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15 resultados encontrados para: AUTOR: Hernández Stefanoni, José Luis
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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
Combining LiDAR data and airborne imagery of very high resolution to improve aboveground biomass estimates in tropical dry forests
Reyes Palomeque, Gabriela (autora) ; Manuel Dupuy, Juan (autor) ; Johnson, Kristofer D. (autor) ; Castillo Santiago, Miguel Ángel (autor) ; Hernández Stefanoni, José Luis (autor) ;
Disponible en línea
Contenido en: Forestry An International Journal of Forest Research Volume 92, número 5 (October 2019), p. 599–615 ISSN: 1464-3626
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Resumen en: Inglés |
Resumen en inglés

Knowledge of the spatial distribution of aboveground biomass (AGB) is crucial to guide forest conservation and management to maintain carbon stocks. LiDAR has been highly successful for this purpose, but has limited availability. Very-high resolution (<1 m) orthophotos can also be used to estimate AGB because they allow a fine distinction of forest canopy grain. We evaluated the separate and joint performance of orthophotos and LiDAR data to estimate AGB in two types of tropical dry forests in the Yucatan Peninsula. Woody plants were surveyed in twenty 0.1 ha plots in a semideciduous forest at Kaxil Kiuic Biocultural Reserve (RBKK) and 28 plots in a semievergreen forest at Felipe Carrillo Puerto (FCP). We fitted three regression models: one based on LiDAR data, another based on orthophoto variables calculated for forest canopy and canopy opening fractions, and a third model that combined both sets of variables. Variation in AGB was decomposed into LiDAR, orthophotos and joint components using variation-partitioning analyses. In FCP, regression models using LiDAR data only showed higher fit (R2 = 0.82) than orthophoto variables only (R² = 0.70). In contrast, orthophotos had a slightly higher fit (R² = 0.91) than LiDAR (R2 = 0.88) in RBKK, because orthophoto variables characterize very well the horizontal structure of canopies on this site. The model that combined both data sets showed a better fit (R2 = 0.85) only in FCP, which has a more complex forest structure. The largest percentage of AGB variation (88 per cent in RBKK and 67 per cent in FCP) was explained by the joint contribution of LiDAR and orthophotos. We conclude that both LiDAR and orthophotos provide accurate estimation of AGB, but their relative performance varies with forest type and structural complexity. Combining the two sets of variables can further improve the accuracy of AGB estimation, particularly in forests with complex vegeta


3.
- Artículo con arbitraje
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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
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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.


4.
- Artículo con arbitraje
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Resumen en: Inglés |
Resumen en inglés

Accurate estimates of above ground biomass (AGB) are needed for monitoring carbon in tropical forests. LiDAR data can provide precise AGB estimations because it can capture the horizontal and vertical structure of vegetation. However, the accuracy of AGB estimations from LiDAR is affected by a co-registration error between LiDAR data and field plots resulting in spatial discrepancies between LiDAR and field plot data. Here, we evaluated the impacts of plot location error and plot size on the accuracy of AGB estimations predicted from LiDAR data in two types of tropical dry forests in Yucatán, México. We sampled woody plants of three size classes in 29 nested plots (80 m², 400 m² and 1000 m²) in a semi-deciduous forest (Kiuic) and 28 plots in a semi-evergreen forest (FCP) and estimated AGB using local allometric equations. We calculated several LiDAR metrics from airborne data and used a Monte Carlo simulation approach to assess the influence of plot location errors (2 to 10 m) and plot size on ABG estimations from LiDAR using regression analysis. Our results showed that the precision of AGB estimations improved as plot size increased from 80 m² to 1000 m² (R² = 0.33 to 0.75 and 0.23 to 0.67 for Kiuic and FCP respectively). We also found that increasing GPS location errors resulted in higher AGB estimation errors, especially in the smallest sample plots. In contrast, the largest plots showed consistently lower estimation errors that varied little with plot location error. We conclude that larger plots are less affected by co-registration error and vegetation conditions, highlighting the importance of selecting an appropriate plot size for field forest inventories used for estimating biomass.


5.
- 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
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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.


6.
- Artículo con arbitraje
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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
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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.


7.
- Artículo con arbitraje
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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
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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.


8.
Capítulo de libro - Memoria en libro con arbitraje
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Estimación de la distribución espacial de la biomasa forestal en la península de Yucatán, usando percepción remota y datos de campo
Valle Huchim, Rodrigo J. (autor) ; Hernández Stefanoni, José Luis (autor) ; Castillo Santiago, Miguel Ángel (autor) ;
Disponible en línea
Contenido en: Estado actual del conocimiento del ciclo del carbono y sus interacciones en México: síntesis a 2013 Texcoco, Estado de México, México: Programa Mexicano del Carbono : Colegio de Postgraduados : Universidad Autónoma de Chapingo : Instituto Tecnológico y de Estudios Superiores de Monterrey, 2013 páginas 234-242 ISBN:978-607-9649-01-2
Bibliotecas: Campeche , Villahermosa
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Resumen en español

La pérdida de cobertura vegetal propiciada por fenómenos naturales, así como la fragmentación, degradación (propiciada en una mayor medida por las acciones del hombre), están ocasionando que los ecosistemas pierdan su capacidad de regular y mantener muchos de los procesos ecológicos presentes, tales como la fijación natural del dióxido de carbono (CO2 ) por la vegetación. Esta pérdida de cobertura ocasiona un aumento del gas (CO2 ) en la atmósfera contribuyendo al calentamiento global. La cuantificación a gran escala de la biomasa mediante métodos fiables es una necesidad la cual actualmente está siendo probada a través de métodos de percepción remota con base en estimaciones de campo obtenidos de inventarios forestales


9.
Tesis - Doctorado
Distribución y diversidad espacial de orugas y de plantas en un paisaje tropical / Tijl Anton Essens
Essens, Tijl Anton ; Pozo, Carmen (tutora) ; Hernández Arana, Héctor Abuid (asesor) ; Hernández Stefanoni, José Luis (asesor) ; Dupuy, Juan Manuel (asesor) ;
Chetumal, Quintana Roo, México : El Colegio de la Frontera Sur , 2013
Clasificación: TE/595.781390972 / E8
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Disponibles para prestamo: 1
Resumen en español

La diversidad de especies local (α) y la variación en la composición de especies entre muestras (ß), así como las principales causas de patrones espaciales en la diversidad, son controversiales en el caso de los insectos herbívoros en bosques tropicales. Éste estudio pretendió detectar patrones espaciales de la diversidad en comunidades de plantas y de orugas (lepidópteros), y plantear estratégias para la conservación de estos grupos en un área heterogénea de bosque tropical estacionalmente seco en la Península de Yucatán. El estudio abarcó datos de 8927 orugas, sus plantas hospederas y 17770 individuos de plantas leñosas muestreadas en 240 sitios de diferente edad sucesional. Los resultados indican que la diversidad α de orugas no se asoció con la de plantas leñosas. Se predíjo la distribución espacial de la diversidad α de orugas y de plantas usando información espectral de una imagen de satélite y la dependencia espacial entre muestras; las áreas con un traslape parcial de mayor diversidad α de plantas y de orugas indican áreas prioritarias para la conservación. Asimismo, se identificó la influencia relativa de los factores ambientales locales, la estructura del paisaje y la dependencia espacial que contribuyen a la diversidad β de orugas y la de plantas. Sólo en bosques jóvenes se identificó una asociación entre la diversidad ß de plantas y la de orugas. En vista de la compleja distribución espacio-temporal y la megadiversidad de lepidópteros, se sugiere que futuros estudios se enfoquen en la estacionalidad y la dispersión de las especies de lepidópteros indicadoras identificadas, el mapeo de la diversidad ß y la detección del régimen del disturbio que optimice la diversidad α y β de plantas y de orugas, con el fin determinar áreas para la conservación de la biodiversidad de éstos.

Índice

Agradecimientos
Índice general
Resumen
Introducción General
Justificación
Paisajes en cambio
Lepidópteros
La diversidad de especies
Medidas de la diversidad
Factores que influyen la diversidad
Objetivos
Objetivo general
Objetivos particulares
Metodología
Área de estudio
Muestreo
Análisis de datos
Esquema de la tesis
Resultados
Mapping Lepidoptera and plant alpha-diversity across a heterogeneous tropical dry forest using field and remotely sensed data with spatial interpolation
Identificación de las fuentes de la variación espacial en la composición de especies y de subfamilias de lepidopteros en un bosque tropical
Environmental and spatial sources of variation in plant and caterpillar species composition in a seasonally dry tropical forest mosaic, Mexico
Pondering relationships between plant and caterpillar taxonomic diversity in a heterogeneous tropical landscape
Discusión General
Diversidad local
Recambio de especies
Conclusiones y perspectivas para la conservación de especies
Literatura
Permiso de colecta
Resumen curricular
Lista de contactos


10.
- Artículo con arbitraje
*En hemeroteca, SIBE-San Cristóbal-Samples
Estimating the spatial distribution of woody biomass suitable for charcoal making from remote sensing and geostatistics in central Mexico
Castillo Santiago, Miguel Ángel (autor) ; Ghilardi, Adrián (aut) ; Oyama, Ken (coaut.) ; Hernández Stefanoni, José Luis (coaut.) ; Torres, Ignacio (coaut.) ; Flamenco Sandoval, Alejandro Fidel (coaut.) ; Fernández, Ana María (coaut.) (1944-) ; Mas, Jean François (coaut.) ;
Contenido en: Energy for Sustainable Development Vol. 17, no. 2 (April 2013), p. 177–188 ISSN: 0973-0826
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
35836-20 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal-Samples
Resumen en: Inglés |
Resumen en inglés

We present a cost-effective statistical approach that integrates satellite imagery, environmental variables and ground inventory data to map the spatial distribution of aboveground woody biomass suitable for charcoal making. The study was conducted in the Cuitzeo basin located in central Mexico, where charcoal is produced from oak forests covering approximately 10% of the total area (4033 km2). Diameters of trees and sprouts in 78 plots of 0.2 ha each was measured. Allometric equations previously developed locally that only require tree diameters were employed to estimate the amount of woody biomass suitable for charcoal making i.e. the amount of wood that is loaded into the kilns. The performance of two statistical techniques for the interpolation of field data was assessed by cross-validation; these techniques were linear regression and regression-kriging, the second taking into account the spatial autocorrelation of data. Spectral bands, vegetation indices, texture measurements and variables derived from a Digital Elevation Model were examined as explanatory variables. Accounting for spatial autocorrelation (regression-kriging) improved the model's R2 from 0.61 to 0.69, representing a relative error reduction of 11.3% (from 11.01 to 9.77 t ha− 1 of wood suitable for charcoal). The available stock was compared to current estimates of charcoal demand in the Cuitzeo basin and insights were given on how this information can be used to estimate the annual sustainable production potential of oak in order to account for supply–demand balances.