scholarly journals A review of the fishes and fisheries of Minas Basin and Minas Passage, Nova Scotia, and their potential risk from tidal power development

2021 ◽  
Vol 51 (1) ◽  
pp. 39
Author(s):  
Michael J. Dadswell ◽  
Roger A. Rulifson
Keyword(s):  
Nova Scotia ◽  
Cold Water ◽  
Atlantic Coast ◽  
Taxonomic Diversity ◽  
Seasonal Occurrence ◽  
Bay Of Fundy ◽  
Species Status ◽  
Power Development ◽  
Tidal Power ◽  
Potential Impact

A total of 85 species of fish are known or suspected from Minas Basin and Minas Passage, Nova Scotia, Canada. This systematic review details their seasonal occurrence, habitat, abundance, migratory behavior, fisheries and potential impact from tidal power development. The fish assemblage is a mixture of species common to the Bay of Fundy and the Atlantic coast of Nova Scotia as well as numerous warm- and cold-water visitors seldom found elsewhere in Canada. Minas Basin fisheries exploit some species especially those that migrate through the Basin during summer. Fishes were captured or observed using angling, seines, benthic long lines, drift and fixed gill nets, intertidal fish weirs, bottom trawls and sightings while on vessels. Fishes are categorized with respect to their taxonomic diversity, seasonal occurrence, status, fisheries and the potential impact from tidal lagoons and propeller turbines resulting from development of tidal power in Minas Basin and Minas Passage. Keywords: Bay of Fundy, habitat, species status, propeller turbines, taxonomic relationship, tidal lagoons.

Integration of Ecological and Engineering Aspects in Planning Large Scale Tidal Power Development in the Bay of Fundy, Canada

1984 ◽  
Vol 16 (1-2) ◽  
pp. 281-295 ◽  
Author(s):  
Donald C Gordon
Keyword(s):  
Large Scale ◽  
Feasibility Studies ◽  
Bay Of Fundy ◽  
Final Decision ◽  
Power Development ◽  
Tidal Power ◽  
History Of ◽  
Scientists And Engineers ◽  
The Many ◽  
University Scientists

Large-scale tidal power development in the Bay of Fundy has been given serious consideration for over 60 years. There has been a long history of productive interaction between environmental scientists and engineers durinn the many feasibility studies undertaken. Up until recently, tidal power proposals were dropped on economic grounds. However, large-scale development in the upper reaches of the Bay of Fundy now appears to be economically viable and a pre-commitment design program is highly likely in the near future. A large number of basic scientific research studies have been and are being conducted by government and university scientists. Likely environmental impacts have been examined by scientists and engineers together in a preliminary fashion on several occasions. A full environmental assessment will be conducted before a final decision is made and the results will definately influence the outcome.

COD MOVEMENTS ON THE CANADIAN ATLANTIC COAST

1933 ◽  
Vol 8 (1) ◽  
pp. 433-458 ◽  
Author(s):  
R. A. McKENZIE
Keyword(s):  
Nova Scotia ◽  
Prince Edward Island ◽  
Cold Water ◽  
Atlantic Coast ◽  
Summer Season ◽  
Warm Water ◽  
Early Winter ◽  
Cape Breton ◽  
Inshore Waters ◽  
Glace Bay

From 1925 to 1933 inclusive, during the summer season, 8,774 cod were tagged at eight points along the coasts of Nova Scotia and Prince Edward Island and eight per cent were recaptured during the following years, none after the sixth.Cod performing a restricted migration (less than 40 kilometres) were found to be in the majority off Halifax from July to September and off Shelburne in June and August in certain areas.Near Seal island in June, off Shelburne in July and September, and off Glace Bay in July and August, the majority of the cod were found to show orderly extended migrations. In the first two instances this movement was shoreward in the summer and seaward to about 130 metres in the early winter. The Glace Bay cod moved from the offshore banks just west of the Laurentian channel to the Cape Breton vicinity in the summer, returning early in the winter.A small percentage of the various stocks of cod performed roving migrations.The complete forsaking of the Cape Breton district for the offshore banks in the winter is attributed to the unfavourable ice cold water, while south-westward of Canso the movement off shore is thought to be caused by the very warm water inshore in the autumn and continued through the influence of the cold inshore waters several months later.As they grow older, the Shelburne cod remain progressively a little farther off shore when they move to shoal water each summer.

Seasonal occurrence of waterbirds in Minas Passage, Bay of Fundy, Nova Scotia, Canada, 2010 to 2012

2021 ◽  
Vol 135 (2) ◽  
pp. 124-141
Author(s):  
Patrick L. Stewart ◽  
Fulton L. Lavender ◽  
Heather A. Levy
Keyword(s):  
Nova Scotia ◽  
Atlantic Coast ◽  
Early Summer ◽  
Seasonal Abundance ◽  
Bay Of Fundy ◽  
Somateria Mollissima ◽  
Migration Pathway ◽  
Cepphus Grylle ◽  
Surf Scoter ◽  
Abundance And Diversity

We determined patterns of seasonal abundance and diversity of seabirds and coastal waterfowl in Minas Passage, Bay of Fundy, Nova Scotia, Canada using quantitative, shore-based point surveys from mid-March to late August and mid-October to December 2010 to 2012. This area experiences the world’s highest tides and greatest tidal currents. We showed that species and seasonal cycles of waterbirds in Minas Passage reflect patterns typical of the inner Bay of Fundy and the northeast Atlantic coast of North America. The study highlights the importance of Minas Passage as an important local migration pathway for waterbirds including Black Scoter (Melanitta americana) and Red-throated Loon (Gavia stellata) passing through the Bay of Fundy. Large numbers of sea ducks (Black Scoter, Surf Scoter [Melanitta perspicillata], White-winged Scoter (Melanitta fusca), and Long-tailed Duck [Clangula hyemalis]), and Red-throated Loon were observed at the site in spring and fall, corresponding to known peak movements elsewhere in the Bay of Fundy. Fewest species and smallest abundances of waterbirds overall occurred in summer and early winter, while most species and largest abundances occurred in April-May and early November. Of the 46 species observed, resident breeders such as Herring Gull (Larus argentatus), Great Black-backed Gull (Larus marinus), Common Eider (Somateria mollissima), Black Guillemot (Cepphus grylle), and Double-crested Cormorant (Phalacrocorax auritus), were most abundant in spring to early summer during breeding and migrants including Red-throated Loon, Black Scoter, Ring-billed Gull (Larus delawarensis), Surf Scoter, and Northern Gannet (Morus bassanus) occurred in moderate numbers during migration periods.

scholarly journals First visual record of rare purple-colored dogwhelks (Nucella lapillus) on the Atlantic coast of Nova Scotia, Canada

F1000Research ◽  
2017 ◽  
Vol 5 ◽  
pp. 2435
Author(s):  
Sonja M. Ehlers ◽  
Julius A. Ellrich
Keyword(s):  
Nova Scotia ◽  
Field Experiments ◽  
Atlantic Coast ◽  
Rocky Intertidal ◽  
Bay Of Fundy ◽  
Nucella Lapillus ◽  
Shell Color ◽  
The North ◽  
Intertidal Gastropod ◽  
Visual Record

The dogwhelk Nucella lapillus is a rocky intertidal gastropod of the North Atlantic coast. Individual shell color varies. Common colors range between white and brown, with darker dogwhelks being more affected by heat stress than lighter-colored conspecifics. Other reported shell colors are purple, black, mauve, pink, yellow, and orange from UK coasts, red and gray from the Bay of Fundy coast of New Brunswick and Nova Scotia (Canada), and purple, black, gray, yellow, and orange from the coasts of Maine and Massachusetts (USA), with purple being considered as a rare color. On the Atlantic coast of Nova Scotia, dogwhelks are active from April until November, but information on dogwhelk shell color is missing for this coast. On 16 June 2016, we found two purple-colored dogwhelks in the mid-to-high intertidal zone of a moderately wave-exposed rocky shore near Duncans Cove, on the Atlantic coast of Nova Scotia while collecting dogwhelks (n= 1000) during low tide for manipulative field experiments. All other dogwhelks collected on that day were of common white and brown colors. During earlier dogwhelk collections in Atlantic Nova Scotia (between 2011-2013) and field surveys in Duncans Cove (between 2014-2016), we did not find any purple-colored dogwhelks, indicating the rareness of this color in that region. Apparently, our observations provide the first visual record of rare purple-colored dogwhelks on the Atlantic coast of Nova Scotia, Canada.

scholarly journals First visual record of rare purple dogwhelks (Nucella lapillus) on the Atlantic coast of Nova Scotia, Canada

F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 2435
Author(s):  
Sonja M. Ehlers ◽  
Julius A. Ellrich
Keyword(s):  
Nova Scotia ◽  
Field Experiments ◽  
Atlantic Coast ◽  
Rocky Intertidal ◽  
Bay Of Fundy ◽  
Nucella Lapillus ◽  
Shell Color ◽  
The North ◽  
Intertidal Gastropod ◽  
Visual Record

The dogwhelk Nucella lapillus is a rocky intertidal gastropod of the North Atlantic coast. Individual shell color varies. Common colors range between white and brown, with darker dogwhelks being more affected by heat stress than lighter-colored conspecifics. Other reported shell colors are black, mauve, pink, yellow, and orange from European coasts, red and grey from the Bay of Fundy coast of New Brunswick and Nova Scotia (Canada), and purple, black, gray, yellow, and orange from the coasts of Maine and Massachusetts (USA), with purple being considered as a rare color. On the Atlantic coast of Nova Scotia, dogwhelks are active from April until November, but information on dogwhelk shell color is missing for this coast. On 16 June 2016, we found two purple dogwhelks in the mid-to-high intertidal zone of a moderately wave-exposed rocky shore near Duncans Cove, on the Atlantic coast of Nova Scotia while collecting dogwhelks (n= 1000) for manipulative field experiments. All other dogwhelks collected on that day were of common white and brown colors. During earlier dogwhelk collections in Atlantic Nova Scotia (between 2011-2013) and field surveys in Duncans Cove (between 2014-2016), we did not find any purple dogwhelks, indicating the rareness of this color in that region. Interestingly, the purple dogwhelks were detected on a relatively cool day (12.3 ± 0.4 °C, mean ± se, n= 96 temperature measurements) compared to the intertidal temperatures of all other survey days (≥ 18.2 ± 0.5 °C), suggesting that purple dogwhelks may find it less thermally stressful to venture out of crevices and macroalgal cover under relatively cool temperatures. Our observations provide the first visual record of rare purple dogwhelks on the Atlantic coast of Nova Scotia, Canada.

Normal Modes of the Bay of Fundy and Gulf of Maine

1974 ◽  
Vol 11 (4) ◽  
pp. 549-556 ◽  
Author(s):  
Christopher Garrett
Keyword(s):  
Mode Shape ◽  
Numerical Scheme ◽  
Gulf Of Maine ◽  
Normal Modes ◽  
Bay Of Fundy ◽  
Power Development ◽  
Tidal Power ◽  
Tidal Period ◽  
Damping Rate ◽  
Resonant Period

Platzman's (1972) numerical scheme has been used to study the inviscid normal modes of the Bay of Fundy and Gulf of Maine for a variety of boundary conditions. The results support the contention that the resonant period associated with the lowest mode is greater than the M2 tidal period. Calculation of a damping rate from the inviscid solution gives a dissipative Q of 3.3 for the system, though this is probably an underestimate. Changes of period and normal mode shape due to changes in geometry at the head of the Bay of Fundy are investigated and some rather uncertain implications for tidal power development are discussed.

Canadian Atlantic Oyster Drills (Urosalpinx) — Distribution and Industrial Importance

1969 ◽  
Vol 26 (5) ◽  
pp. 1121-1131 ◽  
Author(s):  
J. C. Medcof ◽  
M. L. H. Thomas
Keyword(s):  
Nova Scotia ◽  
Atlantic Coast ◽  
Distribution Patterns ◽  
Cape Cod ◽  
Critical Examination ◽  
Bay Of Fundy ◽  
Field Collection ◽  
Urosalpinx Cinerea ◽  
Occurrence Records

Distribution of drills (Urosalpinx cinerea Say) was worked out from critical examination of museum holdings, from assessment of published and several unpublished occurrence records, and from field collection in new areas. Drills occur in warm inlets on the Nova Scotia coast of the Bay of Fundy, possibly in one inlet of the outer Atlantic coast of Nova Scotia, and in several inlets of the southwestern Gulf of St. Lawrence. Only in the last were oysters found with the drills and there is only one record of serious damage to young oysters. Distribution patterns suggest that drills reached the Gulf of St. Lawrence by spreading eastward from Cape Cod, through the Bay of Fundy, then through a channel that is believed to have connected the Bay and the Gulf. There is no evidence of long-term restriction of distributional range since that pioneering period, but local distribution seems to have contracted so that now drills occupy only the warmest parts of their range. In the last 30 years, drill abundance in some important oyster-producing sections of the Gulf of St. Lawrence has decreased, perhaps because of low sea temperatures. Old colonies persist but do little damage in oyster areas. No new colonies seem to have sprung up. In our area the species seems to be bordering on extinction. Drills are not a threat to the Canadian east-coast oyster industry.

scholarly journals First visual record of rare purple dogwhelks (Nucella lapillus) on the Atlantic coast of Nova Scotia, Canada

2016 ◽  
Author(s):  
Sonja M. Ehlers ◽  
Julius A. Ellrich
Keyword(s):  
Nova Scotia ◽  
Field Experiments ◽  
Atlantic Coast ◽  
Rocky Intertidal ◽  
Bay Of Fundy ◽  
Nucella Lapillus ◽  
Shell Color ◽  
The North ◽  
Intertidal Gastropod ◽  
Visual Record

The dogwhelk Nucella lapillus is a rocky intertidal gastropod of the North Atlantic coast. Individual shell color varies. Common colors range between white and brown, with darker dogwhelks being more affected by heat stress than lighter-colored conspecifics. Other reported shell colors are black, mauve, pink, yellow, and orange from European coasts, red and grey from the Bay of Fundy coast of New Brunswick and Nova Scotia (Canada), and purple, black, gray, yellow, and orange from the coasts of Maine and Massachusetts (USA), with purple being considered as a rare color. On the Atlantic coast of Nova Scotia, dogwhelks are active from April until November, but information on dogwhelk shell color is missing for this coast. On 16 June 2016, we found two purple dogwhelks in the mid-to-high intertidal zone of a moderately wave-exposed rocky shore near Duncans Cove, on the Atlantic coast of Nova Scotia while collecting dogwhelks (n= 1000) for manipulative field experiments. All other dogwhelks collected on that day were of common white and brown colors. During earlier dogwhelk collections in Atlantic Nova Scotia (between 2011-2013) and field surveys in Duncans Cove (between 2014-2016), we did not find any purple dogwhelks, indicating the rareness of this color in that region. Interestingly, the purple dogwhelks were detected on a relatively cool day (12.3 ± 0.4 °C, mean ± se, n= 96 temperature measurements) compared to the intertidal temperatures of all other survey days (≥ 18.2 ± 0.5 °C), suggesting that purple dogwhelks may find it less thermally stressful to venture out of crevices and macroalgal cover under relatively cool temperatures. Our observations provide the first visual record of rare purple dogwhelks on the Atlantic coast of Nova Scotia, Canada.

scholarly journals First visual record of rare purple dogwhelks (Nucella lapillus) on the Atlantic coast of Nova Scotia, Canada

2016 ◽  
Author(s):  
Sonja M. Ehlers ◽  
Julius A. Ellrich
Keyword(s):  
Nova Scotia ◽  
Field Experiments ◽  
Atlantic Coast ◽  
Rocky Intertidal ◽  
Bay Of Fundy ◽  
Nucella Lapillus ◽  
Shell Color ◽  
The North ◽  
Intertidal Gastropod ◽  
Visual Record

The dogwhelk Nucella lapillus is a rocky intertidal gastropod of the North Atlantic coast. Individual shell color varies. Common colors range between white and brown, with darker dogwhelks being more affected by heat stress than lighter-colored conspecifics. Other reported shell colors are black, mauve, pink, yellow, and orange from European coasts, red and grey from the Bay of Fundy coast of New Brunswick and Nova Scotia (Canada), and purple, black, gray, yellow, and orange from the coasts of Maine and Massachusetts (USA), with purple being considered as a rare color. On the Atlantic coast of Nova Scotia, dogwhelks are active from April until November, but information on dogwhelk shell color is missing for this coast. On 16 June 2016, we found two purple dogwhelks in the mid-to-high intertidal zone of a moderately wave-exposed rocky shore near Duncans Cove, on the Atlantic coast of Nova Scotia while collecting dogwhelks (n= 1000) for manipulative field experiments. All other dogwhelks collected on that day were of common white and brown colors. During earlier dogwhelk collections in Atlantic Nova Scotia (between 2011-2013) and field surveys in Duncans Cove (between 2014-2016), we did not find any purple dogwhelks, indicating the rareness of this color in that region. Interestingly, the purple dogwhelks were detected on a relatively cool day (12.3 ± 0.4 °C, mean ± se, n= 96 temperature measurements) compared to the intertidal temperatures of all other survey days (≥ 18.2 ± 0.5 °C), suggesting that purple dogwhelks may find it less thermally stressful to venture out of crevices and macroalgal cover under relatively cool temperatures. Our observations provide the first visual record of rare purple dogwhelks on the Atlantic coast of Nova Scotia, Canada.

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