Last edited by Kadal
Saturday, May 9, 2020 | History

2 edition of Geographic variation in pinus contorta found in the catalog.

Geographic variation in pinus contorta

William B. Critchfield

Geographic variation in pinus contorta

by William B. Critchfield

  • 340 Want to read
  • 39 Currently reading

Published by Harvard University in Cambridge, mass .
Written in English


Edition Notes

Statementby William B. Critchfield.
SeriesMaria Moors Cabot Foundation Publication -- no.3
The Physical Object
Paginationvii,118p. :
Number of Pages118
ID Numbers
Open LibraryOL19460481M

KEYWORDS: climate change, endangered species, Idaho, Loxia sinesciuris, Pinus contorta Read Abstract + The recently discovered Cassia Crossbill (Loxia sinesciuris) occurs only in 2 small, isolated mountain ranges in southern Idaho, USA: the South Hills and the Albion Mountains. Geographic pattern of adaptive variation of lodgepole pine (Pinus contorta Dougl.) within the species' coastal range: field performance at age 20 years. Geographic variation of lodgepole pine and its implications for tree improvement in British Columbia. Lodgepole Pine Symposium Proceedings. Back to Research Branch Staff Publications.

Research Highlights: The biology of mountain pine beetle (MPB), Dendroctonus ponderosae Hopkins, in Colorado’s lodgepole pine forests exhibits similarities and differences to other parts of its range. Brood emergence was not influenced by stand density nor related to tree diameter. The probability of individual tree attack is influenced by stocking and tree by: 1. The mesic grasslands of Glacier Park, especially on the west side, are being invaded by trees, primarily lodgepole pine (Pinus contorta) and aspen (Populus tremuloides). Historically, fires were frequent around Polebridge (Barrett et al. ) and on the east side of the Park (Barrett , ) and were probably the most important factor in.

At midelevation, whitebark pine throughout its range is associated with lodgepole pine (Pinus contorta) [75,87,,,]. Whitebark pine is not commonly perceived as a midelevation species, but stand reconstruction studies show that whitebark pine was an important . Subalpine fir is widely distributed and exhibits geographic variation. Two varieties are recognized based on morphological differences [ 75 ]: Abies lasiocarpa var. arizonica, corkbark fir Abies lasiocarpa var. lasiocarpa, typical variety of subalpine fir Subalpine fir hybridizes with balsam fir (A. balsamea) where their ranges overlap in the.


Share this book
You might also like
Data collection manual

Data collection manual

Life and adventures of James R. Durand

Life and adventures of James R. Durand

Managing public access microcomputers in health sciences libraries

Managing public access microcomputers in health sciences libraries

KERAMAG

KERAMAG

Primary school performance tables, key stege 2 results.

Primary school performance tables, key stege 2 results.

Crucified with Christ

Crucified with Christ

Identification of countermeasures for unsafe driving actions

Identification of countermeasures for unsafe driving actions

The emergence of the modern mind

The emergence of the modern mind

Dragon seed

Dragon seed

Pigs ina poke, collection #2

Pigs ina poke, collection #2

G-women

G-women

The 1975-76 drought

The 1975-76 drought

Dusty answer.

Dusty answer.

Electronic job search revolution

Electronic job search revolution

The golden rules of ice hockey

The golden rules of ice hockey

Comprehensive agricultural areas water supply scheme

Comprehensive agricultural areas water supply scheme

Geographic variation in pinus contorta by William B. Critchfield Download PDF EPUB FB2

Additional Physical Format: Online version: Critchfield, William Burke. Geographic variation in Pinus contorta. Cambridge, Harvard University, Geographic variation in Pinus contorta (Maria Moors Cabot Foundation.

Publication) [Critchfield, William Burke] on *FREE* shipping on qualifying offers. Geographic variation in Pinus contorta (Maria Moors Cabot Foundation. Publication)Author: William Burke Critchfield. The data from analysis of several quantitative characters (particularly cone dimensions, orientation, maturity etc.) lead the author to distinguish several regional forms meriting recognition as subspecies: (1) coastal region Pinus contorta subsp.

contorta, (2) Mendocino white plains subsp. bolanderi, (3) Rocky Mountains subsp. latifolia, and (4) Sierra Nevada subsp. by: Geographical Variation of Lodgepole Pine in Relation to Population History Article (PDF Available) in The American Naturalist (3) March with 79 Reads How we measure 'reads'.

This morphometric study of the geographic variation in Pinus contorta is based on 93 provenances cultivated in northern Jutland, Hjardemål Klitplantage, 57'04“08'48‘E (Arboretum trial no. F).Author: Knud Ib Christensen. Components of adaptive variation in pinus contorta from the inland northwest / Related Titles.

Series: Research paper INT ; By. Rehfeldt, G. Intermountain Research Station (Ogden, Utah) Type. Book Material. Published material. Publication info. Geographic variation in the identity and strength of interactions among species provides some of the best evidence of coevolution. For example, the shape of the cones of lodgepole pine (Pinus contorta) differs among populations, depending on whether its major seed predator, the red squirrel (Tamiasciurus hudsonicus), is present.

Familia: Pinaceae Genus: Pinus Subgenus: P. subg. Pinus Sectio: P. sect. Trifoliae Subsectiones: P. subsect. Contortae Species: P. contorta Subspecies: P. subsp. 33 Pinus contorta – Lodgepole Pine and Shore Pine 37 Pinus monticola – Western White Pine seed transfer rules, genetics, and geographic variation for tree species used in reforestation, wildlife, and riparian planting.

Specific guidelines are given for each species. Pinus contorta subsp. murrayana, San Gorgonio Wilderness, San W. Geographic variation in Pinus contorta. Maria Moors Cabot Foundation (Harvard) Publ. Gymnosperm Chemosystematic studies in the genus Pinus.

General survey of the leaf oil terpene composition of lodgepole pine. Canad. Forest Res. – Abstract. This paper describes a hybridization experiment among provenances of lodgepole pine (Pinus contorta var. latifolia Engelm.). Lodgepole pine is one of four varieties of Pinus contorta Dougl.

ex Loud. from North America (Critchfield, ). It is characterized by wide geographical distribution and broad ecological amplitude (Critchfield, ), which has resulted in large genetic Author: Anders Fries.

This thesis is divided into two parts. Part one deals with variation in a number of important silvicultural and taxonomic characteristics of Pinus contorta. Variation in bark and growth habit was studied in the field and recorded by means of photographs.

The data obtained in this manner are supplemented by information concerning variation in both these characteristics in Lodgepole pine. During the night between June 9the temperature at Rhinelander dropped to — °C. Severe frost damage of new shoot growth of both conifers and hardwoods resulted (Plate 1).

Since that Cited by: Serotiny is an ecological adaptation exhibited by some seed plants, in which seed release occurs in response to an environmental trigger, rather than spontaneously at seed most common and best studied trigger is fire, and the term serotiny is often used to refer to this specific case.

The term has also been used in the more general sense of plants that release their seed over a. David V Alford Bsc, PhD, in Pests of Ornamental Trees, Shrubs and Flowers (Second Edition), Pine shoot moth.

An important forestry pest, especially on Austrian pine (Pinus nigra var. nigra), beach pine (P. contorta) and Scots pine (P. sylvestris), and also damaging to fast-growing species bishop pine (P. muricata) and Monterey pine (P.

radiata) are very susceptible. The principal objective of the study is the determination of geographic variation in white spruce in British Columbia. Since variation within this species in British Columbia is greatly influenced by hybridization with other spruce species, an attempt is made to demarcate zones of hybridization, and evaluate its effect on variation in white spruce.

In a preliminary chapter the literature. Gel electrophoresis was used to study isoenzyme variation in Panolis flammea from 8 forest sites in England and Scotland dominated by either Scots (Pinus sylvestris) or lodgepole pine (P. contorta). Four polymorphic loci (esterase, malate dehydrogenase, isocitrate dehydrogenase and 6-phosphogluconate dehydrogenase) were examined in adults.

Most of the genotype frequencies conformed to Cited by: The Biodiversity Heritage Library works collaboratively to make biodiversity literature openly available to the world as part of a global biodiversity community.

Pinus contorta, with the common names lodgepole pine and shore pine, and also known as twisted pine,[2] and For faster navigation, this Iframe is preloading the Wikiwand page for Pinus contorta Pinus contorta is an evergreen Tree growing to 15 m (49ft) by 8 m (26ft) at a fast rate.

Pinus contorta - Douglas. ex Loudon. Common Name. Distribution data from USGS (). occidentalis shown in red, J. grandis shown in green. See also Adams and Kauffmann (a, b) for some more recent range adjustments. In the Sierra Nevada, it grows on shallow soils, often with Abies magnifica, Pinus albicaulis, Pinus contorta subsp.

murrayana, Pinus jeffreyi, or Tsuga mertensiana (Sowder and Mowat ). Phytologia 97(2) April 1, Papers containing nomenclatural changes are marked with an * *Blackwell, W. H., P. M. Letcher and M. J.

Powell. A review and update of the genus Sapromyces (Straminipila: Oomycota). p. 82 - Adams, R. P. and R. E. Riefner, Jr. Geographic variation in the leaf essential oils of Juniperus grandis (Cupressaceae.Geographic variation studies have reported some regional variation in Pinus virginiana for certain morphological characteristics, such as wood spe- cific gravity, cone persistence (Kellison and Zobel, ), tracheid length (Thor, ), and survival rates (Genys, ; Genys, Wright, and Forbes, ); however, Kel- lison and Zobel (The strength of population divergence and local adaptation for phenotypic traits is typically estimated as Q ST, the proportion of total genetic variation due to among‐population variation (Spitze ; Howe et al.

) or as the Q ST proxy V pop, the proportion of phenotypic variation due to among‐population variation (Alberto et al. ).Cited by: