The solutions for construction of sea dike and sea embankments system as the sandy mud trap to support mangrove plants in the coastal zone of Hai Phong city, Vietnam

Mangrove plants play a viral role in protecting the coast, retraining erosion. Especially in areas considered the variable wave conditions, complex dynamic conditions such as the coastal region of Hai Phong city. However, due to various reasons, the development/additional planting of mangrove forests in the coastal area of Hai Phong in some locations has not achieved the desired result. This study was conducted survey measurements of mangroves, terrain, and practical experience to assess the ecological impact of certain dynamic and sedimentary conditions on mangroves. Thereby proposing several solutions to build sea dykes/embankments suitable to Hai Phong conditions, strengthen sediment traps, and create favorable conditions for developing mangrove trees in this area.

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ASOSIASI GASTROPODA DENGAN TUMBUHAN MANGROVE PADA EKOSISTEM PANTAI DI NEGERI TIOUW DAN NEGERI HARIA KECAMATAN SAPARAUA KABUPATEN MALUKU TENGAH

Biopendix: Jurnal Biologi, Pendidikan dan Terapan ◽

10.30598/biopendixvol4issue2page83-96 ◽

2019 ◽

Vol 4 (2) ◽

pp. 83-96

Author(s):

Linus Takandare ◽

Pamela Mercy Papilaya

Keyword(s):

Coastal Waters ◽

Mangrove Forests ◽

Natural Ecosystems ◽

Ecological Value ◽

High Productivity ◽

Mangrove Plants ◽

Rhizophora Apiculata ◽

Mangrove Ecosystems ◽

Ceriops Tagal

Background: Mangrove forests are one of the unique natural ecosystems with high ecological value. Mangrove ecosystems are one of the areas with high productivity because there are litter and decomposition of litter and detritus occurs. This study was conducted to determine the association between gastropods and mangrove plants. Method: Research on gastropod association with mangrove plants in the coastal waters of Tiouw Village and Haria Village was conducted in January 2018. Results: This study found from gastropods 6 species namely variabilis strombus, microurceus strombus, Nassarius luridus, Strombus urceus, Cypraea annulus, Strombus, Strombus, Nerita squamulata. From the mangrove plants, 10 species were found: Avicennia eucalyptifolia, Avicennia lanata, Bruguiera sexangula, Rhizophora apiculata, Bruguiera hainessi, Aegiceras floridum R, Aegiceras curniculatum L, Bruguiera palviflora, Bruguiera exaristafa, Ceriops tagal. Conclusion: Association values ranged from 0.741-0.9773 with positive and negative types. This means that both types of seagrass are often found together or not found together in the observation location

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Neopestalotiopsis alpapicalis sp. nov. a new endophyte from tropical mangrove trees in Krabi Province (Thailand)

Phytotaxa ◽

10.11646/phytotaxa.393.3.2 ◽

2019 ◽

Vol 393 (3) ◽

pp. 251 ◽

Cited By ~ 1

Author(s):

VINIT KUMAR ◽

RATCHADAWAN CHEEWANGKOON ◽

ELENI GENTEKAKI ◽

SAJEEWA S. N. MAHARACHCHIKUMBURA ◽

RASHIKA S. BRAHMANAGE ◽

...

Keyword(s):

New Species ◽

Dynamic Systems ◽

Novel Species ◽

Fungal Species ◽

Mangrove Forests ◽

Opportunistic Pathogens ◽

Rhizophora Apiculata ◽

Mangrove Ecosystems ◽

Mangrove Trees ◽

A New Species

Mangrove forests are dynamic systems primarily confined to tropical and subtropical coastal regions. Mangroves are highly complex habitats sustaining a diverse array of terrestrial and aquatic fungal species. Endophytic fungi are widely distributed in mangrove ecosystems and are integral contributors to global biodiversity. Neopestalotiopsis species occur as endophytes, saprobes and opportunistic pathogens of many plant hosts. Herein, a new species of Neopestalotiopsis, N. alpapicalis, was collected from the mangrove trees Rhizophora apiculata and Rhizophora mucronata, in Krabi, Thailand. Morphological features conform to those of Neopestalotiopsis. Number of apical appendages and size of apical cells of the newly described species differ from those of phylogenetically related species. A combined dataset of ITS, β-tub and TEF1 genes was used to infer the phylogenetic placement of the new species. The two strains of novel species, N. alpapicalis clustered together and have a close affinity to N. rosicola.

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Dictyota adnata Zanardini (Phaeophyceae) - A new record from the Sundarbans mangrove forests, Bangladesh

Bangladesh Journal of Botany ◽

10.3329/bjb.v49i2.49323 ◽

2020 ◽

Vol 49 (2) ◽

pp. 407-412

Author(s):

Md Ariful Islam ◽

Md Rashedul Islam ◽

Abdul Aziz ◽

Lawrence M Liao

Keyword(s):

Brown Alga ◽

New Record ◽

Clayey Soil ◽

Mangrove Forests ◽

Mangrove Plants ◽

Sundarbans Mangrove ◽

The Sundarbans

Samples were collected from Arpangasia and Kholpetua rivers within the Sundarbans in Bangladesh during February to March and December 2018. Among several forms was found a tightly prostrate brown alga occurring on moist parts of mangrove plants and clayey soil. Flattened brownish thalli tightly attached to pneumatophores and lower parts of mangrove trunks, spreading and branching dichotomously, sometimes overlapping and attached by means of unbranched marginal and sub-marginal rhizoids were collected. Distinct marginal sori are well developed in fertile specimens. On the basis of these characters, the sample has been identified as Dictyota adnata Zanardini which is herein reported as a new record for Bangladesh.

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Diversity of Mangrove Plant for Support Ecotourism Activities in Nature Conservation Forum Putri Menjangan, Pejarakan Buleleng-Bali

Journal of Environmental Management and Tourism ◽

10.14505//jemt.v9.5(29).10 ◽

2018 ◽

Vol 9 (5) ◽

pp. 987

Author(s):

I Ketut GINANTRA ◽

Ida Bagus Made SUASKARA ◽

Martin JONI

Keyword(s):

Nature Conservation ◽

Plant Species ◽

Diversity Index ◽

Leaf Shape ◽

Mangrove Forests ◽

Mangrove Species ◽

Mangrove Plant ◽

Mangrove Plants ◽

Wiener Diversity Index ◽

Mangrove Zonation

This study aims to identify the species of mangrove constituents and determine the zonation of the growing community of mangrove plants from the seaward to the landward zone, of the Nature Conservation Forum (NCF) Putri Menjangan coastal Pejarakan village Buleleng from July to October 2017. Identification of mangrove plant species based on the following characteristics: habitus, root type, fruit shape, inflorescence, leaf shape and leaf arangement. Zoning of mangrove grown is determined from vegetation analysis conducted in 3 zones (front zone, middle zone and back zone) with quadrat method, the area of each square is 20 m x 20 m. Parameters specified in each kwadrat are the density, dominance and frequency of presence of each species. Zoning of mangrove community is determined based on the important value of mangrove plant species. The diversity of the mangrove community is calculated by the Shanon-Wiener Diversity Index. The results of the study identified 13 species of true mangrove plants (mangrove) and 14 mangrove mangrove associates. The dominant species are Sonneratia alba (important value / iv is 98.19), Lumnitzera racemosa (iv. is 40.75), Rhizophora apiculata (iv.is 35.53), Rhizophora mucronata (iv. 33.02), Ceriops decandra (iv.23.61) and Avicennia marina (iv. 22.22). The diversity index of mangrove species (H) is 2.07, then it is considered good. The pattern of growing mangrove plants in coastal Pejarakan Buleleng, in general follow the natural pattern of mangrove zonation. Typical characteristics and patterns of growing mangrove zonation become interesting attractions and reference for mangrove area managers in ecotourism development and efforts to conserve mangrove forests.

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The Essence of the Competitiveness of Coastal Regions

THE PROBLEMS OF ECONOMY ◽

10.32983/2222-0712-2021-1-45-51 ◽

2021 ◽

Vol 1 (47) ◽

pp. 45-51

Author(s):

A. P. Bezkhlibna ◽

Keyword(s):

Coastal Region ◽

Ecosystem Approach ◽

Coastal Regions ◽

Theoretical Concepts ◽

Current State ◽

Territorial Unit ◽

Environmental Requirements ◽

New Interpretation ◽

Historical Heritage ◽

Favorable Conditions

The article aims at defining the key theoretical concepts related to providing the competitiveness of coastal regions and studying the essence of the terms "coastal region", "competitiveness", "competitiveness of the coastal region". The features and characteristics of the coastal region are determined, the classification of the region's competitiveness is expanded, which has helped to suggest a new interpretation of the "coastal region" term. A coastal region is an administrative-territorial unit that due to its geographic position has access to the sea coast with its own waters, specializes in coastal economic and ecosystem activities, creates its own maritime complex of industries with the appropriate infrastructure, faces specific social problems and environmental requirements, has its own cultural and historical heritage, the latter reflecting the maritime theme. A binary understanding of the “coastal region” term is suggested: coastal regions are treated as oblasts and as territorial communities, the administrative boundaries of which extend to the coastline. It has been found out that the competitiveness of a coastal region is an indicator emphasizing the region's ability to respond to external challenges; ensuring the use of ecosystem approach to designing the best possible region's economic structure; overcoming seasonality in tourism and recreation; taking into account the specifics of social and environmental problems of the region; preserving the cultural and mental identity of the region to create favorable conditions for the inhabitants. To create a concept for ensuring the competitiveness of coastal regions it is necessary to make not only theoretical generalizations, but also a comprehensive diagnosis of the current state of competitiveness, which is impossible without discussing the components of competitiveness, as comprehensive assessment will be done with regard to them.

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COLONIZATION OF MANGROVE FOREST AT ABANDONED SHRIMP-POND OF SEGARA ANAKAN-CILACAP

Jurnal Teknosains ◽

10.22146/teknosains.6050 ◽

2015 ◽

Vol 4 (1) ◽

Author(s):

Tjut Sugandawaty Djohan

Keyword(s):

Mangrove Forest ◽

Mangrove Ecosystem ◽

Mangrove Forests ◽

Shrimp Ponds ◽

Shrimp Pond ◽

Mangrove Tree ◽

Rhizophora Apiculata ◽

Acanthus Ilicifolius ◽

Avicennia Alba ◽

Mangrove Trees

During the 1996 to 1997, large areas of mangrove forest in the Segara Anakan were cleared and converted into intensive shrimp-ponds. After one to two years, these shrimp-ponds failed and were abandoned. These abandoned ponds created large gap areas and canopy gaps, which were colonized by mangrove shrub and liana. The Segara Anakan mangrove also experienced heavy siltation, and there were tree cuttings from the remnant of the mangrove trees. This research aimed to study the colonization of mangrove vegetation at the abandoned-shrimp pond. Vegetation data were collected using rectangular plots of 25 m x 25 m with 4 replicates. The water qualities were also studied. The results revealed that the mangrove forests were composed of two layers: canopy tree and floor-vegetation. The gap areas triggered the pioneer species of mangrove shrubs and liana, Acanthus ilicifolius and Derris heterophylla, to colonize and dominate 100% of the mangrove forest floor. The mangrove trees consisted of natural and planted tree species. The natural trees were Sonneratia alba, Avicennia alba, and saplings of Aegiceras corniculatum, which varied between 56 – 136, 4, and 4 individuals per ha, respectively. The planted trees were Rhizophora apiculata, which amounted to 4 – 12 individuals per ha, at the island of the ponds. These trees and saplings were entangled by the liana mangrove, which disturbed their growth. The A. ilicifolius and D. heterophylla prevented the mangrove tree propagules to grow, and they colonized and characterized those abandoned shrimp-ponds, which threatened the Segara Anakan mangrove ecosystem.

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Geographic and environmental contributions to genomic divergence in mangrove forests

10.1101/2020.01.08.889717 ◽

2020 ◽

Cited By ~ 1

Author(s):

Michele Fernandes da Silva ◽

Mariana Vargas Cruz ◽

João de Deus Vidal Júnior ◽

Maria Imaculada Zucchi ◽

Gustavo Maruyama Mori ◽

...

Keyword(s):

Genetic Variation ◽

Avicennia Germinans ◽

Global Changes ◽

Mangrove Forests ◽

Tidal Variation ◽

Mangrove Species ◽

Coastal Species ◽

Precipitation Regimes ◽

Isolation By Environment ◽

Mangrove Trees

ABSTRACTAssessing the relative importance of geographic and environmental factors to the spatial distribution of genetic variation may provide relevant information about the processes that maintain genetic variation in natural populations. With a globally wide but very restricted habitat distribution, mangrove trees are an interesting model for studies aiming to understand the contributions of these factors. Mangroves occur along the continent-ocean interface of tropical and subtropical latitudes, regions considered inhospitable to many other plant types. Here, we used landscape genomics approaches to investigate the relative contributions of geographic and environmental variables to the genetic variation of two black mangrove species, Avicennia schaueriana and Avicennia germinans, along the South American coast. Using single nucleotide polymorphisms, our results revealed an important role of ocean currents in the gene flow of A. schaueriana and isolation by environment as the pattern that best explains the genetic differentiation of A. germinans. Additionally, for both species, we observed significant correlations between genetic variation with evidence of selection and precipitation regimes, tidal variation, solar radiation and temperature patterns. These discoveries expand our knowledge about the evolution of mangrove trees and provide important information to predict future responses of coastal species to the expected global changes for this century.

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MANGROVE FOREST CONDITION IN PIRU BAY, WEST SERAM, MOLUCCAS

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v7i2.11138 ◽

2016 ◽

Vol 7 (2) ◽

Author(s):

Fasmi Ahmad

Keyword(s):

Mangrove Forest ◽

Local Community ◽

Coastal Region ◽

Mangrove Ecosystem ◽

Line Transect ◽

Mangrove Forests ◽

Forest Condition ◽

Number Of Individuals ◽

The Village ◽

Made In

Information on condition and biodiversity of mangrove ecosystem to support a sustainable management of mangrove ecosystem is very important in the coastal region of Eti village, Piru Bay, West Seram, Molluccas. The purposes of this study were to determine the condition and biodiversity of mangrove ecosystem in the village of Eti, Gulf Piru. Filed data collection was conducted in November 2010 using the line transect method. The box size along the transects was made in accordance with its purposes such as 10 x 10 m2 for trees, 5 x 5 m2 for sapling, and 1 x 1 m2 for seed. The distance between the box transect was 25 m. Number of individuals of each species were counted and the diameter at the chest-height was also measured. Results showed that sixteen species were found within ten genera. There were 9 species of tree categories, 10 species of sapling categories, and 8 species of seed categories. The highest density and frequency of occurrence for the three categories was represented by Rhizophora apiculata, while the largest coverage percentage was represented by Sonneratia alba. The highest important value was also represented by Rhizophora apiculata. In general, the condition of mangrove forests in the village of Eti, Piru Bay was still relatively good, but the local community was very active to take advantage of these mangrove forests products such as charcoal, fencing, and wood that they sold every week. Therfore, it is necessary for local government efforts to protect the mangrove ecosystem from destructed activities of the local community.Keywords: mangrove forest, Rhizophora apiculata, Sonneratia alba, Teluk Piru, Molluucas

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Spatial Habitat Suitability Models of Mangroves with Kandelia obovata

Forests ◽

10.3390/f11040477 ◽

2020 ◽

Vol 11 (4) ◽

pp. 477 ◽

Cited By ~ 1

Author(s):

Shang-Shu Shih

Keyword(s):

Environmental Factors ◽

Habitat Suitability ◽

Mangrove Forests ◽

Kandelia Obovata ◽

Sea Levels ◽

Inundation Frequency ◽

Rising Sea Levels ◽

Mangrove Trees ◽

Mangrove Biomass ◽

Spatial Habitat

Mangrove forests provide important estuarine ecosystem services but are threatened by rising sea levels and anthropogenic impacts. Understanding the habitat characteristics required for mangrove growth is significant for mangrove restoration and integrated management. This study aims to build spatial habitat suitability index (HSI) models for Kandelia obovata mangrove trees. Biological and habitat-related environmental data were collected in the Wazwei and Guandu wetlands in northern Taiwan. We adopted inundation frequency, soil sorting coefficient, and water salinity as the key environmental factors to build HSI models. The dependent variable of these environmental factors was the mangrove biomass per unit area. Significant differences were found for the mangrove biomass on different substrata and shore elevations. The tidal creek had the lowest elevation, and mangrove areas were found at the highest elevations. The oxidization level of the substrate under mangrove forests was high, indicating that the root system of mangroves could carry oxygen into the soil and result in oxidation. Human activities were found to lead to the reduced growth conditions of mangroves. The validation of the HSI model, considering the inundation frequency and soil sorting coefficient, proved to be reliable, with an accuracy ranging from 78% to 90%. A better simulation was found after revising the model by incorporating the factor of water salinity. The model forecast of the mangrove responses to the sea-level rise indicated an increase in the inundation frequency and thus an induced shift and shrinkage of the mangrove area. The increased HSI values of the bare mudflat area demonstrate an option for the potential restoration of mangrove trees. Given the findings of this study, we concluded that mangroves could spread from estuaries to upstream areas due to rising sea levels and might be limited by humanmade impacts. Restoring degraded floodplains is suggested for mangrove habitat rehabilitation.

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PREVALENCE OF CANDIDA ASSOCIATED DENTURE STOMATITIS (CADS) AND SPECIATION OF CANDIDA AMONG COMPLETE DENTURE WEARERS OF SOUTH WEST COASTAL REGION OF KARNATAKA

Journal of Health and Allied Sciences NU ◽

10.1055/s-0040-1703679 ◽

2013 ◽

Vol 03 (03) ◽

pp. 059-063

Author(s):

Vinaya Bhat ◽

S.M. Sharma ◽

Veena Shetty ◽

C.S. Shastry ◽

Vaman Rao ◽

...

Keyword(s):

Candida Albicans ◽

Coastal Region ◽

Cross Sectional Survey ◽

Candida Spp ◽

Cross Sectional ◽

Denture Stomatitis ◽

Main Species ◽

South West ◽

Causative Agents ◽

Favorable Conditions

AbstractA denture wearer is highly prone to develop Candida associated denture stomatitis (CADS), due to the conversion of the normal oral commensal Candida spp. into a pathogen under favorable conditions. Immuno-compromised status, trauma from the prosthesis, other systemic conditions and improper maintenance of the dentures by the patient are few of the causative agents which turn the oral balance into an unhealthy and unsuitable foundation for the wearing of the prosthesis. Prevalence of denture stomatitis caused by the fungi Candida has been identified worldwide and has been reported to be around 65 to 70% of the denture wearers. The main species that causes infection has been Candida albicans, however, recently, there is a shift to non-Candida albicans-Candida (NCAC).This cross-sectional survey was undertaken to find the prevalence of denture stomatitis and the causative species in the south westcoastal region of Karnataka.

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