CHILEAN JACK MACKEREL WORKSHOP 30 JUNE 4 JULY 2008 0 DISTRIBUTION - - PowerPoint PPT Presentation

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CHILEAN JACK MACKEREL WORKSHOP 30 JUNE 4 JULY 2008 0 DISTRIBUTION AND CONCENTRATION OF JACK MACKEREL ( Trachurus murphyi ) RELATED TO OCEANOGRAPHICAL FEATURES BETWEEN FEATURES BETWEEN NORTH PERU TO NORTH CHILE 30 Trachurus murphyi

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SLIDE 1

CHILEAN JACK MACKEREL WORKSHOP

0°

DISTRIBUTION AND CONCENTRATION OF JACK MACKEREL (Trachurus murphyi) RELATED TO OCEANOGRAPHICAL FEATURES BETWEEN

30 JUNE – 4 JULY 2008

30°

Trachurus murphyi

FEATURES BETWEEN NORTH PERU TO NORTH CHILE

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SLIDE 2

5 000 000 10 000 000 15 000 000 1950 1953 1956 1959 1962 1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995 1998 2001 2004 2007 LANDINGS (Tonns)

JACK MACKEREL ANNUAL LANDINGS IN PERU FROM 1950 TO 2007

1950 1953 1956 1959 1962 1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995 1998 2001 2004 2007

Anchovy Sardine Jack mackerel Pacific mackerel

Jack mackerel

500 tons 700 tons

200 000 400 000 600 000 800 000 1950 1953 1956 1959 1962 1965 1968 1971 1974 1977 1980 1983 1986 1989 1992 1995 1998 2001 2004 2007 LANDINGS (Tonns)

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SLIDE 3

STUDY AREA

LOCATION 4° 00’S – 24° 00’S

Main pelagic resource:

Engraulis ringens Sardinops sagax sagax Trachurus murphyi Scomber japonicus

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SLIDE 4

IMARPE PELAGIC SURVEY Hydroacoustic method LAND OCEANOGRAPHIC STATION SOURCE OF INFORMATION LAND OCEANOGRAPHIC STATION From: ILO (17° S) IV REGIONAL OCEANOGRAPHIC SURVEY

slide-5
SLIDE 5

SYSTEM OF CURRENT BETWEEN SOUTH PERU – NORTH CHILE (JANUARY – OCTOBER 2005)

January February March April May

Eddie oceanográfico

June July August September October

slide-6
SLIDE 6

SELA/BID SURVEY MARCH 1983

5° S 10° S 0° S 15° S

500 000 1 000 000 1 500 000

80° W 85° W

Biomass (thousand tonns)

15° S 20° S 25° S

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SLIDE 7

PELAGIC RESOURCE SURVEY MARCH 2005

5° S 10° S 0° S 15° S 80° W 85° W

Biomass (thousand tonnes)

250 000 500 000 750 000 1 000 000

Chilean Fishery Data

15° S 20° S 25° S

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SLIDE 8

5° S 10° S 0° S 80° W 85° W 80° W 85° W

SELA/BID SURVEY (March 1983) PELAGIC SURVEY (March 2005)

JACK MACKEREL DISTRIBUTION ON MARCH 1983 AND MARCH 2005

15° S 20° S 25° S

Chilean Fichery Data

30° S

slide-9
SLIDE 9

5 000 6 000 7 000 8 000 9 000

sand of tonnes) SOUTH NORTH CENTER

HIGH BIOMASS INTERPHASE LOW BIOMASS

JACK MACKEREL BIOMASS IN PERU FROM 1983 TO 2007

RESEARCH SURVEY

1 000 2 000 3 000 4 000 5 000

BIOMASS (Thousa

1983

Mar-83 Oct-83 Aug-84 Mar-85 Apr-86 Aug-87 May-88 Aug-89 Dec -89 Mar-90 Jan -91 Aug-91 Mar-92 Mar-93 Mar-94

  • 1995

Mar-95 Mar-96 Nov-96 Abr-97 Oct-97

  • Apr-97

Oct-97

1998 2007

Nov-97 Abr-98 Jun-98 Set-98 Dec -98 Mar-99 Jun-99 Aug-99 Dec -99 Feb-00 Aug-00 Nov-00 Mar-01 Aug-01 Nov-01 Mar-02 Nov-02 Mar-03 Mar-04 Mar-05 Dec -05 Mar-06 Nov-06 Mar-07 Nov-97 Apr-98 Jun-98

  • 98
  • 98

Mar-99 Jun-99

  • 99
  • 99

Feb-00

  • 00

Nov-00 Mar-01

  • 01

Nov-01 Mar-02 Nov-02 Mar-03 Mar-04 Mar-05

  • 05

Mar-06 Nov-06 Mar-07

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SLIDE 10

55000 60000 65000 70000 75000 80000 85000 90000 95000 100000 105000 110000 115000

A (toneladas) 3° S 4° S 5° S 6° S 7° S 8° S 9° S 10° S 11° S 12° S

55000 60000 65000 70000 75000 80000 85000 90000 95000 100000 105000 110000 115000

A (toneladas)

55000 60000 65000 70000 75000 80000 85000 90000 95000 100000 105000 110000 115000

A (toneladas) 3° S 4° S 5° S 6° S 7° S 8° S 9° S 10° S 11° S 12° S

MONTHLY CATH DISTRIBUTION OF JACK MACKEREL RELATED TO ATSM IN ILO

5000 10000 15000 20000 25000 30000 35000 40000 45000 50000 55000

CAPTURA 13° S 14° S 15° S 16° S 17° S 18° S

E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006

5000 10000 15000 20000 25000 30000 35000 40000 45000 50000 55000

CAPTURA

5000 10000 15000 20000 25000 30000 35000 40000 45000 50000 55000

CAPTURA 13° S 14° S 15° S 16° S 17° S 18° S

E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E J N E

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006

  • 2.0
  • 1.0

0.0 1.0 2.0 3.0 4.0 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006

ATSM-Ilo (° C)

slide-11
SLIDE 11

10 20 30 40 50

CATCH (%)

120 160

B (Thous

120 160 120 160 120 160

Sep - Oct November

WATER COLUMN (200 km) OFF SOUTH AMERICAN COAST RELATED TO JACK MACKEREL BIOMASS AND CATCH (SEPTEMBER 2001)

40 80 120

BIOMASS usand of tonnes)

40 80 120 40 80 120 40 80 120

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 LATITUD SUR (° S) CHILE PERU ¦ ECUADOR ¦ COLOMBIA Estación DISTANCIA (km) 300 200 100 4000 3500 3000 2500 2000 1500 1000 500 300 200 100 PROFUNDIDAD (m)

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SLIDE 12

17° S

82 %

17° S

82 %

NORTH CHILE

99 %

16° S

46 %

JACK MACKEREL

Juvenile (%)

JACK AND PACIFIC MACKEREL LENGTH STRUCTURE

(February, 17th – 23rd 2003)

10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44

Total length (cm)

NORTH CHILE 55 %

PACIFIC MACKEREL

10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40

Fork length (cm)

16 % Juvenile (%) SOUTH PERU

slide-13
SLIDE 13

JACK MACKEREL ANNUAL LENGTH STRUCTURE BY LATITUDINAL DEGREE (1996-2007)

1996 1997 1998 1999 2000 2001

  • 03º
  • 04º
  • 05º
  • 06º
  • 07º
  • 08º
  • 09º
  • 10º
  • 11º
  • 12º
  • 13º
  • 14º
  • 15º
  • 16º
  • 17º
  • 18º

LATITUDINAL DEGREE El Niño

10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50

Evento cálido

  • 03º
  • 04º
  • 05º
  • 06º
  • 07º
  • 08º
  • 09º
  • 10º
  • 11º
  • 12º
  • 13º
  • 14º
  • 15º
  • 16º
  • 17º
  • 18º

2002 2003 2004 2005 2006 2007

  • 03º
  • 04º
  • 05º
  • 06º
  • 07º
  • 08º
  • 09º
  • 10º
  • 11º
  • 12º
  • 13º
  • 14º
  • 15º
  • 16º
  • 17º
  • 18º

2002 2003 2004 2005 2006 2007

10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50

LATITUDINAL DEGREE

LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm) LENGTH SIZE (cm)

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SLIDE 14

CONCLUSION

During 1983 to 2007 drastically changes

  • ccurs

in distribution and concentration of jack mackerel on Peruvian sea, and these changes would be linked to interdecadal and interannual changes of environmental conditions, linked to interdecadal and interannual changes of environmental conditions, and they will be important for to test hypothesis about the structure of jack mackerel population, and also for resource management.

slide-15
SLIDE 15

3 4 AL

1983 2001

INTERDECADAL AND INTERANNUAL CHANGES OF ENVIRONMENTAL CONDITIONS (1900-2007)

  • 4
  • 3
  • 2
  • 1

1 2 1900 19051910 1915 1920 19251930 1935 1940 19451950 1955 1960 19651970 1975 1980 19851990 1995 2000 20052010 2015 VARIABILIDAD AMBIENTA