02496nas a2200289 4500008004100000245010900041210006900150300001200219490000700231520163100238653001901869653001601888653002801904653001601932653001701948653001701965653001601982653001501998653001102013100001502024700002002039700002002059700001802079700002002097700001902117856007002136 1993 eng d00aLate-Glacial Pollen, Macrofossils and Fish Remains in Northeastern U.S.A.--The Younger Dryas Oscillation0 aLateGlacial Pollen Macrofossils and Fish Remains in Northeastern a597-6120 v123 a
The late-glacial environmental histories of Allamuchy Pond, New Jersey and Linsley Pond, Connecticut are reconstructed from pollen, macrofossil and fish scale remains. Accelerator mass spectrometry (AMS) 14C dating of seeds and needles indicates that the first organic deposition, evidenced by fossil Picea (spruce) needles, occurred approximately 12,400 BP. A major regional warming began in the northeastern United States at this time, correlative with the Bølling/Allerød warming of Europe and Greenland. The increase in Quercus (oak) pollen and presence of Pinus strobus (white pine) needles demonstrates the magnitude of warming reached at about 11,000 BP. The subsequent decline of thermophilous species and increase in boreal Picea, Abies (fir), Larix (larch), Betula papyrifera (paper birch) and Alnus (alder) from 10,800-10,000 BP was a regional vegetational reversal. Thus we find a North American expression of the Younger Dryas with a mean annual temperature depression of 3–4° C. The subsequent classical southern New England pine pollen zone ‘B’ and Pinus strobus macrofossils signalled a return to warmer conditions at approximately 10,000 BP, regionally, within approximately 50–100 years. A large increase in Quercus follows. This study is unique in documenting a continuous late-glacial record of fish remains from Allamuchy Pond, New Jersey sediments, indicating that members of the families Centrarchidae (sunfish), Salmonidae (trout), Percidae (perch) and Cyprinidae (minnow) were regionally present.
10aAllamuchy Pond10aConnecticut10aenvironmental histories10afish scales10alate-glacial10aLinsley Pond10amacrofossil10aNew Jersey10apollen1 aPeteet, D.1 aDaniels, R., A.1 aHeusser, L., E.1 aVogel, J., S.1 aSouthon, J., R.1 aNelson, D., E. uhttp://www.sciencedirect.com/science/article/pii/0277379193900024