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8 resultados encontrados para: AUTOR: van Breugel, Michiel
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1.
- Artículo con arbitraje
Biodiversity recovery of Neotropical secondary forests
Rozendaal, Danaë M. A. (autora) ; Bongers, Frans (coaut.) ; Aide, T. Mitchell (coaut.) ; Álvarez Dávila, Esteban (autor) ; Ascarrunz, Nataly (autora) ; Balvanera, Patricia (autora) ; Becknell, Justin M. (coaut.) ; Bentos, Tony V. (coaut.) ; Brancalion, Pedro H. S. (autor) ; Cabral, George A. L. (coaut.) ; Calvo Rodríguez, Sofía (autora) ; Chave, Jerome (coaut.) ; César, Ricardo G. (autor) ; Chazdon, Robin L. (autor) ; Condit, Richard (autor) ; Dallinga, Jorn S. (coaut.) ; Almeida Cortez, Jarcilene Silva (coaut.) ; De Jong, Bernardus Hendricus Jozeph (autor) ; Oliveira, Alexandre A. de (autor) ; Denslow, Julie S. (autor) ; Dent, Daisy H. (coaut.) ; DeWalt, Saara J. (autora) ; Dupuy, Juan Manuel (autor) ; Durán, Sandra M. (autora) ; Dutrieux, Loïc P. (coaut.) ; Espírito Santo, Mario M. (autor) ; Fandino, María C. (autora) ; Fernandes, G. Wilson (autor) ; Finegan, Bryan (coaut.) ; García, Hernando (autor) ; González Valdivia, Noel Antonio (autor) ; Granda Moser, Vanessa (autora) ; Hall, Jefferson S. (autor) ; Hernández Stefanoni, José Luis (autor) ; Hubbell, Stephen (autor) ; Jakovac, Catarina C. (autora) ; Hernández, Alma Johanna (autora) ; Junqueira, André B. (autor) ; Kennard, Deborah (coaut.) ; Larpin, Denis (autora) ; Letcher, Susan G. (autora) ; Licona, Juan Carlos (autor) ; Lebrija Trejos, Edwin (autor) ; Marín Spiotta, Erika (autora) ; Martínez Ramos, Miguel (autor) ; Massoca, Paulo E. S. (autor) ; Meave, Jorge A. (autor) ; Mesquita, Rita C. G. (autora) ; Mora, Francisco (autor) ; Müller, Sandra C. (autora) ; Muñoz, Rodrigo (autor) ; Nolasco de Oliveira Neto, Silvio (autor) ; Norden, Natalia (autora) ; Nunes, Yule R. F. (coaut.) ; Ochoa Gaona, Susana (autora) ; Ortiz Malavassi, Edgar (autor) ; Ostertag, Rebecca (autora) ; Peña Claros, Marielos (autor) ; Pérez García, Eduardo A. (autor) ; Piotto, Daniel (autor) ; Powers, Jennifer S. (autora) ; Aguilar Cano, José (autor) ; Rodríguez Buritica, Susana (autora) ; Rodríguez Velázquez, Jorge (autor) ; Romero Romero, Marco Antonio (autor) ; Ruíz, Jorge (autor) ; Sánchez Azofeifa, Gerardo Arturo (autor) ; Silva de Almeida, Arlete (autor) ; Silver, Whendee L. (coaut.) ; Schwartz, Naomi B. (coaut.) ; Thomas, William Wayt (coaut.) ; Toledo, Marisol (autora) ; Uriarte, María (autora) ; Valadares de Sá Sampaio, Everardo (autor) ; van Breugel, Michiel (autor) ; Van Der Wal, Hans (coaut.) ; Martins, Sebastião Venâncio (autor) ; Veloso, María D. M. (autor) ; Vester, Hans F. M. (coaut.) ; Vicentini, Alberto (autor) ; Vieira, Ima C. G. (coaut.) ; Villa, Pedro (autor) ; Williamson, G. Bruce (autor) ; Zanini, Kátia J. (autora) ; Zimmerman, Jess (coaut.) ; Poorter, Lourens (coaut.) ;
Disponible en línea
Contenido en: Science Advances Vol. 5, no. 3, eaau3114 (March 2019), p. 1-10 ISSN: 2375-2548
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Resumen en: Inglés |
Resumen en inglés

Old-growth tropical forests harbor an immense diversity of tree species but are rapidly being cleared, while secondary forests that regrow on abandoned agricultural lands increase in extent. We assess how tree species richness and composition recover during secondary succession across gradients in environmental conditions and anthropogenic disturbance in an unprecedented multisite analysis for the Neotropics. Secondary forests recover remarkably fast in species richness but slowly in species composition. Secondary forests take a median time of five decades to recover the species richness of old-growth forest (80% recovery after 20 years) based on rarefaction analysis. Full recovery of species composition takes centuries (only 34% recovery after 20 years). A dual strategy that maintains both old-growth forests and species-rich secondary forests is therefore crucial for biodiversity conservation in human-modified tropical landscapes.


2.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Wet and dry tropical forests show opposite successional pathways in wood density but converge over time
Poorter, Lourens (autor) ; Rozendaal, Danaë M. A. (autora) ; Bongers, Frans (autor) ; Almeida Cortez, Jarcilene Silva (autora) ; Almeyda Zambrano, Angélica María (autora) ; Álvarez, Francisco S. (autor) ; Andrade, José Luis (autor) ; Arreola Villa, Luis Felipe (autor) ; Balvanera, Patricia (autora) ; Becknell, Justin M. (autor) ; Bentos, Tony V. (autor) ; Bhaskar, Radika (autora) ; Boukili, Vanessa (autora) ; Brancalion, Pedro H. S. (autor) ; Broadbent, Eben North (autor) ; César, Ricardo G. (autor) ; Chave, Jerome (autor) ; Chazdon, Robin L. (autor) ; Dalla Colletta, Gabriel (autor) ; Craven, Dylan (autor) ; De Jong, Bernardus Hendricus Jozeph (autor) ; Denslow, Julie Sloan (autora) ; Dent, Daisy H. (autora) ; DeWalt, Saara J. (autora) ; Díaz García, Elisa (autora) ; Dupuy Rada, Juan Manuel (autor) ; Durán, Sandra M. (autora) ; Espírito Santo, Mario M. (autor) ; Fandiño, María C. (autora) ; Fernandes, Geraldo Wilson (autor) ; Finegan, Bryan (autor) ; Granda Moser, Vanessa (autora) ; Hall, Jefferson S. (autor) ; Hernández Stefanoni, José Luis (autor) ; Jakovac, Catarina C. (autora) ; Junqueira, André B. (autor) ; Kennard, Deborah (autra) ; Lebrija Trejos, Edwin (autor) ; Letcher, Susan G. (autora) ; Lohbeck, Madelon (autora) ; López, Omar R. (autor) ; Marín Spiotta, Erika (autora) ; Martínez Ramos, Miguel (autor) ; Martins, Sebastião Venâncio (autor) ; Massoca, Paulo E. S. (autor) ; Meave, Jorge A. (autor) ; Mesquita, Rita C. G (autora) ; Mora, Francisco (autor) ; Moreno, Vanessa de Souza (autora) ; Müller, Sandra C. (autora) ; Muñoz, Rodrigo (autor) ; Muscarella, Robert (autor) ; Nolasco de Oliveira Neto, Silvio (autor) ; Nunes, Yule R. F. (autor) ; Ochoa Gaona, Susana (autora) ; Paz, Horacio (autor) ; Peña Claros, Marielos (autor) ; Piotto, Daniel (autor) ; Ruíz, Jorge (autor) ; Sanaphre Villanueva, Lucía (autora) ; Sánchez Azofeifa, Gerardo Arturo (autor) ; Schwartz, Naomi B. (autora) ; Steininger, Marc K. (autor) ; Thomas, William Wayt (autor) ; Toledo, Marisol (autora) ; Uriarte, María (autora) ; Utrera, Luis P. (autor) ; van Breugel, Michiel (autor) ; van der Sande, Masha T. (coaut.) ; Van Der Wal, Hans (coaut.) ; Veloso, María D. M. (autora) ; Vester, Henricus F. M. (autor) ; Vieira, Ima Celia G. (autora) ; Villa, Pedro Manuel (autor) ; Williamson, G. Bruce (autor) ; Wright, S. Joseph (autor) ; Zanini, Kátia J. (autora) ; Zimmerman, Jess K. (autor) ; Westoby, Mark (autor) ;
Disponible en línea
Contenido en: Nature Ecology & Evolution Vol. 3, no. 6 (Jun 2019), p. 928–934 ISSN: 2397-334X
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Tropical forests are converted at an alarming rate for agricultural use and pastureland, but also regrow naturally through secondary succession. For successful forest restoration, it is essential to understand the mechanisms of secondary succession. These mechanisms may vary across forest types, but analyses across broad spatial scales are lacking. Here, we analyse forest recovery using 1,403 plots that differ in age since agricultural abandonment from 50 sites across the Neotropics. We analyse changes in community composition using species-specific stem wood density (WD), which is a key trait for plant growth, survival and forest carbon storage. In wet forest, succession proceeds from low towards high community WD (acquisitive towards conservative trait values), in line with standard successional theory. However, in dry forest, succession proceeds from high towards low community WD (conservative towards acquisitive trait values), probably because high WD reflects drought tolerance in harsh early successional environments. Dry season intensity drives WD recovery by influencing the start and trajectory of succession, resulting in convergence of the community WD over time as vegetation cover builds up. These ecological insights can be used to improve species selection for reforestation. Reforestation species selected to establish a first protective canopy layer should, among other criteria, ideally have a similar WD to the early successional communities that dominate under the prevailing macroclimatic conditions.


3.
- Artículo con arbitraje
Legume abundance along successional and rainfall gradients in Neotropical forests
Gei, Maga ; Rozendaal, Danaë M. A. (coaut.) ; Poorter, Lourens (coaut.) ; Bongers, Frans (coaut.) ; Sprent, Janet I. (coaut.) ; Garner, Mira D. (coaut.) ; Aide, T. Mitchell (coaut.) ; Andrade, José Luis (coaut.) ; Balvanera, Patricia (coaut.) ; Becknell, Justin M. (coaut.) ; Brancalion, Pedro H. S. (coaut.) ; Cabral, George A. L. (coaut.) ; Gomes César, Ricardo (coaut.) ; Chazdon, Robin L. (coaut.) ; Cole, Rebecca J. (coaut.) ; Dalla Colletta, Gabriel (coaut.) ; De Jong, Bernardus Hendricus Jozeph (coaut.) ; Denslow, Julie S. (coaut.) ; Dent, Daisy H. (coaut.) ; DeWalt, Saara J. (coaut.) ; Dupuy, Juan Manuel (coaut.) ; Durán, Sandra M. (coaut.) ; do Espírito Santo, Mário Marcos (coaut.) ; Fernandes, G. Wilson (coaut.) ; Ferreira Nunes, Yule Roberta (coaut.) ; Finegan, Bryan (coaut.) ; Granda Moser, Vanessa (coaut.) ; Hall, Jefferson S. (coaut.) ; Hernández Stefanoni, José Luis (coaut.) ; Junqueira, André B. (coaut.) ; Kennard, Deborah (coaut.) ; Lebrija Trejos, Edwin (coaut.) ; Letcher, Susan G. (coaut.) ; Lohbeck, Madelon (coaut.) ; Marín Spiotta, Erika (coaut.) ; Martínez Ramos, Miguel (coaut.) ; Meave, Jorge A. (coaut.) ; Menge, Duncan N. L. (coaut.) ; Mora, Francisco (coaut.) ; Muñoz, Rodrigo (coaut.) ; Muscarella, Robert (coaut.) ; Ochoa Gaona, Susana (coaut.) ; Orihuela Belmonte, Dolores Edith (coaut.) ; Ostertag, Rebecca (coaut.) ; Peña Claros, Marielos (coaut.) ; Pérez García, Eduardo A. (coaut.) ; Piotto, Daniel (coaut.) ; Reich, Peter B. (coaut.) ; Reyes García, Casandra (coaut.) ; Rodríguez Velázquez, Jorge (coaut.) ; Romero Pérez, Isabel Eunice (coaut.) ; Sanaphre-Villanueva, Lucía (coaut.) ; Sánchez Azofeifa, Arturo (coaut.) ; Schwartz, Naomi B. (coaut.) ; Silva de Almeida, Arlete (coaut.) ; Almeida Cortez, Jarcilene Silva (coaut.) ; Silver, Whendee L. (coaut.) ; de Souza Moreno, Vanessa (coaut.) ; Sullivan, Benjamin W. (coaut.) ; Swenson, Nathan G. (coaut.) ; Uriarte, María (coaut.) ; van Breugel, Michiel (coaut.) ; Van Der Wal, Hans (coaut.) ; Magalhães Veloso, Maria Das Dores (coaut.) ; Vester, Hans F. M. (coaut.) ; Guimarães Vieira, Ima Célia (coaut.) ; Zimmerman, Jess K. (coaut.) ; Powers, Jennifer S. (caout.) ;
Contenido en: Nature Ecology and Evolution Vol. 2, no. 7 (Jun. 2018), p. 1104–1111 ISSN: 2397-334X
PDF
Resumen en: Inglés |
Resumen en inglés

The nutrient demands of regrowing tropical forests are partly satisfied by nitrogen-fixing legume trees, but our understanding of the abundance of those species is biased towards wet tropical regions. Here we show how the abundance of Leguminosae is affected by both recovery from disturbance and large-scale rainfall gradients through a synthesis of forest inventory plots from a network of 42 Neotropical forest chronosequences. During the first three decades of natural forest regeneration, legume basal area is twice as high in dry compared with wet secondary forests. The tremendous ecological success of legumes in recently disturbed, water-limited forests is likely to be related to both their reduced leaflet size and ability to fix N2, which together enhance legume drought tolerance and water-use efficiency. Earth system models should incorporate these large-scale successional and climatic patterns of legume dominance to provide more accurate estimates of the maximum potential for natural nitrogen fixation across tropical forests.


4.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Biomass resilience of Neotropical secondary forests
Poorter, Lourens (coaut.) ; Bongers, Frans (coaut.) ; Aide, T. Mitchell (coaut.) ; Almeyda Zambrano, Angélica M. (coaut.) ; Balvanera, Patricia (coaut.) ; Becknell, Justin M. (coaut.) ; Boukili, Vanessa (coaut.) ; Brancalion, Pedro H. S. (coaut.) ; Broadbent, Eben N. (coaut.) ; Chazdon, Robin L. (coaut.) ; Craven, Dylan (coaut.) ; Almeida Cortez, Jarcilene Silva (coaut.) ; Cabral, George A. L. (coaut.) ; De Jong, Bernardus Hendricus Jozeph (coaut.) ; Denslow, Julie Sloan (coaut.) ; Dent, Daisy H. (coaut.) ; DeWalt, Saara J. (coaut.) ; Dupuy, Juan Manuel (coaut.) ; Durán, Sandra M. (coaut.) ; Espírito Santo, Mario M. (coaut.) ; Fandino, María C. (coaut.) ; César, Ricardo G. (coaut.) ; Hall, Jefferson S. (coaut.) ; Hernández Stefanoni, José Luis (coaut.) ; Jakovac, Catarina C. (coaut.) ; Junqueira, André B. (coaut.) ; Kennard, Deborah (coaut.) ; Letcher, Susan G. (coaut.) ; Licona, Juan Carlos (coaut.) ; Lohbeck, Madelon (coaut.) ; Marín Spiotta, Erika (coaut.) ; Martínez Ramos, Miguel (coaut.) ; Massoca, Paulo E. S. (coaut.) ; Meave, Jorge A. (coaut.) ; Mesquita, Rita C. G. (coaut.) ; Mora, Francisco (coaut.) ; Muñoz, Rodrigo (coaut.) ; Muschler, Reinhold G. (coaut.) ; Nunes, Yule R. F. (coaut.) ; Ochoa Gaona, Susana (coaut.) ; Oliveira, Alexandre A. de (coaut.) ; Orihuela Belmonte, Dolores Edith (coaut.) ; Peña Claros, Marielos (coaut.) ; Pérez García, Eduardo A. (coaut.) ; Piotto, Daniel (coaut.) ; Powers, Jennifer S. (coaut.) ; Rodríguez Velázquez, Jorge (coaut.) ; Romero Pérez, Isabel Eunice (coaut.) ; Ruíz, Jorge (coaut.) ; Saldarriaga, Juan G. (coaut.) ; Sánchez Azofeifa, Gerardo Arturo (coaut.) ; Schwartz, Naomi B. (coaut.) ; Steininger, Marc K. (coaut.) ; Swenson, Nathan G. (coaut.) ; Toledo, Marisol (coaut.) ; Uriarte, María (coaut.) ; van Breugel, Michiel (coaut.) ; Van Der Wal, Hans (coaut.) ; Veloso, María D. M. (coaut.) ; Vester, Hans F. M. (coaut.) ; Vicentini, Alberto (coaut.) ; Vieira, Ima Celia G. (coaut.) ; Vizcarra Bentos, Tony (coaut.) ; Williamson, G. Bruce (coaut.) ; Rozendaal, Danaë M. A. (coaut.) ;
Contenido en: Nature Vol. 530, no. 211 (February 2016), p. 211–214 ISSN: 0028-0836
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Land-use change occurs nowhere more rapidly than in the tropics, where the imbalance between deforestation and forest regrowth has large consequences for the global carbon cycle1. However, considerable uncertainty remains about the rate of biomass recovery in secondary forests, and how these rates are influenced by climate, landscape, and prior land use2–4. Here we analyse aboveground biomass recovery during secondary succession in 45 forest sites and about 1,500 forest plots covering the major environmental gradients in the Neotropics. The studied secondary forests are highly productive and resilient. Aboveground biomass recovery after 20 years was on average 122 megagrams per hectare (Mg ha−¹), corresponding to a net carbon uptake of 3.05 Mg C ha−¹ yr−¹, 11 times the uptake rate of old-growth forests. Aboveground biomass stocks took a median time of 66 years to recover to 90% of old-growth values. Aboveground biomass recovery after 20 years varied 11.3-fold (from 20 to 225 Mg ha−¹) across sites, and this recovery increased with water availability (higher local rainfall and lower climatic water deficit). We present a biomass recovery map of Latin America, which illustrates geographical and climatic variation in carbon sequestration potential during forest regrowth. The map will support policies to minimize forest loss in areas where biomass resilience is naturally low (such as seasonally dry forest regions) and promote forest regeneration and restoration in humid tropical lowland areas with high biomass resilience.


5.
- Artículo con arbitraje
*Solicítelo con su bibliotecario/a
Carbon sequestration potential of second-growth forest regeneration in the Latin American tropics
Chazdon, Robin L. (coaut.) ; Broadbent, Eben N. (coaut.) ; Rozendaal, Danaë M. A. (coaut.) ; Bongers, Frans (coaut.) ; Almeyda Zambrano, Angélica M. (coaut.) ; Aide, T. Mitchell (coaut.) ; Balvanera, Patricia (coaut.) ; Becknell, Justin M. (coaut.) ; Boukili, Vanessa (coaut.) ; Brancalion, Pedro H. S. (coaut.) ; Craven, Dylan (coaut.) ; Almeida Cortez, Jarcilene Silva (coaut.) ; Cabral, George A. L. (coaut.) ; De Jong, Bernardus Hendricus Jozeph (coaut.) ; Denslow, Julie S. (coaut.) ; Dent, Daisy H. (coaut.) ; DeWalt, Saara J. (coaut.) ; Dupuy, Juan M. (coaut.) ; Durán, Sandra M. (coaut.) ; Espírito Santo, Mario M. (coaut.) ; Fandino, María C. (coaut.) ; César, Ricardo G. (coaut.) ; Hall, Jefferson S. (coaut.) ; Hernández Stefanoni, José Luis (coaut.) ; Jakovac, Catarina C. (coaut.) ; Junqueira, André B. (coaut.) ; Kennard, Deborah (coaut.) ; Letcher, Susan G. (coaut.) ; Lohbeck, Madelon (coaut.) ; Martínez Ramos, Miguel (coaut.) ; Massoca, Paulo (coaut.) ; Meave, Jorge A. (coaut.) ; Mesquita, Rita (coaut.) ; Mora, Francisco (coaut.) ; Muñoz, Rodrigo (coaut.) ; Muscarella, Robert (coaut.) ; Nunes, Yule R. F. (coaut.) ; Ochoa Gaona, Susana (coaut.) ; Orihuela Belmonte, Dolores Edith (coaut.) ; Peña Claros, Marielos (coaut.) ; Pérez García, Eduardo A. (coaut.) ; Piotto, Daniel (coaut.) ; Powers, Jennifer S. (coaut.) ; Rodríguez Velázquez, Jorge (coaut.) ; Romero Pérez, Isabel Eunice (coaut.) ; Ruíz, Jorge (coaut.) ; Saldarriaga, Juan G. (coaut.) ; Sánchez Azofeifa, G. Arturo (coaut.) ; Schwartz, Naomi B. (coaut.) ; Steininger, Marc K. (coaut.) ; Swenson, Nathan G. (coaut.) ; Uriarte, María (coaut.) ; van Breugel, Michiel (coaut.) ; Van Der Wal, Hans (coaut.) ; Veloso, María D. M. (coaut.) ; Vester, Hans (coaut.) ; Vieira, Ima Celia G. (coaut.) ; Vizcarra Bentos, Tony (coaut.) ; Williamson, G. Bruce (coaut.) ; Poorter, Lourens (coaut.) ;
Contenido en: Science Advances Vol. 2, no. 5, e1501639 (May 2016), p. 1-10 ISSN: 2375-2548
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Regrowth of tropical secondary forests following complete or nearly complete removal of forest vegetation actively stores carbon in aboveground biomass, partially counterbalancing carbon emissions from deforestation, forest degradation, burning of fossil fuels, and other anthropogenic sources. We estimate the age and spatial extent of lowland second-growth forests in the Latin American tropics and model their potential aboveground carbon accumulation over four decades. Our model shows that, in 2008, second-growth forests (1 to 60 years old) covered 2.4 million km² of land (28.1%of the total study area).Over 40 years, these lands can potentially accumulate a total aboveground carbon stock of 8.48 Pg C (petagrams of carbon) in aboveground biomass via low-cost natural regeneration or assisted regeneration, corresponding to a total CO2 sequestration of 31.09 Pg CO2. This total is equivalent to carbon emissions from fossil fuel use and industrial processes in all of Latin America and the Caribbean from1993 to 2014. Ten countries account for 95% of this carbon storage potential, led by Brazil, Colombia, Mexico, and Venezuela. We model future land-use scenarios to guide national carbon mitigation policies. Permitting natural regeneration on 40% of lowland pastures potentially stores an additional 2.0 Pg C over 40 years. Our study provides information and maps to guide national-level forest-based carbon mitigation plans on the basis of estimated rates of natural regeneration and pasture abandonment. Coupled with avoided deforestation and sustainable forestmanagement, natural regeneration of second-growth forests provides a low-costmechanism that yields a high carbon sequestration potential with multiple benefits for biodiversity and ecosystem services.


6.
- Artículo con arbitraje
*En hemeroteca, SIBE-San Cristóbal
Beyond reserves: a research agenda for conserving biodiversity in human-modified tropical landscapes
Chazdon, Robin L. ; Harvey, Celia Alice (coaut.) ; Komar, Oliver (coaut.) ; Griffith, Daniel M. (coaut.) ; Ferguson, Bruce G. (coaut.) (1967-) ; Martínez Ramos, Miguel (coaut.) ; Morales, Helda Eleonora de Guadalupe (coaut.) (1964-) ; Soto Pinto, Lorena (coaut.) (1958-) ; van Breugel, Michiel (coaut.) ; Philpott, Stacy M. (coaut.) ;
Contenido en: Biotropica Vol. 41, No. 2 (March 2009), p. 142-153 ISSN: 0006-3606
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
47231-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
Resumen en: Inglés |
Resumen en inglés

To truly understand the current status of tropical diversity and to forecast future trends, we need to increase emphasis on the study of biodiversity in rural landscapes that are actively managed or modified by people. We present an integrated landscape approach to promote research in human-modified landscapes that includes the effects of landscape structure and dynamics on conservation of biodiversity, provision of ecosystem services, and sustainability of rural livelihoods. We propose research priorities encompassing three major areas: biodiversity, human-environment interactions, and restoration ecology. We highlight key areas where we lack knowledge and where additional understanding is most urgent for promoting conservation and sustaining rural livelihoods. Finally, we recommend participatory and multidisciplinary approaches in research and management. Lasting conservation efforts demand new alliances among conservation biologists, agroecologists, agronomists, farmers, indigenous peoples, rural social movements, foresters, social scientists, and land managers to collaborate in research, co-design conservation programs and policies, and manage human-modified landscapes in ways that enhance biodiversity conservation and promote sustainable livelihoods.


7.
Artículo
*En hemeroteca, SIBE-San Cristóbal
The potential of tree rings for the study of forest succession in southern Mexico[Recurso electrónico]
Brienen, Roel J. W. ; Lebrija Trejos, Edwin (coaut.) ; van Breugel, Michiel (coaut.) ; Pérez García, Eduardo A. (coaut.) ; Bongers, Frans (coaut.) ; Meave, Jorge A. (coaut.) ; Matínez Ramos, Miguel (coaut.) ;
Contenido en: Biotropica Vol. 41, no. 2 (March 2009), p. 186-195 ISSN: 0006-3606
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
47232-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF
Resumen en: Inglés |
Resumen en inglés

Studies of tropical secondary forest succession face strong limitations due to the slow pace of succession and the time-consuming task of monitoring processes. The occurrence of tree rings in secondary forest trees may help expand our knowledge on succession in these systems and may be useful for fallow dating in chronosequence studies. We examine here the potential of tree rings to study forest succession by sampling 70 species along chronosequences of dry and wet forests in southern Mexico. Based on wood anatomical features, we estimated that about 37 percent of the species presented distinct growth rings useful for ring studies. Overall, maximum number of rings matched well the interview-based fallow ages but, at some sites, trees had consistently higher numbers of rings, probably due to errors in fallow ages derived from interviews. Best fallow age estimations were obtained by examining rings in both pioneer and nonpioneer species. Reconstruction of species' establishment dates revealed that pioneer and nonpioneer species establish early during succession, and that species of both groups continue to recruit after many years. Our study clearly shows that tree ring analysis is a promising tool for studies on secondary forest succession in the tropics.


8.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Soil and light effects on the sapling performance of the shade - tolerant species Brosimum alicastrum (Moraceae) in a mexican tropical rain forest
López Toledo, Leonel (autor) ; Martínez, Mariana (autora) ; Breugel, Michiel Van (autor) ; Sterck, Frank J. (autor) ;
Contenido en: Journal of Tropical Ecology Vol. 24, no. 6 (November 2008), p. 629-637 ISSN: 0266-4674
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
46986-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
Resumen en: Inglés |
Resumen en inglés

Many studies conclude that light is the most important resource that determines plant performance of tree saplings in tropical rain forests, and implicitly suggest that soil resources are less important. To provide a quantitative test for soil versus light effects on sapling performance, we studied how saplings of the shade-tolerant tree species Brosimum alicastrumresponded to contrasting levels of light availability and soil fertility in a Mexican tropical rain forest. Therefore saplings were selected from ten low-light exposure (crown position index <1.5) and ten high-light exposure (crown position index ?2.5) sites either on productive alluvial soils, or on poor sandy soils on adjacent hills. Annual growth responses were scored for 58 saplings. The soil-light interaction had a strong positive effect on branching rate and leaf area production, rather than light or soil alone. Height growth only increased at higher light availability. Herbivore damage was higher on the more productive soil and, to a lesser extent, at higher light availability. Our results suggest that saplings (1) responded differently to soil and light availability, (2) expanded in overall size when both soil and light limitations are released, but only increased in height with increasing light intensity (3) and faced a trade-off between expansion and defence along both soil and light gradients. This study emphasizes the role of soil resources, in interaction with light availability, on the plastic responses in saplings living in a tropical forest understorey.