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TableĀ 2 Sources of input data for the steady-state model of Sechura Bay in 1996

From: Trophic and environmental drivers of the Sechura Bay Ecosystem (Peru) over an ENSO cycle

Functional group/parameter

B i (tĀ kmāˆ’2)

P i/B i (yearāˆ’1)

Q i/B i (yearāˆ’1)

GEi

EEi

Y i (tĀ kmāˆ’2Ā yearāˆ’1)

DC

1. Phytoplankton

Converted chl a estimates from SeaWifs (Feldman and McClain 2007)

GU based on modified Eppley curve (Eppley 1972; Brush et al. 2002)

ā€“

ā€“

EO

ā€“

ā€“

2. Macroalgae

IE

GU based on Macchiavello et al. (1987)

ā€“

ā€“

EO

ā€“

ā€“

3. Zooplankton

IMARPE cruise averages 1995ā€“1999 for the area 5Ā°ā€“6Ā°S and within 82Ā°W

GU based on Mendoza (1993), Hutchings et al. (1995)

GU adapted from Polovina and Ow (1985)

EO

GE

ā€“

GU

4. Polychaetes

IE

GU based on Martin and GrƩmare (1997)

EO

GU

EO

ā€“

GU

5. Scallops

IE

Mendo et al. (1987), Stotz and Gonzalez (1997)

Wolff (1994)

EO

EO

IS

GU based on Rouillon et al. (2002)

6. Sea urchins

IE

EM

EO

GU

EO

ā€“

GU

7. Herbivorous gastropods

IE

EM

EO

GU 0.3 based on Mann (1982)

EO

ā€“

GU

8. Benthic detrivores

IE

EM

EO

GU

EO

IS

GU

9. Misc. filter feeders

IE

GU based on Wolff (1994)

EO

GU

EO

IS

GU

10. Predatory gastropods

IE

EO

GE based on Huebner and Edwards (1981)

GU 0,3 based on Huebner and Edwards (1981)

EO

IS

GU, IC

11. Small carnivores

IE

EM

EO

GU

EO

IS

GU partially based on Keen (1972) for gastropod spp., IC

12. Predatory crabs

IE

Wolff and Soto (1992)

Lang (2000), Wolff and Soto (1992)

EO

EO

ā€“

GU based on Leon and Stotz (2004), IC

13. Sea stars

IE

Ortiz and Wolff (2002)

EO

GU

EO

ā€“

GU, IC

14. Octopods

GU based on catch data

EO

Wolff and Perez (1992), Vega and Mendo (2002)

Wolff and Perez (1992), Vega and Mendo (2002)

EO

IS

Cortez et al. (1999), IC

15. Littoral fish

GU based on catch data

GU based on Wolff (1994)

EO

GU

EO

IS

GU based on FISHBASE (2006)

16. Small pelagic fish

GU based on catch data

GU

EO

GU 0,1 based on Moloney (2005)

GU

IS

GU based on FISHBASE (2006)

17. Pelagic predatory fish

GU based on catch data

GU based on Jarre et al. (1991)

EO

GU 0,1 based on Moloney (2005)

EO

IS

GU based on FISHBASE (2006)

18. Marine mammals

GU

GU based on Jarre, Muck, and Pauly (1991)

EO

GU

EO

ā€“

GU

19. Sea birds

GU

GU based on Moloney (200)

EO

GU based on Moloney (200)

EO

ā€“

GU

20. Cephalopods

GU based on catch data

Z derived from VPA (IMARPE) (J. ArgĆ¼elles, pers. comm.) for Loligo gahi

EO

Neira and Arancibia (2004)

EO

IS

Cardoso et al. (1998), Villegas (2001)

21. Detritus

EO

ā€“

ā€“

ā€“

ā€“

ā€“

ā€“

  1. Abbreviations: GC gut content, IE IMARPE benthic macrofauna evaluation, EM empirical model (Brey 2001), EO ecopath output, GU guess estimate, IC iterative consumption routine (described herein), IS IMARPE landings statistics