How does agriculture affect biodiversity?
All forms of farming have major impacts on biodiversity, especially when new land is brought into cultivation. Habitats are destroyed and new ecological niches created which allow typical farmland species of birds, insects, mammals and weeds to establish themselves.
Changes in how the land is managed – particularly what crop is grown and the time of year it is sown – make a difference to the biodiversity year by year. Changing the way crops are managed, including for example the use of GM herbicide-tolerant and insect-resistant plant varieties, can also influence this.