Fire legacies in eastern ponderosa pine forests
Fire legacies in eastern ponderosa pine forests
复制标题
东部黄松林的火灾遗产
DOI:
10.1002/ece3.4879
复制
发表时间:
2019
影响因子:
2.6
通讯作者:
Twidwell, Dirac
中科院分区:
文献类型:
--
作者:
Roberts, Caleb P.;Donovan, Victoria M.;Wonkka, Carissa L.;Powell, Larkin A.;Allen, Craig R.;Angeler, David G.;Wedin, David A.;Twidwell, Dirac
Disturbance legacies structure communities and ecological memory, but due to increasing changes in disturbance regimes, it is becoming more difficult to characterize disturbance legacies or determine how long they persist. We sought to quantify the characteristics and persistence of material legacies (e.g., biotic residuals of disturbance) that arise from variation in fire severity in an eastern ponderosa pine forest in North America. We compared forest stand structure and understory woody plant and bird community composition and species richness across unburned, low‐, moderate‐, and high‐severity burn patches in a 27‐year‐old mixed‐severity wildfire that had received minimal post‐fire management. We identified distinct tree densities (high: 14.3 ± 7.4 trees per ha, moderate: 22.3 ± 12.6, low: 135.3 ± 57.1, unburned: 907.9 ± 246.2) and coarse woody debris cover (high: 8.5 ± 1.6% cover per 30 m transect, moderate: 4.3 ± 0.7, low: 2.3 ± 0.6, unburned: 1.0 ± 0.4) among burn severities. Understory woody plant communities differed between high‐severity patches, moderate‐ and low‐severity patches, and unburned patches (allp< 0.05). Bird communities differed between high‐ and moderate‐severity patches, low‐severity patches, and unburned patches (allp< 0.05). Bird species richness varied across burn severities: low‐severity patches had the highest (5.29 ± 1.44) and high‐severity patches had the lowest (2.87 ± 0.72). Understory woody plant richness was highest in unburned (5.93 ± 1.10) and high‐severity (5.07 ± 1.17) patches, and it was lower in moderate‐ (3.43 ± 1.17) and low‐severity (3.43 ± 1.06) patches. We show material fire legacies persisted decades after the mixed‐severity wildfire in eastern ponderosa forest, fostering distinct structures, communities, and species in burned versus unburned patches and across fire severities. At a patch scale, eastern and western ponderosa system responses to mixed‐severity fires were consistent.
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DOI:
--
发表时间:
2008
期刊:
Forestry sciences
影响因子:
--
作者:
T. Keyser;L. Lentile;F. Smith;W. Shepperd
通讯作者:
W. Shepperd
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
R. L. Hutto;C. Conway;V. Saab;J. Walters
通讯作者:
J. Walters
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
D. Huffman;A. S. Meador;M. Stoddard;Joseph E. Crouse;J. P. Roccaforte
通讯作者:
J. P. Roccaforte
影响因子:
5.2
作者:
A. Merschel;E. Heyerdahl;T. Spies;R. Loehman
通讯作者:
R. Loehman
DOI:
10.1674/0003-0031-181.1.1
发表时间:
2019
期刊:
The American Midland Naturalist
影响因子:
--
作者:
Keele, Emma C.;Donovan, Victoria M.;Roberts, Caleb P.;Nodskov, Sarah M.;Wonkka, Carissa L.;Allen, Craig R.;Powell, Larkin A.;Wedin, David A.;Angeler, David G.;Twidwell, Dirac
通讯作者:
Twidwell, Dirac