Identifying and Modelling the Spatial Distribution Dynamics of Regenerating Lodgepole Pine

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ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Identifying and Modelling the Spatial Distribution Dynamics of Regenerating Lodgepole Pine by : Gordon Donald Nigh

Download or read book Identifying and Modelling the Spatial Distribution Dynamics of Regenerating Lodgepole Pine written by Gordon Donald Nigh and published by . This book was released on 1997 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigated the changes in the spatial distribution of lodgepole pine stands as regeneration proceeds. Data were collected from 29 plots established in regenerating lodgepole pine stands and remeasured two years later. Nine of these plots had sufficient ingrowth to warrant an analysis of their spatial distribution dynamics. Ripley's K(t) statistic was used to identify the spatial pattern of the trees at the initial measurement, the ingrowth trees, and the combined initial and ingrowth trees. The K(t) statistic was also employed to detect correlation between the locations of the initial and the ingrowth trees. The spatial patterns were modelled by a Poisson cluster process, a Poisson process, or a Markov point process when the trees were aggregated, random, or regularly distributed, respectively.

Identification and Simulation of the Spatial Pattern of Juvenile Lodgepole Pine in the Sub-boreal Spruce Biogeoclimatic Zone, Stuart Dry Warm and Babine Moist Cold Variants

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Publisher : Canadian Forest Service
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Identification and Simulation of the Spatial Pattern of Juvenile Lodgepole Pine in the Sub-boreal Spruce Biogeoclimatic Zone, Stuart Dry Warm and Babine Moist Cold Variants by : Gordon Donald Nigh

Download or read book Identification and Simulation of the Spatial Pattern of Juvenile Lodgepole Pine in the Sub-boreal Spruce Biogeoclimatic Zone, Stuart Dry Warm and Babine Moist Cold Variants written by Gordon Donald Nigh and published by Canadian Forest Service. This book was released on 1996 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes a study that identified and modelled the spatial pattern of trees in lodgepole pine sites in two biogeoclimatic variants in British Columbia. The K(t) statistic was used to detect the patterns and provide a basis for determining an appropriate spatial process model. Most sites had an aggregated pattern which was modelled effectively by a Poisson cluster process. An equation describing the relationship between the parameters of the Poisson cluster process model was developed. Random patterns occurring in the plots were modelled by a Poisson process and regular patterns by a Markov point process and a lattice-based process. The appendix contains the algorithm for the processes used.

The Evolution of Landscape Structure

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Publisher :
ISBN 13 : 9781303118531
Total Pages : 81 pages
Book Rating : 4.1/5 (185 download)

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Book Synopsis The Evolution of Landscape Structure by : Matthew V. Talluto

Download or read book The Evolution of Landscape Structure written by Matthew V. Talluto and published by . This book was released on 2013 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent work in model systems has demonstrated significant effects of rapid evolutionary change on ecological processes (eco-evolutionary dynamics). However, few studies have addressed whether eco-evolutionary dynamics structure natural ecosystems. I investigated landscape scale variation in the frequency of serotiny in Rocky Mountain lodgepole pine ( Pinus contorta subsp. latifolia ), a widespread species in which postfire seedling density and ecosystem structure are largely determined by serotiny. Serotiny, the retention of mature seeds in cones in a canopy seed bank, is a heritable trait that is an adaptation to stand-replacing fire. Less attention has been paid to the potential selective effects of seed predation on serotiny. For lodgepole pine, seed losses due to pre-dispersal seed predation by the American red squirrel (Tamiasciurus hudsonicus ) can be extreme. Furthermore, serotinous cones are more exposed to pre-dispersal predation than non-serotinous cones, suggesting the potential for selection against serotiny. I hypothesized that spatial variation in serotiny in lodgepole pine forests results from variation in conflicting directional selection from fire and seed predation. I present data from the Greater Yellowstone Ecosystem showing that serotiny is uncommon where fire return intervals are long (ca. 280-310 years) but is of variable frequency where fire return intervals are shorter (ca. 135-185 years), and that much of this variance is explained by variation in the intensity of seed predation. I also show that seed predation rates of serotinous cones are higher than those of non-serotinous cones, indicating selection against serotiny from seed predators. Finally, I use simulation modeling to show that the predation rates I report exert strong selection against serotiny and could produce the patterns observed in the field. These results suggest that contemporary patterns in serotiny reflect evolution in response to conflicting selection pressures from fire and seed predation. Consequently, spatial patterns in ecosystem structure and function in lodgepole pine forests likely result from an eco-evolutionary dynamic driven by spatial variation in two opposing selective forces.

Ecology and Regeneration of Lodgepole Pine

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ISBN 13 :
Total Pages : 552 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Ecology and Regeneration of Lodgepole Pine by : James E. Lotan

Download or read book Ecology and Regeneration of Lodgepole Pine written by James E. Lotan and published by . This book was released on 1983 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bibliography of Agriculture

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ISBN 13 :
Total Pages : 1228 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Bibliography of Agriculture by :

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1975 with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

British Columbia Government Publications, Monthly Checklist

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ISBN 13 :
Total Pages : 700 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis British Columbia Government Publications, Monthly Checklist by : British Columbia. Legislative Library

Download or read book British Columbia Government Publications, Monthly Checklist written by British Columbia. Legislative Library and published by . This book was released on 1998 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Modelling the Distribution of Advance Regeneration in Lodgepole Pine Stands in the Central Interior of British Columbia

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

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Book Synopsis Modelling the Distribution of Advance Regeneration in Lodgepole Pine Stands in the Central Interior of British Columbia by : Darin Warren Brooks

Download or read book Modelling the Distribution of Advance Regeneration in Lodgepole Pine Stands in the Central Interior of British Columbia written by Darin Warren Brooks and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The recent mountain-pine beetle outbreak in the Central Interior of British Columbia is leaving unsalvaged stands with minimal silvicultural treatment, raising questions about their ability to regenerate and the implications of this uncertainty to future timber supply and habitat values. No system currently exists to predict, on a landscape level, which pine stands will have adequate stocking of advance regeneration suitable for release upon canopy death. My research takes a ground-truthed, landscape-level approach to modelling, predicting, mapping, and prioritizing stands for salvage or rehabilitation. The resulting model, derived from recursive partitioning of data from 964 sample plots, created a landscape level output with a predictive accuracy of 78%. Across the Sub-Boreal Spruce study area, I estimate that 58% of mature pine-leading stands (approximately 840,000 ha) are likely or very likely to be stocked with at least 600 stems/ha of living understory trees."--Leaf ii.

The Stand Dynamics of Lodgepole Pine

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Publisher : Forest Economics and Policy Analysis Research Unit, University of British Columbia
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis The Stand Dynamics of Lodgepole Pine by : D. E. Tait

Download or read book The Stand Dynamics of Lodgepole Pine written by D. E. Tait and published by Forest Economics and Policy Analysis Research Unit, University of British Columbia. This book was released on 1988 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Identification and Simulation of the Spatial Pattern of Juvenile Lodgepole Pine in the Sub-boreal Spruce Biogeoclimatic Zone, Stuart Dry Warm and Bambin Moist Cold Variants

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Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (246 download)

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Book Synopsis Identification and Simulation of the Spatial Pattern of Juvenile Lodgepole Pine in the Sub-boreal Spruce Biogeoclimatic Zone, Stuart Dry Warm and Bambin Moist Cold Variants by : Gordon D. Nigh

Download or read book Identification and Simulation of the Spatial Pattern of Juvenile Lodgepole Pine in the Sub-boreal Spruce Biogeoclimatic Zone, Stuart Dry Warm and Bambin Moist Cold Variants written by Gordon D. Nigh and published by . This book was released on 1996 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Canadian Journal of Forest Research

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ISBN 13 :
Total Pages : 670 pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Canadian Journal of Forest Research by :

Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2015-10 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Masters Theses in the Pure and Applied Sciences

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Publisher : Springer Science & Business Media
ISBN 13 : 1461524539
Total Pages : 391 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the though that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemi nation. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 37 (thesis year 1992) a total of 12,549 thesis titles from 25 Canadian and 153 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 37 reports theses submitted in 1992, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.

Ecology Abstracts

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ISBN 13 :
Total Pages : 738 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Ecology Abstracts by :

Download or read book Ecology Abstracts written by and published by . This book was released on 1998 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.

Agrindex

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ISBN 13 :
Total Pages : 822 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Agrindex by :

Download or read book Agrindex written by and published by . This book was released on 1995 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Biological & Agricultural Index

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ISBN 13 :
Total Pages : 2984 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Biological & Agricultural Index by :

Download or read book Biological & Agricultural Index written by and published by . This book was released on 1997 with total page 2984 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Mountain Pine Beetle

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ISBN 13 : 9780662426233
Total Pages : 304 pages
Book Rating : 4.4/5 (262 download)

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Book Synopsis The Mountain Pine Beetle by : Pacific Forestry Centre

Download or read book The Mountain Pine Beetle written by Pacific Forestry Centre and published by . This book was released on 2006 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book presents a synthesis of published information on mountain pine beetle (Dendroctonus ponderosae Hopkins [Coleoptera: Scolytidae]) biology and management with an emphasis on lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) forests of western Canada. Intended as a reference for researchers as well as forest managers, the book covers three main subject areas: mountain pine beetle biology, management, and socioeconomic concerns. The chapters on biology cover taxonomy, life history and habits, distribution, insect-host tree interactions, development and survival, epidemiology, and outbreak history. The management section covers management strategy, survey and detection, proactive and preventive management, and decision support tools. The chapters on socioeconomic aspects include an economic examination of management programs and the utilization of post-beetle salvage timber in solid wood, panelboard, pulp and paper products."--Publisher's description.

General Technical Report INT.

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ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis General Technical Report INT. by :

Download or read book General Technical Report INT. written by and published by . This book was released on 1981 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bibliography of Agriculture

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ISBN 13 :
Total Pages : 1742 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Bibliography of Agriculture by :

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1992 with total page 1742 pages. Available in PDF, EPUB and Kindle. Book excerpt: