scholarly journals Piecing together the biogeographic history of Chenopodium vulvaria L. using botanical literature and collections

2014 ◽  
Author(s):  
Quentin J Groom
Keyword(s):  
Environmental History ◽  
Historical Analysis ◽  
Northern Europe ◽  
Introduction Pathways ◽  
The North ◽  
Climate Niche ◽  
Biogeographic History ◽  
Suitable Habitats ◽  
Conservation Concern ◽  
Alien Weed

This study demonstrates the value of legacy literature and historic collections as a source of data on environmental history. Chenopodium vulvaria L. has declined in Northern Europe and is of conservation concern in several countries, whereas in other countries it has naturalised and is considered an alien weed. It is hypothesised that much of its former distribution was the result of repeated introductions from its native range in southern Europe and that its decline in northern Europe is the result of habitat change and a reduction in number of propagules imported to the north. An historical analysis of its ecology and distribution was conducted by mining legacy literature and historic botanical collections. Text analysis of habitat descriptions written on specimens and published in botanical literature covering a period of more than 200 years indicate that the habitat and introduction pathways of C. vulvaria have changed with time. Using the naturalised alien range in a climate niche model it is possible to project the range in Europe. By comparing this predicted model with a similar model created from all observations it is clear that there is a large discrepancy between the realised and predicted distributions. It is concluded that if C. vulvaria was native to northern Europe, then it was only ever a rare species, however it was more common in the 18th and 19th centuries due to a combination of repeated introductions and the creation of suitable habitats by people.

scholarly journals Piecing together the biogeographic history of Chenopodium vulvaria L. using botanical literature and collections

2014 ◽  
Author(s):  
Quentin J Groom
Keyword(s):  
Environmental History ◽  
Historical Analysis ◽  
Northern Europe ◽  
Introduction Pathways ◽  
The North ◽  
Climate Niche ◽  
Biogeographic History ◽  
Suitable Habitats ◽  
Conservation Concern ◽  
Alien Weed

This study demonstrates the value of legacy literature and historic collections as a source of data on environmental history. Chenopodium vulvaria L. has declined in Northern Europe and is of conservation concern in several countries, whereas in other countries it has naturalised and is considered an alien weed. It is hypothesised that much of its former distribution was the result of repeated introductions from its native range in southern Europe and that its decline in northern Europe is the result of habitat change and a reduction in number of propagules imported to the north. An historical analysis of its ecology and distribution was conducted by mining legacy literature and historic botanical collections. Text analysis of habitat descriptions written on specimens and published in botanical literature covering a period of more than 200 years indicate that the habitat and introduction pathways of C. vulvaria have changed with time. Using the naturalised alien range in a climate niche model it is possible to project the range in Europe. By comparing this predicted model with a similar model created from all observations it is clear that there is a large discrepancy between the realised and predicted distributions. It is concluded that if C. vulvaria was native to northern Europe, then it was only ever a rare species, however it was more common in the 18th and 19th centuries due to a combination of repeated introductions and the creation of suitable habitats by people.

A multiproxy record of sedimentation, pedogenesis, and environmental history in the north of West Siberia during the late Pleistocene based on the Belaya Gora section

2020 ◽  
pp. 1-19
Author(s):  
Vladimir Sheinkman ◽  
Sergey Sedov ◽  
Lyudmila S. Shumilovskikh ◽  
Elena Bezrukova ◽  
Dmitriy Dobrynin ◽  
...  
Keyword(s):  
Environmental History ◽  
Boreal Forests ◽  
West Siberia ◽  
Northern Eurasia ◽  
Partial Recovery ◽  
Radiocarbon Dates ◽  
Oxygen Isotope Stage ◽  
Mis 3 ◽  
The North ◽  
Mis 5

Abstract Recent revision of the Pleistocene glaciation boundaries in northern Eurasia has encouraged the search for nonglacial geological records of the environmental history of northern West Siberia. We studied an alluvial paleosol-sedimentary sequence of the high terrace of the Vakh River (middle Ob basin) to extract the indicators of environmental change since Marine Oxygen Isotope Stage (MIS) 6. Two levels of the buried paleosols are attributed to MIS 5 and MIS 3, as evidenced by U/Th and radiocarbon dates. Palynological and pedogenetic characteristics of the lower pedocomplex recorded the climate fluctuations during MIS 5, from the Picea-Larix taiga environment during MIS 5e to the establishment of the tundra-steppe environment due to the cooling of MIS 5d or MIS 5b and partial recovery of boreal forests with Picea and Pinus in MIS 5c or MIS 5a. The upper paleosol level shows signs of cryogenic hydromorphic pedogenesis corresponding to the tundra landscape, with permafrost during MIS 3. Boulders incorporated in a laminated alluvial deposit between the paleosols are dropstones brought from the Enisei valley by ice rafting during the cold MIS 4. An abundance of eolian morphostructures on quartz grains from the sediments that overly the upper paleosol suggests a cold, dry, and windy environment during the MIS 2 cryochron.

scholarly journals Recreational Harvest of Sharks and Rays in Western Australia Is Only a Minor Component of the Total Harvest

2021 ◽  
Vol 13 (11) ◽  
pp. 6215
Author(s):  
Matias Braccini ◽  
Eva Lai ◽  
Karina Ryan ◽  
Stephen Taylor
Keyword(s):  
Western Australia ◽  
Minor Component ◽  
The North ◽  
Commercial Harvest ◽  
Unknown Status ◽  
Reef Sharks ◽  
Conservation Concern ◽  
Taxonomic Groups ◽  
A Minor ◽  
Port Jackson

Sharks and rays are a global conservation concern with an increasing number of species considered at risk of extinction, mostly due to overfishing. Although the recreational harvest of sharks and rays is poorly documented and generally minimal, it can be comparable to the commercial harvest. In this study, we quantified the recreational harvest of sharks and rays in Western Australia, a region with a marine coastline greater than 20,000 km. A total of 33 species/taxonomic groups were identified, with the harvest dominated by dusky and bronze whalers, blacktip reef sharks, gummy sharks, Port Jackson sharks, wobbegongs, and rays and skates. Eighty-five percent of individuals were released with an unknown status (alive or dead). We found a latitudinal gradient of species composition, with tropical and subtropical species of the genus Carcharhinus dominating in the north and temperate species from a range of families dominating in the south. Overall, our findings showed that the recreational harvest was negligible when compared with commercial landings.

The Origin of Neolithic Culture in Northern Europe

Antiquity ◽  
1949 ◽  
Vol 23 (91) ◽  
pp. 129-135 ◽  
Author(s):  
V. G. Childe
Keyword(s):  
Northern Europe ◽  
Southern Sweden ◽  
The South ◽  
The West ◽  
The North ◽  
Neolithic Culture ◽  
Northwest Germany ◽  
Shell Mounds ◽  
Expansive Group ◽  
Megalithic Tombs

Till 1948 the coherent record of farming in Northern Europe began with the neolithic culture represented in the Danish dysser (‘dolmens’) and most readily defined by the funnel-necked beakers, collared flasks and ‘amphorae’ found therein. As early as 1910 Gustav Kossinna had remarked that these distinctive ceramic types, and accordingly the culture they defined, were not confined to the West Baltic coastlands, but recurred in the valleys of the Upper Vistula and Oder to the east, to the south as far as the Upper Elbe and in northwest Germany and Holland too. He saw in this distribution evidence for the first expansion of Urindogermanen from their cradle in the Cimbrian peninsula. In the sequel Åberg filled in the documentation of this expansion with fresh spots on the distribution map and Kossinna himself distinguished typologically four main provinces or geographical groups—the Northern, Eastern, Southern and Western. Finally Jazdrzewski gave a standard account of the whole content of what had come to be called Kultura puharów lejkowatych, Trichterbecherkultur, or Tragtbaegerkulturen. As ‘Funnel-necked-beaker culture’ is a clumsy expression and English terminology is already overloaded with ‘beakers’, I shall use the term ‘First Northern’.The orgin of this vigorous and expansive group of cultivators and herdsmen has always been an enigma. Not even Kossinna imagined that the savages of the Ertebølle shell-mounds spontaneously began cultivating cereals and breeding sheep in Denmark. As dysser were regarded as megalithic tombs and as megaliths are Atlantic phenomena, he supposed that the bases of the neolithic economy were introduced from the West together with the ‘megalithic idea’. But the First Northern Farmers of the South and East groups did not build megalithic tombs. Moreover, in the last ten years an extension of the North group across southern Sweden as far as Södermannland has come to light, and these farmers too, though they used collared flasks and funnel-necked beakers, built no dolmens either. In any case there was nothing Western about the pottery from the Danish dysser, and Western types of arrow-head are conspicuously rare in Denmark.

Arctic meteorological operations and counter-operations during world War II

Polar Record ◽  
1983 ◽  
Vol 21 (135) ◽  
pp. 559-567 ◽  
Author(s):  
Franz Selinger ◽  
Alexander Glen
Keyword(s):  
World War Ii ◽  
Atlantic Ocean ◽  
The United States ◽  
Northern Europe ◽  
Free Access ◽  
World War ◽  
The North ◽  
The North Sea ◽  
Northern Atlantic ◽  
Northern Atlantic Ocean

By autumn 1940 the first round of fighting in World War II was over. In northern Europe, German forces occupied Poland, Norway and Denmark. Both sides recognized that further operations demanded naval and air superiority in northern waters. Germany needed free access to the Atlantic Ocean through the North Sea; Britain had to prevent that access, which threatened the lifeline to the United States. More than ever before, it became essential for both sides to have meteorological information from the northern Atlantic Ocean area. Germany's need was especially acute, for the routes for her shipping from ports in Scandinavia traversed enemy-patrolled waters, where foul weather was essential for evasion.

Population Control in the “Global North”?: Canada’s Response to Indigenous Reproductive Rights and Neo-Eugenics

2021 ◽  
Vol 102 (s3) ◽  
pp. s876-s902
Author(s):  
Erika Dyck ◽  
Maureen Lux
Keyword(s):  
Family Planning ◽  
Birth Control ◽  
Reproductive Rights ◽  
Population Control ◽  
Historical Analysis ◽  
Access To Health Services ◽  
Reproductive Politics ◽  
The North ◽  
Access To Health ◽  
Global North

An historical analysis of reproductive politics in the Canadian North during the 1970s necessitates a careful reading of the local circumstances regarding feminism, sovereignty, language, colonialism, and access to health services, which differed regionally and culturally. These features were conditioned, however, by international discussions on family planning that fixated on the twinned concepts of unchecked population growth and poverty. Language from these debates crept into discussions about reproduction and birth control in northern Canada, producing the state’s logic that, despite low population density, the endemic poverty in the North necessitated aggressive family planning measures.

REGIONAL SECURITY DYNAMICS IN NORTHERN EUROPE (ON THE EXAMPLE OF NORWAY) IN THE LIGHT OF RECENT CHANGES

2020 ◽  
Vol 73 (1) ◽  
pp. 103-111
Author(s):  
D. Kalibekuly ◽  
◽  
Y.S. Chukubayev ◽  
Keyword(s):  
North Atlantic ◽  
Member Country ◽  
Security Policy ◽  
Security System ◽  
Regional Security ◽  
Northern Europe ◽  
The North ◽  
The North Atlantic ◽  
The Impact

The paper examines the dynamics of regional security in Norway as a part of Northern Europe. Being a political and geographical part of the Euro-Atlantic security system. Northern Europe, in its turn, is experiencing the impact of the confrontation between Russia and NATO. Norway's security policy analyzed from the perspective of a regional leader, as a NATO member country participating in the operations of the North Atlantic Alliance and as NATO's northern wing.

Medieval Northern Europe

2019 ◽  
pp. 158-184
Author(s):  
Robert Chazan
Keyword(s):  
Social Relations ◽  
Economic Activity ◽  
Northern Europe ◽  
The Political ◽  
The North ◽  
Jewish Settlement

This chapter considers Jewish settlement in northern Europe. Since Jews were newcomers, and since newcomers are regularly resented by the indigenous populace, much of the new reality and new status was decidedly limited and limiting, inferior to the well-established reality and status enjoyed by Jews in their older areas of habitation. The newness of the Jews of the north stimulated innovative configurations of Jewish economic activity, altered popular imagery of Jews, created difficult social relations between the Jews and their non-Jewish neighbors, fostered altered Church stances toward Judaism and Jews, and fashioned new relationships between the political authorities and their Jewish clients.

scholarly journals Genome-wide sequence-based genotyping supports a nonhybrid origin of Castanea alabamensis

2019 ◽  
Author(s):  
M. Taylor Perkins ◽  
Tetyana Zhebentyayeva ◽  
Paul H. Sisco ◽  
J. Hill Craddock
Keyword(s):  
North American ◽  
Distinct Group ◽  
Morphological Diversity ◽  
Hybrid Origin ◽  
Putative Hybrid ◽  
Eastern United States ◽  
The North ◽  
Snp Data ◽  
Genome Wide ◽  
Conservation Concern

AbstractThe genus Castanea in North America contains multiple tree and shrub taxa of conservation concern. The two species within the group, American chestnut (Castanea dentata) and chinquapin (C. pumila sensu lato), display remarkable morphological diversity across their distributions in the eastern United States and southern Ontario. Previous investigators have hypothesized that hybridization between C. dentata and C. pumila has played an important role in generating morphological variation in wild populations. A putative hybrid taxon, Castanea alabamensis, was identified in northern Alabama in the early 20th century; however, the question of its hybridity has been unresolved. We tested the hypothesized hybrid origin of C. alabamensis using genome-wide sequence-based genotyping of C. alabamensis, all currently recognized North American Castanea taxa, and two Asian Castanea species at >100,000 single-nucleotide polymorphism (SNP) loci. With these data, we generated a high-resolution phylogeny, tested for admixture among taxa, and analyzed population genetic structure of the study taxa. Bayesian clustering and principal components analysis provided no evidence of admixture between C. dentata and C. pumila in C. alabamensis genomes. Phylogenetic analysis of genome-wide SNP data indicated that C. alabamensis forms a distinct group within C. pumila sensu lato. Our results are consistent with the model of a nonhybrid origin for C. alabamensis. Our finding of C. alabamensis as a genetically and morphologically distinct group within the North American chinquapin complex provides further impetus for the study and conservation of the North American Castanea species.

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