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Shell size distributions, land use, and water quality relationships of a freshwater apple snail Pomacea canaliculata (Lamarck, 1822) in Maninjau Lake, West Sumatra, Indonesia NOVERITA DIAN TAKARINA; TRI RETNANINGSIH SOEPROBOWATI; PUTI SRI KOMALA; LUKI SUBEHI; MARTHA WOJEWÓDKA-PRZYBYŁ; DJABANG NURDIN
Biodiversitas Journal of Biological Diversity Vol. 24 No. 10 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d241029

Abstract

Abstract. Takarina ND, Soeprobowati TR, Komala PS, Subehi L, Wojewódka-Przyby? M, Nurdin D. 2023. Shell size distributions, land use, and water quality relationships of a freshwater apple snail Pomacea canaliculata (Lamarck, 1822) in Maninjau Lake, West Sumatra, Indonesia. Biodiversitas 24: 5478-5484. The freshwater apple snail, Pomacea canaliculata (Lamarck, 1822), is a common mollusk in lake ecosystems, including Maninjau Lake, West Sumatra. Despite its presence in Maninjau Lake, the information about its shell size, land use, and water quality variable relationships is very limited. This paper aims to study how the land use surrounding the lake and water quality variables can affect the shell size distributions of P. canaliculata. The samples were collected from several locations representing the varieties of land uses, including settlements, paddy fields, forest covers, and river mouths, along with water quality variables. Statistical analysis was done using ANOVA and validated by Tukey's post hoc test to analyze differences among locations. Pearson’s correlation test was used to analyze the relationship between shell size and water quality variables. The results show that the differences in land use and water quality variables affected the variations of shell length (P < 0.05, F = 4.925) and width (P< 0.05, F = 12.369) of P. canaliculata. The average shell length was 2.709 cm and 2.022 cm for the width. The large shell size was observed in settlement land uses (P< 0.05), and the small shell was observed in forest and paddy field land uses (P< 0.05). The water near settlement land uses was characterized by high temperatures, while colder water was observed in forest and paddy field land uses. Pearson’s test confirms that increases in shell length and width were correlated with increases in temperature and dissolved oxygen.
Phytoplankton community response to seasonal eutrophication in Maninjau Lake, West Sumatra, Indonesia PUTI SRI KOMALA; TRI RETNANINGSIH SOEPROBOWATI; NOVERITA DIAN TAKARINA; LUKI SUBEHI; MARTA WOJEWODKA‑PRZYBYL; BUDHI PRIMASARI; TIVANY EDWIN; LIA ARLINA; REGINA MARDATILLAH
Biodiversitas Journal of Biological Diversity Vol. 27 No. 2 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270232

Abstract

Abstract. Komala PS, Soeprobowati TR, Takarina ND, Subehi L, Wojewodka‑Przybyl M, Primasari B, Edwin T, Arlina L, Mardatillah R. 2026. Phytoplankton community response to seasonal eutrophication in Maninjau Lake, West Sumatra, Indonesia. Biodiversitas 27 (2): d270232. https://doi.org/10.13057/biodiv/d270232. The aim of this study is to analyze the seasonal trophic status of Maninjau Lake using the Comprehensive Trophic Status Index (CTSI) and to examine its spatial and temporal relationship with the phytoplankton community structure. The water and phytoplankton samples were collected from 10 sampling points in accordance with SNI 6989-57-2008 and the ecological protocol. Results show that CTSI values ranged from 62.59 to 73.28, indicating eutrophic to hypereutrophic conditions. The trophic sub-indices showed TSI-TP values of 53.24-82.20, TSI-TN values of 50.97-61.49, and TSI-Chl-a values of 52.98-62.07. Based on spatial analysis, the trophic status is relatively homogeneous across all sampling locations, indicating widespread nutrient loading in the lake. On the other hand, higher CTSI values during the rainy season and temporal variation of CTSI are significant. The increase in CTSI was associated with a change in phytoplankton dominance from Bacillariophyceae under eutrophic conditions to Cyanophyceae under hypereutrophic conditions, reflecting tolerance to increased nutrient concentrations. The hypereutrophic status of Maninjau Lake favored opportunistic taxa, as indicated by an increase in the dominance index and decreases in diversity and evenness. Rainfall contributes to shaping phytoplankton community dynamics, affecting the trophic status of the lake. This study highlights that integrating CTSI, phytoplankton ecological indices, and rainfall variability provides a useful framework for assessing air quality degradation and ecosystem stability in tropical lakes.
Seasonal impacts of microplastic contamination on benthic species using CMPI and PLI indices at Karangsong Estuary, West Java, Indonesia NOVERITA DIAN TAKARINA; RAHMADYFA MAULIDA AZZAHRAH; LUVIAN WASIS BUDIANTO; NATHAN JOSAFAT SOELIAS; MUHAMMAD ZULFIKAR ANWAR; YANDRA RIZKY SAMUDRA; ATHILA ZAHRA ARIESTA AKHMAD
Biodiversitas Journal of Biological Diversity Vol. 27 No. 1 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270125

Abstract

Abstract. Takarina ND, Azzahrah RM, Budianto LW, Soelias NJ, Anwar MZ, Samudra YR, Akhmad AAA. 2026. Seasonal impacts of microplastic contamination on benthic species using CMPI and PLI indices at Karangsong Estuary, West Java, Indonesia. Biodiversitas 27 (1): d270125. https://doi.org/10.13057/biodiv/d270125. Benthic species play a crucial role in estuarine environments. While there is ongoing research on microplastics, information regarding the seasonal variation of microplastics in benthic species remains limited. This study explores the impact of seasonal variation (wet and dry seasons) on microplastic contamination in two representative benthic species at the Karangsong Estuary in West Java, Indonesia. The samples were collected from nine sampling sites in the Karangsong Estuary, with a total of two benthic species and 27 individuals sampled. After a microplastic extraction procedure, Raman Spectroscopy was utilized to identify the microplastic polymers. During the wet season, the predominant types of microplastics found in both Telescopium telescopium and Metaplax longipes are fragments, pellets, and fibers, in that order. The results showed that total microplastic abundance was significantly higher during the wet season than the dry season (χ² = 9.108, p = 0.002), with M. longipes consistently accumulating more microplastics than T. telescopium. During the wet season, microplastic fragments dominated in both species, reaching 0.37 particles g⁻¹ wet mass in T. telescopium (95% CI: 0.06-0.74) and 107.18 particles g⁻¹ wet mass in M. longipes (95% CI: 0-256.00). In contrast, fibers were more prevalent in the dry season, particularly in M. longipes (18.78 particles g⁻¹ wet mass; 95% CI: 6.60-32.80). According to the Comprehensive Microplastics Pollution Index (CMPI), fragments were extremely dominant in M. longipes during the wet season (CMPI = 0.984), while fibers were dominant in T. telescopium during the dry season (CMPI = 0.638). Pollution Load Index (PLI) values for all shapes remained within the low contamination category. Polymer analysis indicated that polyethylene terephthalate (PET) and polyethersulfone (PES) were the dominant polymers in T. telescopium, whereas polypropylene (PP) was most frequently associated with M. longipes. Differences likely influence seasonal variation in microplastic contamination in rainfall, tidal dynamics, surface runoff, and fishing activity between seasons. Although this study is limited by sample size, estuarine coverage, and the use of Raman spectroscopy for polymer identification, the findings highlight clear seasonal patterns in microplastic contamination. These results underscore the importance of season-specific management strategies and support the potential use of M. longipes as a sensitive bioindicator for microplastic pollution in tropical estuaries.
Coal mining reclamation as an environmental recovery effort: a review Pambudi, Priyaji Agung; Utomo, Suyud Warno; Soelarno, Soemarno Witoro; Takarina, Noverita Dian
Journal of Degraded and Mining Lands Management Vol. 10 No. 4 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.104.4811

Abstract

The exploitation of natural resources remains a common practice in many countries to stimulate economic growth, and coal is the most commonly exploited resource. However, the mining process often causes environmental disturbance. Therefore, this research was conducted to analyze the ideal implementation of coal mine reclamation in Indonesia. In the post-mining area, the land is often arid, with voids that are prone to flood and erosion. The reclamation of this area is carried out by returning topsoil, adding organic material, and planting cover crops and fast-growing species. When the topographical conditions have steep slopes, scrap engineering is often added to hills up to a maximum height of 8 meters, trimming the slope with a maximum remaining slope of 35 degrees and making drainage channels with a width of more than 3 meters, a depth of more than 2 meters, and an edge slope of 2-5 percent. Approximately 70.59% of reclamation programs in Indonesia are aimed at reforesting mining areas into secondary forests because they were previously a forest ecosystem. The types of reclamation that had been carried out but were still uncommon included aquaculture, urban forests, parks playground, sports park, cattle farms, and fauna conservation ecotourism. A new approach to reclamation, such as eco-habitat, is important to obtain optimal social, economic, and ecological benefits. This approach involves optimizing sources of livelihood based on area rezoning according to the level of interference, revegetation of plants involving the community, and revitalization of sources of community livelihood, specifically environmental restoration with plant species as sources of food, nutrition, minerals, income, and non-timber forest products. Therefore, the reclamation program should be carried out through a collaborative partnership between companies, local communities, academics, technical ministries, and the media.
Co-Authors A. A. Md. Ananda Putra Suardana A. Ginong Pratikino Adidharma, Mohammad Afdhal Agung Suwanto Andrio Adiwibowo Annisa Khaira Nasution ATHILA ZAHRA ARIESTA AKHMAD Christon Christon Clara Alverina Santoso Dedi Cahyadi Dewi Susylowati Dietriech Geoffrey Bengen DJABANG NURDIN Emiyarti Emiyarti, Emiyarti Etty Riani Evi Frimawaty Evi Frimawaty Hanies Ambarsari Hanies Ambarsari Hardi Junaedi Harpasis Slamet Sanusi Harpasis Slamet Sanusi Hayati Sari Hasibuan Henry Kasman Hadi Saputra Hikmah Thoha Ika Lina Sinaga Ikhsan Pratama J. Supriatna Jatna Supriatna Johan, Erni KEVIN EWALDO Kevin Ewaldo LIA ARLINA Lily Susanti LUKI SUBEHI LUKI SUBEHI LUTHFIRALDA SJAHFIRDI LUVIAN WASIS BUDIANTO Mahawan Karuniasa Mahawan Kurniasa MARTA WOJEWODKA‑PRZYBYL MARTHA WOJEWÓDKA-PRZYBYŁ Martono, Dwi Nowo Matsue, Naoto MOHAMMAD AFDHAL ADIDHARMA Moira Moeliono, Moira Mufti Petala Patria Muhammad A Rijal MUHAMMAD ZULFIKAR ANWAR Nanin NATHAN JOSAFAT SOELIAS Nestiyanto Hadi Nining Betawati Prihantini Nurul Taufiqu Rochman Pramudyawardhani, Sekar Arum Primasari, Budhi Priyaji Agung Pambudi Puti Sri Komala Qurrota Ayun Rahmadi RAHMADYFA MAULIDA AZZAHRAH Rahmawati, Maria Fatima Niken Kris Raldi Hendro Koestoer Raldi Hendro Koestoer, Raldi Hendro Ratih Dewanti Dimyati Regina Mardatillah Rizki Nugraha Saputra Rudy Parluhutan Tambunan Sitaresmi Soemarno Witoro Soelarno Soemarno Witoro Soelarno Soemarno Witoro Soelarno, Soemarno Witoro Supriatna Supriatna Suyud Warno Utomo Syakila, Alfi Tivany Edwin Tjiong Giok Pin TRI RETNANINGSIH SOEPROBOWATI TRI RETNANINGSIH SOEPROBOWATI Tri Rifqoh Umi Kulsum YANDRA RIZKY SAMUDRA Yasman Yasman