[2] Liguasan Marsh is also an important wetland, supporting resident or non-breeding populations of various waterbirds such as herons, egrets, rails, shorebirds, and ducks.

Among these species are a Mindanao-endemic subspecies of the Little grebe (Tachybaptus ruficollis cotabato) and the Comb-crested jacana, the latter being observed only in this region within the Philippines.

[4] The marsh is also a key livelihood source for more than 112,000 Maguindanaon families, who rely on fishing during high water periods and agriculture during the dry season.

[2] The marsh also faces significant threats from illegal fishing, deforestation, and land conversion for agriculture, which have caused habitat loss and degradation.

A study on the environmental status of the marsh identified high levels of phosphate and mercury in its waters, correlating these pollutants with land-use changes in surrounding municipalities.