"Constructing a social–ecological systems (SES) database of the GGW trajectory in Senegal"
There is no existing data base compiling the biophysical, social and ecological parameters of the zone to support land and resource management along the GGW path. The main objective of WP1 is to construct a social-ecological data base management system (DBMS) that is both “fueled” and utilized by researchers and land managers alike.
It will be operated by a user-friendly geographic information system (GIS) platform that will facilitate our understanding of the complex relationships among geo-localized social and ecological parameters in the different Sahelian SES.
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| Spot-6 scene centered on Widou Thiengoly (18 Sept. 2016) (background image : Google Scholar) |
Task 1: Data-mining for the Senegalese GGW
This task will consist in accessing, gathering, and assembling all available data considered as essential for knowledge building of the SES underlying the GGW trajectory in Senegal. Data will be extracted from a number of difference sources: Senegalese national institutions, scientific literature, GGW practitioners and researchers.Task 2: Investigation of temporal landscape changes along the GGW
This task aims to gain a better understanding of the evolution of GGW landscapes using landscape ecology methodologies. Large sets of LANDSAT and SPOT images are available for the entire GGW area from 1979 to present :i) At the regional scale (100 km2), to identify the main structural elements of the landscape and their evolution over time;
ii) At the local scale (km2), to focus on specific “SES windows” and the detection of more precise changes in the vegetation structure and density, water resource distribution (ponds), village expansions, houses and permanent camp locations, etc.
Task 3: Field data acquisition
The objective of this task is to obtain field data that will provide a more accurate description of SES operating along the GGW path. Field data acquisition will focuse on kilometric size “windows” according to two criteria:i) to reflect the diversity of GGW SES (i.e. contrasting land use including silvopastoral, agroforestry, and agriculture-dominated) ;
ii) to provide complementary knowledge of the social-ecological environments in proximity of the sites selected for field studies in WP2 and WP3
Task 4: Regular database updating
Regular updating of database will occur for the full duration of the project. We will focus on:i) modifications/additions as a result of ground-truthing;
ii) new data for any of the parameters as they become available;
iii) integration of data generated from others WPs and/or addition of specific data sets requested by them.
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