Mangroves of Sri Lanka: Distribution, status and conservation requirements

Priyashantha, A. K. H.; Taufikurahman, T.

doi:10.22271/tpr.2020.v7.i3.083

Cited by 10 publications

(3 citation statements)

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“…Secondly, as projected by Di Nitto et al (2013), there was natural regeneration of mangroves occurring at some abandoned shrimp farms. Thirdly, in 2015, the Sri Lanka government pledged to protect all of its mangroves, making it the first country in the world to do so (Priyashantha & Taufikurahman, 2020;Dahdouh-Guebas et al, 2021). In this study, the current (as of 2020) surface area ratio of 'shrimp farm: surface water' is 1: 1.5, and that of 'shrimp farm: mangrove vegetation' is 1: 1.3 for the study area (Table 4).…”

Section: Ecological Footprint Of Shrimp Farmingmentioning

confidence: 70%

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What is the ecological footprint of aquaculture after 5 decades of competition between mangrove conservation and shrimp farm development?

Ofori

Kodikara

Jayatissa

et al. 2022

Aquatic Conservation

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1. Among the several threats to the conservation of mangrove ecosystems in most South Asian countries, shrimp farming is predominant. Since the introduction of shrimp farming in Sri Lanka in the 1980s, mangroves on the island's north-western coast have been continually cleared to create new shrimp farms, leading to a decline in the social-ecological services provided by the mangrove ecosystems. 2. Using aerial (1973) and satellite (1996-2020) images, this study assessed areal changes in mangroves and shrimp farms in the Pambala-Chilaw lagoon complex and Ihala Mahawewa, as well as the ecological footprint of shrimp farming in the study area. 3. Mangroves around the Chilaw lagoon had decreased in areal extent by 45% from 1973 to 2020 of which 92% of this change was attributed to shrimp farming. There was, however, a decrease in the areal extent of shrimp farms from 2001 to 2020, and a corresponding increase in mangroves from 2006 to 2020. 4. The ecological footprint of shrimp farming was assessed by comparing the expected surface ratios with those recorded for shrimp farms with mangroves and surface water bodies in the study area from 1973 to 2020. The results showed that the current shrimp farming was unsustainable (i.e. high ecological footprint).5. While the results support the current view that there is cause for cautious optimism with mangrove conservation (as evidenced by an increase in mangrove areal extent), it also reveals that semi-intensive shrimp farming in Sri Lanka and probably other similar tropical countries is unsustainable.6. If immediate actions such as effective regulation of shrimp farming activities and mangrove restoration are not taken, the mangrove ecosystem will continue to decline.

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Section: Ecological Footprint Of Shrimp Farmingmentioning

confidence: 70%

Section: Discussionmentioning

confidence: 99%

What is the ecological footprint of aquaculture after 5 decades of competition between mangrove conservation and shrimp farm development?

Ofori

Kodikara

Jayatissa

et al. 2022

Aquatic Conservation

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“…Rhizophora mucronata, a species of the Rhizophoraceae family, is one of the most widespread mangrove species in Southeast Asia and tropical areas such as South Asia, East Asia, East Africa, Northern Australia, the western Pacific Islands, until it was introduced to Hawaii (Cañizares and Seronay, 2016;Kusmana, 2014;Priyashantha and Taufikurahman, 2020;Setyawan and Ulumuddin, 2012). This species can be found from sea to land (Basyuni et al, 2018;Tin-Zar-Ni-Win and Soe-Win, 2020).…”

Section: Introductionmentioning

confidence: 99%

Mangrove Management Rhizophora mucronata Lamk. in Mangunharjo, Semarang City Based on Pollen Quality

Adityarini¹,

Prihastanti²,

Hastuti³

et al. 2022

EEC

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Rhizophora mucronata is a type of mangrove that plays an important role in coastal life. Reproductivity of R. mucronata is influenced by environmental factors. This study aims to examine the effect of environmental conditions on pollen quality in terms of viability and germination. The sampling method used was purposive sampling from three stations and two different flowering phases (pre-anthesis and anthesis). Pollen quality was carried out by staining test using acetocarmine dye and germination test using Brewbaker and Kwack (BK) media. The data were then analyzed using analysis of variance. Based on differences in sampling stations, the highest pollen viability was recorded at Station II (91.25%), and the highest was in the preanthesis flowering phase (92.88%). The highest pollen germination was recorded at Station III (95.36%), and the lowest was in the pre-anthesis phase from Station I (87.41%). The results showed that the three different location two different flowering phase were still suitable for the growth of R. mucronata mangroves.

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