JPH047740Y2 - - Google Patents

Info

Publication number
JPH047740Y2
JPH047740Y2 JP1988107839U JP10783988U JPH047740Y2 JP H047740 Y2 JPH047740 Y2 JP H047740Y2 JP 1988107839 U JP1988107839 U JP 1988107839U JP 10783988 U JP10783988 U JP 10783988U JP H047740 Y2 JPH047740 Y2 JP H047740Y2
Authority
JP
Japan
Prior art keywords
plates
spawning
salmon
protrusion
protrusions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP1988107839U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0229265U (bs
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1988107839U priority Critical patent/JPH047740Y2/ja
Publication of JPH0229265U publication Critical patent/JPH0229265U/ja
Application granted granted Critical
Publication of JPH047740Y2 publication Critical patent/JPH047740Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

Landscapes

  • Revetment (AREA)
  • Artificial Fish Reefs (AREA)
JP1988107839U 1988-08-16 1988-08-16 Expired JPH047740Y2 (bs)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988107839U JPH047740Y2 (bs) 1988-08-16 1988-08-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988107839U JPH047740Y2 (bs) 1988-08-16 1988-08-16

Publications (2)

Publication Number Publication Date
JPH0229265U JPH0229265U (bs) 1990-02-26
JPH047740Y2 true JPH047740Y2 (bs) 1992-02-28

Family

ID=31342615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988107839U Expired JPH047740Y2 (bs) 1988-08-16 1988-08-16

Country Status (1)

Country Link
JP (1) JPH047740Y2 (bs)

Also Published As

Publication number Publication date
JPH0229265U (bs) 1990-02-26

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