| Records |
| Author |
Dejean, A.; Petitclerc, F.; Azémar, F.; Pélozuelo, L.; Talaga, S.; Leponce, M.; Compin, A. |
| Title |
Aquatic life in Neotropical rainforest canopies: Techniques using artificial phytotelmata to study the invertebrate communities inhabiting therein |
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Journal Article |
| Year |
2018 |
Publication |
Comptes Rendus – Biologies |
Abbreviated Journal |
Comptes Rendus – Biologies |
| Volume |
341 |
Issue |
1 |
Pages |
20-27 |
| Keywords |
Artificial phytotelmata; Epiphytes; French Guiana; Invertebrate diversity; Neotropical rainforests |
| Abstract |
In Neotropical rainforest canopies, phytotelmata (“plant-held waters”) shelter diverse aquatic macroinvertebrate communities, including vectors of animal diseases. Studying these communities is difficult because phytotelmata are widely dispersed, hard to find from the ground and often inaccessible. We propose here a method for placing in tree crowns “artificial phytotelmata” whose size and shape can be tailored to different research targets. The efficacy of this method was shown while comparing the patterns of community diversity of three forest formations. We noted a difference between a riparian forest and a rainforest, whereas trees alongside a dirt road cutting through that rainforest corresponded to a subset of the latter. Because rarefied species richness was significantly lower when the phytotelmata were left for three weeks rather than for six or nine weeks, we recommend leaving the phytotelmata for twelve weeks to permit predators and phoretic species to fully establish themselves. |
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Export Date: 28 February 2018 |
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EcoFoG @ webmaster @ Dejean_etal2018 |
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795 |
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| Author |
Zhang, T.; Bai, S.L.; Zhang, Y.F.; Thibaut, B. |
| Title |
Viscoelastic properties of wood materials characterized by nanoindentation experiments |
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Journal Article |
| Year |
2012 |
Publication |
Wood Science and Technology |
Abbreviated Journal |
Wood Sci. Technol. |
| Volume |
46 |
Issue |
5 |
Pages |
1003-1016 |
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Springer-Verlag |
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0043-7719 |
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EcoFoG @ webmaster @ |
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465 |
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Djenontin Tindo, S.; Amusant, N.; Dangou, J.; Wotto, D.V.; Avlessi, F.; Dahouénon-Ahoussi, E.; Lozano, P.; Pioch, D.; Sohounhloué, K.C.D. |
| Title |
Screening of Repellent, Termiticidal and Preventive activities on Wood, of Azadirachta indica and Carapa procera (Meliaceae) seeds oils |
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Journal Article |
| Year |
2012 |
Publication |
International Research Journal of Biological Sciences |
Abbreviated Journal |
ISCA J. Biological Sci. |
| Volume |
1 |
Issue |
3 |
Pages |
25-29 |
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International Science Congress Association |
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EcoFoG @ webmaster @ |
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462 |
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Royer, M.; Stien, D.; Beauchene, J.; Herbette, G.; McLean, J.P.; Thibaut, A.; Thibaut, B. |
| Title |
Extractives of the tropical wood wallaba (Eperua falcata Aubl.) as natural anti-swelling agents |
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Journal Article |
| Year |
2010 |
Publication |
Holzforschung |
Abbreviated Journal |
Holzforschung |
| Volume |
64 |
Issue |
2 |
Pages |
211-215 |
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| Abstract |
Wallaba (Eperua falcata) is a tropical wood that is known to have naturally high moisture related dimensional stability. Samples of wallaba heartwood were subjected to differential solvent extraction. Wood pieces that were extracted with methanol showed significantly greater swelling following rehydration from oven dry to 96% relative humidity than non- extracted samples and samples extracted with other solvents. Methanol soluble wallaba heartwood extract was purified by HPLC and the compounds present were characterized by NMR spectroscopy. The structure of 13 compounds in methanol extract was identified. The relative proportion of polar compounds in methanol extract was found to be high. The compounds identified are proposed to bind to the polymeric cell wall by means of multiple hydrogen bonds restricting the association of water and therefore act as natural anti-swelling agents. |
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0018-3830 |
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WOS:000274423900010 |
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no |
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EcoFoG @ webmaster @ |
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307 |
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Boisse, P.; Aimene, Y.; Dogui, A.; Dridi, S.; Gatouillat, S.; Hamila, N.; Khan, M.A.; Mabrouki, T.; Morestin, F.; Vidal-Sallé, E. |
| Title |
Hypoelastic, hyperelastic, discrete and semi-discrete approaches for textile composite reinforcement forming |
Type |
Journal Article |
| Year |
2010 |
Publication |
International Journal of Material Forming |
Abbreviated Journal |
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| Volume |
3 |
Issue |
Supplement 2 |
Pages |
1229-1240 |
| Keywords |
Textile composites Forming simulations Continuous/discrete approaches Hyperelasticity Hypoelasticity Semi-discrete finite element |
| Abstract |
The clear multi-scale structure of composite textile reinforcements leads to develop continuous and discrete approaches for their forming simulations. In this paper two continuous modelling respectively based on a hypoelastic and hyperelastic constitutive model are presented. A discrete approach is also considered in which each yarn is modelled by shell finite elements and where the contact with friction and possible sliding between the yarns are taken into account. Finally the semi-discrete approach is presented in which the shell finite element interpolation involves continuity of the displacement field but where the internal virtual work is obtained as the sum of tension, in-plane shear and bending ones of all the woven unit cells within the element. The advantages and drawbacks of the different approaches are discussed. |
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Hypoelastic, hyperelastic, discrete and semi-discrete approaches for textile composite reinforcement forming |
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no |
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EcoFoG @ eric.marcon @ 8 |
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90 |
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| Author |
Vedel, V.; Arthur, W. |
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Character changes during the early post-embryonic development of the centipede Strigamia maritima (Leach, 1817) (Chilopoda: Geophilomorpha) |
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Journal Article |
| Year |
2009 |
Publication |
International Journal of Myriapodology |
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| Volume |
2 |
Issue |
1 |
Pages |
53-61 |
| Keywords |
MOULT DEVELOPMENT ARTHROPOD POST-EMBRYONIC STAGE MORPHOLOGICAL CHANGE MYRIAPOD CENTIPEDE EVO-DEVO |
| Abstract |
For many kinds of ecological, evolutionary and developmental study, it is important to be able to describe the life-history of the individuals of a particular species/population. In the case of myriapods and other arthropods, this involves separating the different life-history stages (or stadia or instars) that are separated by moults. However, it has recently been pointed out that in the earliest post-embryonic stages the cuticle is still quite flexible; this means that visible external developmental changes can occur between moults as well as during them. Here, we provide evidence for such inter-moult changes in the coastal geophilomorph centipede Strigamia maritima. The character states studied enable finer-scale resolution of early post-embryonic forms than was hitherto possible. Specifically, we describe five transitional forms during a period in which just two (Peripatoid and Foetus) have traditionally been recognized |
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Character changes during the early post-embryonic development of the centipede Strigamia maritima (Leach, 1817) (Chilopoda: Geophilomorpha); doi:10.1163/187525409X462412 |
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EcoFoG @ eric.marcon @ 13 |
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187 |
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Yamamoto, H.; Almeras, T. |
| Title |
A mathematical verification of the reinforced-matrix hypothesis using the Mori-Tanaka theory |
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Journal Article |
| Year |
2007 |
Publication |
Journal of Wood Science |
Abbreviated Journal |
J. Wood Sci. |
| Volume |
53 |
Issue |
6 |
Pages |
505-509 |
| Keywords |
Engineering |
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This article presents a theoretical verification of the reinforced-matrix hypothesis derived from tensor equations, σ W = σ f + σ m and ε W = ε f = ε m (Wood Sci Technol 32:171–182, 1998; Wood Sci Technol 33:311–325, 1999; J Biomech Eng 124:432–440, 2002), using classical Mori-Tanaka theory on the micromechanics of fiber-reinforced materials (Acta Metall 21:571–574, 1973; Micromechanics — dislcation and inclusions (in Japanese), pp 141–147, 1976). The Mori-Tanaka theory was applied to a small fragment of the cell wall undergoing changes in its physical state, such as those arising from sorption of moisture, maturation of wall components, or action of an external force, to obtain ⟨σ A⟩D = ϕ·⟨σ F⟩I + (1−ϕ)·⟨σ M⟩D−I. When the constitutive equation of each constituent material was applied to the equation ⟨σ A⟩D = ϕ·⟨σ F⟩I + (1−ϕ)·⟨σ M⟩D−I, the equations σ W = σ f + σ m and ε W = ε f = ε m were derived to lend support to the concept that two main phases, the reinforcing cellulose microfibril and the lignin-hemicellulose matrix, coexist in the same domain. The constitutive equations for the cell wall fragment were obtained without recourse to additional parameters such as Eshelby’s tensor S and Hill’s averaged concentration tensors AF and AM. In our previous articles, the coexistence of two main phases and σ W = σ f + σ m and ε W = ε f =ε m had been taken as our starting point to formulate the behavior of wood fiber with multilayered cell walls. The present article provides a rational explanation for both concepts. |
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Springer Japan |
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1435-0211 |
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no |
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EcoFoG @ eric.marcon @ |
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215 |
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Fouquet, A.; Dubut, V.; Hataway, R.; Scotti-Saintagne, C.; Scotti, I.; Noonan, B. |
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Isolation and characterisation of 19 microsatellite loci from the Amazonian frog Adenomera andreae (Amphibia: Anura: Leptodactylidae) |
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Journal Article |
| Year |
2009 |
Publication |
Conservation Genetics Resources |
Abbreviated Journal |
Conserv. Genet. Res. |
| Volume |
1 |
Issue |
1 |
Pages |
217-220 |
| Keywords |
Biomedicine |
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Nineteen novel microsatellite loci were isolated from Adenomera andreae, a widespread Amazonian frog considered to be a species complex. Three multiplex kits were optimized. Genetic diversity was assessed in 66 individuals sampled in three populations along the West of the Approuague River catchment (French Guiana). We also tested the multiplex kits in four other Adenomera and nine Leptodactylus species with 43.4 and 17.5% success respectively. |
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Springer Netherlands |
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1877-7252 |
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no |
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EcoFoG @ eric.marcon @ |
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185 |
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Leroy, C.; Corbara, B.; Dejean, A.; Céréghino, R. |
| Title |
Potential sources of nitrogen in an ant-garden tank-bromeliad |
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Journal Article |
| Year |
2009 |
Publication |
Plant Signaling and Behavior |
Abbreviated Journal |
Plant. Signal. Behav. |
| Volume |
4 |
Issue |
9 |
Pages |
868-870 |
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Aechmea mertensii Camponotus femoratus nitrogen nitrogen stable isotope Pachycondyla goeldii plant-insect interactions phytotelmata |
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Epiphytic plants in general and bromeliads in particular live in a water and nutrient-stressed environment often limited in nitrogen. Thus, these plants have developed different ways to survive in such an environment. We focused on Aechmea mertensii (Bromeliaceae), which is both a tank-bromeliad and an ant-garden (AG) epiphyte initiated by either the ants Camponotus femoratus or Pachycondyla goeldii. By combining a study of plant morphology and physiology associated with aquatic insect biology, we demonstrate that the ant species influences the leaf structure of the bromeliad, the structure of the aquatic community in its tank, and nutrient assimilation by the leaves. Based on nitrogen and nitrogen stable isotope measurements of the A. mertensii leaves, the leaf litter inside of the tank and the root-embedded carton nest, we discuss the potential sources of available nitrogen for the plant based on the ant partner. We demonstrate the existence of a complex ant-plant interaction that subsequently affects the biodiversity of a broader range of organisms that are themselves likely to influence nutrient assimilation by the A. mertensii leaves in a kind of plant-invertebrate-plant feedback loop. |
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Potential sources of nitrogen in an ant-garden tank-bromeliad |
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EcoFoG @ eric.marcon @ 12 |
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186 |
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Gonzalez, M.A.; Baraloto, C.; Engel, J.; Mori, S.A.; Petronelli, P.; Riera, B.; Roger, A.; Thebaud, C.; Chave, J. |
| Title |
Identification of Amazonian Trees with DNA Barcodes |
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Journal Article |
| Year |
2009 |
Publication |
PLoS One |
Abbreviated Journal |
PLoS One |
| Volume |
4 |
Issue |
10 |
Pages |
e7483 |
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Background: Large-scale plant diversity inventories are critical to develop informed conservation strategies. However, the workload required for classic taxonomic surveys remains high and is particularly problematic for megadiverse tropical forests. Methodology/Principal Findings: Based on a comprehensive census of all trees in two hectares of a tropical forest in French Guiana, we examined whether plant DNA barcoding could contribute to increasing the quality and the pace of tropical plant biodiversity surveys. Of the eight plant DNA markers we tested (rbcLa, rpoC1, rpoB, matK, ycf5, trnL, psbA-trnH, ITS), matK and ITS had a low rate of sequencing success. More critically, none of the plastid markers achieved a rate of correct plant identification greater than 70%, either alone or combined. The performance of all barcoding markers was noticeably low in few species-rich clades, such as the Laureae, and the Sapotaceae. A field test of the approach enabled us to detect 130 molecular operational taxonomic units in a sample of 252 juvenile trees. Including molecular markers increased the identification rate of juveniles from 72% (morphology alone) to 96% (morphology and molecular) of the individuals assigned to a known tree taxon. Conclusion/Significance: We conclude that while DNA barcoding is an invaluable tool for detecting errors in identifications and for identifying plants at juvenile stages, its limited ability to identify collections will constrain the practical implementation of DNA-based tropical plant biodiversity programs. |
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PUBLIC LIBRARY SCIENCE |
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1932-6203 |
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ISI:000270880700009 |
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EcoFoG @ eric.marcon @ |
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189 |
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