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21 results for “post-fire succession”
Post-fire succession in Delta Junction burns: Measurements of post-fire organic layer depth in 1987, 1990, 1994, and 1999 burns
This dataset contains soil organic layer depth measurements taken during summer 2008 in 4 burns located near Delta Junction (1987, 1994, 1999) and Tok (1990). These data can be found in Shenoy et al. 2011.
Post-fire succession in Delta Junction burns: Measurements of pre-fire stand basal area in 1987, 1990, 1994 and 1999 burns
This dataset contains measurements of pre-fire stand basal area taken during summer 2008 in 4 burns located near Delta Junction (1987, 1994, 1999) and Tok (1990). These data can be found in Shenoy et al. 2011.
Post-fire succession in Delta Junction burns: Measurements of aspen and spruce stem density and biomass in 1987, 1990, 1994 and 1999 burns
This dataset contains measurements of stem density and biomass of aspen and black spruce taken during summer 2008 in 4 burns located near Delta Junction (1987, 1994, 1999) and Tok (1990). These data can be found in Shenoy et al. 2011.
Post-fire succession in 1994 Hajdukovich Creek burn: Measurements of soil temperature
This dataset contains soil temperature measurements taken using a handheld temperature probe during July and August 2009 in the 1994 Hajdukovich Creek Burn. Meaurements were taken at 2 cm below the soil surface (organic layer) and at 15 cm below the soil surface (mineral layer).
Post-fire succession in 1994 Hajdukovich Creek burn: Measurements of soil moisture
This dataset contains soil moisture measurements taken using a handheld Campbell Scientific Hydrosense probe during July and August 2009 in the 1994 Hajdukovich Creek Burn. Meaurements were taken at 2 cm below the soil surface (organic layer) and at 15 cm below the soil surface (mineral layer).
Post-fire succession in 1994 Hajdukovich Creek burn: Measurements of soil Ph
This dataset contains soil pH measurements. Soil cores were collected in the field in July 2009 from the 1994 Hajdukovich Creek Burn and frozen until lab analysis.
Post-fire succession in 1994 Hajdukovich Creek burn: Measurements of soil organic layer depth
This dataset contains soil organic layer depth measurements collected in July 2009 from the 1994 Hajdukovich Creek Burn.
Post-fire succession in 1994 Hajdukovich Creek burn: Measurements of soil inorganic nitrogen supply (NO3- and NH4+)
This dataset contains soil NO3- and NH4+ supply measurements collected using PRS ion exchange probes. Measurements of inorganic N supply were collected separately in the organic and mineral soil layers. The probes were buried for two time periods (July - August, and August- September) in 2009.
Post-fire succession in 1994 Hajdukovich Creek burn: Measurements of aspen and black spruce stem density
This dataset contains measurements of stem density of aspen and black spruce taken during summer 2009 in the 1994 Hajdukovich Creek burn.
Post-fire succession in 1994 Hajdukovich Creek burn: Measurements of aspen and black spruce biomass
This dataset contains measurements of biomass of aspen and black spruce taken during summer 2009 in the 1994 Hajdukovich Creek burn.
Post-fire succession in 1994 Hajdukovich Creek Burn: in-situ measurements of aspen and spruce inorganic nitrogen uptake rates
This dataset contains in-situ measurements of inorganic nitrogen uptake rates in aspen and spruce saplings regenerating in one severely and one lightly burned site in the 1994 Hajdukovich Creek burn.
Post-fire succession in 1994 Hajdukovich Creek Burn: measurements of root biomass, shoot biomass, total plant C content, total plant N content for aspen and spruce
This dataset contains measurements of root biomass, shoot biomass, total plant C, and total plant N of 10 aspen and 10 spruce saplings harvested in one severely burned and one lightly burned site in the 1994 Hajdukovich Creek burn.
Post-fire succession in 1994 Hajdukovich Creek Burn: measurements of average basal area increment for the years 2000-2010 for aspen and spruce
This dataset contains measurements of average basal area increment from 2000-2010 in aspen and spruce individuals regenerating in the 1994 Hajdukovich Creek burn.
Data supporting: Success of post-fire plant recovery strategies varies with shifting fire seasonality
<p><span>Wildfires are increasing in size and severity and fire seasons are lengthening, largely driven by climate and land use change.</span> <span>Many plant species from fire prone ecosystems are adapted to specific fire regimes corresponding to historical conditions and shifts beyond these bounds may have severe impacts on vegetation recovery and long-term species persistence</span><span>. Here, we conduct a meta-analysis of field-based studies across different vegetation types and climate regions to investigate how post-fire plant recruitment, reproduction and survival are affected by fires that occur outside of the historical fire season. We find that fires outside of the historical fire season may lead to decreased post-fire recruitment for many species, particularly obligate seeding species. Conversely, we find a general increase of post-fire survival in resprouting species. </span><span>Our results highlight the trade-offs that exist when considering the effects of changes in the seasonal timing of fire, an already present aspect of climate-related global fire regime change. </span></p>
Data supporting: Success of post-fire plant recovery strategies varies with shifting fire seasonality
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Post-fire vegetation succession in the Siberian subarctic tundra over 45 years
<p>Wildfires are relatively rare in subarctic tundra ecosystems, but they can strongly change ecosystem properties. Short-term fire effects on subarctic tundra vegetation are well documented, but long-term vegetation recovery has been studied less. The frequency of tundra fires will increase with climate warming. Understanding the long-term effects of fire is necessary to predict future ecosystem changes. We used a space-for-time approach to assess vegetation recovery after fire over more than four decades. We studied soil and vegetation patterns on three large fire scars (>44, 28 and 12 years old) in dry, lichen-dominated forest tundra in Western Siberia. On 60 plots, we determined soil temperature and permafrost thaw depth, sampled vegetation and measured plant functional traits. We assessed trends in NDVI to support the field-based results on vegetation recovery.Soil temperature, permafrost thaw depth and total vegetation cover had recovered to pre-fire levels after >44 years, as well as total vegetation cover. In contrast, after >44 years, functional groups had not recovered to the pre-fire state. Burnt areas had lower lichen and higher bryophyte and shrub cover. The dominating shrub species, <i>Betula nana</i>, exhibited a higher vitality (higher specific leaf area and plant height) on burnt compared with control plots, suggesting a fire legacy effect in shrub growth. Our results confirm patterns of shrub encroachment after fire that were detected before in other parts of the Arctic and Subarctic. In the so far poorly studied Western Siberian forest tundra we demonstrate for the first time, long-term fire-legacies on the functional composition of relatively dry shrub- and lichen-dominated vegetation.</p>
Data from: Climate will increasingly determine post-fire tree regeneration success in low-elevation forests, Northern Rockies, USA
Climate change is expected to cause widespread shifts in the distribution and abundance of plant species through direct impacts on mortality, regeneration, and survival. At landscape scales, climate impacts will be strongly mediated by disturbances, such as wildfire, which catalyze shifts in species distributions through widespread mortality and by shaping the post‐disturbance environment. We examined the potential for regional shifts in low‐elevation tree species in response to wildfire and climate warming in low‐elevation, dry mixed‐conifer forests of the northern Rocky Mountains, USA. We analyzed interactions among climate and wildfire on post‐fire tree seedling regeneration 5–13 yr post‐fire at 177 sites burned in 21 large wildfires during two years with widespread regional burning. We used generalized additive mixed models to quantify how the density of Douglas‐fir and ponderosa pine seedlings varied as a function of climate normals (30‐yr mean temperature, precipitation, soil moisture, and evapotranspiration) and fire (tree survivorship, burn severity, and seed source availability). Mean summer temperature was the most important predictor of post‐fire seedling densities for both ponderosa pine and Douglas‐fir. Seed availability was also important in determining Douglas‐fir regeneration. As mean summer temperature continues to increase, however, seed availability will become less important for determining post‐fire regeneration. Above a mean summer temperature of 17°C, Douglas‐fir regeneration is predicted to be minimal regardless of how close a seed source is to a site. The majority (82%) of our sampled sites are predicted to exceed a mean summer temperature of 17°C by mid‐century, suggesting significant declines in seedling densities and potential forest loss. Our results highlight mechanisms linking climate change to shifts in the distribution of two widely dominant tree species in western North America. Under a warming climate, we expect post‐fire tree regeneration in these low‐elevation forests to become increasingly unsuccessful. Such widespread regeneration failures would have important implications for ecosystem processes and forest resilience, particularly as wildfires increase in response to climate warming.
Data from: Climate will increasingly determine post-fire tree regeneration success in low-elevation forests, Northern Rockies, USA
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Post-fire vegetation succession in the Siberian subarctic tundra over 45 years
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Effects of spatial distance and woody plant cover on beta diversity point to dispersal limitation as a driver of community assembly during post-fire succession in a Mediterranean shrubland
<p><span>Beta diversity, and its components of turnover and nestedness, reflect the processes governing community assembly, such as dispersal limitation or biotic interactions, but it is unclear how they operate at the local scale and how their role changes along post-fire succession. Here, we analyzed the patterns of beta diversity and its components in a herbaceous plant community after fire, and in relation to dispersal ability, in Central Spain. We calculated multiple site beta diversity (β<sub>SOR</sub>) and its components of turnover (βSIM) and nestedness (β<sub>SNE</sub>) of all herbaceous plants, or grouped by dispersal syndrome (autochory, anemochory, zoochory), during the first three years after wildfire. We evaluated the relationship between pairwise beta diversity (β<sub>sor</sub>), and its components (β<sub>sim</sub>, β<sub>sne</sub>), and spatial distance or differences in woody plant cover, a proxy of biotic interactions. We found high multiple-site beta diversity dominated by the turnover component. Community dissimilarity increased with spatial distance, driven mostly by the turnover component. Species with less dispersal ability (i. e. autochory) showed a stronger spatial pattern of dissimilarity. Biotic interactions with woody plants contributed less to community dissimilarity, which tended to occur through the nestedness component. These results suggest that dispersal limitation prevails over biotic interactions with woody plants as a driver of local community assembly, even for species with high dispersal ability. These results contribute to our understanding of post-fire community assembly and vegetation dynamics.</span></p>
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