Biomass and Habitat Characteristics of Epiphytic Macroalgae in the Sibuti Mangroves, Sarawak, Malaysia

Abstract

Abstrak: Bakau menyokong himpunan kepelbagaian "epibiont" macroalgal atas akar dan batang terapung pokok bakau. Makroalga membekalkan nutrien kepada pengguna utama dalam rantaian makanan akuatik dan telah dilaporkan menjadi penyumbang besar kepada ekosistem marin. Kepelbagaian spesies, biomass, dan ciri-ciri habitat makroalga bakau telah dikaji di tiga stesen bakau di muara Sibuti, Sarawak, Malaysia, dari bulan November 2012 hingga Oktober 2013. Tiga kumpulan makroalga direkodkan dan telah didapati tumbuh pada akar terapung pokok bakau, iaitu Rhodophyta (Caloglossa ogasawaraensis, Caloglossa adhaerens, Caloglossa stipitata, Bostrychia anomala, dan Hypnea sp.), Chlorophyta (Chaetomorpha minima dan Chaetomorpha sp.), dan Phaeophyta (Dictyota sp.). Biomass makroalga tidak dipengaruhi (p>0.05) mengikut musim di habitat hutan bakau. Spesies makroalga iaitu Hypnea sp. menyumbang biomass yang paling tinggi di kedua-dua Stesen 1 (210.56 mg/cm 2 ) dan Stesen 2 (141.72 mg/cm 2 ), manakala biomass tertinggi disumbangkan oleh B. anomala (185.89 mg/cm2) di Stesen 3. Kajian ini menunjukkan bahawa taburan dan himpunan spesies daripada makroalga bakau dipengaruhi oleh parameter alam sekitar seperti nutrien dari air, pepejal terlarut, dan kemasinan di habitat muara bakau Sibuti, Sarawak.Kata kunci: Makroalga, Bostrychia anomala, Biomass, Bakau, Sarawak Abstract: Mangroves support diverse macroalgal assemblages as epibionts on their roots and tree trunks. These algae provide nutrients to the primary consumers in the aquatic food web and have been reported to be substantial contributors to marine ecosystems. The species diversity, biomass, and habitat characteristics of mangrove macroalgae were investigated at three stations in the Sibuti mangrove estuary, Sarawak, Malaysia, from November 2012 to October 2013. Three groups of macroalgae were recorded and were found to be growing on mangrove prop roots, namely Rhodophyta (Caloglossa * 2 ) at Station 3. This study shows that the species distribution and assemblages of mangrove macroalgae were influenced by environmental parameters such as water nutrients, dissolved solids, and salinity in the estuarine mangrove habitats of Sibuti, Sarawak.

Aliinostoc bakau sp. nov. (Cyanobacteria, Nostocaceae), a New Microcystin Producer from Mangroves in Malaysia

“…Studies of micro-organisms have been conducted only on selected groups, for instance on the diversity and features of Actinobacteria [16,17], Proteobacteria [18], and Firmicutes [19]. The diversity of macroalgae [20][21][22] and diatoms [23] has also been studied.…”

Unveiling the Diversity of Periphytic Cyanobacteria (Cyanophyceae) from Tropical Mangroves in Penang, Malaysia

“…Studies have also addressed the diversity of macroalgae ( Billah et al . 2016 ; Md Isa et al . 2017 ) and microalgae (specifically diatoms) ( Tan et al .…”

“…In the field of microbiology, studies of the diversity and properties of Actinobacteria (Azman et al 2016(Azman et al , 2017Ser et al 2016Ser et al , 2017Zainal et al 2016;Law et al 2017;Tan et al 2017), Proteobacteria (Moh et al 2017) and Firmicutes (Auta et al 2017) have been conducted. Studies have also addressed the diversity of macroalgae (Billah et al 2016;Md Isa et al 2017) and microalgae (specifically diatoms) (Tan et al 2016;Majewska et al 2017). A limited number of bioprospecting studies of fungi have also been carried out (Seydametova et al 2015).…”