气候变化领域集成服务门户(CCPortal): Do biological legacies moderate the effects of forest harvesting on soil microbial community composition and soil respiration

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DOI	10.1016/j.foreco.2018.09.020
	Do biological legacies moderate the effects of forest harvesting on soil microbial community composition and soil respiration
	Lewandowski T.E.; Forrester J.A.; Mladenoff D.J.; D'Amato A.W.; Fassnacht D.S.A.; Padley E.; Martin K.J.
发表日期	2019
ISSN	0378-1127
起始页码	298
结束页码	308
卷号	432
英文摘要	Ecological forestry is a management approach that uses natural disturbance processes as models for designing silvicultural prescriptions that restore or sustain ecosystem biodiversity and function in actively managed forests. We evaluated how a novel ecologically-based multi-cohort silvicultural treatment affects the soil microbial community (SMC) and tested whether supplemental dead wood in the form of girdled trees alters these effects. We also tested SMC function by measuring soil CO2 flux over multiple growing seasons, and examined if these patterns were related to soil microbial groups. Our experimental harvests were conducted in second-growth northern hardwood forests in northern Wisconsin, USA. Treatments included a modified shelterwood harvest (SH), a shelterwood harvest plus dead wood supplementation (SH + CWD), and an unharvested control; here we report responses three to five years post-treatment. The SMC composition (determined using PLFA) in both harvests was significantly different from the control, a difference driven by greater bacterial abundance in the harvested areas, and particularly by gram negative bacteria in SH. Microbial community composition was not significantly different between the two harvests (SH and SH + CWD). Total soil respiration was significantly lower in SH than in the control and SH + CWD treatments, a difference most likely driven by a reduction of the autotrophic respiration component in SH treatments due to harvesting, while in the SH + CWD treatment roots from living girdled trees contributed to autotrophic soil respiration. The relationship between the SMC and soil respiration varied with treatment and season. In general, soil respiration in the unharvested controls was most significantly correlated with microbes that relate to autotrophic respiration sources, while respiration in SH + CWD was most significantly correlated with heterotrophic microbes. These results indicate that, although the SMC composition was affected by forest harvesting practices incorporating live and dead biological legacies, supplementing the number of standing dead trees through girdling and felling maintained SMC function, as measured through total soil respiration, an indicator of some important aspects of ecosystem function. © 2018 Elsevier B.V.
英文关键词	Biological legacies; Ecological forestry; Northern hardwood forest; Shelterwood harvests; Soil microbial community; Soil respiration
语种	英语
scopus关键词	Bacteria; Biodiversity; Ecosystems; Hardwoods; Harvesting; Soils; Timber; Biological legacies; Northern hardwood forest; Shelterwood harvests; Soil microbial community; Soil respiration; Forestry; biodiversity; community composition; dead wood; forest management; forest soil; forestry; growing season; microbial community; silviculture; soil carbon; soil microorganism; soil respiration; timber harvesting; Bacteria; Biodiversity; Ecosystems; Forestry; Hardwoods; Harvesting; United States; Wisconsin; Bacteria (microorganisms); Negibacteria
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156382
作者单位	Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, WI 53706, United States; The Rubenstein School of Environmental and Natural Resources, University of Vermont, Burlington, VT 05405, United States; Bureau of Science Services, Wisconsin Department of Natural Resources, Madison, WI 53703, United States; Natural Resources Conservation Service, U.S. Department of Agriculture, Washington, DC 20250, United States; University of Wisconsin – Extension, Madison, WI 53706, United States; Bureau of Air Management, Wisconsin Department of Natural Resources, Madison, WI 53703, United States
推荐引用方式 GB/T 7714	Lewandowski T.E.,Forrester J.A.,Mladenoff D.J.,et al. Do biological legacies moderate the effects of forest harvesting on soil microbial community composition and soil respiration[J],2019,432.
APA	Lewandowski T.E..,Forrester J.A..,Mladenoff D.J..,D'Amato A.W..,Fassnacht D.S.A..,...&Martin K.J..(2019).Do biological legacies moderate the effects of forest harvesting on soil microbial community composition and soil respiration.Forest Ecology and Management,432.
MLA	Lewandowski T.E.,et al."Do biological legacies moderate the effects of forest harvesting on soil microbial community composition and soil respiration".Forest Ecology and Management 432(2019).