Tesi sul tema "Fire ecology"
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Chau, Kam-chiu Lawrence. "The ecology of fire in Hong Kong /". Hong Kong : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18933798.
Testo completoChau, Kam-chiu Lawrence, e 周錦超. "The ecology of fire in Hong Kong". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B3123348X.
Testo completoKozlowski, Donald F. "Pre-fire functional condition and post-fire channel changes in northern Nevada streams 1999-2001 fires /". abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1447637.
Testo completoDe, Groot William J. "Fire ecology of Betula glandulosa Michx". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ29028.pdf.
Testo completoArchibald, Robert D. "Fire and the persistence of tuart woodlands /". Access via publisher's site, 2006. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20071130.140115.
Testo completoDufilho, Michael Stephen. "The Children's Forest Association fire ecology hike". CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2935.
Testo completoSmall, Erin D. "Fire Ecology in the Acadian Spruce-Fir Region and Vegetation Dynamics Following the Baxter Park Fire of 1977". Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/SmallED2004.pdf.
Testo completoKodandapani, Narendran. "Fire regimes and their ecological effects in seasonally dry tropical ecosystems in the Western Ghats, India". Diss., Connect to online resource - MSU authorized users, 2006.
Cerca il testo completoBerkley, Evelyn L. "Temporal and spatial variability of fire occurrence in Western Oregon, A.D. 1200 to present /". view abstract or download file of text, 2000. http://wwwlib.umi.com/cr/uoregon/fullcit?p1402785.
Testo completoComputer optical disc in pocket of back cover titled: Animated time series of fire occurrence in Western Oregon, A.D. 1200-2000. Typescript. Includes vita and abstract. Includes bibliographical references (leaves 107-110). Also available for download via the World Wide Web; free to UO users.
McGinley, Susan. "Fire Management in the West: Research and Teaching of Fire Ecology in Arizona". College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2003. http://hdl.handle.net/10150/622227.
Testo completoKraaij, Tineke. "Fire regimes in eastern coastal fynbos: drivers, ecology and management". Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1008047.
Testo completoVihnanek, Robert E. "The effects of slashburning on the growth and nutrition of young Douglas-fir plantations in some dry, salal-dominated ecosystems". Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25062.
Testo completoForestry, Faculty of
Graduate
Falk, Donald Albert. "Scaling rules for fire regimes". Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/290135.
Testo completoBalfour, Victoria Nairn. "The effect of forest fires on runoff rates the role of duff removal and surface sealing by vegetative ash, western Montana /". Diss., [Missoula, Mont.] : The University of Montana, 2007. http://etd.lib.umt.edu/theses/available/etd-12202007-181528/.
Testo completoFord, Paulette Louise. "Scale, ecosystem resilience, and fire in shortgrass steppe". Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/289192.
Testo completoManning, Nancy Denise. "Weaving stories around the old fire: Using heuristic inquiry as a path to personal and professional growth". CSUSB ScholarWorks, 2007. https://scholarworks.lib.csusb.edu/etd-project/3295.
Testo completoJohnson, Roxane Jeannette. "Effects of fire on Agave palmeri". Thesis, The University of Arizona, 2001. http://hdl.handle.net/10150/291511.
Testo completoMaghran, Lauren A. "Recovery and Changes in Plant Communities from Two Large Fires in the Santa Catalina Mountains, Arizona, USA". Thesis, The University of Arizona, 2014. http://hdl.handle.net/10150/337365.
Testo completoLandmann, Tobias. "A case study for Skukuza : estimating biophysical poperties of fires using EOS-MODIS satellite data ; a field and remote sensing study to quantify burnt area and fire effects in South African semi-arid savannas /". Aachen : Shaker-Verl, 2004. http://www.loc.gov/catdir/toc/fy0708/2006485603.html.
Testo completoPredmore, Stephen Andrew. "Presettlement vegetation and fire in Escambia and Covington counties, Alabama". Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/master's/PREDMORE_STEPHEN_32.pdf.
Testo completoIves, Christopher M. "Fire moss as a tool for post-wildfire ecosystem restoration". Thesis, Northern Arizona University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10129633.
Testo completoIncreasingly large and severe fires across the western United States are creating difficult challenges for land managers. Despite the wide usage of current post-fire hillslope treatments, their effectiveness varies. Some research even shows negative impacts, such as the spread of invasive species.
The use of select post-fire colonizing mosses or “fire moss” is a promising post-fire stabilization treatment and longer-term restoration tool that has never been investigated for use in high severity burned environments. Fire mosses possess traits that make them ideal candidates for restoration purposes such as: universal distribution, desiccation tolerance, high water holding capacity, and soil aggregation ability. Fire mosses also are apparently succeeded by vascular plants. Harnessing the restoration power of fire mosses, finding ways to bring them to additional critical post-fire sites, and hastening their arrival on scene could provide a valuable service not currently being utilized. Our research addresses the basic questions surrounding the effectiveness of fire mosses in post-fire stabilization and restoration since there is no know prior work in this field. Field experiments were conducted to determine if fire moss could be grown on post-fire sites. Results show that inoculation increased moss growth by nine times and moss cover was an order of magnitude greater on high severity burned plots than either moderate or unburned plots. Subsequently, greenhouse experiments were conducted to find optimal growth conditions under which an inoculum supply source could be grown for field application. Results show that greatest moss growth occurred under five and seven day per week watering schedules, with fire moss Bryum argenteum constituting a majority of overall moss growth in the less frequent watering schedules suggesting that this moss would be the best candidate for use in marginal fire moss habitat (lower elevation, drier, and more exposed sites). Additionally, mosses Funaria hygrometrica and Ceratodon purpureus grew more prolifically in sample units with ash, while the opposite was true for Bryum argenteum, suggesting that future research should be conducted on the underlying mechanism. Overall, fire moss showed promise as a plausible restoration material, leading us toward future research given its potential to avoid problems caused by other hillslope treatments.
Negreiros, Gustavo Hees de. "Understanding and modeling ecological processes controlling flammability in seasonally dry evergreen forests of the Brazillian Amazon /". Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/5528.
Testo completoWills, Cameron. "Effects of repeated fire on the savanna / forest boundary". Bachelor's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/26506.
Testo completoTrusty, Paul Evan. "Impact of severe fire on ectomycorrhizal fungi of whitebark pine seedlings". Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/trusty/TrustyP0509.pdf.
Testo completoBauer, John M. "Fire history and stand structure of a central Nevada pinyon-juniper woodland". abstract and full text PDF (free order & download UNR users only), 2006. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1436023.
Testo completoWilson, Barbara Anne. "The effects of vegetation, fire and other disturbance factors on small mammal ecology and conservation". Click here to access, 1990. http://tux.lib.deakin.edu.au/adt-VDU/public/adt-VDU20051111.135542.
Testo completoSubmitted to the Dept. of Biological Sciences of the School of Sciences, Deakin University. Appendices are separately published papers. Bibliography: leaves 274-302.
Shrestha, Hari Ram. "Post-fire recovery of carbon and nitrogen in sub-alpine soils of South-eastern Australia /". Connect to thesis, 2009. http://repository.unimelb.edu.au/10187/6963.
Testo completoThis study investigated post-fire recovery of soil C and N in four structurally different sub-alpine plant communities (grassland, heathland, Snowgum and Alpine ash) of south-eastern Australia which were extensively burnt by landscape-scale fires in 2003. The amount and isotopic concentration of C and N in soils to a depth of 20 cm from Alpine ash forest were assessed five years after fire in 2008 and results were integrated with measurements taken immediately prior to burning (2002) and annually afterwards.
Because the historical data set, comprised of three soil samplings over the years 2002 to 2005, consisted of soil total C and N values which were determined as an adjunct to 13C and 15N isotopic studies, it was necessary to establish the accuracy of these IRMS-derived measurements prior to further analysis of the dataset. Two well-established and robust methods for determining soil C (total C by LECO and oxidizable C by the Walkley-Black method) were compared with the IRMS total C measurement in a one-off sampling to establish equivalence prior to assembling a time-course change in soil C from immediately pre-fire to five years post-fire. The LECO and IRMS dry combustion measurements were essentially the same (r2 >0.99), while soil oxidizable C recovery by the Walkley-Black method (wet digestion) was 68% compared to the LECO/IRMS measurements of total C. Thus the total C measurement derived from the much smaller sample size (approximately 15 mg) combusted during IRMS are equivalent to LECO measurement which require about 150 mg of sample.
Both total C and N in the soil of Alpine ash forests were significantly higher than soils from Snowgum, heathland and grassland communities. The ratio of soil NH4+ to NO3- concentration was greater for Alpine ash forest and Snow gum woodland but both N-fractions were similar for heathland and grassland soils. The abundance of soil 15N and 13C was significantly depleted in Alpine ash but both isotopes were enriched in the heathland compared to the other ecosystems. Abundance of both 15N and 13C increased with soil depth.
The natural abundance of 15N and 13C in the foliage of a subset of non-N2 fixing and N2 fixing plants was measured as a guide to estimate BNF inputs. Foliage N concentration was significantly greater in N2 fixers than non-N2 fixers while C content and 13C abundance were similar in both functional groups. Abundance of 15N was depleted in the N2 fixing species but was not significantly different from the non-N2 fixers to confidently calculate BNF inputs based on the 15N abundance in the leaves.
The total C pool in soil (to 20 cm depth) had not yet returned to the pre-fire levels in 2008 and it was estimated that such levels of C would be reached in another 6-7 years (about 12 years after the fire). The C and N of soil organic matter were significantly enriched in 15N and 13C isotopes after fire and had not returned to the pre-fire levels five years after the fire. It is concluded that the soil organic N pool can recover faster than the total C pool after the fire in the Alpine ash forests.
Conedera, Marco [Verfasser], e C. [Akademischer Betreuer] Kramer. "Implementing fire history and fire ecology in fire risk assessment : the study case of Canton Ticino (southern Switzerland) / Marco Conedera. Betreuer: C. Kramer". Karlsruhe : KIT-Bibliothek, 2009. http://d-nb.info/1014099269/34.
Testo completoMinor, John Jesse, e John Jesse Minor. "Anthropogenic Influences on Fire Regimes and Post-Fire Ecological Communities in an Arizona Sky Island". Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/626366.
Testo completoTeague, Kara Elizabeth. "Environmental ramifications of the fire ecology of slash pine (Pinus elliottii) a study of population dynamics and dispersal following a fire event /". [Tampa, Fla. : s.n.], 2003. http://purl.fcla.edu/fcla/etd/SFE0000089.
Testo completoDolan, Corrine, e Alix Rogstad. "Living with Wildfire in Arizona". College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2007. http://hdl.handle.net/10150/146928.
Testo completoUACE Firewise publications (8 total)
The Living with Wildfire in Arizona educational materials synthesize the most recent scientific and technically known information available on fire ecology for the ecosystems of Arizona, including mixed conifer forests, ponderosa pine forests, pinyon-juniper and oak woodlands, chaparral, grasslands and desert scrub, and riparian areas. The materials are meant to educate homeowners living in the wildland urban interface areas as to the natural function of fire in each ecosystem and what significant changes have impacted fire behavior over time. Information includes the natural role of fire, how and why fire behavior has changed over time, and the role that humans play in affecting that change in protecting themselves and their property.
Prichard, Susan J. "Spatial and temporal dynamics of fire and vegetation change in Thunder Creek watershed, North Cascades National Park, Washington /". Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/5601.
Testo completoOakley, Brian B. "The ecology and biogeography of the Ceanothus-Frankia symbiosis in California /". Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/5589.
Testo completoAbolt, Rena Ann Peck 1968. "Fire histories of upper elevation forests in the Gila Wilderness, New Mexico via fire scar and stand age structure analyses". Thesis, The University of Arizona, 1997. http://hdl.handle.net/10150/278601.
Testo completoKeifer, MaryBeth 1963. "Age structure and fire disturbance in the southern Sierra Nevada subalpine forest". Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/278045.
Testo completoDíaz, Avalos Carlos. "Space-time analysis of forest fires /". Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/6375.
Testo completoCatry, Filipe Xavier. "Fire effects on forest species in mediterranean basin ecosystems: ecology and management". Doctoral thesis, ISA, 2013. http://hdl.handle.net/10400.5/6151.
Testo completoCharpentier, Jessica E. "Wildland Fire Disturbance - Recovery Dynamics in Upland Forests at Acadia National Park, Maine". Antioch University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1589622211058728.
Testo completoRana, Dangi Sadikshya. "Recovery of soil microbial communities after disturbance fire and surface mining /". Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1663059791&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Testo completoJacobs, Karen Marie. "Fire and vegetation history of the last 2000 years in Jackson Hole, Grand Teton National Park, Wyoming". Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/jacobs/JacobsK0507.pdf.
Testo completoOwusu-Afriyie, Kennedy. "Forest fire incidence, damage and control measures in Ghana". Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=26030.
Testo completoLandmann, Tobias. "A case study for Skukuza : estimating biophysical properties of fires using EOS-MODIS satellite data : a field and remote sensing study to quantify burnt area and fire effects in South African semi-arid savannas /". Aachen : Shaker, 2004. http://www.loc.gov/catdir/toc/fy0708/2006485603.html.
Testo completoZalatan, Rebecca. "Dendroecological analysis of successional dynamics after fire in the Shakwak Trench, southwest Yukon Territory". Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6416.
Testo completoAssal, Timothy J. "The ecological legacies of drought, fire, and insect disturbance in western North American forests". Thesis, Colorado State University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=3746145.
Testo completoTemperate forest ecosystems are subject to various disturbances including insect agents, drought and fire, which can have profound effects on the structure of the ecosystem for many years after the event. Impacts of disturbance can vary widely, therefore an understanding of the legacies of an event are critical in the interpretation of contemporary forest patterns and those of the near future. The primary objective of this dissertation was to investigate the ecological legacies of drought, beetle outbreak and ensuing wildfire in two different ecosystems. A secondary objective of my research, data development, was motivated by a lack of available data which precluded ecological investigation of each disturbance.
I studied the effects of drought on deciduous and coniferous forest along a forest-shrubland ecotone in the southern portion of the Wyoming Basin Ecoregion. The results show that forests in the region have experienced high levels of cumulative drought related mortality over the last decade. Negative trends were not consistent across forest type or distributed randomly across the study area. The patterns of long-term trends highlight areas of forest that are resistant, persistent or vulnerable to severe drought.
In the second thread of my dissertation, I used multiple lines of evidence to retrospectively characterize a landscape scale mountain pine beetle disturbance from the 1970s in Glacier National Park. The lack of spatially explicit data on this disturbance was a major data gap since wildfire had removed some of the evidence from the landscape. I used this information to assess the influence of beetle severity on the burn severity of subsequent wildfires in the decades after the outbreak. Although many factors contribute to burn severity, my results indicate that beetle severity can positively influence burn severity of wildfire. This is likely due to the change in forest structure in the decades after the outbreak and not as a direct result of tree mortality from the outbreak. The long-term perspective of this study suggests that ecological legacies of high severity disturbance may continue to influence subsequent disturbance for many years after the initial event. This work also provides insight on future disturbance interactions associated with the recent mountain pine beetle outbreak that has impacted tens of millions of hectares in western North America over the last two decades.
Ludwig, Sarah. "Fire severity effects on nutrient dynamics and microbial activities in a Siberian larch forest". Thesis, University of Alaska Fairbanks, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10146125.
Testo completoHigh-latitude ecosystems store large amounts of carbon in soil organic matter and are among the most vulnerable to climate change. In particular, fire severity and frequency are increasing in boreal ecosystems, and these events are likely to have direct and indirect effects on climate feedbacks via increased emission of carbon (C) from soil and changes in vegetation composition, respectively. In this study we created experimental burns of three severities in the northeastern Siberian arctic, near Cherskiy, RU, and quantified dissolved C, nitrogen (N), and phosphorus (P), and microbial respiration and extracellular enzyme activities at 1-day, 8-days, and 1-year post-fire.
Our objective was to determine how fire affects C, N, and P pools, soil microbial processes, and how these effects scale across severity and time since fire. We found labile C and nutrients increased immediately post-fire, but appeared similar to unburned controls within a week. Phosphorus alone remained elevated through 1-year post-fire. Leucine aminopeptidase activities initially increased with fire severity, but by 1-year, activities decreased with fire severity at a rate an order of magnitude faster. Fire severity suppressed phosphatase and ?-glucosidase activities at all time points. Soil respiration was reduced by half in high severity plots 1-year post-fire, while net rates of N mineralization increased by an order of magnitude. We found that changes in soil C and nutrient pools, soil respiration, and net N mineralization rates responded in a threshold-fashion to fire severity, although P was uncoupled from C and N by changing at a distinct severity threshold. Extracellular enzyme activities and edaphic variables scaled linearly with fire severity. The interaction of threshold and linear response curves to fire severity may help explain the variability across studies in soil microbial community responses to fire. Microbial communities recovering from more severe fires have the possibility to decrease future ecosystem C losses through reduced respiration. The changing fire regime in permafrost ecosystems has the potential to alter soil microbial community dynamics, the retention of nutrients, and the stoichiometry of C, N, and P availability.
Bale, Adam M. Guyette Richard P. "Fire effects and litter accumulation dynamics in a montane longleaf pine ecosystem". Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6553.
Testo completoTaylor, Alan H., Valerie Trouet, Carl N. Skinner e Scott Stephens. "Socioecological transitions trigger fire regime shifts and modulate fire–climate interactions in the Sierra Nevada, USA, 1600–2015 CE". NATL ACAD SCIENCES, 2016. http://hdl.handle.net/10150/622527.
Testo completoBlack, Kathleen Miles. "Red fox ecology and interactions with piping plovers on Fire Island, New York". Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/102663.
Testo completoDoctor of Philosophy
Red foxes have been identified as a key predator of the piping plover, a small migratory shorebird that breeds along the U.S. Atlantic coast and is considered 'threatened' (at risk of becoming endangered and eventually disappearing) within the United States. The lack of information about red fox ecology in coastal settings has been a challenge for wildlife biologists tasked with reducing predation on piping plovers. We investigated red fox ecology, behavior, and interactions with piping plovers on Fire Island, New York. We used trail cameras, collected scat (feces), monitored dens, and tracked red foxes on the island with global positioning system (GPS) collars in 2015–2018. We used these data to estimate red fox distribution, litter sizes, survival rates, and population sizes. We used GPS data to estimate red fox territory sizes, describe habitat selection, and investigate responses to piping plover nest exclosure setup, pipping (a period before hatching during which chicks vocalize inside the eggs), and hatching. We dissected red fox scats and recorded prey items found outside of dens to determine what red foxes on the island were eating. The proportion of each study area used by red foxes remained high even after substantial decreases in abundance, population density, annual reproduction, and seasonal survival following 2 parasitic disease (sarcoptic mange) outbreaks. Within their territories, red foxes selected areas that were closer to vegetation during the daytime and twilight hours but farther from vegetation at night. We did not find clear evidence that red foxes in our study area keyed in on piping plover nest exclosure setup, pipping, or hatching, although fox penetration of and digging at exclosures was an issue in some years at a site not included in those comparisons. Rodents, beetles, and crustacean remains were found most frequently in red fox scats. Skates and surf clams were found most frequently outside of dens. We did not find any identifiable piping plover remains in red fox scats or outside of dens. Our results suggest that that direct interactions between red foxes and piping plovers may be less frequent than previously believed, but concurrent work by collaborators documented that the trap success of red foxes was negatively related to piping plover reproductive output during our study period. Lethal removal of red foxes is unlikely to eliminate red foxes from shorebird nesting areas unless all foxes on the island are removed. We recommend strategic vegetation removal in and around piping plover nesting areas to reduce daytime resting spots and hunting cover for red foxes, and continued use of nest exclosures. We also recommend further investigation into indirect impacts of red foxes on piping plover populations, and into the possibility that anthropogenic food resources could be subsidizing the island's red fox population.
Dittler, Matthew Jason. "Ecology of Root-Feeding Insect Assemblages in Fire-Manipulated Longleaf Pine-Wiregrass Ecosystems". Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/50858.
Testo completoPh. D.
Weigel, Timothy J. "Assessing post-fire reseeding potential using Bureau of Land Management criteria in northeastern Nevada a spatial modeling approach /". abstract and full text PDF (free order & download UNR users only), 2007. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1446450.
Testo completo