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Houadria, M.; Salas-Lopez, A.; Orivel, J.; Blüthgen, N.; Menzel, F. |
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Dietary and Temporal Niche Differentiation in Tropical Ants-Can They Explain Local Ant Coexistence? |
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2015 |
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Biotropica |
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Biotropica |
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47 |
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2 |
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208-217 |
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Ants; Baiting; Dietary specialization; Functional traits; Niche breadth; Partitioning; Temporal distribution |
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How species with similar ecological requirements avoid competitive exclusion remains contentious, especially in the species-rich tropics. Niche differentiation has been proposed as a major mechanism for species coexistence. However, different niche dimensions must be studied simultaneously to assess their combined effects on diversity and composition of a community. In most terrestrial ecosystems, ants are among the most abundant and ubiquitous animals. Since they display direct, aggressive competition and often competitively displace subordinate species from resources, niche differentiation may be especially relevant among ants. We studied temporal and trophic niche differentiation in a ground ant community in a forest fragment in French Guiana. Different baits were presented during day and night to assess the temporal and dietary niches of the local species. They represented natural food resources such as sugars, carrion, excrements, seeds, and live prey. In addition, pitfalls provided a background measure of ant diversity. The communities attracted to the different baits significantly differed from each other, and even less attractive baits yielded additional species. We detected species specialized on living grasshoppers, sucrose, seeds, or dead insects. Community-level differences between day and night were larger than those between baits, and many species were temporally specialized. In contrast to commonness, foraging efficiency of species was correlated to food specialization. We conclude that many ant species occupy different temporal or dietary niches. However, for many generalized species, the dietary, and temporal niche differentiation brought forward through our sampling effort, cannot alone explain their coexistence. |
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Department of Biology, Technical University of DarmstadtDarmstadt, Germany |
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Export Date: 17 March 2015 |
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EcoFoG @ webmaster @ |
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585 |
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Houel, E.; Bertani, S.; Bourdy, G.; Deharo, E.; Jullian, V.; Valentin, A.; Chevalley, S.; Stien, D. |
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Quassinoid constituents of Quassia amara L. leaf herbal tea. Impact on its antimalarial activity and cytotoxicity |
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Journal Article |
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2009 |
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Journal of Ethnopharmacology |
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J. Ethnopharmacol. |
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126 |
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1 |
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114-118 |
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Quassia amara L.; Simaroubaceae; Leaf tea; Antimalarial activity; Cytotoxicity; Simalikalactone D |
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Aim of the study: Our objective was to assess whether it could be contemplated to recommend Quassia amara young leaf tea for treatment against malaria. and if yes. set up a standard protocol for preparing the herbal tea. Materials and methods: The leaf tea was extracted with methylene chloride and the organic extract was fractionated with HPLC. Pure compounds were characterized and their in vitro cytotoxicity and antiplasmodial activity was determined. Results and discussion: We discovered that antimalarial Quassia amara young leaf tea contains several quassinoids: simalikalactone D (SkD. 1), picrasin B (2). picrasin H (3), neoquassin (4), quassin (5), picrasin 1(6) and picrasin J (7). These last two compounds are new. In addition. our experiments demonstrate that both biological activity and cytotoxicity of the remedy may be attributed solely to the presence of SkD. Conclusion: In conclusion, this preparation Should not be recommended for treatment of malaria until a clinical Study in humans is performed with SkD. (C) 2009 Elsevier Ireland Ltd. All rights reserved |
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[Stien, Didier] Univ Antilles Guyane, CNRS, UMR Ecofog, Inst Enseignement Super Guyane, F-97337 Cayenne, France, Email: didier.stien@guyane.cnrs.fr |
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ELSEVIER IRELAND LTD |
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Houel, E.; Fleury, M.; Odonne, G.; Nardella, F.; Bourdy, G.; Vonthron-Sénécheau, C.; Villa, P.; Obrecht, A.; Eparvier, V.; Deharo, E.; Stien, D. |
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Antiplasmodial and anti-inflammatory effects of an antimalarial remedy from the Wayana Amerindians, French Guiana: Takamalaimë (Psidium acutangulum Mart. ex DC., Myrtaceae) |
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2015 |
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Journal of Ethnopharmacology |
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166 |
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279-285 |
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Psidium acutangulum; Plasmodium; Cytokines; Antimalarial; French Guiana; Traditional medicine |
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Ethnopharmacological relevance:
Field investigations highlighted the use of Psidium acutangulum Mart. ex DC (syn. P. persoonii McVaugh), a small tree used by the Wayana Amerindians in Twenke–Taluhwen and Antecume–Pata, French Guiana, for the treatment of malaria, and administered either orally in the form of a decoction or applied externally over the whole body. This use appears limited to the Wayana cultural group in French Guiana and has never been reported anywhere else. Our goal was to evaluate the antimalarial and anti-inflammatory activities of a P. acutangulum decoction to explain the good reputation of this remedy.
Materials and methods:
Interviews with the Wayana inhabitants of Twenke–Taluhwen and Antecume–Pata were conducted within the TRAMAZ project according to the TRAMIL methodology, which is based on a quantitative and qualitative analysis of medicinal plant uses. A decoction of dried aerial parts of P. acutangulum was prepared in consistency with the Wayana recipe. In vitro antiplasmodial assays were performed on chloroquine-resistant FcB1 ([3H]-hypoxanthine bioassay) and 7G8 (pLDH bioassay) P. falciparum strains and on chloroquine sensitive NF54 ([3H]-hypoxanthine bioassay) P. falciparum strain. In vitro anti-inflammatory activity (IL-1β, IL-6, IL-8, TNFα) was evaluated on LPS-stimulated human PBMC and NO secretion inhibition was measured on LPS stimulated RAW murine macrophages. Cytotoxicity of the decoction was measured on L6 mammalian cells, PBMCs, and RAW cells. A preliminary evaluation of the in vivo antimalarial activity of the decoction, administered orally twice daily, was assessed by the classical four-day suppressive test against P. berghei NK65 in mice.
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The decoction displayed a good antiplasmodial activity in vitro against the three tested strains, regardless to the bioassay used, with IC50 values of 3.3 µg/mL and 10.3 µg/mL against P. falciparum FcB1 and NF54, respectively and 19.0 µg/mL against P. falciparum 7G8. It also exhibited significant anti-inflammatory activity in vitro in a dose dependent manner. At a concentration of 50 µg/mL, the decoction inhibited the secretion of the following pro-inflammatory cytokines: TNFα (−18%), IL-1β (−58%), IL-6 (−32%), IL-8 (−21%). It also exhibited a mild NO secretion inhibition (−13%) at the same concentration. The decoction was non-cytotoxic against L6 cells (IC50>100 µg/mL), RAW cells and PBMC. In vivo, 150 µL of the decoction given orally twice a day (equivalent to 350 mg/kg/day of dried extract) inhibited 39.7% average parasite growth, with more than 50% of inhibition in three mice over five. The absence of response for the two remaining mice, however, induced a strong standard deviation.
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This study highlighted the in vitro antiplasmodial activity of the decoction of P. acutangulum aerial parts, used by Wayana Amerindians from the Upper-Maroni in French Guiana in case of malaria. Its antioxidant and anti-inflammatory potential, which may help to explain its use against this disease, was demonstrated using models of artificially stimulated cells. |
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649 |
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Houel, E.; Gonzalez, G.; Bessière, J.-M.; Odonne, G.; Eparvier, V.; Deharo, E.; Stien, D. |
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Therapeutic switching: From antidermatophytic essential oils to new leishmanicidal products |
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2015 |
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Memorias do Inst. Oswaldo Cruz |
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110 |
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1 |
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106-113 |
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Antifungal agents; Antiparasitic agents; Leishmania; Peritoneal macrophages – sesquiterpenes; Therapeutic switching |
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This study examined whether the antidermatophytic activity of essential oils (EOs) can be used as an indicator for the discovery of active natural products against Leishmania amazonensis. The aerial parts of seven plants were hydrodistilled. Using broth microdilution techniques, the obtained EOs were tested against three strains of dermatophytes (Trichophyton mentagrophytes, Microsporum gypseum and Microsporum canis). To compare the EOs antifungal and antiparasitic effects, the EOs activities against axenic amastigotes of L. amazonensis were concurrently evaluated. For the most promising EOs, their antileishmanial activities against parasites infecting peritoneal macrophages of BALB/c mice were measured. The most interesting antifungal candidates were the EOs from Cymbopogon citratus, Otacanthus azureus and Protium heptaphyllum, whereas O. azureus, Piper hispidum and P. heptaphyllum EOs exhibited the lowest 50% inhibitory concentration (IC50) values against axenic amastigotes, thus revealing a certain correspondence between both activities. The P. hispidum EO was identified as the most promising product in the results from the infected macrophages model (IC50: 4.7 μg/mL, safety index: 8). The most abundant compounds found in this EO were sesquiterpenes, notably curzerene and furanodiene. Eventually, the evaluation of the antidermatophytic activity of EOs appears to be an efficient method for identifying new potential drugs for the treatment of L. amazonensis. |
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Export Date: 17 March 2015 |
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Houel, E.; Nardella, F.; Jullian, V.; Valentin, A.; Vonthron-Sénécheau, C.; Villa, P.; Obrecht, A.; Kaiser, M.; Bourreau, E.; Odonne, G.; Fleury, M.; Bourdy, G.; Eparvier, V.; Deharo, E.; Stien, D. |
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Wayanin and guaijaverin, two active metabolites found in a Psidium acutangulum Mart. ex DC (syn. P. persoonii McVaugh) (Myrtaceae) antimalarial decoction from the Wayana Amerindians |
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2016 |
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Journal of Ethnopharmacology |
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Journal of Ethnopharmacology |
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187 |
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241-248 |
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Antimalarial; Cytokines; French guiana; Glycosylated flavonols; Psidium acutangulum; Traditional remedy |
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Ethnopharmacological relevance Psidium acutangulum Mart. ex DC is a small tree used by the Wayana Amerindians from the Upper-Maroni in French Guiana for the treatment of malaria. Aim of the study In a previous study, we highlighted the in vitro antiplasmodial, antioxidant and anti-inflammatory potential of the traditional decoction of P. acutangulum aerial parts. Our goal was then to investigate on the origin of the biological activity of the traditional remedy, and eventually characterize active constituents. Materials and methods Liquid-liquid extractions were performed on the decoction, and the antiplasmodial activity evaluated against chloroquine-resistant FcB1 ([3H]-hypoxanthine bioassay) and 7G8 (pLDH bioassay) P. falciparum strains, and on a chloroquine sensitive NF54 ([3H]-hypoxanthine bioassay) P. falciparum strain. The ethyl acetate fraction (D) was active and underwent bioguided fractionation. All the isolated compounds were tested on P. falciparum FcB1 strain. In vitro anti-inflammatory activity (IL-1β, IL-6, IL-8, TNFα) of the ethyl acetate fraction and of an anti-Plasmodium active compound, was concurrently assessed on LPS-stimulated human PBMC and NO secretion inhibition was measured on LPS stimulated RAW murine macrophages. Cytotoxicity of the fractions and pure compounds was measured on VERO cells, L6 mammalian cells, PBMCs, and RAW cells. Results Fractionation of the ethyl acetate soluble fraction (IC50 ranging from 3.4 to <1 μg/mL depending on the parasite strain) led to the isolation of six pure compounds: catechin and five glycosylated quercetin derivatives. These compounds have never been isolated from this plant species. Two of these compounds (wayanin and guaijaverin) were found to be moderately active against P. falciparum FcB1 in vitro (IC50 5.5 and 6.9 μM respectively). We proposed the name wayanin during public meetings organized in June 2015 in the Upper-Maroni villages, in homage to the medicinal knowledge of the Wayana population. At 50 μg/mL, the ethyl acetate fraction (D) significantly inhibited IL-1β secretion (-46%) and NO production (-21%), as previously observed for the decoction. The effects of D and guiajaverin (4) on the secretion of other cytokines or NO production were not significant. Conclusions The confirmed antiplasmodial activity of the ethyl acetate soluble fraction of the decoction and of the isolated compounds support the previous results obtained on the P. acutangulum decoction. The antiplasmodial activity might be due to a mixture of moderately active non-toxic flavonoids. The anti-inflammatory activities were less marked for ethyl acetate fraction (D) than for the decoction. © 2016 Elsevier Ireland Ltd. All rights reserved. |
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Sorbonne Universités, UPMC Univ Paris 06, CNRS, Laboratoire de Biodiversité et Biotechnologies Microbiennes (LBBM), Observatoire Océanologique, Banyuls/Mer, France |
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Export Date: 20 May 2016 |
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679 |
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Houel, E.; Rodrigues, A.M.S.; Jahn-Oyac, A.; Bessière, J.-M.; Eparvier, V.; Deharo, E.; Stien, D. |
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In vitro antidermatophytic activity of Otacanthus azureus (Linden) Ronse essential oil alone and in combination with azoles |
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2014 |
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Journal of Applied Microbiology |
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J. Appl. Microbiol. |
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116 |
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2 |
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288-294 |
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Antifungal activity; Azoles; Dermatophytes; Essential oil; Otacanthus azureus; Synergy |
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Aims: We determined the chemical composition and investigated the antifungal activity of Otacanthus azureus (Linden) Ronse essential oil (EO) against a range of dermatophytes alone or in combination with azole antifungals. Methods and Results: Aerial parts of the plant were steam-distilled and the obtained oil was analysed by gas chromatography/mass spectrometry and 1H-NMR. It was shown to be largely composed of sesquiterpenes, with the main component being β-copaen-4-α-ol. Using broth microdilution techniques, this oil was found to have remarkable in vitro antifungal activities. Minimum inhibitory concentrations as low as 4 μg ml-1 were recorded. The analysis of the combined effect of the O. azureus EO with azoles using chequerboard assays revealed a synergism between the EO and ketoconazole, fluconazole or itraconazole against Trichophyton mentagrophytes. Notably, the O. azureus essential oil showed low cytotoxicity to VERO cells. Conclusions: The O. azureus essential oil alone or in combination with azoles is a promising antifungal agent in the treatment for human dermatomycoses caused by filamentous fungi. Significance and Impact of the Study: There is much interest in the study of essential oils for the discovery of new antimicrobial drugs. This study has highlighted the antidermatophytic activity of the O. azureus EO. © 2013 The Society for Applied Microbiology. |
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Institut de Recherche pour le Développement (IRD), UMR 152 Pharma-DEV, Toulouse, France |
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Export Date: 9 February 2014; Source: Scopus; Coden: Jamif; Language of Original Document: English; Correspondence Address: Houël, E.; CNRS – UMR Ecologie des Forêts de Guyane (EcoFoG), Institut Pasteur de la Guyane, 23 Avenue Pasteur, BP6010, 97306 Cayenne Cedex, French Guiana; email: emeline.houel@ecofog.gf |
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Hudson, L.N.; Newbold, T.; Contu, S.; Hill, S.L.L.; Lysenko, I.; De Palma, A.; Phillips, H.R.P.; Alhusseini, T.I.; Bedford, F.E.; Bennett, D.J.; Booth, H.; Burton, V.J.; Chng, C.W.T.; Choimes, A.; Correia, D.L.P.; Day, J.; Echeverría-Londoño, S.; Emerson, S.R.; Gao, D.; Garon, M.; Harrison, M.L.K.; Ingram, D.J.; Jung, M.; Kemp, V.; Kirkpatrick, L.; Martin, C.D.; Pan, Y.; Pask-Hale, G.D.; Pynegar, E.L.; Robinson, A.N.; Sanchez-Ortiz, K.; Senior, R.A.; Simmons, B.I.; White, H.J.; Zhang, H.; Aben, J.; Abrahamczyk, S.; Adum, G.B.; Aguilar-Barquero, V.; Aizen, M.A.; Albertos, B.; Alcala, E.L.; del Mar Alguacil, M.; Alignier, A.; Ancrenaz, M.; Andersen, A.N.; Arbeláez-Cortés, E.; Armbrecht, I.; Arroyo-Rodríguez, V.; Aumann, T.; Axmacher, J.C.; Azhar, B.; Azpiroz, A.B.; Baeten, L.; Bakayoko, A.; Báldi, A.; Banks, J.E.; Baral, S.K.; Barlow, J.; Barratt, B.I.P.; Barrico, L.; Bartolommei, P.; Barton, D.M.; Basset, Y.; Batáry, P.; Bates, A.J.; Baur, B.; Bayne, E.M.; Beja, P.; Benedick, S.; Berg, Å.; Bernard, H.; Berry, N.J.; Bhatt, D.; Bicknell, J.E.; Bihn, J.H.; Blake, R.J.; Bobo, K.S.; Bóçon, R.; Boekhout, T.; Böhning-Gaese, K.; Bonham, K.J.; Borges, P.A.V.; Borges, S.H.; Boutin, C.; Bouyer, J.; Bragagnolo, C.; Brandt, J.S.; Brearley, F.Q.; Brito, I.; Bros, V.; Brunet, J.; Buczkowski, G.; Buddle, C.M.; Bugter, R.; Buscardo, E.; Buse, J.; Cabra-García, J.; Cáceres, N.C.; Cagle, N.L.; Calviño-Cancela, M.; Cameron, S.A.; Cancello, E.M.; Caparrós, R.; Cardoso, P.; Carpenter, D.; Carrijo, T.F.; Carvalho, A.L.; Cassano, C.R.; Castro, H.; Castro-Luna, A.A.; Rolando, C.B.; Cerezo, A.; Chapman, K.A.; Chauvat, M.; Christensen, M.; Clarke, F.M.; Cleary, D.F.R.; Colombo, G.; Connop, S.P.; Craig, M.D.; Cruz-López, L.; Cunningham, S.A.; D'Aniello, B.; D'Cruze, N.; da Silva, P.G.; Dallimer, M.; Danquah, E.; Darvill, B.; Dauber, J.; Davis, A.L.V.; Dawson, J.; de Sassi, C.; de Thoisy, B.; Deheuvels, O.; Dejean, A.; Devineau, J.-L.; Diekötter, T.; Dolia, J.V.; Domínguez, E.; Dominguez-Haydar, Y.; Dorn, S.; Draper, I.; Dreber, N.; Dumont, B.; Dures, S.G.; Dynesius, M.; Edenius, L.; Eggleton, P.; Eigenbrod, F.; Elek, Z.; Entling, M.H.; Esler, K.J.; de Lima, R.F.; Faruk, A.; Farwig, N.; Fayle, T.M.; Felicioli, A.; Felton, A.M.; Fensham, R.J.; Fernandez, I.C.; Ferreira, C.C.; Ficetola, G.F.; Fiera, C.; Filgueiras, B.K.C.; Fırıncıoğlu, H.K.; Flaspohler, D.; Floren, A.; Fonte, S.J.; Fournier, A.; Fowler, R.E.; Franzén, M.; Fraser, L.H.; Fredriksson, G.M.; Freire, G.B., Jr.; Frizzo, T.L.M.; Fukuda, D.; Furlani, D.; Gaigher, R.; Ganzhorn, J.U.; García, K.P.; Garcia-R, J.C.; Garden, J.G.; Garilleti, R.; Ge, B.-M.; Gendreau-Berthiaume, B.; Gerard, P.J.; Gheler-Costa, C.; Gilbert, B.; Giordani, P.; Giordano, S.; Golodets, C.; Gomes, L.G.L.; Gould, R.K.; Goulson, D.; Gove, A.D.; Granjon, L.; Grass, I.; Gray, C.L.; Grogan, J.; Gu, W.; Guardiola, M.; Gunawardene, N.R.; Gutierrez, A.G.; Gutiérrez-Lamus, D.L.; Haarmeyer, D.H.; Hanley, M.E.; Hanson, T.; Hashim, N.R.; Hassan, S.N.; Hatfield, R.G.; Hawes, J.E.; Hayward, M.W.; Hébert, C.; Helden, A.J.; Henden, J.-A.; Henschel, P.; Hernández, L.; Herrera, J.P.; Herrmann, F.; Herzog, F.; Higuera-Diaz, D.; Hilje, B.; Höfer, H.; Hoffmann, A.; Horgan, F.G.; Hornung, E.; Horváth, R.; Hylander, K.; Isaacs-Cubides, P.; Ishida, H.; Ishitani, M.; Jacobs, C.T.; Jaramillo, V.J.; Jauker, B.; Hernández, F.J.; Johnson, M.F.; Jolli, V.; Jonsell, M.; Juliani, S.N.; Jung, T.S.; Kapoor, V.; Kappes, H.; Kati, V.; Katovai, E.; Kellner, K.; Kessler, M.; Kirby, K.R.; Kittle, A.M.; Knight, M.E.; Knop, E.; Kohler, F.; Koivula, M.; Kolb, A.; Kone, M.; Kőrösi, Á.; Krauss, J.; Kumar, A.; Kumar, R.; Kurz, D.J.; Kutt, A.S.; Lachat, T.; Lantschner, V.; Lara, F.; Lasky, J.R.; Latta, S.C.; Laurance, W.F.; Lavelle, P.; Le Féon, V.; LeBuhn, G.; Légaré, J.-P.; Lehouck, V.; Lencinas, M.V.; Lentini, P.E.; Letcher, S.G.; Li, Q.; Litchwark, S.A.; Littlewood, N.A.; Liu, Y.; Lo-Man-Hung, N.; López-Quintero, C.A.; Louhaichi, M.; Lövei, G.L.; Lucas-Borja, M.E.; Luja, V.H.; Luskin, M.S.; MacSwiney G, M.C.; Maeto, K.; Magura, T.; Mallari, N.A.; Malone, L.A.; Malonza, P.K.; Malumbres-Olarte, J.; Mandujano, S.; Måren, I.E.; Marin-Spiotta, E.; Marsh, C.J.; Marshall, E.J.P.; Martínez, E.; Martínez Pastur, G.; Moreno Mateos, D.; Mayfield, M.M.; Mazimpaka, V.; McCarthy, J.L.; McCarthy, K.P.; McFrederick, Q.S.; McNamara, S.; Medina, N.G.; Medina, R.; Mena, J.L.; Mico, E.; Mikusinski, G.; Milder, J.C.; Miller, J.R.; Miranda-Esquivel, D.R.; Moir, M.L.; Morales, C.L.; Muchane, M.N.; Muchane, M.; Mudri-Stojnic, S.; Munira, A.N.; Muoñz-Alonso, A.; Munyekenye, B.F.; Naidoo, R.; Naithani, A.; Nakagawa, M.; Nakamura, A.; Nakashima, Y.; Naoe, S.; Nates-Parra, G.; Navarrete Gutierrez, D.A.; Navarro-Iriarte, L.; Ndang'ang'a, P.K.; Neuschulz, E.L.; Ngai, J.T.; Nicolas, V.; Nilsson, S.G.; Noreika, N.; Norfolk, O.; Noriega, J.A.; Norton, D.A.; Nöske, N.M.; Nowakowski, A.J.; Numa, C.; O'Dea, N.; O'Farrell, P.J.; Oduro, W.; Oertli, S.; Ofori-Boateng, C.; Oke, C.O.; Oostra, V.; Osgathorpe, L.M.; Otavo, S.E.; Page, N.V.; Paritsis, J.; Parra-H, A.; Parry, L.; Pe'er, G.; Pearman, P.B.; Pelegrin, N.; Pélissier, R.; Peres, C.A.; Peri, P.L.; Persson, A.S.; Petanidou, T.; Peters, M.K.; Pethiyagoda, R.S.; Phalan, B.; Philips, T.K.; Pillsbury, F.C.; Pincheira-Ulbrich, J.; Pineda, E.; Pino, J.; Pizarro-Araya, J.; Plumptre, A.J.; Poggio, S.L.; Politi, N.; Pons, P.; Poveda, K.; Power, E.F.; Presley, S.J.; Proença, V.; Quaranta, M.; Quintero, C.; Rader, R.; Ramesh, B.R.; Ramirez-Pinilla, M.P.; Ranganathan, J.; Rasmussen, C.; Redpath-Downing, N.A.; Reid, J.L.; Reis, Y.T.; Rey Benayas, J.M.; Rey-Velasco, J.C.; Reynolds, C.; Ribeiro, D.B.; Richards, M.H.; Richardson, B.A.; Richardson, M.J.; Ríos, R.M.; Robinson, R.; Robles, C.A.; Römbke, J.; Romero-Duque, L.P.; Rös, M.; Rosselli, L.; Rossiter, S.J.; Roth, D.S.; Roulston, T.H.; Rousseau, L.; Rubio, A.V.; Ruel, J.-C.; Sadler, J.P.; Sáfián, S.; Saldaña-Vázquez, R.A.; Sam, K.; Samnegård, U.; Santana, J.; Santos, X.; Savage, J.; Schellhorn, N.A.; Schilthuizen, M.; Schmiedel, U.; Schmitt, C.B.; Schon, N.L.; Schüepp, C.; Schumann, K.; Schweiger, O.; Scott, D.M.; Scott, K.A.; Sedlock, J.L.; Seefeldt, S.S.; Shahabuddin, G.; Shannon, G.; Sheil, D.; Sheldon, F.H.; Shochat, E.; Siebert, S.J.; Silva, F.A.B.; Simonetti, J.A.; Slade, E.M.; Smith, J.; Smith-Pardo, A.H.; Sodhi, N.S.; Somarriba, E.J.; Sosa, R.A.; Soto Quiroga, G.; St-Laurent, M.-H.; Starzomski, B.M.; Stefanescu, C.; Steffan-Dewenter, I.; Stouffer, P.C.; Stout, J.C.; Strauch, A.M.; Struebig, M.J.; Su, Z.; Suarez-Rubio, M.; Sugiura, S.; Summerville, K.S.; Sung, Y.-H.; Sutrisno, H.; Svenning, J.-C.; Teder, T.; Threlfall, C.G.; Tiitsaar, A.; Todd, J.H.; Tonietto, R.K.; Torre, I.; Tóthmérész, B.; Tscharntke, T.; Turner, E.C.; Tylianakis, J.M.; Uehara-Prado, M.; Urbina-Cardona, N.; Vallan, D.; Vanbergen, A.J.; Vasconcelos, H.L.; Vassilev, K.; Verboven, H.A.F.; Verdasca, M.J.; Verdú, J.R.; Vergara, C.H.; Vergara, P.M.; Verhulst, J.; Virgilio, M.; Vu, L.V.; Waite, E.M.; Walker, T.R.; Wang, H.-F.; Wang, Y.; Watling, J.I.; Weller, B.; Wells, K.; Westphal, C.; Wiafe, E.D.; Williams, C.D.; Willig, M.R.; Woinarski, J.C.Z.; Wolf, J.H.D.; Wolters, V.; Woodcock, B.A.; Wu, J.; Wunderle, J.M., Jr.; Yamaura, Y.; Yoshikura, S.; Yu, D.W.; Zaitsev, A.S.; Zeidler, J.; Zou, F.; Collen, B.; Ewers, R.M.; Mace, G.M.; Purves, D.W.; Scharlemann, J.P.W.; Purvis, A. |
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Title |
The database of the PREDICTS (Projecting Responses of Ecological Diversity In Changing Terrestrial Systems) project |
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Journal Article |
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2017 |
Publication |
Ecology and Evolution |
Abbreviated Journal |
Ecology and Evolution |
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7 |
Issue |
1 |
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145-188 |
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data sharing; global biodiversity modeling; global change; habitat destruction; land use |
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The PREDICTS project—Projecting Responses of Ecological Diversity In Changing Terrestrial Systems (www.predicts.org.uk)—has collated from published studies a large, reasonably representative database of comparable samples of biodiversity from multiple sites that differ in the nature or intensity of human impacts relating to land use. We have used this evidence base to develop global and regional statistical models of how local biodiversity responds to these measures. We describe and make freely available this 2016 release of the database, containing more than 3.2 million records sampled at over 26,000 locations and representing over 47,000 species. We outline how the database can help in answering a range of questions in ecology and conservation biology. To our knowledge, this is the largest and most geographically and taxonomically representative database of spatial comparisons of biodiversity that has been collated to date; it will be useful to researchers and international efforts wishing to model and understand the global status of biodiversity. © 2016 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. |
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Computational Ecology and Environmental Science, Microsoft Research, Cambridge, United Kingdom |
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Export Date: 17 January 2017 |
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EcoFoG @ webmaster @ |
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705 |
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Hudson, L.N.; Newbold, T.; Contu, S.; Hill, S.L.L.; Lysenko, I.; De Palma, A.; Phillips, H.R.P.; Senior, R.A.; Bennett, D.J.; Booth, H.; Choimes, A.; Correia, D.L.P.; Day, J.; Echeverría-Londoño, S.; Garon, M.; Harrison, M.L.K.; Ingram, D.J.; Jung, M.; Kemp, V.; Kirkpatrick, L.; Martin, C.D.; Pan, Y.; White, H.J.; Aben, J.; Abrahamczyk, S.; Adum, G.B.; Aguilar-Barquero, V.; Aizen, M.A.; Ancrenaz, M.; Arbeláez-Cortés, E.; Armbrecht, I.; Azhar, B.; Azpiroz, A.B.; Baeten, L.; Báldi, A.; Banks, J.E.; Barlow, J.; Batáry, P.; Bates, A.J.; Bayne, E.M.; Beja, P.; Berg, A.; Berry, N.J.; Bicknell, J.E.; Bihn, J.H.; Böhning-Gaese, K.; Boekhout, T.; Boutin, C.; Bouyer, J.; Brearley, F.Q.; Brito, I.; Brunet, J.; Buczkowski, G.; Buscardo, E.; Cabra-García, J.; Calviño-Cancela, M.; Cameron, S.A.; Cancello, E.M.; Carrijo, T.F.; Carvalho, A.L.; Castro, H.; Castro-Luna, A.A.; Cerda, R.; Cerezo, A.; Chauvat, M.; Clarke, F.M.; Cleary, D.F.R.; Connop, S.P.; D'Aniello, B.; da Silva, P.G.; Darvill, B.; Dauber, J.; Dejean, A.; Diekötter, T.; Dominguez-Haydar, Y.; Dormann, C.F.; Dumont, B.; Dures, S.G.; Dynesius, M.; Edenius, L.; Elek, Z.; Entling, M.H.; Farwig, N.; Fayle, T.M.; Felicioli, A.; Felton, A.M.; Ficetola, G.F.; Filgueiras, B.K.C.; Fonte, S.J.; Fraser, L.H.; Fukuda, D.; Furlani, D.; Ganzhorn, J.U.; Garden, J.G.; Gheler-Costa, C.; Giordani, P.; Giordano, S.; Gottschalk, M.S.; Goulson, D.; Gove, A.D.; Grogan, J.; Hanley, M.E.; Hanson, T.; Hashim, N.R.; Hawes, J.E.; Hébert, C.; Helden, A.J.; Henden, J.-A.; Hernández, L.; Herzog, F.; Higuera-Diaz, D.; Hilje, B.; Horgan, F.G.; Horváth, R.; Hylander, K.; Isaacs-Cubides, P.; Ishitani, M.; Jacobs, C.T.; Jaramillo, V.J.; Jauker, B.; Jonsell, M.; Jung, T.S.; Kapoor, V.; Kati, V.; Katovai, E.; Kessler, M.; Knop, E.; Kolb, A.; Korösi, Á.; Lachat, T.; Lantschner, V.; Le Féon, V.; Lebuhn, G.; Légaré, J.-P.; Letcher, S.G.; Littlewood, N.A.; López-Quintero, C.A.; Louhaichi, M.; Lövei, G.L.; Lucas-Borja, M.E.; Luja, V.H.; Maeto, K.; Magura, T.; Mallari, N.A.; Marin-Spiotta, E.; Marshall, E.J.P.; Martínez, E.; Mayfield, M.M.; Mikusinski, G.; Milder, J.C.; Miller, J.R.; Morales, C.L.; Muchane, M.N.; Muchane, M.; Naidoo, R.; Nakamura, A.; Naoe, S.; Nates-Parra, G.; Navarrete Gutierrez, D.A.; Neuschulz, E.L.; Noreika, N.; Norfolk, O.; Noriega, J.A.; Nöske, N.M.; O'Dea, N.; Oduro, W.; Ofori-Boateng, C.; Oke, C.O.; Osgathorpe, L.M.; Paritsis, J.; Parra-H, A.; Pelegrin, N.; Peres, C.A.; Persson, A.S.; Petanidou, T.; Phalan, B.; Philips, T.K.; Poveda, K.; Power, E.F.; Presley, S.J.; Proença, V.; Quaranta, M.; Quintero, C.; Redpath-Downing, N.A.; Reid, J.L.; Reis, Y.T.; Ribeiro, D.B.; Richardson, B.A.; Richardson, M.J.; Robles, C.A.; Römbke, J.; Romero-Duque, L.P.; Rosselli, L.; Rossiter, S.J.; Roulston, T.H.; Rousseau, L.; Sadler, J.P.; Sáfián, S.; Saldaña-Vázquez, R.A.; Samnegård, U.; Schüepp, C.; Schweiger, O.; Sedlock, J.L.; Shahabuddin, G.; Sheil, D.; Silva, F.A.B.; Slade, E.M.; Smith-Pardo, A.H.; Sodhi, N.S.; Somarriba, E.J.; Sosa, R.A.; Stout, J.C.; Struebig, M.J.; Sung, Y.-H.; Threlfall, C.G.; Tonietto, R.; Tóthmérész, B.; Tscharntke, T.; Turner, E.C.; Tylianakis, J.M.; Vanbergen, A.J.; Vassilev, K.; Verboven, H.A.F.; Vergara, C.H.; Vergara, P.M.; Verhulst, J.; Walker, T.R.; Wang, Y.; Watling, J.I.; Wells, K.; Williams, C.D.; Willig, M.R.; Woinarski, J.C.Z.; Wolf, J.H.D.; Woodcock, B.A.; Yu, D.W.; Zaitsev, A.S.; Collen, B.; Ewers, R.M.; Mace, G.M.; Purves, D.W.; Scharlemann, J.P.W.; Purvis, A. |
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Title |
The PREDICTS database: A global database of how local terrestrial biodiversity responds to human impacts |
Type |
Journal Article |
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Year |
2014 |
Publication |
Ecology and Evolution |
Abbreviated Journal |
Ecology and Evolution |
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Volume |
4 |
Issue |
24 |
Pages |
4701-4735 |
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Data sharing; Global change; Habitat destruction; Land use |
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Biodiversity continues to decline in the face of increasing anthropogenic pressures such as habitat destruction, exploitation, pollution and introduction of alien species. Existing global databases of species' threat status or population time series are dominated by charismatic species. The collation of datasets with broad taxonomic and biogeographic extents, and that support computation of a range of biodiversity indicators, is necessary to enable better understanding of historical declines and to project – and avert – future declines. We describe and assess a new database of more than 1.6 million samples from 78 countries representing over 28,000 species, collated from existing spatial comparisons of local-scale biodiversity exposed to different intensities and types of anthropogenic pressures, from terrestrial sites around the world. The database contains measurements taken in 208 (of 814) ecoregions, 13 (of 14) biomes, 25 (of 35) biodiversity hotspots and 16 (of 17) megadiverse countries. The database contains more than 1% of the total number of all species described, and more than 1% of the described species within many taxonomic groups – including flowering plants, gymnosperms, birds, mammals, reptiles, amphibians, beetles, lepidopterans and hymenopterans. The dataset, which is still being added to, is therefore already considerably larger and more representative than those used by previous quantitative models of biodiversity trends and responses. The database is being assembled as part of the PREDICTS project (Projecting Responses of Ecological Diversity In Changing Terrestrial Systems – www.predicts.org.uk). We make site-level summary data available alongside this article. The full database will be publicly available in 2015. The collation of biodiversity datasets with broad taxonomic and biogeographic extents is necessary to understand historical declines and to project – and hopefully avert – future declines. We describe a newly collated database of more than 1.6 million biodiversity measurements from 78 countries representing over 28,000 species, collated from existing spatial comparisons of local-scale biodiversity exposed to different intensities and types of anthropogenic pressures, from terrestrial sites around the world. |
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Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, Gower StreetLondon, United Kingdom |
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Export Date: 6 January 2015 |
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EcoFoG @ webmaster @ |
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577 |
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Imbert, D. |
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Hurricane disturbance and forest dynamics in east Caribbean mangroves |
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Journal Article |
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2018 |
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Ecosphere |
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9 |
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7 |
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e02231 |
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Caribbean; forest recovery; high-energy storms; mangrove; resilience; resistance; Special Feature: High-Energy Storms |
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Despite low plant diversity and structural simplicity, mangroves offer various ecosystem services to local human communities, including sheltering coastal social-ecological systems from high-energy storm damage. The expected increasing intensity of hurricanes due to climate change raises questions concerning the capacity of mangroves to resist and recover from such disturbances. Herein, this study contributes to a better understanding of (1) the relation between storm intensity and damage to mangrove vegetation, (2) the contributions of species-specific as well as stand-specific components of mangrove vegetation to ecosystem resistance, and (3) the recovery of pre-hurricane forest structure through time. The first two issues have been addressed using a stand-level approach implemented at two east Caribbean mangrove sites in response to three storm events. The third was addressed through a 23-yr survey of forest recovery following the passage of a high-energy storm across one of the two study sites. Generally, hurricane damage was primarily controlled by wind velocity, followed by the hydro-geomorphic context of mangrove forests and species-specific composition, respectively. The relationship between damage to trees and wind velocity evidenced a sigmoidal trend, with a maximum slope at a wind velocity averaging 130 and 180 km/h for higher vs. lower canopy stands, respectively. The red mangrove, Rhizophora mangle, was significantly less resistant to hurricane damage than was the black mangrove, Avicennia germinans. Unlike the fringe and scrub stands, inner, tall-canopy stands fully recovered by the end of the study (23 yr). These stands were more resilient because of their growth performances. Finally, the time for east Caribbean mangroves to recover from high-energy storms seems to fall within the range of the average return time of such disturbances. This may prevent such ecosystems from ever reaching a steady state. |
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Laboratoire de Biologie Végétale, UMR EcoFoG, BP 592, Université des Antilles, Pointe-à-Pitre Cedex, 97159, France |
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Export Date: 17 September 2018 |
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EcoFoG @ webmaster @ |
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819 |
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Jabiol, J.; Corbara, B.; Dejean, A.; Cereghino, R. |
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Structure of aquatic insect communities in tank-bromeliads in a East-Amazonian rainforest in French Guiana |
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Journal Article |
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2009 |
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Forest Ecology and Management |
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For. Ecol. Manage. |
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257 |
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1 |
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351-360 |
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Bromeliaceae; Classification; Community structure; Insects; Microcosms; Neural networks; Nouragues; Phytotelmata; Species richness |
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Tank-bromeliads are discrete habitats which contain distinct aquatic communities, and which commonly occur in the neotropics. Because they span a broad range of ecological gradients in terms of habitat structure and amount of resources, researchers study the associations between the biodiversity of communities and these gradients in rainforests, where the very high species richness and densities within other continuous habitats makes it difficult to quantify animal communities. We analysed the diversity of aquatic insect communities in relation to different tank-bromeliad species in a primary rainforest (French Guiana) using artificial intelligence and complex optimization techniques to classify communities and model their determinants. First, the self-organizing map (neural network) was used to classify 158 bromeliads according to the quantitative structure of the insect communities. Catopsis berteroniana and Guzmania lingulata formed separate clusters of plants on the virtual map, while Vriesea splendens, Vriesea pleiosticha and Aechmea melinonii were grouped together in the remaining clusters. Some insect taxa occurred in all bromeliads, while other taxa were specific to a given species. Second, general linear modelling allowed us to specify the influence of the bromeliad species; water volume and volume of fine particulate organic matter inside of the tank; elevation above the ground; and sampling site on taxonomic richness and insect abundance. The number of taxa and individuals per plant increased with greater water volume, but the slope of the relationships depended on the bromeliad species. The significant influence of bromeliad species suggested that at similar water volumes different plant species had different taxon richness and insect abundance. Greater amounts of fine particulate organic matter were detrimental to community diversity in the tanks, probably because they decreased available space by clogging it and/or affected oxygen concentrations. The influence of tank-bromeliad species on the aquatic insect community was primarily related to their physical (and probably chemical) features rather than to species-specific associations sensu stricto. The classification of bromeliads with respect to animal species is likely to provide referential schemes for those biodiversity patterns to be expected under certain conditions, and may help to target model communities for subsequent experimental research. (C) 2008 Elsevier B,V. All rights reserved. |
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[Jabiol, J.; Cereghino, R.] Univ Toulouse 3, Ecolab, Lab Ecol Fonctionnelle, CNRS,UMR 5245, F-31062 Toulouse 9, France, Email: cereghin@cict.fr |
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ELSEVIER SCIENCE BV |
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ISI:000261856000038 |
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EcoFoG @ eric.marcon @ |
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124 |
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