7 results on '"Gillet, J.-f."'
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2. Floristic evidence for alternative biome states in tropical Africa
- Author
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Spatial Ecology and Global Change, Environmental Sciences, Aleman, J. C., Fayolle, A., Favier, C., Staver, A. C., Dexter, K. G., Ryan, C. M., Azihou, A. F., Bauman, D., te Beest, M., Chidumayo, E. N., Comiskey, J. A., Cromsigt, J. P. G. M., Dessard, H., Doucet, J.-L., Finckh, M., Gillet, J.-F., Gourlet-Fleury, S., Hempson, G. P., Holdo, R. M., Kirunda, B., Kouame, F. N., Mahy, G., Gonc calves, F. Maiato P., McNicol, I., Quintano, P. Nieto, Plumptre, A. J., Pritchard, R. C., Revermann, R., Schmitt, C. B., Swemmer, A. M., Talila, H., Woollen, E., Swaine, M. D., Spatial Ecology and Global Change, Environmental Sciences, Aleman, J. C., Fayolle, A., Favier, C., Staver, A. C., Dexter, K. G., Ryan, C. M., Azihou, A. F., Bauman, D., te Beest, M., Chidumayo, E. N., Comiskey, J. A., Cromsigt, J. P. G. M., Dessard, H., Doucet, J.-L., Finckh, M., Gillet, J.-F., Gourlet-Fleury, S., Hempson, G. P., Holdo, R. M., Kirunda, B., Kouame, F. N., Mahy, G., Gonc calves, F. Maiato P., McNicol, I., Quintano, P. Nieto, Plumptre, A. J., Pritchard, R. C., Revermann, R., Schmitt, C. B., Swemmer, A. M., Talila, H., Woollen, E., and Swaine, M. D.
- Published
- 2020
3. Are logging concessions a threat to the peatlands in DRC? (Les concessions d'exploitation forestière menacent-elles les tourbières en République démocratique du Congo?)
- Author
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Gourlet-Fleury, S., Gazull, L., Bigombe Logo, P., Billand, A., Bolaluembe, P.-C., Boyemba, F., Dessard, H., Doucet, J.-L., Doumenge, C., Dubiez, E., Durrieu de Madron, L., Feintrenie, L., Fomete, T., Garcia, C., Gillet, J.-F., Hérault, B., Karsenty, A., Menga, P., Ngoya Kessy, A.M., Pietsch, S., Putz, J., Rossi, V., Sayer, J., Sist, P., Zongang Ngongang, A.A., Gourlet-Fleury, S., Gazull, L., Bigombe Logo, P., Billand, A., Bolaluembe, P.-C., Boyemba, F., Dessard, H., Doucet, J.-L., Doumenge, C., Dubiez, E., Durrieu de Madron, L., Feintrenie, L., Fomete, T., Garcia, C., Gillet, J.-F., Hérault, B., Karsenty, A., Menga, P., Ngoya Kessy, A.M., Pietsch, S., Putz, J., Rossi, V., Sayer, J., Sist, P., and Zongang Ngongang, A.A.
- Published
- 2017
4. Above-ground biomass and structure of 260 African tropical forests
- Author
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Lewis, S.L., Sonke, B., Sunderland, T., Begne, S.K., Lopez-Gonzalez, G., van der Heijden, G.M.F., Phillips, O.L., Affum-Baffoe, K., Baker, T.R., Banin, L., Bastin, J-F., Beeckman, H., Boeckx, P., Bogaert, J., De Canniere, C., Chezeaux, E., Clark, C.J., Collins, M., Djagbletey, G., Djuikouo, M.N.K., Droissart, V., Doucet, J.-L., Ewango, C.E.N., Fauset, S., Feldpausch, T.R., Foli, E.G., Gillet, J.-F., Hamilton, A.C., Harris, D.J., Hart, T.B., de Haulleville, T., Hladik, A., Hufkens, K., Huygens, D., Jeanmart, P., Jeffery, K., Kearsley, E., Leal, M. E., Lloyd, J., Lovett, J. C., Makana, J.-R., Malhi, Y., Marshall, A. R., Ojo, L., Peh, K. S.- H., Pickavance, G., Poulsen, J. R., Reitsma, J. M., Sheil, D., Simo, M., Steppe, K., Taedoumg, H. E., Talbot, J., Taplin, J. R. D., Taylor, D., Thomas, S. C., Toirambe, B., Verbeeck, H., Vleminckx, J., White, L. J. T., Willcock, S., Woell, H., Zemagho, L., Lewis, S.L., Sonke, B., Sunderland, T., Begne, S.K., Lopez-Gonzalez, G., van der Heijden, G.M.F., Phillips, O.L., Affum-Baffoe, K., Baker, T.R., Banin, L., Bastin, J-F., Beeckman, H., Boeckx, P., Bogaert, J., De Canniere, C., Chezeaux, E., Clark, C.J., Collins, M., Djagbletey, G., Djuikouo, M.N.K., Droissart, V., Doucet, J.-L., Ewango, C.E.N., Fauset, S., Feldpausch, T.R., Foli, E.G., Gillet, J.-F., Hamilton, A.C., Harris, D.J., Hart, T.B., de Haulleville, T., Hladik, A., Hufkens, K., Huygens, D., Jeanmart, P., Jeffery, K., Kearsley, E., Leal, M. E., Lloyd, J., Lovett, J. C., Makana, J.-R., Malhi, Y., Marshall, A. R., Ojo, L., Peh, K. S.- H., Pickavance, G., Poulsen, J. R., Reitsma, J. M., Sheil, D., Simo, M., Steppe, K., Taedoumg, H. E., Talbot, J., Taplin, J. R. D., Taylor, D., Thomas, S. C., Toirambe, B., Verbeeck, H., Vleminckx, J., White, L. J. T., Willcock, S., Woell, H., and Zemagho, L.
- Abstract
We report above-ground biomass (AGB), basal area, stem density and wood mass density estimates from 260 sample plots (mean size: 1.2 ha) in intact closed-canopy tropical forests across 12 African countries. Mean AGB is 395.7 Mg dry mass ha21 (95% CI: 14.3), substantially higher than Amazonian values, with the Congo Basin and contiguous forest region attaining AGB values (429 Mg ha21) similar to those of Bornean forests, and significantly greater than east or west African forests. AGB therefore appears generally higher in palaeo- compared with neotropical forests. However, mean stem density is low (426+11 stems ha21 greater than or equal to 100 mm diameter) compared with both Amazonian and Bornean forests (cf. approx. 600) and is the signature structural feature of African tropical forests. While spatial autocorrelation complicates analyses, AGB shows a positive relationship with rainfall in the driest nine months of the year, and an opposite association with the wettest three months of the year; a negative relationship with temperature; positive relationship with clay-rich soils; and negative relationships with C :N ratio (suggesting a positive soil phosphorus–AGB relationship), and soil fertility computed as the sum of base cations. The results indicate that AGB is mediated by both climate and soils, and suggest that the AGB of African closed-canopy tropical forests may be particularly sensitive to future precipitation and temperature changes.
- Published
- 2013
5. Phylogenetic classification of the world's tropical forests
- Author
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Slik, J. W. F., Franklin, J., Arroyo-Rodríguez, V., Field, R., Aguilar, S., Aguirre, N., Ahumada, J., Aiba, S.-I., Alves, L. F., Anitha, K., Avella, A., Mora, F., Aymard, G. A. C., Báez, S., Balvanera, P., Bastian, M. L., Bastin, J.-F., Bellingham, P. J., Van Den Berg, E., Da Conceição Bispo, P., Boeckx, P., Boehning-Gaese, K., Bongers, F., Boyle, B., Brambach, F., Brearley, F. Q., Brown, S., Chai, S.-L., Chazdon, R. L., Chen, S., Chhang, P., Chuyong, G., Ewango, C., Coronado, I. M., Cristóbal-Azkarate, J., Culmsee, H., Damas, K., Dattaraja, H. S., Davidar, P., DeWalt, S. J., DIn, H., Drake, D. R., Duque, A., Durigan, G., Eichhorn, K., Eler, E. S., Enoki, T., Ensslin, A., Fandohan, A. B., Farwig, N., Feeley, K. J., Fischer, M., Forshed, O., Garcia, Q. S., Garkoti, S. C., Gillespie, T. W., Gillet, J.-F., Gonmadje, C., Granzow-De La Cerda, I., Griffith, D. M., Grogan, J., Hakeem, K. R., Harris, D. J., Harrison, R. D., Hector, A., Hemp, A., Homeier, J., Hussain, M. S., Ibarra-Manríquez, G., Hanum, I. F., Imai, N., Jansen, P. A., Joly, C. A., Joseph, S., Kartawinata, K., Kearsley, E., Kelly, D. L., Kessler, M., Killeen, T. J., Kooyman, R. M., Laumonier, Y., Laurance, S. G., Laurance, W. F., Lawes, M. J., Letcher, S. G., Lindsell, J., Lovett, J., Lozada, J., Lu, X., Lykke, A. M., Bin Mahmud, K., Mahayani, N. P. D., Mansor, A., Marshall, A. R., Martin, E. H., Matos, D. C. L., Meave, J. A., Melo, F. P. L., Mendoza, Z. H. A., Metali, F., Medjibe, V. P., Metzger, J. P., Metzker, T., Mohandass, D., Munguía-Rosas, M. A., Muñoz, R., Nurtjahy, E., De Oliveira, E. L., Onrizal, Parolin, P., Parren, M., Parthasarathy, N., Paudel, E., Perez, R., Pérez-García, E. A., Pommer, U., Poorter, L., Qi, L., Piedade, M. T. F., Pinto, J. R. R., Poulsen, A. D., Poulsen, J. R., Powers, J. S., Prasad, R. C., Puyravaud, J.-P., Rangel, O., Reitsma, J., Rocha, D. S. B., Rolim, S., Rovero, F., Rozak, A., Ruokolainen, K., Rutishauser, E., Rutten, G., Mohd Said, M. N., Saiter, F. Z., Saner, P., Santos, B., Dos Santos, J. R., Sarker, S. K., Schmitt, C. B., Schoengart, J., Schulze, M., Sheil, D., Sist, P., Souza, A. F., Spironello, W. R., Sposito, T., Steinmetz, R., Stevart, T., Suganuma, M. S., Sukri, R., Sultana, A., Sukumar, R., Sunderland, T., Supriyadi, Suresh, H. S., Suzuki, E., Tabarelli, M., Tang, J., Tanner, E. V. J., Targhetta, N., Theilade, I., Thomas, D., Timberlake, J., De Morisson Valeriano, M., Van Valkenburg, J., Van Do, T., Van Sam, H., Vandermeer, J. H., Verbeeck, H., Vetaas, O. R., Adekunle, V., Vieira, S. A., Webb, C. O., Webb, E. L., Whitfeld, T., Wich, S., Williams, J., Wiser, S., Wittmann, F., Yang, X., Yao, C. Y. A., Yap, S. L., Zahawi, R. A., Zakaria, R., and Zang, R.
- Subjects
15. Life on land
6. Above-ground biomass and structure of 260 African tropical forests
- Author
-
Lewis, S. L., Sonke, B., Sunderland, T., Begne, S. K., Lopez-Gonzalez, G., van der Heijden, G. M. F., Phillips, O. L., Affum-Baffoe, K., Baker, T. R., Banin, L., Bastin, J.-F., Beeckman, H., Boeckx, P., Bogaert, J., De Canniere, C., Chezeaux, E., Clark, C. J., Collins, Murray, Djagbletey, G., Djuikouo, M. N. K., Droissart, V., Doucet, J.-L., Ewango, C. E. N., Fauset, S., Feldpausch, T. R., Foli, E. G., Gillet, J.-F., Hamilton, A. C., Harris, D. J., Hart, T. B., de Haulleville, T., Hladik, A., Hufkens, K., Huygens, D., Jeanmart, P., Jeffery, K. J., Kearsley, E., Leal, M. E., Lloyd, J., Lovett, J. C., Makana, J.-R., Malhi, Y., Marshall, A. R., Ojo, L., Peh, K. S.- H., Pickavance, G., Poulsen, J. R., Reitsma, J. M., Sheil, D., Simo, M., Steppe, K., Taedoumg, H. E., Talbot, J., Taplin, J. R. D., Taylor, D., Thomas, S. C., Toirambe, B., Verbeeck, H., Vleminckx, J., White, L. J. T., Willcock, S., Woell, H., Zemagho, L., Lewis, S. L., Sonke, B., Sunderland, T., Begne, S. K., Lopez-Gonzalez, G., van der Heijden, G. M. F., Phillips, O. L., Affum-Baffoe, K., Baker, T. R., Banin, L., Bastin, J.-F., Beeckman, H., Boeckx, P., Bogaert, J., De Canniere, C., Chezeaux, E., Clark, C. J., Collins, Murray, Djagbletey, G., Djuikouo, M. N. K., Droissart, V., Doucet, J.-L., Ewango, C. E. N., Fauset, S., Feldpausch, T. R., Foli, E. G., Gillet, J.-F., Hamilton, A. C., Harris, D. J., Hart, T. B., de Haulleville, T., Hladik, A., Hufkens, K., Huygens, D., Jeanmart, P., Jeffery, K. J., Kearsley, E., Leal, M. E., Lloyd, J., Lovett, J. C., Makana, J.-R., Malhi, Y., Marshall, A. R., Ojo, L., Peh, K. S.- H., Pickavance, G., Poulsen, J. R., Reitsma, J. M., Sheil, D., Simo, M., Steppe, K., Taedoumg, H. E., Talbot, J., Taplin, J. R. D., Taylor, D., Thomas, S. C., Toirambe, B., Verbeeck, H., Vleminckx, J., White, L. J. T., Willcock, S., Woell, H., and Zemagho, L.
- Abstract
We report above-ground biomass (AGB), basal area, stem density and wood mass density estimates from 260 sample plots (mean size: 1.2 ha) in intact closed-canopy tropical forests across 12 African countries. Mean AGB is 395.7 Mg dry mass ha-1 (95% CI: 14.3), substantially higher than Amazonian values, with the Congo Basin and contiguous forest region attaining AGB values (429 Mg ha-1) similar to those of Bornean forests, and significantly greater than East or West African forests. AGB therefore appears generally higher in palaeo- compared with neotropical forests. However, mean stem density is low(426±11 stems ha-1 greater than or equal to 100 mm diameter) compared with both Amazonian and Bornean forests (cf. approx. 600) and is the signature structural feature of African tropical forests. While spatial autocorrelation complicates analyses, AGB shows a positive relationship with rainfall in the driest nine months of the year, and an opposite association with the wettest three months of the year; a negative relationship with temperature; positive relationship with clay-rich soils; and negative relationships with C:Nratio (suggesting a positive soil phosphorus- AGB relationship), and soil fertility computed as the sum of base cations. The results indicate that AGB is mediated by both climate and soils, and suggest that the AGB of African closed-canopy tropical forests may be particularly sensitive to future precipitation and temperature changes.
7. Seeing Central African forests through their largest trees.
- Author
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Bastin JF, Barbier N, Réjou-Méchain M, Fayolle A, Gourlet-Fleury S, Maniatis D, de Haulleville T, Baya F, Beeckman H, Beina D, Couteron P, Chuyong G, Dauby G, Doucet JL, Droissart V, Dufrêne M, Ewango C, Gillet JF, Gonmadje CH, Hart T, Kavali T, Kenfack D, Libalah M, Malhi Y, Makana JR, Pélissier R, Ploton P, Serckx A, Sonké B, Stevart T, Thomas DW, De Cannière C, and Bogaert J
- Subjects
- Africa, Biomass, Forests, Models, Biological
- Abstract
Large tropical trees and a few dominant species were recently identified as the main structuring elements of tropical forests. However, such result did not translate yet into quantitative approaches which are essential to understand, predict and monitor forest functions and composition over large, often poorly accessible territories. Here we show that the above-ground biomass (AGB) of the whole forest can be predicted from a few large trees and that the relationship is proved strikingly stable in 175 1-ha plots investigated across 8 sites spanning Central Africa. We designed a generic model predicting AGB with an error of 14% when based on only 5% of the stems, which points to universality in forest structural properties. For the first time in Africa, we identified some dominant species that disproportionally contribute to forest AGB with 1.5% of recorded species accounting for over 50% of the stock of AGB. Consequently, focusing on large trees and dominant species provides precise information on the whole forest stand. This offers new perspectives for understanding the functioning of tropical forests and opens new doors for the development of innovative monitoring strategies.
- Published
- 2015
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