Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A small concavity or depression between ridges, where rainwater gathers.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Gamilaraay gilgaay ("small water hole").

Examples

  • Microtopography such as gilgai on vertisols and mima mounds on alfisols are important microhabitats.

    Texas blackland prairies

  • Similar to Ecoregion 32a, the shrink-swell clays contain gilgai microtopography with small knolls and shallow depressions that can influence the composition of plant communities.

    Ecoregions of Texas (EPA)

  • Gamagrass-switchgrass (Tripsacum dactyloides-Panicum virgatum) prairies are associated with bottomland sites throughout the region, and are also found on upland sites of the northern main belt vertisols where they are especially associated with gilgai microtopography.

    Texas blackland prairies

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