scholarly journals Status, Threats and Conservation of the Wetland Ecosystem Dominated with Mangroves in India

2021 ◽  
Vol 4 (6) ◽  
pp. 277-286
Author(s):  
Sharda Dhadse ◽  
Pramila Majumdar ◽  
Ashwini Valluri ◽  
Purushottam Sakhare
Keyword(s):  
Local Community ◽  
Environmental Changes ◽  
Anthropogenic Activities ◽  
National Policy ◽  
Mangrove Ecosystem ◽  
Coastal Development ◽  
Fishing Community ◽  
Marine Habitat ◽  
Mangrove Environment ◽  
Mangrove Conservation

Mangroves are one of the most undermined biological systems. They have immense ecological and economic advantages. Consistent, increment in natural and coastal development like a change of wetlands for hydroponics, construction for tourism, the tsunami has led to the demolishment of mangrove environments in India. The inhabitants of minor zones are at risk of losing their livelihood and there is a threat to the existence of the mangrove ecosystem. It has been noted that from a decade ago, about 40% of the Indian mangrove territories have been lost. At present, the environmental changes and increased anthropogenic activities have become a significant concern for the conservation and sustaining of the mangroves. Conservation of mangrove environment can be accomplished by increasing awareness about their significance among various stakeholders and safeguarding them through mandatory national policy and regulations. A specific policy like Coastal Zone Regulation has been formulated to ensure mangrove conservation, sustainable existence of local community habitat along the coastal area, fishing community, and coastal stretches for marine habitat have been protected.

Grass phytoliths in surface sediments of the Sunderbans, India and their implications in reconstructing past deltaic environmental changes

The Holocene ◽  
2021 ◽  
pp. 095968362110417
Author(s):  
Madhab Naskar ◽  
Ruby Ghosh ◽  
Sayantani Das ◽  
Dipak Kumar Paruya ◽  
Binod Saradar ◽  
...  
Keyword(s):  
Surface Sediments ◽  
Environmental Changes ◽  
Late Quaternary ◽  
Salinity Gradient ◽  
Detrended Correspondence Analysis ◽  
Mangrove Ecosystem ◽  
Sea Level Changes ◽  
Tidal Influence ◽  
Mangrove Environment ◽  
Mangrove Associate

Reliability of grass phytoliths for discriminating different deltaic sub-environments has been assessed on the modern surface sediments collected along the salinity gradient of the Sunderbans delta, India. It has been observed that grass phytolith assemblages can successfully distinguish different deltaic sub-environments especially the true mangrove zones from the mangrove associate and non-mangrove zones with minor overlaps, which further corroborated with the results of discriminant analysis (DA). Detrended correspondence analysis (DCA) and redundancy analysis (RDA) performed on the surface grass phytolith data show that salinity is the most crucial environmental parameter influencing grass phytolith distribution in the deltaic sub-environments. The potential of modern grass phytolith data in reconstructing past deltaic environmental changes has been further assessed on a late Quaternary fossil phytolith spectra from the Sunderbans spanning a sedimentary record for the last ~13.6 ka. A true mangrove environment with discernible tidal influence has been revealed between 13.6 and 3.9 ka. Absence of true mangrove–indicator grass phytoliths between ~3.9 and 2.2 ka further suggests disappearance of mangrove vegetation from this part of the Sunderbans which might have recolonized during ~2.2–0.8 ka. A mangrove associated or non-mangrove environment with little or no tidal influence came into existence in the study area since 0.8 ka onwards. A comparison with some earlier records suggests that the present grass phytolith-based palaeoenvironmental data shows conformity with the past dynamics in mangrove ecosystem in the east coast of India in respect to relative sea level changes.

scholarly journals Analysis of suitability and carrying capacity of mangrove ecosystem for ecotourism in Lembar Village, West Lombok District, Indonesia

2020 ◽  
Vol 21 (2) ◽  
Author(s):  
Sukuryadi Abdillah ◽  
NUDDIN HARAHAB ◽  
MIMIT PRIMYASTANTO ◽  
BAMBANG SEMEDI
Keyword(s):  
Carrying Capacity ◽  
Local Community ◽  
Mangrove Ecosystem ◽  
Observation Data ◽  
Field Surveys ◽  
Tourist Attractions ◽  
Mangrove Ecosystems ◽  
Bird Watching ◽  
Suitability Index ◽  
Mangrove Conservation

Abstract. Sukuryadi, Harahab N, Primyastanto M, Semedi B. 2020. Analysis of suitability and carrying capacity of mangrove ecosystem for ecotourism in Lembar Village, West Lombok District, Indonesia. Biodiversitas 21: 596-604. Mangrove ecosystems in Lembar Village, West Lombok District, Indonesia has high ecological role and economic potentials, and have been as a pilot area for mangrove conservation and rehabilitation activities. In 2015 the area was developed into a mangrove ecotourism area as a form of utilization to obtain ecological and economic sustainability for the local community. The purpose of this study was to determine the suitability and carrying capacity of the mangroves area for the development of mangrove ecotourism. Data collection was conducted using field surveys and direct observation. Data collected were then analyzed to calculate ecotourism suitability index and carrying capacity of the area. The results of data analysis showed that mangrove ecosystem area in Lembar Village is categorized as suitable to be developed as mangrove ecotourism at three stations with value of ecotourism suitability index of 77.78%, while at two stations are categorized conditionally suitable with ecotourism suitability index of 42.22%. Carrying capacity of the area is 2337 people/day with tourist attractions consisting of mangrove tracking (33 people/day), fishing (137 people/day), picnic (1620 people/day), camping ground (542 people/day) and bird watching (6 people/day). Utilization of area based on suitability and carrying capacity is needed to maintain the sustainability of mangrove ecosystems and the economy of coastal communities.

scholarly journals PEMAHAMAN DAN PARTISIPASI MASYARAKAT DALAM PENGELOLAAN EKOSISTEM MANGROVE DI PESISIR LAUT ARAFURA KABUPATEN MERAUKE

2018 ◽  
Vol 13 (1) ◽  
pp. 111
Author(s):  
Maria Diana Widiastuti ◽  
Novel Ruata ◽  
Taslim Arifin
Keyword(s):  
Random Sampling ◽  
Local Community ◽  
Simple Random Sampling ◽  
Mangrove Ecosystem ◽  
Coastal Communities ◽  
Community Activities ◽  
Arafura Sea ◽  
The Government ◽  
Selection Of ◽  
Mangrove Conservation

ABSTRAKEkosistem Mangrove mengalami tekanan dan penurunan jasa lingkungan diduga karena abrasi dan fenomena alam serta aktivitas masyarakat seperti penggalian pasir di pesisir pantai. Pemerintah telah melakukan upaya konservasi Mangrove dengan cara penanaman kembali, namun belum berhasil. Penelitian ini bertujuan untuk mengetahui pengetahuan masyarakat pesisir tentang Mangrove dan tingkat partisipasinya dalam pengelolaan ekosistem Mangrove dan perencanaan program rehabilitasiekosistem Mangrove. Metode pengumpulan data menggunakan instrument pertanyaan berupa angket, observasi dan wawancara secara bersamaan dengan pola terstruktur baik dalam bentuk pertanyaanterbuka dan tertutup dan dianalisis secara deskriptif tabulatif. Penentuan sampel menggunakan sistem kuota dan pemilihan responden menggunakan simple random sampling. Hasil penelitian menyatakan85 persen masyarakat pesisir paham terhadap pentingnya Mangrove bagi kehidupan mereka. Mereka paham bahwa Mangrove sebagai sumber mata pencaharian masyarakat pesisir dan pelindung pantaidari ombak dan abrasi. Mereka juga mengatakan bahwa Mangrove saat ini dalam keadaan kurang baik (53%). Mereka mengaku terlibat aktif dalam kegiatan program penanaman Mangrove (43%) namun bukan atas inisiatif sendiri. Kegiatan pelestarian Mangrove perlu melibatkan masyarakat setempat dalam bentuk pelatihan, penyuluhan atau pengawasan.Title: Community Understanding and Participation to Mangrove Ecosystem Management in the Coastal Area of Arafura Sea, Merauke DistrictsABSTRACTEcosystem Mangrove had underpressure and decreasing environmental services because of abration as natural phenomena, and unsuistainable community activities such as sand mining. The Government has made the conservation of Mangrove by replanting, but has not succeeded. This study aims to determine community knowledge and participation in management ecosystem Mangrove for rehabilitation. The collecting datamethod use a questionnaire instrument, observations and interviews simultaneously with open and closed questions and analyzed in descriptive tabulative. The sample size using the quota method and the selection of respondents used the simple random sampling. The resultshowed that 85 percent of coastal communities understand the importance of Mangrove for their lives. They understand that Mangrove as a source of livelihood of coastal communities and coastal protectionfrom waves and abrasion. They also said that the Mangrove is currently in a state of poor (53 %). They claimed active involved in Mangrove planting program (43 %), but not on their own initiative. The Mangrove conservation activities should be involvedby local community in such training, counseling or supervision.

scholarly journals Sosialisasi Konservasi Hutan Mangrove Berbasis Syariah kepada Masyarakat Pesisir di Gampong Kuala Bubon Kecamatan Samatiga Kabupaten Aceh Barat Propinsi Aceh

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Mohamad Gazali ◽  
Supriadi Supriadi ◽  
Muhammad Nurdin ◽  
Muhammad Ilham
Keyword(s):  
Coastal Area ◽  
Mangrove Forest ◽  
Local Community ◽  
Mangrove Ecosystem ◽  
Mangrove Species ◽  
Coastal Community ◽  
Aceh Province ◽  
Extension Activity ◽  
Real Action ◽  
Mangrove Conservation

The coastal Area of Kuala Bubon subdistrict, Samatiga District, West Aceh regency, Aceh Province have several mangrove species including Rhizoporastylosa, RhizoporaapiculataBI andNypa fruticans. Aceh is popular with epithet “ Serambi Mekkah” that is the only province in Indonesia that stipulated sharia to the Aceh community. The local goverment regulation was designed according to islamic sharia. Dependent rule in Aceh Area is named Qanun Aceh. Therefore, it is neccessary to undertaken a approach to change gradually their mindset for keeping mangrove ecosystem through dakwah media and real action. The main problem in Kuala Bubon’s community are lack of awareness and wide understanding regarding management of mangrove forest sustainable. Otherwise, the involvement and socialization of mangrove conservation with periodically with coastal community is still poor that  undertaken by stakeholder. The purpose of this program is to give undertanding and knowledge regarding forest mangrove conservation that involved cleric and community figure. These programs that is conducted including seedings from natural. Subsequently, we involved local community in da’wah that is conducted in Ramadhan Month. Forincreasing the knowledge about mangrove conservation, we conducted extension activity that attended by local government and coastal community. According to deliberation, we conducted the planting of mangrove seeds in nearby Nurul Iman mosque as green belt. Otherwise, we also give them sedekah to Nurul Iman organizer for development of Nurul Iman Mosque as da’wah media for Kuala Bubon’s community.

scholarly journals Inventory of mangroves in Katunggan Coastal Eco-Park, Sultan Kudarat Province, the Philippines

2019 ◽  
Vol 9 (2) ◽  
Author(s):  
CHERIE CANO MANGAOANG ◽  
ANDRIE BON FLORES
Keyword(s):  
Threatened Species ◽  
Local Community ◽  
Anthropogenic Activities ◽  
Morphological Characteristics ◽  
Mangrove Ecosystem ◽  
The Philippines ◽  
Mangrove Forests ◽  
Anthropogenic Pressures ◽  
Mangrove Species ◽  
The Government

Abstract. Mangaoang CC, Flores AB. 2019. Inventory of mangroves in Katunggan Coastal Eco-Park, Sultan Kudarat Province, the Philippines. Bonorowo Wetlands 9: 59-64. The coastal wetlands of the Philippines are dominated by mangrove ecosystem and are experiencing different forms of threats particularly anthropogenic activities. The local government unit of Lebak in the Province of Sultan Kudarat and non-government organizations envision of rehabilitating and conserving mangrove forests, but no research has been done. Thus, this study was conducted to document different species of mangrove which will serve as a baseline in developing conservation and rehabilitation strategies. Purposive sampling was done and morphological characteristics of each species were examined for identification. A total of 29 mangrove species belonging to 14 families were identified. Three of which are threatened species including Ceriops zippeliana, Avicennia rumphiana and Camptostemon philippinensis. It was also noted that the local community is aware of the importance of mangroves but not all have concern on the conservation and protection policies being implemented by the government. Despite the decreasing status of Philippine mangroves, local exploitation and anthropogenic pressures, such as aquaculture, are still uncontrolled. Therefore, the presence of threatened species implies that the area needs to be prioritized in terms of conservation and rehabilitation activities with joint effort of both the government and local communities to save and protect this mangrove ecosystem.

scholarly journals Multi-domain probiotic consortium as an alternative to chemical remediation of oil spills at coral reefs and adjacent sites

Microbiome ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Denise P. Silva ◽  
Helena D. M. Villela ◽  
Henrique F. Santos ◽  
Gustavo A. S. Duarte ◽  
José Roberto Ribeiro ◽  
...  
Keyword(s):  
Microbial Community ◽  
Coral Reefs ◽  
Environmental Changes ◽  
Oil Spills ◽  
Anthropogenic Activities ◽  
Oil Contamination ◽  
Negative Effects ◽  
Corexit 9500 ◽  
Coral Health ◽  
The Impact

Abstract Background Beginning in the last century, coral reefs have suffered the consequences of anthropogenic activities, including oil contamination. Chemical remediation methods, such as dispersants, can cause substantial harm to corals and reduce their resilience to stressors. To evaluate the impacts of oil contamination and find potential alternative solutions to chemical dispersants, we conducted a mesocosm experiment with the fire coral Millepora alcicornis, which is sensitive to environmental changes. We exposed M. alcicornis to a realistic oil-spill scenario in which we applied an innovative multi-domain bioremediator consortium (bacteria, filamentous fungi, and yeast) and a chemical dispersant (Corexit® 9500, one of the most widely used dispersants), to assess the effects on host health and host-associated microbial communities. Results The selected multi-domain microbial consortium helped to mitigate the impacts of the oil, substantially degrading the polycyclic aromatic and n-alkane fractions and maintaining the physiological integrity of the corals. Exposure to Corexit 9500 negatively impacted the host physiology and altered the coral-associated microbial community. After exposure, the abundances of certain bacterial genera such as Rugeria and Roseovarius increased, as previously reported in stressed or diseased corals. We also identified several bioindicators of Corexit 9500 in the microbiome. The impact of Corexit 9500 on the coral health and microbial community was far greater than oil alone, killing corals after only 4 days of exposure in the flow-through system. In the treatments with Corexit 9500, the action of the bioremediator consortium could not be observed directly because of the extreme toxicity of the dispersant to M. alcicornis and its associated microbiome. Conclusions Our results emphasize the importance of investigating the host-associated microbiome in order to detect and mitigate the effects of oil contamination on corals and the potential role of microbial mitigation and bioindicators as conservation tools. Chemical dispersants were far more damaging to corals and their associated microbiome than oil, and should not be used close to coral reefs. This study can aid in decision-making to minimize the negative effects of oil and dispersants on coral reefs.

Middle-to late Holocene environmental changes based on a multi-proxy lagoonal record, Klisova lagoon, Greece

2021 ◽  
Author(s):  
Alexandros Emmanouilidis ◽  
Konstantinos Panagiotopoulos ◽  
Katerina Kouli ◽  
Pavlos Avramidis
Keyword(s):  
Radiocarbon Dating ◽  
Environmental Changes ◽  
Eastern Mediterranean ◽  
Anthropogenic Activities ◽  
Eastern Mediterranean Region ◽  
Anthropogenic Activity ◽  
Palynological Analysis ◽  
Drilling Site ◽  
Geomorphological Changes ◽  
Shallow Water Depth

<p>Coastal wetlands are dynamic environments prone to climatic and anthropogenic forcing and ideal settings to study past climatic and environmental changes.  In the eastern Mediterranean region and particularly in Greece, the climate presents high spatiotemporal diversity, while human activity is a significant factor in shaping the landscape. This study presents a sediment record from Klisova lagoon, situated in central Greece, at the eastern part of Messolonghi lagoon complex. The area is recorded from antiquity to have great anthropogenic activity. The paleoenvironmental synthesis was based on standard sedimentological analysis (grain size, TOC, magnetic susceptibility), joint micropaleontological and palynological analysis, X-ray Fluorescence scanning, and radiocarbon dating. The Bayesian age-depth model is based on radiocarbon dating and yields an age of 4700 cal BP for the base of the recovered sediment sequence. For the last 4700 years, the freshwater influx, the progradation of the Evinos river delta and related geomorphological changes control the environmental conditions (e.g. depth and salinity) in the lagoon system. Prior to 4000 cal BP, a relatively shallow water depth, significant terrestrial/freshwater input and increased weathering in the lagoon area are inferred. Elemental proxies and increased dinoflagellate and foraminifera abundances, which indicate marine conditions with prominent freshwater influxes, point to the gradual deepening of the lagoon recorded at the drilling site up to 2000 cal BP. The marine and freshwater conditions equilibrium sets at 1300 cal BP, and the lagoonal system seems to reach its present state. Maxima of anthropogenic pollen indicators during the Mycenaean (~3200 cal BP), Hellenistic (~ 2200 cal BP) and Late Byzantine (~ 800 cal BP) periods suggest intervals of increased anthropogenic activities in the study area.  </p>

Late Quaternary vegetation dynamics in a biodiversity hotspot, the Uluguru Mountains of Tanzania

2009 ◽  
Vol 72 (1) ◽  
pp. 111-122 ◽  
Author(s):  
Jemma Finch ◽  
Melanie J. Leng ◽  
Rob Marchant
Keyword(s):  
Environmental Changes ◽  
Vegetation History ◽  
Late Quaternary ◽  
Anthropogenic Activities ◽  
Significant Loss ◽  
Environmental Stability ◽  
Forest Composition ◽  
Eastern Arc ◽  
Uluguru Mountains

AbstractLate Quaternary vegetation history and environmental changes in a biodiverse tropical ecosystem are inferred from pollen, charcoal and carbon isotope evidence derived from a ∼ 48,000-yr sedimentary record from the Uluguru Mountains, a component of the Eastern Arc Mountains of Kenya and Tanzania. Results indicate that Eastern Arc forest composition has remained relatively stable during the past ∼ 48,000 yr. Long-term environmental stability of the Eastern Arc forests has been proposed as a mechanism for the accumulation and persistence of species during glacial periods, thus resulting in the diverse forests observed today. The pollen and isotope data presented here indicate some marked changes in abundance but no significant loss in moist forest taxa through the last glacial maximum, thereby providing support for the long-term environmental stability of the Eastern Arc. Anthropogenic activities, including burning and forest clearance, were found to play a moderate role in shaping the mosaic of forest patches and high-altitude grasslands that characterise the site today; however, this influence was tempered by the inaccessibility of the mountain.

scholarly journals Lake water dissolved inorganic carbon dynamics revealed from monthly measurements of radiocarbon in the Fuji Five Lakes, Japan

Elem Sci Anth ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Kosuke Ota ◽  
Yusuke Yokoyama ◽  
Yosuke Miyairi ◽  
Shinya Yamamoto ◽  
Toshihiro Miyajima
Keyword(s):  
Lake Water ◽  
Inorganic Carbon ◽  
Environmental Changes ◽  
Dissolved Inorganic Carbon ◽  
Anthropogenic Activities ◽  
Aquatic Organisms ◽  
Human Society ◽  
History Of ◽  
Lake Waters ◽  
Reservoir Age

Lakes are sensitive recorders of anthropogenic activities, as human society often develops in their vicinity. Lake sediments thus have been widely used to reconstruct the history of environmental changes in the past, anthropogenic, or otherwise, and radiocarbon dating provides chronological control of the samples. However, specific values of radiocarbon in different carbon reservoirs due to the different pathways of radiocarbon from the upper atmosphere to the lake, called the radiocarbon reservoir age, is always difficult to evaluate because of dynamic processes in and around lakes. There are few systematic studies on radiocarbon reservoir ages for lakes owing to the complex radiocarbon transfer processes for lakes. Here, we investigate lake waters of the Fuji Five Lakes with monthly monitoring of the radiocarbon reservoir effects. Radiocarbon from dissolved inorganic carbon (DIC) for groundwater and river water is also measured, with resulting concentrations (Δ14C) at their lowest at Lake Kawaguchi in August 2018 (–122.4 ± 3.2‰), and at their highest at Lake Motosu in January 2019 (–22.4 ± 2.5‰), despite a distance of 25 km. However, winter values in both lakes show similar trends of rising Δ14C (about 20‰). Our lake water DIC Δ14C results are compared to previously published records obtained from sediments in Lake Motosu and Lake Kawaguchi. These suggest that total organic carbon and compound-specific radiocarbon found in sediments are heavily influenced by summer blooms of aquatic organisms that fix DIC in water. Thus, future studies to conduct similar analyses at the various lakes would be able to provide further insights into the carbon cycle around inland water, namely understanding the nature of radiocarbon reservoir ages.

scholarly journals Spatial models to support the management of coastal marine ecosystems: a short review of the best practices in Liguria, Italy

2013 ◽  
Vol 15 (1) ◽  
pp. 189 ◽  
Author(s):  
M. VACCHI ◽  
M. MONTEFALCONE ◽  
V. PARRAVICINI ◽  
A. ROVERE ◽  
P. VASSALLO ◽  
...  
Keyword(s):  
Human Impacts ◽  
Spatial Models ◽  
Short Review ◽  
Posidonia Oceanica ◽  
Spatial Modelling ◽  
Coastal Development ◽  
Marine Habitat ◽  
Marine Habitats ◽  
Coastal Marine ◽  
The Status

Spatial modelling is an emerging approach to the management of coastal marine habitats, as it helps understanding and predicting the results of global change. This paper reviews critically two recent examples developed in Liguria, an administrative region of NW Italy. The first example, aiming at predicting habitat status depending on pressures, provides managers with the opportunity of envisaging different scenarios for the consequences of coastal development choices. The second example defines the status of an important Mediterranean coastal marine habitat (Posidonia oceanica meadows) under natural conditions, allowing for quantifying human impacts on regressed meadows. Both modelling approaches are useful to define the targets of coastal management, and may help choosing the best management option. Well-planned and sustained monitoring is essential to model validation and improvement.

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