Kesimpulan yang dapat diambil dari hasil penelitian ini adalah:
1. Ikan T. sarasinorum tersebar luas di daerah litoral yang dangkal dan menjadikan daerah ini sebagai tempat pemijahan dan mencari makanan. Ikan ini memiliki preferensi daerah litoral yang luas, yang memiliki substrat dasar yang terdiri atas pasir, kerikil, dan batuan.
2. Ikan T. sarasinorum memiliki dua tipe habitat pemijahan yaitu arena batu berpasir dan arena perakaran.
3. Ikan yang berada di arena pemijahan adalah ikan yang siap memijah.
4. Ikan betina yang memijah meletakkan telur di antara pasir dan di antara alga atau sponge.
5. Puncak pemijahan terjadi pada akhir musim kemarau pada saat curah hujanmulai meningkat dan muka air danau naik.
6. Peristiwa pemijahan pasangan yang sedang kawin sering diikuti oleh ikan jantan pesaing pembuahan dan jantan tunggal yang tampak memakan sisa- sisa sperma di arena pemijahan.
7. Parameter fisik kimiawi perairan masih berada pada kondisi yang layak untuk kehidupan ikan di habitatnya.
Berdasarkan hasil penelitian ini disarankan untuk:
1. Menetapkan lokasi P. Otuno I dan P. Otuno II sebagai daerah perlindungan ikan T. sarasinorum.
2. Mengurangi bahan masukan yang dapat menurunkan kecerahan perairan dan menutupi substrat dasar.
3. Tidak menjadikan danau sebagai tempat budidaya ikan dan organisme akuatik lain yang bukan asli.
4. Upaya konservasi ikan dan arena pemijahannya perlu segera dimulai dengan melibatkan pemerintah, perusahaan, dan masyarakat.
5. Memulai upaya penangkaran ikan yang hasilnya nanti dapat diperjual belikan sehingga kelangsungan hidup ikan di alam tetap terjaga.
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Lampiran 1 Deskripsi lokasi penelitian
Lokasi penelitian
Deskripsi lokasi penelitian Kedalaman Tutupan substrat dasar Vegetasi dasar perairan Vegetasi di tepian danau Keterangan lain Zona 1
1.Sungai Lawa 0,30 – 6,00 m pasir 30%, -
Myrtaceae
Sungai ini berada di bagian paling hulu Danau Matano, mengalirkan air masuk ke dalam danau sepanjang tahun.
kerikil 20%, batu bulat 50%.
2. Desa Matano 0,30 - 5,00 m pasir 20%, -
Myrtaceae Daratan di sebelah barat adalah permukiman penduduk dan kebun.
kerikil 80%.
3.Pantai Paku 0,30 – 6,00 m pasir 20%, -
Pohon sagu, tumbuhan rawa
Pinggiran danau ke arah daratan berupa rawa-rawa. kerikil 30%,
batu bulat 50%.
4. Pantai Sokoio 0,40 – 6,00 m batu bulat 60%, - Myrtaceae, Tebing di tepian danau terdapat jalan lingkar danau
yang memisahkan hutan dan danau. Dinding tepian danau berupa batuan besar – batuan dasar. Kontur dasar curam.
batu besar 40%.
Nephentes
Lampiran 1 (lanjutan)
Lokasi penelitian
Deskripsi lokasi penelitian Kedalaman Tutupan substrat
dasar Vegetasi dasar perairan Vegetasi di tepian danau Keterangan lain Zona 2
5. Pantai Kupu-kupu 0,40 – 4,00 m pasir 20%,
kerikil 20%, batu bulat 60%. Otellia mesenterium Myrtaceae genus Kjellbergiodendron, Xanthostemon, Eugenia
Daratan di tepian danau berupa lahan datar dengan sedikit rawa-rawa. Daerah litoral dengan kontur dasar landai dan pinggiran danau tampak mengalami abrasi.
6. Pantai Salonsa I-A 0,30 - 4,00 m pasir 30%,
kerikil 20%, batu bulat 40%, batu besar 10%. Otellia mesenterium Kjellbergiodendron, Xanthostemon, dan Eugenia.
Wilayah Pantai Salonsa merupakan daerah permukiman PT INCO (di bagian selatan danau), lokasi rekreasi pantai.
8. Pantai Salonsa I-B 0,30 - 4,00 m pasir 30%,
kerikil 40%, batu bulat 30%. Otellia mesenterium Kjellbergiodendron, Xanthostemon, dan Eugenia.
Wilayah Pantai Salonsa merupakan daerah permukiman PT INCO (di bagian selatan danau), lokasi rekreasi pantai.
9. Pantai Old Camp 0,30 – 5,00 m pasir 30%,
kerikil 55%, batu bulat 15%.
- Pohon mangga,
Myrtacea
Kompleks permukiman karyawan PT INCO. Kontur dasar landai.
10.S. Tanah Merah 0,40 – 6,00 m pasir 40%,
kerikil 40%, batu bulat 20%.
- Myrtacea,
tumbuhan rawa
Muara sungai ini mempunyai kandungan lumpur yang tinggi. Sebelah kiri dan kanan sungai adalah daerah rawa-rawa. Lahan dekat tebing bekas kebun merica.
Lampiran 1 (lanjutan)
Lokasi penelitian
Deskripsi lokasi penelitian Kedalaman Tutupan substrat
dasar
Vegetasi dasar perairan
Vegetasi di tepian
danau Keterangan lain
Zona 3
11. P. Otuno I-A 0,30 – 2,00 m pasir 40%,
kerikil 20%, batu bulat 20%, batu besar 20%.
- Myrtacea Bagian daratan ke arah selatan danau adalah hutan, kontur dasar landai.
12. P. Otuno I-B 0,30 - 4,00 m kerikil 30%,
batu bulat 70%.
- Myrtacea Hutan alami, kontur dasar curam
13. P. Otuno II-A 0,40 – 4,00 m lumpur/pasir 30%,
kerikil 40%, batu besar 30%.
- Pandanus sp. Hutan alami. Sebelah selatan hingga
tenggara pulau berupa selat, kontur dasar relatif datar.
14. P. Otuno II-B 0,40 – 6,00 m lumpur/pasir 20%,
batu bulat 10%, batuan dasar 70%
- Myrtacea Sisi selatan sebelah barat hingga ke sebelah timur terdiri dari dinding batu-batu besar. Kontur dasar sebelah barat daya searah jarum jam hingga ke sebelah timur adalah daerah curam. 15. S. Petea 0,40 – 2,5 m lumpur/pasir 50%, kerikill 30%, batuan dasar 20%. - Pandanus sp., Myrtacea
Outlet danau, berarus kuat, dasar perairan banyak terdapat cangkang kerang. Lahan daratan adalah lahan tambang; lahan bawah berupa rawa-rawa. 16. S. Soluro 0,30 – 4,00 m pasir 30%, kerikil 40%, batu bulat 30%. Myrtacea, Nephentes, Tumbuhan rawa
Daerah daratan merupakan rawa-rawa. Kontur dasar curam.
Lampiran 3 Curah hujan rata-rata harian wilayah selama penelitian
Waktu Curah hujan (mm) Tinggi muka air (m dpl)
Sep '08 6,65 392,65 Okt '08 9,00 392,62 Nov '08 9,07 392,62 Des '08 9,41 392,64 Jan '09 4,42 391,53 Feb '09 6,00 391,46 Mar '09 6,00 391,47 Apr '09 14,78 391,55 Mei '09 11,37 391,73 Jun '09 2,98 391,84 Jul '09 4,08 392,30 Agu '09 4,30 392,62