Tidal Current Speed and Production of Benthic Macrofauna in the Lower Bay of Fundy

1983 ◽  
Vol 40 (S1) ◽  
pp. s309-s321 ◽  
Author(s):  
D. J. Wildish ◽  
D. Peer
Keyword(s):  
Tidal Currents ◽  
Current Speed ◽  
Bay Of Fundy ◽  
Trophic Groups ◽  
Benthic Production ◽  
Control Sediment ◽  
Modiolus Modiolus ◽  
Wet Biomass ◽  
Horse Mussel ◽  
Settlement Growth

The benthic production of the lower Bay of Fundy, which has an area of 8620 km2, was estimated to be 166.7 × 104 t wet biomass in summer 1978, equivalent to an average benthic production of 193 g∙m−2∙yr−1. Over 88% of the production was by suspension feeders of which the horse mussel, Modiolus modiolus (Linnaeus, 1758), was by far the largest contributor.The geographic distribution of production of the major, soft-sediment, epi- and infaunal trophic groups in the lower Bay of Fundy was in general agreement with the hypothesis that tidal currents are a major determinant of benthic distribution and production in the lower Bay. Tidal currents control sediment dynamics, as well as settlement, growth, and feeding of benthic animals.Key words: benthos, benthic production, trophic groups, lower Bay of Fundy

scholarly journals Mapping seafloor habitats in the Bay of Fundy to assess megafaunal assemblages associated with Modiolus modiolus beds

2021 ◽  
Vol 252 ◽  
pp. 107294
Author(s):  
Brittany R. Wilson ◽  
Craig J. Brown ◽  
Jessica A. Sameoto ◽  
Myriam Lacharité ◽  
Anna M. Redden ◽  
...  
Keyword(s):  
Bay Of Fundy ◽  
Modiolus Modiolus

Movements and survival of sonically tagged farmed Atlantic salmon released in Cobscook Bay, Maine, USA

2006 ◽  
Vol 63 (7) ◽  
pp. 1218-1223 ◽  
Author(s):  
Frederick G. Whoriskey ◽  
Paul Brooking ◽  
Gino Doucette ◽  
Stephen Tinker ◽  
Jonathan W. Carr
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Coastal Zone ◽  
Coastal Region ◽  
Movement Patterns ◽  
Tidal Currents ◽  
Bay Of Fundy ◽  
Wild Salmon ◽  
Receiver Array ◽  
Farmed Atlantic Salmon

Abstract We sonically tagged and released farmed Atlantic salmon (Salmo salar) from a cage site in Cobscook Bay, Maine, USA. The fish were released in January (n = 75) and in April and May (n = 198) 2004 to study their movement patterns and survival and to assess the possibility of recapturing them. Inshore and offshore waters in this region are subject to intense tidal currents. Tagged salmon dispersed >1 km from the cage site within a few hours of their release. Mortality was high within Cobscook Bay and the surrounding coastal region (56% of the winter (January) releases; 84% of the spring (March) releases), probably the result of seal predation. Most surviving fish exited the coastal zone and entered the Bay of Fundy along the routes of the dominant tidal currents, passing through Canadian waters. No tagged fish were detected during the wild salmon spawning season in autumn 2004 in any of the 43 monitored salmon rivers draining into the Bay of Fundy, or during 2005 either in the Magaguadavic River, the site of the hatchery in which the fish were reared to the smolt stage, or by a limited coastal receiver array.

Oxygen isotope composition in Modiolus modiolus aragonite in the context of biological and crystallographic control

2008 ◽  
Vol 72 (2) ◽  
pp. 569-577 ◽  
Author(s):  
M. Cusack ◽  
D. Parkinson ◽  
A. Freer ◽  
A. Pérez-Huerta ◽  
A. E. Fallick ◽  
...  
Keyword(s):  
Biological Control ◽  
Oxygen Isotope ◽  
Environmental Influence ◽  
Isotope Composition ◽  
Seawater Temperature ◽  
Crystal Habit ◽  
Ambient Seawater ◽  
Oxygen Isotope Fractionation ◽  
Modiolus Modiolus ◽  
Horse Mussel

AbstractLiving systems exert exquisite control on all aspects of biomineral production and organic components, including proteins, are essential to this biological control. The protein-rich extrapallial (EP) fluid of bivalve molluscs is a strong candidate for the source of such proteins. Differences in calcium carbonate polymorphs between Modiolus modiolus and Mytilus edulis are concurrent with differences in EP fluid protein profiles. In conjunction with this biological control is the environmental influence which is interpreted using proxies such as δ18O to determine the history of ambient seawater temperature. In the horse mussel, Modiolus modiolus, the difference in oxygen isotope fractionation in the nacreous aragonite and the prismatic aragonite layer results in respective δ18O values of 2.1±0.2% and 2.5±0.2%. These δ18O values result in estimates of ambient seawater of 12.1±0.6°C and 10.2±0.6°C for nacreous and prismatic aragonite, respectively. Electron backscatter diffraction is used here to determine the crystallographic orientation at high spatial resolution, allowing the measurements of stable isotopes to be accurately mapped in terms of shell architecture. These preliminary data suggest that it is essential to account for both polymorph and crystal habit when deciphering ambient seawater temperature using δ18O as a proxy.

Reproduction-related effects of green alga Coccomyxa sp. infestation in the horse mussel Modiolus modiolus

2013 ◽  
Vol 113 (1) ◽  
pp. 86-95 ◽  
Author(s):  
M.A. Vaschenko ◽  
A.L. Kovaleva ◽  
I.G. Syasina ◽  
A.D. Kukhlevsky
Keyword(s):  
Green Alga ◽  
Modiolus Modiolus ◽  
Horse Mussel

Hymedesmia Canadensis (Porifera: Poecilosclerida), a New Species Among New Geographical Records from the Bay of Fundy, New Brunswick, Canada

1998 ◽  
Vol 78 (4) ◽  
pp. 1093-1100 ◽  
Author(s):  
B.K. Ginn ◽  
A. Logan ◽  
M.L.H. Thomas ◽  
R.W.M. Van Soest
Keyword(s):  
New Species ◽  
New Brunswick ◽  
Tidal Currents ◽  
Sponge Species ◽  
Bay Of Fundy ◽  
One New Species ◽  
A New Species

Sixteen sponge species were recorded from Little Letite Passage, an area of highvelocity tidal currents located in the Bay of Fundy near Deer Island, New Brunswick, Canada. Of these 16 species, four species (Myxilla fimbriata, Hymeniacidon heliophila, Hemigellius sp. aff. flagellifer, and Crella rosea) have not previously been recorded from the Bay of Fundy. One new species, Hymedesmia canadensis, is described, based on the presence of a second peculiar chelate microsclere added to the spicule armament.

Observations on the Reproduction of Modiolus Modiolus in Isle of Man Waters

1989 ◽  
Vol 69 (2) ◽  
pp. 373-385 ◽  
Author(s):  
A.K. Jasim ◽  
A.R. Brand
Keyword(s):  
North Carolina ◽  
Bering Sea ◽  
East Coast ◽  
White Sea ◽  
Rock Pools ◽  
Modiolus Modiolus ◽  
Coastal Marine ◽  
The Pacific ◽  
Horse Mussel ◽  
The Bering Sea

The horse-mussel Modiolus modiolus (L.) is a bivalve molluse inhabiting coastal marine environments down to about 200 m, where it may occur in very large communities (Wiborg, 1946; Tebble, 1966; Comely, 1978). It can also be found low in the intertidal zone where it lives in rock pools or in the hold-fasts of Laminaria (Wilson, 1977; Davenport & Kjørsvik, 1982). It is a boreal species. In the Atlantic it ranges from the White Sea to the Bay of Biscay, off Iceland, the Faroes and down the east coast of North America to North Carolina. In the Pacific it occurs from the Bering Sea to Japan and California (Wiborg, 1946). Comparatively little work has been done on Modiolus modiolus, probably because it is of little commercial importance and lives predominantly subtidally in relatively inaccessible environments.

Rule-of-Thumb Formulas for Extending the Versatility of Tidal Current Tables

2000 ◽  
Vol 34 (2) ◽  
pp. 18-21
Author(s):  
Ben J. Korgen
Keyword(s):  
Tidal Current ◽  
Critical Value ◽  
Tidal Currents ◽  
Current Speed ◽  
Time Interval ◽  
Local Conditions ◽  
Near Surface ◽  
Rule Of Thumb ◽  
Safety Margins ◽  
Scientific Results

Four rule-of-thumb formulas have been derived for use in conjunction with existing tidal current tables. For near-surface tidal currents, these formulas yield 1) the percent of time current speed is above a critical value, 2) the percent of time current speed is below a critical value, 3) the time interval when current speed is above a critical value, and 4) the time interval when current speed is below a critical value. The formulas presented require as inputs the near-surface tidal current speed predictions found in standard tidal current tables. Intended for making rough approximations, these formulas may be useful in planning operations for which information on near-surface tidal currents is important. They are not scientific results or predictive models on which anyone’s life should depend. They should be used only with generous safety margins and if possible, with in situ current measurements, since local conditions may vary considerably.

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