Ecological biogeography of mangroves in Sri Lanka

Amarasinghe, M. D.; Perera, K.A.R.S.

doi:10.4038/cjs.v46i5.7459

Cited by 20 publications

(15 citation statements)

References 9 publications

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“…Total estimated brackishwater area of Sri Lanka is about 15800 ha (Karunathilake, 2003) and it hosts several ecosystems including mangroves that extend over an area of 15670 ha, interspersed along the coastline (Edirisinghe et al, 2012). Mangrove vegetation in Sri Lanka comprises twenty-three (23) true mangrove species and thirty-four mangrove associated plant species (Amarasinghe & Perera, 2017).…”

Section: Introductionmentioning

confidence: 99%

Ecosystem Carbon Stock of Mangroves at the Batticaloa Lagoon, Sri Lanka

Perera

Amarasinghe

2018

OUSL Jnl

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Mangroves play an important role in sequestering organic carbon in tropical and subtropical coastal areas, accounting up to 15% of the total carbon deposited in coastal sediments. Sequestered organic carbon occurs both in standing plant biomass, as well as in the below ground root biomass and mangrove soils. Unavailability of quantitative data on carbon retention capacity of Sri Lankan mangrove ecosystems compelled the authors to carry out the present study with the objective of estimating the total ecosystem carbon content in mangrove eco systems in the Batticaloa lagoon, Sri Lanka. This is the largest lagoon situated on the east coast and the third largest brackish water system in the country. Data on vegetation

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Section: Introductionmentioning

confidence: 99%

Ecosystem Carbon Stock of Mangroves at the Batticaloa Lagoon, Sri Lanka

Perera

Amarasinghe

2018

OUSL Jnl

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“…Sri Lanka is one of the most biodiverse regions of South Asia consisting of an outstanding and unique diversity of both fauna and flora. The present day vegetation of Sri Lanka, is largely determined by the monsoon climate, topography, lithology and various anthropogenic factors such as human settlement, forest clearance, and agriculture (Perera 1975;Amarasinghe and Perera 2017). A multitude of ecosystems including lowland rain forests, tropical moist evergreen forests, tropical thorn forests, tropical montane and sub-montane forests and grasslands are found within different climatic and topographic zones of the island.…”

Section: International Society For Tropical Ecologymentioning

confidence: 99%

Species richness patterns, hotspots and phytogeographic affinities of thalloid liverworts (Marchantiophyta) and hornworts (Anthocerotophyta) of Sri Lanka

Ruklani

Rubasinghe

2021

Trop Ecol

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Sri Lanka is a tropical island and lies in the Indian Ocean, near the southwestern tip of India sharing the same continental shelf. The island has a highly varied climate and topography, spanning from coastal region and lowlands with a tropical climate to central highlands with a cool temperate climate. Sri Lanka harbours a rich diversity of bryophytes. The aim of this study was to trace the species richness patterns and phytogeographic affinites of Sri Lankan thalloid liverworts and hornworts. The analysis is based on comprehensive field excursions carried out throughout the island covering all possible geographic localities. Distribution patterns were deduced for each taxon reported and phytogeographic affinities were traced on the basis of its present worldwide distribution. Their distribution patterns were compared with the floristic regions recognized for flowering plants of Sri Lanka. A variation in the species diversity and pattern of aggregation of species in different climatic and topographic zones was observed. Central Highlands in the wet and intermediate zones, represented the center of diversity of almost all reported taxa. Thalloid liverworts and hornworts are distributed in all floristic regions recognized for angiosperms, except in the coastal, marine and dry zone floristic regions. Zones of highest taxonomic diversity or "hotspots", have been inferred for taxa encountered in the island. Seventy five percent of all thalloid liverworts and hornworts reported from Sri Lanka are shared with the Western Ghats of India and 90% of taxa are shared with mainland India.

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“…Mangrove species respond to various tidal regimes, where they occupy a convenient space on the mangrove forest, which forms a distinct zone of unique species. Yet the low tidal amplitude in the seas around Sri Lanka and the coastal geomorphology restricts the inter-tidal zone into narrow strips (Amarasinghe & Perera, 2017). Generally, A. marina could survive very high salinities yet are more common around the Sri Lankan mangrove forests, especially in the dry zones.…”

Section: Zonation Patternmentioning

confidence: 99%

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

Arulnayagam

2020

IJSEI

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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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Ecological biogeography of mangroves in Sri Lanka

Cited by 20 publications

References 9 publications

Ecosystem Carbon Stock of Mangroves at the Batticaloa Lagoon, Sri Lanka

Ecosystem Carbon Stock of Mangroves at the Batticaloa Lagoon, Sri Lanka

Species richness patterns, hotspots and phytogeographic affinities of thalloid liverworts (Marchantiophyta) and hornworts (Anthocerotophyta) of Sri Lanka

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

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