Mangrove estuaries are claimed to be productive and important breeding grounds for fishery resources. The role of particulate organic matter (POM), especially derived from decomposed litter detritus, is well documented in mangrove estuaries. However, being a primary producer, phytoplankton may play significant role, which has not been discussed, governing the productivity Based on relevant published literature, this paper focuses tropical coastal region their interdependency. Analysis...

Assessment of litterfall production is essential to ascertain the status nutrient cycling and forest health. Sarawak, Malaysia, endowed with numerous pristine estuarine mangroves; however, research on primary productivity these forests scanty. Therefore, in a Sibuti mangrove Sarawak was estimated using litter traps for one year (January–December 2013), structure studied through tree census. The dominated by Rhizophora apiculata (relative density [RD] 77.11%), followed Xylocarpus granatum (RD...

This study was carried out to assess the fishery resources of Sibuti River estuary, Sarawak, Malaysia. Data were collected from area for a period one year in different seasons. The estuary is relatively species-rich and total 4675 individuals 32 families 60 species fish (55), crab (four) shrimp (one) collected. Coilia dussumieri dominant (22.63%) followed by Nemapteryx caelata (11.85%), Otolithes ruber (7.85%) Ilisha elongata (5.80%). Marked seasonal variations found among most...

The soaking of wheat seed (Triticum vulgare L.) in water or CaCl 2 solutions followed by air-drying before planting accelerated the germination but did not affect final percentage and subsequent growth seedlings under normal conditions. However, conditions 0.5% NaCl salinity drying seeds stimulated seedlings. In no case were presowing treatments more effective improving root shoot than condition. Under grown from treated had extensive deeper systems untreated seeds. Presowing failed to...

The diversity of edible bivalve was conducted from August 2010 to July 2011 covering eight divisions i.e., Kuching, Sarikei, Sibu, Mukah, Bintulu, Miri, Limbang and Lawas Sarawak, Malaysia. Samples were collected native market fishing village during the study period. All bivalves inhabit either in brackish or marine environment comprised 19 species 10 families namely Meretrix meretrix, M. lyrata, Paphia undulata, Circe scripta, Solen regularies, lamarckii, Pharella acutidens, Amusium...

The composition and diversity of phytoplankton were studied along with physico-chemical parameters water two mangrove-dominated estuaries i.e., Kuala Sibuti (KS) Nyalau (KN), Sarawak, Malaysia. A total 46 species the mean density 147000 cells L-1 recorded from KS estuary 3 Cyanophyceae; 22 Bacillariophyceae; 20 Dinophyceae 1 Chlorophyceae. was 113000 33 19 genera KN estuary, in which 12 Dinophyceae; Cyanophyceae In both estuaries, found to be an order...

The mechanical properties and bio-corrosion behaviours of T4 solid solution heat-treated Mg–1.5Zn Mg–9Zn alloys at 340°C under different heat treatment durations were investigated. In vitro corrosion behaviour the immersed in simulated body fluid (SBF) measured by electrochemical, hydrogen evolution mass loss tests. Surface examination analytical studies carried out using optical scanning electron microscopy, EDX, X-ray diffractometry. results show that grains size both apparently remained...

Abstract. Al-Asif A, Hamli H, Abu Hena MK, Idris MH, Gerusu GJ, Ismail JB, Karim NU. 2020. Benthic macrofaunal assemblage in seagrass-mangrove complex and adjacent ecosystems of Punang-Sari Estuary, Lawas, Sarawak, Malaysia. Biodiversitas 21: 4606-4615. Present study dealt with the on faunal from seagrass bed, mangrove area, non-mangrove (NMS) estuary, Samples were collected June to July 2019 by using quadrates handpicking outside sampling area know real checklist surface macrofauna this...

Abstract. Islam MA, Idris MH, Bhuiyan MKA, Ali MS, Abdullah MT, Kamal AHM. 2022. Floristic diversity, structure, and carbon stock of mangroves in a tropical lagoon ecosystem at Setiu, Malaysia. Biodiversitas 23: 3685-3697. Mangroves habitats play an important role functions. Many studies on mangrove are available coastal habitats, however, the information ecosystems climates is scanty, especially regarding its vegetation storage. This study was carried out to assess status species...

Abstract In this research, the effect of ethanol as gasoline additive has been investigated into metal corrosion a fuel delivery system. Corrosion tests have performed in with different percentages ethanol, using weight loss (immersion test) and electrochemical impedance stereoscopy (EIS) procedures. Surface test specimens were checked by scanning electron microscopy (SEM) after 144 days immersion solution. Also corroded components analyzed energy‐dispersive X‐ray analysis (EDAX) method....

This article describes the development of a partially degradable metal bone pin, proposed to minimize occurrence refracture by avoiding creation holes in after pin removal procedure. The was made friction welding and composed two parts: part that remains nondegradable will be removed as usual. Rods stainless steel 316L (nondegradable) pure iron (degradable) were welded at optimum parameters: forging pressure =33.2 kPa, time = 25 s, burn-off length 15 mm, heat input 4.58 J/s. tensile strength...

Trace metals from industrial effluents discharged into Malaysian mangrove ecosystems, in Sarawak particular, are of growing concern. Concentrations trace (copper, manganese, iron, and zinc) were determined sediment, surface water, pore green red filamentous macroalgae (Chaetomorpha sp. Bostrychia sp., respectively) the rock oyster Saccostrea cucullata three estuarine habitats (Kuala Nyalau, Bakam, Miri), Malaysia. metal concentrations detected sediment these ecosystems (except for Zn...

The abundance and composition of copepod was carried out in the coastal waters Bintulu, Sarawak, Malaysia on March 2005. Samples were collected using conical plankton net with mesh size 153 μm. Copepod identified comprised four orders namely, Calanoida, Cyclopoida, Harpacticoida Poecilostomatoida. A total 49 species belonging to 26 genera identified. Nine most abundant Paracalanus crassirostris, elegans, Temora stylifera, turbinata, Oncaea venusta, Corycaeus andrewsi, subtilis, parvus...

Mangrove macroalgae produce substantial proportion of biomass, which contributes to the coastal ecosystems. Relatively less is known for seasonal variation in occurrence and biomass mangrove associated macroalgae. Consequently, epiphytic on pneumatophores Avicennia marina (Forsk.) Vierh., were sampled from Miri estuary Sarawak during four seasons Malaysia namely southwest monsoon, northeast two inter-monsoons elucidate production Over sample period, 11 species identified 6 genera. Six these...

Zooplankton composition and abundance at two stations located in exposed (station I) protected II) areas of Bakkhali sub-tropical estuary, Cox's Bazar, Bangladesh were investigated monthly from January 2006 to December 2006. Thirty-three zooplankton taxa identified. The major groups encountered Copepoda, Chaetognatha, Mysidaceae, Luciferidae, Amphipoda, Acetes, Hydromedusae, Cladoceran, Decapod fish larvae. percent Copepoda was the highest (79.5-84.8%) among followed by Chaetognatha...