The diminution of the river, as might be expected, has pitted the upper and lower basins of the river against one another, although the parties all say publicly that they want a collaborative solution to the problem.

Source: https://bizwest.com/2023/08/06/from-bucolic-to-contentious/

There has been a progressive diminution of curatorial staff, researchers and assistants, whereas the numbers of specimens have not similarly declined.

Source: https://southafricatoday.net/environment/what-does-the-decline-of-natural-history-museums-mean-for-biodiversity-conservation-commentary/