The role of surface elevation in the rehabilitation of abandoned aquaculture ponds to mangrove forests, Sulawesi, Indonesia

2017 ◽  
Vol 100 ◽  
pp. 325-334 ◽  
Author(s):  
R.R.Y. Oh ◽  
D.A. Friess ◽  
B.M. Brown
Keyword(s):  
Surface Elevation ◽  
Mangrove Forests ◽  
Aquaculture Ponds

scholarly journals Carbon dioxide and methane fluxes at the air–sea interface of Red Sea mangroves

2018 ◽  
Vol 15 (17) ◽  
pp. 5365-5375 ◽  
Author(s):  
Mallory A. Sea ◽  
Neus Garcias-Bonet ◽  
Vincent Saderne ◽  
Carlos M. Duarte
Keyword(s):  
Carbon Dioxide ◽  
Organic Matter ◽  
Red Sea ◽  
Ghg Emissions ◽  
Eastern Coast ◽  
Relative Role ◽  
Emission Rates ◽  
Mangrove Forests ◽  
Ch4 Production

Abstract. Mangrove forests are highly productive tropical and subtropical coastal systems that provide a variety of ecosystem services, including the sequestration of carbon. While mangroves are reported to be the most intense carbon sinks among all forests, they can also support large emissions of greenhouse gases (GHGs), such as carbon dioxide (CO2) and methane (CH4), to the atmosphere. However, data derived from arid mangrove systems like the Red Sea are lacking. Here, we report net emission rates of CO2 and CH4 from mangroves along the eastern coast of the Red Sea and assess the relative role of these two gases in supporting total GHG emissions to the atmosphere. Diel CO2 and CH4 emission rates ranged from −3452 to 7500 µmol CO2 m−2 d−1 and from 0.9 to 13.3 µmol CH4 m−2 d−1 respectively. The rates reported here fall within previously reported ranges for both CO2 and CH4, but maximum CO2 and CH4 flux rates in the Red Sea are 10- to 100-fold below those previously reported for mangroves elsewhere. Based on the isotopic composition of the CO2 and CH4 produced, we identified potential origins of the organic matter that support GHG emissions. In all but one mangrove stand, GHG emissions appear to be supported by organic matter from mixed sources, potentially reducing CO2 fluxes and instead enhancing CH4 production, a finding that highlights the importance of determining the origin of organic matter in GHG emissions. Methane was the main source of CO2 equivalents despite the comparatively low emission rates in most of the sampled mangroves and therefore deserves careful monitoring in this region. By further resolving GHG fluxes in arid mangroves, we will better ascertain the role of these forests in global carbon budgets.

scholarly journals PERAN MASYARAKAT DESA SEJAHTERA DALAM PENGELOLAAN WISATA HUTAN MANGROVE DI KECAMATAN SUKADANA KABUPATEN KAYONG UTARA

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
. Wahyuti ◽  
Iskandar A M ◽  
Gusti Hardiansyah
Keyword(s):  
Mangrove Forest ◽  
National Park ◽  
Descriptive Analysis ◽  
Mangrove Forests ◽  
Community Needs ◽  
Implementation Evaluation ◽  
Village Community ◽  
Tourism Management ◽  
Analysis Technique

The community role is needed in the implementation of mangrove forest tourism management, especially in planning activities. The role of the community is the involvement of community itself in the development activities, both in the planning, implementation, evaluation, and the stages of esnjoying the results of the development itself. The purpose in this descriptive qualitative study was to determine the role of community in managing mangrove forest tourism in the subdistrict of Sukadana of Kayong Utara regency. Data collection techniques consist of observation, interviews, and documentation. While the analysis was carried out with descriptive analysis technique. The results of this study indicate that the role of of the sejahtera village community in managing mangrove forest tourism is limited to the maintenance of natural resources, maintenance of cleanliness and nursery of mangrove forests. Due to mangrove forest management is still fully managed by The Gunung Palung National Park Agency, the role of the community in the management of tourism in mangrove forests is still low. Therefore, the involvement of the surrounding community needs special attention and other related parties in utilizing mangrove forest tourism.Keyword: community role, mangrove forest, themanagement of mangrove tourism

scholarly journals Local Governance Collaboration Model For Preserving Marine Ecosystem In The Coastal Area of Nusa Lembongan Island, Klungkung Regency, Bali

2019 ◽  
pp. 210
Author(s):  
Ida Ayu Putu Sri Widnyani ◽  
I Made Kusna Antara ◽  
Nyoman Diah Utari Dewi
Keyword(s):  
Local Governance ◽  
Local Level ◽  
Marine Ecosystem ◽  
Mangrove Forests ◽  
Local Policy ◽  
Tourist Attractions ◽  
Collaboration Model ◽  
Qualitative Descriptive ◽  
Traditional Institutions

The marine ecosystem on the coast of Nusa Lembongan is one of the tourist attractions such as coral reefs, mangrove forests and others. The high number of tourist visiting the island also impacts tourism facilities. Increased tourism also has the opportunity to damage the marine ecosystem. Therefore needs a collaboration among stakeholders in maintaining the sustainability of the marine ecosystem                . The purpose of this research is to find out and analyze also to find a collaborative model of stakeholders such as government, private sector, community and traditional institutions in preserving the marine ecosystem in Nusa Lembongan. The research is using a qualitative descriptive approach with determining informants technic is purposive sampling. Local government collaboration model in conserving marine ecosystems by strengthening the role of stakeholders at the local level such as: 1) signing memorandum of understanding for creating regional regulations as a policy of the Klungkung Regency; 2) writing in to a local wisdom (awig-awig) as a local policy of the local wisdom institutions (adat); 3) writing into the policy of the tour operator; 4) implement the Tri Hita Karana concept and creating a memorandum of understanding for all parties.

scholarly journals Measuring the role of seagrasses in regulating sediment surface elevation

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Maria Potouroglou ◽  
James C. Bull ◽  
Ken W. Krauss ◽  
Hilary A. Kennedy ◽  
Marco Fusi ◽  
...  
Keyword(s):  
Surface Elevation ◽  
Sediment Surface

scholarly journals Surface Elevation Changes Estimation Underneath Mangrove Canopy Using SNERL Filtering Algorithm and DoD Technique on UAV-Derived DSM Data

2021 ◽  
Vol 11 (1) ◽  
pp. 32
Author(s):  
Norhafizi Mohamad ◽  
Anuar Ahmad ◽  
Mohd Faisal Abdul Khanan ◽  
Ami Hassan Md Din
Keyword(s):  
Ground Surface ◽  
Region Of Interest ◽  
Surface Elevation ◽  
Mangrove Forests ◽  
Elevation Change ◽  
Filtering Algorithm ◽  
Future Situation ◽  
Elevation Changes ◽  
Aerial Vehicle ◽  
Erosion Surface

Estimating surface elevation changes in mangrove forests requires a technique to filter the mangrove canopy and quantify the changes underneath. Hence, this study estimates surface elevation changes underneath the mangrove canopy through vegetation filtering and Difference of DEM (DoD) techniques using two epochs of unmanned aerial vehicle (UAV) data carried out during 2016 and 2017. A novel filtering algorithm named Surface estimation from Nearest Elevation and Repetitive Lowering (SNERL) is used to estimate the elevation height underneath the mangrove canopy. Consequently, DoD technique is used to quantify the elevation change rates at the ground surface, which comprise erosion, accretion, and sedimentation. The significant findings showed that region of interest (ROI) 5 experienced the highest volumetric accretion (surface raising) at 0.566 cm3. The most increased erosion (surface lowering) was identified at ROI 8 at −2.469 cm3. In contrast, for vertical change average rates, ROI 6 experienced the highest vertical accretion (surface raising) at 1.281 m. In comparison, the most increased vertical erosion (surface lowering) was spotted at ROI 3 at −0.568 m. The change detection map and the rates of surface elevation changes at Kilim River enabled authorities to understand the situation thoroughly and indicate the future situation, including its interaction with sea-level rise impacts.

scholarly journals Peran Ekosistem Hutan Mangrove Sebagai Habitat Untuk Organisme Laut

2017 ◽  
Vol 17 (2) ◽  
Author(s):  
Karimah, M. Fahrurrozi
Keyword(s):  
Forest Ecosystem ◽  
Mangrove Forest ◽  
Descriptive Analysis ◽  
Mangrove Ecosystem ◽  
Marine Organisms ◽  
Mangrove Forests ◽  
Land Area ◽  
Portunus Pelagicus ◽  
Important Habitat

AbstrakTulisan ini menjelaskan tentang peran ekosistem hutan mangrove sebagai habitat untuk organisme laut dengan menggunaan analisis diskriptif. Data diambil dari literatur-literatur terkait yang kemudian didiskripsikan lebih lanjut. Data yang diperoleh menunjukkan bahwa hutan mangrove di Indonesia diperkirakan mencakup area seluas 4,25 juta hektar, hanya sekitar 2% dari seluruh wilayah daratan, namun nilai ekonomi dan lingkungannya tidak boleh di bawah perkiraan, oleh karena itu kehadirannya harus dijaga. Sebagai zona transisi antara ekosistem terestrial dan laut, ekosistem mangrove telah lama dikenal memiliki banyak fungsi dan merupakan penghubung penting dalam menjaga keseimbangan biologis ekosistem pesisir. Ekosistem hutan mangrove merupakan habitat penting bagi organisme laut. Umumnya didominasi oleh moluska dan krustasea. Moluska ini terdiri terutama dari Gastropoda dan selanjutnya didominasi oleh dua keluarga, yaitu Potamidae dan Ellobiidae. Sedangkan untuk krustasea, terutama terdiri dari Brachyura. Beberapa fauna mangrove juga dikenal sebagai bahan habis pakai dan secara ekonomi penting seperti Terebralia palustris, Telescopium telescopium (Gastropoda), Anadara kuno, Coaxans polymesoda, Ostrea cucullata (Bivalvia), dan Scylla serrate, S. olivacea, Portunus pelagicus, Epixanthus dentatus, Labnanium politum (Crustacea).Kata kunci : hutan mangrove, ekosistem mangrove, moluska                                                                     Abstract              This paper describes the role of the mangrove forest ecosystem as a habitat for marine organisms by using descriptive analysis. The data are drawn from related literatures which are further described. The data obtained indicate that mangrove forests in Indonesia are estimated to cover an area of 4.25 million hectares, only about 2% of the entire land area, but its economic and environmental value should not be underestimated, therefore its presence must be maintained. As a transition zone between terrestrial and marine ecosystems, the mangrove ecosystem has long been known to have many functions and is an important link in maintaining the biological balance of coastal ecosystems. The mangrove forest ecosystem is an important habitat for marine organisms. Generally dominated by molluscs and crustaceans. This mollusc consists mainly of Gastropods and is further dominated by two families, namely Potamidae and Ellobiidae. As for crustaceans, mainly consisting of Brachyura. Some mangrove fauna are also known as economical and economically important materials such as Terebralia palustris, Telescopium telescopium (Gastropoda), ancient Anadara, Coaxans polymesoda, Ostrea cucullata (Bivalvia), and Scylla serrate, S. olivacea, Portunus pelagicus, Epixanthus dentatus, Labnanium politic (Crustacea).Keywords: mangrove forest, mangrove ecosystem, mollusk,

scholarly journals Effect of Soil Probiotic on Water Quality and Soil Quality Maintenance and Growth of Freshwater Fish Pangasius hypophthalmus

2021 ◽  
Vol 11 (1) ◽  
pp. 3291-3304
Keyword(s):  
Water Quality ◽  
Freshwater Fish ◽  
Soil Quality ◽  
Live Cells ◽  
Enzymatic Preparation ◽  
Net Production ◽  
Quality Maintenance ◽  
Aquaculture Ponds ◽  
Mineralization Of Organic Matter

In recent decades, various procedures have been introduced to improve the conditions of the cultural ponds' conditions in aquaculture. Numerous biological products, including live bacterial inocula, preparation of enzymes, extracts of plant products, and many others, are being promoted to induce water and soil quality conditioners in aquaculture ponds. However, several studies have shown no significant effect of bacterial inoculums, and also the treatment with enzymatic preparation led to an enhancement of microbial mineralization of organic matter, but no effective net production of fish was observed. Probiotics have recently been applied to aquaculture. Probiotics are the live cells or a substrate that induce its benefits by stimulating growth, digestion, and active immune response. Probiotics can also improve water and soil quality. The current study summarizes the role of commercial probiotic ‘Super-PS’ on water quality and soil quality maintenance during the culture of freshwater fish Pangasius hypophthalmus fingerlings.

scholarly journals Remote Sensing Approach for Monitoring Coastal Wetland in the Mekong Delta, Vietnam: Change Trends and Their Driving Forces

2021 ◽  
Vol 13 (17) ◽  
pp. 3359
Author(s):  
An T. N. Dang ◽  
Lalit Kumar ◽  
Michael Reid ◽  
Ho Nguyen
Keyword(s):  
Remote Sensing ◽  
Mekong Delta ◽  
Forested Wetlands ◽  
Rice Fields ◽  
Shoreline Erosion ◽  
Wetland Protection ◽  
Mangrove Forests ◽  
Aquaculture Ponds ◽  
Coastal Lands

Coastal wetlands in the Mekong Delta (MD), Vietnam, provide various vital ecosystem services for the region. These wetlands have experienced critical changes due to the increase in regional anthropogenic activities, global climate change, and the associated sea level rise (SLR). However, documented information and research on the dynamics and drivers of these important wetland areas remain limited for the region. The present study aims to determine the long-term dynamics of wetlands in the south-west coast of the MD using remote sensing approaches, and analyse the potential factors driving these dynamics. Wetland maps from the years 1995, 2002, 2013, and 2020 at a 15 m spatial resolution were derived from Landsat images with the aid of a hybrid classification approach. The accuracy of the wetland maps was relatively high, with overall accuracies ranging from 86–93%. The findings showed that the critical changes over the period 1995/2020 included the expansion of marine water into coastal lands, showing 129% shoreline erosion; a remarkable increase of 345% in aquaculture ponds; and a reduction of forested wetlands and rice fields/other crops by 32% and 73%, respectively. Although mangrove forests slightly increased for the period 2013/2020, the overall trend was also a reduction of 5%. Our findings show that the substantial increase in aquaculture ponds is at the expense of mangroves, forested wetlands, and rice fields/other crops, while shoreline erosion significantly affected coastal lands, especially mangrove forests. The interaction of a set of environmental and socioeconomic factors were responsible for the dynamics. In particular, SLR was identified as one of the main underlying drivers; however, the rapid changes were directly driven by policies on land-use for economic development in the region. The trends of wetland changes and SLR implicate their significant effects on environment, natural resources, food security, and likelihood of communities in the region sustaining for the long-term. These findings can assist in developing and planning appropriate management strategies and policies for wetland protection and conservation, and for sustainable development in the region.

Sign in / Sign up

Export Citation Format

Share Document