Accession Number : AD0700263

Title :   PRELIMINARY SURVEY OF THE SUBLITTORAL FLORA OF HALIFAX COUNTY,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA HALIFAX (NOVA SCOTIA) ATLANTIC REGIONAL LAB

Personal Author(s) : Edelstein,T. ; Craigie,J. S. ; McLachlan,J.

Report Date : 21 APR 1969

Pagination or Media Count : 13

Abstract : During the autumn of 1965 and the summer of 1966, observations and sublittoral collections to a depth of 40 m were made of the benthic vegetation of the Atlantic coast of Halifax County. A total of 166 species (exclusive of crustose corallines) were recorded and distributed as 72 Rhodophyceae, 66 Phaeophyceae, 26 Chlorophyceae, 1 Xanthophyceae, and 1 Chrysophyceae. Thirty-three of these species have been recorded as new to Nova Scotia. Very few of the macrophytic species collected are exclusively sublittoral. Three distinct vegetational associations, each characteristic of a particular depth range, were recognized. From the sublittoral fringe to a depth of about 15 m, a Laminaria-Desmarestia association occurs. Below 10 m the flora is dominated by an Agarum-Ptilota association, and at 30-40 m a Phyllophora-Polysiphonia association is present. In some species morphological variations were correlated with depth. (Author)

Descriptors :   (*MARINE BIOLOGY, NOVA SCOTIA), (*ALGAE, ATLANTIC OCEAN), OCEAN BOTTOM SAMPLING, DIVING, CLASSIFICATION, ABUNDANCE, SITE SELECTION, CANADA

Subject Categories : Biology
      Biological Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE