Accession Number:

AD0700263

Title:

PRELIMINARY SURVEY OF THE SUBLITTORAL FLORA OF HALIFAX COUNTY,

Descriptive Note:

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:

1969-04-21

Pagination or Media Count:

13.0

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