| Abstract: | The Upper Lake States region is marked by major disturbances of fire and logging over 100 years ago that created a landscape mosaic of early successional forests. Given the intimate link between soil N availability and forest growth in this region, it is important to understand how temporal changes in soil N constrain the rate at which forest biomass accumulates following a stand-destroying disturbance. Bigtooth aspen (Populus grandidentata Michx.) currently dominates sites where primarily old-growth pine-hemlock-oak forests once thrived, which provides an opportunity to observe nearly 100 years of succession following severe disturbance. In this study, we examine the relationship between soil N availability and biomass accrual in a series of plots undergoing secondary succession following logging and burning. Our results demonstrate that total aboveground biomass and nitrogen accrual patterns are strongly and positively related on a highly disturbed, bigtooth aspen-dominated ecosystem in northern Lower Michigan. Nitrogen mineralization and nitrification were highest immediately following disturbance, and then decreased over the next approximately 20 years of succession. Following this short-term decrease, these processes increased and attained a maximum value after 70 years of forest succession. Understory biomass accumulation showed the opposite trend of nutrient availability, with highest values during the first 20 years of succession, followed by a dramatic decrease for the next 70 years. Understory biomass began to decrease as plants grew into the overstory or died. Total aboveground biomass was correlated with N mineralization (r=0.894; P=0.041) and nitrification (r=0.782; P=0.118) and appears to be increasing steadily to some maximum that has not yet been reached. ?? 2003 Elsevier B.V. All rights reserved. |
| Genre: | Article |
| ProdID: | 70026828 |
| Citation Author: | White, L. L.; Zak, D. R.; Barnes, B. V. |
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| Citation End Page: | 127 |
| Citation Issue: | 1-3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Forest Ecology and Management |
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| Citation Number Of Pages: | 7 |
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| Citation Search Results Text: | Biomass accumulation and soil nitrogen availability in an 87-year-old Populus grandidentata chronosequence; 2004; Article; Journal; Forest Ecology and Management; White, L. L.; Zak, D. R.; Barnes, B. V. |
| Citation Start Page: | 121 |
| Citation Volume: | 191 |
| Citation Year: | 2004 |
| Type: | citation/reference |
| Text: | Biomass accumulation and soil nitrogen availability in an 87-year-old Populus grandidentata chronosequence; 2004; Article; Journal; Forest Ecology and Management; White, L. L.; Zak, D. R.; Barnes, B. V. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/j.foreco.2003.11.010 |
| Date Other: | Thu, 1 Jan 2004 00:00 -0600 |
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