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| DOI | 10.1016/j.foreco.2020.118691 |
| Oak growth and acorn production in southern Appalachian mature forests and shelterwood with reserves regeneration harvests | |
| Greenberg C.H. | |
| 发表日期 | 2021 |
| ISSN | 0378-1127 |
| 卷号 | 481 |
| 英文摘要 | Oaks (Quercus) are economically important, and their seed (acorns) are a valuable food for many animals. Thus, forest managers must consider potential tradeoffs between oak growth and acorn production. I used 13 years of dbh growth and 17 years of acorn trapping data on 195 trees of five common eastern oak species to compare stand-level growth and acorn production between closed canopy mature forest (M) and recent shelterwood with reserves regeneration harvests (SW) (BA 27.3 ± 1.7 m2/ha in M; 5.1 + 0.8 m2/ha in SW at study establishment). I also examined treatment differences in dbh growth, crown expansion, and acorns/m2 crown at the individual tree level, using a subset of paired (by species and dbh) trees. Despite five times more oak trees and oak BA in M, average annual total acorn production/ha was only double (58,199/ha in M) that in SW (27,298/ha), and was statistically greater in M than SW for total oaks and white oak. Stand- and paired individual tree-level analyses indicated that average acorns/m2 crown and dbh growth was approximately 70% greater in SW than M for total oaks. Crown area increases were greater in SW than M for total oak (66%) and northern red oak (74%), and crown areas in SW expanded disproportionately to increases in dbh alone. In mixed-oak southern Appalachian forests, silvicultural treatments retaining 20–40 mature oaks/ha with fully released crowns will likely yield 50–100% of acorns produced/ha in mature closed canopy stands, as acorn production by residual trees increases. Retention of multiple oak species will reduce the likelihood of stand-level crop failure, as acorn production differs among species and years. © 2020 |
| 英文关键词 | Acorn production; Crown expansion; Crown release; Oak diameter growth; Shelterwood harvest |
| 语种 | 英语 |
| scopus关键词 | Ecology; Forestry; Acorn production; Closed canopies; Forest managers; Individual tree; Mature forest; Northern red oaks; Regeneration harvest; Silvicultural treatments; Reforestation; deciduous forest; forest ecosystem; growth response; maturation; regeneration; seed; silviculture; stand structure; trapping; yield response; DBH; Ecology; Forestry; Growth; Production; Quercus Rubra; Reforestation; Trees; Appalachians; Animalia; Quercus; Quercus alba; Quercus rubra |
| 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/154809 |
| 作者单位 | USDA Forest Service, Southern Research Station, Bent Creek Experimental Forest, Upland Hardwood Ecology and Management Research Work Unit (RWU 4157), 1577 Brevard Road, Asheville, NC 28806, United States |
| 推荐引用方式 GB/T 7714 | Greenberg C.H.. Oak growth and acorn production in southern Appalachian mature forests and shelterwood with reserves regeneration harvests[J],2021,481. |
| APA | Greenberg C.H..(2021).Oak growth and acorn production in southern Appalachian mature forests and shelterwood with reserves regeneration harvests.Forest Ecology and Management,481. |
| MLA | Greenberg C.H.."Oak growth and acorn production in southern Appalachian mature forests and shelterwood with reserves regeneration harvests".Forest Ecology and Management 481(2021). |
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