Relevant bibliographies by topics / Vegetation disturbance

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Vegetation disturbance'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Vegetation disturbance"

1

Patten, Robin. "Analysis of the Relationship between Natural Disturbance and Vegetation Patterns in Cascade Canyon, Grand Teton National Park." UW National Parks Service Research Station Annual Reports 9 (January 1, 1985): 96–97. http://dx.doi.org/10.13001/uwnpsrc.1985.2501.

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The steep-walled valleys of the Tetons are subject to frequent natural disturbances, including avalanches, rockfall, and debris flow. The vegetation patterns of these valleys are a function of these disturbance events, with the distribution of the community types being controlled by both environmental factors and the disturbance regime. This project will analyze the relationship between disturbances and vegetation patterns in order to determine how the type, frequency, and magnitude of disturbance affects vegetation. This information should lead to an understanding of how vegetation patterns are created and how they change through time.
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Zhang, Xianliang, and Xuanrui Huang. "Human disturbance caused stronger influences on global vegetation change than climate change." PeerJ 7 (September 25, 2019): e7763. http://dx.doi.org/10.7717/peerj.7763.

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Global vegetation distribution has been influenced by human disturbance and climate change. The past vegetation changes were studied in numerous studies while few studies had addressed the relative contributions of human disturbance and climate change on vegetation change. To separate the influences of human disturbance and climate change on the vegetation changes, we compared the existing vegetation which indicates the vegetation distribution under human influences with the potential vegetation which reflects the vegetation distribution without human influences. The results showed that climate-induced vegetation changes only occurred in a few grid cells from the period 1982–1996 to the period 1997–2013. Human-induced vegetation changes occurred worldwide, except in the polar and desert regions. About 3% of total vegetation distribution was transformed by human activities from the period 1982–1996 to the period 1997–2013. Human disturbances caused stronger damage to global vegetation change than climate change. Our results indicated that the regions where vegetation experienced both human disturbance and climate change are eco-fragile regions.
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Crausbay, Shelley D., and Patrick H. Martin. "Natural disturbance, vegetation patterns and ecological dynamics in tropical montane forests." Journal of Tropical Ecology 32, no. 5 (July 14, 2016): 384–403. http://dx.doi.org/10.1017/s0266467416000328.

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Abstract:Disturbance is a central process in forest dynamics, yet the role of natural disturbance in tropical montane forests (TMFs) has not been systematically addressed. We posit that disturbance in TMFs has a wider role than commonly acknowledged and its effects are distinctive because: (1) TMFs often have very low rates of productivity due to low resources, and so recovery from disturbance may be slow, (2) montane forests have marked environmental heterogeneity which interacts with disturbance, (3) a large percentage of TMFs are regularly exposed to high energy windstorms and landslides, and (4) TMFs contain a biogeographically rich mixture of tree species with divergent evolutionary histories that interact differently with different disturbance types. We reviewed the literature on natural disturbance in TMFs and found 119 peer-reviewed papers which met our search criteria. Our review shows that disturbance is widespread in TMFs with pronounced effects on structure, function, composition and dynamics. Disturbance is also evident in the ecology of TMF biota with clear examples of plant life-history traits adapted to disturbance, including disturbance-triggered germination, treefall gap strategies and resprouting ability. Important aspects of TMF disturbances are stochastic and site-specific, but there are broad patterns in disturbance type, frequency and severity along latitudinal, altitudinal and environmental gradients. Compared with the lowland tropics, TMF disturbances are more spatially structured, TMFs experience more disturbance types in a given area due to environmental complexity, and TMFs are much more prone to small-scale yet severe landslides as well the large and potentially catastrophic disturbances of cyclones, forest die-back and fire. On the whole, natural disturbance should assume a larger role in models of ecosystem processes and vegetation patterns in TMFs. An improved understanding of what creates variation in disturbance severity and post-disturbance recovery rates, how composition and diversity feedback on disturbance type and likelihood, and how global change will alter these dynamics are important priorities in future TMF ecology research.
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Bueno, Inacio T., Greg J. McDermid, Eduarda M. O. Silveira, Jennifer N. Hird, Breno I. Domingos, and Fausto W. Acerbi Júnior. "Spatial Agreement among Vegetation Disturbance Maps in Tropical Domains Using Landsat Time Series." Remote Sensing 12, no. 18 (September 11, 2020): 2948. http://dx.doi.org/10.3390/rs12182948.

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Detecting disturbances in native vegetation is a crucial component of many environmental management strategies, and remote sensing-based methods are the most efficient way to collect multi-temporal disturbance data over large areas. Given that there is a large range of datasets for monitoring, analyzing, and detecting disturbances, many methods have been well-studied and successfully implemented. However, factors such as the vegetation type, input data, and change detection method can significantly alter the outcomes of a disturbance-detection study. We evaluated the spatial agreement of disturbance maps provided by the Breaks For Additive Season and Trend (BFAST) algorithm, evaluating seven spectral indices in three distinct vegetation domains in Brazil: Atlantic forest, savanna, and semi-arid woodland, by assessing levels of agreement between the outputs. We computed individual map accuracies based on a reference dataset, then ranked their performance, while also observing their relationships with specific vegetation domains. Our results indicated a low rate of spatial agreement among index-based disturbance maps, which itself was minimally influenced by vegetation domain. Wetness indices produced greater detection accuracies in comparison to greenness-related indices free of saturation. The normalized difference moisture index performed best in the Atlantic forest domains, yet performed poorest in semi-arid woodland, reflecting its specific sensitivity to vegetation and its water content. The normalized difference vegetation index led to high disturbance detection accuracies in the savanna and semi-arid woodland domains. This study offered novel insight into vegetation disturbance maps, their relationship to different ecosystem types, and corresponding accuracies. Distinct input data can produce non-spatially correlated disturbance maps and reflect site-specific sensitivity. Future research should explore algorithm limitations presented in this study, as well as the expansion to other techniques and vegetation domains across the globe.
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Berger, Alaina L., Klaus J. Puettmann, and George E. Host. "Harvesting impacts on soil and understory vegetation: the influence of season of harvest and within-site disturbance patterns on clear-cut aspen stands in Minnesota." Canadian Journal of Forest Research 34, no. 10 (October 1, 2004): 2159–68. http://dx.doi.org/10.1139/x04-097.

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We investigated impacts of harvesting on soil disturbance and vegetation in the aspen cover type of northern Minnesota, United States. The soil disturbance (resistance to penetration) and understory vegetation were characterized for 19 sites on five 60-m2 plots placed along a disturbance gradient: landings (high harvesting traffic), skid trails (intermediate harvesting traffic), and areas off skid trails (low to no harvesting traffic). Penetration levels were quite variable, but they still indicated that within-site responses to disturbance patterns created by clear-cut harvesting were not uniform. In general, soil disturbance and understory species composition within landings were similar to those with skid trails. The soil disturbance and vegetation composition of these two levels differed from those of the low-disturbance plots (off skid trails), indicating that removing trees alone did not affect vegetation composition as much as creating an established skid trail, regardless of harvest timing. However, sites with more variable species composition (winter-harvested sites) and lower disturbance levels were less altered than sites with likely lower initial diversity (summer-harvested sites). The results suggest that it is important for recovery of understory plant communities to not only limit the amount and level of disturbances but also consider the spatial layout of harvesting, thus maintaining a spatially connected network of remnant forest patches large enough to contain interior forest species.
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Sahib, Nargis, Laïla Rhazi, and Patrick Grillas. "Post-disturbance dynamics of plant communities in a Mediterranean temporary pool (Western Morocco): Effects of disturbance size." Botany 89, no. 2 (February 2011): 105–18. http://dx.doi.org/10.1139/b10-091.

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Mediterranean temporary pools are frequently visited habitats where domestic livestock and wild herbivores generate numerous physical soil disturbances. Using two sizes of experimental plots (large, 1.20 m × 1.20 m; small, 0.3 m × 0.3 m), the effects of soil disturbances on vegetation dynamics and the vertical distribution of seeds were studied in one Moroccan temporary pool. Results show a very rapid regeneration of temporary wetland vegetation in disturbed plots. The speed of regeneration depends on the size of disturbance and hydrology. There was an almost complete return of vegetation to the reference state in the small disturbed plots by the end of the 1st year. This fast restoration was mainly due to seed banks, which play a key role in the resilience of pools to the different sizes of disturbances frequently generated by herbivores, but also to lateral colonization by perennials.
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Burton, Chantelle, Richard Betts, Manoel Cardoso, Ted R. Feldpausch, Anna Harper, Chris D. Jones, Douglas I. Kelley, Eddy Robertson, and Andy Wiltshire. "Representation of fire, land-use change and vegetation dynamics in the Joint UK Land Environment Simulator vn4.9 (JULES)." Geoscientific Model Development 12, no. 1 (January 9, 2019): 179–93. http://dx.doi.org/10.5194/gmd-12-179-2019.

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Abstract. Disturbance of vegetation is a critical component of land cover, but is generally poorly constrained in land surface and carbon cycle models. In particular, land-use change and fire can be treated as large-scale disturbances without full representation of their underlying complexities and interactions. Here we describe developments to the land surface model JULES (Joint UK Land Environment Simulator) to represent land-use change and fire as distinct processes which interact with simulated vegetation dynamics. We couple the fire model INFERNO (INteractive Fire and Emission algoRithm for Natural envirOnments) to dynamic vegetation within JULES and use the HYDE (History Database of the Global Environment) land cover dataset to analyse the impact of land-use change on the simulation of present day vegetation. We evaluate the inclusion of land use and fire disturbance against standard benchmarks. Using the Manhattan metric, results show improved simulation of vegetation cover across all observed datasets. Overall, disturbance improves the simulation of vegetation cover by 35 % compared to vegetation continuous field (VCF) observations from MODIS and 13 % compared to the Climate Change Initiative (CCI) from the ESA. Biases in grass extent are reduced from −66 % to 13 %. Total woody cover improves by 55 % compared to VCF and 20 % compared to CCI from a reduction in forest extent in the tropics, although simulated tree cover is now too sparse in some areas. Explicitly modelling fire and land use generally decreases tree and shrub cover and increases grasses. The results show that the disturbances provide important contributions to the realistic modelling of vegetation on a global scale, although in some areas fire and land use together result in too much disturbance. This work provides a substantial contribution towards representing the full complexity and interactions between land-use change and fire that could be used in Earth system models.
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Wilson, B. A., and G. R. Friend. "Responses of Australian Mammals to Disturbance: A Review." Australian Mammalogy 21, no. 1 (1999): 87. http://dx.doi.org/10.1071/am99087.

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The Australian native mammal fauna has evolved in an environment where 'natural' or endogenous disturbance is ongoing and widespread, be it fire, flood, drought or cyclones. Since European settlement, however, the type, scale, frequency and intensity of disturbance has changed and added a new suite of exogenous impacts including introduced predators and herbivores, vegetation clearance, habitat fragmentation, altered fire regimes, grazing and timber harvesting. This has presented novel and significant adaptive challenges to native mammals over a compressed time-scale, resulting in major extinctions, population declines and disruption to community structure. In this paper we examine the ecology of Australian mammals in the context of these new disturbances, and compare the response patterns observed, and assess the processes operating. In general, Australian mammalian successional patterns are closely tied to vegetation regeneration, which is related to the degree of disruption. Disturbances such as predation do not fall within this pattern. Mammalian successional states vary between different disturbance types within an ecosystem, depending on the critical elements of vegetation structure and composition. Landscape and climatic factors also affect successional patterns and need to be further investigated.
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Chambers, Jeanne C. "Seed and vegetation dynamics in an alpine herb field: effects of disturbance type." Canadian Journal of Botany 71, no. 3 (March 1, 1993): 471–85. http://dx.doi.org/10.1139/b93-052.

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Relationships among the aboveground vegetation, seed rain, and seed bank were examined on a late seral herb field characterized by pocket gopher disturbance and on an early seral gravel borrow that had been severely disturbed 35 years ago on the Beartooth Plateau, Montana. Aboveground vegetation cover was assessed by species in twelve 5-m2 plots. Seed rain was sampled during the 1988, 1989, and 1990 growing seasons with pitfall traps, and the soil seed bank was sampled in fall 1989, spring 1990, and fall 1990. The seed rain (filled seeds) on the borrow area ranged from 7730 to 14 009 seeds/m2 and was higher than that found on other alpine sites; that on the Geum turf ranged from 3375 to 6179 seeds/m2 and was similar to that for other alpine sites. Although highly variable among dates on the borrow area, the seed banks were similar to those of comparable alpine sites. Seed bank density ranged from 1980 to 6003 seeds/m2 on the borrow area and from 3202 to 4647 seeds/m2 on the Geum turf area. The Geum turf area had higher vegetation cover than the borrow area (87 vs. 25%) and higher numbers of species in the aboveground vegetation, seed rain, and seed bank. Relationships among the aboveground vegetation, seed rain, and seed bank were largely determined by the disturbance characteristics of the different sites and the life-history strategies of the dominant species. Medium-lived species, primarily grasses, with high production of small and compact seeds had colonized the borrow area. Despite establishment of other species, 35 years after disturbance the medium-lived species still dominated the aboveground vegetation, seed rain, and seed bank. Species abundances in the three different components were all highly correlated. In contrast, on the Geum turf area there were no correlations among the aboveground vegetation, seed rain, or seed bank. Long-lived forbs that produced low numbers of relatively large seeds dominated the aboveground vegetation and persisted on the area primarily in the vegetative state. The same medium-lived species that dominated the borrow area had the highest abundance in the seed rain on the Geum turf area and appeared to persist by colonizing small-scale disturbances caused by gopher burrowing. Short-lived species with small, long-lived seeds existed on the site primarily through a highly persistent seed bank. The relationships among the aboveground vegetation, seed rain, and seed bank on the Geum turf and borrow areas are compared with those observed for more temperate systems following disturbance. Key words: alpine, herb field, Geum turf, disturbance, vegetation cover, seed rain, seed bank, colonization, establishment, succession.
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Shibuya, S., K. Kubota, and M. Ohsawa. "Effects of small-scale management on biodiversity of an abandoned coppice forest in Japan: a case study on vegetation regeneration and ground beetle community." Web Ecology 8, no. 1 (November 19, 2008): 116–24. http://dx.doi.org/10.5194/we-8-116-2008.

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Abstract. We studied the effects of small-scale vegetation disturbances on biodiversity in an abandoned coppice forest in central Japan during 2004–2006. We assessed biodiversity by examining vegetation regeneration and by changes in the diversity and abundance of ground beetles after experimental manipulations including tree felling, vegetation clearing, and litter removal. Our experimental design was dictated by the need of producing only small disturbances; therefore we could not replicate plots. Instead, we used a repeated measures approach during three years to document the consistency of experimental effects. We found that the diversity of regenerating vegetation increased dramatically due to recruitment of many new species after clearing ground vegetation. Tree cutting caused strong environmental changes and affected vegetation regeneration rate but not diversity. Tree cutting also significantly increased the diversity of ground beetle species, while litter removal affected the abundance of ground beetles. Our results suggest that a sound conservation practice shall combine tree cutting with ground vegetation clearing and litter removal. Besides, conservation of abandoned forests may be based on low-intensity labor, including tree cutting on restricted areas. Finally, ground beetles appeared to be surprisingly sensitive to vegetation disturbance on a restricted area and thus can be suggested for monitoring such small-scale-disturbance-based conservation practices.
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Dissertations / Theses on the topic "Vegetation disturbance"

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Thonicke, Kirsten. "Fire disturbance and vegetation dynamics analysis and models /." Phd thesis, [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968686885.

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Bahre, Conrad J. "Human Disturbance and Vegetation in Arizona's Chiricahua Mountains in 1902." University of Arizona (Tucson, AZ), 1995. http://hdl.handle.net/10150/553077.

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Pryor, Philip J. "Disturbance studies on open Juncus trifidus heath and other Cairngorms vegetation." Thesis, University of Aberdeen, 1986. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU362517.

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The studies were set against a background of concern over the effects of high levels of recreation in the Gairn Gorm area on vegetation and fauna. The aims were to compare the effects of disturbance by trampling on different mountain vegetation types, to examine these effects in detail on one locally widespread vegetation type, Open Juncus trifidus heath, and to make detailed studies of the structure and dynamics of this vegetation type. Comparison of the effects of experimental trampling on six vegetation types showed Alpine Nardus grassland to be the least damaged, followed by Open Juncus trifidus heath. Dwarf-shrub heaths were more heavily damaged. Open Juncus trifidus heath also showed moderate recovery. Vegetation responses were largely determined by the responses of the most abundant species. Such responses supported groupings of species as showing high, moderate or low susceptibility to trampling. Density (4- 4-1 m-** excluding seedlings) and size-class structure were determined for a J.trifidus population at Cairn Lochan, and J.trifidus tussocks were found to be randomly dispersed. Numbers of seedlings seemed to vary from year to year and their spatial distribution was related to the type of surface. Most seedlings occurred on bare soil and on surfaces of fine and medium gravel. A reduction in seedling density from in June, 1980 to 1 . 5m22 in June, 1981 was recorded. The quantitative morphology of J.trifidus tussocks was documented. Tussock size was related to age, based on node counts and the annual production of tillers. The annual cycle of growth and the changes in tussock morphology with age were described. The annual rate of radial growth of tussocks was indicated to be 2 - 3mm per year. An age-state classification for J.trifidus was described. The effects of different surfaces on the germination and establishment of J.trifidus were examined experimentally using a range of gravel sizes and depths at four sites. The benefits of a gravel covering at high altitude were clear. Differences between treatments in numbers of seeds germinating, germination rate, survival, growth and development were sometimes difficult to interpret, but clear altitudinal trends existed. In general, the results supported observations on seedling occurrence in terms of differential effects of surfaces on germination and establishment of J.trifidus? Six Open Juncus trifidus heath sites were used to study the effects of disturbance level on the vegetation and the structure of the J.trifidus population. Significantly lower total plant and J.trifidus cover were only found where the level of disturbance was high. However, moderate disturbance was associated with an increase in smaller J.trifidus individuals, and the number of these and other sized individuals decreased with increasing disturbance. These results were supported by the findings of two studies of footpath disturbance. Wind tunnel experiments showed that surfaces modify microenvironmental conditions with consequent effects on the germination and early growth of J.trifidus. Changes in rates of water loss were important, and a thin layer of gravel benefited J.trifidus establishment. In general, disturbance was thought to influence the recruitment of individuals into the J.trifidus population and thereby modify population structure. The overall dynamics of Open Juncus trifidus heath were discussed and suggestions made for future work.
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Isaacs, Rachel E. "Spatial patterns of ice storm disturbance in the forested landscape of Ouachita Mountains, Arkansas and Oklahoma." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1515.

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Villegas, Juan Camilo, Darin J. Law, Scott C. Stark, David M. Minor, David D. Breshears, Scott R. Saleska, Abigail L. S. Swann, et al. "Prototype campaign assessment of disturbance-induced tree loss effects on surface properties for atmospheric modeling." WILEY, 2017. http://hdl.handle.net/10150/623209.

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Changes in large-scale vegetation structure triggered by processes such as deforestation, wildfires, and tree die-off alter surface structure, energy balance, and associated albedo-all critical for land surface models. Characterizing these properties usually requires long-term data, precluding characterization of rapid vegetation changes such as those increasingly occurring in the Anthropocene. Consequently, the characterization of rapid events is limited and only possible in a few specific areas. We use a campaign approach to characterize surface properties associated with vegetation structure. In our approach, a profiling LiDAR and hemispherical image analyses quantify vegetation structure and a portable mast instrumented with a net radiometer, wind-humidity-temperature stations in a vertical profile, and soil temperature-heat flux characterize surface properties. We illustrate the application of our approach in two forest types (boreal and semiarid) with disturbance-induced tree loss. Our prototype characterizes major structural changes associated with tree loss, changes in vertical wind profiles, surface roughness energy balance partitioning, a proxy for NDVI (Normalized Differential Vegetation Index), and albedo. Multi-day albedo estimates, which differed between control and disturbed areas, were similar to tower-based multiyear characterizations, highlighting the utility and potential of the campaign approach. Our prototype provides general characterization of surface and boundary-layer properties relevant for land surface models, strategically enabling preliminary characterization of rapid vegetation disturbance events.
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Lister, Tonya Whitcomb. "Forest Harvesting Disturbance and Site Preparation Effects on Soil Processes and Vegetation in a Young Pine Plantation." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/10051.

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The favorable growth of young loblolly pines (Pinus taeda L.) in response to controlling non-crop vegetation is well documented. However, the beneficial effects of non-crop vegetation on soil quality, nutrient cycling, and biodiversity have not been thoroughly explored. A study was conducted to determine the effects of harvesting-induced soil disturbance, bedding and chemical vegetation control on soil processes and productivity, and to characterize the effects of silvicultural treatments on non-crop vegetation dynamics. Study plots were established on a wet pine flat on South Carolina's lower Coastal Plain. Treatments included a range of 5 disturbance classes (undisturbed, compression tracked, shallowly rutted, deeply rutted and churned), two site preparation treatments (flat planted and bedded) and a gradient of vegetation control (no vegetation control, operational-level weed control and complete weed control). Soil disturbances had relatively small effects on soil quality. Soil compaction reduced soil aeration, but this condition was fully ameliorated by bedding. Churning did not degrade the soil physical environment in any measureable way, largely because slash and litter were incorporated into the surface soil. Bedding and churning increase soil biological activity, which increased nitrogen mineralization in excess of pine demand. When non-crop vegetation was chemically controlled, mineralization rates increased due to increases in surface soil temperatures. With less vegetation on the site, the amount of nitrogen sequestered was less, furthering the potential for nitrogen loss by leaching or denitrification. Soil quality improved somewhat with increasing levels of non-crop vegetation biomass; however, these beneficial effects were marginal during two years of operational vegetation control. The majority of dominant species on undisturbed treatment areas were woody, and soil disturbance, including bedding, reduced the proportions of these species. Silvicultural treatments had little effect on the prevalence of hydrophytic species on these wetland study sites. From a forest management point of view, for this site type, it appears that much is gained by reducing competition from non-crop vegetation; the benefits of controlling the density of non-crop vegetation for encouraging early pine growth are clear. While non-crop vegetation slightly improved system function by sequestering available nitrogen, increasing diversity and increasing soil quality, these improvements do not appear to be critical to forest function on these inherently high-quality sites.
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Hough-Snee, Nathaniel. "Relationships between Riparian Vegetation, Hydrology, Climate and Disturbance across the Western United States." Thesis, Utah State University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10154374.

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Flow regime, the magnitude, duration and timing of streamflow, controls the development of floodplain landforms on which riparian vegetation communities assemble. Streamflow scours and deposits sediment, structures floodplain soil moisture dynamics, and transports propagules. Flow regime interacts with environmental gradients like climate, land-use, and biomass-removing disturbance to shape riparian plant distributions across landscapes. These gradients select for groups of riparian plant species with traits that allow them to establish, grow, and reproduce on floodplains – riparian vegetation guilds. Here I ask, what governs the distributions of groups of similar riparian plant species across landscapes? To answer this question, I identify relationships between riparian vegetation guilds and communities and environmental gradients across the American West. In Chapter One, I discuss guild-based classification in the context of community ecology and streams. In Chapter Two, I identified five woody riparian vegetation guilds across the interior Columbia and upper Missouri River Basins, USA, based on species’ traits and morphological attributes. I modeled guild occurrence across environmental gradients, including climate, disturbance, channel form attributes that reflect hydrology, and relationships between guilds. I found guilds’ distributions were related to hydrology, disturbance, and competitive or complementary interactions (niche partitioning) between co-occurring guilds. In Chapter Three, I examine floodplain riparian vegetation across the American West, identifying how hydrology, climate, and floodplain alteration shape riparian vegetation communities and their guilds. I identified eight distinct plant communities ranging from high elevation mixed conifer forests to gallery cottonwood forests to Tamarisk-dominated novel shrublands. I aggregated woody species into four guilds based on their traits and morphological attributes: an evergreen tree guild, a mesoriparian shrub guild, a mesoriparian tree guild, and a drought and hydrologic disturbance tolerant shrub guild. Communities and guilds’ distributions were governed by climate directly, and indirectly as mediated through streamflow. In Chapter Four, I discuss the utility of guild-based assessments of riparian vegetation, current limitations to these approaches, and potential future applications of the riparian vegetation guild concept to floodplain conservation and management. The classification of vegetation into functional trait-based guilds provides a flexible, framework from which to understand riparian biogeography, complementing other models frameworks for riparian vegetation.

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McManus, Kay Barbara. "Airborne thermography and ground geophysical investigation for detecting shallow ground disturbance under vegetation." Thesis, Durham University, 2004. http://etheses.dur.ac.uk/3127/.

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This thesis discusses the potential of airborne thermal prospection for detecting shallow ground disturbance beneath vegetation based on images acquired by the NERC Airborne Thematic Mapper (ATM) at thermal infrared wavelengths. Shallow ground disturbance creates a differential heat flux due to a variation in the thermal properties between disturbed and undisturbed soils. When observed above a canopy, the effect of vegetation growth on the thermal regime of the underlying soils is poorly understood. The research extends current understanding by examining areas where ground disturbance is known to exist under variable vegetation cover at an archaeological site at Bosworth, Leicestershire and areas of abandoned mine activity on Baildon Moor, W. Yorkshire and in the N. Pennine Orefield, Weardale. The investigation focuses on qualitative image interpretation techniques, where anomalies on day and night thermal images are compared with those manifest on the multispectral images, and a more quantitative approach of Apparent Thermal Inertia (ATI) modelling. Physical thermal inertia is a parameter that is sensitive to volumetric variations in the soil, but cannot be measured directly using remote sensing techniques. However, an apparent thermal inertia is determined by examining the day and night temperature contrast of the surface, where spatial variations can signify potential features buried in the near-surface environment. Ground temperature profiling at the Bosworth site indicates that diurnal heat dissipates between 0.20-0.50m at an early stage in vegetation development with progressively lower diurnal amplitudes observed at 0.20m as the vegetation develops. Results also show that the time of diurnal maximum temperature occurs progressively later as vegetation develops, implying an importance for thermal image acquisition. The quantitative investigation concentrates on the Bosworth site where extensive ground geophysical prospection was performed and vertical soil samples extracted across features of variable multispectral, thermal and ATI response to enable comparison of the observed airborne thermal response with physical soil properties. Results suggest that there is a high correlation between ATI and soil moisture properties at 0.15-0.25m depth (R(^2)=0.99) at an early stage in cereal crop development but has a high correlation at a wider depth range (0.10-0.30m) at a later stage in development (R(^2)=0.98). The high correlation between physical ground disturbance and the thermal response is also corroborated qualitatively with the results of the resistivity surveys. The ATI modelling reveals similar features to those evident on day or night thermal images at an early stage in vegetation growth, suggesting that thermal imaging during the day at an early stage in vegetation growth may supply sufficient information on features buried in the near-surface environment. Airborne thermal imaging therefore provides a useful complementary prospection tool for archaeological and geological applications for surfaces covered by vegetation.
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Wilson, Barbara Anne, and mikewood@deakin edu au. "The effects of vegetation, fire and other disturbance factors on small mammal, ecology and conservation." Deakin University. School of Science, 1990. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051111.135542.

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The relationship of vegetation and disturbance factors to the distribution, abundance and diversity of small mammals in the eastern Otway region, Victoria were investigated. Antechinus stuartii, Rattus fuscipes and Rattus lutreolus were widely distributed and occurred in the majority of the eleven floristic vegetation groups identified. Antechinus minimus, Antechinus swainsonnii and Pseudomys novaehollandiae had restricted distributions and were recorded in only two or three vegetation groups. New information on the distribution of the rare species P. novaehollandiae, was obtained and two floristically rich vegetation groups that it preferred were identified. Species-rich small mammal communities occurred in vegetation communities with high numbers of sclerophyll plant species and high structural diversity. Maximum food resources were considered to be provided in these communities. Local habitat diversity was also correlated with species-richness. Small mammal abundance was maximum in non-sclerophyllous canmunities, where high plant productivity was considered to be important. For the first time, the presence of the plant pathogen Phytophthora cinnamomi was shown to affect small mammals. It was associated with small mammal communities of low species richness and abundance, Recovery of small mammal populations after wildfire was slow until the fourth year. Mus musculus reached peak abundance from 2-3 years and then declined rapidly. P. novaehollandiae was the only native species that achieved maximum abundance early in the succession. A. stuartii, R. fuscipes and R. lutreolus approached maximum abundance in mid-succession, while Isoodon obesulus was a mid- to late-successional species. A. minimus survived the fire, but did not persist after one year. The pattern of succession was influenced by attributes of species, such as survival after fire, their ability to disperse and reproduce.
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Allen, Bruce Peter. "Vegetation dynamics and response to disturbance, in floodplain forest ecosystems with a focus on lianas." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1179427491.

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Books on the topic "Vegetation disturbance"

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H, Webb Robert. The response of vegetation to disturbance in Death Valley National Monument, California. Washington: U.S. G.P.O., 1988.

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Fiddler, Gary. Treatment duration and time since disturbance affect vegetation development in a young ponderosa pine plantation. Albany, CA: U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Research Station, 1999.

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Ager, Alan A. Software for calculating vegetation disturbance and recovery by using the equivalent clearcut area model. Portland, OR: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2005.

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Coleman, T. W. Disturbance from Southern pine beetle, suppression, and wildfire affects vegetation composition in central Louisiana: A case study. Asheville, NC: U.S. Dept. of Agriculture, Forest Service, Southern Research Station, 2010.

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Gradowski, Tomasz Aleksander. The influences of geoclimatic site conditions, disturbance type and canopy composition on the composition of understorey vegetation of boreal mixedwoods. Ottawa: National Library of Canada, 2001.

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McPherson, Guy R. Disturbance and climate change in United States/Mexico borderland plant communities: A state-of-the-knowledge review. Fort Collins, CO (240 W. Prospect Rd., Fort Collins 80526-2098): U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Research Station, 2000.

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Miller, Richard F. A field guide for rapid assessment of post-wildfire recovery potential in sagebrush and Piñon-Juniper ecosystems in the Great Basin: Evaluating resilience to disturbance and resistance to invasive annual grasses and predicting vegetation response. Fort Collins, CO: United States Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2015.

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Huebner, Cynthia D. Effects of disturbance and environment on the chaparral-woodland-grassland landscape mosaic of central Arizona. 1996.

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Quinby, Peter Allan *. Vegetation, environment, and disturbance in the upland forested landscape of Algonquin Park, Ontario. 1988.

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Gecy, Jeanne Leslie. Propagule sources, disturbance characteristics and the inital establishment of riparian vegetation after debris flows. 1988.

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Book chapters on the topic "Vegetation disturbance"

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Mazzoleni, Stefano, Francisco Rego, Francesco Giannino, Christian Ernest Vincenot, Gian Boris Pezzatti, and Colin Legg. "Vegetation and Disturbance." In Environmental Modelling, 235–51. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118351475.ch14.

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Ernst, W. H. O. "Population differentiation in grassland vegetation." In Disturbance in Grasslands, 213–28. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4055-0_14.

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Fischer, A. "Vegetation development from denuded ground to grassland." In Disturbance in Grasslands, 119–28. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4055-0_8.

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Sumina, O. I., and B. C. Forbes. "Vegetation Responses to Anthropogenic Disturbance." In Social and Environmental Impacts in the North: Methods in Evaluation of Socio-Economic and Environmental Consequences of Mining and Energy Production in the Arctic and Sub-Arctic, 207–23. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-1054-2_15.

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Thalen, D. C. P., H. Poorter, L. A. P. Lotz, and P. Oosterveld. "Modelling the structural changes in vegetation under different grazing regimes." In Disturbance in Grasslands, 167–83. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4055-0_11.

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Beeftink, W. G. "Vegetation responses to changes in tidal inundation of salt marshes." In Disturbance in Grasslands, 97–117. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4055-0_7.

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Sharpe, D. M., G. R. Guntenspergen, C. P. Dunn, L. A. Leitner, and F. Stearns. "Vegetation Dynamics in a Southern Wisconsin Agricultural Landscape." In Landscape Heterogeneity and Disturbance, 137–55. New York, NY: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4612-4742-5_8.

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Mcandrews, John H. "Human disturbance of North American forests and grasslands: The fossil pollen record." In Vegetation history, 673–97. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3081-0_18.

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Burrows, Colin J. "Changes in some temperate forests after disturbance." In Processes of Vegetation Change, 298–329. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-3058-5_9.

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Walker, D. A. "Arctic Alaskan Vegetation Disturbance and Recovery." In Disturbance and Recovery in Arctic Lands, 457–79. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5670-7_27.

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Conference papers on the topic "Vegetation disturbance"

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Timoshok, E. N. "Peculiarities of forming and functioning of the high-mountain forests of the Severo-Chuiskiy range (Central Altai)." In Problems of studying the vegetation cover of Siberia. TSU Press, 2020. http://dx.doi.org/10.17223/978-5-94621-927-3-2020-38.

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Larch forests are most common in the modern high-mountain forests of the Altai. Some relic old-growth Siberian stone pine forests are ingrained to them. Our investigations are fetched out the modern Siberian stone pine forests is the final stage of post-fire succession but the reaching of the stage was possible only in periods with high precipitation levels. The cause which prevents forming of such forests in the modern period in a long time required for the succession as post-fire succession is developing by the inhibition model: successional predecessor species (larch) prevent colonization of successor species (Siberian stone pine) until the disturbance will damage the predecessor population. As a result reaching of the stone pine tree stage may require several hundred years. The fires are usually prevent reaching of this stage.
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O'Connell, Jerome, John Connolly, and Nicholas M. Holden. "A multispectral multiplatform based change detection tool for vegetation disturbance on Irish peatlands." In SPIE Remote Sensing, edited by Christopher M. U. Neale and Antonino Maltese. SPIE, 2011. http://dx.doi.org/10.1117/12.898562.

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Cabezas, Julian, and Fabian E. Fassnacht. "Reconstructing the Vegetation Disturbance History of a Biodiversity Hotspot in Central Chile Using Landsat, Bfast and Landtrendr." In IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2018. http://dx.doi.org/10.1109/igarss.2018.8518863.

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Lei, Yang, Paul Siqueira, Daniel Clewley, and Richard Lucas. "Observation of vegetation vertical structure and disturbance using L-band InSAR over the Injune region in Australia." In IGARSS 2012 - 2012 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2012. http://dx.doi.org/10.1109/igarss.2012.6351214.

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Turyahikayo, Agnes. "Assessing land use induced disturbance to vegetation cover in the upper Molopo catchment, South Africa, using Landsat images." In IGARSS 2015 - 2015 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2015. http://dx.doi.org/10.1109/igarss.2015.7326455.

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Fuquan, TANG, and GU Jin. "Remote sensing monitoring of surface vegetation and soil moisture changes and the disturbance effect of coal mining subsidence in the Western mining area of China." In 2018 Fifth International Workshop on Earth Observation and Remote Sensing Applications (EORSA). IEEE, 2018. http://dx.doi.org/10.1109/eorsa.2018.8598633.

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Coupal, Brian, and Paula Bentham. "If You Build It, Will They Come? Caribou Habitat Restoration for Pipeline Projects." In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33577.

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The federal Recovery Strategy for the Woodland Caribou (Rangifer tarandus caribou), Boreal Population in Canada, identifies coordinated actions to reclaim woodland caribou habitat as a key step to meeting current and future caribou population objectives. Actions include restoring industrial landscape features such as roads, seismic lines, pipelines, cut-lines, and cleared areas in an effort to reduce landscape fragmentation and the changes in caribou population dynamics associated with changing predator-prey dynamics in highly fragmented landscapes. Reliance on habitat restoration as a recovery action within the federal Recovery Strategy is high, identifying 65% undisturbed habitat in a caribou range as the threshold to providing a 60% chance that a local population will be self-sustaining. In alignment with the federal Recovery Strategy, Alberta’s Provincial Woodland Caribou Policy identifies habitat restoration as a critical component of long-term caribou habitat management. Habitat restoration initiatives of Alberta’s historical industrial footprint within caribou ranges began in 2001 and have largely focused on linear corridors, including pipelines. Initiatives include revegetation treatments, access control programs and studies, and restricting the growth of plant species that are favourable to moose and deer, the primary prey for wolves. Habitat restoration for pipelines also includes pre-construction planning to reduce disturbance and create line-of-sight breaks, and construction techniques that promote natural vegetation recovery. Lessons learned from habitat restoration programs implemented on pipeline projects in northeastern Alberta will be shared as an opportunity to improve common understanding of restoration techniques, the barriers to implementation, and potential outcomes.
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Бакланов, П. Я. "GEOGRAPHICAL GRADIENTS - AS A MEASUREMENT OF GEOGRAPHICAL SPACE." In Геосистемы Северо-Восточной Азии. Crossref, 2021. http://dx.doi.org/10.35735/tig.2021.56.55.002.

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Предлагается более широкий круг градиентных измерений географического пространства. В природной сфере – различия в биоразнообразии и ландшафтном разнообразии. В природно-ресурсной сфере – различия в запасах и продуктивности природных ресурсов, имеющих пространственно непрерывное распределение (лесных, земельных), а также – различия в сочетаниях природных ресурсов. Возможны градиентные оценки различий расчетных величин, например, суммарного природно-ресурсного потенциала. В экологической сфере в виде градиентов можно оценивать различия в загрязнении или нарушенности земельного, растительного покрова. В социально-экономической сфере с помощью градиентов можно оценивать различия ряда расчетных величин: плотности населения, экономической плотности, полей тяготения поселений, поля потенциальных затрат и т.п. Предлагается градиентное измерение различий однородных характеристик поселения-центра и сочетания поселений, входящих в круг с условно единичным радиусом, проведенным из центра. A wider range of gradient dimensions of geographical space is proposed. In the natural sphere these are differences in biodiversity and landscape diversity. In the natural resource sphere these are differences in the reserves and productivity of natural resources, which have a spatially continuous distribution (forest, land), as well as differences in the combinations of natural resources. Gradient estimates of differences in the calculated values, such as the total natural resource potential, are possible. In the environmental sphere, differences in pollution or disturbance of land and vegetation cover can be estimated as gradients. In the socio-economic sphere, the gradients can be used to estimate differences in a number of calculated values: population density, economic density, gravity fields of settlements, potential cost fields, etc. A gradient measurement of differences in the homogeneous characteristics of a settlement-center and a combination of settlements, entering the circle with a conventionally single radius drawn from the center, is proposed.
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Шамсутдинова, Эльмира, Elmira Shamsutdinova, Нариман Шамсутдинов, Nariman Shamsutdinov, Юрий Каминов, Yuri Kaminov, Зебри Шамсутдинов, and Zebri Shamsutdinov. "SPECIES COMPOSITION AND PRODUCTIVITY OF IMPROVED PHYTOCENOSES WITH MINIMAL DISTURBANCES OF THE NATURAL VEGETATION." In Multifunctional adaptive feed production. ru: Federal Williams Research Center of Forage Production and Agroecology, 2019. http://dx.doi.org/10.33814/mak-2019-21-69-70-80.

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The results of species composition studies and fodder productivity of natural desert pastures with their phytomelioration improvement are presented. It is established that phytomelioration improvement of desert pastures on the basis of partial (belt) processing of pasture lands leads to an increase in the number of ephemeral-ephemeroid vegetation, the formation of a denser grass stand and an increase in the fodder productivity of phytomelioration pasture lands.
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Shafer, David S., David DuBois, Vic Etyemezian, Ilias Kavouras, Julianne J. Miller, George Nikolich, and Mark Stone. "Fire as a Long-Term Stewardship Issue for Soils Contaminated With Radionuclides in the Western U.S." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7181.

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On both U.S. Department of Energy (DOE) and U.S. Department of Defense sites in the southwestern United States (U.S.), significant areas of surface soils are contaminated with radionuclides from atmospheric nuclear testing, and with depleted uranium, primarily from military training. At DOE sites in Nevada, the proposed regulatory closure strategy for most sites is to leave contaminants in place with administrative controls and periodic monitoring. Closure-in-place is considered an acceptable strategy because the contaminated sites exist on access-restricted facilities, decreasing the potential risk to public receptor, the high cost and feasibility of excavating contaminated soils over large areas, and the environmental impacts of excavating desert soils that recover very slowly from disturbance. The largest of the contaminated sites on the Tonopah Test Range in Nevada covers over 1,200 hectares. However, a factor that has not been fully investigated in the long-term stewardship of these sites is the potential effects of fires. Because of the long half-lives of some of the contaminants (e.g., 24,100 years for 239Pu) and changes in land-cover and climatic factors that are increasing the frequency of fires throughout the western U.S., it should be assumed that all of these sites will eventually burn, possibly multiple times, during the timeframe when they still pose a risk. Two primary factors are contributing to increased fire frequency. The first is the spread of invasive grasses, particularly cheatgrass (Bromus tectorum and Bromus rubens), which have out-competed native annuals and invaded interspaces between shrubs, allowing fires to burn easier. The second is a sharp increase in fire frequency and size throughout the western U.S. beginning in the mid-1980s. This second factor appears to correlate with an increase in average spring and summer temperatures, which may be contributing to earlier loss of soil moisture and longer periods of dry plant biomass (particularly from annual plants). The potential risk to site workers from convective heat dispersion of radionuclide contaminants is an immediate concern during a fire. Long-term, post-fire concerns include potential changes in windblown suspension properties of contaminated soil particles after fires because of loss of vegetation cover and changes in soil properties, and soil erosion from surface water runoff and fluvial processes.
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Reports on the topic "Vegetation disturbance"

1

Clark, James, Lara Kueppers, Daniel Stover, and Peter Wyckoff. Disturbance and Vegetation Dynamics in Earth System Models: Workshop Report. Office of Scientific and Technical Information (OSTI), November 2018. http://dx.doi.org/10.2172/1616531.

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Ager, Alan A., and Caty Clifton. Software for calculating vegetation disturbance and recovery by using the equivalent clearcut area model. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2005. http://dx.doi.org/10.2737/pnw-gtr-637.

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Fiddler, Gary O., and Philip M. McDonald. Treatment duration and time since disturbance affect vegetation development in a young ponderosa pine plantation. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station, 1999. http://dx.doi.org/10.2737/psw-rn-424.

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McDonald, Philip M., and Gary O. Fiddler. Treatment duration and time since disturbance affect vegetation development in a young California red fir plantation. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station, 1997. http://dx.doi.org/10.2737/psw-rp-233.

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McDonald, Philip M., and Gary O. Fiddler. Development of vegetation in a young ponderosa pine plantation: effect of treatment duration and time since disturbance. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station, 2007. http://dx.doi.org/10.2737/psw-rp-251.

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Coleman, T. W., Alton Martin, J. R. Meeker, S. R. Clarke, and L. K. Rieske. Disturbance from southern pine beetle, suppression, and wildfire affects vegetation composition in central Louisiana: a case study. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station, 2010. http://dx.doi.org/10.2737/srs-gtr-129.

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Coleman, T. W., Alton Martin, J. R. Meeker, S. R. Clarke, and L. K. Rieske. Disturbance from southern pine beetle, suppression, and wildfire affects vegetation composition in central Louisiana: a case study. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station, 2010. http://dx.doi.org/10.2737/srs-gtr-129.

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Reynolds, J. F. Effects of disturbance on ecosystem dynamics of tundra and riparian vegetation: A project in the R4D program. Final report. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/217722.

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Everham, E. M. III. Hurricane Disturbance and Recovery: An Empirical and Simulation Study of Vegetation Dynamics in the Luquillo Experimental Forest, Puerto Rico. Office of Scientific and Technical Information (OSTI), May 1996. http://dx.doi.org/10.2172/652928.

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Miller, Richard F., Jeanne C. Chambers, and Mike Pellant. A field guide for selecting the most appropriate treatment in sagebrush and pinon-juniper ecosystems in the Great Basin: Evaluating resilience to disturbance and resistance to invasive annual grasses, and predicting vegetation response. Ft. Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2014. http://dx.doi.org/10.2737/rmrs-gtr-322.

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