Temporal variation in pond use and breeding success for ducks in French fishpond regions: on possible consequences of a decline in fish farming
Fish farming abandonment or extensification may theoretically lead to contrasting consequences for waterfowl breeding in fishpond complexes.We investigated the variation of four indices of duck density or breeding success in pond samples of three main French fishpond areas: Dombes, Forez and Brenne, along with recent changes in fish farming managem