An estimation of the carrying capacity of a commercial mussel farm in Newfoundland
Thesis (M.Sc.)--Memorial University of Newfoundland, 2002. Aquaculture Bibliography: leaves 78-89 The mussel industry in Newfoundland began in the early 1980’s. with the number of farms increasing rapidly over the next ten years. By the early I990’s some of the farms had grown quite large, in excess...
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ftmemorialunivdc:oai:collections.mun.ca:theses3/2622 2023-05-15T17:23:32+02:00 An estimation of the carrying capacity of a commercial mussel farm in Newfoundland Coffin, David, 1965- Memorial University of Newfoundland.Aquaculture Programme Canada--Newfoundland and Labrador--Fortune Harbour 2001 xiii, 91 leaves : ill., maps Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses3/id/2622 eng eng Electronic Theses and Dissertations (26.37 MB) -- http://collections.mun.ca/PDFs/theses/Coffin_David.pdf a1562194 http://collections.mun.ca/cdm/ref/collection/theses3/id/2622 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. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Mussel culture--Newfoundland and Labrador--Fortune Harbour Mussels--Size--Newfoundland and Labrador--Fortune Harbour Text Electronic thesis or dissertation 2001 ftmemorialunivdc 2015-08-06T19:17:37Z Thesis (M.Sc.)--Memorial University of Newfoundland, 2002. Aquaculture Bibliography: leaves 78-89 The mussel industry in Newfoundland began in the early 1980’s. with the number of farms increasing rapidly over the next ten years. By the early I990’s some of the farms had grown quite large, in excess of 100 hectares, and the industry was becoming concerned about the carrying capacity of some sites. -- This project was initiated to evaluate the carrying capacity of a commercial mussel farm, owned and operated by Atlantic Ocean Farms Ltd., in Fortune Harbour, Newfoundland. The site operators noted it was taking longer to obtain a market size mussel than it had in previous years. -- Over the two year study period, 1994-1996, mussels suspended at 2 m and 15 m and at opposite ends ofthe site were significantly different in shell length, dry tissue weight, dry shell weight and. in those near the surface, in condition. -- Chlorophyll-a. temperature, and salinity at 2 m were not significantly different at either location although both salinity and temperature at 2 m were significantly different than at 15 m. The site had a low current speed, <2 cm/s. low tidal flushing, and less than optimal chlorophyll-a concentrations with an annual mean of 1.6 µgfL. There were three different carrying capacity models used to determine an appropriate stocking density for the site: tidal volume method, food depletion approach, and food demand versus food supply. The stocking density present on the site, 65 x 10° mussels in 1995, was more than two times the suggested stocking density based of these models. -- It is recommended the operators reduce density of mussels on the site and stock at a rate of approximately 14,000 socks annually or 35 x 106 mussels (132 socks per hectare or 33 xlO4 mussels per hectare). Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) Canada Fortune Harbour ENVELOPE(-55.248,-55.248,49.517,49.517) Newfoundland |
institution |
Open Polar |
collection |
Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
op_collection_id |
ftmemorialunivdc |
language |
English |
topic |
Mussel culture--Newfoundland and Labrador--Fortune Harbour Mussels--Size--Newfoundland and Labrador--Fortune Harbour |
spellingShingle |
Mussel culture--Newfoundland and Labrador--Fortune Harbour Mussels--Size--Newfoundland and Labrador--Fortune Harbour Coffin, David, 1965- An estimation of the carrying capacity of a commercial mussel farm in Newfoundland |
topic_facet |
Mussel culture--Newfoundland and Labrador--Fortune Harbour Mussels--Size--Newfoundland and Labrador--Fortune Harbour |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 2002. Aquaculture Bibliography: leaves 78-89 The mussel industry in Newfoundland began in the early 1980’s. with the number of farms increasing rapidly over the next ten years. By the early I990’s some of the farms had grown quite large, in excess of 100 hectares, and the industry was becoming concerned about the carrying capacity of some sites. -- This project was initiated to evaluate the carrying capacity of a commercial mussel farm, owned and operated by Atlantic Ocean Farms Ltd., in Fortune Harbour, Newfoundland. The site operators noted it was taking longer to obtain a market size mussel than it had in previous years. -- Over the two year study period, 1994-1996, mussels suspended at 2 m and 15 m and at opposite ends ofthe site were significantly different in shell length, dry tissue weight, dry shell weight and. in those near the surface, in condition. -- Chlorophyll-a. temperature, and salinity at 2 m were not significantly different at either location although both salinity and temperature at 2 m were significantly different than at 15 m. The site had a low current speed, <2 cm/s. low tidal flushing, and less than optimal chlorophyll-a concentrations with an annual mean of 1.6 µgfL. There were three different carrying capacity models used to determine an appropriate stocking density for the site: tidal volume method, food depletion approach, and food demand versus food supply. The stocking density present on the site, 65 x 10° mussels in 1995, was more than two times the suggested stocking density based of these models. -- It is recommended the operators reduce density of mussels on the site and stock at a rate of approximately 14,000 socks annually or 35 x 106 mussels (132 socks per hectare or 33 xlO4 mussels per hectare). |
author2 |
Memorial University of Newfoundland.Aquaculture Programme |
format |
Thesis |
author |
Coffin, David, 1965- |
author_facet |
Coffin, David, 1965- |
author_sort |
Coffin, David, 1965- |
title |
An estimation of the carrying capacity of a commercial mussel farm in Newfoundland |
title_short |
An estimation of the carrying capacity of a commercial mussel farm in Newfoundland |
title_full |
An estimation of the carrying capacity of a commercial mussel farm in Newfoundland |
title_fullStr |
An estimation of the carrying capacity of a commercial mussel farm in Newfoundland |
title_full_unstemmed |
An estimation of the carrying capacity of a commercial mussel farm in Newfoundland |
title_sort |
estimation of the carrying capacity of a commercial mussel farm in newfoundland |
publishDate |
2001 |
url |
http://collections.mun.ca/cdm/ref/collection/theses3/id/2622 |
op_coverage |
Canada--Newfoundland and Labrador--Fortune Harbour |
long_lat |
ENVELOPE(-55.248,-55.248,49.517,49.517) |
geographic |
Canada Fortune Harbour Newfoundland |
geographic_facet |
Canada Fortune Harbour Newfoundland |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (26.37 MB) -- http://collections.mun.ca/PDFs/theses/Coffin_David.pdf a1562194 http://collections.mun.ca/cdm/ref/collection/theses3/id/2622 |
op_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. |
_version_ |
1766113032322154496 |