scholarly journals World status of wild Rangifer tarandus populations

Rangifer ◽  
1986 ◽  
Vol 6 (2) ◽  
pp. 19 ◽  
Author(s):  
T. Mark Williams ◽  
Douglas C. Heard
Keyword(s):  
North America ◽  
North American ◽  
Aerial Photography ◽  
Rangifer Tarandus ◽  
Population Estimates ◽  
World Population ◽  
South Georgia ◽  
The World ◽  
Strip Transect

We recognized 184 herds of wild Rangifer tarandus, 102 in North America, 55 in Europe, 24 in Asia and 3 on South Georgia. Seventy-five percent of the world population of 3.3 to 3.9 million animals occurred in nine herds. All seven herds larger than 120 000 animals were censused by some means of aerial photography and all were increasing. Herds between 20 000 and 120 000 were most often censused using aerial strip transect methods, while total counts were usually employed to census smaller herds. The most pronounced changes in Rangifer herd status between 1979 and 1985 occurred in North America where population "estimates for five herds increased by a total of about one million animals. Part of this increase is attributable to a change from visual to photographic surveys. Eighty-three percent of North American, 88% of European, and 68% of Asian herds were stable or increasing.

The Natural Groups of Species in the Genus Ips De Geer (Coleoptera: Scolytidae) in North America

1963 ◽  
Vol 95 (5) ◽  
pp. 508-516 ◽  
Author(s):  
G. R. Hopping
Keyword(s):  
North America ◽  
North American ◽  
Related Species ◽  
North American Species ◽  
Closely Related Species ◽  
The North ◽  
The World ◽  
Group Relationships ◽  
Natural Groups

AbstractThe genus Ips is one of four closely related genera in the tribe Ipini, sub-tribe Ipina (De Geer 1775, Balachowsky 1949, Nunberg 1954, Hopping 1963). There are now 32 species of Ips recognized in North America, with a few more as yet undescribed. This paper defines the groups of closely related species with observations on the group relationships of species from other parts of the world. Work is in progress to define the North American species in each group.

scholarly journals Studies in bank voles reveal strain differences between chronic wasting disease prions from Norway and North America

2020 ◽  
Vol 117 (49) ◽  
pp. 31417-31426 ◽  
Author(s):  
Romolo Nonno ◽  
Michele A. Di Bari ◽  
Laura Pirisinu ◽  
Claudia D’Agostino ◽  
Ilaria Vanni ◽  
...  
Keyword(s):  
North America ◽  
North American ◽  
Rangifer Tarandus ◽  
Chronic Wasting Disease ◽  
Strain Differences ◽  
Myodes Glareolus ◽  
Wasting Disease ◽  
Proximate Cause ◽  
Bank Voles ◽  
Regional Deposition

Chronic wasting disease (CWD) is a relentless epidemic disorder caused by infectious prions that threatens the survival of cervid populations and raises increasing public health concerns in North America. In Europe, CWD was detected for the first time in wild Norwegian reindeer (Rangifer tarandus) and moose (Alces alces) in 2016. In this study, we aimed at comparing the strain properties of CWD prions derived from different cervid species in Norway and North America. Using a classical strain typing approach involving transmission and adaptation to bank voles (Myodes glareolus), we found that prions causing CWD in Norway induced incubation times, neuropathology, regional deposition of misfolded prion protein aggregates in the brain, and size of their protease-resistant core, different from those that characterize North American CWD. These findings show that CWD prion strains affecting Norwegian cervids are distinct from those found in North America, implying that the highly contagious North American CWD prions are not the proximate cause of the newly discovered Norwegian CWD cases. In addition, Norwegian CWD isolates showed an unexpected strain variability, with reindeer and moose being caused by different CWD strains. Our findings shed light on the origin of emergent European CWD, have significant implications for understanding the nature and the ecology of CWD in Europe, and highlight the need to assess the zoonotic potential of the new CWD strains detected in Europe.

A Portrait of North American Urban Historians

2018 ◽  
Vol 45 (6) ◽  
pp. 1237-1245
Author(s):  
Richard Harris
Keyword(s):  
North America ◽  
North American ◽  
Urban History ◽  
Frame Of Reference ◽  
Economic Effects ◽  
The World ◽  
Age Profile ◽  
Race Ethnicity

A survey of members of the Urban History Association (UHA) undertaken in March 2017 provides information about the character, views, and prospects of urban history in North America. Most UHA members are professional historians. Their age profile is balanced; women and minorities are underrepresented, though their age profile indicates that members will become more diverse. They are researching cities around the world, but focus mainly on the larger U.S. cities. Thematically, their main interests are in planning/design, race/ethnicity, politics, and housing, in that order. Most situate their work on U.S. cities within a national frame of reference; only half believe that there is something distinctively urban about cities. Those who do tend to highlight social, political, and cultural, as opposed to economic, effects. Their intellectual influences are primarily other urban historians rather than more theoretically oriented writers.

The Caribou/Wild Reindeer as a Human Resource

1972 ◽  
Vol 37 (3) ◽  
pp. 339-368 ◽  
Author(s):  
Ernest S. Burch
Keyword(s):  
North America ◽  
Human Resource ◽  
North American ◽  
Rangifer Tarandus ◽  
Human Populations ◽  
Resource Base ◽  
Caribou Hunting ◽  
Wild Reindeer ◽  
Conventional Picture

AbstractThe caribou/wild reindeer (Rangifer tarandus) has been a major resource for many human populations in northern North America and Eurasia for tens of thousands of years. The species is generally represented by prehistorians as providing an ample, easily exploited, and highly reliable resource base for humans. In this paper a number of specific assumptions leading to this view are examined in the light of new data on North American caribou and caribou-hunting Eskimo groups. The conventional picture is found to be largely untenable.

scholarly journals A Review of North American Isoetes engelmannii (Isoetaceae) complex hybrids, including the description of I. × fernaldii, hyb. nov. and I. × karenae, hyb. nov.

Webbia ◽  
2020 ◽  
Vol 75 (1) ◽  
pp. 35-50 ◽  
Author(s):  
Daniel Francis Brunton ◽  
Paul Clayton Sokoloff
Keyword(s):  
North America ◽  
North American ◽  
Original Description ◽  
Eastern North America ◽  
Cytological Evidence ◽  
The World ◽  
In The Wild

The Isoetes engelmannii complex of eastern North America consists of 30 taxa including 13 named species. Nine of the 17 hybrids within the complex (the largest group of Isoetes hybrids in the world) have been formally described. Those named hybrids are reviewed here in light of recent additions to and enhancements of the morphological and cytological evidence employed in their original description. The pedigree of three of these, I. ×brittonii, I. ×bruntonii and I. ×carltaylorii, is updated and clarified. Formal descriptions are proposed for two additional taxa: I. ×fernaldii, hyb. nov. (I. engelmannii × I. hyemalis) and I. ×karenae, hyb. nov. (I. appalachiana × engelmannii). The potential for a further eight hybrid combinations to occur in the wild is also addressed.

From Digital Divide to Digital Dividend

2005 ◽  
pp. 1226-1230
Author(s):  
Nikhilesh Dholakia ◽  
Nir Kshetri
Keyword(s):  
Developing Countries ◽  
North America ◽  
Digital Divide ◽  
Asia Pacific ◽  
World Population ◽  
The World ◽  
Business To Consumer ◽  
Wide Gap ◽  
Telecommunications Services ◽  
Digital Dividend

Despite rapidly falling costs of hardware, software, and telecommunications services, a wide gap persists between rich and poor nations in terms of their capabilities of accessing, delivering, and exchanging information in digital forms (Carter & Grieco, 2000). Developing countries, comprising over 81% of the world population, account for a tiny fraction of global e-commerce. An estimate suggests that 99.9% of business-to-consumer e-commerce in 2003 took place in the developed regions of North America, Europe, and Asia Pacific (Computer Economics, 2000).

Western Civilization: Anatomy and Pathology

1981 ◽  
Vol 7 (2) ◽  
pp. 145-169 ◽  
Author(s):  
Johan Galtung
Keyword(s):  
North America ◽  
Eastern Europe ◽  
North American ◽  
Western Civilization ◽  
Negative Effects ◽  
East European ◽  
Space And Time ◽  
External Influences ◽  
The World ◽  
Western European

In this article, the author assumes that Western civilization (found in Western and Eastern Europe, North America, the USSR, and Muslim societies) has been dominant in the world, and he explores the positive and negative effects of this civilizational penetration on Hindu, Sinic and Nipponic traditions. Approaching the investigation from a cosmological perspective, he argues that civilizations are in incessant interaction – lending, borrowing, sending, receiving, imposing and submitting as people, things and ideas move in space and time. The consequences of interaction are twofold: (1) it gives rise to similarities in deep structures and ideologies of otherwise dissimilar civilizations; (2) it could mitigate the dominance of one civilization across time. Applied to Western penetration, this analysis suggests that during a period of expansion, the dominant civilization transmits its central themes to civilizations unable to resist penetration through isolation (the Sinic case) or through economic-military countermeasures (the Nipponic case). (Hindu civilization is a class apart, since its extraordinary richness enables it to both absorb and modify external influences.) As the dominant civilization becomes overextended, it enters a period of contraction marked by some openness to civilizations in the expansion mode. This process is iterative. The author concludes that Western European and North American aspects of Western civilization (the inner West) are in contraction while Islam, East European and Soviet forms are expanding, and the remaining civilizations are occidentalizing. Thus, the inner West, which is basically dominance-oriented and exploitative in the expansion mode, may now be ready to enter a dialogue with less aggressive cosmologies, with potentially important consequences for global civilization.

scholarly journals THE NORTH AMERICAN SPECIES OF NEMISTRINIDÆ

1883 ◽  
Vol 15 (4) ◽  
pp. 69-72 ◽  
Author(s):  
S. W. Williston
Keyword(s):  
North America ◽  
South America ◽  
North American ◽  
North American Species ◽  
Southern Europe ◽  
The North ◽  
The Family ◽  
The World ◽  
General Appearance

The family of Nemistrinidæ comprises throughout the world one hundred and ten described species, six or seven of which are from Southern Europe and three from North America; the remainder nearly equally distributed in Asia, Africa, Australia and South America. In their habits, so far as known, the species approach the Bombylidæ most closely, as also do many in their general appearance. Structurally they are of interest to the Dipterologist, on account of their intricate and diverse neuration, which in some species is almost Neuropter-like in the reticulation.Doubtless the number of our species will be augmented by future discoveries, but yet we can never expect a very material increase.

Working Internationally with Indigenous Groups

2014 ◽  
Vol 2 (4) ◽  
pp. 366-374 ◽  
Author(s):  
Joe Watkins
Keyword(s):  
Native American ◽  
North America ◽  
First Nations ◽  
North American ◽  
Indigenous Communities ◽  
Archaeological Record ◽  
Native Communities ◽  
Indigenous Groups ◽  
The World

AbstractNorth American archaeologists working with Native American or First Nations communities, whose culture often forms the basis of the archaeological record, are becoming increasingly aware that they face a differing set of concerns and issues than those archaeologists who work with non-Native communities. Although their work is not as widely reported in the literature, North American archaeologists who have been fortunate enough to conduct research with Indigenous communities in other parts of the world are often overwhelmed by the variety of issues that may crop up. They often find that their experiences highlight the challenges but also the fulfillment involved in working with Indigenous groups. In the following paper, I offer suggestions based on practices that helped to alleviate issues I faced when working internationally. By broadening the discourse concerning working with Indigenous groups, I hope that these suggestions may also prove relevant to improving the practice of archaeology in North America as well.

scholarly journals Calving photocensus of the Rivière George Caribou Herd and comparison with an independent census

Rangifer ◽  
1996 ◽  
Vol 16 (4) ◽  
pp. 283 ◽  
Author(s):  
Serge Couturier ◽  
Réhaume Courtois ◽  
Hélène Crépeau ◽  
Louis-Paul Rivest ◽  
Stuart Luttich
Keyword(s):  
Rangifer Tarandus ◽  
Sampling Design ◽  
Herd Size ◽  
Population Estimates ◽  
Female Adult ◽  
The World ◽  
Calf Survival ◽  
Valid Estimate ◽  
Sampling Problems ◽  
Size Estimates

Vertical photographs of the calving grounds have been used since 1984 to estimate the caribou (Rangifer tarandus) population of the Rivière George Caribou Herd (RGCH) in Northern Québec and Labrador. In spite of large confidence intervals, the 1984 and 1988 estimates suggested that the herd stabilized at more than 650 000 caribou (fall estimate including calves) making the RGCH the largest caribou herd in the world. Between 1984 and 1990, studies suggested that the former rapid growth of the herd deteriorated the calving and summer habitats. This poor habitat quality affected physical condition, pregnancy rate and calf survival. It was important to have a valid estimate of the herd size and a photocensus was done in June 1993. Contrary to previous censuses, a slightly different sampling design was applied in 1993. Two methods were used to estimate the number of females in the June population. In the first method, the number of females was derived from the estimated number of calves on the photographs and from the June female/calf ratio. The second method was used in the previous census and is based on the number of adults on the photos and on the June female/adult ratio. It is suggested that the first method of estimating female abundance in June is better due to sampling problems associated with a strong adult sex segregation during calving. From the first method, the herd size in October 1993 was estimated at 583 829 adults (±33.79%) and at 749 869 caribou including calves (±33.15%) while the second method provided estimates of 764 221 adults (±23.55%) and 981 565 caribou including calves (±22.64%). It was possible to compare those population estimates with an independent census. In July 1993, an oblique photocensus of the post-calving aggregations was conducted by Russell et al. (1996). A new analysis of their raw data provided an estimate of 608 384 adults (±14.35%). Both estimates from the June and July photocensus were combined. From the first and second method respectively, combined herd size estimates were 775 891 (±13.40%) and 823 375 (±12.36%) caribou including calves. The management implications are discussed and it is emphasized that the herd is still underharvested.

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