${session.getAttribute("locale")} 5 Distribution and characterisation of phenolic compounds in macaranga pruinosa and associated soils in a tropical peat swamp forest Wed 21 Feb 2018 13:47:39 AEST ]]> The contribution of leaching to nutrient release from leaf litter of two emergent tree species in a Malaysian tropical peat swamp forest nitrogen (N) > C whereby litter P content was quickly exhausted. Microbial activity only affected the bioavailable P (PO4 −) whereby initial litter P release stimulated microbial growth, which resulted in the subsequent immobilization of P. Lastly, the effect of pH was not profound in this study. In conclusion, abiotic leaching from leaf litter releases considerable amounts of nutrients (notably PO4 3−) and functions as an important autochthonous nutrient source for the TPSF. © 2017, Springer International Publishing Switzerland.]]> Wed 21 Feb 2018 13:34:31 AEST ]]> In Situ Tropical Peatland Fire Emission Factors and Their Variability, as Determined by Field Measurements in Peninsula Malaysia 25% of estimated total greenhouse gas emissions from deforestation and degradation. Despite significant global and regional impacts, our understanding of specific gaseous fire emission factors (EFs) from tropical peat burning is limited to a handful of studies. Furthermore, there is substantial variability in EFs between sampled fires and/or studies. For example, methane EFs vary by 91% between studies. Here we present new fire EFs for the tropical peatland ecosystem; the first EFs measured for Malaysian peatlands, and only the second comprehensive study of EFs in this crucial environment. During August 2015 (under El Niño conditions) and July 2016, we embarked on field campaigns to measure gaseous emissions at multiple peatland fires burning on deforested land in Southeast Pahang (2015) and oil palm plantations in North Selangor (2016), Peninsula Malaysia. Gaseous emissions were measured using open-path Fourier transform infrared spectroscopy. The IR spectra were used to retrieve mole fractions of 12 different gases present within the smoke (including carbon dioxide and methane), and these measurements used to calculate EFs. Peat samples were taken at each burn site for physicochemical analysis and to explore possible relationships between specific physicochemical properties and fire EFs. Here we present the first evidence to indicate that substrate bulk density affects methane fire EFs reported here. This novel explanation of interplume, within-biome variability, should be considered by those undertaking greenhouse gas accounting and haze forecasting in this region and is of importance to peatland management, particularly with respect to artificial compaction. ©2018. American Geophysical Union.]]> Wed 17 Apr 2019 12:05:47 AEST ]]> Fine particle emissions from tropical peat fires decrease rapidly with time since ignition Wed 17 Apr 2019 11:55:25 AEST ]]> Simulating food web dynamics along a gradient: Quantifying human influence Wed 14 Feb 2018 13:47:41 AEST ]]> Polyancora globosa gen. sp. nov., an aeroaquatic fungus from Malaysian peat swamp forests Wed 14 Feb 2018 13:33:55 AEST ]]> Structural and functional changes with depth in microbial communities in a tropical malaysian peat swamp forest Wed 14 Feb 2018 13:33:38 AEST ]]> Draft genome sequence of Paenibacillus sp. strain MSt1 with broad antimicrobial activity, isolated from Malaysian tropical peat swamp soil Wed 14 Feb 2018 13:26:38 AEST ]]> The ecology of an aseasonal tropical river on Bougainville Island, Papua New Guinea Wed 13 Nov 2019 16:36:50 AEST ]]> Organic matter processing in tropical streams Wed 13 Nov 2019 16:36:43 AEST ]]> Riparian wetlands of tropical streams Wed 13 Nov 2019 16:29:38 AEST ]]> Co-producing a research agenda for sustainable palm oil Wed 10 Apr 2019 09:59:50 AEST ]]> Comparison of the dietary habits of six species of dinotoperla (Plecoptera: Gripopterygidae) in victoria . bassae, D. brevipennis, D. christinae, D. eucumbene, D. fontana and D. thwaitesi) could be classified as herbivore-detritivores, and in each there was a shift from a diet primarily of fine particulate matter to a more polyphagous habit with increasing nymphal size. The diets of the six species were similar, consisting of diatoms, filamentous green algae (except in D. eucumbene), fupgal hyphae, fine particulate matter and vascular plant tissue. However, differences were observed in the nutritional quality of their diets in terms of protein and calorific content. The two smallest species studied, D. brevipennis and D. eucumbene, consumed mostly fine particulate matter—the least nutritionally valuable of available food items (apart from wood, which was not eaten by Dinotoperla nymphs). D. eucumbene was also the slowest growing of the six species. The fastest-growing species, D. bassae, was also the largest, and the nymphs of this species consumed the highest-quality diet, eating large amounts of filamentous green algae and diatoms. © CSIRO 1986.]]> Wed 09 May 2018 09:30:48 AEST ]]> Trophic relationships and food webs of the benthic invertebrate fauna of two aseasonal tropical streams on Bougainville Island, Papua New Guinea Wed 02 May 2018 10:19:45 AEST ]]> Biodiversity of leaf litter fungi in streams along a latitudinal gradient Tue 29 Jan 2019 15:17:05 AEST ]]> Draft Genome Sequence of Dyella sp. Strain C11, Isolated from a Malaysian Tropical Peat Swamp Forest Tue 24 Jul 2018 08:23:22 AEST ]]> Draft genome sequence of Klebsiella sp. Strain C31 isolated from a Malaysian tropical peat swamp forest Tue 24 Jul 2018 08:16:25 AEST ]]> Draft genome sequence of Paraburkholderia sp. Strain C35, isolated from a Malaysian tropical peat swamp forest Tue 24 Jul 2018 08:16:23 AEST ]]> Riparian buffers mitigate impacts of oil palm plantations on aquatic macroinvertebrate community structure in tropical streams of Borneo Tue 21 Aug 2018 12:59:21 AEST ]]> Litter decomposition is driven by microbes and is more influenced by litter quality than environmental conditions in oil palm streams with different riparian types Tue 20 Nov 2018 15:19:39 AEST ]]> Riparian plant litter quality increases with latitude Tue 20 Feb 2018 09:33:43 AEST ]]> Effect of riparian management on stream morphometry and water quality in oil palm plantations in Borneo Tue 19 Mar 2019 11:28:46 AEST ]]> Benthic invertebrate fauna of an aseasonal tropical mountain stream on Bougainville Island, Papua New Guinea Tue 19 Jun 2018 11:27:49 AEST ]]> Aquatic Macroinvertebrates Tue 18 Dec 2018 11:05:02 AEST ]]> Burkholderia paludis sp. nov., an antibiotic-siderophore producing novel Burkholderia cepacia complex species, isolated from malaysian tropical peat swamp soil 10.0%) were C16:0 (31.7%), C17:0 cyclo (26.6%), and C19:0 cyclo ω8c (16.1%). The polar lipids detected were phosphatidylglycerol, phosphatidylethanolamine, and diphosphatidylglycerol. The predominant ubiquinone was Q-8. This revealed that strain MSh1T belongs to the genus Burkholderia. The type strain MSh1T can be differentiated from other Burkholderia cepacia complex (Bcc) species by phylogenetic analysis of 16S rRNA gene sequence, multilocus sequence analysis (MLSA), average nucleotide identity (ANI) and biochemical tests. DNA-DNA relatedness values between strain MSh1T and closely related type strains were below the 70% threshold value. Based on this polyphasic study of MSh1T, it can be concluded that this strain represents a novel species within the Bcc, for which the name Burkholderia paludis sp. nov. is proposed. The type strain is MSh1T (= DSM 100703T = MCCC 1K01245T). The dichloromethane extract of MSh1T exhibited antimicrobial activity against four Gram positive bacteria (Enterococcus faecalis ATCC 29212, E. faecalis ATCC 700802, Staphylococcus aureus ATCC 29213, S. aureus ATCC 700699) and a Gram negative bacteria (Escherichia coli ATCC 25922). Further purification work has led to the isolation of Compound 1, pyochelin. Pyochelin demonstrated antimicrobial activity against four S. aureus strains and three E. faecalis strains with MIC-values of 3.13 μg/ml and 6.26 μg/ml, respectively. SEM analysis showed that the cellular morphology of E. faecalis ATCC 700802 was not affected by pyochelin; suggesting that it might target the intracellular components. Pyochelin, a siderophore with antimicrobial activity might be useful in treating bacterial infections caused by S. aureus and E. faecalis, however further work has to be done. © 2016 Ong, Aw, Lee, Yule, Cheow and Lee.]]> Tue 13 Feb 2018 12:00:41 AEST ]]> Newly isolated Paenibacillus tyrfis sp. nov., from Malaysian tropical peat swamp soil with broad spectrum antimicrobial activity Tue 13 Feb 2018 11:53:41 AEST ]]> Freshwater biomonitoring with macroinvertebrates in East Asia Tue 13 Feb 2018 11:46:39 AEST ]]> Leaf-litter breakdown in streams of East Malaysia (Borneo) along an altitudinal gradient: Initial nitrogen content of litter limits shredder feeding Tue 13 Feb 2018 11:37:56 AEST ]]> Degradation of tropical malaysian peatlands decreases levels of phenolics in soil and in leaves of macaranga pruinosa Tue 13 Feb 2018 11:32:42 AEST ]]> Urbanization affects food webs and leaf-litter decomposition in a tropical stream in Malaysia Tue 13 Feb 2018 11:25:44 AEST ]]> Leaf-litter breakdown in tropical streams: Is variability the norm? Tue 13 Feb 2018 11:18:38 AEST ]]> Evaluation of antioxidant, antibacterial and anti-tyrosinase activities of four Macaranga species Tue 13 Feb 2018 10:57:39 AEST ]]> Global distribution of a key trophic guild contrasts with common latitudinal diversity patterns Tue 13 Feb 2018 10:43:38 AEST ]]> Loss of biodiversity and ecosystem functioning in Indo-Malayan peat swamp forests Tue 13 Feb 2018 10:02:20 AEST ]]> Aseasonality of benthic invertebrates in a tropical stream on Bougainville Island, Papua New Guinea Tue 13 Feb 2018 10:01:39 AEST ]]> Spatial distribution of the invertebrate fauna of an aseasonal tropical stream on Bougainville Island, Papua New Guinea 13,000 animals/m2) and riffles had the greatest species richness, but equitability was highest in the runs and pools. All but two of 18 species examined showed significant preferences for particular habitats. The distribution of detritus within the stream and, to a lesser extent, the occurrence of spates, as well as flow regime, influenced the abundance of many of the less common taxa.]]> Tue 13 Feb 2018 09:54:54 AEST ]]> Observations on the Eggs of Species of Dinotoperla (Plecoptera: Gripopterygidae) Tue 13 Feb 2018 09:54:38 AEST ]]> Taxonomic Observations on Dinotoperla (Plecoptera: Gripopterygidae) from South-Eastern Australia Tue 13 Feb 2018 09:47:39 AEST ]]> The caddisflies (Trichoptera) from a tropical peat swamp in Selangor, Peninsular Malaysia, including two new species Tue 13 Feb 2018 09:40:38 AEST ]]> Bioactivity of leaves of Macaranga species intropical peat swamp and non-peat swamp environments Tue 10 Jul 2018 13:05:47 AEST ]]> Latitudinal gradient of nestedness and its potential drivers in stream detritivores Tue 04 Sep 2018 16:01:26 AEST ]]> A global experiment suggests climate warming will not accelerate litter decomposition in streams but might reduce carbon sequestration Tue 04 Sep 2018 16:01:26 AEST ]]> Keep wetlands wet: the myth of sustainable development of tropical peatlands – implications for policies and management Tue 04 Sep 2018 15:54:25 AEST ]]> Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates Tue 04 Sep 2018 15:54:25 AEST ]]> Draft genome sequences of two antimicrobial-producing Burkholderia sp. strains, MSh1 and MSh2, isolated from Malaysian tropical peat swamp forest soil Tue 01 May 2018 11:55:46 AEST ]]> Shredders in Malaysia: Abundance and richness are higher in cool upland tropical streams Thu 30 Aug 2018 12:28:29 AEST ]]> Rapid plant responses following relocation of a constructed floating wetland from a construction site into an urban stormwater retention pond Thu 14 Nov 2019 12:47:38 AEST ]]> Microbial community structure in a Malaysian tropical peat swamp forest: the influence of tree species and depth Thu 13 Dec 2018 10:10:12 AEST ]]> Effects of sediment pollution on food webs in a tropical river (Borneo, Indonesia) Thu 10 May 2018 10:28:47 AEST ]]> Antimicrobial producing bacteria isolated from tropical peat swamp soil Thu 04 Oct 2018 11:34:36 AEST ]]> Comparative study of the life cycles of six species of dinotoperla (Plecoptera:Gripopterygidae) in Victoria Thu 03 May 2018 10:00:45 AEST ]]> Environmental Research at Monash University in Malaysia Thu 02 Aug 2018 13:45:21 AEST ]]> A method for estimating larval life spans of aseasonal aquatic insects from streams on Bougainville Island, Papua New Guinea Thu 01 Mar 2018 11:47:02 AEST ]]> First high-quality draft genome sequence of Pasteurella multocida sequence type 128 isolated from infected bone Thu 01 Mar 2018 11:45:04 AEST ]]> Recycling of phenolic compounds in Borneo’s tropical peat swamp forests Mon 19 Feb 2018 12:54:44 AEST ]]> Stream ecosystem integrity is impaired by logging and shifting agriculture in a global megadiversity center (Sarawak, Borneo) Mon 19 Feb 2018 09:59:43 AEST ]]> Biotic and abiotic variables influencing plant litter breakdown in streams: A global study Mon 19 Feb 2018 09:52:39 AEST ]]> Litter quality influences bacterial communities more strongly than changes in riparian buffer quality in oil palm streams Mon 19 Aug 2019 15:19:41 AEST ]]> Global patterns and drivers of ecosystem functioning in rivers and riparian zones Mon 14 Jan 2019 13:02:11 AEST ]]> First in SITU -measurements of tropical peatland fire emissions: new emission factors for greenhouse gas reporting and haze forecasting Mon 11 Feb 2019 13:51:01 AEST ]]> Are secondary forests second-rate? Comparing peatland greenhouse gas emissions, chemical and microbial community properties between primary and secondary forests in Peninsular Malaysia  50% higher than in the primary forest. CH4 emission rates were ca. 2 mg m−2 h−1 in the primary forest but the secondary forest was a CH4 sink, showing no seasonal variations in GHG emissions. Almost all the nutrient concentrations were significantly lower in the secondary forest, postulated to be due to nutrient leaching via drainage and higher rates of decomposition. Cu and Mo concentrations were negatively correlated with CO2 and CH4 emissions respectively. Microbial community structure was overwhelmingly dominated by bacteria in both forest types, however it was highly sensitive to land-use change and season. Gram-positive and Gram-negative relative abundance were positively correlated with CO2 and CH4 emissions respectively. Drainage related disturbances increased CO2 emissions, by reducing the nutrient content including some with known antimicrobial properties (Cu & Na) and by favouring Gram-positive bacteria over Gram-negative bacteria. These results suggest that the biogeochemistry of secondary peat swamp forest is fundamentally different from that of primary peat swamp forest, and these differences have significant functional impacts on their respective environments.]]> Fri 30 Nov 2018 14:36:28 AEST ]]> Leaf litter decomposition in a tropical peat swamp forest in Peninsular Malaysia Fri 27 Apr 2018 15:38:45 AEST ]]> Draft Genome Sequence of Dyella sp. Strain C9, Isolated from a Malaysian Tropical Peat Swamp Forest Fri 21 Dec 2018 11:39:02 AEST ]]> Freshwater Invertebrates of the Malaysian Region Fri 06 Sep 2019 14:55:39 AEST ]]> Denial of long-term issues with agriculture on tropical peatlands will have devastating consequences Fri 06 Sep 2019 13:24:40 AEST ]]> Genome sequencing and annotation of Aeromonas sp. HZM Fri 02 Mar 2018 12:06:40 AEST ]]> Genome sequencing and annotation of Cellulomonas sp. HZM Fri 02 Mar 2018 11:52:41 AEST ]]> Litterfall production and chemistry of Koompassia malaccensis and Shorea uliginosa in a tropical peat swamp forest: plant nutrient regulation and climate relationships Fri 02 Mar 2018 11:45:38 AEST ]]> The ecology of littoral zone Chironomidae in four artificial, urban, tropical Malaysian lakes Fri 01 Feb 2019 15:30:06 AEST ]]>