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Sains
Malaysiana 41(12)(2012): 1517–1525
Fish Diversity and Water Quality during Flood Mitigation Works at Semariang Mangrove
Area, Kuching, Sarawak, Malaysia
(Kepelbagaian Ikan dan Kualiti Air semasa Kerja Mitigasi Banjir di
Kawasan Paya Bakau
Semariang, Kuching, Sarawak, Malaysia)
L. Nyanti*, R. Nur ‘Asikin & T.Y. Ling
Faculty of Resource Science and Technology,
Universiti Malaysia Sarawak,
94300 Kota Samarahan, Sarawak, Malaysia
G. Jongkar
Institute of Biodiversity and Environmental
Conservation, Universiti Malaysia Sarawak
94300 Kota Samarahan, Sarawak, Malaysia
Diserahkan: 21 Jun 2010 / Diterima: 31 Januari
2012
ABSTRACT
This study aimed to document the fish diversity and water quality
at Semariang mangrove area, Kuching, Sarawak, which is located at the eastern
part of Kuching Wetland National Park. Field samplings were carried out in 2009
during the construction of the flood mitigation channel at the eastern part of
the park. A total of 21 families represented by 37 species of fish were caught
from the area. The six dominant families in terms of the number of individuals
caught were Mugilidae (16%), Leiognathidae (16%), Ambassidae (11%), Ariidae (9%), Lutjanidae (8%)
and Plotosidae (6%). In terms of the percentage of six dominant genera
based on the number of individuals caught, 16% was represented by Valamugil,
11% by Ambassis, 10% by Gazza, 9% by Arius, 8% by Lutjanus and 6% by Plotosus. The values of diversity and richness indices were
lower at stations located close to the flood mitigation channel. Similarly, the
concentrations of dissolved oxygen were lower and total suspended solids were
significantly higher at stations close to the channel and sand mining area.
Therefore, fish fauna and water quality at Semariang mangrove area were
affected during the construction of the flood mitigation channel.
Keywords: Fish diversity; flood mitigation channel; Semariang
mangroves; water quality
ABSTRAK
Kajian ini bertujuan untuk mendokumentasi kepelbagaian ikan dan
kualiti air di kawasan paya bakau Semariang, Kuching, Sarawak, yang terletak di
bahagian timur Taman Negara Tanah Lembab Kuching. Kerja lapangan telah
dijalankan pada tahun 2009 semasa kerja membina saliran mencegah banjir
dilakukan di bahagian timur kawasan taman. Sebanyak 21 famili ikan yang
mewakili 37 spesies ditangkap di kawasan ini. Enam famili ikan yang paling
banyak daripada segi bilangan individu yang ditangkap ialah Mugilidae (16%), Leiognathidae (16%), Ambassidae (11%), Ariidae (9%), Lutjanidae (8%) dan Plotosidae (6%).
Enam genus ikan yang paling banyak daripada segi bilangan
individu yang ditangkap ialah Valamugil (16%), Ambassis (11%), Gazza (10%), Arius (9%), Lutjanus (8%) dan Plotosus (6%).
Bagi stesen-stesen yang terletak berhampiran dengan saliran mencegah banjir,
nilai indeks kepelbagaian dan kekayaan adalah lebih rendah, kandungan kepekatan
oksigen terlarut juga lebih rendah dan pepejal terampai adalah lebih tinggi
secara signifikan. Oleh itu, fauna ikan dan kualiti air di kawasan paya bakau
Semariang telah dipengaruhi semasa kerja pembinaan saliran mencegah banjir.
Kata kunci: Kepelbagaian ikan; kualiti air; paya
bakau Semariang; saliran mencegah banjir
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*Pengarang untuk surat-menyurat; email: lnyanti@frst.unimas.my
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