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Journal : Biospecies

Komposisi, Keanekaragaman Dan Rasio Kelamin Ikan Elasmobranchii Asal Sungai Kakap Kalimantan Barat Candramila, Wolly; Junardi, Junardi
Biospecies Vol. 1 No. 2 (2008): Agustus 2008
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/biospecies.v1i2.268

Abstract

Sifat biologi elasmobranchii seperti fekunditas rendah, pertumbuhan lambat, umur relatif panjang danresiko kematian tinggi pada semua tingkat umur menjadikannya kelompok ikan yang memiliki resiko kepunahan palingcepat dibandingkan kelompok lain. Tujuan penelitian ini untuk mengetahui komposisi, keanekaragaman dan rasiokelamin ikan elasmobranchii. Hasil penelitian dikoleksi sebanyak 31 spesies yang termasuk dalam 7 famili dan 238individu. Ikan pari ditemukan sebanyak 24 spesies dan 169 individu, sedangkan hiu tujuh spesies dan 69 individu.Indeks keanekaragaman ikan elasmobranchii antara 1,77-3,75.
Phytoplankton Community Structure of Oxbow Lake-Sinau, Kapuas Hulu, West Kalimantan junardi; Candramila, Wolly; Mundiarto, Sigit
Biospecies Vol. 12 No. 2 (2019): Juli 2019
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (196.699 KB) | DOI: 10.22437/biospecies.v12i2.7644

Abstract

The Sinau Lake is one of the oxbow lakes in Kapuas Hulu, West Kalimantan, which will be used for various purposes, but limnological data is not available. The research objective was to obtain data on the structure of the phytoplankton community and the water quality conditions of Sinau Lake so that it could be used as preliminary data for management and utilization. Samples were taken using purposive sampling method. Water quality is still good with a high plankton diversity index, low dominance and high evenness. Water quality still support the life of aquatic biota or aquaculture.