Observed impact of climate change on abundance and distribution of Nile fish in Sudan during the period (2001-2020)

Abstract

A reduction in species of Nile fish was observed during (2001-2020). Annual temperature revealed high levels (29 to 31 ˚C), with fluctuation between 2001 and 2008, decreased from 2009 to 2000. Rainfall fluctuated between 2001 and 2007, with highest peaks in 2019 and 2020. Positive correlation (r = 0.34402) was found between temperature and catch. Catch increased with decreased temperature. Negative correlation (r = -0.15869) was found between catch and rainfall, high level of catch was recorded with low rainfall. The results indicated changing in climate within Sudan over time. To tolerate climate change for the next twenty years, the Nile fish will either modify their body structure and function, or even stand the risk and extinct from the Nile. Future changes in the productive capacity of the Nile need effective and progressive responses to the urgent threat of climate change, through mitigation and adaptation measures and sustainable management practices.