This habitat is particularly important for invertebrates living in dead wood; small mammals, such as bats; lower plants, such as fungi, mosses, and lichens; and several bird species.
Mae'r cynefin hwn yn arbennig o bwysig ar gyfer infertebratau sy'n byw mewn coed marw; mamaliaid bach, fel ystlumod; planhigion is, fel ffyngau, mwsoglau a chennau; a sawl rhywogaeth o adar.