Evaluation of chlorophyta diversity in tidal coastlines of Bushehr province

Marine green macroalgae are very important ecologically and strategically, especially in pharmaceuticals, food industries, agriculture, and phycoremediation. The natural habitat of green macroalgae in the coastal tide zones of Bushehr province is rocky and coral, and the most important reason is that macroalgae need a stable place to grow. Because of this, the macroalgae are not able to grow on sandy beaches. However, in parts of the sandy beaches pebbled to break waves, a small number of green macroalgae species have grown sparsely. The lack of a written reference on the diversity of species of green macroalgae growing in coastal tide zones of Bushehr province led to the collection of green seaweed species from seven counties adjacent to the coastline since 1996. The species diversity of 34 identified species of Chlorophyta in Deylam, Genaveh, Bushehr, Tangestan, Dayyer, Kangan, and Asaluyeh counties is 4, 7, 27, 12, 17, 13, and 15, respectively. Some of the reasons for species richness in Bushehr counties compared to other counties can be attributed to the greater area of rocky and coral habitats and the existence of a stable bed for its rhizoids attachment and growth of green macroalgae. The reasons for decreased species richness of green macroalgae in Deylam and Genaveh counties can be attributed to pollution from oil facilities of Imam Hassan and other facilities adjacent to Bushehr province, the entry of part of urban and industrial wastewater to the coast, and also sandy coasts.