Status of the American crocodile (Crocodylus acutus) at a power plant site in Florida, USA

  • Published source details Brandt L.A., Mazzotti F.J., Wilcox J.R., Barker Jr P.D., Hasty Jr G.L. & Wasilewski J. (1995) Status of the American crocodile (Crocodylus acutus) at a power plant site in Florida, USA. Herpetological Natural History, 3, 29-36.


This study is summarised as evidence for the following.

Action Category

Regulate temperature of water discharged from power plants

Action Link
Reptile Conservation
  1. Regulate temperature of water discharged from power plants

    A study in 1983–1993 in a system of cooling canals for a power plant in Florida, USA (Brandt et al. 1995) reported that the canals were occupied by a population of American crocodiles Crocodylus acutus and that the population grew over the study period. A total of 55 nests were found in the canals, and the number of nest/year increased in the period from 1986–1993 (1983: 3 nests; 1993: 11 nests). The number of non-hatchlings crocodiles increased by an average of 9% each year from 1983–1993, and authors estimated that the populations consisted of 24–30 non-hatchling crocodiles. The Turkey Point power plant site (2,388 ha) had a large canal system acting as a closed loop system for cooling water discharged from the plant. Water temperatures in the canals averaged 38°C, and salinity was 36 ppt. Eight other non-connected canals are also located adjacent to the cooling canals. In 1983–1993, night surveys were conducted of the whole area twice/week to monitor crocodile distributions and survival of hatchlings and juveniles. In 1984–1993, nest surveys, night surveys for hatchlings and periodical day surveys were conducted within the cooling canal system and hatchlings were individually marked.

    (Summarised by: William Morgan)

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 19

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust