3 results on '"Silva-Espejo, J."'
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2. Amazon forest response to repeated droughts
- Author
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Feldpausch, T. R., Phillips, O. L., Brienen, R. J. W., Gloor, E., Lloyd, J., Lopez-Gonzalez, G., Monteagudo-Mendoza, A., Malhi, Y., Alarcón, A., Dávila, E. Álvarez, Alvarez-Loayza, P., Andrade, A., Aragao, L. E. O. C., Arroyo, L., Aymard C, G. A., Baker, T. R., Baraloto, C., Barroso, J., Bonal, D., Castro, W., Chama, V., Chave, J., Domingues, T. F., Fauset, S., Groot, N., Honorio Coronado, E., Laurance, S., Laurance, W. F., Lewis, S. L., Licona, J. C., Marimon, B. S., Marimon-Junior, B. H., Mendoza Bautista, C., Neill, D. A., Oliveira, E. A., Santos, C. Oliveira Dos, Pallqui Camacho, N. C., Pardo-Molina, G., Prieto, A., Quesada, C. A., Ramírez, F., Ramírez-Angulo, H., Réjou-Méchain, M., Rudas, A., Saiz, G., Salomão, R. P., Silva-Espejo, J. E., Silveira, M., Steege, H. Ter, Stropp, J., Terborgh, J., Thomas-Caesar, R., Heijden, G. M. F., Vásquez Martinez, R., Vilanova, E., Vincent Antoine Vos, Chercheur indépendant, Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] (EEF), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL), Evolution et Diversité Biologique (EDB), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Natural Environment Research Council (NERC) Urgency, Standard, and Consortium NE/I02982X/1, Niche Evolution of South American Trees NE/I028122/1, AMAZONICA NE/F005806/1, TROBIT NE/D005590/1, European Union 282664, CNPq/PELD 403725/2012-7, Gordon and Betty Moore Foundation, ERC, Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), Brazil, 177/2012 European Research Council, Royal Society Wolfson Research Merit Award, Investissement d'Avenir grants of the ANR CEBA: ANR-10-LABX-25-01 TULIP: ANR-10-LABX-0041, CNES funds (TOSCA), Biological Dynamics of Forest Fragments project 694, and The Royal Society
- Subjects
[SDV]Life Sciences [q-bio] ,TROPICAL FORESTS ,Environmental Sciences & Ecology ,precipitation ,INDUCED TREE MORTALITY ,LIANAS ,MECHANISMS ,BIOMASS ,PLOTS ,Meteorology & Atmospheric Sciences ,0402 Geochemistry ,Geosciences, Multidisciplinary ,water deficit ,forest productivity ,Science & Technology ,CLIMATE-CHANGE ,vegetation dynamics ,carbon ,fungi ,food and beverages ,Geology ,RAIN-FOREST ,SOILS ,Physical Sciences ,tree mortality ,GROWTH ,0401 Atmospheric Sciences ,Life Sciences & Biomedicine ,Environmental Sciences - Abstract
The Amazon Basin has experienced more variable climate over the last decade, with a severe and widespread drought in 2005 causing large basin-wide losses of biomass. A drought of similar climatological magnitude occurred again in 2010; however, there has been no basin-wide ground-based evaluation of effects on vegetation. We examine to what extent the 2010 drought affected forest dynamics using ground-based observations of mortality and growth from an extensive forest plot network. We find that during the 2010 drought interval, forests did not gain biomass (net change: −0.43 Mg ha−1, confidence interval (CI): −1.11, 0.19, n = 97), regardless of whether forests experienced precipitation deficit anomalies. This contrasted with a long-term biomass sink during the baseline pre-2010 drought period (1998 to pre-2010) of 1.33 Mg ha−1 yr−1 (CI: 0.90, 1.74, p
- Published
- 2016
3. Net primary productivity allocation and cycling of carbon along a tropical forest elevational transect in the Peruvian Andes C. A. J. GIRARDIN et al. NET PRIMARY PRODUCTIVITY FROM ANDES TO AMAZON.
- Author
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GIRARDIN, C. A. J., MALHI, Y., ARAGÃO, L. E. O. C., MAMANI, M., HUARACA HUASCO, W., DURAND, L., FEELEY, K. J., RAPP, J., SILVA-ESPEJO, J. E., SILMAN, M., SALINAS, N., and WHITTAKER, R. J.
- Subjects
BIOLOGICAL productivity ,CARBON & the environment ,FORESTS & forestry & the environment ,MOUNTAIN environmental conditions ,BIOTIC communities ,ALTITUDES ,BIOMASS - Abstract
The net primary productivity, carbon (C) stocks and turnover rates (i.e. C dynamics) of tropical forests are an important aspect of the global C cycle. These variables have been investigated in lowland tropical forests, but they have rarely been studied in tropical montane forests (TMFs). This study examines spatial patterns of above- and belowground C dynamics along a transect ranging from lowland Amazonia to the high Andes in SE Peru. Fine root biomass values increased from 1.50 Mg C ha at 194 m to 4.95 ± 0.62 Mg C ha at 3020 m, reaching a maximum of 6.83 ± 1.13 Mg C ha at the 2020 m elevation site. Aboveground biomass values decreased from 123.50 Mg C ha at 194 m to 47.03 Mg C ha at 3020 m. Mean annual belowground productivity was highest in the most fertile lowland plots (7.40 ± 1.00 Mg C ha yr) and ranged between 3.43 ± 0.73 and 1.48 ± 0.40 Mg C ha yr in the premontane and montane plots. Mean annual aboveground productivity was estimated to vary between 9.50 ± 1.08 Mg C ha yr (210 m) and 2.59 ± 0.40 Mg C ha yr (2020 m), with consistently lower values observed in the cloud immersion zone of the montane forest. Fine root C residence time increased from 0.31 years in lowland Amazonia to 3.78 ± 0.81 years at 3020 m and stem C residence time remained constant along the elevational transect, with a mean of 54 ± 4 years. The ratio of fine root biomass to stem biomass increased significantly with increasing elevation, whereas the allocation of net primary productivity above- and belowground remained approximately constant at all elevations. Although net primary productivity declined in the TMF, the partitioning of productivity between the ecosystem subcomponents remained the same in lowland, premontane and montane forests. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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