Anthropogeomorphology of marine fisheries in India: understanding the critical roles of Marine Fishery Advisories towards achieving SDG 14

2021 ◽  
Author(s):  
Sudip Kumar Kundu ◽  
Harini Santhanam
Keyword(s):  
Continental Shelf ◽  
Marine Environment ◽  
Search Time ◽  
Marine Fisheries ◽  
Anthropogenic Pressures ◽  
The Sustainable Development ◽  
Marine Fishery ◽  
Iuu Fishing ◽  
Sea Bottom ◽  
Marine Fishing

<p>The livelihoods of more than 30 per cent of the total population in India residing in nine maritime states and four Union Territories are dependent on the diverse ecosystem services offered by coastal and marine systems. Marine fisheries contribute significantly to the Indian economy through the foreign exchange from the export of seafood which corresponds to nearly 5 per cent of the overall export and 20 per cent of the agro-export. In recent times, the anthropogenic pressures due to extensive marine fishing introduce challenges in the marine environment. Marine anthropogeomorphology, capable of transforming the natural settings of the continental shelf dominantly, is often not studied in detail from the perspective of sustainable fishing. For example, the use of the assorted fishing gears can damage the sea floor, apart from the capture of juvenile and non-target fishes. Bottom trawling by mechanised crafts as a part of marine fishing affects the geomorphology of the continental shelf and continental slope by displacing boulders, interrupting the structure of the sediment column, resuspending sediments, and imprinting deep holes on the muddy sea bottom. Occasionally, the abandoned fishing nets/gears on the seafloor are also responsible for the geomorphological damages to the bottom of the sea and death of several marine benthic flora and fauna, a phenomenon referred to as ‘ghost fishing’. Further, Illegal, Unreported and Unregulated (IUU) fishing in the ocean also poses major threats for the marine environment. Thus, it is essential to quantify these impacts of anthropogeomorphology in order to achieve the targets of the Sustainable Development Goal (SDG) 14, promulgated by the United Nations Organisation. Marine Fishery Advisories, especially, Potential Fishing Zones (PFZ) advisories may be helpful in reducing the impacts by aiding sustainable harvesting of pelagic fishes under the current scenario. The ESSO-Indian National Centre for Ocean Information Services (INCOIS) is the nodal agency, which disseminates PFZ advisory since 1999 using remotely sensed datasets of sea surface temperature and chlorophyll-a to reduce the uncertainty during marine fishing. PFZ advisory can help to promote environment-friendly fishing by reducing the search time and hence, ensuring minimal damage to the marine environment.</p>

scholarly journals Analysis on the Development Trend of Marine Fishery Governance

2020 ◽  
Vol 9 (7) ◽  
pp. 32
Author(s):  
Zhi Chen ◽  
Chaojie Yang ◽  
Wubo Wan ◽  
Yongzhen Liu ◽  
Zhenbo Chen ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Development Trend ◽  
Marine Ecology ◽  
Ecological Environment ◽  
Marine Fisheries ◽  
The Sustainable Development ◽  
Marine Fishery ◽  
Marine Economy ◽  
Fishery Governance ◽  
The Development Trend

Marine fishery is an important part of China’s economic development. Marine fishery is not only related to the development of marine economy, but also the marine ecological environment. It is very important to promote the competitiveness of marine fisheries, protect marine ecology, and explore the sustainable development of marine fisheries. In this regard, this article analyzes the development trend of marine fisheries, analyzes the current problems in marine fishery governance, and explores effective countermeasures for the development of marine fishery governance, hoping to provide some ideas for promoting marine fishery governance and enhancing the benefits of marine fishery development.

scholarly journals Research on the Current Situation of Development and Utilization of Marine Fishery Resources

2020 ◽  
Vol 4 (10) ◽  
Author(s):  
Chaojie Yang ◽  
Lixia Yang ◽  
Jinling Li ◽  
Enni Wu ◽  
Ruo Su ◽  
...  
Keyword(s):  
Current Situation ◽  
Marine Resources ◽  
Marine Fisheries ◽  
The Sustainable Development ◽  
Environmental Destruction ◽  
Marine Fishery ◽  
Marine Management ◽  
Fishery Resources ◽  
Development And Utilization ◽  
Marine Fishery Resources

Since the reform and open-up, China’s marine fishery has developed rapidly, but it has also caused some practical contradictions. The focus is on the contradictions between overfishing and depleted fishery resources, and the continuous decline of marine fishery resources. The environmental destruction of marine resources and the sanitation and safety of marine aquatic products restrict the sustainable development of marine fisheries in the future. This article discusses the current situation of the development and utilization of marine fishery resources in China, and proposes some optimization measures for marine management in view of the current difficulties faced by marine fisheries.

scholarly journals AIS and VBD Data Fusion for Marine Fishing Intensity Mapping and Analysis in the Northern Part of the South China Sea

2021 ◽  
Vol 10 (5) ◽  
pp. 277
Author(s):  
Xiaoen Li ◽  
Yang Xiao ◽  
Fenzhen Su ◽  
Wenzhou Wu ◽  
Liang Zhou
Keyword(s):  
South China Sea ◽  
South China ◽  
Coastal Area ◽  
Data Sources ◽  
Intensity Data ◽  
Marine Fishery ◽  
Fishing Vessels ◽  
Intensity Information ◽  
Marine Fishery Resources ◽  
Marine Fishing

For the sustainable development of marine fishery resources, it is essential to comprehensively, accurately, and objectively obtain the spatial characteristics and evolution law of fishing intensity. However, previous studies have focused more on the use of single data sources, such as AIS (Automatic Information System) and VBD (VIIRS boat detection), to obtain fishing intensity information and, as such, have encountered some problems, such as insufficient comprehensive data coverage for ships, non-uniform spatial distribution of data signal acquisition, and insufficient accuracy in obtaining fishing intensity information. The development of big data and remote sensing Earth observation technology has provided abundant data sources and technical support for the acquisition of fishing intensity data for marine fisheries. Based on this situation, this paper proposes a framework that integrates the data of fishing vessels from two sources (AIS, with high space-time granularity, and VBD, with short revisit cycle and high sensitivity), in order to obtain such information based on closely matching and fusing the vector point data of ship positions. With the help of this framework and the strategy of indirectly representing fishing intensity by data point density after fusion, the spatial characteristics and rules of fishing intensity in typical seasons (February, April, September, and November) in the northern South China Sea in 2018 were systematically analyzed and investigated. The results revealed the following: (1) Matching and fusing AIS and VBD data can provide a better perspective to produce robust and accurate marine fishery intensity data. The two types of data have a low proximity match rate (approximately 1.89% and 6.73% of their respective inputs) and the matching success for fishing vessels in the data was 49.42%. (2) Single AIS data can be used for nearshore (50 to 70 km) marine fishery analysis research, while VBD data reflect the objective marine fishing in space, showing obvious complementarity with AIS. (3) The fishing intensity grid data obtained from the integrated data show that high-intensity fishing in the study area was concentrated in the coastal area of Maoming City, Guangdong (0–50 km); the coastal area of Guangxi Beihai (10–70 km); around Hainan Island in Zhangzhou (10–30 km); and the Sanya nearshore area (0–50 km). However, it did not decay with increasing offshore distance, such as at the Trans-Vietnamese boundary in the Beibu Gulf, near the China–Vietnam Common Fisheries Area (50 km) and high-intensity fishing areas. (4) The obtained fishing intensity data (AIS, VBD, and AIS + VBD) were quantitatively analyzed, showing that the CV (Coefficient of Variation) of the average for each month (after fusing the two types of data) was 0.995, indicating that the distribution of the combined data was better than that before fusion (before fusion: AIS = 0.879, VBD = 1.642). Therefore, the integration of AIS and VBD can meet the need for a more effective, comprehensive, and accurate fishing intensity analysis in marine fishery resources.

scholarly journals DISIPLIN SUBSIDI PERIKANAN DALAM SISTEM PERDAGANGAN GLOBAL DAN IMPLIKASINYA BAGI PERIKANAN INDONESIA

2019 ◽  
Vol 5 (1) ◽  
pp. 130-165 ◽  
Author(s):  
Dyan F. D. Sitanggang
Keyword(s):  
Financial Aid ◽  
Marine Environment ◽  
World Trade ◽  
Government Policies ◽  
Fish Stock ◽  
Environment Protection ◽  
Medium Scale ◽  
The World ◽  
Marine Fishing ◽  
Fishing Practices

Government policies providing financial aid to small and medium scale business enterprises are found everywhere around the globe, including those that is managed by Indonesia, and is allowed under the world trade arrangement managed by the WTO. An important part of this policy is subsidies made available to fishing businesses. Be that as it may, overfishing and the resulting fish stock crisis globally has made the practice of subsidizing marine fishing enterprises suspect in light of marine environment protection. This article discusses the issues of fishing subsidies as practiced in Indonesia in view of the current regime of economic law and the need to develop a sustainable fishing practices.

scholarly journals Global-scale human pressure evolution imprints on sustainability of river systems

2019 ◽  
Vol 23 (9) ◽  
pp. 3933-3944 ◽  
Author(s):  
Serena Ceola ◽  
Francesco Laio ◽  
Alberto Montanari
Keyword(s):  
Hot Spot ◽  
Global Scale ◽  
Mitigation Strategies ◽  
First Century ◽  
Human Pressure ◽  
River Systems ◽  
Anthropogenic Pressures ◽  
Discharge Data ◽  
The Sustainable Development ◽  
Major River

Abstract. Human pressures on river systems pose a major threat to the sustainable development of human societies in the twenty-first century. Previous studies showed that a large part of global river systems was already exposed to relevant anthropogenic pressures at the beginning of this century. A relevant question that has never been explained in the literature so far is whether these pressures are increasing in time, therefore representing a potential future challenge to the sustainability of river systems. This paper proposes an index we call “Differential Human Pressure on Rivers” (DHPR) to quantify the annual evolution of human pressure on river systems. DHPR identifies a per-year percentage increment (or decrement) of normalized human pressures on river systems (i.e., ratio of annual values to long-term average). This index, based on annual nightlights and stationary discharge data, is estimated for 2195 major river basins over a period of 22 years, from 1992 to 2013. The results show that normalized annual human pressure on river systems increased globally, as indicated by an average DHPR value of 1.9 % per year, whereby the greatest increase occurred in the northern tropical and equatorial areas. The evaluation of DHPR over this 22-year period allows the identification of hot-spot areas, therefore offering guidance on where the development and implementation of mitigation strategies and plans are most needed (i.e., where human pressure is strongly increasing).

scholarly journals Pre-Pliocene tectonostratigraphic framework of the Provence continental shelf (eastern Gulf of Lion, SE France)

2016 ◽  
Vol 187 (4-5) ◽  
pp. 187-215 ◽  
Author(s):  
François Fournier ◽  
Aurélie Tassy ◽  
Isabelle Thinon ◽  
Philippe Münch ◽  
Jean-Jacques Cornée ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Sedimentary Cover ◽  
Normal Component ◽  
Fault Reactivation ◽  
Normal Faults ◽  
Seismic Profiles ◽  
Structural Framework ◽  
Sea Bottom ◽  
Marine Surface ◽  
Marine Seismic

AbstractThe seaward extension of onshore formations and structures were previously almost unknown in Provence. The interpretation of 2D high-resolution marine seismic profiles together with the integration of sea-bottom rock samples provides new insights into the stratigraphic, structural and paleogeographic framework of pre-Messinian Salinity Crisis (MSC) deposits of the Provence continental shelf. Seven post-Jurassic seismic units have been identified on seismic profiles, mapped throughout the offshore Provence area and correlated with the onshore series. The studied marine surface and sub-surface database provided new insights into the mid and late Cretaceous paleogeography and structural framework as well as into the syn- and post-rift deformation in Provence. Thick (up to 2000 m) Aptian-Albian series whose deposition is controlled by E-W-trending faults are evidenced offshore. The occurrence and location of the Upper Cretaceous South-Provence basin is confirmed by the thick (up to 1500 m) basinal series downlaping the Aptian-Albian unit. This basin was fed in terrigenous sediments by a southern massif (“Massif Méridional”) whose present-day relict is the Paleozoic basement and its sedimentary cover from the Sicié imbricate. In the bay of Marseille, thick syn-rift (Rupelian to Aquitanian) deposition occurred (>1000 m). During the rifting phase, syn-sedimentary deformations consist of dominant N040 to N060 sub-vertical faults with a normal component and N050 drag-synclines and anticlines. The syn-rift and early post-rift units (Rupelian to early Burdigalian) are deformed and form a set of E-W-trending en echelon folds that may result from sinistral strike-slip reactivation of N040 to N060 normal faults during a N-S compressive phase of early-to-mid Burdigalian age (18–20 Ma). Finally, minor fault reactivation and local folding affect post-rift deposits within a N160-trending corridor localized south of La Couronne, and could result from a later, post-Burdigalian and pre-Pliocene compressive phase.

Sudbury Basin Sediments and the Meteoritic Impact Theory of Origin for the Sudbury Structure

1975 ◽  
Vol 12 (4) ◽  
pp. 629-635 ◽  
Author(s):  
F. W. Beales ◽  
G. P. Lozej
Keyword(s):  
Marine Environment ◽  
Large Impact ◽  
Bottom Current ◽  
Meteoritic Impact ◽  
Basin Structure ◽  
Sea Bottom ◽  
Sudbury Structure ◽  
Impact Theory ◽  
Current Circulation

The Whitewater Group preserved within the Sudbury Basin structure conforms to a logical succession of beds to be expected for sediments accumulated in a large impact-generated crater. The lowest beds of the Group, the lower Onaping Formation, represent impact-generated breccia and fall-back material, the upper Onaping Formation and the overlying Onwatin Slates represent the restricted crater series, while the succeeding Chelmsford Sandstone represents an open marine turbidite sequence. The turbidites swept across the area at a time when the crater rim was no longer influencing sea bottom current circulation. The apparent anomaly of the occurrence of sediments deposited in an extensive marine environment and presently only found within the Sudbury Basin is attributed to preferential preservation, due to compaction-generated subsidence over the crater and impact-fractured area.

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