Tintinnids of Chesterfield Inlet, Northwest Territories

1981 ◽  
Vol 59 (12) ◽  
pp. 2360-2364 ◽  
Author(s):  
G. F. Rogers ◽  
J. C. Roff ◽  
D. H. Lynn
Keyword(s):  
Northwest Territories ◽  
New Records ◽  
Abundant Species ◽  
Hudson Bay ◽  
Marine Waters ◽  
Cell Numbers ◽  
Bay Area ◽  
Marine Influence ◽  
Middle Estuary

Tintinnids were numerically dominant in plankton samples collected from Chesterfield Inlet, Northwest Territories, in September 1978. Thirteen species were identified, 11 of which are new records for the Hudson Bay area. Tintinnopsis fimbriata and T. angusta were the most numerous tintinnids in the upper estuary at salinities below 24‰; their cell numbers were significantly positively correlated to temperature. Parafavella denticulata was the most abundant species in marine waters but it penetrated the estuary to salinities as low as 4‰. Cell numbers and volumes of P. denticulata were significantly positively correlated to salinity and negatively to chlorophyll; this species appeared to act as an almost conservative indicator of marine influence in this estuary. The distributions of the two Tintinnopsis species were not so readily explained, but maximum numbers of T. fimbriata and T. angusta corresponded to a phytoplankton maximum at station 29 in the middle estuary.

Contribution to the Study of the Fishes of Ungava Bay

1952 ◽  
Vol 9 (2) ◽  
pp. 83-128 ◽  
Author(s):  
M. J. Dunbar ◽  
H. H. Hildebrand
Keyword(s):  
Aquatic Environment ◽  
New Records ◽  
Salvelinus Alpinus ◽  
Boreogadus Saida ◽  
Mallotus Villosus ◽  
Boreal Species ◽  
Arctic Species ◽  
Bay Area ◽  
Reinhardtius Hippoglossoides ◽  
Somniosus Microcephalus

The aquatic environment of the Ungava Bay area and watershed is described. Forty-four species of fishes are recorded, belonging to twenty-one families. Twenty-nine are marine forms, two are anadromous, and thirteen are predominantly or entirely freshwater forms. Seventeen are new records for Ungava Bay, and a few are new for the whole of the Canadian Eastern Arctic. The marine piscine fauna is shown to be in the main subarctic, containing such arctic-subarctic forms as Salvelinus alpinus, Reinhardtius hippoglossoidès, Gymnocanthus tricuspis, Icelus bicornis, Aspidophoroides olriki, Lumpenus fabricii, etc., and subarctic-boreal species such as Salmo solar, Gadus callarias, Sebastes marinus, Liparis atlanticus and Mallotus villosus. More strictly arctic species in the fauna are Boreogadus saida, Triglops nybelini and Oncocottus quadricornis; there are two Atlantic boreal species recorded, Faralepis rissoi kröyeri and Lampanyctus crocodilus, and the remainder are fishes of wide north-south range, found in all three zones (arctic, subarctic, boreal), such as Somniosus microcephalus, Myctophum glaciale, Ammodytes dubius, Triglops pingeli, Eumicrotremus spinosus, Liparis tunicatus, Lumpenus maculatus, Lycodes reticulatus.

New Complexities in Zoogeography and Taxonomy of the Pygmy Whitefish (Prosopium coulteri)

1972 ◽  
Vol 29 (12) ◽  
pp. 1772-1775 ◽  
Author(s):  
C. C. Lindsey ◽  
W. G. Franzin
Keyword(s):  
River System ◽  
Yukon Territory ◽  
Hudson Bay ◽  
The South ◽  
Bristol Bay ◽  
River Drainage ◽  
Bay Area ◽  
First Time ◽  
Mackenzie River

Pygmy whitefish (Prosopium coulteri) are recorded for the first time from the Peel–Mackenzie river drainage (Elliott Lake, Yukon Territory) and from the Hudson Bay drainage (Waterton Lakes, Alberta, in the South Saskatchewan–Nelson river system). The morphology of specimens from both localities contradicts the previously known pattern of a southeastern "low-rakered" and a northwestern "high-rakered" form (with the two forms occurring sympatrically in some lakes of the Bristol Bay area). Specimens from Elliott Lake, the most northerly known locality, resemble the southeastern form and those from Waterton Lakes the northwestern form. Both Waterton and Elliott lakes lie close to unglaciated refugia, suggesting that the species may have survived Wisconsin glaciation and diverged in several different watersheds.

scholarly journals Plauditus cestus (Provonsha & McCafferty, 1982) (Insecta: Ephemeroptera: Baetidae): New records from Virginia and the Northwest Territories, with notes on color variation

Check List ◽  
2014 ◽  
Vol 11 (1) ◽  
pp. 1498 ◽  
Author(s):  
Melissa R. Gorski ◽  
Autumn D. E. Fox ◽  
Jordan I. McQueen ◽  
Luke M. Jacobus
Keyword(s):  
North America ◽  
Northwest Territories ◽  
Abdominal Segment ◽  
New Records ◽  
Color Variation ◽  
Aquatic Habitats ◽  
Far North ◽  
Color Variant

Plauditus cestus (Provonsha & McCafferty, 1982) is widespread in eastern and central North America. We provide new data from Virginia that fill a gap in the range of distribution and new data from the Northwest Territories that extend the range of the species by over 1900 km to the northwest. The Northwest Territories specimen represents a new larval color variant, with pronounced coloration of abdominal segment 6. We emphasize the need for additional sampling of aquatic habitats in the Far North.

Santa Cesarea Terme, a sulphuric acid speleogenetic system intensely influenced by marine waters

2021 ◽  
Author(s):  
Ilenia M. D'Angeli ◽  
Jo De Waele ◽  
Adriano Fiorucci ◽  
Bartolomeo Vigna ◽  
Stefano M. Bernasconi ◽  
...  
Keyword(s):  
Sulphuric Acid ◽  
Southern Italy ◽  
Sea Water ◽  
Sampling Site ◽  
Seasonal Effects ◽  
Water Sampling ◽  
Marine Waters ◽  
Water Head ◽  
Marine Influence ◽  
By Products

<p>Santa Cesarea Terme (SCT) karst system opens along the Adriatic coastline of Apulia (southern Italy) and is composed of four sub-horizontally caves Fetida, Sulfurea, Gattulla and Solfatara. Being influenced by rising sulphidic waters, it is used as thermal spa for human health treatments. The caves show interesting signs of hypogene sulphuric acid speleogenetic (SAS) activity such as peculiar morphologies and mineralogical by-products. From the geomorphological standpoint it is possible to observe ceiling cupolas, megacusps (former megascallops), rising channels, submerged feeders, weathered walls, replacement pockets, whereas for mineralogy sulphur, gypsum and jarosite deposits have been recorded. Despite the presence of extensive SAS features, SCT is also intensely influenced by marine water.</p><p>All these observations induced us to conduct a long-lasting (2015-2018) geochemical monitoring to understand intensity and tendency of the two main domains (rising acidic vs. marine).</p><p>Water sampling was done every 3-4 months at 4 sites in Fetida (2 in areas influenced by sea water movements, and 2 in the innermost zone, less but still influenced by sea), and 1 site in Gattulla. Moreover, 1 sampling site located along the coastline (sea water) was constantly monitoring for comparative reasons.</p><p>Collected groundwaters exhibit mean temperatures of 23 °C (7 °C higher than average annual air temperature) and circumneutral pH. All samples belong to the Na-Cl-SO<sub>4</sub> type of waters. Sea waters display the highest pH (ranging between 8.15 and 8.20), [Na<sup>+</sup>], [K<sup>+</sup>], [Mg<sup>2+</sup>], [Cl<sup>-</sup>], [SO<sub>4</sub><sup>2-</sup>], and total dissolved solids (TDS), and on the other hands one of the innermost sampling site in Fetida Cave showed the highest values of temperature (29 °C), [HS<sup>-</sup>], [Ca<sup>2+</sup>] and the lowest pH (6.76). In addition, the Ba<sup>2+</sup>/Sr<sup>2+ </sup>ratio compared with Ca<sup>2+</sup>/HCO<sub>3</sub><sup>-</sup> or Ca<sup>2+</sup>/SO<sub>4</sub><sup>2-</sup> clearly exhibit the presence of two main domains: rising acid and marine. In particular, the samples collected in the Adriatic Sea are always in the domain of marine influence, whilst all the others from Gattulla and Fetida, depending on sampling conditions (tides, waves, etc..), can fall in both domains.</p><p>Our investigations demonstrated rising sulphidic fluids to reach the surface through deep tectonic fractures and karst flowpaths, but seasonal effects due to modest water head variations (tides) and meteomarine conditions affect the geochemical variability, even in the innermost portion of the caves, inducing these slightly thermal acidic fluids to partially mix with marine waters.</p>

BIOLOGICAL AND OCEANOGRAPHIC CONDITIONS IN HUDSON BAY: 6. THE GENERAL HYDROGRAPHY AND HYDRODYNAMICS OF THE WATERS OF THE HUDSON BAY REGION

1932 ◽  
Vol 7 (1) ◽  
pp. 91-118 ◽  
Author(s):  
H. B. HACHEY
Keyword(s):  
Fresh Water ◽  
Water Movement ◽  
Open Ocean ◽  
Hudson Bay ◽  
Water Drainage ◽  
James Bay ◽  
Bay Area ◽  
Hydrographic Conditions ◽  
The Many ◽  
Oceanographic Conditions

The waters of Hudson bay differ markedly from the waters of Hudson strait and the waters of the open ocean. Intense stratification in the upper twenty-five metres, decreasing as the waters of the open ocean are approached, gives Hudson bay the character of a large estuary. Below fifty metres the waters are for all purposes dynamically dead, thus resulting in a cold saline body of water which probably undergoes very little change from season to season. The movements of the waters at various levels are dealt with to show that the inflow of waters from Fox channel and the many fresh-water drainage areas control the hydrographic conditions as found. The main water movement is from the James bay area to Hudson strait and thence to the open ocean.

scholarly journals Planktonic ciliates from an oligotrophic South Andean lake, Morenito Lake (Patagonia, Argentina)

2001 ◽  
Vol 61 (3) ◽  
pp. 389-395 ◽  
Author(s):  
B. E. MODENUTTI ◽  
G. L. PÉREZ
Keyword(s):  
Population Dynamics ◽  
South America ◽  
New Records ◽  
Late Summer ◽  
Abundant Species ◽  
Oligotrophic Lake ◽  
Summer Period ◽  
Planktonic Ciliates ◽  
Ciliate Species ◽  
Oligotrophic Condition

In this contribution we have studied the planktonic ciliates from Morenito Lake, an oligotrophic lake situated in the South Andes of Argentina. Six species that are new records for South America or Argentina are described and illustrated. Besides, population dynamics of the ciliate species were studied during a spring--summer period. Strobilidium lacustris and Balanion planctonicum were the most abundant species, showing a maximum in mid summer. Paradileptus elephantinus was present all over the period while Urotricha furcata was observed in late summer samples. Strobilidium lacustris and S. humile were found to be occasional species during the studied period. The recorded ciliate assemblage with oligotrichs and prostomates as dominant indicate the oligotrophic condition of the lake.

The bee Ruizanthedella mutabilis Spinola (Hymenoptera: Halictidae): a very common but poorly known species studied using integrative taxonomy

Zootaxa ◽  
2019 ◽  
Vol 4563 (1) ◽  
pp. 191
Author(s):  
ROCÍO A. GONZÁLEZ-VAQUERO ◽  
ARTURO ROIG-ALSINA
Keyword(s):  
Dna Barcoding ◽  
New Records ◽  
Atlantic Coast ◽  
Abundant Species ◽  
Integrative Taxonomy ◽  
Junior Synonym ◽  
Morphological Data ◽  
Valid Species ◽  
The Andes ◽  
Argentinean Patagonia

Ruizanthedella mutabilis (Spinola) is a very abundant species in Chile and the northwest of Argentinean Patagonia. In this contribution, Halictus nigrocaeruleus Spinola 1851 is established as a junior synonym of R. mutabilis (Spinola 1851), after considering morphological data, DNA barcoding results, and biological observations. The variability in the colouration of the metasoma has been incorrectly used to distinguish these colour forms as valid species. New records enlarge the distribution of the species in Argentina, from the Andes to the Atlantic coast. 

Mosses of the Nahanni and Liard ranges area, southwestern Northwest Territories

1979 ◽  
Vol 57 (3) ◽  
pp. 269-283 ◽  
Author(s):  
Dale H. Vitt ◽  
Diana G. Horton
Keyword(s):  
Northwest Territories ◽  
North American ◽  
Rocky Mountains ◽  
National Park ◽  
Small Area ◽  
New Records ◽  
The South ◽  
Moss Species ◽  
Mountain Ranges ◽  
The North

The Nahanni and Liard mountain ranges are located at about 61° N latitude and 122° W longitude. They form the easternmost slopes of the Rocky Mountains and lie just east of Nahanni National Park in the southwestern corner of the District of Mackenzie, Northwest Territories. The moss flora of the area is rich in the number of taxa; 207 species and two varieties are reported from this relatively small area. Of these, 53 species are new records for the South Nahanni region. A number of rare or disjunct bryophyte species are found in the area. Moss species which are either disjunct or occur at the edge of their range include Arctoa fulvella (Dicks.) B.S.G., Aulacomnium acuminatum (Lindb. & Arn.) Kindb., Andreaeobryum macrosporum Steere & B. Murray, Geheebia gigantea (Funck) Boul., Isopterygiopsis muelleriana (Schimp.) Iwats., Mnium spinosum (Voit) Schwaegr., Psilopilum cavifolium (Wils.) Hagen, Rhabdoweisia crispata (With.) Lindb., Seligeria calcarea (Hedw.) B.S.G., S. polaris Berggr., Trematodon brevicollis Hornsch., and Trichostomum arcticum Kaal. The North American distribution of these species is mapped. Herbertus stramineus (Dum.) Trev., Metacalypogeia schusterana Hatt. & Mizut., Scapania crassiretis Bryhn, and S. simmonsii Bryhn & Kaal. are four hepatic species of phytogeographic interest.

Thecate Hydroids from the Shelf Waters of Northern Canada

1970 ◽  
Vol 27 (9) ◽  
pp. 1501-1547 ◽  
Author(s):  
Dale R. Calder
Keyword(s):  
North America ◽  
New Records ◽  
High Arctic ◽  
Common Species ◽  
Hudson Bay ◽  
Northern Canada ◽  
Foxe Basin ◽  
First Time

Based largely on collections from the Calanus–Salvelinus expeditions, 54 species of thecate hydroids were identified from the shelf waters of northern Canada between northeastern Newfoundland and the Alaska–Yukon border. Common species included Halecium muricatum, Calycella syringa, Campanularia integra, C. speciosa, C. volubilis, Gonothyraea loveni, Filellum serpens, Lafoea gracillima, Sertularella polyzonias, S. tricuspidata, Sertularia schmidti, and S. similis. Halecium groenlandicum, H. scutum, Cuspidella procumbens, Calycella gracilis, and Sertularia schmidti are new records for North America; Ptychogena lactea is previously known from this continent only as the medusa. Twenty-two species are reported in northern Canada for the first time, bringing to 71 the number of thecate species recorded from the region. Nearly half of the 71 species recorded are circumpolar in distribution, and over two-thirds transgress both arctic and subarctic zones.Most samples had a paucity of hydroids, particularly those from the high arctic. Collection records indicate that the most favourable regions for hydroids in northern Canada are the Strait of Belle Isle, eastern Ungava Bay, eastern Hudson Strait, northern and southeastern Hudson Bay, Foxe Channel, and northern Foxe Basin.

Sign in / Sign up

Export Citation Format

Share Document