The Food of Salmon Fry in Eastern Canada

1936 ◽  
Vol 2 (5) ◽  
pp. 499-506 ◽  
Author(s):  
H. C. White
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Late Summer ◽  
Considerable Proportion ◽  
Eastern Canada ◽  
Chironomid Larvae ◽  
Growing Period ◽  
Cumberland County ◽  
Major Food ◽  
Salmon Fry

Stomach analyses were made of young salmon in their first summer, as obtained from West and East Apple rivers, and Reeds and Eatonville creeks, all in Cumberland county, Nova Scotia, and from Digdeguash river in New Brunswick. Chironomid larvae formed the chief food of the newly emerged fry, while ephemerid nymphs constituted the major food taken during the mid-summer growing period. Trichoptera tended to become important toward autumn, but at times formed a considerable proportion of the food even in July and August. Plecoptera, simuliids and tipulids also occurred, and terrestrial forms such as Hymenoptera, Homoptera and Diptera were taken in appreciable quantities in late summer and autumn.

A comparison of magnetic character and alteration in three granite drill cores from eastern Canada

1988 ◽  
Vol 25 (8) ◽  
pp. 1141-1150 ◽  
Author(s):  
K. L. Harding ◽  
W. A. Morris ◽  
S. J. Balch ◽  
P. Lapointe ◽  
A. G. Latham
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
The South ◽  
Eastern Canada ◽  
General Observation ◽  
South Mountain Batholith ◽  
Magnetite Content ◽  
Bulk Magnetic Susceptibility ◽  
Primary Oxidation ◽  
Drill Cores

Bulk magnetic susceptibility (BMS) measurements have been made on granite drill cores from the St. George batholith (New Brunswick), the South Mountain batholith (Nova Scotia), and the Wedgeport pluton (Nova Scotia). The primary magnetite concentrations of the two Nova Scotia cores are statistically indistinguishable, thus lending support to the hypothesis that the Wedgeport pluton, despite being 50 Ma younger, is a satellite of the South Mountain batholith.The St. George core has a primary magnetite concentration over 30 times greater than the Nova Scotia cores, but low-temperature alteration (attributable to subsurface weathering) has greatly reduced its magnetite content. The two Nova Scotia S-type granites are shown to fall into the ilmenite-series category, whereas the St. George granite, which is either S- or A-type, is transitional between the magnetite and ilmenite series.The general observation of intergranular hematite and reduced BMS in the outcrops of some granites is suggested to have important consequences for primary oxidation studies and aeromagnetic interpretation.

The genus Suaeda (Chenopodiaceae) in Canada

1978 ◽  
Vol 56 (6) ◽  
pp. 581-591 ◽  
Author(s):  
I. J. Bassett ◽  
C. W. Crompton
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Eastern Canada ◽  
Suaeda Maritima

The taxonomy of Suaeda spp. occurring in Canada has been studied. It is concluded that four species are present: Suaeda moquinii (Torrey) Greene, S. calceoliformis (Hook.) Moq., S. maritima L., and S. rolandii I. J. Bassett & C. W. Crompton sp.nov. Suaeda moquinii (2n = 18) is only known from the badlands of Saskatchewan and Alberta; S. calceoliformis (2n = 54) is widespread across Canada; S. maritima (2n = 36) is mostly present along the Atlantic coastline; S. rolandii (2n = 90) is found only in Quebec, New Brunswick, and Nova Scotia. Suaeda maritima spp. richii comb. nov. is rare in eastern Canada. Several names applied to these taxa are discussed.

Two new Atheta species (Coleoptera: Staphylinidae: Aleocharinae) from eastern Canada: taxonomy, bionomics, and distribution

2007 ◽  
Vol 139 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Jan Klimaszewski ◽  
Christopher G. Majka
Keyword(s):  
New Species ◽  
Nova Scotia ◽  
New Brunswick ◽  
Related Species ◽  
Prince Edward Island ◽  
Eastern Canada ◽  
Closely Related Species ◽  
Black And White

AbstractTwo new athetine beetles from eastern Canada are described and illustrated: Atheta (Metadimetrota) savardae Klimaszewski and Majka, sp. nov. (Nova Scotia, Quebec) and Atheta (Datomicra) acadiensis Klimaszewski and Majka, sp. nov. (Nova Scotia, New Brunswick, Prince Edward Island, and Quebec). Their relationships to other closely related species are discussed, and new data on bionomics and distribution are provided. The new species are presented with a short diagnosis, description, colour habitus images, and black-and-white genital images.

Summer zooplankton distributions at the surface of the outer Bay of Fundy, eastern Canada

1989 ◽  
Vol 67 (11) ◽  
pp. 2725-2730 ◽  
Author(s):  
R. G. B. Brown ◽  
D. E. Gaskin
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Water Column ◽  
Relative Abundance ◽  
Dominant Species ◽  
Calanus Finmarchicus ◽  
Bay Of Fundy ◽  
Eastern Canada

Copepods and cladocerans were collected, mainly in August, from the top 0.25 m of the water column in the outer Bay of Fundy, off Brier Island, Nova Scotia (ca. 44°15′N, 66°23′W) in 1975–1978, Deer Island, New Brunswick (ca. 45°00′N, 67°00′W) in 1977–1978, and Grand Manan Island, New Brunswick (ca. 44°40′N, 66°43′W) in 1981. In 1975–1977, the dominant species at the surface off Brier Island were stage CIV-I Calanus finmarchicus and CVI-V Pseudocalanus sp. The copepods Acartia spp., Anomalocera pattersonii, Centropages sp., Eurytemora spp., and Oithonia similis and the cladocerans Evadne sp. and Podon sp. also occurred regularly. The relative abundance of Calanus finmarchicus declined during the period July–October 1976, though the proportion of stages CVI-V increased. The relative proportions of Pseudocalanus sp., and of its stages CVI-V, both declined during the same period. The community at the surface was similar to that collected in other studies from subsurface tows in the Bay of Fundy as a whole, including Brier, Deer, and Grand Manan islands. This was not true of Brier Island in 1978: CVI-V Calanus finmarchicus predominated, and other species were scarce. Our samples from Deer and Grand Manan islands resembled those from Brier Island in 1978, though CVI-V Calanus finmarchicus predominated even more strongly. We discuss the differences between our samples from Brier Island in 1978 and 1975–1977, and between the latter and our New Brunswick data. However, there is no obvious explanation for most of these anomalies.

scholarly journals Alethopteris and Neuralethopteris from the lower Westphalian (Middle Pennsylvanian) of Nova Scotia and New Brunswick, Maritime Provinces, Canada

2020 ◽  
Vol 56 ◽  
pp. 111-145
Author(s):  
Carmen Álvarez-Vázquez
Keyword(s):  
United States ◽  
Nova Scotia ◽  
New Brunswick ◽  
Western Europe ◽  
The United States ◽  
Maritime Provinces ◽  
Eastern Canada ◽  
Systematic Revision ◽  
Insufficient Attention ◽  
The North

A systematic revision of Alethopteris and Neuralethopteris from upper Namurian and lower Westphalian (Middle Pennsylvanian) strata of Nova Scotia and New Brunswick, eastern Canada, has demonstrated the presence of eight species: Alethopteris bertrandii, Alethopteris decurrens, Alethopteris cf. havlenae, Alethopteris urophylla, Alethopteris cf. valida, Neuralethopteris pocahontas, Neuralethopteris schlehanii and Neuralethopteris smithsii. Restudy of the Canadian material has led to new illustrations, observations and refined descriptions of these species. Detailed synonymies focus on records from Canada and the United States. As with other groups reviewed in earlier articles in this series, it is clear that insufficient attention has been paid to material reposited in Canadian institutions in the European literature. The present study emphasizes the similarity of the North American flora with that of western Europe, especially through the synonymies.

Carboniferous tetrapod footprint biostratigraphy, biochronology and evolutionary events

2021 ◽  
pp. SP512-2020-235
Author(s):  
Spencer G. Lucas ◽  
Matthew R. Stimson ◽  
Olivia A. King ◽  
John H. Calder ◽  
Chris F. Mansky ◽  
...  
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Middle Devonian ◽  
Prince Edward Island ◽  
Early Permian ◽  
Eastern Canada ◽  
High Fiber ◽  
Maritimes Basin ◽  
Insight Into

AbstractThe Carboniferous record of tetrapod footprints is mostly of Euramerican origin and provides the basis for a footprint biostratigraphy and biochronology of Carboniferous time that identifies four tetrapod footprint biochrons: (1) stem-tetrapod biochron of Middle Devonian-early Tournaisian age; (2) Hylopus biochron of middle-Tournaisian-early Bashkirian age; (3) Notalacerta-Dromopus interval biochron of early Bashkirian-Kasimovian age; and (4) Dromopus biochron of Kasimovian-early Permian age. Particularly significant is the Carboniferous tetrapod footprint record of the Maritimes basin of eastern Canada (New Brunswick, Nova Scotia and Prince Edward Island), which encompasses well-dated and stratigraphically superposed footprint assemblages of Early Mississippian-early Permian age. The Carboniferous tetrapod footprint record provides these important biostratigraphic datums: (1) oldest temnospondyls (middle Tournaisian); (2) oldest reptiliomorphs, likely anthracosaurs (middle Tournaisian); (3) oldest amniotes (early Bashkirian); and (4) oldest high fiber herbivores (Bashkirian). Carboniferous tetrapod footprints thus provide significant insight into some major events of the Carboniferous evolution of tetrapods.

The millipeds of eastern Canada (Arthropoda: Diplopoda)

1988 ◽  
Vol 66 (7) ◽  
pp. 1638-1663 ◽  
Author(s):  
Rowland M. Shelley
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Prince Edward Island ◽  
Maritime Provinces ◽  
Eastern Canada ◽  
Southern Ontario ◽  
The Family ◽  
The Common ◽  
Total Fauna

The diplopod fauna of eastern Canada, an area containing all or parts of Ontario, Quebec, New Brunswick, Nova Scotia, Prince Edward Island, and Newfoundland, consists of 6 orders, 15 families, 28 genera, and 38 species. Eighteen species, 47% of the total fauna, are synanthropic forms introduced chiefly from Europe, and 11 additional millipeds, including another order and family, may occur there, particularly in southern Ontario. The sole Canadian records of Polyzonium mutabile Causey, Aniulus paludicolens Causey, Uroblaniulus stolidus Causey, Pseudopolydesmus branneri (Bollman), Scytonotus granulatus (Say), and Pleuroloma flavipes Rafinesque; the genera Cleidogona, Scytonotus, and Pleuroloma; and the family Cleidogonidae are from Ontario. Pleuroloma flavipes and Uroblaniulus stolidus, in Essex and Algoma counties, are newly recorded from Canada. Polyxenus lagurus (L.), Underwoodia iuloides (Harger), and Trichopetalum lunatum Harger are the only native diplopods in the Maritime Provinces, and Allajulus caeruleocinctus (Wood), a Palearctic introduction, is the only species known from New Brunswick and Prince Edward Island. The combination Polyzonium cryptocephalum (McNeill) is revived for the dominant eastern polyzoniid species, and Petaserpes rosalbus Cope and Polyzonium divaricatum Loomis are recognized as synonyms of it, the latter being new. Other new synonymies are Polyzonium borealis Loomis and P. quadricauda Loomis with P. mutabile Causey; Julus immaculatus Wood and Parajulus dux Chamberlin with Uroblaniulus canadensis (Newport); and Underwoodia polygama Cook and Collins with U. iuloides. Apheloria virginiensis (Drury), n.comb., is proposed as are subspecific statuses for the common eastern spirobolid millipeds. American species improbable for eastern Canada are identified, and a key to known and potential taxa and pertinent anatomical drawings are provided.

scholarly journals Paleotethyan faunal/floral evidence in the Mississippian Maritimes Basin of Canada: An overview

2021 ◽  
pp. 1-20
Author(s):  
Pedro Cózar ◽  
Ian D. Somerville
Keyword(s):  
Nova Scotia ◽  
North America ◽  
New Brunswick ◽  
Western Europe ◽  
Statistical Analyses ◽  
Eastern Canada ◽  
Rheic Ocean ◽  
The North ◽  
Logical Connection ◽  
Maritimes Basin

Abstract In this study, middle to late Mississippian microfossil assemblages from the Maritimes Basin of eastern Canada (Nova Scotia, SW Newfoundland, and New Brunswick) are closely compared to those from Western Paleotethys basins. The comparison is focused mainly on foraminifers and calcareous algae. Most foraminifers and algae described from the Maritimes Basin are considered cosmopolitan, and the occurrence in western Europe and northern Africa of taxa previously considered endemic to the North America Realm suggests a close paleobiogeographic relationship. This European/African correlation is further supported by other foraminiferal/algal taxa, the importance of which were previously overlooked, including: Plectogyranopsis ex gr. P. hirosei (Okimura, 1965), Mikhailovella Ganelina, 1956, Koktjubina windsorensis (Mamet, 1970), Polysphaerinella bulla Mamet, 1973, Mstinia Dain in Dain and Grozdilova, 1953, Haplophragmina Reitlinger, 1950, Omphalotis Shlykova, 1969, Pseudolituotuba Vdovenko, 1971, Pseudoendothyra Mikhailov, 1939, Saccamminopsis (Sollas, 1921) Vachard and Cózar, 2003, Kamaenella Mamet and Roux, 1974, and Anthracoporellopsis Maslov, 1956. Some species recorded in the Maritimes Basin have been typically recorded in Britain and Ireland in the southern platform of Laurussia. This implies a connection via the Rhenohercynian Ocean, whereas statistical analyses suggest that Maritimes Basin assemblages are closer to those of the Gondwana platform, which could have been established via the Paleotethys Ocean, and also with terranes northwest of the Variscan Front, in which its most logical connection should be with a still-open Rheic Ocean during the Visean and early Serpukhovian. Those taxa demonstrate a more-or-less continuous faunal and microfloral interchange between the Maritimes Basin and the Western Paleotethys paleobiogeographic realm. Furthermore, the width of the Paleotethys and Rheic oceans separating these regions is not considered excessive, particularly during the late Visean and early Serpukhovian.

scholarly journals Biomass and height of Ascophyllum nodosum after two decades of continuous commercial harvesting in eastern Canada

2021 ◽  
Author(s):  
Jean-Sébastien Lauzon-Guay ◽  
Raúl A. Ugarte ◽  
Bryan L. Morse ◽  
Collette A. Robertson
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Ascophyllum Nodosum ◽  
Average Height ◽  
Eastern Canada ◽  
Current Management ◽  
Increasing Demand ◽  
The Impact ◽  
Broad Spatial Scale ◽  
Commercial Harvesting

AbstractWith the increasing demand for seaweed resources worldwide, management must ensure that the harvest of wild seaweed stocks is sustainable. We evaluate the impact of over 25 years of commercial harvesting of Ascophyllum nodosum in eastern Canada by comparing the biomass and height of the seaweed in the late 1990s to the late 2010s over a broad spatial scale spanning the provinces of Nova Scotia and New Brunswick. There has been no significant decrease in the biomass of A. nodosum in either province, and biomass has increased in some regions of New Brunswick during that period. The average height of A. nodosum has decreased by 7.8 cm in Nova Scotia while it increased by 13.8 cm in New Brunswick. Biomass of A. nodosum in unharvested sectors was 7% higher than that in harvested sectors while height of A. nodosum in unharvested sectors in New Brunswick is similar to the values observed in harvested sectors. Over the same period, water temperature has increased in both provinces and, in recent years, has at times exceeded the optimal growing temperature for A. nodosum within bays in Nova Scotia. We conclude that the current management and harvest of A. nodosum in eastern Canada are sustainable and maintain the biomass and height of A. nodosum beds but that control sites are necessary to offer adequate comparisons as environmental conditions are changing.

scholarly journals Silurian crinoids of the New Brunswick Museum, Saint John, Canada

2016 ◽  
Vol 52 ◽  
pp. 223
Author(s):  
Stephen K. Donovan ◽  
Randall F Miller
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Fossil Record ◽  
Eastern Canada ◽  
Lower Silurian ◽  
The Poor ◽  
Saint John ◽  
Upper Silurian

The New Brunswick Museum’s collection of Silurian crinoids from eastern Canada is small, and includes specimens from New Brunswick, Quebec and Nova Scotia. Material considered herein is, with one exception, from New Brunswick. Included are: the cladid Syndetocrinus dartae (Upper Silurian of Quebec); the camerates Scyphocrinites sp. (Pridoli or Lochkovian) and camerate crinoid arms gen. et sp. indet. (Lower Silurian); columnal morphotaxa Floricrinus (col.) sp. (Ludlow or Pridoli) and Lanxocolumnus (col.) sp. cf. L. chaleurensis Donovan and Keighley (probably Llandovery, Telychian); distal dendritic radicular attachments (Ludlow or Pridoli); and disarticulated brachials (Ludlow or Pridoli). ἀe fossil record of crinoids from the Silurian of New Brunswick appears depauperate, but this most likely reḀects the poor preservation of the specimens (commonly disarticulated and moldic) and the lack of interest shown by collectors. ἀe only remedy for this problem would be either discovery of a crinoid Lagerstätte, which would be attractive to collectors, or a focused campaign of collecting of disarticulated material from multiple outcrops.

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