Fire and Succession in the Conifer Forests of Northern North America

1981 ◽  
pp. 374-405 ◽  
Author(s):  
Miron L. Heinselman
Keyword(s):  
North America ◽  
Conifer Forests

Gibbera vaccinii. [Descriptions of Fungi and Bacteria].

2016 ◽  
Author(s):  
P. F. Cannon
Keyword(s):  
Czech Republic ◽  
North America ◽  
Geographical Distribution ◽  
Conservation Status ◽  
Conifer Forests

Abstract A description is provided for Gibbera vaccinii, apparently causing a disease on leaves and stems of Vaccinium species, with records from natural, semi-natural and planted conifer forests, moorland, bogs and, probably, other places where the associated plants occur. Some information on its dispersal and transmission and conservation status is given, along with details of its geographical distribution (North America (USA (Alaska, Washington)), Europe (Austria, Belgium, Bulgaria, Czech Republic, Denmark, Estonia, Finland, France, Germany, Italy, Luxembourg, Norway, Poland, Russia (Smolensk oblast), Slovakia, Sweden, Switzerland, UK)) and hosts (Vaccinium spp.).

scholarly journals Average Stand Age from Forest Inventory Plots Does Not Describe Historical Fire Regimes in Ponderosa Pine and Mixed-Conifer Forests of Western North America

PLoS ONE ◽  
2016 ◽  
Vol 11 (5) ◽  
pp. e0147688 ◽  
Author(s):  
Jens T. Stevens ◽  
Hugh D. Safford ◽  
Malcolm P. North ◽  
Jeremy S. Fried ◽  
Andrew N. Gray ◽  
...  
Keyword(s):  
North America ◽  
Ponderosa Pine ◽  
Forest Inventory ◽  
Fire Regimes ◽  
Stand Age ◽  
Western North America ◽  
Conifer Forests ◽  
Mixed Conifer ◽  
Mixed Conifer Forests

Assessing crown fire potential in coniferous forests of western North America: a critique of current approaches and recent simulation studies

2010 ◽  
Vol 19 (4) ◽  
pp. 377 ◽  
Author(s):  
Miguel G. Cruz ◽  
Martin E. Alexander
Keyword(s):  
North America ◽  
Fire Hazard ◽  
Fire Spread ◽  
Simulation Studies ◽  
Western North America ◽  
Conifer Forests ◽  
Crown Fire ◽  
Rate Of Spread ◽  
Fire Modelling ◽  
Fire Initiation

To control and use wildland fires safely and effectively depends on creditable assessments of fire potential, including the propensity for crowning in conifer forests. Simulation studies that use certain fire modelling systems (i.e. NEXUS, FlamMap, FARSITE, FFE-FVS (Fire and Fuels Extension to the Forest Vegetation Simulator), Fuel Management Analyst (FMAPlus®), BehavePlus) based on separate implementations or direct integration of Rothermel’s surface and crown rate of fire spread models with Van Wagner’s crown fire transition and propagation models are shown to have a significant underprediction bias when used in assessing potential crown fire behaviour in conifer forests of western North America. The principal sources of this underprediction bias are shown to include: (i) incompatible model linkages; (ii) use of surface and crown fire rate of spread models that have an inherent underprediction bias; and (iii) reduction in crown fire rate of spread based on the use of unsubstantiated crown fraction burned functions. The use of uncalibrated custom fuel models to represent surface fuelbeds is a fourth potential source of bias. These sources are described and documented in detail based on comparisons with experimental fire and wildfire observations and on separate analyses of model components. The manner in which the two primary canopy fuel inputs influencing crown fire initiation (i.e. foliar moisture content and canopy base height) is handled in these simulation studies and the meaning of Scott and Reinhardt’s two crown fire hazard indices are also critically examined.

BIOGEOGRAPHY OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE) IN NORTH AMERICA

1982 ◽  
Vol 114 (1) ◽  
pp. 1-53 ◽  
Author(s):  
J. Donald Lafontaine
Keyword(s):  
North America ◽  
Great Basin ◽  
Great Plains ◽  
Rocky Mountain ◽  
Suitable Habitat ◽  
Conifer Forests ◽  
Forest Species ◽  
Mountain Ranges ◽  
Rocky Mountain Region ◽  
Juniper Woodland

AbstractThe biogeography of 171 North American species of Euxoa (Lepidoptera: Noctuidae) is reviewed. For biogeographical analysis, species are arranged in groups according to habitat; these are 62 aridland species, 69 forest species, 19 widespread species, and 21 species with special or unknown habitat requirements. Aridland species are distributed primarily in grassland areas in the Great Plains and in sagebrush areas or piñon–juniper woodland in the intermontane region. Ranges in these two regions are connected in arid corridors through the Rocky Mountain region. Forest species in western North America are arranged in two groups: those that occur in both conifer forests and piñon–juniper woodland (17 species), and those that occur only in conifer forests (40 species). Species in the former category occur throughout the mountain ranges of the west including those of the Great Basin wherever suitable habitat occurs. Those of the latter category occur in conifer forests on mountain ranges around the Great Basin but do not occur in the Great Basin, even in mountain ranges that support suitable habitat. Most forest species that occur in the Rocky Mountain region also occur in disjunct woodland areas in the Great Plains.The effect of Wisconsinan glaciation on the biogeographic regions of western North America is reconstructed from a review of fossil pollen and plant macrofossil studies. From this synthesis it is suggested that during the Wisconsinan glacial maximum, forest species were widely distributed in the Great Plains south of the Laurentian ice sheet, and at low elevations in the Sierra Nevada and Rocky Mountain regions. Piñon–juniper woodland species were widespread in the Great Plains. Forest species that do not occur in piñon–juniper woodland were distributed around the Great Basin but were prevented from reaching suitable habitat in mountain ranges within the Basin by unsuitable habitat in the intervening lowlands. The ranges of aridland species were greatly reduced during Wisconsinan time, particularly in the Great Plains. Aridland corridors through the Rocky Mountains were eliminated during the Wisconsinan glacial maximum.The possibility of speciation during Wisconsinan time is reviewed. Although the distribution of many sister-species are what would be expected from speciation during the Wisconsinan, the distributions may reflect allopatric distributions during Wisconsinan time and not speciation.

scholarly journals Examining Historical and Current Mixed-Severity Fire Regimes in Ponderosa Pine and Mixed-Conifer Forests of Western North America

PLoS ONE ◽  
2014 ◽  
Vol 9 (2) ◽  
pp. e87852 ◽  
Author(s):  
Dennis C. Odion ◽  
Chad T. Hanson ◽  
André Arsenault ◽  
William L. Baker ◽  
Dominick A. DellaSala ◽  
...  
Keyword(s):  
North America ◽  
Ponderosa Pine ◽  
Fire Regimes ◽  
Western North America ◽  
Conifer Forests ◽  
Mixed Conifer ◽  
Mixed Conifer Forests
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