Paramadipta, Hardhas (2011) Pengelompokan Anak Sungai Welang Desa Sumberngepoh Kecamatan Lawang Kabupaten Malang berdasarkan Makrozoobenthos. Sarjana thesis, Universitas Brawijaya.
Abstract
Sumber Krabyakan (Sumber Gondang, Sumber Duren, Sumber Towo, Sumber Lo) merupakan sumber air permukaan yang membentuk aliran anak Sungai Welang. Tata guna lahan di sekitar sungai mempengaruhi nir kualitas air dan kualitas air sungai yang mempengaruhi komunitas makrozoobenthos. Komunitas makrozoobenthos dan faktor lingkungannya dapat digunakan untuk mengelompokkan stasiun pengambilan contoh di anak Sungai Welang. Hasil pengelompokkan anak Sungai Welang dapat mencerminkan aktivitas manusia yang ada di sekitar sungai dan digunakan sebagai umpan balik bagi perencanaan pengelolaan anak Sungai Welang yang terpadu. Tujuan penelitian ini adalah mengelompokkan anak Sungai Welang di Desa Sumberngepoh Kecamatan Lawang Kabupaten Malang berdasar komunitas makrozoobenthos dan faktor ekologisnya. Penelitian ini dilakukan di anak Sungai Welang Desa Sumberngepoh Kec. Lawang dan Lab. Ilmu-Ilmu Perairan Fakultas Perikanan dan Ilmu Kelautan Universitas Brawijaya Malang selama Agustus 2010 - Juni 2011. Materi penelitian ini adalah air sungai, komunitas makrozoobenthos, dan data fisik lingkungan yang dicatat pada ”field sheet”. Parameter perubahan ekosistem sungai yang diukur meliputi faktor fisik sungai (kecepatan arus dan tipe substrat dasar), faktor fisika (suhu air), dan juga faktor kimia air sungai (pH, amonia, ”Total Organic Matter”, kesadahan, dan ”Dissolved Oxygen”). Metode yang digunakan dalam penelitian ini ialah metode survai. Penentuan stasiun pengambilan contoh didasarkan pada perbedaan tata guna lahan yang terbagi menjadi 15 stasiun pengambilan contoh. Pengambilan contoh makrozoobenthos menggunakan teknik ”kicking” sepanjang 10 m di daerah ”riflle” menggunakan jala tangan dengan mata jaring 500μm. Contoh makrozoobenthos diawetkan menggunakan alkohol 96% dan diidentifikasi menggunakan kunci identifikasi yang tersedia Quigley (1977), Smith (1996), Hawking and Smith (1997), Merrit dan Cummins (1978), de Zwart dan Trivedi (1995). Analisis data dibantu program CANOCO for Windows 4.5 menggunakan tipe analisis CCA (”Canonical Correspondence Analysis”). Selama penelitian diperoleh data kecepatan arus 28,6 – 123,3 cm/s, tipe substrat kombinasi “boulder”, “cobble”, “pebble”, “gravel”, “sand” yang mengalami “smothering”, suhu air 24 – 26 oC, pH 6-8, DO 4,473 – 7,915 mg/l, TOM 1,264 – 39,184 mg/l, amonia 1,264 – 39,184 mg/l, dan kesadahan 48 – 96 mg/l. Makrozoobenthos yang ditemukan di anak Sungai Welang 40 taksa yang terdiri dari 10 ordo yaitu Amphipoda, Diptera, Lumbricida, Decapoda, Trichoptera, Ephemeroptera, Coleoptera, Hemiptera, Odonata, Lepidoptera yang berasal dari 4 kelas yaitu Oligochaeta, Crustacea, Gastropoda, dan Insecta.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FPR/2011/126/051200637 |
| Subjects: | 300 Social sciences > 333 Economics of land and energy > 333.9 Other natural resources > 333.91 Water and lands adjoining bodies of water |
| Divisions: | Fakultas Perikanan dan Ilmu Kelautan > Manajemen Sumberdaya Perairan |
| Depositing User: | Endang Susworini |
| Date Deposited: | 22 May 2012 10:23 |
| Last Modified: | 21 Oct 2021 07:24 |
| URI: | http://repository.ub.ac.id/id/eprint/132799 |
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