Nutrient concentration of down woody debris in mixedwood forests in central Maine, USA
Both nutrient concentrations and pre- and post-harvest pool sizes were determined across down woody debris decay classes of several hardwood and softwood species in a long-term, natural disturbance based, silvicultural experiment in central Maine. Concentrations of N, P, Ca, Mg, Cu, Fe, and Zn g...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Finnish Society of Forest Science
2011-01-01
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| Series: | Silva Fennica |
| Online Access: | https://www.silvafennica.fi/article/112 |
| _version_ | 1818751539009814528 |
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| author | Saunders, Mike Fraver, Shawn Wagner, Robert |
| author_facet | Saunders, Mike Fraver, Shawn Wagner, Robert |
| author_sort | Saunders, Mike |
| collection | DOAJ |
| description | Both nutrient concentrations and pre- and post-harvest pool sizes were determined across down woody debris decay classes of several hardwood and softwood species in a long-term, natural disturbance based, silvicultural experiment in central Maine. Concentrations of N, P, Ca, Mg, Cu, Fe, and Zn generally increased 2- to 5-fold with increasing decay class. Concentrations of Mn, Al and B did not differ among decay classes, while K decreased by 20â44% from decay class 1 to class 4. C:N-ratios declined with increasing decay class, while N:P-ratios increased from decay class 1 to 2 and then plateaued with further decay. Within decay classes, softwoods generally had lower nutrient concentrations and higher C:N-ratios than hardwoods; N:P-ratios did not differ between hardwoods and softwoods. Although gap harvesting increased the size of the overall down woody debris nutrient pools, mostly through a large pulse of decay class 1 material, harvesting generally reduced the nutrients held in advanced decay classes. Pre-harvest down woody debris pools for N, P, K and Ca were 11.0, 0.6, 2.1 and 21.1 kg ha, respectively, while postharvest were 20.0, 1.3, 6.2 and 46.2 kg ha, respectively. While the gap-based silvicultural systems sampled in this study doubled the size of the pre-harvest, downed woody debris nutrient pools, the post-harvest pools were estimated to be only 3.2â9.1% of aboveground nutrients.â1â1 |
| first_indexed | 2024-12-18T04:37:10Z |
| format | Article |
| id | doaj.art-06c4ea3ee3424e72bce65fb0f24f4bbc |
| institution | Directory Open Access Journal |
| issn | 2242-4075 |
| language | English |
| last_indexed | 2024-12-18T04:37:10Z |
| publishDate | 2011-01-01 |
| publisher | Finnish Society of Forest Science |
| record_format | Article |
| series | Silva Fennica |
| spelling | doaj.art-06c4ea3ee3424e72bce65fb0f24f4bbc2022-12-21T21:20:50ZengFinnish Society of Forest ScienceSilva Fennica2242-40752011-01-0145210.14214/sf.112Nutrient concentration of down woody debris in mixedwood forests in central Maine, USASaunders, MikeFraver, ShawnWagner, RobertBoth nutrient concentrations and pre- and post-harvest pool sizes were determined across down woody debris decay classes of several hardwood and softwood species in a long-term, natural disturbance based, silvicultural experiment in central Maine. Concentrations of N, P, Ca, Mg, Cu, Fe, and Zn generally increased 2- to 5-fold with increasing decay class. Concentrations of Mn, Al and B did not differ among decay classes, while K decreased by 20â44% from decay class 1 to class 4. C:N-ratios declined with increasing decay class, while N:P-ratios increased from decay class 1 to 2 and then plateaued with further decay. Within decay classes, softwoods generally had lower nutrient concentrations and higher C:N-ratios than hardwoods; N:P-ratios did not differ between hardwoods and softwoods. Although gap harvesting increased the size of the overall down woody debris nutrient pools, mostly through a large pulse of decay class 1 material, harvesting generally reduced the nutrients held in advanced decay classes. Pre-harvest down woody debris pools for N, P, K and Ca were 11.0, 0.6, 2.1 and 21.1 kg ha, respectively, while postharvest were 20.0, 1.3, 6.2 and 46.2 kg ha, respectively. While the gap-based silvicultural systems sampled in this study doubled the size of the pre-harvest, downed woody debris nutrient pools, the post-harvest pools were estimated to be only 3.2â9.1% of aboveground nutrients.â1â1https://www.silvafennica.fi/article/112 |
| spellingShingle | Saunders, Mike Fraver, Shawn Wagner, Robert Nutrient concentration of down woody debris in mixedwood forests in central Maine, USA Silva Fennica |
| title | Nutrient concentration of down woody debris in mixedwood forests in central Maine, USA |
| title_full | Nutrient concentration of down woody debris in mixedwood forests in central Maine, USA |
| title_fullStr | Nutrient concentration of down woody debris in mixedwood forests in central Maine, USA |
| title_full_unstemmed | Nutrient concentration of down woody debris in mixedwood forests in central Maine, USA |
| title_short | Nutrient concentration of down woody debris in mixedwood forests in central Maine, USA |
| title_sort | nutrient concentration of down woody debris in mixedwood forests in central maine usa |
| url | https://www.silvafennica.fi/article/112 |
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