Philadelphia Academy of Natural Sciences

DuPont began by commissioning a comprehensive inventory of the animals living in the river—a pioneering example of what is now called a biota survey. Two complete baseline surveys were carried out by the Philadelphia Academy of Natural Sciences, a year apart, and that work was repeated 18 months after the plant opened. At the mouth of the river, where shellfish were an important resource, the inventory was taken every six months. 

The study site was a Starling nesting colony of about 100 nest boxes located at the Stroud Water Research Center of the Philadelphia Academy of Natural Sciences, Avondale, Pennsylvania. The habitat lies within the White Clay Creek watershed and is characterized by a patchwork of old fields (maintained via semi-annual mowing), pastureland, and secondary growth woodland. ... 

Lund, R. and Grogan, E.D. (1997b) Cochliodonts from the Mississippian Bear Gulch Limestone (Heath Formation Big Snowy Group Chesterian) of Montana and the relationships of the Holocephali , in Wolberg, D.L., Stump, E., and Rosenberg, G.D. (eds) Dinofest International, Symposium Proceedings, Philadelphia Philadelphia Academy of Natural Sciences. 

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