scholarly journals The Sand Bar Formation and Its Impact on the Mangrove Ecosystem:A Case Study of Kadalundi Estuary of Kadalundi River Basin in Kerala, India

2016 ◽  
Vol 11 (1) ◽  
pp. 65-71 ◽  
Author(s):  
K B. Bindu ◽  
G Jayapal
Keyword(s):  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Urban Waste ◽  
Sand Bars ◽  
Mangrove Ecosystems ◽  
Mangrove Vegetation ◽  
Sand Bar ◽  
Kerala State ◽  
Bar Formation

Mangrove ecosystems are prone to die due to both anthropogenic and natural effects. The present study is a case study of how the formation of sand bars affects the natural mangrove ecosystem and becoming a threat to its rich biodiversity of flora and fauna. The Kadalundi – Vallikkunnu Community Reserve located in Kozhikode and Malappuram Districts in Kerala State is the first community reserve of Kerala, declared in 2007 which spread across 1.5 sq. km. andthis area includes Kadalundi bird sanctuary, mangroves and estuarine. These area mainly affected by numerous biotic interferences like over fishing, collection of oyster and mussels, mining of sand and lime and also retting of coconut. The formation of sand bars at the mouth of the river has resulted in the massive die back of the mangrove vegetation, especially that of Avicennia Marina which is one of the five species of mangroves found in the Kadalundi – Vallikunnu community reserve. The illegal utilization of land for coconut plantation, urbanization and dumping of urban waste near the mouth of the river had made the problem highly complicated. The present study highlights the need for urgent measures to be adopted from the authorities to ensure community participation for restoration of community reserve.

scholarly journals Regeneration capacity and threats to mangrove areas on the southern coast of Oriental Mindoro, Philippines: Implications to mangrove ecosystem rehabilitation

2020 ◽  
Vol 21 (8) ◽  
Author(s):  
AARON FROILAN RAGANAS ◽  
ANNALEE S. HADSALL ◽  
NELSON M. PAMPOLINA ◽  
STEFAN HOTES ◽  
DAMASA B. MAGCALE-MACANDOG
Keyword(s):  
Dominant Species ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Regeneration Capacity ◽  
Southern Coast ◽  
Mangrove Species ◽  
Rhizophora Apiculata ◽  
Mangrove Ecosystems ◽  
Sonneratia Alba ◽  
Ecosystem Rehabilitation

Abstract. Raganas AFM, Hadsall AS, Pampolina NM, Hotes S, Magcale-Macandog DB. 2020. Regeneration capacity and threats to mangrove areas on the southern coast of Oriental Mindoro, Philippines: Implications to mangrove ecosystem rehabilitation. Biodiversitas 21: 3625-3636. Regeneration capacity is important as it determines the fate of an ecosystem. This study assessed six mangrove areas in the southern coast of Oriental Mindoro, Philippines to evaluate their regeneration capacity status. Four mangrove ecotypes were delineated namely seaward, middle, landward and riverine zones at each mangrove ecosystem, where dominant mangrove species were identified and selected for regeneration capacity study. Three subplots measuring 1 x 1 m2 were laid within the five 10 x 10 m2 survey plots established per zone. The juveniles were counted and categorized according to their height classes, using linear regeneration sampling method; where: RCI (≤40 cm) considered seedlings; RCII (41-150 cm) as saplings; and RCIII (151-≤300 cm) as small trees. Potential threats both anthropogenic and natural were determined through key informant interviews. Seven dominant species were identified across ecotypes in all mangrove sites, namely Avicennia marina, Avicennia rumphiana, Ceriops decandra, Rhizophora apiculata, Rhizophora mucronata, Sonneratia alba, and Xylocarpus granatum. RCI (seedlings) is the most abundant across mangrove sites irrespective of the dominant species. Fishpond operation within the mangrove stand is considered a major threat to the juveniles and most mangrove ecosystems. Therefore, protection and constant monitoring of these mangrove ecosystems are necessary to ensure regeneration success in the future.

scholarly journals Development of a Numerical Model to Analyze the Formation and Development Process of River Mouth Bars

2021 ◽  
Vol 33 (6) ◽  
pp. 308-320
Author(s):  
Yeon-Joong Kim ◽  
Joung-Woon Woo ◽  
Jong-Sung Yoon ◽  
Myoung-Kyu Kim
Keyword(s):  
Formation Process ◽  
Numerical Models ◽  
Sediment Supply ◽  
Management Approach ◽  
Sediment Discharge ◽  
Duration Of Action ◽  
Sand Bars ◽  
Tidal Sand ◽  
Sand Bar ◽  
Bar Formation

An integrated sediment management approach that includes the recovery of the amount of declined sediment supply is effective as a fundamental solution to coastal erosion. During planning, it is essential to analyze the transfer mechanism of the sediments generated from estuaries (the junction between a river and sea) to assess the amount and rate of sediment discharge (from the river to sea) supplied back to the coast. Although numerical models that interpret the tidal sand bar flushing process during flooding have been studied, thus far, there has been no study focusing on the formation and development processes of tidal sand bars. Therefore, this study aims to construct wave deformation, flow regime calculation, and topographic change analysis models to assess the amount of recovered sediment discharge and reproduce the tidal sand bar formation process through numerical analysis for integrated littoral drift management. The tidal sand bar formation process was simulated, and the wave energy and duration of action concepts were implemented to predict the long-term littoral movement. The river flux and wave conditions during winter when tidal sand bars dominantly develop were considered as the external force conditions required for calculation. The initial condition of the topographic data directly after the Maeupcheon tidal sand bar flushing during flooding was set as the initial topography. Consequently, the tidal sand bar formation and development due to nearshore currents dependent on the incident wave direction were reproduced. Approximately 66 h after the initial topography, a sand bar formation was observed at the Maengbang estuary.

scholarly journals ASSOCIATION OF LOKAN SHELL Geloina erosa, SOLANDER 1786 AND MANGROVE AT KAHYAPU COASTAL AREA OF ENGGANO ISLAND, BENGKULU PROVINCE

2017 ◽  
Vol 8 (2) ◽  
pp. 613-624
Author(s):  
Nella Tri Agustini ◽  
Dietriech G. Bengen ◽  
Tri Prartono
Keyword(s):  
Coastal Area ◽  
Organic Materials ◽  
Mangrove Ecosystem ◽  
Line Transect ◽  
Mangrove Ecosystems ◽  
Mangrove Vegetation

Lokan shell Geloina erosa closely related to mangrove ecosystem in Enggano island. Mangrove is one supplier of organic materials required by Lokan shell. The research conducted in September 2015 - January 2016 at mangrove ecosystems in Kahyapu coastal area, aims to analyse lokan shells Geloina erosa conditions and its association with mangrove ecosystems. Sampling of mangrove vegetation was taken using line transect and lokan shell sampling using plot in mangrove ecosystem. The results show that mangrove condition of the Kahyapu coastal area was in healthy condition for the growth of lokan shell. Lokan shell are significantly assosiated with mangrove in Kahyapu coastal area of Enggano Island.

Integrating the Ecosystem Services Paradigm into Environmental Law: A Mechanism to Protect Mangrove Ecosystems?

2019 ◽  
Vol 31 (2) ◽  
pp. 291-314 ◽  
Author(s):  
Justine Bell-James
Keyword(s):  
Environmental Management ◽  
Ecosystem Services ◽  
Environmental Law ◽  
Legal Reform ◽  
Mangrove Ecosystem ◽  
Comprehensive Analysis ◽  
Environmental Resources ◽  
Mangrove Ecosystems ◽  
Legal Frameworks

Abstract The ecosystem services paradigm is a widely recognised concept in ecology and environmental management, but one that is not uniformly incorporated into environmental law. This article argues that the integration of this paradigm into law can assist with protection of critical environmental resources, using mangrove ecosystems as an example. This article commences with a defence of the ecosystem services paradigm, followed by a discussion of the ecosystem services provided by mangroves. It argues that a comprehensive analysis of existing laws is a necessary first step towards legal reform, and to this end, it proposes a rubric for assessment of laws and legal frameworks. This rubric is applied to laws in Queensland, Australia, as a case study. It concludes by identifying major deficiencies in the recognition of mangrove ecosystem services in existing laws, and calling for reform in this area.

Makrobenthos Sebagai Indikator Tingkat Kesuburan Tambak Di Pantai Utara Jawa Tengah

2017 ◽  
Vol 19 (1) ◽  
pp. 38
Author(s):  
Fuad Muhammad ◽  
Munifatul Izzati ◽  
Moch. Abdul Mukid
Keyword(s):  
Community Structure ◽  
Stable State ◽  
Mangrove Ecosystem ◽  
Natural Food ◽  
Mangrove Ecosystems ◽  
Pond Ecosystem ◽  
Mangrove Vegetation ◽  
Abundance And Diversity ◽  
Study Sites ◽  
Number Of Individuals

Makrobenthos that live in the mangrove forest can be used to predict the role or contribution of mangrove ecosystems as a source of natural food for the environment. The aims of research to determine the structure, composition, abundance, diversity makrobenthos of the mangrove ecosystem. The study was conducted by comparing the community structure makrobenthos in pond ecosystem with mangrove vegetation constituent . The location of this study include three areas , Mangunharjo (Semarang), Surodadi (Demak) and  Pasarbangi (Rembang). The result can shows makrobentos species composition is dominated by gastropods ( 18 species) , Bivalvia ( 13 species ) , Polychaeta ( 3 types ) , and crustaceans ( 2 types ) . Cerithium and Littorina scabra is a type that has a high density of the mangrove ecosystem . There are differences in the abundance and diversity of plankton and makrobenthos at three study sites. In general Pasarbangi Coast has the highest abundance and diversity . Macrozoobenthos community structure in mangrove ecosystems that exist in the three study sites in a stable state , species diversity and distribution of the number of individuals of each type of uniform . Pasarbangi area with mangrove vegetation polyculture farms , have high primary productivity . This shows the level of primer productivity at the site is also high . Keywords: community structure, macrobenthos, pond ecosystem

scholarly journals KAJIAN EKOWISATA UNTUK KONSERVASI MANGROVE : STUDI KASUS DI KECAMATAN MUARA DUA, KOTA LHOKSEUMAWE, PROVINSI NANGGROE ACEH DARUSSALAM.

2018 ◽  
Vol 5 (1) ◽  
pp. 25
Author(s):  
Yulie Rahayu Fitrianingsih
Keyword(s):  
Swot Analysis ◽  
Stakeholder Participation ◽  
Management Strategies ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Rehabilitation Program ◽  
Natural Ecosystems ◽  
Natural Habitats ◽  
Mangrove Ecosystems ◽  
Aceh Province

In recent decades, the utilization of mangrove ecosystem continues to increase, not only in terms of others uses, but also in terms of the utilization of mangrove trees, both traditional and commercial. Encroachment and conversion of mangrove land into farms, residential, industrial, and so on, as well as logging by people for various puposes, rsulting in disturbed mangrove ecosystems and natural habitats damaged. The role and function of mangroves is essential and accompained by increased use of destructive activity is accompanied by a decrease in mangrove area has been properly made efforts to improve the conservation and maintenance of the mangrove ecosystem. One of the efforts to improve the conversation and rehabilitation of mangrove ecosystems through the study of ecotourism.. Several location on the East Coast of Aceh Province have been succesfully rehabilitated, for example, in District of Muara Dua, Lhokseumawe. This study aims to asses the potential and feasibility of mangrove ecosystem for the development of ecotourism as a conservation of natural ecosystems and to plan management strategies in the area of mangrove ecotourism should be developed that is viewed from several aspects (mangrove vegetation, wildlife, facilities and infrastructure, stakeholder participation, institutional and legislation. The method used was a descriptive exploratory method with percentage and SWOT analysis. The results of the study indicated that the mangrove ecosystem in generally more prevalent types of Rhizophora mucronata, R. apiculata and Avicennia marina. Stakeholder participation in the mangrove rehabilitation program consisting of government. Keywords : Mangrove, Rahabilitation, Participation, Ecotourism, Strategy Management.

scholarly journals Konsep Co-Management dalam Pendekatan Pengelolaan Lingkungan Mangrove di Desa Lubuk Kertang, Brandan Barat, Sumatera Utara

2020 ◽  
Vol 5 (1) ◽  
pp. 129
Author(s):  
A Hadian Pratama Hamzah ◽  
Trisno Anggoro ◽  
Sri Puryono
Keyword(s):  
Management Strategies ◽  
Stakeholder Analysis ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Mangrove Forests ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
Importance Index ◽  
Sonneratia Alba ◽  
Mangrove Vegetation

Mangroves are one of the important coastal ecosystems that have various benefits and their uses are carried out by various stakeholders. This study aims to 1) find out and analyze the condition of mangrove resources and community beneficiaries, 2) analyze the roles and functions of each stakeholder, and 3) find out and analyze the form of co-management of mangrove ecosystem management in Lubuk Kertang Village, West Brandan, Langkat Regency. Mangrove vegetation data collection is done using the quadratic transect method; while taking socioeconomic, institutional, and interview data using survey and purposive sampling methods. Data obtained from mangrove vegetation include density, frequency, cover, and mangrove importance index. Stakeholder analysis using a matrix of interests and influences. Research shows there are 5 types of mangroves in Lubuk Kertang Village, namely Avicennia marina, Rhizophora mucronata, Rhizophora apiculata, Rhizophora stylosa and Sonneratia alba. Strategies in the context of expanding mangrove forests are with these types. Stakeholder analysis identified 16 stakeholders who were classified in 4 groups, namely subject, key players, crowd, and by standers. Mangrove management in Lubuk Kertang Village is still in the consultative stage. To improve effectiveness, management is directed at the cooperative level in the co-management spectrum with management strategies.

scholarly journals Local indigenous strategy to rehabilitate and conserve mangrove ecosystem in the southeastern Gulf of Kupang, East Nusa Tenggara, Indonesia

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
RONGGO SADONO ◽  
DJOKO SOEPRIJADI ◽  
ARI SUSANTI ◽  
Jeriels Matatula ◽  
EKO PUJIONO ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Remote Sensing Data ◽  
Mangrove Ecosystem ◽  
Local Communities ◽  
Observation Data ◽  
Mangrove Forests ◽  
Similar Action ◽  
Mangrove Ecosystems ◽  
Mangrove Rehabilitation

Abstract. Sadono R, Soeprijadi D, Susanti A, Matatula J, Pujiono E, Idris F, Wirabuana PYAP. 2020. Local indigenous strategy to rehabilitate and conserve mangrove ecosystem in the southeastern Gulf of Kupang, East Nusa Tenggara, Indonesia. Biodiversitas 21: 1250-1257.  The existence of local communities around mangrove ecosystems plays essential role to support the effort of conservation programs in this area. This study is aimed to investigate a set of situation faced by local communities in the southeastern Gulf of Kupang (SGK), East Nusa Tenggara Province which led to the rehabilitation of once degraded mangrove forests in SGK and the strategies to conserve the recovered mangrove forests. A case study approach was developed using purposive sampling to collect information regarding the historical situation of mangrove forests in SGK. Further, remote sensing method using multi-temporal observation data was used to investigate the changes in mangrove cover from 1994 to 2019. This study revealed that a series of situations became the fundamental of the success in retaining the existence of mangrove ecosystems in SGK. First, the negative impacts of mangrove degradation affected the communities badly in relation to their livelihoods in fisheries and marine sector as well as other environmental services. Then, this situation led to the emergent of a local champion to initiate mangrove rehabilitation efforts which firstly did not get attention from most of the communities. After some initial successes, the efforts of the local champion was then followed by other members of communities, triggering a bigger scale of mangrove rehabilitation. Having the mangrove recovered, the communities set of highly strict local indigenous rules in which every indigenous people who conducting illegal logging in the mangroves would be expelled from the village, while a large fine was given for outside people who did the similar action. Currently, more than 90% of respondents have understood the benefits of mangroves and derived advantages from it, particularly in improving their prosperity and security. The results of the success of mangrove rehabilitation and conservation in SGK was confirmed by the increasing extent of mangrove vegetation using remote sensing data. The case study of rehabilitation and conservation in SGK provided valuable learning for communities in other areas.

scholarly journals Struktur Vegetasi Mangrove berdasarkan Karakteristik Substrat di Pantai Karang Sewu, Gilimanuk Bali

2021 ◽  
Vol 4 (1) ◽  
pp. 29
Author(s):  
Pande Komang Egar Prihandana ◽  
I Dewa Nyoman Nurweda Putra ◽  
Gede Surya Indrawan
Keyword(s):  
Vegetation Structure ◽  
Sandy Loam ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Tree Level ◽  
Loss On Ignition ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba ◽  
Mangrove Vegetation ◽  
Lumnitzera Racemosa

Karang Sewu Beach is one of the areas in the West Bali National Park (TNBB) which has a natural mangrove ecosystem. One of parameters affecting mangrove growth is substrate. This research aims to determine the vegetation structure, substrate characteristics, and different vegetation groups of mangroves based on its substrate characteristics in Karang Sewu Beach. This study collected the data on vegetation structure using a plotted line method with 2x2, 5x5, 10x10 and 20x20 meters transects. Substrate texture was analyzed using a pipette method while total organic material was analyzed using the Loss on Ignition (LOI) method. Mangrove vegetation was categorized based on substrate characteristics using the descriptive quantitative method. Results showed there were nine species of mangrove found in Karang Sewu Beach, namely Ceriops tagal, Sonneratia alba, S. caseolaris, Rhizophora apiculata, R. mucronata, R. stylosa, R. lamarckii, Lumnitzera racemosa, and Avicennia marina. INP in the first station was dominated by R. apiculata for tree levels (152,88 %), pole (174,24 %), sapling (139,04 %), and seedling (111,48 %). R. lamarckii dominated the second station with a tree level value of 226,94 % while C. tagal dominated for pole level (220,82 %), sapling (243,65 %), and seedling (182,94 %). INP in the third stasion was dominated by C. tagal for pole level (103,68 %), sapling (98,77 %) and seedling (95,51 %). Mangrove substrate in Karang Sewu Beach was characterized as having a sand like texture, dusty loam, sandy loam, loamy sand, and sandy clay with moderate organic matter (2.44 %) to low (0.79 %). Mangrove vegetation grouping based on substrate characteristics in Karang Sewu Beach was different in general. A. marina is found in the middle zone, where this species is usually found in the front zone.  

scholarly journals Analisis Ekonomi Keterkaitan Ekosistem Mangrove dengan Sumber Daya Udang

2014 ◽  
Vol 1 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Osmaleli Osmaleli ◽  
Tridoyo Kusumastanto ◽  
Meti Ekayani
Keyword(s):  
Secondary Data ◽  
Mangrove Ecosystem ◽  
Fishing Effort ◽  
Marginal Productivity ◽  
Mangrove Ecosystems ◽  
Wide Range ◽  
Shrimp Production ◽  
Mathematical Equations ◽  
Ecosystem Linkages

Mangroves provide a wide range of ecosystem services. Therefore, the existence of mangrove ecosystem needs to be maintained ecologically, economically and socially. This study aimed to identify the mangrove ecosystem linkages with shrimp. Data used in this study were primary and secondary data to generalize a case study on shrimp and mangrove ecosystem linkages in Pabean Udik Village Indramayu regency. The economy analysis of the relationship between mangroves and shrimp used mathematical equations by Barbier and Ivar (1994). Mangrove ecosystem linkage with shrimp seen from the marginal productivity of mangrove area (MPM) was 153.454 tons per km2, while the marginal productivity of fishing effort (MPE) wais 0,305 tons per trip using the shrimp catching boat. The study showed that the decline in mangrove ecosystems area would affect the decline in shrimp production, and the increase in mangrove ecosystems area would affect the incrase in the number of shrimp production.

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