Diversity and Distribution of Molluscs in the Intertidal Zone of Nglambor Beach, Gunung Kidul, Yogyakarta

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Table 1.

Diversity of Molluscs in Nglambor Beach.

Zone	Class	Family	Species	∑ Individuals		FoI (% )
Zone	Class	Family	Species	Stations I	Stations II	FoI (% )
High Tide	Bivalvia	Arcidae	Barbatia reeveana	6	1	100
		Isognomonidae	Isognomon bicolor	5	3	100
		Mytilidae	Modiolus philippinarum	2	‐	50
		Pectinidae	Pecten sp.	4	4	100
	Gastropoda	Conidae	Conus biliosus	1	‐	50
		Conidae	Conus coronatus	12	6	100
		Cypraeidae	Cypraea carneola	7	5	100
		Mitridae	Mitra litterata	3	5	100
		Muricidae	Thais hippocastanu m	10	16	100
		Muricidae	Thais tissoti	5	9	100
		Muricidae	Thais turbinidae	4	3	100
		Neritidae	Nerita incerta	7	10	100
		Neritidae	Nerita signata	5	2	100
		Trochidae	Trochus radiatus	14	7	100
		Turbinidae	Turbo bruneus	11	6	100
	Total			96	77
Middle Tide	Bivalvia	Arcidae	Barbatia reeveana	3	2	100
		Isognomonidae	Isognomon bicolor	1	3	100
		Pectinidae	Pecten sp.	1	2	100
	Gastropoda	Aplysiidae	Aplysia dactylomela	1	‐	50
		Conidae	Conus coronatus	5	7	100
		Cypraeidae	Cypraea annulus	1	1	100
		Cypraeidae	Cypraea carneola	6	‐	50
		Cypraeidae	Monetaria annulus	1	‐	50
		Muricidae	Thais tissoti	7	18	100
		Muricidae	Thais turbinidae	3	13	100
		Neritidae	Nerita incerta	4	4	100
		Neritidae	Nerita signata	2	4	100
		Turbinidae	Turbo bruneus	6	9	100
		Trochidae	Trochus radiatus	4	2	100
	Total			45	65
Low Tide	Bivalvia	Isognomonidae	Isognomon bicolor	2	‐	50
	Bivalvia	Pectinidae	Pecten sp.	1	‐	50
	Gastropoda	Conidae	Conus coronatus	‐	10	50
		Muricidae	Thais distinguenda	‐	1	50
		Muricidae	Thais hippocastanu m	‐	6	50
		Muricidae	Thais tissoti	3	‐	50
		Muricidae	Thais turbinidae	2	‐	50
		Neritidae	Nerita incerta	2	‐	50
		Turbinidae	Turbo bruneus	4	‐	50
	Total			14	17

Note: Total number of individuals (∑ Ind.) and Frequency of Incidence (FoI) are presented.

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