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All Journal BULETIN OSEANOGRAFI MARINA Jurnal Dimensi Omni-Akuatika JURNAL EDUCATION AND DEVELOPMENT Minda Baharu JPBIO (Jurnal Pendidikan Biologi) Jurnal Pembelajaran dan Biologi Nukleus BioEksakta : Jurnal Ilmiah Biologi Unsoed KIDDO: Jurnal pendidikan Islam Anak Usia Dini SIMBIOSA BiosciED: Journal of Biological Science and Education Jurnal Pendidikan dan Pembelajaran Indonesia (JPPI) JCP (Jurnal Cahaya Pendidikan) Fakultas Keguruan dan Ilmu Pendidikan International Journal of Management, Innovation, and Education Pedagogia : Jurnal Ilmiah Pendidikan
Yarsi Efendi
Universitas Riau Kepulauan
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Social Sciences Veterinary Other

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Population Structure and Anthropogenic Pressure of Sea Urchin Utilisation (Diadema setosum) on Shallow Coral Reefs of Dedap Island, Batam Pitrin Octca Manihuruk; Yarsi Efendi; Fauziah Syamsi
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7920

Abstract

Background: Diadema setosum is a key species in maintaining coral reef stability through its role in controlling algal growth. However, exploitation for consumption and trade of its gonads by coastal communities has generated anthropogenic pressures that threaten population sustainability. This study aims to assess the population structure and utilisation pressure on   D. setosum in the shallow coral ecosystem of Dedap Island, Batam City. Methodology: Observations were carried out at five stations using a 50-metre belt transect method with 5×5 m quadrat plots. Data were analysed through descriptive statistics to determine density and distribution, while correlation and regression analyses were applied to examine the influence of environmental parameters (temperature, dissolved oxygen, salinity, and pH). Structured quantitative interviews with local fishermen were conducted to obtain information on harvesting practices. Results: The population density ranged from 0.180 to 0.292 ind/m², with a clustered distribution pattern observed at stations farther from human activity. Regression results indicated that temperature significantly increased density, while dissolved oxygen and pH had significant negative effects. Fishermen reported daily harvesting during low tide with yields of 2–3 kg of gonads per person. These findings demonstrate exploitation pressure on D. setosum, underscoring the need for ecosystem-based management. Contribution: The novelty of this study lies in integrating ecological surveys with socio-economic data, offering comprehensive insights for locally adapted conservation strategies.
Morphometric and Length–Weight Relationships of Three Penaeid Shrimp Species in the Waters of Jaloh Island, Batam City Masni Masni; Fauziah Syamsi; Yarsi Efendi
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i3.7662

Abstract

Background: Understanding the relationship between body length and weight in commercially essential shrimp species is crucial for assessing growth patterns and estimating biomass. This study aims to evaluate the relationship between body length and weight in three species of shrimp, namely the whiteleg shrimp (Penaeus merguensis), whiteleg shrimp (Litopenaeus vannamei), and tiger shrimp (Penaeus monodon), as a basis for fisheries management in the waters of Jaloh Island, Batam City. Methodology: The samples were collected randomly from the results, catching fishermen at three stations during a day of data collection. Morphometric measurements were conducted on 180 individual, namely whiteleg shrimp (P. merguensis), White shrimp (L. vannamei), and Tiger shrimp (P. monodon). The length-weight relationship has been analyzed for a long time using simple regression using Excel software. The connection between character morphometrics and total length was analyzed with ANCOVA using SPSS 27 software. Findings: The results showed the determinant coefficient of three species shrimp in this study indicates a very close relationship between the growth of length and weight of shrimp. In the P. monodon species, it is known that approximately 78 % of the weight gain is attributed to the increase in shrimp length, while 22 % is attributed to other factors. Characters that influence the total length of the three species are generally overall, where P. merguensis is more influenced by the tail and weight, L. vannamei by the front, back, and body mass, while P. monodon involves almost all parts of the body. Contribution: This approach helps estimate biomass, identify morphological variations between species, and provides a scientific basis in supporting efforts to manage shrimp resources sustainably
Population structure and local utilization of spider conch (lambis lambis) in abang island waters, batam Rentik Nurisma Airani; Yarsi Efendi; Fauziah Syamsi
JPBIO (Jurnal Pendidikan Biologi) Vol 11, No 1 (2026): April 2026
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpbio.v11i1.6013

Abstract

This study explores the population structure, spatial distribution, and community utilization of Lambis lambis on Abang Island as a foundation for species conservation and community-based management. The research aims to examine the population structure and distribution patterns of Lambis lambis as well as its utilization by fishing communities on Abang Island, Batam. Data were collected using a 50-meter quadrat transect method with observation plots measuring 5 m × 5 m, along with measurements of environmental parameters (dissolved oxygen, temperature, and salinity). The results indicate low population density (0.012–0.028 ind/m²) and a clustered distribution pattern (Morisita Index > 1). A positive correlation was found between dissolved oxygen and population density, while high temperature showed a negative correlation. These findings suggest that environmental pressure and exploitation influence the spatial distribution of Lambis lambis. This study provides a scientific basis for community-based management and species conservation.
Co-Authors Adil Waraney Agustina, Sinni Best Alfajri, Desman Ardiansyah, Rio Campina, Teny Dahrul Aman Harahap Desi K Wulansari Desi K Wulansari Desi Kardini Wulansari Devi Bella Pratiwi Dian Prasasti Dinda Nurul Inayati Dinda Nurul Inayati Dinda Nurul Inayati Erwin Ashari, Erwin Eva Carlina Pasaribu Fauziah Syamsi Fauziah Syamsi Fauziah Syamsi Fauziah Syamsi Fauziah Syamsi Fauziah Syamsi, Fauziah Fenny Agustina Fenny Agustina Fitrah Amelia Hapsari, Ratna F Inayati, Dinda Nurul Ismarti Ismarti Iyan Irdiyansyah Juliana Saffitri Kiptiyah Kiptiyah Lani Puspita Lani Puspita, Lani Lasdem Saragih Lisa Salminda Liska Chairani Harahap Mar Ayunis Martha Friendly Masni Masni Meilanda, Yuria Liza Muhamad Hasyir Muslih Anwar Notowinarto Notowinarto Nurdiana, Juwita Nurhaty Purnama Sari Nurhaty Purnama Sari, Nurhaty Purnama Pitrin Octca Manihuruk Rahman, Yulia Rahmi Rahmi Rahmi Rahmi Rais Hidayat Rais Hidayat Ramses Firdaus, Ramses Ramses Ramses Ratna F Hapsari Ratna F Hapsari Ratna Fitri Hapsari Rentik Nurisma Airani Santiria Simatupang Sefira, Anisa Sertika Sianipar Siti Fatmawati Styvany Styvany Wening Kadarsih Wiranto, Ijal Wulansari, Desi K Wulansari, Desi Kardini Yulia Savitri Zikkra Evita