Because of administrative financial difficulties, their environmental conservation budget is limited. Many wildlife conservation activities are even limited to private lands. This has led to a reaction, in which many voices have arisen claiming that more human energy and material should be focused on protecting entire ecosystems and habitats.
美國足為殷鑑：由於財政困窘、保育預算有限，許多物種保育更限制了私人土地利用，導致反彈，因此出現應把更多人力、物力著力在保護完整生態系統，及棲息地上的聲音。