Project-based learning to improve the conceptual knowledge of students in environmental microbiology topics F I Taharu, L Aba, M Iksan, Kusrini, Nurwahida, J Gazalin, Duriani, T Ibrahim Iop Conference Series Earth and Environmental Science, 2019 Students have difficulty mastering conceptual knowledge on the topic of environmental microbiology so learning is needed that can involve students in learning contexts that can enhance their conceptual knowledge. Project-based learning is expected to overcome these learning problems. The approach used in this study is a qualitative approach and this type of research is Classroom Action Research (CAR). The results of the study indicate that the average conceptual knowledge of students has increased in each cycle. Students show a positive response to Project-Based Learning. there are difficulties encountered during the learning process such as, (a) difficulties in assisting all groups at any time with action in the form of implementing team teaching in learning; (b) difficulties in mastering learning material with completion measures in the form of the application of peer tutors; and (c) difficulties in monitoring plans that have been made by students with action in the form of asking students to document each work.
Structure of echinoderm community in Nirwana Beach, used as learning media on the beach ecosystem Samritin, Agusalim, M Iksan, La Aba, F I Taharu, Manan, S Batlajery, R Tambaru Iop Conference Series Earth and Environmental Science, 2019 Abstract This study aims to determine the structure of the Echinoderms Community in the Coastal Area of Nirwana Beach, Baubau City, which is used as a media for the distribution of coastal ecosystems. The method used in this study is a survey method. Data were taken using purposive sampling technique and analyzed in quantitative descriptive. Calculations are used in quantitative data processing using the Shanon-Weaver Diversity formula, Simpson dominance and Darrell’s abundance. Vodopich is the number of individuals per unit area. Environmental factors measured are temperature, salinity, and pH. The results showed that at the two research sites namely on the Nirwana beach of Baubau City, Echinoderms found consisted of 4 classes, namely Holothuroidea, Ophiuroidea, Echinoidea dan kelas Asteroidea. The diversity index of Echinoderms found in the two research sites shows differences and if based on the diversity index benchmark values, both locations are in the low diversity category (H < 1,0) which means that productivity is very low as an indication of heavy pressure and an unstable ecosystem. The dominance value of Echinoderms indicates that at the Nirwana beach location no one has dominated. While the abundance value of each class in Echinoderms shows that at the beach location is still very low. This is caused by excessive community activities.
The diversity of mangrove forests in Kumbewaha, Buton Island, Indonesia M Iksan, L Aba, F I Taharu, A Alfian, D P I Ardyati, Jumiati, W O D Alzarliani, Hardin, S H Larekeng Iop Conference Series Earth and Environmental Science, 2019 Abstract This study aims to determine the diversity of mangroves in Kumbewaha, Buton, Indonesia. the method used in this study is line transect, data retrieval with roaming. The number of mangrove species found was 20 species and 17 mangrove tribes including, Acrostichum aureum (L.), Aegiceras corniculatum (L.) Blanco, Allophylus cobbe (L.) Raeusch, Avicennia marina (Forssk.) Vierh, Bruguiera gymnorhiza (L.) Lam, Ceriops tagal (Perr.) C.B.Rob, Colubrina asiatica (L.) Brongn, Cordia sebestena (L.), Crinum asiaticum (L.), Cyclosorus heterocarpus (Blume) Ching, Desmodium umbellatum (L.) DC, Dendrolobium umbellatum (L.) Benth, Inocarpus fagifer (Parkinson) Fosberg, Nephrolepis falcata (Cav.) C. Christens, Pongamia pinnata (L.) Pierre, Rhizophora mucronata Lam, Scaevola taccada (Gaertn.) Roxb, Sonneratia ovata Backer, Thespesia populnea (L.) Sol. ex Correa, And Xylocarpus moluccensis M.Roem. Rhizophora mucronata Lam, is the type that has the highest diversity value (H’) of 0.863 while the lowest diversity value (H’) is the Sonneratia ovata Backer mangrove, with a value of 0.087.
