scholarly journals A lesson in urban mycology: Critically Endangered polypore Trametes suaveolens (Basidiomycota) re-discovered in Estonia

2018 ◽  
Vol 55 ◽  
pp. 91-95
Author(s):  
Kadri Runnel ◽  
Sulev Järve ◽  
Asko Lõhmus
Keyword(s):  
Threatened Species ◽  
Critically Endangered ◽  
Northern Europe ◽  
City Development ◽  
Salix Fragilis ◽  
Host Trees ◽  
Conservation Measures ◽  
Viable Population ◽  
The Baltic ◽  
Urban Conditions

The conspicuous, mostly willow-inhabiting polypore Trametes suaveolens is a threatened species in Northern Europe. In Estonia it is listed as Critically Endangered, and has not been found since 1984. We report an apparently viable population discovered in Central Tallinn, inhabiting old Salix fragilis and S. alba trees and stumps along ca. 1.5 km of the Baltic seashore. The host trees are prone to removal due to city development and park care reasons. We discuss potential conservation measures for sustaining this unique population in the urban conditions.   Pajutagel (Trametes suaveolens) Eestis taasleitud Peamiselt remmelgatel silmatorkavaid viljakehi moodustav pajutagel (Trametes suaveolens) on Põhja-Euroopas ohustatud liik. Eestis on selle liigi seisund hinnatud kriitiliseks ja viimane dokumenteeritud leid pärineb 1984. aastast. Siinses artiklis kirjeldatakse Tallinnast avastatud populatsiooni, mis asustab u. 1,5 km mereäärsel lõigul rabeda remmelga (Salix fragilis) ja hõberemmelga (S. alba) vanu elus puid ja kände. See asurkond oli 2018. aastal küll elujõuline, kuid tema elupaika ohustavad linna arendustegevus ja pargihooldus. Artiklis esitatakse soovitusi nii pajutagla säilitamiseks Tallinnas kui ka üldiselt puitulagundavate ohustatud seeneliikide kaitseks linnatingimustes.

scholarly journals Variation of growth and phenology traits in poplars planted in clonal trials in Northern Europe—implications for breeding

2021 ◽  
Author(s):  
Anneli Adler ◽  
Almir Karacic ◽  
Ann-Christin Rönnberg Wästljung ◽  
Ulf Johansson ◽  
Kaspars Liepins ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Populus Trichocarpa ◽  
Selection Criterion ◽  
Volume Index ◽  
Northern Europe ◽  
Bud Burst ◽  
The Baltic Sea ◽  
European Climate ◽  
Baltic Sea Region ◽  
The Baltic

AbstractThe increased demand for wood to replace oil-based products with renewable products has lifted focus to the Baltic Sea region where the environment is favorable for woody biomass growth. The aim of this study was to estimate broad-sense heritabilities and genotype-by-environment (G×E) interactions in growth and phenology traits in six climatically different regions in Sweden and the Baltics. We tested the hypothesis that both bud burst and bud set have a significant effect on the early growth of selected poplar clones in Northern Europe. Provenance hybrids of Populus trichocarpa adapted to the Northern European climate were compared to reference clones with adaptation to the Central European climate. The volume index of stemwood was under low to medium genetic control with heritabilities from 0.22 to 0.75. Heritabilities for phenology traits varied between 0.31 and 0.91. Locally chosen elite clones were identified. G×E interactions were analyzed using pairwise comparisons of the trials. Three different breeding zones for poplars between the latitudes of 55° N and 60° N in the Baltic Sea Region were outlined. The studied provenance hybrids with origin from North America offer a great possibility to broaden the area with commercial poplar plantations in Northern Europe and further improve the collection of commercial clones to match local climates. We conclude that phenology is an important selection criterion after growth.

HAS PSYCHOLOGIC MALNUTRITION TAKEN THE PLACE OF RICKETS AND SCURVY IN CONTEMPORARY PEDIATRIC PRACTICE?

PEDIATRICS ◽  
1963 ◽  
Vol 31 (6) ◽  
pp. 909-918
Author(s):  
Nathan B. Talbot
Keyword(s):  
Sixteenth Century ◽  
Lemon Juice ◽  
Climatic Conditions ◽  
Northern Europe ◽  
Scientific Medicine ◽  
Pediatric Practice ◽  
Therapeutic Value ◽  
High Prevalence ◽  
The Baltic

WHILE MEDICAL HISTORIANS cannot provide us with accurate statistics concerning the incidence of rickets and scurvy in centuries past, they leave little room for doubt about the high prevalence of these disorders prior to the advent of modern scientific medicine. Thus, Castiglione has written that in the sixteenth century scurvy raged throughout northern Europe, in Scandinavia, on the shores of the Baltic, and in the interior of Germany. It is interesting to note, however, that Jacques Cartier, whose sailors had been ravaged by scurvy, learned in 1536 from the Indians that the malady could be cured by juices of the almeda tree. This was 200 years before James Lind demonstrated the curative effects of lemon juice in his treatise on scurvy published in 1753 and almost 400 years before ascorbic acid, which was isolated by Szent-Gyorgi in 1928, was recognized to be vitamin C by Waugh and King in 1932. Rickets, likewise, was occurring in a large portion of children prior to the discovery of the existence of vitamin D by Hess, Steinbock, and Windaus in 1918, of its therapeutic value by Mellanby in 1919, of the equivalent role of sunlight by Hess in 1921, and of the chemical composition of the vitamins by Windaus in 1922. But 200 years earlier Friedrick Hoffman had the answer to the control of this disease almost in hand. He attached much importance to climatic conditions as a factor in rickets, noting that if anything is specially powerful in producing this affliction, it is a surrounding atmosphere of cold foggy air. He cited as striking evidence of this the famous emporium of England, London, which he found to be specially apt to produce and foster this disease.

scholarly journals The relation of Gammarus zaddachi Sexton to some other species of Gammarus occurring in fresh, estuarine and marine waters

1942 ◽  
Vol 25 (3) ◽  
pp. 575-606 ◽  
Author(s):  
E. W. Sexton
Keyword(s):  
Distinct Species ◽  
Common Species ◽  
The Arctic ◽  
Northern Europe ◽  
Low Salinity ◽  
Gammarus Zaddachi ◽  
Estuarine Zone ◽  
History Of ◽  
The Difference ◽  
The Baltic

Gammarus zaddachi is perhaps the most prolific and widespread of all the estuarine amphipods known to occur in northern Europe, and inhabiting, as it does, the low-salinity estuarine zone and adjacent coasts, it has come to be recognized in recent ecological work as a ‘salinity indicator’.Unfortunately, there has been constant confusion with the other common species of Gammarus, G. locusta, pulex, and duebeni, which has been greatly complicated by the difference in the appearance of zaddachi according as it lives in a freshwater or a saline habitat. It is shown that this difference is entirely due to the sensory equipment, the greater production of hairs in freshwater conditions, and that the structure of the two ‘forms’ is identical.The history of the species has been carried back as far as I have been able to trace it (1836) with the actual specimens, described in the different papers, and the more important of these papers are discussed. It will be seen that the material examined was derived from every country of northern Europe; from Russia, the White Sea, Crimea, and the Baltic, the coasts of Scandinavia, Germany, including the Hamburg water-supply, Denmark, the Netherlands, Great Britain and Ireland, and France as far up the Loire as Nantes.Detailed descriptions and figures of both forms of G. zaddachi are given; and finally, a comparison is made between the species most commonly confused with it, the Arctic species G. wilkitzkii being included because of a suggestion recently made that it might be, not a distinct species, but merely the Arctic form of zaddachi.

II.—The Scandinavian Ice-Sheet and the Baltic Glacier: a Sceptical Commentary

1899 ◽  
Vol 6 (1) ◽  
pp. 4-13
Author(s):  
Henry H. Howorth
Keyword(s):  
Ice Sheet ◽  
Northern Europe ◽  
Glacial Geology ◽  
Scandinavian Ice Sheet ◽  
The Baltic ◽  
Great Focus ◽  
Geological Magazine

If the paper on the recent geology of Sweden which has already appeared in the GEOLOGICAL MAGAZINE is sound in argument (and I have not met anyone yet who has answered it), it follows that the views ordinarily current in regard to the glacial geology of Northern Europe will have to be greatly modified. Scandinavia is confessedly the great focus and centre of the phenomena which have been interpreted as glacial.

scholarly journals An overlooked threatened species of eagle: Legge's Hawk Eagle Nisaetus kelaarti (Aves: Accipitriformes)

Zootaxa ◽  
2008 ◽  
Vol 1792 (1) ◽  
pp. 54 ◽  
Author(s):  
J. O. GJERSHAUG ◽  
O. H. DISERUD ◽  
P. C. RASMUSSEN ◽  
D. WARAKAGODA
Keyword(s):  
Genetic Differentiation ◽  
Threatened Species ◽  
Species Delimitation ◽  
Taxonomic Status ◽  
Sri Lankan ◽  
Moderate Degree ◽  
Cyt B ◽  
Conservation Measures ◽  
Primary Projection

Species delimitation is fundamental to many areas of biology, and in cases where taxonomic status has not been sufficiently clarified the ramifications can be as serious as extinction due to the failure to implement conservation measures. Since 1931, the Mountain Hawk Eagle Nisaetus (Spizaetus) nipalensis Hodgson has included the allopatric Sri Lankan and southern Indian taxon N. kelaarti (Legge) as a subspecies, and its taxonomic status has not been re-evaluated. We found that N. kelaarti differs considerably from N. nipalensis in its relatively much larger bill and claws and short primary projection, and that it also differs consistently in numerous plumage characters and other mensural characters. Its vocalizations differ distinctly, and an earlier study found a moderate degree of genetic differentiation (4.4% in cyt b and 3.1% in CR) from N. nipalensis. The available evidence thus strongly and unambiguously supports the specific distinctness of N. kelaarti.

scholarly journals The distribution and population of Seychelles Black Paradise-flycatcher Terpsiphone corvina on La Digue: implications for conservation and translocation

2003 ◽  
Vol 13 (4) ◽  
pp. 307-318 ◽  
Author(s):  
Dave Currie ◽  
Rachel Bristol ◽  
James Millett ◽  
Nirmal Jivan Shah
Keyword(s):  
Indian Ocean ◽  
Tree Species ◽  
Western Indian Ocean ◽  
Critically Endangered ◽  
Native Forest ◽  
World Population ◽  
Small Populations ◽  
Freshwater Bodies ◽  
Viable Population ◽  
Equivalent Reduction

The 10 km2 island of La Digue, Republic of Seychelles, western Indian Ocean supports the last viable population of the Critically Endangered Seychelles Black Paradise-flycatcher Terpsiphone corvina. Small populations recorded on adjacent islands since the 1980s appear to be ephemeral and not self-sustaining. We document the results of the first island-wide survey of the flycatcher on La Digue using the playback of conspecific calls at random points. Previous surveys were based largely on counting the number of singing males. The survey was conducted between April and August 2001 and confirmed (i) the current world population is at least 200 individuals (109-145 territories, 218-290 individuals) in a c. 4.4 km2 range, thus accurately quantifying the documented increase in flycatcher numbers since the late 1970s; (ii) territories were more widely distributed than previously recorded and not exclusively associated with coastal plateaux or freshwater bodies, contrary to previous descriptions; and (iii) distribution was determined largely by the presence of high canopy (native) broad-leaved tree species. The importance of canopy height to flycatchers was highlighted by the fact that localized loss of high canopy (native) forest (4%), in a 161 ha study area on the large western plateau, resulted in an equivalent reduction (4%) in the number of territories. In light of our findings we discuss the implications for conservation of the flycatcher on La Digue and its possible translocation.

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