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Fireworks Warning COURT HOUSE - A warning on the use of fireworks has been issued by Police Chief Edward Hansen of Middle Township. Hansen points out that only paper and plastic caps for use in cap pistols are legal. All other fireworks,, such as firecrackers, Roman candles, aerial rockets are illegal to sell and/or possess in New Jersey. Sellers of illegal; fireworks face fines and/or imprisonment, Hansen warns. .

Wetlands to Host Research Testing

STONE HARBOR - Two sure signs of summer at the Wetlands Institute and museum are the return of mating ospreys to their nest next to the salt marsh trail and the reappearance of Dr. Vince Guida in the labs. The institute is now open daily except Sundays and Mondays from 10 a.m. to 4 p.m., and offers exhibits, a nature bookshop, observation tower and a salt marsh trail. There is no charge for visits to the building and grounds. Guida, a research scientist at Lehigh University in Pennsylvania, has returned to his residency above the laboratories as director for the institute. He will oversee several research projects this summer

before returning to Lehigh this fall. IN A SEARCH for the solution to commercial seafood wastewater disposal, he will build several marsh mc/aels planted with cord grass in troughs. These minimarshes will be inundated with seawater on a tidal schedule and will be subjected to wash water from shucking and processing clams. The object is to determine the ability of salt marsh to absorb the wastewater without damage. Currently, some processing plants have dumped such water into nearby bays. "Stench is a minor problem of this practive," says Guida. "The real damage with bay or channel dumping is that the wastewater is rich in wdaicwaici so 111

nutrients which promote algae and bacterial growth that reduce oxygen and endanger fish and other marine life." HE HOPES co prove that disposing of seafood wastewater in grassy marshes will solve the problem. The initial study this summer will provide favorable clues for a major investigation to be funded, he hopes, by a grant next year. Guida says that one of several Lehigh students will also be working on a sedimentation project in Great Sound behind Avalon and Stone Harbor. He will study how different particles settle from the seawater to the bottom, and especially the role that fecal pellets play in this sedimentation. The project is part of a larger study at Great Sound which is looking at the movement of sand and silt by tidal currents as they fill in the coastal bays behind barrier islands such as Ocean City, Avalon, IStone Harbor and the Wildwoods. GUIDA WILL be continuing other research including work in marsh pannes, which are tidal isolated ponds in salt mac - shes. Because summer sun causes evaporation of water, the pannes have high salinity and become an important habitat for two species of minnows. These tiny fish are the favorite food of egrets and heroris. Guida is examining what fish and birds eat in these unqiue habitats in hopes of unlocking secrets of the salt marsh food chain. With a doctorate in marine science from North Carolina State University in Raleigh, Guida has been Lehigh's director at the institute since 1978 and a staff scientist at the university since 1977. He began there with post doctorate work at Lehigh's Institute for Pathobiology, where he studied tropical parasites which affect humans. While the Wetlands Institute aod museum is open to the public, tours of the laboratories are offered only once a y.car during the New Jersey Wings 'n Water Festival, a two-county institute benefit event, scheduled for Sept. 15 and 16 this year. For further information, phone 368-1211.

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