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All Journal Aquacoastmarine AQUACOASTMARINE: Journal of Aquatic & Fisheries Sciences Berkala Ilmiah Biologi
Abdul Razaq Chasani
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Veterinary Other

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Macroalgal Diversity in Intertidal Zone of Mbuluk Beach, Gunungkidul, Indonesia: Keanekaragaman Makroalga di Zona Intertidal Pantai Mbuluk, Gunungkidul, Indonesia Renada Oktavia; Arli Siti Nurlaila; Renisha Windy Puspita Sari; Alifia Nur Hidayah; Muhammad Ariq Alfito; Indira Amani Kurniawan; Valeria Nawang Riris Lintang Kaloka; Abdul Razaq Chasani
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 4 No. 1 (2025): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v4i1.19134

Abstract

Mbuluk Beach is one of the new tourist beaches in Kemadang Village, Tanjungsari District, Gunungkidul Regency, D. I. Yogyakarta. Mbuluk Beach is a small beach which is characterised by a rocky substrate along the coastal area and overgrown with macroalgae. This research aims to study the diversity of macroalgae in the intertidal zone of Mbuluk Beach and determine the physicochemical parameters that influence their distribution and diversity. This research was conducted on October 21st, 2023. The method used was systematic sampling for collecting samples and directly measuring physicochemical parameters. The calculated index of species diversity used is Shannon-Wiener’s formula. The result showed that seventeen species of macroalgae were identified, consisting of six species from Chlorophyta, two species from Phaeophyta, and nine species from Rhodophyta. The macroalgal diversity index in the intertidal zone of Mbuluk Beach is 1.9, which means that the level of species diversity is moderate. The type of substrate which is mostly rocky substrate and the physicochemical parameters obtained, including air temperature (22°C), water temperature (21.3°C), pH (7.4), salinity (35.1 ppt), light intensity (5219.5 Lux), characterized the environmental conditions in which the identified macroalgae species were present in the intertidal zone of Mbuluk beach
Macroalgal Diversity in Intertidal Zone of Mbuluk Beach, Gunungkidul, Indonesia: Keanekaragaman Makroalga di Zona Intertidal Pantai Mbuluk, Gunungkidul, Indonesia Renada Oktavia; Arli Siti Nurlaila; Renisha Windy Puspita Sari; Alifia Nur Hidayah; Muhammad Ariq Alfito; Indira Amani Kurniawan; Valeria Nawang Riris Lintang Kaloka; Abdul Razaq Chasani
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 4 No. 1 (2025): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v4i1.19134

Abstract

Mbuluk Beach is one of the new tourist beaches in Kemadang Village, Tanjungsari District, Gunungkidul Regency, D. I. Yogyakarta. Mbuluk Beach is a small beach which is characterised by a rocky substrate along the coastal area and overgrown with macroalgae. This research aims to study the diversity of macroalgae in the intertidal zone of Mbuluk Beach and determine the physicochemical parameters that influence their distribution and diversity. This research was conducted on October 21st, 2023. The method used was systematic sampling for collecting samples and directly measuring physicochemical parameters. The calculated index of species diversity used is Shannon-Wiener’s formula. The result showed that seventeen species of macroalgae were identified, consisting of six species from Chlorophyta, two species from Phaeophyta, and nine species from Rhodophyta. The macroalgal diversity index in the intertidal zone of Mbuluk Beach is 1.9, which means that the level of species diversity is moderate. The type of substrate which is mostly rocky substrate and the physicochemical parameters obtained, including air temperature (22°C), water temperature (21.3°C), pH (7.4), salinity (35.1 ppt), light intensity (5219.5 Lux), characterized the environmental conditions in which the identified macroalgae species were present in the intertidal zone of Mbuluk beach
Community Structure and Genetic Diversity of Dominant Riparian Vegetation Species in the Kedung Ingas River Following Sand Mining Activities Budi Setiadi Daryono; Abdul Razaq Chasani; Nidianti, Esty
Berkala Ilmiah Biologi Vol 17 No 1 (2026)
Publisher : Fakultas Biologi Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/bib.v17i1.28661

Abstract

Riparian ecosystems play a crucial role in maintaining river ecological functions but are highly vulnerable to anthropogenic disturbances, including sand mining. Sand mining activities in the Kedung Ingas River, Cilegon City, have altered habitat conditions and riparian vegetation structure. This study aimed to evaluate the structure, composition, and genetic diversity of dominant riparian vegetation species following sand mining activities using an integrated ecological and molecular approach based on Inter Simple Sequence Repeat (ISSR) markers. The study was conducted across three riparian zones representing a disturbance gradient: upstream (non-mining), middle (post-sand mining), and downstream (deposition zone). In each zone (±100 m), two observation sites were established (six sites in total), and three plots were set up at each site: 5 m x 5 m (trees), 2 m x 2 m (saplings), and 1 m x 1 m (seedlings). Vegetation structure and composition were analyzed using the Important Value Index (IVI), while community diversity was assessed using the Shannon–Wiener, Simpson, and evenness indices. Seedling community patterns were further examined using Non-metric Multidimensional Scaling (NMDS). Genetic analysis was performed on three dominant species, Swietenia macrophylla, Microcos paniculata, and Musa sp., using five ISSR primers. The results showed that riparian vegetation comprised 28 species from 19 families, with the highest diversity observed in the seedling stratum. The post-mining zone was dominated by pioneer species, whereas the downstream zone indicated secondary succession. ISSR analysis generated a total of 29 loci, with PIC values ranging from 0.26 to 0.44 and polymorphic loci ranging from 60% to 100%, indicating moderate to high levels of genetic diversity. These findings suggest that dominant riparian vegetation still retains sufficient genetic diversity to support natural regeneration and ecosystem restoration following sand mining.
Co-Authors Alifia Nur Hidayah Arli Siti Nurlaila BUDI SETIADI DARYONO Indira Amani Kurniawan Muhammad Ariq Alfito Nidianti, Esty Renada Oktavia Renisha Windy Puspita Sari Valeria Nawang Riris Lintang Kaloka