Animal-sediment relationships on a subarctic intertidal flat, Pangnirtung Fiord, Baffin Island, Canada

Broad, boulder-strewn intertidal flats border the shores of Pangnirtung Fiord, Baffin Island. These intertidal flats support a benthic biota dominated by bivalves, sedentary polychaetes and phaeophycean algae. The assemblage of organisms inhabits a variety of substrates ranging from muddy sand through gravelly sand and boulders. Six depositional environments defined on the basis of sediment texture, primary sedimentary structures and their …