Sagita, Feny and Defri Yona,, S.Pi, M.Sc.stud., D.Sc and Dhira Khurniawan Saputra,, S.Kel, M.Sc (2022) Struktur Komunitas Echinodermata Dan Hubungannya Dengan Tutupan Lamun Di Pantai Bama Dan Pantai Kajang Taman Nasional Baluran, Situbondo Jawa Timur. Sarjana thesis, Universitas Brawijaya.
Abstract
Padang Lamun dan Echinodermata saling berasosiasi dan membentuk sistem ekologi. Padang lamun menyediakan habitat bagi Echinodermata sedangkan Echinodermata yang merupakan detritus feeder berperan dalam mendekomposisi bahan organik di padang lamun. Taman Nasional Baluran merupakan kawasan pelestarian alam yang mempunyai ekosistem asli salah satunya ekosistem lamun serta terdapat tumbuhan dan hewan yang beranekaragam. Penelitian ini dilakukan untuk mengetahui keanekaragaman dan struktur komunitas Echinodermata serta hubungan antara tutupan lamun dengan Echinodermata di Pantai Bama dan Pantai Kajang Taman Nasioanl Baluran. Penelitian dilakukan pada bulan Mei 2022 di Taman Nasional Baluran, Situbondo Jawa Timur. Data yang diambil meliputi parameter fisika kimia perairan yaitu suhu, salinitas, pH, dan oksigen terlarut, data tutupan lamun, dan data Echinodermata. Pengambilan data fisika dan kimia perairan dilakukan secara in situ yaitu langsung di lapang. Pengambilan data tutupan lamun dan Echinodermata dilakukan dengan metode transek kuadran berukuran 50 x 50 cm2. Analisis struktur komunitas Echinodermata meliputi kekayaan jenis, kepadatan, indeks keanekaragaman, keseragaman, dan dominansi. Metode korelasi pearson digunakan untuk mengetahui hubungan antara tutupan lamun dengan Echinodermata. Hasil penelitian menunjukkan kondisi fisika dan kimia perairan berada dalam batas aman dan baik untuk kehidupan Echinodermata. Tutupan lamun di Pantai Bama sebesar 74,34% dan di Pantai Kajang sebesar 67,61% dan keduanya termasuk dalam kategori padat. Sebanyak 6 jenis spesies Echinodermata ditemukan di Pantai Bama dan 5 jenis spesies ditemukan di Pantai Kajang. Kepadatan jenis Echinodermata di Pantai Bama sebesar 11 ind/m2 lebih tinggi dibandingkan kepadatan jenis di Pantai Kajang sebesar 9 ind/m2, sedangkan untuk presentase kepadatan relatif di kedua pantai tersebut tertinggi yaitu dari spesies Holothuria atra, di Pantai Bama sebesar 58,1% dan di Pantai Kajang sebesar 59,2%. Keanekaragaman, keseragaman, dan dominansi di Pantai Bama dan Kajang memiliki nilai yang sama yaitu keanekaragaman sedang, keseragaman tinggi, dan dominansi rendah. Dari hasil struktur komunitas Echinodermata tersebut dapat diartikan bahwa kondisi ekosistem di Pantai Bama dan Kajang termasuk cukup seimbang, produktivitas cukup dan tidak terlalu ada tekanan ekologis. Hubungan antara tutupan lamun dan Echinodermata menunjukkan hubungan dengan tingkat korelasi yang sangat kuat dan jenis hubungan yang positif, artinya semakin tinggi tutupan lamun maka akan semakin banyak juga Echinodermata yang ada di ekosistem tersebut.
English Abstract
Seagrass and Echinoderms associate with each other and form an ecological system. Seagrass beds provide habitat for echinoderms while echinoderms which are detritus feeders play a role in decomposing organic matter in seagrass beds. Baluran National Park is a nature conservation area that has native ecosystems, one of which is the seagrass ecosystem and there are various plants and animals. This study was conducted to determine the diversity and community structure of echinoderms and the correlation between seagrass cover and echinoderms at Bama Beach and Kajang Beach, Baluran National Park. The research was conducted in May 2022 in Baluran National Park, Situbondo, East Java. The data taken include the physical and chemical parameters of the waters, namely temperature, salinity, pH, and dissolved oxygen, data on seagrass cover, and data on echinoderms. Water physics and chemistry data were collected in situ, that is, directly in the field. Data collection for seagrass cover and Echinoderms was carried out using a quadrant transect method measuring 50 x 50 cm2. Analysis of the Echinoderm community structure includes species richness, density, diversity index, uniformity, and dominance. Pearson correlation method was used to determine the relationship between seagrass cover and Echinoderms. The results showed that the physical and chemical conditions of the waters were within safe and good limits for the life of echinoderms. Seagrass cover in Bama Beach was 74.34% and Kajang Beach was 67.61% and both were included in the dense category. A total of 6 species of Echinoderms were found on Bama Beach and 5 species of species were found on Kajang Beach. The species density of Echinoderms on Bama Beach is 11 ind/m2, higher than the species density on Kajang Beach of 9 ind/m2, while the percentage of relative density on the two beaches is the highest, namely Holothuria atra, 58.1% on Bama Beach and in Kajang Beach by 59.2%. Diversity, uniformity, and dominance in Bama and Kajang Beaches have the same value, namely moderate diversity, high uniformity, and low dominance. From the results of the Echinoderm community structure, it can be interpreted that the ecosystem conditions in Bama and Kajang Beaches are quite balanced, productivity is sufficient and there is not too much ecological pressure. The relationship between seagrass cover and Echinoderms shows a relationship with a very strong correlation level and a positive type of relationship, meaning that the higher the seagrass cover, the more Echinoderms in the ecosystem.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0522080266 |
| Subjects: | 500 Natural sciences and mathematics > 551 Geology, hydrology, meteorology > 551.4 Geomorphology and hydrosphere > 551.46 Oceanography and submarine geology |
| Divisions: | Fakultas Perikanan dan Ilmu Kelautan > Ilmu Kelautan |
| Depositing User: | soegeng sugeng |
| Date Deposited: | 20 Mar 2023 03:08 |
| Last Modified: | 20 Mar 2023 03:08 |
| URI: | http://repository.ub.ac.id/id/eprint/197721 |
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