Diversity and Species Composition of Subaerial Algal Communities in Forested Areas of Meghalaya, India

Kharkongor, Diana; Ramanujam, Papiya

doi:10.1155/2014/456202

Cited by 22 publications

(16 citation statements)

References 19 publications

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“…Desmococcus sp., the most common green algae in the world [11] only presents at Station 3. Results from this study is in agreement with a study in Singapore where the result showed an insignificant result for Desmococcus sp [9]. Table 2 showed the indices for epiphytic terrestrial algae collected from the sampling stations.…”

Section: Species Percentage and Frequencysupporting

confidence: 91%

“…Trebouxia sp. is usually found abundance on pollutant-rich stations [9]. Another species, Trentehpohlia sp.…”

Section: Species Percentage and Frequencymentioning

confidence: 97%

“…Unlike higher plants, mosses and lichens do not have a protective cuticle exposed to sulfur dioxide which is the major reason for their extreme sensitivity to pollutant [3]. Short duration exposure of ISBN -978-93-86878-33-5 21st PATTAYA International Conference on Agricultural, Environmental and Biological Sciences (PAEBS-19) Pattaya (Thailand) Dec. [9][10]2019 high concentrations of SO 2 produce acute injury in plants while long-term exposure of low concentrations caused chronic injury [4]. SO 2 can also modify the response of plants to other environmental stresses, both biotic and abiotic [5].…”

Section: Introductionmentioning

confidence: 99%

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Diversity and Species Composition of Epiphytic Terrestrial Algae Exposed to Sulphur Dioxide Emissions Released From Power Plant Station

2019

LHBSS-19, PAEBS-19, PAET-19 Dec. 9-10, 2019 Pattaya (Thailand)

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The availability of pollutants serve as either the nutrient source or a precursor to inhibit some algal species, depending on the types of pollutants. This is the reason why epiphytic terrestrial algae (ETA) is suitable to be used as bio-indicator for air pollution. The objective of this study is to determine species diversity of terrestrial algae near power station with regards of its distance from pollutant source (SO 2 ). Terrestrial algae on tree barks were collected near a power plant station at 200 m to 500 m from the pollutant source. Tree barks were randomly chosen and 30 quadrats of 15 x 15 cm were used. A total of 12 species from 6 families and 9 genera has been identified. Simpson's Diversity Index 1-D (0.841) shows that the species of terrestrial algae distributed were relatively high. Station 1 which is located approximately 200 m (closest to the pollutant source from the power plant), recorded the greatest species diversity. The Shannon Index (H') value is alsothe highest in Station 1 (1.802) and the lowest value was recorded for Station 2 (1.569). The number of species found in Station 1 is seven with Trentepohlia abietina as the dominant species. Station 2 and Station 3 each recorded six and seven species respectively with Trebouxia sp. as the most diverse species while Station 4 recorded a total of six species with Printzina lagenifera as the dominant species. Trentepohliaceae was found to be the dominant family (40%) and Trebouxia sp. is regarded as the dominant species which represent approximately 27.59% of all individuals sampled. From this study, it was found that algal diversity within the study area was not significantly affected by exposure to SO2 released from power plant. However, few common algal species such as Apatococcus sp., Chlorococcum sp., Desmococcus sp. and Trentepohlia rigidula was not recorded at the station nearest to the power plant which was Station 1.

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Section: Species Percentage and Frequencysupporting

confidence: 91%

“…Trebouxia sp. is usually found abundance on pollutant-rich stations [9]. Another species, Trentehpohlia sp.…”

Section: Species Percentage and Frequencymentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Diversity and Species Composition of Epiphytic Terrestrial Algae Exposed to Sulphur Dioxide Emissions Released From Power Plant Station

2019

LHBSS-19, PAEBS-19, PAET-19 Dec. 9-10, 2019 Pattaya (Thailand)

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“…The level of diversity of Trentepohlia species in this study is similar to that in previous studies by Allali (2011) and Allali et al (2013) in Les Monts de Cristal National Park, Gabon, at an altitude of 100 to 800 m a.s.l., where 11 species were found. Kharkongor and Ramanujam (2014) studied areas of mixed plantation and open disturbed forest in Meghalaya, India, at an altitude of 958 to 1,710 m a.s.l., and found 11 species, and Neustupa and Škaloud (2008) studied the diversity of subaerial algae and cyanobacteria on tree bark in tropical mountain habitats in a Southeast Asian mountain rainforest in the Cibodas Biosphere Reserve, West Java, Indonesia.…”

Section: Diversity Of Algae and The Influence Of Environmental Factorsmentioning

confidence: 99%

Environmental Factors Affecting the Diversity and Photosynthetic Pigments of Trentepohlia Species in Northern Thailand’s Chiang Dao Wildlife Sanctuary

et al. 2020

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This study addressed the environmental factors that affect Trentepohlia spp. in the Chiang Dao Wildlife Sanctuary at altitudes of 399 to 1,503 meters above sea level (m a.s.l.) during the rainy, winter, and summer seasons. Species were identified using characteristic morphological identification. The influence of environmental factors on the algae was analyzed using a statistical program, and seasonal changes in the quantity of photosynthetic pigments in the dominant species were evaluated. The average relative humidity was 69.34 ± 12.90%, the average temperature was 26.23 ± 3.79 °C, and the average light intensity was 139.78 ± 42.21 µmol photon m−2 s−1. Thirteen species were found: Trentepohlia chapmanii, Trentepohlia sp. 1, Trentepohlia sp. 2, Trentepohlia sundarbanensis, Trentepohlia sp. 3, Trentepohlia rigidula, Trentepohlia sp. 4, Trentepohlia effusa, Trentepohlia monilia, Trentepohlia abietina, Trentepohlia sp. 5, Trentepohlia aurea, and Trentepohlia umbrina. The largest number of species (seven to nine) were found at lower altitudes, from 473 to 517 m a.s.l. Species diversity was greatest in the winter season (13 species). Species found at low attitude were grouped together (Group 1) and had the greatest diversity, and the remaining species were divided into Groups 2, 3, and 4. Environmental factors had both positive and negative influences on the species, especially T. chapmanii, which was found below 1,003 m a.s.l., and T. monilia, which was found in areas with a high relative humidity of 74.50% to 83.93%. The ratio of the total carotenoids to chlorophyll of T. rigidula, the dominant species, was relatively high at 4.96:1, and the β-carotene content (46.89 %w/w) was highest during winter.

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“…A total number of 10 species had been reported [32], of which four species were dominant. Presence of high quantity of carotenoids was also documented from these four species of Trentepohlia [33].…”

Section: Introductionmentioning

confidence: 99%

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2017

IJCAM

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The evaluation of antioxidant activities of four Trentepohlia species (i.e. T. abietina, T. arborum, T. diffracta and T. umbrina) in vitro revealed a remarkable result where all four studied species were found to be rich in phenolic compounds. Comparatively T. abietina extract contained the highest amount of total phenolic compound and flavonoids content as well, and it exhibited the maximum scavenging activity with the lowest IC 50 . The scavenging activity of the four Trentepohlia species extracts was observed to decrease in the following order T. abietina >T. arborum>T. diffracta>T. umbrina. Moreover, both DPPH radical scavenging activity and superoxide anion radi¬cal scavenging activity varied significantly between the four species. In case of reducing power, extracts of all four species were concentration dependent where high reducing power was observed at higher concentration and gradually decreased with decrease in concentration of the extracts. Comparing amongst the species, T. abietina again showed highest reducing power at all the concentrations. The result of correlation showed a positive increase in scavenging activities with increase in flavonoids content. This clearly indicated that in this case, the scavenging effect exhibited by the extract of all four species of Trentepohlia mainly the DPPH scavenging activity could be attributed to the presence of mainly flavonoids constituent. photosynthesis, especially singlet oxygen. Several studies have demonstrated that carotenoids contribute significantly to the total antioxidant capacity of microalgae [22,23]. Microalgae such a Haematococcus and Dunaliella are already commercially utilised for production of carotenoids as source of antioxidants, for use as additives in food and feed applications, as well as for use in cosmetics and as food supplements [24,25]. Keywords:Trentepohlia a genus of subaerial algae is widespread in nature and found growing on different substrata. This genus is easily recognisable because of their bright orange-red and yellow coloured patches due to accumulation of carotenoids in the filaments. Although Trentepohlia is the most reported genus on subaerial habitat their studies is mostly concentrated on taxonomy and diversity. Presence of various arytenoids in some species of Trentepohlia was documented by various workers [26][27][28][29][30]. However little work had been carried out to analyse the other secondary metabolites and antioxidants compounds such as phenolics and to examine the biological activities of these carotenoids rich subaerial genera. So far only Simic et al. [31] had demonstrated the antioxidant and antimicrobial activities of the extract of Trentepohlia umbrina and also suggested the microalga as a good source of natural antioxidants.Trentepohlia is a dominant genus of subaerial algae found growing on different substrata in Shillong, Meghalaya. A total number of 10 species had been reported [32], of which four species were dominant. Presence of high quantity of carotenoids was also documented from t...

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Diversity and Species Composition of Subaerial Algal Communities in Forested Areas of Meghalaya, India

Cited by 22 publications

References 19 publications

Diversity and Species Composition of Epiphytic Terrestrial Algae Exposed to Sulphur Dioxide Emissions Released From Power Plant Station

Diversity and Species Composition of Epiphytic Terrestrial Algae Exposed to Sulphur Dioxide Emissions Released From Power Plant Station

Environmental Factors Affecting the Diversity and Photosynthetic Pigments of Trentepohlia Species in Northern Thailand’s Chiang Dao Wildlife Sanctuary

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