Floral Distribution, Diversity, and Ecology of Mangrove Forests in Mandaitivu and Arali, Sri Lanka

Mangroves in the northern parts of Sri Lanka has been understudied and often ignored by the ecologists due to several reasons. This paper contributes to the assessment of floristic diversity and community structure of mangrove forests in two sites in the Northern Province; Mandaitivu and Arali. Vege...

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Main Author: Ahalya Arulnayagam
Format: Article
Language:English
Published: CV. Literasi Indonesia 2020-12-01
Series:Indonesian Journal of Social and Environmental Issues
Subjects:
Online Access:https://ojs.literacyinstitute.org/index.php/ijsei/article/view/75
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author Ahalya Arulnayagam
author_facet Ahalya Arulnayagam
author_sort Ahalya Arulnayagam
collection DOAJ
description Mangroves in the northern parts of Sri Lanka has been understudied and often ignored by the ecologists due to several reasons. This paper contributes to the assessment of floristic diversity and community structure of mangrove forests in two sites in the Northern Province; Mandaitivu and Arali. Vegetation studies were undertaken with the use of 10m wide belt transect laid across the water-land gradient, within which, 5-7 quadrats were placed for floral identification (nMandaitivu = 67, nArali = 44). Subsurface water samples (n=57) from adjacent estuarine region were taken to assess environmental parameters. Ten true mangrove species of six families were identified altogether in both sites. Bruguiera cylindrica, Lumnitzera racemosa, Excoecaria agallocha and Avicennia marina showed higher niche width. Zonation exhibited Rhizophora in the fringing zone, Avicennia landward and the others in the mixed zone. Salinity in both areas were relatively high and showed a significantly positive correlation with mangrove abundance along with conductivity, tidal regime and pH. Despite of their important role in coastal dynamics, mangroves have been degraded due to anthropogenic activities, thus demanding actions for conservation in the future.
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spelling doaj.art-84c06bd2cd2244119382b26415c9016c2022-12-21T18:23:48ZengCV. Literasi IndonesiaIndonesian Journal of Social and Environmental Issues2722-13692020-12-011315116010.47540/ijsei.v1i3.7576Floral Distribution, Diversity, and Ecology of Mangrove Forests in Mandaitivu and Arali, Sri LankaAhalya Arulnayagam0College of Ocean Science and Technology Korea Maritime and Ocean University, Busan, Republic of KoreaMangroves in the northern parts of Sri Lanka has been understudied and often ignored by the ecologists due to several reasons. This paper contributes to the assessment of floristic diversity and community structure of mangrove forests in two sites in the Northern Province; Mandaitivu and Arali. Vegetation studies were undertaken with the use of 10m wide belt transect laid across the water-land gradient, within which, 5-7 quadrats were placed for floral identification (nMandaitivu = 67, nArali = 44). Subsurface water samples (n=57) from adjacent estuarine region were taken to assess environmental parameters. Ten true mangrove species of six families were identified altogether in both sites. Bruguiera cylindrica, Lumnitzera racemosa, Excoecaria agallocha and Avicennia marina showed higher niche width. Zonation exhibited Rhizophora in the fringing zone, Avicennia landward and the others in the mixed zone. Salinity in both areas were relatively high and showed a significantly positive correlation with mangrove abundance along with conductivity, tidal regime and pH. Despite of their important role in coastal dynamics, mangroves have been degraded due to anthropogenic activities, thus demanding actions for conservation in the future.https://ojs.literacyinstitute.org/index.php/ijsei/article/view/75conservationdistributiondiversitymangrovesmangroves, diversity, sri lanka, distribution, conservation
spellingShingle Ahalya Arulnayagam
Floral Distribution, Diversity, and Ecology of Mangrove Forests in Mandaitivu and Arali, Sri Lanka
Indonesian Journal of Social and Environmental Issues
conservation
distribution
diversity
mangroves
mangroves, diversity, sri lanka, distribution, conservation
title Floral Distribution, Diversity, and Ecology of Mangrove Forests in Mandaitivu and Arali, Sri Lanka
title_full Floral Distribution, Diversity, and Ecology of Mangrove Forests in Mandaitivu and Arali, Sri Lanka
title_fullStr Floral Distribution, Diversity, and Ecology of Mangrove Forests in Mandaitivu and Arali, Sri Lanka
title_full_unstemmed Floral Distribution, Diversity, and Ecology of Mangrove Forests in Mandaitivu and Arali, Sri Lanka
title_short Floral Distribution, Diversity, and Ecology of Mangrove Forests in Mandaitivu and Arali, Sri Lanka
title_sort floral distribution diversity and ecology of mangrove forests in mandaitivu and arali sri lanka
topic conservation
distribution
diversity
mangroves
mangroves, diversity, sri lanka, distribution, conservation
url https://ojs.literacyinstitute.org/index.php/ijsei/article/view/75
work_keys_str_mv AT ahalyaarulnayagam floraldistributiondiversityandecologyofmangroveforestsinmandaitivuandaralisrilanka