Remote sensing and geographical information systems: Their past, present and future use in global marine fisheries

Simpson, Joseph

doi:10.1111/j.1365-2419.1992.tb00042.x

Cited by 27 publications

(12 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Prevalence of fish disease was found maximum in January due to no rainfall and minimum in warmer month showing a decreasing trend of infection with the rising the temperature. Simpson et al (1983) cited that the use of acid sulfate soil present serious problems for shrimp culture as liming, sea water flushing and other management practices are required to avoid the low productivity, acidity and heavy toxicity associated with aquaculture which are dissimilar to present finding.…”

Section: Less Rain Reduced Shrimp Farmingmentioning

confidence: 70%

Impacts of climate change on shrimp farming in the South-West coastal region of Bangladesh

Islam

Wahab

2016

Res. Agric. Livest. Fish.

View full text Add to dashboard Cite

The inhabitants of south west region of Bangladesh are prone to floods, cyclones, salinity intrusion and droughts, and the incidence of these hazards is rising. Recently two cyclones (known as Aila and Sidr) hit the southwest region of Bangladesh. Considering the above in view, research had been conducted for understanding the impacts and adaptation measures through sustainable coastal resources management in the cyclone affected greater Khulna areas. The present study was carried out (from January to June, 2011) to understand impacts of climate change on the shrimp farming, hatchery and nursery operations in the selected upazilas (Paikgacha and Shyamnagar). The study was conducted both primary and secondary data sources. To collect primary data different methods had been adopted which were informal interview, a pre-formulated questionnaire survey and Focused Group Discussion (FGD). In the study areas, about 80-90% people are involved with shrimp farming with 10-15 years experience. About 60% shrimp farmers thought that the weather has changed abruptly within the last 5 years. The study showed that the first and foremost factor is high temperature (49.5%). Majority (43.21%) encountered that temperature hampered the farm operation while lower growth (54%), low production (19%), loss of crops (13%), less water (4%), mortality (4%), and diseases (4%) occurred due to less rainfall or no rain. From the study, farmers (80%) reported susceptibility of shrimp to diseases in body deformation, spots or lesions on skins while 13.33% mentioned fry susceptibility to diseases. Some time oriented and need based adaptations in shrimp farming are now most concern. Government and other stakeholders should come forward to execute research for adaptations.Res. Agric., Livest. Fish.3(1): 227-239, April 2016

show abstract

Section: Less Rain Reduced Shrimp Farmingmentioning

confidence: 70%

Impacts of climate change on shrimp farming in the South-West coastal region of Bangladesh

Islam

Wahab

2016

Res. Agric. Livest. Fish.

View full text Add to dashboard Cite

show abstract

“…), temporal (water quality, date of stocking), and grid (remote sensing) data all are necessary to ensure an informed predictive management strategy. Such an information system could have a profound impact on aquaculture (which historically is information-poor and labor intensive) by providing the basis for best management practices without solely relying upon in situ observations with their traditional weaknesses of limited area coverage and lack of near-real time synoptic coverage (Simpson 1992).…”

Section: Management Evaluationmentioning

confidence: 99%

Assessing Noxious Phytoplankton in Aquaculture Systems Using Bio‐Optical Methodologies: A Review

Millie

Schofield

Dionigi

et al. 1995

J World Aquaculture Soc

View full text Add to dashboard Cite

Management practices in aquaculture systems contribute to maximum growth of phytoplankton, often resulting in extensive blooms of noxious cyanobacteria. Because periods of oxygen depletion and “off flavor” events correspond to intense algal growth and metabolic activity, accurate identification of algal dynamics and physiological state is important. Current efforts to assess algal assemblages rely upon microscopic evaluation; however, the incorporation of such evaluation into monitoring programs is limited due to the level of skill and training required, the excessive costs and time required to assess algal heterogeneity within/among aquaculture systems, and the lack of information provided concerning physiological state. The distinct biwptical characteristics of the blooms lend themselves to pigment‐based methodologies (pigment and in vivo absorption “signatures”, chlorophyll a fluorescence, multi‐spectral remote sensing) which complement microscopic evaluation and can be implemented into large‐scale monitoring programs. For example, because the key ingredient for success of such programs is the rapid, reliable, and accurate characterization of algal biomass along variable temporal/spatial scales, remotely‐sensed data acquisition most likely will be required. High‐performance liquid chromatography (HPLC)‐derived pigment and in vivo absorption “signatures” can delineate problematic algal phylogenetic groups and physiological states. Further, measurements of chlorophyll a fluorescence provide estimates of phytoplankton absorption, quantum efficiency, and potentially production potential and growth rate. As such, they can be used to confirm the systematic significance of remotely‐sensed data. It would be highly desirable to integrate an evaluation program using bio‐optical methodologies into a geographic information system to allow for integrating, modeling, and predicting parameters of management interest over the scales relevant to aquacultural and water resource management.

show abstract

“…Some ocean dynamic information should be extracted from SST images since fishes often aggregate near the ocean frontal regions. Some edge detectors such as Laplacian of the Gaussian can be used to extract oceanic fronts and eddies (Simpson 1992). The information of fronts is stored automatically in a database.…”

Section: The Operational Fisheries Oceanography Systemmentioning

confidence: 99%

Development of an operational fisheries oceanography system for North Pacific fishery

Mao¹,

Zhu²,

Pan³

2004

SPIE Proceedings

View full text Add to dashboard Cite

An operational fisheries oceanography system was established to help fishermen analyze the situations of fishery in North Pacific. The system composes of three sub-systems which are a ship-boarding satellite telemetry receiving station, a ship-boarding satellite communication system and a land-based fishery charts producing system. The system can provide some oceanic environmental charts such as sea surface temperature (SST) and relevant derived products which are the most popular use in fishery industry. The accuracy of SST is the most important and affects the performance of the operational system, which is found to be dissatisfactory. Many factors affect the accuracy of SST and it is difficult to increase the accuracy by SST retrieval algorithms and clouds detection techniques. A new technique of temperature error control is developed to detect the abnormity of satellite SST. The performance is evaluated to change the temperature bias from -3.04 to 0.05ć and the root mean square (RMS) from 5.71 to 1.75ć. It is suitable to be employed in an operational satellite-measured SST system and improves the performance of the system in fishery applications.

show abstract

Remote sensing and geographical information systems: Their past, present and future use in global marine fisheries

Cited by 27 publications

References 65 publications

Impacts of climate change on shrimp farming in the South-West coastal region of Bangladesh

Impacts of climate change on shrimp farming in the South-West coastal region of Bangladesh

Assessing Noxious Phytoplankton in Aquaculture Systems Using Bio‐Optical Methodologies: A Review

Development of an operational fisheries oceanography system for North Pacific fishery

Contact Info

Product

Resources

About