Analisis Tingkat Rekrutmen Karang di Zona Intertidal Perairan Pasir Putih, Situbondo

Ramadhan, Albitiya Rizki (2023) Analisis Tingkat Rekrutmen Karang di Zona Intertidal Perairan Pasir Putih, Situbondo. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Salah satu ekosistem penting di zona intertidal adalah terumbu karang yang memiliki peranan ekologis dan manfaat ekonomis. Karena posisinya yang terletak pada zona transisi antara ekosistem laut dan darat, terumbu karang berpotensi menerima berbagai macam dampak negatif dari dinamika-dinamika yang terjadi pada kedua ekosistem tersebut. Salah satu ekosistem terumbu karang di pesisir Jawa Timur yang diperkirakan terancam oleh aktivitas manusia adalah di kawasan Pasir Putih Situbondo yang menjadi lokasi wisata, penangkapan ikan dan biota laut lainnya. Penelitian ini ditujukan untuk mengetahui serta membandingkan densitas tingkat rekrutmen dan kekayaan genera rekrut karang pada dua tipe subsrat alami karang mati (dead coral) dan pecahan karang (coral rubble) di zona intertidal Batu Lawang, Teluk Pelita dan Karang Mayit perairan Pasir Putih, Situbondo. Rekrut karang yang diidentifikasi dan dihitung kepadatannya memiliki diamter <5 cm pada kuadrat 1x1 m2 sebanyak 5 kali replikasi pada masing-masing lokasi. Rata-rata densitas rekrut karang yang diperoleh substrat dead coral adalah 13,2 koloni/m2 dan coral rubble sebesar 16,5 koloni/m2. Densitas rekrut karang tersebut dikategorikan pada tingkat rekrutmen ‘sangat tinggi’ (>10 koloni/m2). Tercatat 20 spesies rekrutmen karang yang teridentifikasi, di Batu Lawang 1 terdapat 12 spesies, di Batu Lawang 2 terdapat 9-11 spesies, di Teluk Pelita terdapat 6-9 spesies dan di lokasi Karang Mayit terdapat 11-12 spesies. Spesies rekrutmen karang yang memiliki kelimpahan tertinggi adalah Fungia sp, Porites rus, dan Porites sp.
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One of the important ecosystems in the intertidal zone is coral reefs which have ecological roles and economic benefits. Due to its position in the transition zone between marine and terrestrial ecosystems, coral reefs have the potential to receive various kinds of negative impacts from the dynamics that occur in these two ecosystems. One of the coral reef ecosystems on the coast of East Java that is thought to be threatened by human activity is in the Pasir Putih Situbondo area which is a tourist location, fishing and other marine biota. This study aimed to determine and compare the density of recruitment rates and the richness of coral recruit genera on two types of natural substrate dead coral and coral rubble in the intertidal zone of Batu Lawang, Pelita Bay and Karang Mayit, Pasir Putih waters, Situbondo. Coral recruits were identified and their densities were calculated having a diameter of <5 cm in a 1x1 m2 square of 5 replications at each location. The average density of coral recruits obtained from dead coral substrates was 13.2 colonies/m2 and coral rubble was 16.5 colonies/m2. The coral recruitment density was categorized as 'very high' (>10 colonies/m2). 20 species of coral recruitment were identified, in Batu Lawang 1 there were 12 species, in Batu Lawang 2 there were 9-11 species, in Pelita Bay there were 6-9 species and in the Karang Mayit location there were 11-12 species. The coral recruitment species that had the highest abundance were Fungia sp, Porites rus, and Porites sp.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Intertidal, Pasir Putih Situbondo, Rekrutmen Karang, Substrat Alami, Coral recruitment, Natural Substrate
Subjects:	Q Science > QH Biology > QH541 Ecology
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Biology > 46201-(S1) Undergraduate Thesis
Depositing User:	Albitiya Rizki Ramadhan
Date Deposited:	05 Oct 2023 07:48
Last Modified:	05 Oct 2023 07:48
URI:	http://repository.its.ac.id/id/eprint/104182

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