Implementation of mid-scale fire regime condition class mapping

2008 ◽  
Vol 17 (3) ◽  
pp. 390 ◽  
Author(s):  
Louis Provencher ◽  
Jeff Campbell ◽  
Jan Nachlinger
Keyword(s):  
Fire Regime ◽  
Reference Conditions ◽  
Soil Survey ◽  
Additional Information ◽  
Big Sagebrush ◽  
Natural Range ◽  
The Common ◽  
Data Layers ◽  
Fire Regime Condition Class ◽  
Natural Range Of Variability

We used mid-scale Fire Regime Condition Class (FRCC) mapping to provide Hawthorne Army Depot in the Mount Grant area of Nevada, USA, with data layers to plan fuels restoration projects to meet resource management goals. FRCC mapping computes an index of the departure of existing conditions from the natural range of variability, and consists of five primary steps: (1) mapping the Potential Natural Vegetation Types (PNVT) based on interpretation of a soil survey; (2) refining PNVTs based on additional information; (3) modelling the natural range of variability (NRV) per PNVT; (4) using field verification, calculation and mapping of departure of current distribution of structural vegetation classes interpreted by remote sensing (IKONOS 4-m resolution satellite imagery) from the NRV; and (5) mapping structural vegetation classes that differ from reference conditions. Pinyon–juniper and mountain mahogany woodlands were found within the NRV, whereas departure increased from moderate for low and big sagebrush PNVTs and mixed desert shrub to high for riparian mountain meadow. Several PNVTs showed departures that were close to FRCC class limits. The common recommendation to reach the NRV was to decrease the percentage of late-development closed and cheatgrass-dominant classes, thus increasing the percentage of early and mid-development classes.

scholarly journals Comparing selected fire regime condition class (FRCC) and LANDFIRE vegetation model results with tree-ring data

2010 ◽  
Vol 19 (1) ◽  
pp. 1 ◽  
Author(s):  
Tyson L. Swetnam ◽  
Peter M. Brown
Keyword(s):  
Tree Ring ◽  
Ponderosa Pine ◽  
Fire Regime ◽  
Reference Conditions ◽  
Low Frequency ◽  
Fire Regimes ◽  
Vegetation Types ◽  
Tree Ring Data ◽  
Map Data ◽  
Fire Regime Condition Class

Fire Regime Condition Class (FRCC) has been developed as a nationally consistent interagency method in the US to assess degree of departure between historical and current fire regimes and vegetation structural conditions across differing vegetation types. Historical and existing vegetation map data also are being developed for the nationwide LANDFIRE project to aid in FRCC assessments. Here, we compare selected FRCC and LANDFIRE vegetation characteristics derived from simulation modeling with similar characteristics reconstructed from tree-ring data collected from 11 forested sites in Utah. Reconstructed reference conditions based on trees present in 1880 compared with reference conditions modeled by the Vegetation Dynamics Development Tool for individual Biophysical Settings (BpS) used in FRCC and LANDFIRE assessments showed significance relationships for ponderosa pine, aspen, and mixed-conifer BpS but not for spruce–fir, piñon–juniper, or lodgepole pine BpS. LANDFIRE map data were found to be ~58% accurate for BpS and ~60% accurate for existing vegetation types. Results suggest that limited sampling of age-to-size relationships by different species may be needed to help refine reference condition definitions used in FRCC assessments, and that more empirical data are needed to better parameterize FRCC vegetation models in especially low-frequency fire types.

Eighty years of change: vegetation in the montane ecoregion of Jasper National Park, Alberta, Canada

2002 ◽  
Vol 32 (11) ◽  
pp. 2010-2021 ◽  
Author(s):  
Jeanine M Rhemtulla ◽  
Ronald J Hall ◽  
Eric S Higgs ◽  
S Ellen Macdonald
Keyword(s):  
National Park ◽  
Vegetation Change ◽  
Fire Regime ◽  
Reference Conditions ◽  
Habitat Diversity ◽  
Climatic Conditions ◽  
Aerial Photographs ◽  
Contributing Factors ◽  
Jasper National Park ◽  
Closed Canopy

Repeat ground photographs (taken in 1915 and 1997) from a series of topographical survey stations and repeat aerial photographs (flown in 1949 and 1991) were analysed to assess changes in vegetation composition and distribution in the montane ecoregion of Jasper National Park, in the Rocky Mountains of Alberta, Canada. A quantitative approach for assessing relative vegetation change in repeat ground photographs was developed and tested. The results indicated a shift towards late-successional vegetation types and an increase in crown closure in coniferous stands. Grasslands, shrub, juvenile forest, and open forests decreased in extent, and closed-canopy forests became more prevalent. The majority of forest stands succeeded to dominance by coniferous species. Changes in vegetation patterns were likely largely attributable to shifts in the fire regime over the last century, although climatic conditions and human activity may also have been contributing factors. Implications of observed changes include decreased habitat diversity, increased possibility of insect outbreaks, and potential for future high-intensity fire events. Results of the study increase knowledge of historical reference conditions and may help to establish restoration goals for the montane ecoregion of the park.

scholarly journals Geostatistical prediction of clay percentage based on soil survey data

2002 ◽  
Vol 11 (4) ◽  
pp. 381-390
Author(s):  
A. TALKKARI ◽  
L. JAUHIAINEN ◽  
M. YLI-HALLA
Keyword(s):  
Soil Properties ◽  
Spatial Variation ◽  
Survey Data ◽  
Clay Content ◽  
Spherical Model ◽  
Simulation Method ◽  
Soil Survey ◽  
Management Zones ◽  
Additional Information ◽  
Clay Percentage

In precision farming fields may be divided into management zones according to the spatial variation in soil properties. Clay content is an important soil characteristic, because it is associated with other soil properties that are important in management. Soil survey data from 150 sampling sites taken from an area of 218 ha were used to predict the spatial variation of clay percentage geostatistically in an agricultural soil in Jokioinen, Finland. The exponential and spherical models with a nugget component were fitted to the experimental variogram. This indicated that the medium-range pattern could be modelled, but the short-range variation could not, due to sparsity of sample points at short distances. The effect of sampling density on the kriging error was evaluated using the random simulation method. Kriging with a spherical model produced a map with smooth variation in clay percentage. The standard error of kriging estimates decreased only slightly when the density of samples was increased. The predictions were divided into three classes based on the clay percentage. Areas with clay content below 30%, between 30% and 60% and over 60% belong to non-clay, clay and heavy clay zones, respectively. With additional information from the soil samples on the contents of nutrients and organic matter these areas can serve as agricultural management zones.;

scholarly journals Design of an experimental four-camera setup for enhanced 3D surface reconstruction in microsurgery

2017 ◽  
Vol 3 (2) ◽  
pp. 539-542 ◽  
Author(s):  
Christian Marzi ◽  
Andreas Wachter ◽  
Werner Nahm
Keyword(s):  
3D Reconstruction ◽  
Reconstruction Algorithms ◽  
Camera System ◽  
Additional Information ◽  
Wide Range ◽  
Main Disadvantage ◽  
The Common ◽  
Visualization Systems ◽  
Compact Design ◽  
The Impact

AbstractFuture fully digital surgical visualization systems enable a wide range of new options. Caused by optomechanical limitations a main disadvantage of today’s surgical microscopes is their incapability of providing arbitrary perspectives to more than two observers. In a fully digital microscopic system, multiple arbitrary views can be generated from a 3D reconstruction. Modern surgical microscopes allow replacing the eyepieces by cameras in order to record stereoscopic videos. A reconstruction from these videos can only contain the amount of detail the recording camera system gathers from the scene. Therefore, covered surfaces can result in a faulty reconstruction for deviating stereoscopic perspectives. By adding cameras recording the object from different angles, additional information of the scene is acquired, allowing to improve the reconstruction. Our approach is to use a fixed four-camera setup as a front-end system to capture enhanced 3D topography of a pseudo-surgical scene. This experimental setup would provide images for the reconstruction algorithms and generation of multiple observing stereo perspectives. The concept of the designed setup is based on the common main objective (CMO) principle of current surgical microscopes. These systems are well established and optically mature. Furthermore, the CMO principle allows a more compact design and a lowered effort in calibration than cameras with separate optics. Behind the CMO four pupils separate the four channels which are recorded by one camera each. The designed system captures an area of approximately 28mm × 28mm with four cameras. Thus, allowing to process images of 6 different stereo perspectives. In order to verify the setup, it is modelled in silico. It can be used in further studies to test algorithms for 3D reconstruction from up to four perspectives and provide information about the impact of additionally recorded perspectives on the enhancement of a reconstruction.

Oxford Textbook of Old Age Psychiatry

2013 ◽  
Keyword(s):  
Decision Making ◽  
Palliative Care ◽  
Old Age ◽  
Mental Capacity ◽  
Global Approach ◽  
Additional Information ◽  
Memory Clinics ◽  
Old Age Psychiatry ◽  
The Common ◽  
Ethics Of Caring

Taking a global approach by highlighting both the common burdens and the differences in management from country to country, The Oxford Textbook of Old Age Psychiatry, Second Edition includes information on all the latest improvements and changes in the field. New chapters are included to reflect the development of old age care; covering palliative care, the ethics of caring, and living and dying with dementia. Existing chapters have also been revised and updated throughout and additional information is included on brain stimulation therapies, memory clinics and services, and capacity, which now includes all mental capacity and decision making.

scholarly journals Forest management is driving the eastern North American boreal forest outside its natural range of variability

2009 ◽  
Vol 7 (10) ◽  
pp. 519-524 ◽  
Author(s):  
Dominic Cyr ◽  
Sylvie Gauthier ◽  
Yves Bergeron ◽  
Christopher Carcaillet
Keyword(s):  
Forest Management ◽  
Boreal Forest ◽  
North American ◽  
Natural Range ◽  
Natural Range Of Variability

scholarly journals Have some landscapes in the eastern Canadian boreal forest moved beyond their natural range of variability?

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Pierre Grondin ◽  
Sylvie Gauthier ◽  
Véronique Poirier ◽  
Patrice Tardif ◽  
Yan Boucher ◽  
...  
Keyword(s):  
Boreal Forest ◽  
Natural Range ◽  
Canadian Boreal Forest ◽  
Natural Range Of Variability

Constraints on violating constraints

2014 ◽  
Vol 5 (3) ◽  
pp. 341-354 ◽  
Author(s):  
G. Tucker Childs
Keyword(s):  
Functional Explanation ◽  
Prosodic Features ◽  
Everyday Language ◽  
Additional Information ◽  
Word Category ◽  
Fair Game ◽  
The Common ◽  
Linguistic Constraints

This paper examines the contradictory demands of using language expressively and still qualifying as language, proposing a functional explanation for the form of words in a linguistic word category. Being expressive requires expending more energy, emitting a more robust signal to convey additional information about the speaker, the perception of an event, etc. Doing so requires violating the common linguistic constraints of everyday language, yet to be recognized as language requires that one’s speech obey these same rules. How speakers satisfy these demands tells us about language in both its function and form. The resolution of this dilemma requires the use of suprasegmental rather than segmental features, e.g., a wider range of and more varied use of F0. Because prosodic features are more susceptible to manipulation, they provide the resources for expressivity. Segmental parameters cannot be so easily violated, though manipulating phonotactics remains fair game. Thus we see that there are constraints on violating constraints.

scholarly journals Influence of climate and environment on post-fire recovery of mountain big sagebrush

2014 ◽  
Vol 23 (1) ◽  
pp. 131 ◽  
Author(s):  
Zachary J. Nelson ◽  
Peter J. Weisberg ◽  
Stanley G. Kitchen
Keyword(s):  
Great Basin ◽  
Recovery Rate ◽  
Fire Regime ◽  
Seedling Survival ◽  
High Elevation ◽  
Deep Soil ◽  
Big Sagebrush ◽  
Survival Percentage ◽  
Water Recharge ◽  
Recovery Times

In arid and semi-arid landscapes around the world, wildfire plays a key role in maintaining species diversity. Dominant plant associations may depend upon particular fire regime characteristics for their persistence. Mountain shrub communities in high-elevation landscapes of the Intermountain West, USA, are strongly influenced by the post-fire recovery dynamics of the obligate-seeding shrub, mountain big sagebrush (Artemisia tridentata Nutt. ssp. vaseyana [Rydb.] Beetle). This species is a short-distance disperser with a short-lived seedbank, leading to highly variable post-fire recovery times (15–100 years). We investigated the relative importance of site productivity and seasonal climate in explaining the variance in recovery time for 36 fires, comprising a fire chrono-sequence (from 1971 to 2007) for the Great Basin and Colorado Plateau. A. t. vaseyana recovery was positively related to precipitation in the cool season immediately following fire, likely because deep soil-water recharge that persists throughout the growing season enhances first-year seedling survival. Percentage sand fraction positively correlated with recovery rate yet negatively correlated with live cover in unburnt stands. Our data support the hypothesis that post-fire recovery rate of A. t. vaseyana depends on the climatically controlled ephemerality of the regeneration niche, as is likely true for many arid-land shrub species.

Providing Integrated Care for Pain and Addiction (DRAFT)

2018 ◽  
Author(s):  
Alan A. Wartenberg
Keyword(s):  
Substance Use ◽  
Integrated Care ◽  
Substance Use Disorders ◽  
Multidisciplinary Approach ◽  
Current Standard ◽  
Addiction Medicine ◽  
Additional Information ◽  
Pain Syndromes ◽  
Assessment And Treatment ◽  
The Common

The central premise of this chapter on providing integrated care for both pain and addiction is that all patients presenting with pain are at risk for development of substance use disorders. Assessment and treatment of the complex interplay between pain syndromes and substance use disorders proceed most productively by employing an integrated model, with a multidisciplinary approach and with employment of multiple diagnostic instruments. The author describes an integrated care model as it applies to each of the common substances of use: opioids, tobacco, alcohol, benzodiazepines, cannabinoids, barbiturates, and stimulants. The basis for a decision to refer for evaluation or treatment is described. The chapter concludes with an argument for collaboration between disciplines, notably pain medicine and addiction medicine, as being the current standard of acceptable care for patients whose illnesses dwell in both camps. A separate text box provides additional information and resources bearing on this chapter’s topics.

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