Memorial University DAI: Diversity of marine benthic communities from nearshore environments on the Labrador and Newfoundland coasts

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Title	Diversity of marine benthic communities from nearshore environments on the Labrador and Newfoundland coasts
Author	Barrie, John Dickie, 1952-
Description	Thesis (M. Sc.) -- Memorial University of Newfoundland, 1979. Biology
Date	1979
Pagination	xi, 113 leaves : ill.
Subject	Benthos--Newfoundland and Labrador; Benthos--Labrador; Marine animals--Newfoundland and Labrador; Marine animals--Labrador;
Degree	M. Sc.
Degree Grantor	Memorial University of Newfoundland. Dept. of Biology
Discipline	Biology
Language	Eng
Spatial Coverage	Canada--Newfoundland and Labrador
Notes	Bibliography : leaves 82-85 -- Numbering skips page 33
Abstract	The structure and species diversity of benthic communities were examined from samples collected by SCUBA and Shipek grab from sand bottoms on the Labrador coast and in Conception Bay Newfoundland. The effects of the physical environment on the benthic community were studied using the factors of depth, distance offshore, substrate type, substrate diversity and exposure to open water. -- Two communities were found in the areas surveyed; one on finer sands in protected environments characterized by Prionospio steenstrupi and Pectinaria granulata and one on coarser sands in more exposed environments characterized by Diastylis sp. and Nephtys longosetosa. Three species found in Labrador, Laonome kroyeri, Amphiophiura convexa and Onisimus affinis were new records for the Labrador coast. -- Species diversity was found to be greatest at medium exposures, where heterogeneity of the environment was greatest and on substrates with the greatest diversity of grain sizes. Variations in numbers of species between Newfoundland and Labrador and between sites with similar physical conditions was found to be due to non-burrowing species. Attempts were made to explain differences in number of species for sites on the Labrador coast and between Newfoundland and Labrador sites as the basis of differences in exposure, substrate conditions and predation.
Type	Text
Resource Type	Electronic thesis or dissertation
Format	Image/jpeg; Application/pdf
Source	Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier	75009190
Rights	The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
Collection	Electronic Theses and Dissertations
Scanning Status	Completed
PDF File	(54.70 MB) -- http://collections.mun.ca/PDFs/theses/Barrie_JohnDickie.pdf
CONTENTdm file name	293926.cpd