THE OLDEST ANTS ARE CRETACEOUS, NOT EOCENE: COMMENT

2000 ◽  
Vol 132 (5) ◽  
pp. 691-693 ◽  
Author(s):  
David Grimaldi ◽  
Donat Agosti
Keyword(s):  
British Columbia ◽  
Significant Discovery ◽  
Source Of Information ◽  
Early Paleogene

The recent paper by Poinar et al. (1999), entitled “New amber deposit provides evidence of early paleogene extinctions, paleoclimates, and past distributions,” reports a new deposit of fossiliferous amber from the Eocene of British Columbia. This report of a significant discovery by one of the co-authors (Bruce Archibald) is compromised by unexplained statements that ants in this amber are the “earliest unequivocal ants.” They cited unpublished cladograms by Cesare Baroni Urbani as the source of information that showed that previous reports of ants in Cretaceous amber were not really ants.

Status of the Jurassic in the Canadian Cordillera of British Columbia, Alberta, and southern Yukon

1970 ◽  
Vol 7 (1) ◽  
pp. 1-21 ◽  
Author(s):  
Hans Frebold ◽  
H. W. Tipper
Keyword(s):  
British Columbia ◽  
Fossil Record ◽  
Canadian Cordillera ◽  
Tectonic Events ◽  
Source Of Information

Jurassic index fossils of the Canadian Cordillera indicate the presence of some zones of most Jurassic stages. In this report the more important localities are listed, the source of information, published and unpublished, is indicated, and an up-dated correlation chart is presented. The importance of tectonic events and their effect on the completeness of the Jurassic fossil record and on the Jurassic paleogeography are stressed.

Evidence of chemically mediated population recognition in coho salmon (Oncorhynchus kisutch)

1986 ◽  
Vol 64 (1) ◽  
pp. 84-87 ◽  
Author(s):  
Thomas P. Quinn ◽  
Graeme M. Tolson
Keyword(s):  
British Columbia ◽  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
The Other ◽  
Potential Source ◽  
Source Of Information

To test the hypothesis that population-specific pheromones guide adult salmonids to their natal streams, juvenile and adult coho salmon (Oncorhynchus kisutch) were tested for chemosensory responses in two-choice tanks. Coho salmon from Quinsam and Big Qualicum rivers, British Columbia, Canada, distinguished their own population from the other. Tagging evidence indicates that straying between these two rivers and a third, geographically intermediate river seldom occurs. Thus, population-specific chemicals constitute a potential source of information for homing coho salmon, though their role vis-à-vis imprinted odors from other sources could not be evaluated.

Redressing the Rebel Indian Stereotype: Anthropology and Media Policy

2001 ◽  
Vol 23 (2) ◽  
pp. 39-43 ◽  
Author(s):  
Sandra Lambertus
Keyword(s):  
British Columbia ◽  
Media Coverage ◽  
News Story ◽  
Policy Recommendations ◽  
Research Project ◽  
The People ◽  
History Of ◽  
The Media ◽  
Source Of Information ◽  
Media Event

I have recently completed a research project that examined the media coverage of the 1995 Gustafsen Lake standoff in British Columbia. This standoff marked the largest Royal Canadain Mounted Police (RCMP) operation in the history of Canada—and the top national news story for nearly a month. The resolution of the conflict did not alter the British Columbia treaty process, or result in changes of ownership of contested land. However, the media coverage was extreme in its misinformation about the conflict and the characterizations of the people involved. In order to make policy recommendations I had to get "insider knowledge" of the media event. I did this by tracing the media processes and their relations with their most important source of information during the event, the RCMP.

scholarly journals NEW AMBER DEPOSIT PROVIDES EVIDENCE OF EARLY PALEOGENE EXTINCTIONS, PALEOCLIMATES, AND PAST DISTRIBUTIONS

1999 ◽  
Vol 131 (2) ◽  
pp. 171-177 ◽  
Author(s):  
George Poinar ◽  
Bruce Archibald ◽  
Alex Brown
Keyword(s):  
British Columbia ◽  
North America ◽  
Chemical Analysis ◽  
Late Cretaceous ◽  
Middle Eocene ◽  
Life Forms ◽  
Tropical Regions ◽  
Terrestrial Invertebrates ◽  
The Family ◽  
Early Paleogene

AbstractA large, previously unstudied amber deposit in British Columbia dating from the Early to Middle Eocene (50−55 Ma) provides a noteworthy new source of terrestrial invertebrates and other life forms. This deposit contains what are likely the earliest unequivocal ants (members of the family Formicidae), including extinct representatives of Technomyrmex Mayr 1872, Leptothorax Mayr 1855, and Dolichoderus Lund 1831. Discovering Technomyrmex and a corydiinid cockroach, both of which are currently restricted to tropical regions, confirms earlier evidence of warm paleoclimates and past biogeographic distributions in the early Paleogene. Chemical analysis of the amber indicates that the source tree was an araucarian belonging to or near the genus Agathis Salisbury 1807, and demonstrates that this genus survived into the Tertiary in the Northern Hemisphere, since previous records revealed Agathis as a component only of the Cretaceous forests in North America. Comparing the Hat Creek fossil assemblages in this deposit with those from the well-studied western Canadian Late Cretaceous amber deposits offers a unique opportunity to study extinction and speciation events on both sides of the Cretaceous–Tertiary boundary.

NTQ Checklist No. 1: John McGrath

1985 ◽  
Vol 1 (4) ◽  
pp. 400-416 ◽  
Author(s):  
Malcolm Page
Keyword(s):  
British Columbia ◽  
English Department ◽  
British Drama ◽  
Wide Range ◽  
1 John ◽  
Bibliographical Information ◽  
Simon Fraser University ◽  
Source Of Information ◽  
File Series ◽  
Accessible Form

A series of nearly two dozen ‘Theatre Checklists’ appeared as supplements to the old series of Theatre Quarterly, recording biographical, performance, and bibliographical information in accessible form about a wide range of mainly living playwrights. The format was subsequently extended by Simon Trussler for the ‘Writers on File’ series he now edits for Methuen London, of which the first six titles have recently appeared. However, it was felt that the former style of checklist would still provide a valuable source of information for writers not scheduled for early inclusion in the new series, expecially when this complemented other forms of documentation in the journal: and this first ‘NTQ Checklist’ on the work of John McGrath thus appears alongside Tony Mitchell's interview with the playwright. Its compiler, Malcolm Page, teaches in the English Department of Simon Fraser University, British Columbia. Besides contributing several of the earlier series of ‘Theatre Checklists’. Malcolm Page has published widely in the field of modern British drama: his study of John Arden appeared last year from Twayne, and his volume on Arden was among the first of the ‘Writers on File’ from Methuen.

Magnetic-field strengths from optical polarization data

1967 ◽  
Vol 31 ◽  
pp. 381-383
Author(s):  
J. M. Greenberg
Keyword(s):  
Magnetic Field ◽  
Optical Polarization ◽  
Polarization Data ◽  
Term Model ◽  
Source Of Information ◽  
Field Strengths

Van de Hulst (Paper 64, Table 1) has marked optical polarization as a questionable or marginal source of information concerning magnetic field strengths. Rather than arguing about this–I should rate this method asq+-, or quarrelling about the term ‘model-sensitive results’, I wish to stress the historical point that as recently as two years ago there were still some who questioned that optical polarization was definitely due to magnetically-oriented interstellar particles.

Small Angle Electron Scattering From Vacuum Condensed Metallic Films

1968 ◽  
Vol 26 ◽  
pp. 380-381
Author(s):  
J. Silcox ◽  
R. H. Wade
Keyword(s):  
Electron Scattering ◽  
Small Angle ◽  
Ring Structure ◽  
Two Dimensional ◽  
Metallic Films ◽  
Micro Structure ◽  
Angle Scattering ◽  
The Fourier Transform ◽  
Source Of Information ◽  
Kinematical Theory

Recent work has drawn attention to the possibilities that small angle electron scattering offers as a source of information about the micro-structure of vacuum condensed films. In particular, this serves as a good detector of discontinuities within the films. A review of a kinematical theory describing the small angle scattering from a thin film composed of discrete particles packed close together will be presented. Such a model could be represented by a set of cylinders packed side by side in a two dimensional fluid-like array, the axis of the cylinders being normal to the film and the length of the cylinders becoming the thickness of the film. The Fourier transform of such an array can be regarded as a ring structure around the central beam in the plane of the film with the usual thickness transform in a direction normal to the film. The intensity profile across the ring structure is related to the radial distribution function of the spacing between cylinders.

Effects of Momentary Affect on Satisfaction Judgments

2020 ◽  
Vol 41 (2) ◽  
pp. 61-67
Author(s):  
Marko Tončić ◽  
Petra Anić
Keyword(s):  
Linear Models ◽  
Time Frame ◽  
Hierarchical Linear Models ◽  
Curvilinear Relationship ◽  
Positive And Negative Affect ◽  
Transient Events ◽  
Time Frames ◽  
Events Data ◽  
Level Satisfaction ◽  
Source Of Information

Abstract. This study aims to examine the effect of affect on satisfaction, both at the between- and the within-person level for momentary assessments. Affect is regarded as an important source of information for life satisfaction judgments. This affective effect on satisfaction is well established at the dispositional level, while at the within-person level it is heavily under-researched. This is true especially for momentary assessments. In this experience sampling study both mood and satisfaction scales were administered five times a day for 7 days via hand-held devices ( N = 74 with 2,122 assessments). Several hierarchical linear models were fitted to the data. Even though the amount of between-person variance was relatively low, both positive and negative affect had substantial effects on momentary satisfaction on the between- and the within-person level as well. The within-person effects of affect on satisfaction appear to be more pronounced than the between-person ones. At the momentary level, the amount of between-person variance is lower than in studies with longer time-frames. The affect-related effects on satisfaction possibly have a curvilinear relationship with the time-frame used, increasing in intensity up to a point and then decreasing again. Such a relationship suggests that, at the momentary level, satisfaction might behave in a more stochastic manner, allowing for transient events/data which are not necessarily affect-related to affect it.

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