scholarly journals Genetic and morphological differences of water chestnut (Myrtales: Lythraceae: Trapa) populations in the Northeastern United States, Japan, and South Africa

2019 ◽  
Author(s):  
Lynde Dodd ◽  
Nancy Rybicki ◽  
Ryan Thum ◽  
Yasuro Kadono ◽  
Kadiera Ingram
Keyword(s):  
United States ◽  
South Africa ◽  
Northeastern United States ◽  
Water Chestnut ◽  
Morphological Differences

Cryptic introduction of water chestnut (Trapa) in the northeastern United States

2019 ◽  
Vol 155 ◽  
pp. 32-37 ◽  
Author(s):  
Gregory M. Chorak ◽  
Lynde L. Dodd ◽  
Nancy Rybicki ◽  
Kadiera Ingram ◽  
Murat Buyukyoruk ◽  
...  
Keyword(s):  
United States ◽  
Northeastern United States ◽  
Water Chestnut

Variation in the mitochondrial DNA of the Sylvilagus complex occupying the northeastern United States

1997 ◽  
Vol 75 (4) ◽  
pp. 595-605 ◽  
Author(s):  
Marianne K. Litvaitis ◽  
Woo-Jai Lee ◽  
John A. Litvaitis ◽  
Thomas D. Kocher
Keyword(s):  
United States ◽  
Mitochondrial Dna ◽  
New England ◽  
Sister Species ◽  
Sequence Information ◽  
Sylvilagus Floridanus ◽  
Northeastern United States ◽  
New England Cottontail ◽  
Declining Populations ◽  
Morphological Differences

We compared the variation in mitochondrial DNA among species of cottontail rabbits in the northeastern United States to (i) assess the effects of historic transplants of eastern cottontails (Sylvilagus floridanus) on subspecific status, (ii) examine the extent of hybridization between invading eastern cottontails and declining populations of endemic New England cottontails (S. transitionalis), and (iii) evaluate the recent reclassification of S. transitionalis into two sister-species, New England cottontail and Appalachian cottontail (S. obscurus). Sequence variation in the tRNAPro and the first 310 base pairs of the control region supported a separation of the two species S. floridanus and S. transitionalis/S. obscurus. However, geographic structuring of haplotypes was not detected for either group. Genetic similarity among populations of S. floridanus indicated that subspecific designations are not warranted for this species in the northeastern United States. Comparisons of sequence information from populations of S. transitionalis/S. obscurus that were never sympatric (Maine), recently sympatric (New Hampshire), or sympatric with eastern cottontails since the last glaciation of eastern North America (Virginia, West Virginia, Maryland, North Carolina) indicated that hybridization is not occurring between eastern cottontails and New England or Appalachian cottontails. Limited variation in mitochondrial DNA does not support the recent reclassification of S. transitionalis into sister-species. However, karyotypic and morphological differences between northern and southern populations should be considered during any efforts to restore declining populations of this species.

The Solidago rigida complex (Compositae: Astereae): a multivariate morphometric analysis and chromosome numbers

1988 ◽  
Vol 66 (9) ◽  
pp. 1800-1807 ◽  
Author(s):  
Stephen B. Heard ◽  
John C. Semple
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Corolla Lobe ◽  
Morphometric Study ◽  
Herbarium Specimens ◽  
New Combinations ◽  
Northeastern United States ◽  
Chromosome Counts ◽  
Disc Corolla ◽  
Morphological Differences

A multivariate morphometric study of herbarium specimens of Solidago rigida confirmed that the species was divisible into three groups: a prairie race, a southeastern United States race, and a mid western – northeastern United States race. These groups are given subspecific rank as ssp. humilis, ssp. glabrata, and ssp. rigida, respectively, on the basis of morphological differences and their largely allopatric distributions. They are most easily distinguished on the basis of pubescence, phyllary, and disc corolla lobe traits. Twenty-seven new chromosome counts in two of the three subspecies are reported. Subspecies humilis is diploid (2n = 18); ssp. rigida is diploid in Oklahoma and tetraploid (2n = 36) over most of its range. Subspecies glabrata has been reported previously as diploid (four counts). The following new combinations are made: Solidago rigida ssp. glabrata and S. rigida ssp. humilis.

Evaluation of light limitation and depth on germinated seeds of two species of water chestnut cultured under experimental conditions

2021 ◽  
Author(s):  
Lynde Dodd ◽  
Aaron Schad
Keyword(s):  
United States ◽  
Technical Note ◽  
Mesocosm Experiment ◽  
Growth Chamber ◽  
Light Limitation ◽  
Northeastern United States ◽  
Experimental Conditions ◽  
Water Chestnut ◽  
Germinated Seeds

This technical note describes the results of a mesocosm experiment to determine the light and depth limitations of growth chamber germinated seeds of two species of water chestnut (Trapa spp.) naturalized in the northeastern United States.

Alexander Hamilton and the Early Republic in Edwardian Imperial Thought

2019 ◽  
Vol 12 (1) ◽  
pp. 28-50 ◽  
Author(s):  
Patrick M. Kirkwood
Keyword(s):  
United States ◽  
South Africa ◽  
Early Republic ◽  
The United States ◽  
Alexander Hamilton ◽  
George Washington ◽  
American Federation ◽  
Treaty Of Versailles ◽  
The Federalist ◽  
The Federalist Papers

In the first decade of the twentieth century, a rising generation of British colonial administrators profoundly altered British usage of American history in imperial debates. In the process, they influenced both South African history and wider British imperial thought. Prior usage of the Revolution and Early Republic in such debates focused on the United States as a cautionary tale, warning against future ‘lost colonies’. Aided by the publication of F. S. Oliver's Alexander Hamilton (1906), administrators in South Africa used the figures of Hamilton and George Washington, the Federalist Papers, and the drafting of the Constitution as an Anglo-exceptionalist model of (modern) self-government. In doing so they applied the lessons of the Early Republic to South Africa, thereby contributing to the formation of the Union of 1910. They then brought their reconception of the United States, and their belief in the need for ‘imperial federation’, back to the metropole. There they fostered growing diplomatic ties with the US while recasting British political history in-light-of the example of American federation. This process of inter-imperial exchange culminated shortly after the signing of the Treaty of Versailles when the Boer Generals Botha and Smuts were publicly presented as Washington and Hamilton reborn.

Monitoring air quality in class I wilderness areas of the northeastern United States using lichens and bryophytes

2016 ◽  
Author(s):  
Alison C. Dibble ◽  
James W. Hinds ◽  
Ralph Perron ◽  
Natalie Cleavitt ◽  
Richard L. Poirot ◽  
...  
Keyword(s):  
United States ◽  
Air Quality ◽  
Class I ◽  
Northeastern United States ◽  
Wilderness Areas
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