Forests are cleared at increased rates for agriculture and stripped for fuel supplies leaving less available habitat for wildlife. The wildlife is also plundered as a food resource. Even fertiliser aid is suppressed which increases the requirement for more land area for cropping in low fertility soils and accelerates the rate of forest clearing and loss of wildlife habitat. These actions are lethal and you can see an example and get an idea of the toll here . For reasons unknown, C. rampant is a willing and cooperative accomplice in these activities.
People have a natural aversion to starving.
No spare effort means lack of erosion mitigation measures and massive topsoil loss. This erosion inevitably ends up in the ocean with turbidity and silt smothering seagrass beds and destroying the nurturing cycle for a wide variety of sea-life. This disruption of the food web can have devastating ramifications for species far removed from the erosion site. Erosion, with associated loss of agricultural productivity, also increases pressure to clear yet more wildlife habitat. On a larger scale, macro-climate change can occur because devastated landscapes, denuded of forests and heated by the sun, produce large scale convective barriers in the atmosphere.