Morphometric Variation of Sandhill Cranes from Mid-Continental North America

1985 ◽  
Vol 49 (1) ◽  
pp. 246 ◽  
Author(s):  
Thomas C. Tacha ◽  
Paul A. Vohs ◽  
William D. Warde
Keyword(s):  
North America ◽  
Morphometric Variation ◽  
Sandhill Cranes

Age of Sexual Maturity of Sandhill Cranes from Mid-Continental North America

1989 ◽  
Vol 53 (1) ◽  
pp. 43 ◽  
Author(s):  
Thomas C. Tacha ◽  
Donald E. Haley ◽  
Paul A. Vohs
Keyword(s):  
North America ◽  
Sexual Maturity ◽  
Sandhill Cranes

Red-headed Love Child

2020 ◽  
pp. 46-53
Author(s):  
J. Drew Lanham
Keyword(s):  
North America ◽  
Platte River ◽  
The Family ◽  
The World ◽  
Sandhill Cranes

This chapter shows how the author journeyed out to Nebraska in the last days of March to witness the tail end of one of the great ornithological wonders in North America: the northward migration of sandhill cranes along the Platte River. For probably 10,000 years or more, the tall, steel-gray birds have thrown their unmusically beautiful calls across the shallow floodplain that is now in the heart of America's corn and burger-producing breadbasket. In the air they were gracefully buoyant and powerful fliers. On the ground they were just as stately — walking, stalking, dancing, and prancing as crane-kind does. When one is surrounded by cranes it is easy to understand how the family of birds have generated awe and worship around the world.

Migration Routes of Sandhill Cranes from Mid-Continental North America

1984 ◽  
Vol 48 (3) ◽  
pp. 1028 ◽  
Author(s):  
Thomas C. Tacha ◽  
Paul A. Vohs ◽  
George C. Iverson
Keyword(s):  
North America ◽  
Migration Routes ◽  
Sandhill Cranes

Using Stable Hydrogen Isotope Analysis of Feathers to Delineate Origins of Harvested Sandhill Cranes in the Central Flyway of North America

Waterbirds ◽  
2006 ◽  
Vol 29 (2) ◽  
pp. 137-147 ◽  
Author(s):  
Keith A. Hobson ◽  
Steven Van Wilgenburg ◽  
Leonard I. Wassenaar ◽  
Helen Hands ◽  
William P. Johnson ◽  
...  
Keyword(s):  
North America ◽  
Hydrogen Isotope ◽  
Isotope Analysis ◽  
Stable Hydrogen Isotope ◽  
Sandhill Cranes ◽  
Central Flyway

Some Helminth Parasites of Sandhill Cranes from Mid-Continental North America

1983 ◽  
Vol 19 (1) ◽  
pp. 56-59 ◽  
Author(s):  
George C. Iverson ◽  
Paul A. Vohs ◽  
A. Alan Kocan ◽  
Kenneth A. Waldrup
Keyword(s):  
North America ◽  
Helminth Parasites ◽  
Sandhill Cranes

Morphometric variation between populations of the balsam woolly aphid, Adelges piceae (Ratzeburg) (Homoptera: Adelgidae), in North America

1980 ◽  
Vol 58 (8) ◽  
pp. 1494-1503 ◽  
Author(s):  
R. G. Foottit ◽  
M. Mackauer
Keyword(s):  
North America ◽  
Adult Stage ◽  
Morphological Characters ◽  
Multiple Discriminant Analysis ◽  
Morphometric Variation ◽  
Intermediate Group ◽  
First Instar ◽  
Woolly Aphid ◽  
Adelges Piceae ◽  
Reliable Classification

Morphological variation in characters of the first-instar and the adult stage of the balsam woolly aphid, Adelges piceae (Ratzeburg) (Homoptera: Adelgidae), were studied. Multiple discriminant analysis and UPGMA cluster analysis of the Mahalanobis generalized distances were used to classify 18 population samples collected on five Abies species throughout the known area of distribution. The populations were separated into three distinct groups: a "Maritime" group, a "British Columbia" group, and an "intermediate" group which consisted of samples from North Carolina, Oregon, and Washington. Variables taken from the adult morph gave a more consistent and, hence, a more reliable classification than the first-instar variables. Allocation of individual specimens into the three groups, as determined by identification functions, showed that the morphological characters measured in the adult stage correctly identified 85% of the specimens.It is suggested that the observed morphological divergence between eastern and western populations of A. piceae reflects the aphid's colonization history in North America. The importance of these findings for control is noted.

Morphometric variation within and between populations of the pine aphid, Cinara nigra (Wilson) (Homoptera: Aphidoidea: Lachnidae), in western North America

1990 ◽  
Vol 68 (7) ◽  
pp. 1410-1419 ◽  
Author(s):  
R. G. Foottit ◽  
M. Mackauer
Keyword(s):  
North America ◽  
Morphological Variation ◽  
Pinus Contorta ◽  
Principal Component ◽  
Significant Loss ◽  
Population Variation ◽  
Species Discrimination ◽  
Western North America ◽  
Shape Variation ◽  
Morphometric Variation

Morphological variation in Cinara nigra (Wilson), found on Pinus contorta Dougl. ex Loud, throughout western North America, was characterized with the aid of univariate and multivariate statistical methods. Within-population variation in one sample collected near Edson, Alberta, was examined. Correlation and principal component analysis revealed patterns of interdependence among characters as well as patterns of size and size-related shape variation in 52 characters. To examine morphological variation between 19 geographic samples, this initial set was reduced in two steps to 49 and 32 characters, respectively; the reduction did not result in a significant loss of information content. No geographic pattern in clusters of samples was revealed either by the ordination of sample centroids or by UPGMA cluster analysis of the Mahalanobis D values. The taxonomic implications of this morphometric analysis are discussed, in particular the usefulness of various morphological attributes for species discrimination.

Time and Energy Budgets of Sandhill Cranes from Mid-Continental North America

1987 ◽  
Vol 51 (2) ◽  
pp. 440 ◽  
Author(s):  
Thomas C. Tacha ◽  
Paul A. Vohs ◽  
George C. Iverson
Keyword(s):  
North America ◽  
Energy Budgets ◽  
Sandhill Cranes ◽  
Time And Energy

A synopsis ofChaenothecain North America, including a new species from southern Ontario,C. selvae, supported by morphometric analyses

Botany ◽  
2018 ◽  
Vol 96 (9) ◽  
pp. 547-553 ◽  
Author(s):  
Richard Troy McMullin ◽  
Jose R. Maloles ◽  
Steven B. Selva ◽  
Steven G. Newmaster
Keyword(s):  
New Species ◽  
North America ◽  
Correspondence Analysis ◽  
Detrended Correspondence Analysis ◽  
Morphological Characters ◽  
Morphometric Variation ◽  
Southern Ontario ◽  
Morphometric Analyses ◽  
A New Species

We describe and illustrate a new species of calicioid lichen from southern Ontario, Chaenotheca selvae. We place it in Chaenotheca because of its lichenized thallus with a Stichococcus photobiont, a brown mazaedium, and ascospores that are brown, spherical, and single-celled (3.0–3.6 μm in diam.). It differs from other species of Chaenotheca by its photobiont, non-ornamented ascospores, straight stalks, and producing orange-brown pruina on the mazaedium, excipulum, and upper portion of the stalk when mature. Using a detrended correspondence analysis we identified 25 taxa, including the sp. nov., analyzing 22 morphological characters. Our results provide evidence of chemical and morphometric variation among species of Chaenotheca. We also provide a key for the identification of the 25 Chaenotheca species in North America.

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