Elytroderma deformans. [Descriptions of Fungi and Bacteria].

Author(s):  
D. W. Minter

Abstract A description is provided for Elytroderma deformans. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pinus banksiana, P. contorta var. latifolia, P. echinata, P. edulis, P. jeffreyi, P. ponderosa. DISEASE: Witch's broom of pine. Trees of all ages, but mainly those over eleven years old and up to six metres high can be attacked. Current year needles are infected, and gradually discolour (though parts may remain green) over the winter, the discoloration being most marked by the following May, when the imperfect stage is formed. Ascocarps begin to form in June and ascospores are shed over the following winter, with a peak in October corresponding to the start of the rains. Needles killed by the disease are usually shed at about this time. Needles older than one year seem to be immune from infection. Shoots bearing infected needles form characteristic witch's brooms usually about 60 cm diam., but occasionally up to 2 m diam. Unusual resin cysts may be found in the phloem zone of the bark of these brooms, and the fungal hyphae can permeate the woody tissues. GEOGRAPHICAL DISTRIBUTION: North America (Canada: British Columbia, North West Territories, Ontario, USA; Arizona, California, Colorado, Idaho, Montana, Oregon, Washington). TRANSMISSION: By air-borne ascospores in humid or wet weather, also apparently from infected needles, by hyphal growth through the woody tissues into the buds.

Author(s):  
D. W. Minter

Abstract A description is provided for Phacidium infestans. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pinus sylvestris. DISEASE: Snow blight of pine. Ascospores released in September and October (45, 774) infect current year's needles. The depth of snow cover the following winter determines the proportion of needles showing symptoms (39, 250) which are, the following spring, a distinctive reddish-brown resulting from the destruction of chlorophyll (40, 635). Apothecia are produced on the discoloured needles, and usually complete the cycle in one year. Disease severity may be lessened by other ground vegetation, especially Calluna vulgaris and Vaccinium spp. (50, 2009). GEOGRAPHICAL DISTRIBUTION: Asia (Turkey, USSR: Siberia), Europe (Finland, France, Norway, Sweden, USSR: Estonia). TRANSMISSION: By air-borne ascospores in humid or wet weather.


1994 ◽  
Vol 40 ◽  
pp. 253-264 ◽  

The MacIntoshes were displaced from the Western Isles of Scotland by the Highland clearances at the end of the eighteenth century and like many of their compatriots moved to Nova Scotia. Around 1816 the Macintoshes were settled on a farm at Big Harbour Island on the Bras d’Or Lake of Cape Breton Island, that large detached part of Nova Scotia separated from the mainland by the narrow Straits of Canso - so narrow that they were frequently crossed by swimming deer. This part of Nova Scotia had a considerable resemblance to the old home in its landscape and its sea-tom ruggedness, which must have assuaged some of the pain of exile. Frank (who was always known as Hank) was born at Baddeck in Cape Breton on 24 December 1909, the son of the Reverend C.C. Macintosh, a well-known pastor of the United Church of Canada, who spoke and preached in Gaelic in the Canadian Maritimes and in New England. His mother Beenie Matheson, also of Scottish origin, came from Prince Edward Island. She had trained as a teacher and had moved to the north-west territories as a pioneer. As a child Hank frequently went visiting with his father in the horse and buggy. He was a precocious child and taught himself to read at the age of three - largely from the Encyclopedia Britannica - becoming especially interested in the geographical places described therein. At nine he was driving the family Model T. He was very proud of the fact that when he was just one year old, Alexander Graham Bell dandled him on his knee at his home in Beinn Bhreagh.


Author(s):  
Bjørn Thomassen ◽  
Johannes Kyed ◽  
Agnete Steenfelt ◽  
Tapani Tukiainen

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Thomassen, B., Kyed, J., Steenfelt, A., & Tukiainen, T. (1999). Upernavik 98: reconnaissance mineral exploration in North-West Greenland. Geology of Greenland Survey Bulletin, 183, 39-45. https://doi.org/10.34194/ggub.v183.5203 _______________ The Upernavik 98 project is a one-year project aimed at the acquisition of information on mineral occurrences and potential in North-West Greenland between Upernavik and Kap Seddon, i.e. from 72°30′ to 75°30′N (Fig. 1A). A similar project, Karrat 97, was carried out in 1997 in the Uummannaq region 70°30′–72°30′N (Steenfelt et al. 1998a). Both are joint projects between the Geological Survey of Denmark and Greenland (GEUS) and the Bureau of Minerals and Petroleum (BMP), Government of Greenland, and wholly funded by the latter. The main purpose of the projects is to attract the interest of the mining industry. The field work comprised systematic drainage sampling, reconnaissance mineral exploration and spectroradiometric measurements of rock surfaces.


Author(s):  
E. Punithalingam

Abstract A description is provided for Ascochyta desmazieresii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Lolium multiflorum and L. perenne. DISEASE: Glume and leaf spot of Italian and perennial ryegrasses. At first leaf lesions start as small purplish or chocolate-brown spots with a distinct red-purple margin. With time these enlarge, become irregular or elliptical, up to 5 mm long and distinctly visible on both sides of the leaves. Finally the centres of older lesions fade to fawn to straw yellow with numerous pycnidia immersed within the leaf tissue on both sides of the leaves but usually abundant pycnidia occur on the lower side. GEOGRAPHICAL DISTRIBUTION: Asia (Japan); Europe (Belgium, Czechoslovakia, Denmark, France, Irish Republic, UK); N. America (USA, California, Oregon, Washington); S. America (Chile, Brazil). TRANSMISSION: No specific studies reported; infection is presumably spread by air-borne conidia in wet weather or heavy dews. The fungus is also probably carried over on crop residues and debris in soil.


Author(s):  
T. V. Andrianova

Abstract A description is provided for Septoria antirrhini. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Leaf spot, leaf drying, defoliation. HOSTS: Antirrhinum antirrhiniflorum, A. majus, A. siculum (Scrophulariaceae). GEOGRAPHICAL DISTRIBUTION: AFRICA: South Africa. NORTH AMERICA: Canada, USA. SOUTH AMERICA: Chile, Colombia. ASIA: Armenia, Azerbaijan, China, Iran, Israel. AUSTRALASIA: Australia, New Zealand. EUROPE: Bulgaria, Czech Republic, Estonia, France, Germany, Great Britain, Hungary, Ireland, Italy, Netherlands, Portugal, Romania, Ukraine, former Yugoslavia. TRANSMISSION: Not reported, but almost certainly by airborne, splash-dispersed conidia from infected plant debris and seed stocks. The disease is significantly more severe under wet weather conditions (SINADSKIY et al., 1985).


1894 ◽  
Vol 1 (9) ◽  
pp. 394-399 ◽  
Author(s):  
J. Burr Tyrrell

In the extreme northernmost part of Canada, lying between North Latitudes 56° and 68° and West Longitudes 88° and 112°, is an area of about 400,000 square miles, which had up to the past two years remained geologically unexplored.In 1892 the Director of the Geological Survey of Canada sent the writer to explore the country north of Churchill River, and south-west of Lake Athabasca;in1893 the exploration was continued northward, along the north shore of Athabasca Lake


1982 ◽  
Vol 1 (18) ◽  
pp. 114
Author(s):  
V.K. Shah

Seawalls, revetments and groynes designed to protect shorelines require normally timber, natural stone or concrete for their construction. In Tuktoyaktuk, none of these materials is available and to avoid excessive costs, an alternative form of construction, using long sausage shaped tubes filled with sand, was devised on an experimental basis. Tuktoyaktuk is situated on the eastern side of Kugmallit Bay in the Western Arctic at north latitude of 69 deg. 27' and west longitude of 133 deg. 02'. It is approximately 90 miles north of Inuvik and 1450 miles northwest of Edmonton (figure 1). The area is mainly comprised of a long, narrow, boot-shaped peninsula oriented in approximately north-south direction, a complex lagoon, which has been developed as a harbour, east of the peninsula and an island straddling the mouth of the lagoon (figure 2). Certain dwellings exist at the southern and southeasterly shores of Tuktoyaktuk Harbour. A large majority of the inhabitants reside in settlements developed on the peninsula and the southern area linking the peninsula with the mainland. Tuktoyaktuk is used as a transfer point linking the Mackenzie River barge transport with coastwide shipping serving the western arctic seaboard and inland settlements and bases. As a result of this the TCJK settlement has grown to be the largest of the western arctic coast settlements.


2019 ◽  
Vol 95 (2) ◽  
pp. 144-149 ◽  
Author(s):  
Nikolay A. Bogdanov

There are presented the results of a 21-year-old (1991-2012) monitoring of Hg concentrations and amounts of metals, including heavy and toxic, Zc(MnCrVNiCoCuAgZnPbSnMo) in soils of the zone of the exposure to emissions from Astrakhan gas complex (AGK), working from 1987 within a radius of 50 km. On those criteria for the period over 1997-2012 there was revealed a steady deterioration of ecological-hygienic conditions of the lands in the control zone. The spatial variability of this condition is largely controlled by the dispersion of the emissions by the prevailing easterly and southeasterly winds. The content of Hg in 2007, remote from AGK by 15 km, increased by 6-8 times on the leeward north-west territories, where the accumulation of the toxicant was 2.5 times more pronounced than in the windward Eastern and North-Eastern side. The significant role in the deterioration of sanitary-ecological state of the territory of the sanitary protection zone when dealing with Hg-containing (70-100 mkg/kg) commodity grey belongs to reblowing of particles and their eolian spread from places of storage, loading and transportation. In separate halos the content of Hg in the soil has reached 285 mkg/kg and become closer to the "target" safe level (300 mkg/ kg), adopted in Western Europe (zone AGK-30 km). The total amount of metals as in the near (up to 5 km of sanitary protection), so far (5-50 km) zones as in background sites has increased steadily. By 2012 in some places, remoted up to 30 km from AGK there were fixed already hygienically dangerous levels of total metals accumulation (up to Zc =34)


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