The impact of overharvesting on ecosystems primarily includes the depletion of resources, leading to altered food webs and loss of biodiversity. It can result in the extinction or decline of species, disrupting the ecological balance. Overharvesting can affect forests, fisheries, and wildlife populations, diminishing their ability to recover naturally and weakening ecosystem functions. Additionally, it can lead to habitat destruction and increased vulnerability to climate change. Sustainable management practices are essential to mitigate these effects and ensure the health and resilience of ecosystems for future generations.