Moluska adalah salah satu bioindikator pencemaran lingkungan yang sebagian besar spesiesnya di Indonesia belum banyak diungkap sehingga menarik untuk dipelajari lebih dalam. Moluska dapat ditemukan di perairan laut dan tawar di Pantai Carita, Pandeglang. Tujuan dari penelitian ini adalah untuk mempelajari struktur komunitas Moluska di perairan laut dan tawar serta penentuan kualitas perairan. Penelitian dilaksanakan di Kawasan Hutan dengan Tujuan Khusus (KHDTK), Kecamatan Carita, Kabupaten Pandeglang, Banten. Metode penelitian yang digunakan adalah kuantitatif deskriptif. Sampel Moluska dikumpulkan dari tiga kuadran dengan masing-masing ukuran 1 × 1 m 2 berdasarkan garis transek. Identifikasi dan analisis data dilakukan berdasarkan kelimpahan, indeks keanekaragaman dan dominansi. Sampel yang teridentifikasi didominasi oleh Gastropoda dibandingkan Bivalvia. Indeks keanekaragaman Moluska di perairan laut adalah 0,37, 0,36, dan 0,32, sementara di perairan tawar adalah 0.36, 0.36, dan 0.37. Indeks dominansi Moluska di perairan tawar adalah 0.12, 0.21, dan 0.04 sedangkan di perairan tawar adalah 0.08, 0.10, dan 0.17. Spesies melimpah di perairan laut adalah Laevipilina cachuchensis, Rhinoclavis vergatus, Mactra grandis, Trachycardium subrugosum, dan Morula margariticola sedangkan spesies dominan di perairan tawar adalah Thiara Scabra. Kualitas dari perairan tawar maupun laut termasuk kategori baik untuk mendukung kehidupan Moluska.
The current learning process emphasizes the development of student skills as life skills, one of the goals is effective communication skills that are helped through knowledge from reading results. A syntactic integration between Jigsaw learning strategies and Reading, Questioning, Answering or called JiRQA learning strategies based on motivation level of student learning outcomes can help students to face the demands of the 21st century. This study aims to measure the effect of using JiRQA learning strategies based on motivation level of student learning outcomes. The research method is quasi-experimental. Data analysis was performed in the normality test using the Kolmogorov-Smirnov test, while the homogeneity test was carried out with the Bartlett test then for the hypothesis test carried out with a 2 x 2 factorial experimental design. The sample size was 18 experimental class students and 18 control class students in SMAN 11 Pandeglang. The results of the study showed normal and homogeneous (p> 0.05). The results of the study using two-ways ANAVA test obtained data that the value of p = 0.014, which means p <0.05 (starting Ho). And make conclusions there is an interaction between JiRQA learning strategies based on the level of motivation on learning outcomes. Similar research needs to be done to get more information. The research findings are the influence of syntactic integration between Jigsaw and Reading, Questioning, Answering learning strategies on learning results based on motivation level.
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