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MODEL PENULISAN BUKU AJAR BIOLOGI SMA BERWAWASAN EKOLOGI DAN LOKAL UNTUK MENINGKATKAN KEPEDULIAN SISWA TERHADAP LINGKUNGAN Achyani, Achyani; Rustaman, Nuryani Y.; Redjeki, Sri; Choesin, Devi Nandita
Bioedukasi Jurnal Pendidikan Biologi Vol 1, No 1 (2010): Mei 2010
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

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A study using Research and Development design was conducted to produce a model of Biology hand book writing which is ecology and local oriented as an effort to increase studentsâ care toward environment. The background of this research is the reality which isÂ still going on untill now that the awareness and care of the school graduatee toward the environement safety is still low. Besides, hard science instructional at school could not affect or intervene the graduateeâs characteristics, for instance in keeping the environment awareness. Meanwhile, there are many concepts of environment which had been taught through hard science especially biology, so in the researcherâs point of view, biology subject has strategic role to prevent or mitigate the environment disaster caused by human activities. The model was validated at beachÂ ecosystem. The analysis of the research result includes three aspects, namely: 1) text comprehension, 2) environment care attitude, and 3) handbook readibility. Based on the result of beach ecosystem data analysis, it was found that (1) there was a significant difference between experimental class and control class in the beach ecosystem which is shown by tcalculation > ttable (7.429 > 2.00); (2) there was strong correlation between studentsâ comprehension and attitude which is shown by coeficient correlation (r) 0.634. While the text readability test (Cloze test) shownÂ the readability of beach ecosystem text is 57,57% (moderate). Therefore, it can be concluded that all of the texts in the developed book are fit and proper for SMA students of grade X.Â Kata kunci: Â Penulisan buku ajar, orientasi ekologi dan lokal, kepedulian terhadap Â lingkungan.

Deskripsi Vegetasi dan Analisis Daerah Perbatasan Pada Rawa Air Tawar di Ranca Upas, Kabupaten Bandung, Jawa Barat Ambarwati, Dhenok Sekar; Choesin, Devi Nandita
Jurnal Matematika dan Sains Vol 19 No 3 (2014)
Publisher : Institut Teknologi Bandung

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Ekosistem rawa di Ranca Upas, Jawa Barat, memiliki nilai ekonomi dan nilai ekologis yang tinggi sehingga perlu dilakukan upaya konservasi untuk keberlanjutannya. Namun demikian, data dasar dan informasi tentang kondisi rawa di Ranca Upas secara umum masih kurang, sehingga penelitian ini bertujuan untuk: (1) mendeskripsikan komunitas tumbuhan di daerah rawa Ranca Upas; (2) mengkarakterisasi daerah perbatasan antara rawa dan ekosistem hutan yang membatasinya, dan (3) mengetahui hubungan antara faktor fisik lingkungan dengan vegetasi dan kondisi perbatasan. Deskripsi vegetasi didasarkan pada data dari dua transek sabuk (belt transect), dengan panjang masing-masing 378 meter untuk transek I dan 337 meter untuk transek II yang terbentang mulai dari Gunung Cadas Panjang sampai dengan Gunung Tikukur. Kondisi hidrologi diukur pada setiap plot 1x1 m2 dan sampel tanah diambil secara acak. Ordinasi tidak langsung dengan Principal Component Analysis (PCA) dilakukan untuk melihat karakter perbatasan berdasarkan pengelompokan plot. Analisis Canonical Correspondence Analysis (CCA) dilakukan untuk melihat hubungan antara data vegetasi dengan faktor lingkungan. Dari hasil analisis vegetasi tercatat adanya 23 spesies tumbuhan dari 18 famili. Berdasarkan perubahan komunitas vegetasi, daerah perbatasan rawa dan hutan di Gunung Cadas Panjang memiliki karakteristik perbatasan yang jelas atau tajam, sedangkan perbatasan di Gunung Tikukur memiliki karakteristik bertahap atau gradual. Analisis CCA mengindikasikan bahwa hidrologi merupakan faktor yang paling berpengaruh terhadap persebaran komunitas tumbuhan di rawa air tawar Ranca Upas. Kata Kunci: Perbatasan, Ranca Upas, Rawa air tawar, Vegetasi. Vegetation Description and Boundary Analysis in Ranca Upas Freshwater Marsh, Bandung District, West Java Abstract The area of Ranca Upas, West Java, contains a unique freshwater marsh ecosystem with high economic and ecological values, thus requiring management and conservation efforts for its sustainability. However, baseline data and information on the marsh are generally lacking. Therefore, this study was conducted to (1) describe the current vegetation of Ranca Upas marsh; (2) characterize the boundary between the marsh and the bordering forest area; and (3) understand the relationship between environmental factors and vegetation. The belt transect method was used to collect data on vegetation. Vegetation description was based on data from two belt transects, measuring 378 and 337 meters respectively, extending from Mount Cadas Panjang to Mount Tikukur. Water presence and/or depth was measured in each 1x1 m2 plot while soil samples were taken at random. Indirect ordination by Principal Component Analysis (PCA) was conducted to detect boundary character based on plot grouping. Canonical Correspondence Analysis (CCA) was used to analyze the relationship between vegetation and environmental factors. A total of 23 species of plants from 18 families was recorded. Based on change in plant communities, the boundary between marsh and forest at Mount Cadas Panjang had a clear or sharp characteristic while at Mount Tikukur the boundary was gradual. CCA analysis suggests that hydrology is the most important factor affecting distribution of plant communities at Ranca Upas. Keywords: Boundary, Freshwater marsh, Ranca Upas, Vegetation.

MANGROVE ECOSYSTEM MANAGEMENT STRATEGY FOR TUNDA ISLAND, BANTEN PROVINCE Alfiani, Titin; Choesin, Devi Nandita; Sofiatin, Sofiatin
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Mangrove ecosystems protect small islands and provide economic and social benefits to the community. Among the small islands in Indonesia with mangroves at its shorelines is Tunda Island, located in Serang District, Banten Province. However, various threats, such as shipping industrial waste and climate change, have caused the mangroves of Tunda Island to decline. This study aims to describe the condition of mangroves on Tunda Island, assess the local community's perception level of mangrove management, and formulate a strategy for managing the mangrove ecosystem on this island. This research was conducted on Tunda Island, Banten Province in January 2022. Mangrove ecological data were collected at four stations using purposive sampling, and questionnaires were distributed to collect community social data from 95 respondents. Mangrove health was analyzed using the Mangrove Health Index (MHI), while community social data were analyzed using the Strengths, Weaknesses, Opportunities, and Threats (SWOT) analysis and the Quantitative Strategic Planning Matrix (QSPM). Results showed that the mangroves fall into the category of poor, with an MHI of 14.75% on the north side; poor with 17.16% on the west side; moderate with 51.07% on the south side; and moderate with 65.89% on the east side of the island. The level of community perception of Tunda Island mangrove management is 60.66%, which implies a positive perception, and that the people of Tunda Island have an adequate understanding of the role of the mangrove ecosystem. The priority management strategy is to empower the community in the accelerated program to rehabilitate sustainable mangrove ecosystems by providing equal opportunities and rights for the community.

Assessment of Ecosystem Health and Carbon Stocks in the Seagrass Meadows of Mengiat Beach, Bali, Indonesia Choesin, Devi Nandita; Gouw, Amadeus Devin; Pitriana, Pipit
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.29.4.481-494

Seagrass meadows provide many important ecosystem services. They are now recognized as blue carbon ecosystems that are crucial in the mitigation of global climate change. This study was conducted at Mengiat Beach in Bali, Indonesia, where there are extensive seagrass meadows along the shorelines, but also considerable anthropogenic activity that pose threats to the ecosystem. The objectives of this study were to: (1) describe the seagrass community at Mengiat Beach; (2) assess the health status of the seagrass ecosystem; and (3) estimate carbon stocks stored within the ecosystem. Vegetation analysis was conducted to describe the seagrass community in terms of density, cover, biomass and species importance. Spatial Sentinel-2 satellite data with unsupervised classification was used to determine the extent of seagrass meadows. Carbon stocks in sediment and biomass were estimated using the loss on ignition method. The seagrass community at Mengiat Beach consists of at least five different species, dominated by Cymodocea rotundata. The meadows are characterized by high density (588 ind.m-2) and good cover (60.7%). They are considered healthy, with good ecological quality, as indicated by a SEQI (Seagrass Ecological Quality Index) of 0.69. The seagrass ecosystem stores a significant amount of carbon, with 99.23% of it stored in sediment. Total carbon stock in sediment and seagrass biomass is estimated at 133.39 MgC.ha-1. When extrapolated to the total seagrass area of 43.21 ha, the meadows at Mengiat Beach store a total carbon stock of 5.76 GgC, highlighting their potential as high-carbon reservoirs and importance in climate change mitigation efforts.

MANGROVE ECOSYSTEM MANAGEMENT STRATEGY FOR TUNDA ISLAND, BANTEN PROVINCE Alfiani, Titin; Choesin, Devi Nandita; Sofiatin, Sofiatin
Asian Journal of Aquatic Sciences Vol. 5 No. 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Mangrove ecosystems protect small islands and provide economic and social benefits to the community. Among the small islands in Indonesia with mangroves at its shorelines is Tunda Island, located in Serang District, Banten Province. However, various threats, such as shipping industrial waste and climate change, have caused the mangroves of Tunda Island to decline. This study aims to describe the condition of mangroves on Tunda Island, assess the local community's perception level of mangrove management, and formulate a strategy for managing the mangrove ecosystem on this island. This research was conducted on Tunda Island, Banten Province in January 2022. Mangrove ecological data were collected at four stations using purposive sampling, and questionnaires were distributed to collect community social data from 95 respondents. Mangrove health was analyzed using the Mangrove Health Index (MHI), while community social data were analyzed using the Strengths, Weaknesses, Opportunities, and Threats (SWOT) analysis and the Quantitative Strategic Planning Matrix (QSPM). Results showed that the mangroves fall into the category of poor, with an MHI of 14.75% on the north side; poor with 17.16% on the west side; moderate with 51.07% on the south side; and moderate with 65.89% on the east side of the island. The level of community perception of Tunda Island mangrove management is 60.66%, which implies a positive perception, and that the people of Tunda Island have an adequate understanding of the role of the mangrove ecosystem. The priority management strategy is to empower the community in the accelerated program to rehabilitate sustainable mangrove ecosystems by providing equal opportunities and rights for the community.

RESTORASI MANGROVE BERBASIS KOMUNITAS PESISIR: PENYEMAIAN, MONITORING, DAN TANTANGAN EKOLOGI Rieuwpassa, Frets; Wibowo, Indra; Choesin, Devi Nandita; Gansalangi, Ferdinand; Tomasoa, Aprelia Martina; Sambeka, Yana; Nursatya, Safira Meidina; Wibowo, Arie; Balansa, Walter; Barlian, Anggraini
Jurnal Ilmiah Tatengkorang Vol 8 No 2 (2024): Jurnal Ilmiah Tatengkorang
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat, Politeknik Negeri Nusa Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54484/tkrg.v8i2.665

As a collaborative effort between the School of Life Sciences (SITH) Institute Technology Bandung (ITB), Polnustar, and the people of Salurang, this community service aimed to restore the coastal area of Salurang village, Sangihe Islands, North Sulawesi, through various initiatives, including mangrove rehabilitation and sponge cultivation. This report specifically focuses on the propagation of 1,500 Rhizophora apiculata propagules to combat severe sedimentation from local mining and reclamation, which degraded the coastal area and reduced fish populations. Initial monitoring showed a 95.20% success rate for R. apiculata, later dropping to 78.87% due to plastic waste, animal disturbances, and tidal conditions. While the primary focus was on R. apiculata, the article also touched on the potential use of Calophyllum inophyllum, which successfully grew on different media for future restoration efforts. The monitoring process involved Polnustar and local residents tracking growth and survival every 30 days, with SITH ITB conducting more thorough checks 60 days after propagation. These activities, including guest lectures and hands-on training, significantly enhanced local conservation knowledge and environmental stewardship. The findings highlight the potential of mangrove restoration in Salurang village, demonstrating that coastal restoration is achievable with proper management, adaptive strategies, and active community engagement. Sebagai bagian dari kolaborasi antara Sekolah Ilmu dan Teknologi Hayati (SITH) Institut Teknologi Bandung (ITB), Polnustar, dan masyarakat Salurang, kegiatan pengabdian masyarakat ini bertujuan untuk memulihkan wilayah pesisir desa Salurang, Kepulauan Sangihe, Sulawesi Utara, melalui berbagai inisiatif, termasuk rehabilitasi mangrove dan budidaya spons. Artikel ini secara khusus berfokus pada propagasi 1.500 propagul Rhizophora apiculata untuk mengatasi sedimentasi berat akibat penambangan lokal dan reklamasi, yang telah merusak wilayah pesisir dan mengurangi populasi ikan. Pemantauan awal menunjukkan tingkat keberhasilan R. apiculata sebesar 95,20%, yang kemudian menurun menjadi 78,87% akibat sampah plastik, gangguan hewan, dan kondisi pasang surut. Meskipun fokus utama adalah pada R. apiculata, artikel ini juga menyinggung potensi penggunaan Calophyllum inophyllum yang berhasil tumbuh pada media yang berbeda untuk upaya restorasi di masa depan. Proses pemantauan melibatkan Polnustar dan warga setempat dalam memantau pertumbuhan dan kelangsungan hidup propagul setiap 30 hari, dengan SITH ITB melakukan pemeriksaan lebih mendalam 60 hari setelah propagasi. Kegiatan ini, termasuk kuliah tamu dan pelatihan langsung, secara signifikan meningkatkan pengetahuan konservasi lokal dan pengelolaan lingkungan. Hasil pengabdian masyarakat ini mengindikasikan potensi restorasi mangrove di desa Salurang, menunjukkan bahwa pemulihan pesisir berpotensi dicapai dengan manajemen yang tepat, strategi adaptif, dan keterlibatan aktif masyarakat

An Application of Water Pollution Index (PI) to Describe the Water Quality of Ciwalen River, Garut Regency Kristin, Marcellina; Taufikurahman, Taufik; Choesin, Devi Nandita
G-Tech: Jurnal Teknologi Terapan Vol 9 No 4 (2025): G-Tech, Vol. 9 No. 4 October 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i4.7783

Garut Regency is one of the famous leather producing areas in Indonesia. The existence of leather tanning industry gives some positive impact in economic but also some negative impact to the environment. This study aims to analyze the condition of Ciwalen River using the Pollution Index (PI) method to monitor the river water quality. Water sampling was carried out using the grab sampling technique during dry and rainy season, on June and December 2024. The parameters measured include BOD, COD, TSS, pH, oil and fat, ammonia, total chrome, and sulfide concentration. These parameters were used to calculate Water Pollution Index (PI). Based on the PI, the condition of the Ciwalen river that passes through the Sukaregang leather tanning industry area is polluted. In dry season, the condition of the water cannot be used for drinking water and is moderately polluted for class II-IV needs such as livestock, fisheries, and plant watering. While in rainy season there is a decrease in polluted conditions to moderate polluted for classes I-III and light polluted for class IV due to higher debit and self purification process.

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