Distribution Patterns and Community Structure of pelecypoda in Aquatic ecosystems Seagrass Pengudang Village By District Teluk Sebong Bintan regency of Riau Islands
Mahasiswa Manajemen Sumberdaya Perairan, FIKP UMRAH Nurita_e90@ymail.com
Dosen Manajemen Sumberdaya Perairan, FIKP UMRAH, email@example.com
Tengku Said Raza’i
Dosen Manajemen Sumberdaya Perairan, FIKP UMRAH, firstname.lastname@example.org
Seagrass ecosystems is the good habitat of aquatic biota that like of Pelecypodas. Aktiviti many capture of pelecypoda in the sea waters will give impacts to distribution patterns and structure community on that pelecypoda in seagrass ecosystems pengudang village. The purpose of this research is to know the distribution patterns and structure community on theat pelecypoda in seagraas ecosystems and to know the densities relationship between seagass and pelecypoda in these waters. The method will by random sampling and plots were taken by 25 scattered in waters seagrass ecosystems pengudang village. Quadrant with a size of 0.5 x 0.5 meters according to the guide kepmen LH no 200(2004). From the research obtained 8 types pelecypoda, diversity value is 2.58 categories of moderathes, value of uniformity is 0.86 categoryi kind of uneven uniformity, The dominance indeks is 0.21 category high species dominance. Of the distribution pattern of 25 plots describe the group distribution and for the species there are two random and group. Type of seagrass found there are 5 types and waters conditions at research place classified either according to the Decree of the Minister of Environment of Sea Water Quality Standard for Marine Life, kepmen LH no 200(2004), III) and existing seagrass types can tolerate the water of the quality. type of substrate there is the kind of fine sand mixed substrate kerikis slightly. Realitionship of seagass density and pelecypoda density is negative with a one-unit increase in seagrass will decrease 0.0064 density pelcypoda. The results of obtained from a sample regression equation with a confidence level of 95% and 96% the value of R2.
KEY WORDS: Seagrass Ecosystems, Pelecypoda, distribution patterns, community structure