Geospatial Techniques-based Weighted Arithmetic Aggregation for Mapping Adaptation Strategies of Fishermen to Climate Change in Littoral Local Government Areas of Delta State, Nigeria

This paper focused on the application of weighted arithmetic aggregation (WAA) and geospatial techniques (GTs) in mapping adaptation strategies of fishermen (ASF) to climate change (CC) in littoral local government areas (LLGAs) of Delta State, Nigeria. Data was sourced from the field sourced 165 fishermen in three LLGAs using network sampling techniques and a well-vetted questionnaire. Data analysis was carried out using GTs, descriptive and inferential statistics in SPSS 22 and Arc GIS 10.8 software. Results showed that 96.4% noticed CC/variation with an annual loss of income from fishing exerting a very severe impact on fishermen. Again, switching to other means of livelihood and/or combining different livelihood activities, increasing fishing frequency and spending more time in the river was very effective ASF. The overall ASF index showed Warri North had high adaptation while Warri South-West LGA recorded low adaptation. The paper recommended the establishment of meteorological stations and CC enlightenment in the area