Southeastward shorebird migration over Nova Scotia and New Brunswick in autumn: a radar study

1979 ◽  
Vol 57 (1) ◽  
pp. 107-124 ◽  
Author(s):  
W. John Richardson
Keyword(s):  
High Pressure ◽  
New Brunswick ◽  
Far East ◽  
Late Summer ◽  
Bay Of Fundy ◽  
Magnetic Disturbance ◽  
Fair Weather ◽  
Wind Drift ◽  
Cold Fronts ◽  
K Index

Shorebirds departed over the Atlantic intermittently by night and (in lesser numbers) day in late summer and early autumn. Migrations were broad-front and usually began inland (including Bay of Fundy), often 1–2 h before sunset. Tracks were straight, with daily means of 110–170° (overall mean 134°). About 69% were flying on tracks directed too far east to reach South America without a course change; the roles of wind drift and heading adjustments in effecting this course change are uncertain. Ground speeds were 74 ± SD 17 km/h; altitudes were often high (mean 2.0 km, 5% of flocks above 4.4 km, highest 6.65 km). Many departed with W–NW winds and fair weather behind cold fronts or E or N of high pressure areas, but some took off ahead of or caught up with and penetrated cold fronts. Mean tracks were correlated with wind direction, but were rarely downwind. Their deviation from downwind was unrelated to visibility, cloud, or magnetic disturbance (K index). Dispersion of tracks did not change consistently during nights or days and was unrelated to wind or K index. Dispersion at night was slightly greater in inclement than fair weather.

Feeding ecology of migrating Red-necked Phalaropes (Phalaropus lobatus) in the Quoddy region, New Brunswick, Canada

1985 ◽  
Vol 63 (5) ◽  
pp. 1062-1067 ◽  
Author(s):  
F. M. Mercier ◽  
D. E. Gaskin
Keyword(s):  
New Brunswick ◽  
Feeding Ecology ◽  
Late Summer ◽  
Calanus Finmarchicus ◽  
Bay Of Fundy ◽  
Zooplankton Species ◽  
Breeding Grounds ◽  
Sinusoidal Pattern ◽  
Early Fall ◽  
Prey Items

During the summers of 1981 and 1982, feeding ecology was studied in migrating populations of Red-necked Phalaropes (Phalaropus lobatus) at their late summer – early fall staging ground in the Quoddy region of the Bay of Fundy (44°55′ – 45°00′ N, 66°54′–66°59′ W). This species was particularly abundant during August 1982 when 5 000 to 20 000/km2 were present in the study area at the peak of occupation. Calanus finmarchicus was both the major prey item and the most plentiful zooplankton species in the area in which the phalaropes fed (mean density, 117 individuals/m2). The birds were consistently found in sectors of the study area corresponding to maximum C. finmarchicus concentrations, made readily available at the surface by upwelling activity. The phalaropes fed almost exclusively on this species, which made up 88.6% of the total number of prey items found in the stomachs; smaller copepods, seeds, and insects made up the rest, with a size limit for ingested prey of 6 mm. The birds fed by pecking constantly at the surface of the water while swimming in a sinusoidal pattern; this differs markedly from the spinning behavior observed near the breeding grounds.

Distribution and structure of coastal ichthyoplankton communities of the Bay of Fundy in southern New Brunswick, Canada

2021 ◽  
Vol 51 (1) ◽  
Author(s):  
Lou Van Guelpen ◽  
Claire Goodwin ◽  
Rebecca Milne ◽  
Gerhard Pohle ◽  
Simon Courtenay
Keyword(s):  
New Brunswick ◽  
Bay Of Fundy

Limnetic Zooplankton Assemblages in Atlantic Canada with Special Reference to Acidification

1986 ◽  
Vol 43 (2) ◽  
pp. 444-456 ◽  
Author(s):  
J. C. H. Carter ◽  
W. D. Taylor ◽  
R. Chengalath ◽  
D. A. Scruton
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Fish Predation ◽  
Low Ph ◽  
Buffering Capacity ◽  
The Other ◽  
Bay Of Fundy ◽  
Factor Scores ◽  
Multiple Discriminant Analysis ◽  
Biological Factors

Crustacean and rotifer plankton assemblages of 93 lakes in Labrador, 107 in Newfoundland, and 142 in New Brunswick – Nova Scotia were investigated for evidence of correlations with lake morphometric, chemical, or biological factors. Labrador assemblages were almost completely lacking in identifiable structure. Newfoundland species clustered into two groups of different body size, suggesting the influence of fish predation. Only one species in Labrador and Newfoundland was significantly correlated with a derived factor related to lake water buffering capacity. New Brunswick – Nova Scotia species clustered into two groups, one featuring significant positive and the other significant negative correlations with the buffering factor. From this we conclude that acidification is having an impact on the limnetic zooplankton of these two provinces. Multiple discriminant analysis was used to demonstrate that New Brunswick – Nova Scotia lakes differing in their buffering capacity were also distinct in zooplankton composition. Lakes with low factor scores (low pH, alkalinity, and calcium) were mainly located in the Bay of Fundy region; this area has above average fog and precipitation, and lies within the summer air flow carrying pollutants from the south.

Habitat selection of sympatric Siberian Grouse and Hazel Grouse in natural and exploited forests of the lower Amur region

Ornis Fennica ◽  
2022 ◽  
Vol 98 (4) ◽  
pp. 142-161
Author(s):  
Tobias Ludwig ◽  
Ralf Siano ◽  
Alexander V. Andreev
Keyword(s):  
Habitat Selection ◽  
Russian Far East ◽  
Far East ◽  
Canopy Cover ◽  
Late Summer ◽  
Breeding Habitat ◽  
Empirical Modelling ◽  
Hazel Grouse ◽  
Pioneer Trees ◽  
Selection Of

The Siberian Grouse (Falcipennis falcipennis), which is endemic to the “dark-needle” taiga of the Russian Far East, is one of the least studied grouse species in the world. We examined post-breeding habitat selection of Siberian Grouse and contrasted it with that of the better examined Hazel Grouse (Tetrastes bonasia) in two areas near Komsomolsk na Amure, Russia. To infer species-specific preferences, we used field sampling, logistic regression, and AIC model selection, and compared late summer habitats of Siberian Grouse and Hazel Grouse in a mountain- and hilly area in the dark needle taiga. Our study is the first to explain Siberian Grouse habitat relationships with an empirical modelling approach. Results indicate proportions of coniferous/ pioneer trees forest and rejuvenation to be the most important covariates separating Siberian and Hazel Grouse observation sites in forests from both areas. Siberian Grouse tended to select sites with low proportions of pioneer trees and rejuvenation but availability of dwarf shrubs. Bunchberry (Cornus canadensis) appeared to be of high importance for the presence of Siberian Grouse in both regions. Hazel Grouse were common in places dominated by pioneer trees with high canopy cover, and high proportions of grass/herb cover. Hazel Grouse also occurred more often in forest sites with dense vertical layering and rejuvenation. Modern forestry, which results in increasing amounts of forests at younger successional stages, is likely to favour the Hazel Grouse at the expense of the Siberian Grouse.

Pattern of recent vertical crustal movements in Maritime Canada

1976 ◽  
Vol 13 (5) ◽  
pp. 661-667 ◽  
Author(s):  
Petr Vaníček
Keyword(s):  
New Brunswick ◽  
Sea Level ◽  
Bay Of Fundy ◽  
Vertical Movements ◽  
Crustal Movements ◽  
First Order ◽  
Level Data ◽  
Velocity Surface ◽  
Maritime Canada ◽  
Vertical Crustal Movements

A surface depicting linear vertical movements in Maritime Canada was computed from sea-level data recorded by 8 tide guages and 308 mostly disjoint, relevelled segments of the first-order Canadian levelling network. Owing to the sparsity of the available data and their distribution, the velocity surface must be regarded as indicative of the crude features only. The indications are that there is a west-northwest trending belt of faster subsidence across the eastern end of the Bay of Fundy, and that there may be an area of uplift in northeastern New Brunswick. Although the faster subsidence around the eastern Bay of Fundy seems to be well established now, more data are needed to prove or dispel the existence of the indicated uplift.

scholarly journals Backscatter strength and shaded seafloor relief, Bay of Fundy, sheet 11, offshore Nova Scotia - New Brunswick

2011 ◽  
Author(s):  
B J Todd ◽  
J Shaw ◽  
D R Parrott ◽  
J E Hughes Clarke ◽  
D Cartwright ◽  
...  
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Bay Of Fundy

scholarly journals Backscatter strength and shaded seafloor relief, Bay of Fundy, sheet 3, offshore Nova Scotia - New Brunswick

2011 ◽  
Author(s):  
B J Todd ◽  
J Shaw ◽  
D R Parrott ◽  
J E Hughes Clarke ◽  
D Cartwright ◽  
...  
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Bay Of Fundy

scholarly journals New records and AMS radiocarbon dates on Quaternary Walrus ( Odobenus Rosmarus ) from New Brunswick

2002 ◽  
Vol 51 (1) ◽  
pp. 107-111 ◽  
Author(s):  
Randall F. Miller
Keyword(s):  
New Brunswick ◽  
New Records ◽  
Temporal Distribution ◽  
Late Glacial ◽  
Bay Of Fundy ◽  
Eastern Canada ◽  
Radiocarbon Dates ◽  
Odobenus Rosmarus ◽  
Sand And Gravel ◽  
Past Summer

Abstract Walrus fossils are occasionally recovered during scallop dragging in the Bay of Fundy and from sand and gravel deposits along the coastline of New Brunswick in eastern Canada. Six new fossils and four new AMS radiocarbon dates significantly increase the information concerning late-glacial to postglacial walrus in New Brunswick. Dates range from about 12 800 BP to 2 900 BP, almost half falling between 9 000 and 10 000 BP. Temporal distribution of walrus, compared to estimates of past summer sea surface temperature, suggest that in the Bay of Fundy walrus occurred in waters ranging from 12 to 15° C.

Sign in / Sign up

Export Citation Format

Share Document