CD Skripsi

Status Trofik Danau Lubuk Siam Berdasarkan Indeks Nygaard

---

Nygaard Index can be used to determine the trophic state of waters. Calculation of this index is based on the number of phytoplankton species in these following groups, namely Desmidiaceae, Myxophyceae, Chlorococcales, Centric diatom, Pennate diatom and Euglenophyceae. To understand the trophic state of the Lubuk Siam lake, a research has been conducted in February - March 2017. There were three sampling stations, namely station 1 (inlet area), station 2 (the middle of the lake) and station 3 (outlet area). In each station there were three sampling points, in the surface, 2 secchi depth, and 3 secchi depth. Sampling were conducted 3 times, once/week. Water quality parameters measured were phytoplankton (species and abundance), transparency, temperature, pH, nitrate, phosphate, Dissolved oxygen and free carbon dioxide. Results shown that there are 53 species of phytoplankton present, namely Desmidiaceae class (11 species), Myxophyceae class (6 species), Chlorococcales ordo (23 species), Centric diatom ordo (6 species), Pennate diatom (5 species) and Euglenophyceae division (2 species). The water quality parameters were as follows: transparency 63-89 cm, temperature 28.5-30.53 0C, pH 6.83-7.27, nitrate 0.7-0.17 mg/L, phosphate 0.12-0.16 mg/L, Dissolve oxygen 4.10-7.84 mg/L, free carbon dioxide 5.29-15.98 mg/L. Nygaard Index value of the Lubuk Siam Lake was 2.1 – 2.83, and it can be categorized as mesotrophic to eutrophic.
Keywords: Lubuk Siam lake, Nygaard Index, phytoplankton, trophic state
1). Student of the Fisheries and Marine Science Faculty, Riau University
2). Lecture of the Fiaheries and Marine Science Faculty, Riau University

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

04 01. 117 (0039)

Penerbit

Pekanbaru : Universitas Riau – Fakultas Perikanan Dan Ilmu Keluatan – Manajemen Sumber Daya Perairan., 2017

Deskripsi Fisik

v, 66 hlm.; ill.; 29 cm

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

04 01. 117 (0039)

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

MANAJEMEN SUMBER DAYA PERAIRAN

Info Detail Spesifik

-

Pernyataan Tanggungjawab

DAUS

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar