DENSITY OF NERITIDAE IN THE COASTAL WATERS OF SERI VILLAGE, AMBON CITY

These marine natural resources include various types of fish, molluscs, and crustaceans. Maluku is a waters rich in benthic organisms, the coastal environment of Seri village can be said to be productive which shows various types of resources that can be utilized continuously in the presence of various types of marine organisms or marine biota such as Nerita. This research is a form of scientific contribution to learning marine biology. This research is a descriptive type of research, to describe or describe information about the density of Neritidae in the coastal waters of Seri Village which is made in the form of tables and figures. The results of the calculation of the density of Neritidae in the coastal waters of Desa Seri which were carried out as a whole from 3 transects found 7 species, 1 family, 1 genus and 207 individuals in the phylum Mollusca. By calculating the density on the coast of Seri Village, the values ​​for each species are as follows: Nerita squamulata is 0.001833, Nerita chamaeleon is 0.002167, Nerita maxima is 0.002167, Nerita polita is 0.026333, Nerita albicilla is 0, 0015, Nerita planospira was 0.000333 and Nerita patula was 0.000167 with a total absolute density of 0.0345. according to the density category according to Cox (1967) which explains that 0 = no density, 1-10 = less density, 10-20 = sufficient density and > 20 = very high density, thus it can be concluded that Neritidae in coastal waters of Seri village is no density

Study of the abundance and diversity of crustaceans in the ecosystem mangrove forest of Ambon Island

Crustaceans are very abundant in mangrove forest ecosystems and are still poorly documented. Therefore, this study aims to reveal the abundance and diversity of crustaceans in the mangrove forest ecosystem of Hutumuri Beach and Suli Beach, Ambon Island. Crustacean data collection was done by determining the plot using random sampling method. Determination of crustacean abundance using individual formulations per unit area or per unit volume, while crustacean diversity was calculated using the Shannon-Wiener equation. The crustaceans found in the mangrove forest ecosystem of the Hutumuri and Suli beaches were 56 individuals, consisting of 7 families and 11 species. The abundance of crustaceans in the mangrove forest ecosystem of the Hutumuri coast and the coast of Suli was 0.29 ind/m2 and 0.27 ind/m2, respectively. For the diversity of crustacean species in the mangrove forest ecosystem of the Hutumuri coast and the Suli coast, respectively, 1, 176807 in the medium category and 0.78526 in the low category

THE INFLUENCE OF TEACHERS TEACHING STYLES ON MOTIVATION AND LEARNING OUTCOMES OF BIOLOGY ON THE CONCEPT OF THE HUMAN CIRCULATION SYSTEM OF CLASS VIII STUDENTS OF SMP HANG TUAH LANTAMAL IX AMBON

Education and teaching focusing on the interaction between educators with educated or teachers with students. The interaction of teachers and teaching in improving stundent learning outcomes especially on biological materials, desperately needs attention, motivation, and interest. It almost entirely uses a good teaching style. This study was conducted for 1 month starting from 05th of November until 05th of Desember 2021. The purpose of this study is to influence of teacher’s teaching style (Variable X) and motivation of student learning outcomes in Biology at SMP Hang Tuah Lantamal IX Ambon by taked sample of 35 respondents, are the students of class VIII. The results showed that there is a significant influence or perfect correlation between teacher teaching styles on the motivation of learning results ofhuman’s blood circulation system in grade VIII of SMP Hang Tuah Lantamal IX Ambon. It is provenby the product moment correlation value of pearson rarithematic = 1.00 when compared with rtable = 0, 334 and according to table interpretstion of pearson correlation coefficient. Thus the hypothesis H1 which states there is a significant influence between teacher teaching style on student learning outcomes motivation