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Yumima Sinyo
Universitas Khairun
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STUDI KEANEKARAGAMAN JENIS MAKROALGA DI PERAIRAN PANTAI PULAU DOFAMUEL SIDANGOLI KECAMATAN JAILOLO SELATAN KABUPATEN HALMAHERA BARAT Yumima Sinyo; Nurita Somadayo
JURNAL BIOEDUKASI Vol 1, No 2 (2013): Jurnal Bioedukasi Edisi Maret
Publisher : UNIVERSITAS KHAIRUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/bioedu.v1i2.4349

Abstract

Makroalga merupakan tumbuhan tingkat rendah yang tidak dapat di bedakan antara akar, batang dan daun, mengandung klorofil dan dapat berfotosintesis serta memiliki alat reproduksi yang sederhana. Selain itu makroalga juga merupakan sumber daya perairan yang di manfaatkan sebagai sumber makanan, farmasi, kosmetik dan pupuk. Secara ekonomis makroalga berfungsi sebagai sumber makanan dan pelindung bagi beberapa hewan seperti ikan dan Crustaceae. Di pulau Dofamuel banyak terdapat makroalga, tetapi masyarakat setempat belum memanfaatkannya dengan baik, sehingga upaya pelestarian dan perlindungan terhadap pertumbuhan makroalga pun masih kurang. Penelitian ini bertujuan untuk mengetahui jenis-jenis dan keanekaragaman makroalga di perairan pantai Pulau Dofamuel. Penelitian ini bersifat deskriptif, dan teknik pengumpulan data dilakukan dengan menggunakan transek serta plot berukuran 1x1 meter sebanyak 5 tiap transek, didukung dengan pengukuran berbagai parameter lingkungan. Hasil penelitian menunjukkan bahwa terdapat 9 jenis makro alga yang tergolong dalam 3 divisi, yaitu: Halimeda incrasata, Halimeda macroloba, Halimeda opuntia, Halimeda selendrica, Ceratodictyon spongiosum, Padinata australis. Eucheuma sp, Laurencia sp dan Crytonemia cranulata. Keanekaragaman jenis makro alga di stasiun I dan II yaitu: jenis Halimeda makroloba dengan nilai keanekaragaman (0,357), dikatagorikan tinggi, jenis Halimeda opuntia dengan nilai keanekaragaman (0,344), dikategorikan rendah, dan jenis Cryptonemia cramulata dengan nilai keanekaragaman (0,030) dikategorikan rendah.
PERTUMBUHAN DAN FAKTOR KONDISI T. NAVALIS PADA SALINITAS BERBEDA DI HABITAT ALAMI Yumima Sinyo; Tamrin Robo
JURNAL BIOEDUKASI Vol 5, No 1: Jurnal Bioedukasi Edisi April 2022
Publisher : UNIVERSITAS KHAIRUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/bioedu.v5i1.4404

Abstract

T. navalis has high reproducibility and is widely distributed according to physiological tolerance and conditional factors. The purpose of this study was to analyze the growth and condition factors of Teredo navalis Linnaeus 1758 in the mangrove root habitat of Avicennia sp. This type of research is a case study, using the purposive sampling method. Data collection was carried out at two research stations, starting with determining the roots and stems of Avicennia sp mangroves in 70 cm pieces, then observing growth and taking samples. The results showed that the growth of T. navalis in the root habitat of Avicennia sp at treatment S1 (7‰) was 9.96±0.06 gr and the highest at treatment S3 (21‰) was 18.20±0.02 gr. salinity and absolute weight growth of T. navalis with a quadratic pattern with the equation Y = 0.1524x+11.345 R2 = 0.1506, and the optimum point of salinity of 14‰ media can produce maximum absolute weight growth of T.navalis (Y) = 15.33 gr. The results of the calculation of the value of the condition factor (FK) on the relationship between length and weight of T. navalis in the root habitat of Avicennia sp W = 26.29 + 0.39x. Based on the graph of the relationship between length and weight, the value of Y = 00338x2 + 1.8421 + 57,115 and R2 = 0.5834.
ANALISIS SALT CONTENT PADA MEDIA AKAR DAN DAUN MANGROVE SECRETER AVICENNIA Sp. Yumima Sinyo; Abdulrasyid Tolangara; Ningsi Saibi; Rasmita Hi. Sabtu
EDUKASI Vol 20, No 2 (2022): EDISI OKTOBER 2022
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/j.edu.v20i2.5390

Abstract

The difference in the amount of salt excretion in mangrove species occurs due to differences in Casparian strips (Gasparini strips) in the root endodermis. Mangrove Avicennia sp has salt-secreting glands. These glands secrete NaCl salts through an active process. The purpose of this study was to analyze the salt content in the roots and leaves of the mangrove secreter Avicennia Sp. in Gotowasi Village, East Halmahera. This research was designed based on the type of case study (case study) and quantitative descriptive using a purposive sampling method and research experiments conducted on independent variables. Root samples were taken at the research location, while the salt content measurement was carried out at the UNKHAIR Biology laboratory using a refractometer. Salt content data were analyzed by means of potential water pressure, namely the sum of potential pressure and osmotic pressure. The results showed that the salt content of roots and leaves of Mangrove secreter Avicennia sp in different water conditions. The results of the Salt Content measurement of Avicennia sp roots at high tide conditions at station I, namely 35‰ (per mile), and station II, namely 25‰. Furthermore, the results of the measurement of salt content in water conditions at low tide at station I the average value is 21‰ and station II is 17‰. The measurement results of salt content in Avicennia sp mangrove leaves at high tide conditions at station I is 15‰, while at station II it is 21‰. Furthermore, the results of measuring the salt content in water conditions at low tide at station I, the average value obtained is 25‰. While at station II it is 30‰.
Co-Authors A. R. Tolangara, A. R. Nurita Somadayo Rasmita Sabtu Mita Saibi, Ningsi Tamrin Robo