A healthy ecosystem, diverse and balanced number of species exists to maintain the balance of an ecosystem. In an ecosystem, all the species depend on each other directly or indirectly. So to make a more efficient, productive and sustainable ecosystem, it is important to maintain high species diversity. Support local and regional projects aimed at tackling biodiversity loss. Buying fewer products and making sure the products you do buy minimize the impact on biodiversity. Investing in ways that promote biodiversity and reducing waste of consumer goods: food, clothes, electrical appliances, etc.
Generally speaking, greater species diversity (alpha diversity) leads to greater ecosystem stability. This is termed the "diversity–stability hypothesis." An ecosystem that has a greater number of species is more likely to withstand a disturbance than an ecosystem of the same size with a lower number of species.