馬達加斯加因砍伐及發展等因素令森林破碎，影響林裡資源的質量及多樣性。在情況較嚴重的森林，瀕危的冕狐猴生長緩慢，身體除了較瘦弱，亦有因營養不良而致死的情況，長遠會影響到牠們的數量。

deforestation and developments are turning some of the rainforests in Madagascar into low-quality habitats for the wildlife. In some of the worst degraded forests, endangered diademed sifakas appeared to be in poor health and showed stunting; beside being skinnier, some sifakas even died because of poor nutrition. this could affect their population in long-term.

Study finds lemurs in degraded Madagascar forest skinny and stunted