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 Two additions to the moss flora of the South Shetland Islands in the maritime Antarctic

2018 ◽  
Vol 87 (4) ◽  
Author(s):  
Mariusz Wierzgoń ◽  
Tomasz Suchan ◽  
Michał Ronikier
Keyword(s):  
South Shetland Islands ◽  
King George Island ◽  
Maritime Antarctic ◽  
The South ◽  
Shetland Islands ◽  
Bay Area ◽  
Leading Position ◽  
Glacial Cover ◽  
The Antarctic ◽  
First Time

<em>Tortella fragilis</em> (Drumm.) Limpr. (Pottiaceae) and <em>Bryum nivale</em> Müll. Hal. (Bryaceae) are recorded for the first time from the South Shetland Islands in the northern maritime Antarctic. They were discovered in the Admiralty Bay area on King George Island, the largest island of this archipelago. The two species are briefly characterized morphologically, their habitats are described, and their distribution in the Antarctic is mapped. Discovery of these species has increased the documented moss flora of King George Island to 67 species, strengthening it in the leading position among individual areas with the richest diversity of moss flora in Antarctica. Likewise, <em>T. fragilis</em> and <em>B. nivale</em> represent remarkable additions to the moss flora of the South Shetland Islands, which currently consists of 92 species and one variety, making this archipelago by far the richest bryofloristically amongst large geographic regions of the Antarctic. Comparison of recent (2018) and old (1985) photographs revealed a significant retreat of glacial cover and suggests that the collection site was likely opened for colonization only within the last several decades. The record of <em>T. fragilis</em> is biogeographically relevant, and constitutes an intermediate site between the species’ occurrences in the Antarctic Peninsula and southern South America. The present record of <em>B. nivale</em> is the fourth discovery of the species worldwide, which may be helpful for the future designation of the distribution of this extremely rare species.

Pygmy Whitefish, Prosopium coulteri, in Three Lakes of the Copper River System in Alaska

1979 ◽  
Vol 36 (4) ◽  
pp. 468-470 ◽  
Author(s):  
Franklin H. Bird ◽  
Kenneth Roberson
Keyword(s):  
Key Words ◽  
Lake Superior ◽  
River System ◽  
Geographical Proximity ◽  
River Drainage ◽  
Yukon River ◽  
Probable Origin ◽  
First Time

Pygmy whitefish (Prosopium coulteri) were recorded for the first time from the Copper River drainage in Alaska (from Tazlina, Klutina, and Tonsina lakes). Morphology of the specimens indicate affinity to the Lake Superior and Waterton Lake populations, falling outside the ranges previously established for "low-rakered" and "high-rakered" forms found in Alaska. Based on geographical proximity, however, probable origin for these fish is from an upper Yukon River unglaciated refugium. Key words: pygmy whitefish, Copper River, Alaska, morphology, Yukon River, unglaciated refugium

Parasites of Fishes of Aishihik and Stevens Lakes, Yukon Territory, and Potential Consequences of Their Interlake Transfer Through a Proposed Water Diversion for Hydroelectrical Purposes

1976 ◽  
Vol 33 (11) ◽  
pp. 2489-2499 ◽  
Author(s):  
J. R. Arthur ◽  
L. Margolis ◽  
H. P. Arai
Keyword(s):  
River System ◽  
Parasite Fauna ◽  
Yukon Territory ◽  
Water Diversion ◽  
Yukon River ◽  
First Time ◽  
Triaenophorus Nodulosus

Forty-six species of parasites (14 Protozoa, 7 Monogenea, 7 Digenea, 8 Cestoda, 2 Acanthocephala, 4 Nematoda, 3 Copepoda, and 1 Hirudinoidea) were recovered from 383 specimens of 8 species of fishes collected from Aishihik and Stevens lakes, Yukon Territory, during the summer of 1973. Four species, Chloromyxum dubium Auerbach, 1908, C. esocinum Dogiel, 1934, Sphaerospora cristata Shulman, 1962 (all Protozoa), and Crepidostomum metoecus Braun, 1900 (Digenea) are reported for the first time from North America.Aspects of the systematics and distribution of several species are discussed and the following new synonymies recognized: Tetraonchus rauschi Mizelle and Webb, 1953 with T. borealis (Olsson, 1893) (Monogenea);Cystidicola stigmatura (Leidy, 1886) with C. farionis Fischer, 1798; and Raphidascaris canadensis Smedley, 1933 with R. acus (Bloch, 1779) (both Nematoda).Substantial differences in the parasite fauna of Aishihik and Stevens lakes are noted; the possible consequences of the introduction of species of potential economic and pathogenic importance e.g. Henneguya zschokkei (Gurley, 1893), Hexamita salmonis (Moore, 1923) (both Protozoa), Discocotyle sagittata (Leuckart, 1842) (Monogenea), Neoechinorhynchus rutili (O. F. Müller, 1780) (Acanthocephala), and Triaenophorus nodulosus (Pallas, 1781) (Cestoda) into new areas as a result of the proposed diversion of Stevens Lake (Yukon River system) into Aishihik Lake (Alsek River system) are discussed.

The stratigraphy and sedimentology of the Fundy Group (Triassic) of the St. Martins area, New Brunswick

1985 ◽  
Vol 22 (8) ◽  
pp. 1183-1203 ◽  
Author(s):  
G. C. Nadon ◽  
G. V. Middleton
Keyword(s):  
New Brunswick ◽  
River System ◽  
Alluvial Fans ◽  
Braided River ◽  
The South ◽  
Red Beds ◽  
Western Margin ◽  
Half Graben ◽  
South Shore ◽  
First Time

Triassic sediments exposed along the south shore of New Brunswick, near St. Martins, were deposited primarily by a series of alluvial fans prograding eastward from the western margin of the Fundy half graben and are interbedded with fluvial conglomerates deposited by an axially flowing river system. The sediments are divisible into three formations, which are described here formally for the first time. These are, from base to top, the Honeycomb Point, Quaco, and Echo Cove formations. The basal Honeycomb Point Formation consists of approximately 990 m of red beds exposed in several fault blocks. The western outcrops consist of coarse breccias of the proximal fan, the Browns Beach Member, which fines eastward into sheetflood deposits of the mid- to distal fan, the McCumber Point Member. Both units contain eolian sands that indicate paleowind direction from the northeast. These are overlain by fluvial conglomerates of the Quaco Formation, 190–300 m thick, which were deposited by a large, braided river system that flowed north along the axis of the graben. Renewed growth of the alluvial fans led to the deposition of the Echo Cove Formation, 850–1300 m thick, on the conglomerates. The coarsest breccias are found in the westernmost exposures, the Stony Brook Member, and along the coast the formation is divided into the basal redbed unit, the Berry Beach Member, which grades into green beds of the Fownes Head Member, which in turn is overlain by the red beds of the Melvin Beach Member. Pollen recovered from the upper portion of the Fownes Head Member places the unit in the mid-Carnian (and possibly Ladinian).

Major range extensions of anadromous salmonids and first record of chinook salmon in the Mackenzie River drainage

1983 ◽  
Vol 61 (9) ◽  
pp. 2183-2184 ◽  
Author(s):  
C. L. McLeod ◽  
J. P. O'Neil
Keyword(s):  
Northwest Territories ◽  
Chinook Salmon ◽  
Chum Salmon ◽  
Oncorhynchus Tshawytscha ◽  
Grand Canyon ◽  
River System ◽  
First Record ◽  
Oncorhynchus Keta ◽  
River Drainage ◽  
Mackenzie River

Spawning migrations of chum salmon, Oncorhynchus keta (Walbaum), and Arctic cisco Coregonus autumnalis (Pallas), in the Liard River system (Mackenzie River drainage) within the Northwest Territories and British Columbia were documented during the period 1978 to 1981. These species have not been reported previously from the Liard River. The points of capture, as far upstream as the Grand Canyon of the Liard, represent a major southerly range extension in the Mackenzie River drainage and upstream migrations of nearly 2000 km from the Beaufort Sea. The first record of a chinook salmon, Oncorhynchus tshawytscha (Walbaum), from the Mackenzie River drainage is reported also. The specimen was collected in the Liard River, Northwest Territories, and was probably a stray, accompanying a spawning escapement of chum salmon.

Sphagnum mosses (Sphagnaceae, Bryophyta) of South Ossetia (Caucasus)

2017 ◽  
Vol 51 ◽  
pp. 232-241 ◽  
Author(s):  
G. Ya. Doroshina ◽  
E. Yu. Kuzmina ◽  
I. A. Nikolajev
Keyword(s):  
The South ◽  
The Caucasus ◽  
South Ossetia ◽  
Sphagnum Mosses ◽  
Botanical Institute ◽  
Ecological Conditions ◽  
Komarov Botanical Institute ◽  
The World ◽  
First Time

Information on the Sphagnum mosses of the South Ossetia is generalized, the resulted list is presented. Nine species of Sphagnum are included in the list, whereabouts data and references to the publications are given, and the presence of a sample in the Herbarium of the Komarov Botanical Institute RAS (LE) is noted. The species Sphagnum platyphyllum (Lindb. ex Braithw.) Warnst. rarely occurring in the Caucasus is reported in the South Ossetia for the first time. The species was found in the Caucasus, South Ossetia, at the side of the Ertso Lake (42°28ʹN, 43°45ʹE), 1720 m a. s. l., among sedge thickets at the margin of the overgrowing lake. The peculiarities of its occurrence and ecological conditions are considered. Its distribution in the Caucasus and in the world is discussed.

The first data on the lichen flora of Dagestan beech forests

2013 ◽  
Vol 47 ◽  
pp. 215-221 ◽  
Author(s):  
A. B. Ismailov ◽  
G. P. Urbanavichus
Keyword(s):  
Lichen Species ◽  
The South ◽  
Beech Forests ◽  
Saprotrophic Fungi ◽  
South Eastern ◽  
Caucasus Mountains ◽  
First Time ◽  
Lichen Flora

49 lichen species and 2 species of non-lichenized saprotrophic fungi are recorded for the first time in beech forests of the south-eastern part of piedmont Dagestan. Among them, 34 species and 9 genera are new to Dagestan Republic, and 2 species, Diplotomma pharcidium (Ach.) M. Choisy and Rinodina albana (A. Massal.) A. Massal., are new to Caucasus Mountains.

First record of Agramma atricapillum (Heteroptera: Tingidae) from the Asian part of Russia

2020 ◽  
Vol 29 (1) ◽  
pp. 75-76
Author(s):  
V.B. Golub ◽  
E.V. Sergeeva
Keyword(s):  
First Record ◽  
The South ◽  
First Time

The lacebug species Agramma atricapillum (Spinola, 1837) (Heteroptera: Tingidae) is recorded in the Asian part of Russia, namely in the south of the Tyumen’ Province, for the first time.

Loadings of Selected Chemicals into the St. Lawrence River System from Lake Ontario, 1986/87

1989 ◽  
Vol 24 (4) ◽  
pp. 589-608 ◽  
Author(s):  
I.K. Tsanis ◽  
J. Biberhofer ◽  
C.R. Murthy ◽  
A. Sylvestre
Keyword(s):  
Mass Balance ◽  
Lake Ontario ◽  
River System ◽  
Vertical Gradient ◽  
The South ◽  
Measured Concentration ◽  
Chemical Monitoring ◽  
The North ◽  
Loading Estimates ◽  
St Lawrence River

Abstract Determination of the mass output through the St. Lawrence River outflow system is an important component in computing mass balance of chemical loadings to Lake Ontario. The total flow rate in the St. Lawrence River System at the Wolfe Island area was calculated from detailed time series current meter measurements from a network of current meters and Lagrangian drifter experiments. This flow is roughly distributed in the ratio of 55% to 45% in the South and North channel, respectively. Loading estimates of selected chemicals have been made by combining the above transport calculations with the ongoing chemical monitoring data at the St. Lawrence outflow. A vertical gradient in the concentration of some organic and inorganic chemicals was observed. The measured concentration for some of the chemicals was higher during the summer months and also is higher in the South Channel than in the North Channel of the St. Lawrence River. These loading estimates are useful not only for modelling the mass balance of chemicals in Lake Ontario but also for serving as input loadings to the St. Lawrence River system from Lake Ontario.

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