Representative Species

Mud turtle (Kinosternon subrubrum), Striped mud turtle (Kinosternon bauri), Ornate diamondback terrapin (Malaclemys terrapin macrospilota and M. t. rhizophorarum), Florida red-bellied turtle (Chrysemys nelsoni), Chicken turtle (Deirochelys reticularia), Green turtle (Chelonia mydas), Hawksbill (Eretmochelys imbricata), Loggerhead (Caretta caretta), Atlantic ridley (Lepidochelys kempii).

References   Odum et al. 1982.



Biomass

Dry season biomass 2.96E-02 g C / m2
Wet season biomass 1.97E-02 g C / m2

References   Schroeder et al. 1995Pritchard 1978,  Dalrymple personal communication ,  Jorgensen et al. 1991.


Mass Conversion Factors

dw/ww 0.3
C/dw 0.45

References   Jorgensen et al. 1991.

 

Dry season biomass 2.69E-03 g C / m2
Wet season biomass 1.75E-03 g C / m2



Metabolic Parameters


Production

  P/B ratio

P/B 5

References see Snakes compartment in Cypress wetlands network.

wet season 2.63E-04 g C / m2/ y
dry season 3.26E-04 g C / m2/ y


Respiration

Metabolic rate   0.0262 cc O2 / g h   =   0.113 g C / g wet weight / y

References   Pandian and Vernberg 1987.


Metabolic Rates

wet season 1.65E-02 g C / m2/ y
dry season 2.48E-02 g C / m2/ y

References   Pandian and Vernberg 1987.



Free living metabolism is twice the basal metabolism.

References   Pandian and Vernberg 1987.

wet season 3.22E-03 g C / m2/ y
dry season 4.95E-03 g C / m2/ y


Consumption

Assimilation efficiency = 70%

References   Bjordal 1980,   Bjordal 1985,   Bjordal 1986.


wet season 1.60E-02 g C / m2/ y
dry season 2.45E-02 g C / m2/ y


References  Christian 1992Christian and Luczkovich 1995Kushlan 1977Christian and Luczkovich 1996.



Egestion

Egestion has been calculated using the other parameters : E=C-P-R.

wet season 1.25E-02 g C / m2/ y
dry season 1.92E-02 g C / m2/ y

References   Jorgensen et al. 1991.




Metabolic Ratios


Respiration 0.1756
Production 0.5244
Egestion 0.3000

These ratios represent the proportions of consumption we partitioned to each of the metabolic parameters. They are based on our original calculations and not on the balanced numbers presented throughout these web pages. They should assist you if you are interested in calculating a production value for the top consumers in the system whose balanced production values are zero.




Diets

Plants 40%
Fish 42%
Crocodiles 1%
Snakes 2%
Amphibians 3%
Passerines 1%
Mice and Rats 1%

References  Acevedo et al. 1984,   Plotkin et al. 1993,   Bjordal 1985,   Porter 1972,   Connant and Collins 1991,   Williams 1988,   Meylan 1988, Dalrymple personal communication.