CHANGE IN SPECIES COMBINATION OF DEMERSAL FISHES IN PERSIAN GULF AND OMAN SEA “A THREAT FOR ENVIRONMENT”

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VALINASAB T.

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Seminar Paper

Paper Information

Seminar: CONFERENCE FOR COORDINATION OF IRANIAN MARITIME ORGANIZATIONS
Year:2011 | Issue:19

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Title

CHANGE IN SPECIES COMBINATION OF DEMERSAL FISHES IN PERSIAN GULF AND OMAN SEA “A THREAT FOR ENVIRONMENT”

Author(s)

VALINASAB T.

Keywords

PERSIAN GULF

OMAN SEA

DEMERSAL FISHES

SPECIES COMBINATION

ENVIRONMENT

Abstract

VULNERABILITY OF AQUATICS, THE CAPABILITY OF REBUILDING THEIR RESOURCES, AND THE NEED OF HUMAN SOCIETIES, IMPELS US TO ALWAYS CONSIDER THE CHANGES AND THE PRESENT PROCESSES OF THE AQUATICS. ONE WAY TO MEET THIS PURPOSE IS TO DO REGULAR RESEARCH EXCURSIONS TO CONTROL THE POSSIBLE CHANGES IN VARIOUS POPULATIONS AND TO MAKE MANAGEMENT DECISIONS. A QUICK REVIEW OF FISHING DEMERSALS SHOWS THAT THE RATE OF LIVE MASS OF THIS FISH HAS DECREASED WHICH NECESSITATES THE INVESTIGATION AND STUDY OF DEMERSALS SOURCES. SO, THE PERSIAN GULF AND OMAN SEA WITH WATER AREA OF 4 SOUTHERN IRANIAN COASTS WERE COVERED THROUGH A NATIONAL PROJECT TITLED DEMERSALS RESOURCE MONITORING WITH THE SWEPT AREA METHOD AND WITH ONE MANAGEMENT FROM 2002 TO 2010. THE MOST IMPORTANT PURPOSES OF THIS PROJECT WERE: TO DEFINE THE CATCH PER UNIT AREA (FISHING) OF SPECIES OR AQUATIC GROUPS IN VARIOUS DEPTHS; TO DEFINE THE SPECIES COMBINATION OF DEMERSAL FISHES FOR PERSIAN GULF AND OMAN SEA SEPARATELY; AND TO IDENTIFY THE DOMINANT SPECIES IN PERSIAN GULF AND OMAN SEA AND THE SPECIES WHICH ARE AT RISK. TO DO THE OPERATIONAL TOURS, THE FERDOUS 1 RESEARCH VESSEL WAS EQUIPPED WITH TRAWLING NET. ALL THE WATERS OF FOUR PROVINCES WERE DIVIDED TO 17 SUB AREA NAMED FROM A TO Q. THEN, THE SAMPLING WAS DONE IN 320 STATIONS WHICH WERE RANDOMLY SELECTED. AFTER TRAWLING IN EACH STATION, THE AVERAGE OF CATCH PER UNIT AREA (CPUA) AND BIOMASS WERE CALCULATED FOR VARIOUS SPECIES AND FOR ALL THE DEMERSALS. THE COMPARISON OF THE PRESENT RESEARCH WITH PREVIOUS RESEARCHES DONE REVEALS THAT THERE ARE CONSIDERABLE CHANGES IN SPECIES COMBINATION OF PERSIAN GULF AND OMAN SEA FISHES.

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APA: Copy

VALINASAB, T.. (2011). CHANGE IN SPECIES COMBINATION OF DEMERSAL FISHES IN PERSIAN GULF AND OMAN SEA “A THREAT FOR ENVIRONMENT”. CONFERENCE FOR COORDINATION OF IRANIAN MARITIME ORGANIZATIONS. SID. https://sid.ir/paper/908081/en

Vancouver: Copy

VALINASAB T.. CHANGE IN SPECIES COMBINATION OF DEMERSAL FISHES IN PERSIAN GULF AND OMAN SEA “A THREAT FOR ENVIRONMENT”. 2011. Available from: https://sid.ir/paper/908081/en

IEEE: Copy

T. VALINASAB, “CHANGE IN SPECIES COMBINATION OF DEMERSAL FISHES IN PERSIAN GULF AND OMAN SEA “A THREAT FOR ENVIRONMENT”,” presented at the CONFERENCE FOR COORDINATION OF IRANIAN MARITIME ORGANIZATIONS. 2011, [Online]. Available: https://sid.ir/paper/908081/en

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