Ecosystèmes Tropicaux
9.3K views | +0 today
Follow
 
Scooped by AgroParisTech Documentation Annabelle Filatre
onto Ecosystèmes Tropicaux
Scoop.it!

Pondering the role of community forestry in REDD+

Can community forestry in REDD+ be mutually beneficial, for people, forests and the climate? Researches show that well-managed community forests can provide important ecosystem services and contribute to climate change mitigation.
more...
No comment yet.
Ecosystèmes Tropicaux
Veille sur les écosystèmes tropicaux. Réalisée par Agroparistech - centre de Montpellier - A. Filatre
Your new post is loading...
Your new post is loading...
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Trees for Food Security - Forests, Trees and Agroforestry

Trees for Food Security Project goal is to enhance food security for resource-poor people in rural Eastern Africa through research that supports national programmes to scale up the use of trees within farming systems in Ethiopia and Rwanda and then scale out successes to relevant ago-ecological zones in Uganda and Burundi. Through the project, 5 Rural Resource Centers (2 in …
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

The impact of persistent volcanic degassing on vegetation: A case study at Turrialba volcano, Costa Rica

Publication date: July 2017
Source:International Journal of Applied Earth Observation and Geoinformation, Volume 59
Author(s): R. Tortini, S.M. van Manen, B.R.B Parkes, S.A. Carn
Although the impacts of large volcanic eruptions on the global environment have been frequently studied, the impacts of lower tropospheric emissions from persistently degassing volcanoes remain poorly understood. Gas emissions from persistent degassing exceed those from sporadic eruptive activity, and can have significant long-term (years to decades) effects on local and regional scales, both on humans and the environment. Here, we exploit a variety of high temporal and high spatial resolution satellite-based time series and complementary ground-based measurements of element deposition and surveys of species richness, to enable a comprehensive spatio-temporal assessment of sulfur dioxide (SO2) emissions and their associated impacts on vegetation at Turrialba volcano (Costa Rica) from 2000 to 2013. We observe increased emissions of SO2 coincident with a decline in vegetation health downwind of the vents, in accordance with the prevalent wind direction at Turrialba. We also find that satellite-derived vegetation indices at various spatial resolutions are able to accurately define the vegetation kill zone, the extent of which is independently confirmed by ground-based sampling, and monitor its expansion over time. In addition, ecological impacts in terms of vegetation composition and diversity and physiological damage to vegetation, all spatially correspond to fumigation by Turrialba’s plume. This study shows that analyzing and relating satellite observations to conditions and impacts on the ground can provide an increased understanding of volcanic degassing, its impacts in terms of the long-term vegetation response and the potential of satellite-based monitoring to inform hazard management strategies related to land use.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Variation in wood physical properties within stems of Guazuma crinita, a timber tree species in the Peruvian Amazon | World Agroforestry Centre

An understanding of wood physical properties and the interrelationships that govern them is required for efficient utilization of timber tree species. Guazuma crinita is a fast-growing timber tree of agroforestry systems in the Peruvian Amazon. The aim of this study was to assess variation in wood physical properties within the G. crinita stem.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

IUFRO: Publications

IUFRO: Publications | Ecosystèmes Tropicaux | Scoop.it
"Forests and Energy" is the 2017 theme of the International Day of Forests on 21 March! IUFRO Division 5 - Forest Products will address this and related themes in a major conference this June.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Overview of restoration and management practices in the degraded landscapes of the Sahelian and dryland forests and woodlands of East and southern Africa | World Agroforestry Centre

The highest deforestation and forest degradation rates in Africa occur in the dry forests and woodlands where pressure for land is increasing, poverty is rampant, livelihood options are few and climate change effects are severe. This paper examines factors that cause land and forest degradation in the Sahel and dry forests and woodlands of eastern and southern Africa and highlights some successful restoration practices, technologies and approaches.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Forests, Climate Change and REDD+: A brief introduction - Forests, Trees and Agroforestry

Forests, Climate Change and REDD+: A brief introduction - Forests, Trees and Agroforestry | Ecosystèmes Tropicaux | Scoop.it
Presentation by Maria Brockhaus, Professor of International Forest Policy at the University of Helsinki, Finland, at a workshop on ‘Sharing insights across REDD+ countries: Opportunities and obstacles for effective, efficient, and equitable REDD+ carbon and non-carbon results’, held from 21-23 February 2017 in Naypyidaw, Myanmar. Forests, Climate Change and REDD+: A brief introduction from Center for International Forestry Research (CIFOR)
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Expert-based ex-ante assessments of potential social, ecological, and economic impacts of upgrading strategies for improving food security in rural Tanzania using the ScalA-FS approach | World Agro...

Subsistence farmers in sub-Saharan Africa are highly vulnerable to food insecurity given their low adaptive capacity against ecological and socio-economic shocks. Therefore, food security is one of their main challenges. Participatory action research across food value chains (FVCs) can help stabilize and enhance food security by developing upgrading strategies (UPS) that enhance specific aspects of crop production, post-harvest processing, marketing, income generation, and consumption.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Evaluating fire severity in Sudanian ecosystems of Burkina Faso using Landsat 8 satellite images | World Agroforestry Centre

The fire severity of the 2013–2014 fire season within Sudanian ecosystems in Burkina Faso was evaluated from Landsat 8 images using derivatives of the Normalized Burn Ratio algorithm (NBR). The relationship between the image-derived severity and the field observed severity i.e. Composite Burn Index (CBI) was best described by a nonlinear model of the form y = a + b*EXP(CBI *c) (R2 = 0.66). Classification of the image-derived burned area into burn severity classes achieved a classification Kappa accuracy statistic of 0.56.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Faut-il ajouter une aide climatique ou mieux intégrer les préoccupations climatiques dans l’aide au développement?

The obligation of developed countries to support developing countries in their attempts to address climate challenges leads to question the linkage between this “climate aid” and development aid. We acknowledge that climate change creates a need for qualitative and quantitative changes in development aid benefitting to vulnerable countries and that the addition of an aid dedicated to climate issues (climate finance) partly responds to this need. However we show that this approach mainly provides inconveniences compared with an increase in development aid associated with adequate climate mainstreaming in all its components. We expect that this option would better contribute to a development decoupled from greenhouse gas emissions and adapted to climate constraints.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Smallholder Farmers and the Dynamics of Degradation of Peatland Ecosystems in Central Kalimantan, Indonesia

Publication date: June 2017
Source:Ecological Economics, Volume 136
Author(s): Medrilzam Medrilzam, Carl Smith, Ammar Abdul Aziz, John Herbohn, Paul Dargusch
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Prioritizing investments for climate-smart agriculture: Lessons learned from Mali

Publication date: June 2017
Source:Agricultural Systems, Volume 154
Author(s): N. Andrieu, B. Sogoba, R. Zougmore, F. Howland, O. Samake, O. Bonilla-Findji, M. Lizarazo, A. Nowak, C. Dembele, C. Corner-Dolloff
Agricultural productivity and growth in Mali are under threat from erratic rainfall, resulting in more frequent dry years. The national economy is vulnerable to climate change due to 50% of the gross domestic product coming from the agricultural sector and 75% of the population living in rural areas. The Climate-Smart Agriculture (CSA) concept arises from a need to provide innovative solutions towards the complex and integrated goals of increasing yields, improving resilience, and promoting a low emissions agricultural sector. A major challenge for policymakers to operationalize CSA is the identification, valuation (cost-benefit), and subsequent prioritization of climate-smart options and portfolios (groups of CSA options) for investment. This paper presents the process, results, and lessons learned from a yearlong pilot of the Climate-Smart Agriculture Prioritization Framework (CSA-PF) in Mali. Key national and international stakeholders participated in the co-development and prioritization of two CSA portfolios and related action plans for the Malian Sudanese zone. Initial steps towards outcomes of the process include inclusion of prioritized CSA practices in ongoing development projects and prompting discussion of modifications of future calls for agricultural development proposals by regional donors.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

High salinity leads to accumulation of soil organic carbon in mangrove soil

Publication date: June 2017
Source:Chemosphere, Volume 177
Author(s): Morimaru Kida, Mitsutoshi Tomotsune, Yasuo Iimura, Kazutoshi Kinjo, Toshiyuki Ohtsuka, Nobuhide Fujitake
Although mangrove forests are one of the most well-known soil organic carbon (SOC) sinks, the mechanism underlying SOC accumulation is relatively unknown. High net primary production (NPP) along with the typical bottom-heavy biomass allocation and low soil respiration (SR) have been considered to be responsible for SOC accumulation. However, an emerging paradigm postulates that SR is severely underestimated because of the leakage of dissolved inorganic carbon (DIC) in groundwater. Here we propose a simple yet unique mechanism for SOC accumulation in mangrove soils. We conducted sequential extraction of water extractable organic matter (WEOM) from mangrove soils using ultrapure water and artificial seawater, respectively. A sharp increase in humic substances (HS) concentration was observed only in the case of ultrapure water, along with a decline in salinity. Extracted WEOM was colloidal, and ≤70% of it re-precipitated by the addition of artificial seawater. These results strongly suggest that HS is selectively flocculated and maintained in the mangrove soils because of high salinity. Because sea salts are a characteristic of any mangrove forest, high salinity may be one of mechanisms underlying SOC accumulation in mangrove soils.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

What stories can a pixel tell?: monitoring landscape changes through remote sensing - Forests, Trees and Agroforestry

What stories can a pixel tell?: monitoring landscape changes through remote sensing - Forests, Trees and Agroforestry | Ecosystèmes Tropicaux | Scoop.it
By Amy Cruz, originally published at ICRAF’s Agroforestry World Blog A monitoring system has the potential to help governments, research organizations and other groups detect changes in landscapes, such as deforestation and establishment of oil palm plantations. Representatives from government agencies, research organizations and academe in the Philippines attended a forum on the near real-time monitoring of forest landscapes through …
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Decoding deforestation in Brazil and Bolivia - Forests, Trees and Agroforestry

Decoding deforestation in Brazil and Bolivia - Forests, Trees and Agroforestry | Ecosystèmes Tropicaux | Scoop.it
By Pablo Pacheco, Coordinator of Flagship 3 of the CGIAR Research Program on Forests, Trees and Agroforestry, originally published at CIFOR’s Forests News Recently, I came across a much publicized article in The New York Times about the impact of two of the world’s biggest grain traders, Cargill and Bunge, on deforestation trends in the agricultural frontiers of Brazil and …
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

La forêt d'Afrique centrale actuelle est un héritage de l'histoire humaine du XIXe siècle / Actualités - Unité de recherche Cirad - Forêts et sociétés

Une récente publication dans eLIFE, cosignée par Sylvie Gourlet-Fleury (UPR Forêts & Sociétés) remet en cause l'idée d'une forêt tout à fait primaire dans les forêts du Bassin du Congo.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Burundi : nouvelle étape pour le plus grand barrage hydro-agricole du pays grâce à l'appui de la BAD - Médiaterre

Burundi : nouvelle étape pour le plus grand barrage hydro-agricole du pays grâce à l'appui de la BAD - Médiaterre | Ecosystèmes Tropicaux | Scoop.it
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

La sélection participative du sorgho au Burkina Faso : créer de nouvelles variétés avec et pour les paysans - CIRAD

La sélection participative du sorgho au Burkina Faso : créer de nouvelles variétés avec et pour les paysans - CIRAD | Ecosystèmes Tropicaux | Scoop.it
La sélection participative du sorgho au Burkina Faso : créer de nouvelles variétés avec et pour les paysans : Au milieu des années 1990, les sélectionneurs de sorgho adoptent, au Burkina Faso, une nouvelle méthode de création variétale : la sélection participative. Elle est fondée sur un princip
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Redéfinir la forêt pour mieux la protéger

Redéfinir la forêt pour mieux la protéger | Ecosystèmes Tropicaux | Scoop.it
La journée internationale des forêts offre une tribune aux ONG pour appeler la FAO à revoir sa définition de la forêt pour mettre fin à des activités potentiellement écocides.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Transformations agricoles et agroalimentaires - Entre écologie et capitalisme - CIRAD

Transformations agricoles et agroalimentaires - Entre écologie et capitalisme : L’ouvrage synthétise des recherches récentes sur l’évolution de l’agriculture et de l’alimentation dans la dynamique du capitalisme. Il s’appuie sur des approches peu connues en France comm
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Soil carbon 4 per mille | World Agroforestry Centre

The ‘4 per mille Soils for Food Security and Climate’ was launched at the COP21 with an aspiration to increase global soil organic matter stocks by 4 per 1000 (or 0.4 %) per year as a compensation for the global emissions of greenhouse gases by anthropogenic sources.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

ScienceDirect

Publication date: July 2017
Source:Forest Policy and Economics, Volume 80
Author(s): José Carlos Orihuela
This environmental history exposes the main role of the entrepreneurs of environmentality in the assembling of the political economy of nature. Environmentality studies have not told us much about the champions of the green state and how do they succeed in forging new discourses, technologies and practices of forest governance. Discovering nature, embedded in professional networks and economic interests, conditioned by historical contingency, a handful of institutional entrepreneurs collided and ended up building willful alliances to translate the rising global paradigm of participatory forest governance into a specific case. That the encounter of domestic and transnational groups of forest bureaucrats, tropical biologists, nature enthusiasts, eco-tourism entrepreneurs, activist anthropologists and grassroots leaders produced a participatory protected area, friendly towards indigenous peoples rights and forest-based economic development, can only be fully understood when looking at agency in its specific human-ecological context. At Tambopata, nature, economic development and indigeneity, and the governmentalities associated to them, ended up redefined within the process.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

PROIntensAfrica : construire un partenariat de recherche entre Europe et Afrique - CIRAD

PROIntensAfrica : construire un partenariat de recherche entre Europe et Afrique - CIRAD | Ecosystèmes Tropicaux | Scoop.it
PROIntensAfrica : construire un partenariat de recherche entre Europe et Afrique : Selon les estimations actuelles, la population mondiale pourrait atteindre les 9 milliards d’habitants en 2050. La diversification des régimes alimentaires qui accompagnera cette croissanc
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

An introduction to CIFOR's global comparative study on REDD+ (GCS-REDD+) - Forests, Trees and Agroforestry

An introduction to CIFOR's global comparative study on REDD+ (GCS-REDD+) - Forests, Trees and Agroforestry | Ecosystèmes Tropicaux | Scoop.it
Presentation by Maria Brockhaus, Professor of International Forest Policy at the University of Helsinki, Finland, at a workshop on ‘Sharing insights across REDD+ countries: Opportunities and obstacles for effective, efficient, and equitable REDD+ carbon and non-carbon results’, held from 21-23 February 2017 in Naypyidaw, Myanmar. An introduction to CIFOR’s global comparative study on REDD+ (GCS-REDD+) from Center for International Forestry …
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Brazil's National Environmental Registry of Rural Properties: Implications for Livelihoods

Publication date: June 2017
Source:Ecological Economics, Volume 136
Author(s): Suhyun Jung, Laura Vang Rasmussen, Cristy Watkins, Peter Newton, Arun Agrawal
In Brazil, the Cadastro Ambiental Rural (CAR) is currently being implemented. This policy aims to geo-reference all properties and promote monitoring of, and compliance with, natural vegetation conservation requirements. Scholarly efforts and policy attention have so far concentrated on possible environmental impacts hereof, while the attention devoted to how the CAR might affect farmers' livelihoods has been limited. In this paper, we evaluate potential livelihood impacts of the CAR and programs that facilitate CAR registration. We do so by developing a conceptual framework and using evidence from semi-structured interviews with key stakeholders including farmers, governments, and funding agencies. We find that while the CAR and programs facilitating CAR do not have explicit livelihood impact goals, they nonetheless affect livelihoods, both positively and negatively, depending on the initial amount of natural vegetation on farmers' properties, farmers' access to credit and infrastructure, and changing market conditions. We argue that environmental interventions and policies need to consider potential livelihood impacts, especially if the policy intervention area has high poverty rates.
more...
No comment yet.
Scooped by AgroParisTech Documentation Annabelle Filatre
Scoop.it!

Celebrating gender and biodiversity - Forests, Trees and Agroforestry

Celebrating gender and biodiversity - Forests, Trees and Agroforestry | Ecosystèmes Tropicaux | Scoop.it
By Marlene Elias (Bioversity International) On the occasion of International Women’s Day, Bioversity international has launched a series of factsheets on “Creating mutual benefits: examples of gender and biodiversity outcomes from Bioversity International’s research”. The publication features six case studies carried out by Bioversity International with local NGOs and partners. Three of these take place in forest and agroforestry landscapes, …
more...
No comment yet.