M. Cherlet

M. Cherlet
European Commission | ec

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31
Publications
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794
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Publications

Publications (31)
Article
Il Sahel è un'area geografica che, nel tempo, è stato oggetto di molteplici definizioni, climatico-botaniche e politiche: i suoi limiti sono stati disegnati in modi molto diversi. Non mancano posizioni di aperta contestazione del senso stesso di questa denominazione e della relativa delimitazione. Il lavoro proposto prova a immaginare una cartograf...
Technical Report
Full-text available
Uma seca persistente e extrema iniciada em 2019 está ainda em curso e tem vindo a afetar a bacia de La Plata, a segunda maior bacia hidrográfica da América do Sul e a quinta maior do mundo. Apresentamos aqui uma panorâmica do evento, do seu contexto climatológico, da sua evolução espaciotemporal, das suas causas e características, bem como dos seus...
Article
Full-text available
The United Nations Sustainable Development Goal 15 (Life on Land), adopted the indicator 15.3.1 to measure the Land Degradation Neutrality. This indicator is based on three sub-indicators: (1) Trends in Land Cover, (2) Land Productivity and (3) Carbon Stocks. The Land Productivity sub-indicator refers to the total above-ground Net Primary Productio...
Article
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One of the possible consequences of projected global warming is the progressive enlargement of drylands. This study investigates to what extent population and land-use (forests, pastures, and croplands) are likely to be in areas turning arid in the 21st century. The first part of the study focuses on the climatological enlargement of arid areas at...
Preprint
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As part of the UN Sustainable Development Goal 15 (Life on Land), the indicator 15.3.1 is adopted to measure the Land Degradation Neutrality. Land Degradation Neutrality is addressed as stable —or increasing— state in the amount and quality of land resources required to support ecosystem functions and services and enhance food security during a cer...
Code
LPDynR uses 'phenological' and productivity-related variables derived from time series of vegetation indexes, such as the Normalized Difference Vegetation Index, to assess ecosystem dynamics and change, which eventually might drive to land degradation. The final result of the Land Productivity Dynamics indicator is a categorical map with 5 classes...
Chapter
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Soils are both sinks and sources of C with great potential to mitigate climate change. Global estimates indicate that they contain between 1,206 Pg of soil organic carbon (SOC) to 1-m depth to more than 1,550 Pg C, which is twice the amount of C present in the atmosphere. Nevertheless the overall the C stocks could reach as much as five times that...
Article
Full-text available
Mapping desertification has proven to be a challenging task. Difficulties derive from its ambiguous definition and the comprehensive integration of various biophysical and socioeconomic indicators that need to be considered in the evaluation process. In the early 1990s, assessments and mapping were based primarily on expert opinions that introduced...
Research
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Provides a preliminary idea of the content of the future World Atlas of Desertification
Article
Full-text available
Observing trends in global ecosystem dynamics is an important first step, but attributing these trends to climate variability represents a further step in understanding Earth system changes. In the present study, we classified global Ecosystem Response Types (ERTs) based on common spatio-temporal patterns in time-series of Standardized Precipitatio...
Article
Drought affects more people than any other natural disaster but there is little understanding of how ecosystems react to droughts. This study jointly analyzed spatio-temporal changes of drought patterns with vegetation phenology and productivity changes between 1999 and 2010 in major European bioclimatic zones. The Standardized Precipitation and Ev...
Article
Full-text available
The present study classified global Ecosystem Functional Types (EFTs) derived from seasonal vegetation dynamics of the GIMMS3g NDVI time-series. Rotated Principal Component Analysis (PCA) was run on the derived phenological and productivity variables, which selected the Standing Biomass (approximation of Net Primary Productivity), the Cyclic Fracti...
Article
The present study demonstrates remote sensing derived phenological and productivity indicators of ecosystem functional dynamism. The indices were derived from SPOT VEGETATION NDVI data on 1 km spatial resolution across the pan-European continent using the Phenolo approach. The phenological and productivity indices explained 78% of the variance in t...
Article
Full-text available
Soil salinity is a global issue and one of the major causes of land degradation. The large scale monitoring of salt‐affected areas is therefore very important to shed light on necessary rehabilitation measures and to avoid further land degradation. We address the productivity limitation of salt‐affected soils across the European continent by the us...
Article
Mapping land degradation and desertification (LDD) at the global scale still is a conceptual and operational challenge. The present study has been performed in the frame of the WAD (new World Atlas of Desertification) initiative. The objective of the paper is to test a structured procedure to identify relevant indicators for an effective representa...
Article
Full-text available
Birds are important components of biodiversity conservation since they are capable of indicating changes in the general status of wildlife and of the countryside. The Pan-European Common Bird Monitoring Scheme (PECBM) has been launched by the BirdLife Partnership in Europe, where the European Bird Census Council has been collecting data from 20 ind...
Article
This paper suggests how the United Nations Convention to Combat Desertification (UNCCD) community can progressively make use of a flexible framework of analytical approaches that have been recently developed by scientific research. This allows a standardized but flexible use of indicator sets adapted to specific objectives or desertification issues...
Article
Following the European Commission's Water Framework Directive all surface waters in EU's Member States must reach a good status by 2015. The evaluation of this status will be partly based on ecological criteria, such as the hydro-morphological quality criteria which also evaluate the structure and condition of the riparian zone. Riparian zones with...
Article
The United Nations Convention to Combat Desertification (UNCCD) is a global treaty that emerged from the Rio Earth Summit and formally took force in 1996. It has now been ratified by 193 countries (known as Parties to the Convention). Yet the UNCCD has gained only modest support from donors, largely due to questions about the science base underlyin...
Article
Successful implementation of a preventive desert-locust control strategy implies early and reliable detection of areas where rainfall and vegetation conditions are suitable for egg laying and hatching and for development. Satellite data provides high-frequency information on these parameters and data is operationally available through the FAO ARTEM...
Conference Paper
Full-text available
The Desert Locust, scientifically known as Schistocerca gregaria, was first reported as a threat to humankind as the eighth biblical plague of Egypt and regular upsurges still occur. To prevent plagues, early detection and immediate control of locust populations are required. Continuous information about locust populations and ecological conditions...

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