Macroalgae diversity at Porok Beach, Gunungkidul, Yogyakarta, Indonesia

Indonesia is one of the world's richest nations in terms its biodiversity. One biological resources that has an important role marine life macroalgae. As a primary producer, macroalgae play coastal environment. Porok Beach beach Gunungkidul district Yogyakarta, Java Island, Indonesia. dominated by rocky substrate, which would be ideal substrate for The development areas as tourism destination feared to have impact on Comprehensive efforts are required protect coastlines sources germplasm will ensure survival biodiversity Gunungkidul. So, it necessary study diversity obtain preliminary data conserve. area. This aims monitor presence Beach. Purposive random sampling was used study, took place October 17th, 2020. Water temperature and pH ecological parameters measured. Seaweed specimens were collected only from those attached (no floating collected) during low tide then placed ziplock plastic bags. Macroalgae species identified determine based taxonomic keys using FAO identification Guide Fishery From results home 17 macroalgae, eight classified Chlorophyta, 3 Phaeophyta, 6 Rhodophyta.