Knowledge of wetland hydrology and quantification of water inputs and outputs are Prerequisites to understanding wetland environments and determining their vulnerability to change. To get a better understanding of the dynamics of wetland change in the Usangu Plains, a study was conducted to: a) investigate the effects of human interventions on the wetlands, and b) determine the amount of dry season inflow required to maintain environmental flows downstream of the wetlands.

To meet growing population demands for food and other agricultural commodities, agricultural land-use intensification and extensification seems to be increasing in the Abbay (Upper Blue Nile) basin in Ethiopia. However, the amount, location and degree of suitability of the basin for agriculture seem not well studied and/or documented. From global data sources, literature review and field investigation, a number of agricultural land suitability evaluation criteria were identified.

The transmission of malaria in Sri Lanka is unstable; its incidence greatly fluctuates from year to year and exhibits important variations within a year. Identification of the underlying risk factors of malaria is important to target the limited resources for the most-effective control of the disease. This report presents the first results of a project on malaria risk mapping to investigate whether this tool could be utilized to forecast malaria epidemics.

The purpose of this study was to identify risk areas in Thailand where insecticide resistance in malaria mosquitoes might develop as a consequence of crop protection activities in agriculture. The study provides guidelines on how to delineate risk areas. A review of insecticide resistance in disease vectors and the potential role of agricultural insecticides is presented.

Proceedings of a workshop held in Embilipitiya, Sri Lanka, 29th March 2001. Presents preliminary findings on malaria patterns and possible risk factors and describes the progress of IWMI research towards developing a risk map for Sri Lanka. It also contains presentations by Regional Malaria Officers, and other officials involved in malaria control, on areas of high malaria risk within their districts.

This working paper contains the proceedings of the workshop on ?Malaria risk mapping in Sri Lanka?implications for its use in control? that was held on May 25, 2001 at IWMI Headquarters in Colombo, which was a follow up to the workshop conducted on March 29, 2001 in Embilipitiya (Klinkenberg 2001). The workshop in Embilipitiya was organized at the local level to discuss the results of the malaria risk mapping work carried out by IWMI in the Uda Walawe region of Sri Lanka.