Modeled transport of winter flounder larvae spawned in coastal waters of the Gulf of Maine

2015 ◽  
Vol 24 (5) ◽  
pp. 430-444 ◽  
Author(s):  
Gregory DeCelles ◽  
Geoffrey Cowles ◽  
Chang Liu ◽  
Steven Cadrin
Keyword(s):  
Coastal Waters ◽  
Gulf Of Maine ◽  
Winter Flounder

Relative Influences of Riverine and Macroalgal Phenolic Materials on UV Absorbance in Temperate Coastal Waters

1983 ◽  
Vol 40 (8) ◽  
pp. 1258-1263 ◽  
Author(s):  
David J. Carlson ◽  
Lawrence M. Mayer
Keyword(s):  
Molecular Weight ◽  
Water Temperature ◽  
High Molecular Weight ◽  
Coastal Waters ◽  
Seasonal Changes ◽  
Gulf Of Maine ◽  
Uv Absorbance ◽  
Estuarine Mixing ◽  
Molecular Weight Fractions

Seasonal changes in profiles of both UV absorbance and phenolic material versus salinity were observed in some estuarine and coastal waters of the Gulf of Maine. Profiles of riverine UV-absorbent and phenolic materials were seasonally invariant, with slight losses from high molecular weight fractions during estuarine mixing. In estuaries containing significant populations of fucoid macroalgae, exudation by the macroalgae increased levels of these parameters by as much as threefold. These increases showed a strong seasonal pulsing, following water temperature. This pulsing was detectable in seasonal transects of adjacent shelf waters.

Stratification and Mixing in Coastal Waters of the Western Gulf of Maine during Summer

1968 ◽  
Vol 25 (12) ◽  
pp. 2609-2621 ◽  
Author(s):  
Edward M. Hulburt
Keyword(s):  
High Temperatures ◽  
Coastal Waters ◽  
Low Temperatures ◽  
Gulf Of Maine ◽  
Cold Water ◽  
Vertical Mixing ◽  
Tidal Mixing ◽  
Western Coast ◽  
Surface Temperatures ◽  
Light Wind

In the summers of 1966 and 1967, very low surface temperatures, about 11 C, and weakly stratified water occurred along the western coast of the Gulf of Maine at Cape Nedick, in the Sheepscot River, and off Vinalhaven Island at the mouth of Penobscot Bay. Moderately low temperatures, about 13 C, were found often between the islands of Casco Bay. These low temperatures indicate an active vertical mixing, associated with tidal currents, that transports water warmed at the surface downward and cold water upward.Where tidal mixing is reduced, offshore from Cape Ann and in the landward confines of Casco Bay, surface temperatures over 17 C and pronounced stratification occurred. When these high temperatures were observed off Cape Ann, the weather was sunny and calm, or a light wind caused very little mixing. Within Casco Bay temperatures of 17 C or more were observed during a period when fogs were prevalent, allowing heating in clear spells in the daytime and a minimum of cooling at night.

scholarly journals Do environmental factors affect recruits per spawner anomalies of New England groundfish?

2005 ◽  
Vol 62 (7) ◽  
pp. 1394-1407 ◽  
Author(s):  
Jon Brodziak ◽  
Loretta O'Brien
Keyword(s):  
Environmental Factors ◽  
New England ◽  
Gulf Of Maine ◽  
Generalized Additive Models ◽  
Additive Models ◽  
Winter Flounder ◽  
Water Volume ◽  
Melanogrammus Aeglefinus ◽  
Georges Bank ◽  
Yellowtail Flounder

Abstract We evaluated the influence of environmental factors on recruits per spawner (RS) anomalies of 12 New England groundfish stocks. Nonparametric methods were used to analyse time-series of RS anomalies derived from stock-recruitment data in recent assessments. The 12 stocks occur in three geographic regions: the Gulf of Maine (cod Gadus morhua, redfish Sebastes fasciatus, winter flounder Pseudopleuronectes americanus, American plaice Hippoglossoides platessoides, witch flounder Glyptocephalus cynoglossus, and yellowtail flounder Limanda ferruginea), Georges Bank (cod, haddock Melanogrammus aeglefinus, and yellowtail flounder), and Southern New England (summer flounder Paralichthys dentatus, yellowtail flounder, and winter flounder). Randomization tests were applied to detect years when RS anomalies were unusually high or low for comparison with oceanographic conditions such as the 1998 intrusion of Labrador Subarctic Slope water into the Gulf of Maine region. Randomization methods were also used to evaluate the central tendency and dispersion of all RS anomalies across stocks. Average RS anomalies were significantly positive in 1987 across stocks and regions, indicating that environmental forcing was coherent and exceptional in that year. Responses of RS values of individual stocks to lagged and contemporaneous environmental variables such as the North Atlantic Oscillation (NAO) index, water temperature, windstress, and shelf water volume anomalies were evaluated using generalized additive models. Overall, the NAO forward-lagged by 2 years had the largest impact on RS anomalies. This apparent effect is notable because it could provide a leading indicator of RS anomalies for some commercially exploited stocks. In particular, the three primary groundfish stocks on Georges Bank (cod, haddock, and yellowtail flounder) all exhibited positive RS anomalies when the NAO2 variable was positive.

Coastal spawning by winter flounder and a reassessment of Essential Fish Habitat in the Gulf of Maine

2013 ◽  
Vol 141 ◽  
pp. 118-129 ◽  
Author(s):  
Elizabeth A. Fairchild ◽  
Laughlin Siceloff ◽  
W. Huntting Howell ◽  
Bill Hoffman ◽  
Michael P. Armstrong
Keyword(s):  
Gulf Of Maine ◽  
Fish Habitat ◽  
Winter Flounder ◽  
Essential Fish Habitat
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