisation of several compounds exhibiting antiparasitic activities against Plasmodium falciparum, Trypanosoma brucei and Leishmania donovani. The comparative LC-MS based metabolite profiling study conducted on the tree led to the identification of compounds originating from specific tissues. The results showed that renewable organs/tissues can be used as the starting material for the production of polycyclic poly-prenylated-acylphloroglucinols, therefore reducing impacts on biodiversity. This study also underlined the lack of knowledge on the secondary metabolites produced by S. globulifera since only a small number of the total detected features were putatively identified using the database of known compounds for the species. |
| Address |
Laboratoire de Chimie et Toxicologie Analytique et Cellulaire, UMR 8638, Université Paris Descartes Sorbonne Paris Cité, 4 Avenue de l'ObservatoireParis, France |
| Corporate Author |
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Thesis |
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| Publisher |
Elsevier Ltd |
Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
00319422 (Issn) |
ISBN |
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| Notes |
Export Date: 2 December 2014; Coden: Pytca; Correspondence Address: Genta-Jouve, G.; Laboratoire de Pharmacognosie, UMR 8638, Université Paris Descartes Sorbonne Paris Cité, 4 Avenue de l'Observatoire, France |
Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial |
569 |
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| Author |
Aili, S.R.; Touchard, A.; Escoubas, P.; Padula, M.P.; Orivel, J.; Dejean, A.; Nicholson, G.M. |
| Title |
Diversity of peptide toxins from stinging ant venoms |
Type |
Journal Article |
| Year |
2014 |
Publication |
Toxicon |
Abbreviated Journal |
Toxicon |
| Volume |
92 |
Issue |
|
Pages |
166-178 |
| Keywords |
Ant venom; Chemotaxonomy; Disulfide linkage; Peptides; Venom biochemistry |
| Abstract |
Ants (Hymenoptera: Formicidae) represent a taxonomically diverse group of arthropods comprising nearly 13,000 extant species. Sixteen ant subfamilies have individuals that possess a stinger and use their venom for purposes such as a defence against predators, competitors and microbial pathogens, for predation, as well as for social communication. They exhibit a range of activities including antimicrobial, haemolytic, cytolytic, paralytic, insecticidal and pain-producing pharmacologies. While ant venoms are known to be rich in alkaloids and hydrocarbons, ant venoms rich in peptides are becoming more common, yet remain understudied. Recent advances in mass spectrometry techniques have begun to reveal the true complexity of ant venom peptide composition. In the few venoms explored thus far, most peptide toxins appear to occur as small polycationic linear toxins, with antibacterial properties and insecticidal activity. Unlike other venomous animals, a number of ant venoms also contain a range of homodimeric and heterodimeric peptides with one or two interchain disulfide bonds possessing pore-forming, allergenic and paralytic actions. However, ant venoms seem to have only a small number of monomeric disulfide-linked peptides. The present review details the structure and pharmacology of known ant venom peptide toxins and their potential as a source of novel bioinsecticides and therapeutic agents. |
| Address |
Laboratoire Écologie Fonctionnelle et Environnement, Université de Toulouse, 118 Route de NarbonneToulouse, France |
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Thesis |
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| Publisher |
Elsevier Ltd |
Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
00410101 (Issn) |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
Export Date: 2 December 2014; Coden: Toxia; Correspondence Address: Nicholson, G.M.; Neurotoxin Research Group, School of Medical and Molecular Biosciences, University of Technology SydneyAustralia |
Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial |
568 |
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| Author |
Gao, H.; Grüschow, S.; Barke, J.; Seipke, R.F.; Hill, L.M.; Orivel, J.; Yu, D.W.; Hutchings, M.; Goss, R.J.M. |
| Title |
Filipins: The first antifungal “weed killers” identified from bacteria isolated from the trap-ant |
Type |
Journal Article |
| Year |
2014 |
Publication |
RSC Advances |
Abbreviated Journal |
RSC Adv. |
| Volume |
4 |
Issue |
100 |
Pages |
57267-57270 |
| Keywords |
Anti-fungal |
| Abstract |
Allomerus ants ensure that they have sufficient nitrogen in their diet by trapping and consuming other insects. In order to construct their traps, like the more extensively studied leaf cutter ants, they employ fungal farming. Pest management within these fungal cultures has been speculated to be due to the ants' usage of actinomycetes capable of producing antifungal compounds, analogous to the leafcutter ant mutualism. Here we report the first identification of a series of antifungal compounds, the filipins, and their associated biosynthetic genes isolated from a bacterium associated with this system. |
| Address |
State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of ZoologyKunming, Yunnan, China |
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| Publisher |
Royal Society of Chemistry |
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20462069 (Issn) |
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| Notes |
Export Date: 20 November 2014; Coden: Rscac; Correspondence Address: Goss, R.J.M.; School of Chemistry, University of St. AndrewsUnited Kingdom; Funding Details: 311848, EC, European Commission |
Approved |
no |
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EcoFoG @ webmaster @ |
Serial |
567 |
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| Author |
Dejean, A.; Corbara, B. |
| Title |
Reactions by army ant workers to nestmates having had contact with sympatric ant species |
Type |
Journal Article |
| Year |
2014 |
Publication |
Comptes Rendus Biologies |
Abbreviated Journal |
C. R. Biol. |
| Volume |
337 |
Issue |
11 |
Pages |
642-645 |
| Keywords |
Army ants Antipredation Colony-mate recognition Eciton Transferring cuticular compounds; Eciton; Formicidae |
| Abstract |
It was recently shown that Pheidole megacephala colonies (an invasive species originating from Africa) counterattack when raided by the army ant, Eciton burchellii. The subsequent contact permits Pheidole cuticular compounds (that constitute the “colony odour”) to be transferred onto the raiding Eciton, which are then not recognised by their colony-mates and killed. Using a simple method for transferring cuticular compounds, we tested if this phenomenon occurs for Neotropical ants. Eciton workers rubbed with ants from four sympatric species were released among their colony-mates. Individuals rubbed with Solenopsis saevissima or Camponotus blandus workers were attacked, but not those rubbed with Atta sexdens, Pheidole fallax or with colony-mates (control lot). So, the chemicals of certain sympatric ant species, but not others, trigger intra-colonial aggressiveness in Eciton. We conclude that prey-ant chemicals might have played a role in the evolution of army ant predatory behaviour, likely influencing prey specialization in certain cases. |
| Address |
Clermont Université, Université Blaise-Pascal, LMGE, BP 10448Clermont-Ferrand, France |
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Thesis |
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| Publisher |
Elsevier Masson SAS |
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Edition |
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| ISSN |
16310691 (Issn) |
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| Notes |
Export Date: 12 November 2014; Coden: Crboc; Correspondence Address: Dejean, A.; CNRS, É Cologie des Forêts de Guyane, UMR-CNRS 8172, BP 316, France |
Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial |
566 |
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| Author |
Lachenaud, P.; Rossi, V.; Thevenin, J.-M.; Doaré, F. |
| Title |
The “Guiana” genetic group: A new source of resistance to cacao (Theobroma cacao L.) black pod rot caused by Phytophthora capsici |
Type |
Journal Article |
| Year |
2015 |
Publication |
Crop Protection |
Abbreviated Journal |
Crop Prot. |
| Volume |
67 |
Issue |
|
Pages |
91-95 |
| Keywords |
Black pod; Cocoa; French guiana; Phytophthora capsici; Resistance; Phytophthora capsici; Theobroma cacao |
| Abstract |
Black pod rot, caused by Stramenopiles of the genus Phytophthora, leads to serious production losses in all cocoa growing zones. In order to reduce the impact of these pests, preference is given to genetic control using resistant varieties, and sources of resistance are actively being sought, particularly in wild cacao trees. Surveys were undertaken in the natural cacao tree populations of south-eastern French Guiana between 1985 and 1995 and an abundant amount of plant material belonging to a particular genetic group, the “Guiana” group, was collected. A great deal of work has shown the merits of this genetic group as a source of resistance to Phytophthora palmivora and megakarya. We describe here the results of a global study to assess the resistance of the 186 clones in the “Guiana” group “core collection” to a Guianese strain of Phytophthora capsici (strain Reg 2-6). This study, which used an efficient methodology (fifteen series of tests on leaf discs and a statistical test adapted to the ordinal nature of the basic data), showed that the “Guiana” genetic group is a major source of resistance to P.capsici. Strain Reg 2-6 proves to be particularly virulent, as the Scavina 6 control, an international reference for resistance to Phytophthora, is not resistant to it. However, 24 clones of the “Guiana” group are, and 92 have proved to be more resistant than Scavina 6, thereby showing the interest of the group in genetically controlling P.capsici.Thus, of the clones in the Guiana group that are more resistant to P.capsici than Scavina 6, some, which are also resistant to P.palmivora and/or Phytophthora megakarya, and also displaying some other notable qualities, could be incorporated into cocoa genetic improvement programmes in countries where P.capsici is rife on cacao trees. |
| Address |
CIRAD, UPR BSEF, BP 2572Yaoundé, Cameroon |
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Thesis |
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| Publisher |
Elsevier Ltd |
Place of Publication |
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Summary Language |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
02612194 (Issn) |
ISBN |
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| Notes |
Export Date: 12 November 2014; Coden: Crptd; Correspondence Address: Lachenaud, P.; CIRAD, UPR 106, BP 701, France |
Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial |
565 |
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| Author |
Petit, M.; Céréghino, R.; Carrias, J.-F.; Corbara, B.; Dezerald, O.; Petitclerc, F.; Dejean, A.; Leroy, C. |
| Title |
Are ontogenetic shifts in foliar structure and resource acquisition spatially conditioned in tank-bromeliads? |
Type |
Journal Article |
| Year |
2014 |
Publication |
Botanical Journal of the Linnean Society |
Abbreviated Journal |
Bot J Linn Soc |
| Volume |
175 |
Issue |
2 |
Pages |
299-312 |
| Keywords |
Aechmea mertensii; Camponotus femoratus; French Guiana; leaf traits; mutualistic ants; natural stable isotopes; ontogeny; Pachycondyla goeldii; phenotypic plasticity; plant morphology |
| Abstract |
The phenotypic plasticity of plants has been explored as a function of either ontogeny (apparent plasticity) or environment (adaptive plasticity), although few studies have analyzed these factors together. In the present study, we take advantage of the dispersal of Aechmea mertensii bromeliads by Camponotus femoratus or Pachycondyla goeldii ants in shaded and sunny environments, respectively, to quantify ontogenetic changes in morphological, foliar, and functional traits, and to analyze ontogenetic and ant species effects on 14 traits. Most of the morphological (plant height, number of leaves), foliar (leaf thickness, leaf mass area, total water content, trichome density), and functional (leaf δ13C) traits differed as a function of ontogeny. Conversely, only leaf δ15N showed an adaptive phenotypic plasticity. On the other hand, plant width, tank width, longest leaf length, stomatal density, and leaf C concentration showed an adaptation to local environment with ontogeny. The exception was leaf N concentration, which showed no trend at all. Aechmea mertensii did not show an abrupt morphological modification such as in heteroblastic bromeliads, although it was characterized by strong, size-related functional modifications for CO2 acquisition. The adaptive phenotypic variation found between the two ant species indicates the spatially conditioned plasticity of A. mertensii in the context of insect-assisted dispersal. However, ant-mediated effects on phenotypic plasticity in A. mertensii are not obvious because ant species and light environment are confounding variables. © 2014 The Linnean Society of London, Botanical Journal of the Linnean Society, 2014, 175, 299–312. |
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1095-8339 |
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Approved |
no |
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EcoFoG @ webmaster @ |
Serial |
564 |
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| Author |
Hamadi, A.; Borderies, P.; Albinet, C.; Koleck, T.; Villard, L.; Ho Tong Minh, D.; Le Toan, T.; Burban, B. |
| Title |
Temporal coherence of tropical forests at P-band: Dry and rainy seasons |
Type |
Journal Article |
| Year |
2015 |
Publication |
IEEE Geoscience and Remote Sensing Letters |
Abbreviated Journal |
IEEE Geosci. Remote Sens. Lett. |
| Volume |
12 |
Issue |
3 |
Pages |
557-561 |
| Keywords |
Biomass mission; forest scattering; ground-based experiment; P-band; range impulse response; temporal coherence |
| Abstract |
In this letter, the temporal coherence of tropical forest scattering at P-band is addressed by means of a ground-based experiment. The study is based on the TropiScat campaign in French Guiana, designed to support the Biomass mission, which will be the ESA 7th Earth Explorer mission. For Biomass, temporal coherence is a crucial parameter for coherent processing of polarimetric synthetic aperture radar (SAR) interferometry and SAR tomography in repeat-pass acquisitions. During the experiment, data were continuously collected for six months during both the rainy and dry seasons. For the rain-free days in both seasons, the coherence exhibits a daily cycle showing a high decorrelation during daytime, which is likely due to motion in the canopy. Up to a 20-day baseline, the coherence is much higher in the dry season than in the rainy season (> 0.8). From 20 to 40 days, it presents the same order of magnitude in both seasons [0.6, 0.7]. For larger temporal baselines, it becomes lower in the dry season. The results can be used to assess the long-term coherence of repeat-pass observations over a tropical forest. However, an extension of this study to several years and over other forest spots would be necessary to draw more general conclusions. |
| Address |
EcoFogKourou, France |
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Thesis |
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| Publisher |
Institute of Electrical and Electronics Engineers Inc. |
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Summary Language |
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Original Title |
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Abbreviated Series Title |
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Edition |
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1545598x (Issn) |
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| Notes |
Export Date: 21 October 2014; Correspondence Address: Hamadi, A.; Centre d'Etudes Spatiales de la BiosphèreFrance; Funding Details: ESA, European Space Agency |
Approved |
no |
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EcoFoG @ webmaster @ |
Serial |
563 |
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| Author |
Flores, O.; Herault, B.; Delcamp, M.; Garnier, É.; Gourlet-Fleury, S. |
| Title |
Functional traits help predict post-disturbance demography of tropical trees |
Type |
Journal Article |
| Year |
2014 |
Publication |
PLoS ONE |
Abbreviated Journal |
PLoS ONE |
| Volume |
9 |
Issue |
9 |
Pages |
e105022 |
| Keywords |
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| Abstract |
How tropical tree species respond to disturbance is a central issue of forest ecology, conservation and resource management. We define a hierarchical model to investigate how functional traits measured in control plots relate to the population change rate and to demographic rates for recruitment and mortality after disturbance by logging operations. Population change and demographic rates were quantified on a 12-year period after disturbance and related to seven functional traits measured in control plots. The model was calibrated using a Bayesian Network approach on 53 species surveyed in permanent forest plots (37.5 ha) at Paracou in French Guiana. The network analysis allowed us to highlight both direct and indirect relationships among predictive variables. Overall, 89% of interspecific variability in the population change rate after disturbance were explained by the two demographic rates, the recruitment rate being the most explicative variable. Three direct drivers explained 45% of the variability in recruitment rates, including leaf phosphorus concentration, with a positive effect, and seed size and wood density with negative effects. Mortality rates were explained by interspecific variability in maximum diameter only (25%). Wood density, leaf nitrogen concentration, maximum diameter and seed size were not explained by variables in the analysis and thus appear as independent drivers of post-disturbance demography. Relationships between functional traits and demographic parameters were consistent with results found in undisturbed forests. Functional traits measured in control conditions can thus help predict the fate of tropical tree species after disturbance. Indirect relationships also suggest how different processes interact to mediate species demographic response. |
| Address |
Centre d'Écologie Fonctionnelle et Évolutive, CNRS – UMR 5175Montpellier, France |
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Thesis |
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| Publisher |
Public Library of Science |
Place of Publication |
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Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
19326203 (Issn) |
ISBN |
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| Notes |
Export Date: 7 October 2014; Coden: Polnc; Correspondence Address: Flores, O.; Cirad – Université de la Réunion, UMR PVBMT, 7 chemin de l'IRAT, France |
Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial |
562 |
| Permanent link to this record |
