Keanekaragaman dan Dominansi Rumput Laut Hidrokoloid pada Substrat yang berbeda Di Perairan Pantai Karangtengah Nusakambangan Cilacap

BioEksakta : Jurnal Ilmiah Biologi Unsoed

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Title Keanekaragaman dan Dominansi Rumput Laut Hidrokoloid pada Substrat yang berbeda Di Perairan Pantai Karangtengah Nusakambangan Cilacap
KEANEKARAGAMAN DAN DOMINANSI RUMPUT LAUT HIDROKOLOID PADA SUBSTRAT YANG BERBEDA DI PERAIRAN PANTAI KARANGTENGAHNUSAKAMBANGAN CILACAP
 
Creator Ardiyanto, Bayu
Insan, Achmad Ilalqisny
Widyartini, Dwi Sunu
 
Description The waters of Karangtengah Nusakambangan Cilacap have various types of substrates, namely sand, coral and mixture. Beach conditions with many types of substrates allow various species of seaweed to grow. Information regarding the diversity and dominance of seaweed producing hydrocolloid species has not been much studied in the waters of Karangtengah Beach. This study aims to determine the diversity and dominance of seaweed producing hydrocolloids on different substrates in the waters of Karangtengah Nusakambangan Cilacap. This study uses a survey method with a sampling technique that is the selected random transect method. Six transect lines were made perpendicular to the coastline and the distance between transects was 25 m. Each transect was made three plots, each plot measuring 1x1 m based on the substrate (coral, sand, and mixture). The main parameters observed were the amount of biomass and the number of species. Supporting parameters observed were environmental factors namely temperature, salinity, pH, current speed and depth. The number of hydrocolloid seaweed species found was 10 species of seaweed with details of 5 alginate-producing species, 3 agar-producing species, and 2 carrageenan-producing species. The diversity index value in the coastal waters of Karangtengah between 0,6-2,0 was classified as moderate diversity. The dominance index value in the coastal waters of Karangtengah between 0,2-0,6 was classified as low dominance.
Perairan Pantai Karangtengah Nusakambangan Cilacap memiliki berbagai macam tipe substrat yaitu pasir, karang, dan campuran. Kondisi pantai dengan banyak tipe substrat memungkinkan berbagai spesies rumput laut untuk tumbuh. Informasi terkait keanekaragaman dan dominansi spesies rumput laut penghasil hidrokoloid di perairan Pantai Karangtengah belum banyak diteliti. Penelitian ini bertujuan untuk mengetahui keanekaragaman dan dominansi rumput laut penghasil hidrokoloid pada substrat yang berbeda di perairan Pantai Karangtengah Nusakambangan Cilacap. Penelitian ini menggunakan metode survei dengan teknik pengambilan sampel yaitu metode transek acak terpilih. Sebanyak enam garis transek dibuat secara tegak lurus dengan garis pantai dan jarak antar transek 25 m. Setiap transek dibuat tiga plot yang masing-masing plot berukuran 1x1 m berdasarkan substratnya (karang, pasir, dan campuran). Parameter utama yang diamati yaitu jumlah biomassa dan jumlah spesies. Parameter pendukung yang diamati adalah faktor lingkungan yaitu temperatur, salinitas, pH, kecepatan arus dan kedalaman. Jumlah spesies rumput laut hidrokoloid yang ditemukan sebanyak 10 spesies rumput laut dengan rincian 5 spesies penghasil alginat, 3 spesies penghasil agar, dan  2 spesies penghasil karaginan. Nilai indeks keanekaragaman di perairan pantai karangtengah antara 0,6-2,0 tergolong keanekaragaman sedang. Nilai indeks dominansi di perairan Pantai Karangtengah antara 0,2-0,6 tergolong dominansi rendah.
 
Publisher Fakultas Biologi Universitas Jenderal Soedirman
 
Date 2020-12-23
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://jos.unsoed.ac.id/index.php/bioe/article/view/2999
10.20884/1.bioe.2020.2.3.2999
 
Source BioEksakta : Jurnal Ilmiah Biologi Unsoed; Vol 2 No 3 (2020): BioEksakta; 350-359
2714-8564
 
Language eng
 
Relation http://jos.unsoed.ac.id/index.php/bioe/article/view/2999/1961
 
Rights Copyright (c) 2020 BioEksakta : Jurnal Ilmiah Biologi Unsoed
 

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