Late Quaternary Vegetational History of the North York Moors VII. Pollen Diagrams from the Eastern-Central Area

1979 ◽  
Vol 6 (1) ◽  
pp. 63 ◽  
Author(s):  
M. A. Atherden
Keyword(s):  
Late Quaternary ◽  
Central Area ◽  
The North ◽  
Pollen Diagrams ◽  
History Of

Religion

2010 ◽  
Author(s):  
Carla Gardina Pestana
Keyword(s):  
North America ◽  
Early Modern ◽  
Atlantic World ◽  
Central Africa ◽  
Central Area ◽  
Protestant Reformation ◽  
The North ◽  
History Of ◽  
The Caribbean ◽  
South Portugal

Religion shaped the early modern Atlantic world in many ways. Although Iberian expansion began before the Protestant Reformation, Europe soon divided between Protestant and Catholic, and this division created a context for European understandings of the purpose of expansion. With permission from the pope to evangelize outside the Old World, the Spanish and the Portuguese split the extra-European world between them; Spain was responsible for most of the Americas (excluding only the area that would become Brazil), while Portugal took Brazil and Africa (as well as Asia). Soon representatives of each kingdom were at work, conquering, colonizing, and evangelizing. Protestantism, although it arrived late in the contest for colonies and trade in this New World, was central to Spanish understanding of its work; evangelizing the native peoples of the Americas would add additional souls to the church, making up for those who had been lost to the Protestant Reformation. When Protestants finally became involved in colonizing the Americas and trading with Africa, they similarly understood their role as combating the reach and influence of their Catholic rivals. If in 1600 the European presence outside of Europe was overwhelmingly Catholic, by 1700 a map of the spread of Christianity showed varied results. Spain controlled the central area of the Americas, including much of South America and the Caribbean, all of Central America, and all the southern area of North America (from Florida and New Mexico south). Portugal had Brazil, while Catholic France held Quebec to the north and selected islands in the Caribbean. The Protestant presence was predominantly British, and included eastern North America between Quebec and Florida as well as some islands in the Caribbean. The Protestant Dutch also held island colonies and a South American outpost. West Africa and West Central Africa hosted trading forts controlled by most of these European powers, from which were shipped slaves as well as trade goods. The religious rivalries of early modern Europe had been effectively exported. Every faith represented along the shores of the Atlantic prior to contact would participate in the intermixing that occurred afterward. The history of religion in the Atlantic world therefore explores the variety of traditions within that world and the effects of the circulation, transplantation, and encounter of these various faiths.

Molecular systematics and phylogeography of a widespread Neotropical avian lineage: evidence for cryptic speciation with protracted gene flow throughout the Late Quaternary

2020 ◽  
Author(s):  
Leonardo S Miranda ◽  
Bernardo O Prestes ◽  
Alexandre Aleixo
Keyword(s):  
Gene Flow ◽  
Incomplete Lineage Sorting ◽  
Late Quaternary ◽  
Integrative Approach ◽  
Lineage Sorting ◽  
Distribution Models ◽  
The North ◽  
History Of ◽  
Andean South America ◽  
Spatio Temporal

Abstract Here we use an integrative approach, including coalescent-based methods, isolation–migration and species distribution models, to infer population structure, divergence times and diversification in the two species of the genus Cymbilaimus (Aves, Thamnophilidae). Our results support a recent and rapid diversification with both incomplete lineage sorting and gene flow shaping the evolutionary history of Cymbilaimus. The spatio-temporal pattern of cladogenesis suggests that Cymbilaimus originated in the north/western portion of cis-Andean South America and then diversified into the Brazilian Shield and Central America after consolidation of the modern Amazonian drainage and the Andean range. This evolutionary scenario is explained by cycles of range expansion and dispersal, followed by isolation, and recurrent gene flow, during the last 1.2 Myr. Our results agree with those recently reported for other closely related suboscine lineages, whereby the window of introgression between closely related taxa remains open for up to a few million years after their original split. In Cymbilaimus, introgression was recurrent between C. lineatus and C. sanctaemariae, even after they acquired vocal and ecological differentiation, supporting the claim that at least in Neotropical suboscines, full reproductive compatibility may take millions of years to evolve and cannot be interpreted as synonymous with a lack of speciation.

Problems of inertia and threshold related to post-Glacial habitat changes

1965 ◽  
Vol 161 (984) ◽  
pp. 331-342 ◽  
Keyword(s):  
Late Quaternary ◽  
Great Distance ◽  
Radiocarbon Age ◽  
Habitat Changes ◽  
Pollen Zone ◽  
Relative Chronology ◽  
Pollen Diagrams ◽  
Circular Argument ◽  
History Of

Most of the major late-Quaternary vegetational changes deduced from the study of pollen diagrams have generally been supposed to have been brought about by climatic change. The assumption has also been made that widespread climatically controlled vegetational changes are likely to have been broadly synchronous (cf. for instance Godwin 1956, p. 57). Recently, however, it has become clear that differences of migration rate and the rates of pedogenesis should be given more attention; Faegri, in particular, has made this point very strongly with reference to the history of the Scandinavian flora (Faegri 1963). In addition, it is appropriate to note that Iversen (1960, p. 9) has questioned whether we can attach any climatic significance to the pollen zone transitions up to the beginning of the Atlantic period and whether they will prove to be synchronous over any great distance. Nevertheless, the assumption that the well-marked vegetational changes in a small area such as the British Isles are likely to have been synchronous has sufficed to allow the establishment of a useful relative chronology for archaeological and other purposes. While the radiocarbon age estimations so far obtained do not on the whole confute the assumptions, there are a number of exceptions (cf. Godwin 1960; Godwin & Willis 1959, 1962; McAulay & Watts 1961, etc.). For phytogeographical purposes, however, it is clearly to argue in a circle to use a chronology based on vegetational evidence; we must equally be on our guard against the circular argument in discussing the role of habitat changes in palaeoecology.

Spatio-temporal behaviour of continental transform faults: implications from the late Quaternary slip history of the North Anatolian Fault, Turkey

2019 ◽  
Vol 56 (11) ◽  
pp. 1218-1238 ◽  
Author(s):  
Cengiz Zabcı
Keyword(s):  
Shear Zone ◽  
Late Quaternary ◽  
Slip Rate ◽  
Secondary Structures ◽  
North Anatolian Fault ◽  
Marmara Region ◽  
Temporal Behaviour ◽  
The North ◽  
Slip History ◽  
History Of

The slip history of the North Anatolian Fault (NAF) is constrained by displacement and age data for the last 550 ka. First, I classified all available geological estimates as members of three groups: Model I for the eastern, Model II for the central, and Model III for the western segments where the North Anatolian Shear Zone gradually widens from east to west. The short-term uniform slip solutions yield similar results, 17.5 +4/–3.5 mm/a, 18.9 +3.7/–3.3 mm/a, and 16.9 +1.2/–1.1 mm/a from east to the west. Although these model rates do not show any significant spatial variations among themselves, the correlation with geodetic estimates, ranging between 15 mm/a and 28 mm/a for different sections of the NAF, displays significant discrepancies especially for the central and western segments of the fault. Discrepancies suggest that most strain is accumulated along the NAF, but some portion of it is distributed along secondary structures of the North Anatolian Shear Zone. The deformation rate is constant at least for the last 195 ka, whereas the limited number of data show strain transfer from northern to the southern strand between 195 and 320 ka BP in the Marmara Region when the incremental slip rate decreases to 13.2 +3.1/–2.9 mm/a for the northern strand of the NAF. Considering the possible uncertainties of incremental displacements and their timings, more studies on slip rate are needed at different sites, including major structural elements of the North Anatolian Shear Zone. Although most of the strain is localized along the main displacement zone, the NAF, secondary structures are still capable of generating earthquakes that can hardly reach Mw 7.

Sign in / Sign up

Export Citation Format

Share Document