Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Asian Journal of Aquatic Sciences Jurnal Laot Ilmu Kelautan
Mardhatila, Anisa
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Analisis Tutupan Lamun di Perairan Pulau Weh, Pesisir Pelabuhan Balohan Sabang Mursawal, Asri; Wahyuni, Sri; Mardhatila, Anisa; Samudra, Arung
Jurnal Laot Ilmu Kelautan Vol 7, No 2 (2025): Jurnal Laot Ilmu Kelautan
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jlik.v7i2.13874

Abstract

Penelitian ini bertujuan untuk menganalisis persentase tutupan lamun di perairan Pulau Weh, khususnya di pesisir Pelabuhan Balohan, Sabang. Pengambilan data dilakukan menggunakan metode transek kuadran pada dua titik pengamatan. Transek kuadran ukuran 50x50 cm diletakkan dengan jarak 5 m pada garis pengamatan sepanjang 30 m. Hasil penelitian menunjukkan bahwa hanya satu jenis lamun ditemukan di lokasi penelitian, yaitu Halodule uninervis, yang dikenal memiliki kemampuan adaptasi tinggi terhadap lingkungan berpasir dan arus tenang. Nilai kerapatan lamun berkisar antara 145–484 individu per kuadran, dengan persentase tutupan masing-masing 31% pada titik 1 dan 69% pada titik 2. Faktor lingkungan seperti kecerahan dan pH menjadi penentu utama perbedaan tutupan, di mana kecerahan lebih tinggi (1,6 m) dan pH basa (9,3) pada titik 2 mendukung pertumbuhan vegetatif lamun yang optimal. Kondisi tersebut menunjukkan bahwa kualitas perairan, khususnya tingkat kecerahan dan pH, memiliki pengaruh signifikan terhadap produktivitas H. uninervis di habitat pesisir tropis. Hasil penelitian ini dapat menjadi dasar dalam upaya pengelolaan dan konservasi ekosistem lamun di wilayah Sabang secara berkelanjutan.
POPULATION DYNAMICS OF KAWAKAWA (Euthynnus affinis) LANDED AT PPI UJONG BAROH, WEST ACEH Mursawal, Asri; Wahyuni, Sri; Mardhatila, Anisa; Oktavia, Oktavia; Diana, Fitri; Marbun, Serliana Hotmariska; Kurniawan, Ronal
Asian Journal of Aquatic Sciences Vol. 8 No. 3 (2025): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.3.345-355

Abstract

This study analyzed the population dynamics of kawakawa tuna (Euthynnus affinis) landed at PPI Ujong Baroh, West Aceh, from May to August 2025, using length-frequency data and the Von Bertalanffy growth model. A total of 815 individuals were measured to estimate growth, mortality, and exploitation parameters. The fork length ranged from 22–69 cm, dominated by medium-sized fish (30–37 cm FL), with the length at first capture (Lc = 33 cm FL) notably smaller than the length at first maturity (Lm ≈ 42–43 cm FL). Growth analysis indicated rapid juvenile growth, characterized by an asymptotic length (L∞) of 90 cm and a relatively high growth coefficient (K), while recruitment occurred periodically throughout the year. Mortality estimates showed total mortality (Z) of 4.77/year, natural mortality (M) of 1.45/year, and fishing mortality (F) of 3.32/year, resulting in an exploitation rate (E) of 0.70, which exceeds the optimal reference point (E = 0.5). These findings indicate that the kawakawa tuna stock in West Aceh is currently overexploited. This study provides the first updated, location-specific population parameter estimates for E. affinis in West Aceh waters, offering a critical scientific baseline for regionally adaptive fisheries management. Science-based management measures are therefore recommended, including implementing a minimum landing size of ≥43 cm FL, seasonal closures during spawning periods, effort control, and strengthened fisher participation to ensure long-term stock sustainability
Co-Authors Diana, Fitri Marbun, Serliana Hotmariska Mursawal, Asri Oktavia Oktavia Ronal Kurniawan Samudra, Arung Sri Wahyuni Sri Wahyuni