An Overview of Vertebrate Faunal Diversity in Sri Lankan Mangroves

Fernando, Eresha; Wickramasinghe, Deepthi; Fernando, Vindhya Kulasena

doi:10.2112/jcoastres-d-21-00041.1

Cited by 12 publications

(28 citation statements)

References 22 publications

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“…Sri Lankan mangrove systems are interspersed along the coastline of the country. Although the richness of Sri Lankan mangrove forests concerning the floral and faunal diversity has been acknowledged widely ( Pinto and Punchihewa 1996 ; Amarasinghe and Perera 2017 ; Fernando et al 2022 ), the microbial potentials of these unique ecosystems remain elusive. Moreover, mangrove forests are known to harbor diversified actinomycete populations ( Baskaran et al 2011 ; Zainal Abidin et al 2016 ).…”

Section: Discussionmentioning

confidence: 99%

“…Sri Lankan mangrove systems are interspersed along the coastline of the country and are estimated to cover an area of more than 15,000 ha ( Edirisinghe et al 2012 ; Arulnayagam et al 2021 ). Although Sri Lankan mangroves have been extensively studied for their faunal and floral diversity ( IUCN 2010 ; Amarasinghe and Perera 2017 ; Arulnayagam et al 2021 ; Fernando et al 2022 ), mangrove sediment microbiology is a relatively new field in Sri Lanka and a largely untapped area for the isolation of new microorganisms that can produce new active secondary metabolites. In the present study, six cultivable actinomycetes isolated from Kadolkele mangrove sediments associated with the Negombo lagoon, Sri Lanka, have been characterized using their phenotypic and genotypic characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Bioactive Actinomycetes Isolated from Kadolkele Mangrove Sediments, Sri Lanka

Naligama

Weerasinghe

Halmillawewa

2022

Polish Journal of Microbiology

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Exploring untapped microbial potentials in previously uncharted environments has become crucial in discovering novel secondary metabolites and enzymes for biotechnological applications. Among prokaryotes, actinomycetes are well recognized for producing a vast range of secondary metabolites and extracellular enzymes. In the present study, we have used surface sediments from ‘Kadolkele’ mangrove ecosystem located in the Negombo lagoon area, Sri Lanka, to isolate actinomycetes with bioactive potentials. A total of six actinomycetes were isolated on modified-starch casein agar and characterized. The isolates were evaluated for their antibacterial activity against four selected bacterial strains and to produce extracellular enzymes: cellulase, amylase, protease, and lipase. Three out of the six isolates exhibited antibacterial activity against Staphylococcus aureus, Escherichia coli, and Bacillus cereus, but not against Listeria monocytogenes. Five strains could produce extracellular cellulase, while all six isolates exhibited amylase activity. Only three of the six isolates were positive for protease and lipase assays separately. Ac-1, Ac-2, and Ac-9, identified as Streptomyces spp. with the 16S rRNA gene sequencing, were used for pigment extraction using four different solvents. Acetone-extracted crude pigments of Ac-1 and Ac-2 were further used in well-diffusion assays, and growth inhibition of test bacteria was observed only with the crude pigment extract of Ac-2. Further, six different commercially available fabrics were dyed with crude pigments of Ac-1. The dyed fabrics retained the yellow color after acid, alkaline, and cold-water treatments suggesting the potential of the Ac-1 pigment to be used in biotechnological applications.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of Bioactive Actinomycetes Isolated from Kadolkele Mangrove Sediments, Sri Lanka

Naligama

Weerasinghe

Halmillawewa

2022

Polish Journal of Microbiology

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“…Literature review 2.1 Need of improving the competencies of construction labourers Labour is a significant resource in construction projects as it combines all other resources such as money, materials and equipment. Fernando et al (2016) state that the construction industry is a labour-intensive industry that carries heavy reliance upon labour skills. Olabosipo et al (2011) define labour as "a task that requires the exertion of body and mind or both".…”

Section: Constructionmentioning

confidence: 99%

“…Past studies reveal that the competencies of construction supervisors significantly affect the performance and productivity of construction operations in many countries (Nourhane et al, 2018;Onyekachi, 2018). Studies highlight the need for improving the competencies of construction supervisors in various categories in many countries, including Australia (Rami and David, 2014), Egypt (Nourhane et al, 2018), India (Murari and Joshi, 2019), Indonesia (Adi and Ni'am, 2012), Kuwait (Jarkas and Bitar, 2012), New Zealand (Durdyev and Mbachu, 2011), Nigeria (Onyekachi, 2018) and Sri Lanka (Fernando et al, 2016;Manoharan et al, 2020Manoharan et al, , 2021b.…”

Section: Need Of Improving the Competencies Of Construction Superviso...mentioning

confidence: 99%

“…It is one of the crucial aspects of construction productivity that requires proper attention to the effective delivery of construction projects. Poor competencies of construction industry practitioners have been a major challenge against the productivity improvement and technological advancement for the construction industry in many developing CI 23,4 countries, including Sri Lanka (Fernando et al, 2016;Nourhane et al, 2018;Silva et al, 2018;Hai and Tam, 2019). These cause cost overruns, time overruns and qualityrelated problems in construction projects (Kazaz et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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A guiding model for developing construction training programmes focusing on productivity and performance improvement for different qualification levels

Manoharan

Dissanayake

Pathirana

et al. 2022

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Purpose The effectiveness of the construction industry highly depends on the quality of the work practices, education and training. Based on the industry’s need to strengthen the productivity and performance improvement scopes in the construction education/training practices, this study aims to develop a guiding tool for designing new training programmes in different qualification levels considering the industry’s near-future challenges. Design/methodology/approach The study methodology encompassed literature reviews, experts’ discussions/reviews and problem-based communication approaches with qualitative methods to obtain a set of expected competency outcomes (COs) for each qualification level. The necessary mapping frameworks were used to display the cross section of each CO. Findings The study has presented a guiding model comprising three categories of qualification levels, where each consists of 12 COs with the mapping outcomes against learning domains of a conceptual framework. The guiding model also displays the detailed steps to develop detailed curriculums for different qualification levels of training. Research limitations/implications Though the scope of the study was limited to the Sri Lankan context, the findings can be beneficial to many other countries in similar scenarios. Practical implications Overall study outcomes are expected to make an impact on the industry’s reskilling and upskilling practices resulting in a considerable level of improvement in the quality and productivity of work operations. Originality/value The experts’ reviews highlight the developed model as a valuable tool that provides a platform for upgrading the construction education and training practices based on the industry’s near-future circumstances in productivity and performance improvement practices, also revealing its future influences in training accreditation processes.

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Current status of mangrove vegetation in Batticaloa Lagoon, Sri Lanka, using high-resolution satellite imagery

Veettil

2022

J Coast Conserv

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An Overview of Vertebrate Faunal Diversity in Sri Lankan Mangroves

Cited by 12 publications

References 22 publications

Characterization of Bioactive Actinomycetes Isolated from Kadolkele Mangrove Sediments, Sri Lanka

Characterization of Bioactive Actinomycetes Isolated from Kadolkele Mangrove Sediments, Sri Lanka

A guiding model for developing construction training programmes focusing on productivity and performance improvement for different qualification levels

Current status of mangrove vegetation in Batticaloa Lagoon, Sri Lanka, using high-resolution satellite imagery

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