标题：THE BIODIVERSITY OF GASTROPODS IDENTIFIED IN THE MANGROVE FOREST OF BABAN VILLAGE,GAPURA DISTRICTS SUMENEP REGENCY AS THE RESOURCE OF LEARNING BIOLOGY
摘要：Gastropods are the animals that utilize their gastro as their only medium for making a movement – it is derived from the words gastro (thing like a tummy,stomach,and you name it) and pods (thing like feet to walk or to make a movement). The existence of that class,nowadays,is being threatened due to the damage that happens to the ecosystem of mangrove forest and is caused by land conversion. As the consequence,it causes an ecological damage as well,which is allowed to obstruct the evenness of the ecosystem of mangrove forest. In addition to the aforeposed problems,the lack of information regarding the diversity of Gastropods,particularly at the most isolated area,such as Baban Village,Sumenep Regency,is also considered as another problem that might negatively affect the existence of Gastropods. Therefore,this research aimed to investigate the diversity and the community structure of Gastropods within the area of mangrove forest of Baban Village,Gapura Districts,Sumenep Regency. Moreover,the emphasis of this research was on the Gastropods that are living within the area of mangrove forest. The researcher,furthermore,employed descriptive research. The research itself was conducted on April 17th to April 24th once the tide went low by occupying randomized sampling method through square transect. The data,afterwards,were collected right after the direct observation on the predetermined population was completed. The research revealed that Gastropods that had been already found out comprised 11 species,namely Nerita fulgurans,Cassidula aurisfelis,Telescopium telescopium,Cerithidea quadrata,Ceritiopsis sp,Littroraria scabra,Raphitoma purpurea,Alvania sp,Littoraria melanostoma,Terebralia sulcata,dan Littorina sp. Meanwhile,the community structure of Gastropods was based on the following things: (1) the highest density index of Gastropods went to the species Terebralia sulcata (converted to 2.17 individual per square meter),whereas the lowest one was the species Nerita fulgurans (accumulated to 0.25 individual per square meter). (2) The highest importance value index were achieved by the species Terebralia sulcata,which constituted 0.33%,while,the lowest one was attributed to the species Nerita fulgurans,which signified 0.05%. (3) The diversity index was categorized as standard,which was converted from 1.84 to 2.16. (4) The index of evenness illustrated that Gastropods were nearly evened in every single station,started from 0.77 to 0.90. At last,(5) the dominance index communicated that,in Gastropods class,there were not any dominant species. Expectedly,the result of this research can be utilized as the resource of learning Biology,in the form of Booklet..
其他摘要：Gastropoda merupakan hewan yang bergerak dengan menggunkan perutnya (gaster= perut dan podos=kaki) yang saat ini mulai terancam keberadaannya karena rusaknya ekosistem hutan mangrove karena konversi lahan,dampak ekologis yang ditimbulkan adalah mengganggu
