gruiformes

American coot [Fulica americana] and clapper rail [Rallus longirostris].

biomass

population density

Wet Season Density 5.25E-07 ind / m2
Dry Season Density 1.05E-06 ind / m2

references  Bolte and Bass 1980,  Kushlan et al. 1982a,  Browder et al. 1996,  Browder unpublished.

body masses

Clapper rail 297 grams per individual
American coot 642 grams per individual

references  Dunning 1993.

conversion factors

g dw/g ww 0.35
g C/g dw 0.45

references  Jorgensen et al. 1991.

Dry season biomass .1103918E-03 g C / m2
Wet season biomass .5460505E-04 g C / m2



Metabolic parameters

production

  p/b ratio

P/B 0.015

references  Christian 1992,  Kushlan 1977,  Christian and Luczkovich 1995, 1996.

wet season .6481640E-05 g C / m2/ y
dry season .1145613E-04 g C / m2/ y


respiration

Respiration has been calculated using the other parameters : R=C-E-P
wet season .3662358E-02 g C / m2/ y
dry season .7384796E-02 g C / m2/ y


consumption

Consumption is determined by using consumption to biomass ratios:

C/B .24

references  Christian 1992,  Kushlan 1977,  Christian and Luczkovich 1995, 1996.
wet season .4664943E-02 g C / m2/ y
dry season .9406216E-02 g C / m2/ y


egestion

20% of consumption is lost via egestion.

references  Jorgensen 1991.

wet season .9961305E-03 g C / m2/ y
dry season .2009964E-02 g C / m2/ y



diets

invertebrates 70%
small fish 30%

references  Christian and Luczkovich 1995,  Montavecchi and Myers 1995,  Robbins et al. 1966,  Pearson 1923,  Oberholser 1938.