Continental Slope and Upper Rise off Western Nova Scotia and Georges Bank

AAPG Bulletin ◽  
1977 ◽  
Vol 61 ◽  
Author(s):  
Elazar Uchupi, R. D. Ballard, J. P.
Keyword(s):  
Nova Scotia ◽  
Continental Slope ◽  
Georges Bank

Dispersal of American Lobsters, Homarus americanus, Tagged Off Southern Nova Scotia

1989 ◽  
Vol 46 (11) ◽  
pp. 1842-1844 ◽  
Author(s):  
Alan Campbell
Keyword(s):  
Nova Scotia ◽  
Continental Shelf ◽  
Continental Slope ◽  
Gulf Of Maine ◽  
Homarus Americanus ◽  
Georges Bank ◽  
Scotian Shelf ◽  
Long Distance ◽  
German Bank ◽  
Long Distance Movement

Of the 5281 American lobsters (Homarus americanus) tagged and released off McNutt Island, South Nova Scotia, during 1983–87, 15.8% were captured within 3 yr of release. Although most immature (99%) and mature (86%) lobsters were caught < 18.5 km from release, mature lobsters moved a greater mean distance (25.8 km) than immature lobsters (3.6 km). Of the lobsters that moved > 30 km eight moved south to the continental slope near Browns Bank and 11 moved west of Cape Sable to the inshore areas of southwestern Nova Scotia, the midshore area of German Bank and offshore to Browns Bank and Georges Bank. This and other studies of tagged lobsters indicate that there is some movement of lobsters east and west of the Cape Sable area, the southern tip of Nova Scotia, suggesting some mixing between lobster stocks off eastern Nova Scotia and southwestern Nova Scotia. The long distance movement and mixing of mature lobsters suggests that attempts to use tagging information in locating biological boundaries between lobster stocks in the Gulf of Maine, adjoining Continental Shelf, Scotian Shelf and inshore areas of southwestern Nova Scotia and southern end of eastern Nova Scotia may be a difficult task.

Further Study of Larval Herring (Clupea harengus L.) in the Bay of Fundy and Gulf of Maine

1960 ◽  
Vol 17 (6) ◽  
pp. 933-942 ◽  
Author(s):  
S. N. Tibbo ◽  
J. E. Henri Legaré
Keyword(s):  
Nova Scotia ◽  
Gulf Of Maine ◽  
Clupea Harengus ◽  
Bay Of Fundy ◽  
Surface Currents ◽  
Georges Bank ◽  
Spawning Grounds ◽  
Southwest Coast ◽  
Spawning Areas ◽  
Northern Edge

Plankton surveys in the Bay of Fundy and Gulf of Maine in 1958 and 1959 indicated that the largest herring spawning areas in this region are on the northern edge of Georges Bank and off the southwest coast of Nova Scotia. The drift of larvae from the spawning grounds as indicated by increasing size and by the direction of non-tidal surface currents suggest that Bay of Fundy herring stocks are supplied chiefly from the Nova Scotia spawnings.

Demersal fish and decapod crustacean fauna of the upper continental slope off Nova Scotia from LaHave to St. Pierre Banks

1988 ◽  
Vol 66 (9) ◽  
pp. 1952-1960 ◽  
Author(s):  
Douglas F. Markle ◽  
Michael J. Dadswell ◽  
Ralph G. Halliday
Keyword(s):  
Nova Scotia ◽  
Transition Zone ◽  
Continental Slope ◽  
Decapod Crustacean ◽  
Fish Fauna ◽  
Demersal Fish ◽  
Depth Range ◽  
Decapod Crustaceans ◽  
Middle Atlantic ◽  
Upper Slope

Four 200-m depth strata were sampled for fish and decapod crustaceans on the upper continental slope (400–1200 m) off Nova Scotia. There was more-or-less continuous replacement of fish fauna with depth. Numerically dominant fishes in the upper two strata (< 800 m) were Sebastes spp., Phycis chesteri, and Glyptocephalus cynoglossus. Predominant fishes in the lower two strata (> 800 m) were Centroscyllium fabricii, Synaphobranchus kaupii, and Coryphaenoides rupestris. Nezumia bairdii was relatively abundant throughout the depth range sampled. The ichthyofauna of the upper slope was similar to that off the Middle Atlantic States and off Newfoundland at comparable depths, but qualitative differences existed in losses of some and additions of other species. Dominant decapod crustaceans in the shallowest stratum (200–400 m) were Pontophilus norvegicus, Plesiopenaeus edwardsianus, and Panalus propinquus. This stratum appeared to be a transition zone between shelf and slope decapod faunas. More species occurred and at higher densities in the deeper strata; predominant were Acanthephyra spp., Pasiphaea tarda, Metacrangon jacqueti, and Sabinea hystrix. The decapod fauna off Nova Scotia is similar to that of the mid-Atlantic Bight but less diverse.

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