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Improvement of tannase production under submerged fermentation by Aspergillus niger FBT1 isolated from a mangrove forest

100%

George D. S., Ong C.-B.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 4

Aspergillus niger FBT1, a local extracellular strain for tannase production, was isolated from soil collected from Matang Mangrove Forest Reserve in Perak, Malaysia. This fungus strain was cultivated in an Erlenmeyer flask under a submerged fermentation system. Medium compositions play a very important role in enhancing enzyme production during fermentation. The production of tannase by A. niger FBT1 increased significantly (95%) when the medium compositions and various process parameters were optimized. Incubation for 72 hours (30EC, pH 7) in medium complemented with sodium nitrate was found optimal. Additional supplementation with tannic acid (2% w/v) as the sole carbon source strongly increased the yield of the enzyme.

2

Spatiotemporal pattern of degradation in arid mangrove forests of the Northern Persian Gulf

86%

Etemadi H., Smoak J. M., Abbasi E.

Oceanologia

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2021

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tom 63

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nr 1

3

Preliminary study on the benthic macrofauna associated with different microhabitats in mangrove forest of the Bonny estuary, Niger Delta, Nigeria

86%

Hart A. I., Chindah A. C.

Acta Hydrobiologica

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1998

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tom 40

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nr 1

4

Damage to mangrove forest by 2004 tsunami at Pakarang Cape and Namkem, Thailand

72%

Yanagisawa H., Koshimura S., Goto K., Miyagi T., Imamura F., Ruangrassamee A., Tanavud C.

Polish Journal of Environmental Studies

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2009

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tom 18

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nr 1

35-42

We investigated damage to mangroves from the 2004 Indian Ocean tsunami at Pakarang Cape and Namkem, Thailand. Visual inspection of remotely sensed images revealed that 12 and 20 ha of mangrove forests were damaged, respectively, at Pakarang Cape and Namkem. Field surveys revealed that mangrove trees were destroyed particularly around the river mouths and channels. Numerical simulation indicated that the flow concentrated at the river mouth and inundated mangrove forests through river channels. We concluded that the tsunami flow pattern was largely affected by local river mouth and channel topography. Damage to mangroves might be severe in such areas.

5

Impact of Nypa palm (Nypa fruticans Wurmb) and mangroves forest on benthic Macro invertebrate community in Andoni River, Nigeria

72%

Emoyoma U. O., Numbere A. O., Woke G. N.

International Letters of Natural Sciences

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2020

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tom 77

It is postulated that the presence of nypa palm (Nypa palm) in mangrove forest affect the reproductive function of fish by inhibiting the growth of macro invertebrates. The impact of Nypa fruticans (Wurmb) and mangroves on the benthic macro invertebrate community of Andoni River was carried out between January and August, 2017. A total of four stations were chosen based on nypa palm and native mangrove species’ presence and absence, station 1 (Open water), Station 2 (Nypa palm dominance), station 3 (Rhizophora and Avicennia dominance), Station 4 (Mixed). Results of water quality parameters include; pH 6.99±0.16, Temperature 28.20±0.05°C, DO 4.71±0.18mg/L, Conductivity 19.52±0.20µm/s, Salinity 10.76±0.07ppt, TDS 13.45±0.27ppt. Mean values of the physico-chemical parameters (P > 0.05) were not significantly different. Twelve taxa of benthic macro-invertebrates in eleven families were collected. The crustaceans were more in diversity (38.46%), while bivalvia, pisces and oligochaete had the least percentage composition (7.69%). The gastropods were more in species dominance (44.69%), while the Oligochaeta were least in abundance (0.61%). Shannon Weiner’s index across the stations for benthos was highest in station 2 (1.840) and lowest in station 1 (1.103). Simpson’s index was highest in station 2 (1.990) and lowest in station 1 (1.938). Pielou’s index of evenness was highest in station 2 (0.767) and lowest in station 1 (0.616). All the macro-invertebrates recorded were clean water and pollution tolerant species, and showed no significant difference across stations (P>0.05). In conclusion this study indicates that nypa palm does not affect the proliferation of macro invertebrates, which supports fishery population along the food chain.

6

Mangroves in India: a unique Marine Ecosystem

72%

Arunprasath A., Gomathinayagam M.

International Letters of Natural Sciences

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2015

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tom 42

India has a long tradition of mangrove forest management. The Sundarbans mangroves, located in the Bay of Bengal (partly in India and partly in Bangladesh), were the first mangroves in the world to be put under scientific management. The area's first management plan was implemented in 1892. Recognizing the importance of mangroves, the Government of India set up the National Mangrove Committee in the Ministry of Environment and Forests in 1976 to advise the government about mangrove conservation and development. In its first meeting, the panel, which consists of scientists, research scholars and experts on the mangrove ecosystem, emphasized the need to conduct a survey of the extent of existing mangrove areas within the country.

7

Experiments on wave motion and suspended sediment concentration at Nang Hai, Can Gio mangrove forest, Southern Vietnam

72%

Hong Phuoc V. L., Massel S. R.

Oceanologia

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2006

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tom 48

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nr 1

Biogeochemical and trophodynamic processes as well as hydrodynamic factors play a major role in the structure and function of mangrove ecosystems. This study outlines field experiments on wave motion and suspended sediment concentration carried out at Nang Hai, Can Gio mangrove forest, Southern Vietnam. Pressure sensors were used to measure sea surface elevation, and Optical Backscatter Sensors (OBS) were applied to detect infrared (IR) radiation scattered from suspended particles in order to measure turbidity and suspended sediment concentrations. The experimental results indicate that most of the energy is dissipated inside the mangrove forest as a result of wave-trunk interactions and wave breaking. The suspended sediment concentration depends on wave intensity and tidal current velocity. Wave action is one of the main factors forcing sediment transport and coastal erosion at the study site; even the wave field at the study site is not so strong. The establishment of mangrove vegetation can encourage the deposition of sediment, or at least the retention of the flood-tide sediment influx.

8

Effect of mangrove forest structures on wave attenuation in coastal Vietnam

58%

Bao T. Q.

Oceanologia

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2011

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tom 53

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nr 3

This paper analyses wave attenuation in coastal mangrove forests in Vietnam. Data from 32 mangrove plots of six species located in 2 coastal regions are used for this study. In each plot, mangrove forest structures and wave height at different cross-shore distances are measured. Wave height closely relates to cross- shore distances. 92 exponential regression equations are highly significant with R2 >0.95 and P val. <0.001. Wave height reduction depends on initial wave height, cross-shore distances, and mangrove forest structures. This relationship is used to define minimum mangrove band width for coastal protection from waves in Vietnam.

9

Post-tsunami recovery of shallow water biota and habitats on Thailand's Andaman coast

58%

Kendall M. A., Aryuthaka C., Chimonides J., Daungnamon D., Hills J., Jittanoon C., Komwachirapitak P., Kongkaew V., Mittermeyr A., Monthum Y., Nimsantijaroen S., Paterson G. L. J., Foster-Smith R., Foster-Smith J., Thongsin N.

Polish Journal of Environmental Studies

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2009

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tom 18

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nr 1

69-75

There have been very few quantitative studies of the intertidal and shallow water biota of the Andaman Coast of Thailand and thus it was very difficult to provide precise estimates of the impact of the tsunami on coastal resources. Some quantitative data from Laem Son National Park existed, having been collected by the present authors, and these indicated that the most severe impacts were on the intertidal sand beach fauna, on rocky shore assemblages and on the seaward edge of mangrove forests. Inside the forests there was heavy deposition of coarse sediment on the forest floor and this led to changes in the species composition of the infauna. Most, but not all, sea grass beds escaped serious damage. By 2008 intertidal sediment assemblages contained a similar number of individuals to that recorded before the tsunami. Pre-tsunami data indicate that open coast, estuarine and seagrasses assemblages are naturally highly variable and thus were well adapted to recovering from the tsunami disturbance. Offshore sediments lack pre-tsunami information, but they too appear to be normal. Size frequency analysis of a population of the heart urchin Brissopsis luzonicus indicate that some individuals survived the tsunami but that there is heavy domination by the first post-tsunami cohort suggesting heavy colonization of disturbed seafloor. The trees in the seaward fringe of the most exposed mangrove forests still have to recover from tsunami damage, although the benthic fauna within the forest has returned.

Ograniczanie wyników

Improvement of tannase production under submerged fermentation by Aspergillus niger FBT1 isolated from a mangrove forest

Spatiotemporal pattern of degradation in arid mangrove forests of the Northern Persian Gulf

Preliminary study on the benthic macrofauna associated with different microhabitats in mangrove forest of the Bonny estuary, Niger Delta, Nigeria

Damage to mangrove forest by 2004 tsunami at Pakarang Cape and Namkem, Thailand

Impact of Nypa palm (Nypa fruticans Wurmb) and mangroves forest on benthic Macro invertebrate community in Andoni River, Nigeria

Mangroves in India: a unique Marine Ecosystem

Experiments on wave motion and suspended sediment concentration at Nang Hai, Can Gio mangrove forest, Southern Vietnam

Effect of mangrove forest structures on wave attenuation in coastal Vietnam

Post-tsunami recovery of shallow water biota and habitats on Thailand's Andaman coast