Green water snake (Nerodia cyclopion), Mangrove water snake (Nerodia fasciata compressicauda), Striped swamp snake (Liodytes alleni), Eastern indingo snake (Drymarchon corais), Rat snake (Elaphe corais) , Eastern cottomouth (Agkistridin piscivorus).

  Odum et al. 1982.

  Dalrymple personal communication ,  Jorgensen et al. 1991.

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

Metabolic rate   0.0325 cc O₂ / g / h   =   0.1408 g C / g wet weight / y

  Pandian and Vernberg 1987.

  Jorgensen et al. 1991.

  Pandian and Vernberg 1987.

Free living metabolism is twice the basal metabolism.

  Pandian and Vernberg 1987,   Bennet and Nagy 1977,   Bennet and Gorman 1979.

Annual Consumption: 12.4 kcal / g wet weight / y

  Smith 1976.

Caloric content of food: 5.5 kcal / g dry weight

  Jorgensen et al. 1991.

Grams consumed per gram wet weight: 2.2482

  Jorgensen et al. 1991.

Grams carbon consumed per gram wet weight: 1.0117

  Jorgensen et al. 1991.

Egestion/Consumption ratio: 0.11

  Jorgensen et al. 1991.

  Jorgensen et al. 1991.

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.

  Dalrymple personal communication,   Porter 1972,   Connant and Collins 1991.