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All Journal Jurnal Ilmu Lingkungan Jurnal Ilmu Dasar
Riyandi Riyandi
Jurusan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Tanjungpura
Control & Systems Engineering Environmental Science Mathematics

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Habitat Characteristic of Softshell Turtle (Amyda cartilaginea Boddaert,1770) in Engkelitau River Sekadau Regency, West Borneo Florensius Joko Arbi; Ari Hepi Yanti; Riyandi Riyandi
Jurnal ILMU DASAR Vol 22 No 1 (2021)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v22i1.17041

Abstract

Information about the character of softshell turtle’s habitat (Amyda cartilaginea) is needed as conservation effort and to prevent softshell turtle’s extinction. The research on habitat, morphometric holes, and environmental factors that suitable for softshell turtle is needed to be approved. The research was conducted in Engkelitau River, Sekadau, West Borneo. Sampling area was divided into 3 stations based on the type of cover between primary dryland forest, farming land and open field. Data on the softshell turtle’s number, holes and scratch marks were analyzed using principal component analysis (PCA). The highest river slope at Station I is 60o and the lowest river slope at Station III is 42o. Substrate’s type that found in Engkelitau River consist of sandy, dusty, and muddy substrates. The number of softshell turtle’s hole in the Engkelitau River is 45 holes, consisting one hole with softshell turtle, 15 holes with scratch marks, and 29 holes not including both of them. The highest height, width and distance between holes are in Station I and both hole’s length and height from the surface as well as highest river are in Station II. The environmental factors that affected A. cartilaginea in the Engkelitau River consisted of river velocity and river’s slope with loading factors of 4.08135 and 3.94019 respectively. The characteristics of A. cartilaginea’s hole in the Engkelitau River including a pond in the hole, an air hole, and located in the middle of a riverbank. Keywords: habitat characteristics, Amyda cartilaginea, softshell turtle, Engkelitau river.
Penilaian Status Kualitas Air Sungai Kapuas Kecil Kalimantan Barat Menggunakan Biota Bentik Junardi Junardi; Riyandi Riyandi
Jurnal Ilmu Lingkungan Vol 22, No 1 (2024): January 2024
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.22.1.184-192

Abstract

Sungai Kapuas Kecil merupakan percabangan Sungai Kapuas di bagian hilir yang mengalami berbagai tekanan lingkungan akibat aktivitas di daratan sehingga dapat mengubah kualitas airnya. Kualitas air sungai ini lebih banyak ditentukan dengan menggunakan parameter fisika dan kimia, sementara itu parameter biota bentik masih jarang digunakan. Tujuan penelitian ini untuk menentukan status kualitas air sungai Kapuas Kecil menggunakan biota bentik makrozoobentos dan perifiton. Penelitian ini menggunakan metode survei dengan menetapkan stasiun sampling berdasarkan rona lingkungan dan kondisi riparian. Data struktur komunitas biota dianalisis secara deskriptif. Hasil penelitianberdasarkan indeks komunitas makrozoobentos dan perifiton menunjukkan kualitas air sungai Kapuas Kecil memiliki status cemar ringan sampai sedang dengan kandungan fosfat tinggi.
Co-Authors Ari Hepi Yanti Florensius Joko Arbi Junardi Junardi