Valery Gond
Biographic Data
| ID | 1361566 |
|---|---|
| NAME | Valery Gond |
| GIVEN NAMES | Valery |
| FAMILY NAME | Gond |
| SIGNATURE | GOND V |
| AFFILIATIONS | Centre de Coopération Internationale en Recherche Agronomique pour le Développement |
| ORCID | 0000-0002-0080-3140 |
| VERIFIED | Yes |
| TOTAL WORKS | 14 |
| TOTAL CITATIONS | 31 |
| AUTHOR COUNT | 14 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2007 |
| LATEST PUBLICATION YEAR | 2023 |
| H-INDEX | 3 |
Enhancing monitoring of mangrove spatiotemporal tree diversity and distribution patterns
Spatiotemporal information on mangrove species assemblage of natural, disturbed, and rehabilitated is an essential prerequisite for effective strategies for biodiversity conservation and management. However, appropriate field‐based sampling strategies of spatial heterogeneity still hamper the detection of the species distribution and its temporal development. An increasing amount of remote sensing data seems the perfect way to tackle these challe…
How wildfires increase sensitivity of Amazon forests to droughts
The phenology of tropical forests is tightly related to climate conditions. In the Amazon, the seasonal greening of forests is conditioned by solar radiation and rainfall. Yet, increasing anthropogenic pressures (e.g. logging and wildfires), raise concerns about the impacts of forest degradation on the functioning of forest ecosystems, especially in a climate change context. In this study, we relied on remote sensing data to assess the contributi…
From land productivity trends to land degradation assessment in Mozambique: Effects of climate, human activities and stakeholder definitions
Remote sensing observations such as normalized difference vegetation index (NDVI) trends can provide important insights into past and present land condition. However, they do not directly provide comprehensive information about our representation of land degradation and the processes at work. This study aimed to analyze vegetation productivity underlying factors in order to assess land degradation and to highlight the impact of definitions on its…
Looking beyond forest cover: An analysis of landscape-scale predictors of forest degradation in the Brazilian Amazon
While forest degradation rates and extent exceed deforestation in the Brazilian Amazon, less attention is given to the factors controlling its spatial distribution. No quantified correlation exists between changes of forest structure due to anthropogenic disturbances and dynamics of land use and cover change occurring at broader spatial levels. This study examines the influence of multi-scale landscape structure factors (i.e. spatial composition,…
The Global Forest Transition as a Human Affair
Forests across the world stand at a crossroads where climate and land-use changes are shaping their future. Despite demonstrations of political will and global efforts, forest loss, fragmentation, and degradation continue unabated. No clear evidence exists to suggest that these initiatives are working. A key reason for this apparent ineffectiveness could lie in the failure to recognize the agency of all stakeholders involved. Landscapes do not ha…
Spatial priorities for conserving the most intact biodiverse forests within Central Africa
The forests of Central Africa contain some of Earth's few remaining intact forests. These forests are increasingly threatened by infrastructure development, agriculture, and unsustainable extraction of natural resources (e.g. minerals, bushmeat, and timber), all of which is leading to deforestation and forest degradation, particularly defaunation, and hence causing declines in biodiversity and a significant increase in carbon emissions. Given the…
The light-deficient climates of western Central African evergreen forests
Rainfall thresholds under which forests grow in Central Africa are lower than those of Amazonia and southeast Asia. Attention is thus regularly paid to rainfall whose seasonality and interannual variability has been shown to control Central African forests' water balance and photosynthetic activity. Nonetheless, light availability is also recognized as a key factor to tropical forests. Therefore this study aims to explore the light conditions pre…
Gold-rush in a forested El Dorado: Deforestation leakages and the need for regional cooperation
The future
Deforestation and timber production in Congo after implementation of sustainable management policy: A reaction to the article by J.S. Brandt, C. Nolte and A. Agrawal (Land Use Policy 52:15–22)
Unsustainable landscapes of deforested Amazonia: An analysis of the relationships among landscapes and the social, economic and environmental profiles of farms at different ages following deforestatio…
Towards a Revival of Indigenous Mobility inFrenchGuiana? Contemporary Transformations of theWayãpi andTeko Territories
The goal of this article is to understand the contemporary transformations of indigenous territories in relation to several factors, including urbanisation, population growth, economic development and conservation policies. Using socio-economic, governance and land use data, we explain the current territorial reorganisations of theWayãpi andTeko indigenous peoples. We demonstrate the existence of an emerging 'multi-sited' land use system that all…
Tracking land-cover changes with sedimentary charcoal in the Afrotropics
Fires have played an important role in creating and maintaining savannas over the centuries and are also one of the main natural disturbances in forests. The functional role of fires in savannas and forests can be investigated through examining sedimentary charcoal in order to reconstruct long-term fire history. However, the relationship between charcoal and vegetation structure in tropical grassy ecosystems remains to be elucidated. Here, we com…
La Géomatique, Outil de Surveillance de L'Orpaillage Clandestin en Guyane Française
2009). La Géomatique, Outil de Surveillance de L'Orpaillage Clandestin en Guyane Française. Canadian Journal of Latin American and Caribbean Studies / Revue canadienne des études latino-américaines et caraïbes: Vol. 34, Special Issue on Envrionmental Governance, pp. 177-193
Causes and Consequences of a Tropical Forest Gold Rush in the Guiana Shield, South America
Statistical and spatial analyses of both historical time series and remotely sensed data show a link between the spatial distribution and growth of gold production across the Guiana Shield in northeast Amazonia. Results indicate that an exponential rise in production across an expanding area is primarily a delayed response to the 1971-1978 market flotation of international gold prices. The subsequent 10-fold (2-fold) average nominal (real) price …
Tracking land-cover changes with sedimentary charcoal in the Afrotropics
Fires have played an important role in creating and maintaining savannas over the centuries and are also one of the main natural disturbances in forests. The functional role of fires in savannas and forests can be investigated through examining sedimentary charcoal in order to reconstruct long-term fire history. However, the relationship between charcoal and vegetation structure in tropical grassy ecosystems remains to be elucidated. Here, we com…
Causes and Consequences of a Tropical Forest Gold Rush in the Guiana Shield, South America
Statistical and spatial analyses of both historical time series and remotely sensed data show a link between the spatial distribution and growth of gold production across the Guiana Shield in northeast Amazonia. Results indicate that an exponential rise in production across an expanding area is primarily a delayed response to the 1971-1978 market flotation of international gold prices. The subsequent 10-fold (2-fold) average nominal (real) price …
Towards a Revival of Indigenous Mobility inFrenchGuiana? Contemporary Transformations of theWayãpi andTeko Territories
The goal of this article is to understand the contemporary transformations of indigenous territories in relation to several factors, including urbanisation, population growth, economic development and conservation policies. Using socio-economic, governance and land use data, we explain the current territorial reorganisations of theWayãpi andTeko indigenous peoples. We demonstrate the existence of an emerging 'multi-sited' land use system that all…
Unsustainable landscapes of deforested Amazonia: An analysis of the relationships among landscapes and the social, economic and environmental profiles of farms at different ages following deforestatio…
La Géomatique, Outil de Surveillance de L'Orpaillage Clandestin en Guyane Française
2009). La Géomatique, Outil de Surveillance de L'Orpaillage Clandestin en Guyane Française. Canadian Journal of Latin American and Caribbean Studies / Revue canadienne des études latino-américaines et caraïbes: Vol. 34, Special Issue on Envrionmental Governance, pp. 177-193
Causes and Consequences of a Tropical Forest Gold Rush in the Guiana Shield, South America
Statistical and spatial analyses of both historical time series and remotely sensed data show a link between the spatial distribution and growth of gold production across the Guiana Shield in northeast Amazonia. Results indicate that an exponential rise in production across an expanding area is primarily a delayed response to the 1971-1978 market flotation of international gold prices. The subsequent 10-fold (2-fold) average nominal (real) price …
La Géomatique, Outil de Surveillance de L'Orpaillage Clandestin en Guyane Française
2009). La Géomatique, Outil de Surveillance de L'Orpaillage Clandestin en Guyane Française. Canadian Journal of Latin American and Caribbean Studies / Revue canadienne des études latino-américaines et caraïbes: Vol. 34, Special Issue on Envrionmental Governance, pp. 177-193
Tracking land-cover changes with sedimentary charcoal in the Afrotropics
Fires have played an important role in creating and maintaining savannas over the centuries and are also one of the main natural disturbances in forests. The functional role of fires in savannas and forests can be investigated through examining sedimentary charcoal in order to reconstruct long-term fire history. However, the relationship between charcoal and vegetation structure in tropical grassy ecosystems remains to be elucidated. Here, we com…
Towards a Revival of Indigenous Mobility inFrenchGuiana? Contemporary Transformations of theWayãpi andTeko Territories
The goal of this article is to understand the contemporary transformations of indigenous territories in relation to several factors, including urbanisation, population growth, economic development and conservation policies. Using socio-economic, governance and land use data, we explain the current territorial reorganisations of theWayãpi andTeko indigenous peoples. We demonstrate the existence of an emerging 'multi-sited' land use system that all…
Unsustainable landscapes of deforested Amazonia: An analysis of the relationships among landscapes and the social, economic and environmental profiles of farms at different ages following deforestatio…
Gold-rush in a forested El Dorado: Deforestation leakages and the need for regional cooperation
The future
Deforestation and timber production in Congo after implementation of sustainable management policy: A reaction to the article by J.S. Brandt, C. Nolte and A. Agrawal (Land Use Policy 52:15–22)
The light-deficient climates of western Central African evergreen forests
Rainfall thresholds under which forests grow in Central Africa are lower than those of Amazonia and southeast Asia. Attention is thus regularly paid to rainfall whose seasonality and interannual variability has been shown to control Central African forests' water balance and photosynthetic activity. Nonetheless, light availability is also recognized as a key factor to tropical forests. Therefore this study aims to explore the light conditions pre…
The Global Forest Transition as a Human Affair
Forests across the world stand at a crossroads where climate and land-use changes are shaping their future. Despite demonstrations of political will and global efforts, forest loss, fragmentation, and degradation continue unabated. No clear evidence exists to suggest that these initiatives are working. A key reason for this apparent ineffectiveness could lie in the failure to recognize the agency of all stakeholders involved. Landscapes do not ha…
Spatial priorities for conserving the most intact biodiverse forests within Central Africa
The forests of Central Africa contain some of Earth's few remaining intact forests. These forests are increasingly threatened by infrastructure development, agriculture, and unsustainable extraction of natural resources (e.g. minerals, bushmeat, and timber), all of which is leading to deforestation and forest degradation, particularly defaunation, and hence causing declines in biodiversity and a significant increase in carbon emissions. Given the…
From land productivity trends to land degradation assessment in Mozambique: Effects of climate, human activities and stakeholder definitions
Remote sensing observations such as normalized difference vegetation index (NDVI) trends can provide important insights into past and present land condition. However, they do not directly provide comprehensive information about our representation of land degradation and the processes at work. This study aimed to analyze vegetation productivity underlying factors in order to assess land degradation and to highlight the impact of definitions on its…
Looking beyond forest cover: An analysis of landscape-scale predictors of forest degradation in the Brazilian Amazon
While forest degradation rates and extent exceed deforestation in the Brazilian Amazon, less attention is given to the factors controlling its spatial distribution. No quantified correlation exists between changes of forest structure due to anthropogenic disturbances and dynamics of land use and cover change occurring at broader spatial levels. This study examines the influence of multi-scale landscape structure factors (i.e. spatial composition,…
How wildfires increase sensitivity of Amazon forests to droughts
The phenology of tropical forests is tightly related to climate conditions. In the Amazon, the seasonal greening of forests is conditioned by solar radiation and rainfall. Yet, increasing anthropogenic pressures (e.g. logging and wildfires), raise concerns about the impacts of forest degradation on the functioning of forest ecosystems, especially in a climate change context. In this study, we relied on remote sensing data to assess the contributi…
Enhancing monitoring of mangrove spatiotemporal tree diversity and distribution patterns
Spatiotemporal information on mangrove species assemblage of natural, disturbed, and rehabilitated is an essential prerequisite for effective strategies for biodiversity conservation and management. However, appropriate field‐based sampling strategies of spatial heterogeneity still hamper the detection of the species distribution and its temporal development. An increasing amount of remote sensing data seems the perfect way to tackle these challe…
Geography (14 works) · Ecology (10 works) · Environmental Science (9 works) · Conservation, Biodiversity, and Resource Management (8 works) · Biology (7 works) · Land Use and Ecosystem Services (7 works) · African Botany and Ecology Studies (5 works) · Deforestation (computer science (5 works) · Environmental resource management (5 works) · Agroforestry (4 works)