W.F. Stout | Geology Reports

USGS1980

Distribution, species abundance, and nesting-site use of Atlantic coast colonies of herons and their allies

In 1975 and 1976, eight teams of investigators located 262 colonies of nesting herons and their allies along the Atlantic coast from Florida to Maine. Fourteen species were found in Florida, numbers decreasing to seven in Maine. Colonies censused in the extreme south and north of the study area were lower in number of species and number of adults than those in the intermediate area. More than 90% of the colony sites surveyed in 1975 were active in 1976. The total number of nesting adults per colony, number of species per colony, and number of nesting adults of each species per colony in 1976 were significantly correlated with their respective values for 1975. Abandoned and new colonies appeared to be satellites of nearby reused colonies; they had fewer individuals and species than reused colonies and were closer to reused colonies than reused colonies were to each other.

Atlantic coast↗

USGS1980

Wildlife hazards from Furadan 3G applications to rice in Texas

Mortality of birds, fish, frogs, crayfish, earthworms, and nontarget insects occurred in rice fields after treatments of Furadan 3G granules in 3 Texas counties in 1970 and 1973-75. Three western sandpipers ( Ereunetes mauri ), 1 pectoral sandpiper ( Erolia melanotos ), and 2 red-winged blackbirds ( Agelaius phoeniceus ) were found dead or moribund between 17 and 24 hours after treatment. Cricket frogs ( Acris crepitans blanchardi ) were intoxicated 15 minutes post-treatment, and mosquito fish ( Gambusia affinis ) showed effects 1 hour post-treatment. Mortality of mosquito fish, Gulf menhaden (Brevoortia patronus), Atlantic croaker (Micropogon undulatus), and European carp ( Cyprinus carpio ) usually occurred between 24 and 28 hours after treatment. Mortality of frogs, crayfish, and nontarget insects generally occurred in rice field water between 1 and 45 hours after treatment. Mortality of earthworms in soil persisted for 52 hours. As a replacement for aldrin in Texas rice fields, Furadan 3G appeared to cause less mortality of birds than aldrin, but Furadan 3G was toxic to birds, fish, and invertebrates.

Texas↗