Climate change impact on the sustainable use of Lake Tanganyika fisheries  (CLIMFISH)

Start-End 01/07/2004 -  31/12/2006
Programme STEREO 1
Contract SR/00/024
Objective This project is the continuation of a former project, CLIMLAKE started in 2001, extending until the beginning of 2005 and also financed by the SPO (EV/13/02). This project addressed the recent concerns about climate variability (ENSO) and its effect on ecological processes in Lake Tanganyika. The main components of the project were environmental monitoring, study of present plankton, geochemical studies, diatoms analysis in sediment cores and development of an eco-hydrodynamic model. In this project, the potential contribution of Remote Sensing (RS) data was underestimated. This is why the CLIMFISH project was launched. The general objectives of CLIMFISH are (1) to investigate the impact of recent environmental changes on the fisheries of Lake Tanganyika using weather and limnological monitoring, fisheries statistics, remote sensing and eco-hydrodynamics modelling; (2) to use those results and the ECO-SLIM model, developed in the former research program, under expected climate change most likely scenarios to evaluate the future of the fisheries at Lake Tanganyika; (3) to evaluate the feasibility of developing an ECO-FISH model as a forecasting tool for the managers of Lake Tanganyika fisheries.
Method
  1. Field monitoring (weather, limnology, fish statistics and biology) from November 2004 to April 2006 (continuation of a 3 years CLIMLAKE monitoring).
  2. Development of a remote sensing methodology for the determination of lake surface T° and Chl-a.
  3. Refinement and validation of the ECO-SLIM model using RS and monitoring data.
  4. Comparison of the model outputs with fish statistics for the recent period (2002-2006).
  5. Use of historical data (environment and fisheries) to check model adequacy.
  6. Use of model approach for preliminary scenarios useful for fisheries predictions.
  7. Evaluation of the possibility and usefulness to incorporate the fish variable into the model.

    Concerning the RS aspects of the research, the “water case” has been analyzed. The different MODIS product levels and several correction methods to extract water leaving radiance and Chl-a concentration have been tested using the cruises and permanent stations data. Daily cloud free images have been chosen, downloaded and batch-processed to produce a 3.5 years data base.
Result RS data download nearly finished (MODIS only)
Test of several algorithms of atmospheric correction and Chlor-a concentration computation
Batch processing in course RS Missing data filling planned in December 2005
Validation using the permanent stations of Kigoma and Mpulungu (if possible)
RS output exchange with other teams (fisheries-limnology and modelling) planned for December 2005
RS output interdisciplinary (fisheries-limnology and modelling) interpretation in 2006
Website link
Team
Team Member: CORNET Yves ULg - Laboratoire SURFACES
Team Member: DESCY Jean-Pierre Université de Namur - Unité de recherche en biologie environnementale et évolutive (URBE)
Team Member: DELEERSNIJDER Eric UCL - Institut d’Astronomie et de Géophysique Georges Lemaître
Project Leader: JALET Philippe Direction Générale de la Coopération au Développement/Belgische Ontwikkelingssamenwerking
Project Leader: PLISNIER Pierre-Denis MRAC/KMMA - Section of Mineralogy and Petrography
Location lake Tanganyika (Burundi, Congo, The Democratic Republic of the, Tanzania, Zambia)
Sensors used MODIS
Applications Weather & climate
Oceans & coasts
Hydrology & freshwater resources
Environment & Ecology
Economic issues
Related presentations
Related publications Stereo 1 - Research Programme for Earth Observation - Long distance comprehending
Datasets used