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Journal : Barakuda 45

Analysis of Suitable Habitat for Nesting of Hawksbill Turtles (Eretmochelys imbricata) in Pulau Sangiang Natural Park, Banten Jannah, Neisya Rachmah Raudhatul; Cahyadi, Ferry Dwi; Sasongko, Agung Setyo; Handayani, Dwi
Barakuda 45: Jurnal Ilmu Perikanan dan Kelautan Vol 6 No 2 (2024): Edisi November
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/barakuda45.v6i2.549

Abstract

The Sangiang Island Nature Tourism Park (TWA Pulau Sangiang) is a small island in the Sunda Strait that serves as a nesting habitat for hawksbill turtles (Eretmochelys imbricata). This study aims to analyze the suitability of beaches in TWA Pulau Sangiang as a nesting site. The research employs a qualitative method with direct field observation techniques, interviews, and documentation. The data measured include beach slope, beach width, nest temperature, nest humidity, beach sand pH, sand substrate, beach vegetation, natural predators, and human disturbances. The data were analyzed descriptively using a habitat suitability index for turtle nesting. The measurements show that Villa Bubu Beach has a beach width of 6.4 meters with an average slope of 10º. The sand substrate on this beach is dominated by 97.38% medium sand. Nest temperatures on this beach are 28℃ with dry humidity and an average pH ranging from 6.5 to 7. Meanwhile, Sepanjang Beach has an average beach width of 27.15 meters with a slope ranging from 9.1º. The sand substrate is dominated by 99.47% medium sand. Nest temperatures on this beach average 30℃ with dry humidity and a pH of 6.5–7. The coastal vegetation at Villa Bubu Beach is dominated by Casuarina trees (Casuarina equsetifolia), while the vegetation at Sepanjang Beach is dominated by Sea Lettuce Trees (Scaevola taccada) and Screw Pines (Pandanus tectorius). Natural predators on both beaches include monitor lizards and wild boars. Based on these measurements, Villa Bubu Beach and Sepanjang Beach in TWA Pulau Sangiang are highly suitable as nesting habitats for hawksbill turtles.
Changes In Mangrove Land Area Using Landsat 8 Satellite Images In Blanakan Bay In 2018-2022 Rahayu, Shafa Surya; Cahyadi, Ferry Dwi; Sasongko, Agung Setyo
Barakuda 45: Jurnal Ilmu Perikanan dan Kelautan Vol 7 No 2 (2025): November
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/barakuda45.v7i2.548

Abstract

Mangrove forests in Subang Regency have experienced changes in area coverage due to the expansion of aquaculture ponds and coastal abrasion. This study aims to analyze the changes in mangrove area and density in Blanakan Bay, Subang Regency, during the period 2018–2022 using Landsat 8 satellite imagery. The method employed is a survey approach utilizing multispectral classification. The main assumption of this study is that changes in mangrove coverage can be observed through multitemporal satellite imagery that has undergone geometric and radiometric correction. The digitized Landsat images were overlaid to identify spatial changes in mangrove cover 2018-2022. Spatial analysis was conducted using Supervised Classification techniques and the Normalized Difference Vegetation Index (NDVI) to classify mangrove areas based on their density levels. The results showed that the mangrove area in 2018 was 553.2 hectares, which decreased to 384.2 hectares in 2022, indicating a reduction of 169 hectares.