Soil solution and extractable soil nitrogen response to climate change in two boreal forest ecosystems

Verburg, Paul

doi:10.1007/s00374-005-0831-1

Cited by 17 publications

(17 citation statements)

References 19 publications

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“…Resource allocation towards shoots in defoliated seedlings, or in seedlings under high nutrients and temperature supports the assumption that under these conditions assimilated carbon and light have become growth limiting factors (Tilman 1990). If global warming increases abundance of insect herbivores (Jepsen et al 2011), or nutrient availability by accelerating mineralization rates or enhancing atmospheric nitrogen deposition (Galloway et al 2004;Verburg 2005), the net effect in silver birch seedlings is to shift resource allocation toward shoot growth and away from root growth ( Fig. 4; Kleczewski et al 2012).…”

Section: Discussionmentioning

confidence: 76%

“…In fact, fertilization has enhanced the height and biomass growth of previously defoliated silver birch seedlings (Huttunen et al 2007). This is especially relevant because the broad impacts of global change frequently include increased atmospheric deposition of nitrogen (Galloway et al 2004) and accelerated mineralization rates of organic nitrogen in soil (Verburg 2005). On the other hand, defoliation may weaken the ability of roots to store resources as a result of increased carbon allocation to aboveground organs (Huttunen et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Interactive effects of defoliation and climate change on compensatory growth of silver birch seedlings

Huttunen¹,

Ayres²,

Niemelä³

et al. 2013

Silva Fenn.

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Interactive effects of defoliation and climate change on compensatory growth of silver birch seedlings Huttunen L., Ayres M.P., Niemelä P., Heiska S., Tegelberg R., Rousi M., Kellomäki S. (2013). Interactive effects of defoliation and climate change on compensatory growth of silver birch seedlings. Silva Fennica vol. 47 no. 3 article id 964. 14 p. Highlights• The main components affecting growth compensation in silver birch seedlings are the timing and severity of foliage damage.• The ability to compensate growth is also dependent upon the limits of temperature and nutrient availability.• The responses of birches imply that folivory does not necessarily lead to reduced net productivity under changing climate. AbstractAtmospheric warming increases the abundance of insect herbivores and intensifies the risk of defoliation, especially in high latitude forests. At the same time, the effects of increasing temperature and CO 2 on plant responses to foliage damage are poorly understood. We examined if previous-year defoliation, varying between 0 and 75% of total leaf area, and different combinations of elevated temperature, CO 2 and nutrient availability alter the growth of two-year old silver birch (Betula pendula Roth) seedlings. We measured the greatest height growth in seedlings that were fertilized and defoliated twice at the level of 50% of total leaf area, and subjected to elevated temperature with ambient CO 2 . The lowest growth was recorded in unfertilized seedlings that were defoliated twice at the level of 25% of total leaf area, and grew under ambient temperature with ambient CO 2 . The total biomass increased in all seedlings that were fertilized or grew under elevated temperature. The root: shoot ratios were low in defoliated seedlings, or seedlings subjected to fertilization or temperature elevation. Our conclusion is that ability of birches to compensate height growth is highly dependent upon the magnitude and frequency of defoliation on the limits of temperature and nutrient availability. These responses imply that folivory does not necessarily lead to reduced net productivity of trees under changing climate.

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Section: Discussionmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Interactive effects of defoliation and climate change on compensatory growth of silver birch seedlings

Huttunen¹,

Ayres²,

Niemelä³

et al. 2013

Silva Fenn.

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“…4 Carbon capture policy; product substitution; changes in decomposition rates Kurz et al, 1995;Apps et al, 1999;Pederson, 2004;Spittlehouse, 2005;Verburg, 2005;Canadell & Raupach, 2008;Hennigar et al, 2008;Neilson et al, 2008;MacLean et al, 2010 Unmodified 4 Forest ecosystem change; timber supply fluctuation Dale et al, 2001;Schimel et al, 2001;Perez-Garcia et al, 2002;Stennes et al, 2005;DeLong et al, 2007;Spetic, 2009 Unmodified 5.1.3. 11 Timber supply fluctuation; global trade fluctuations Sohngen & Mendelsohn, 1998;Irland et al, 2001;Perez-Garcia et al, 2002;Lee & Lyon, 2004;Browne & Hunt, 2007;Kirilenko & Sedjo, 2007;Williamson et al, 2008;Jonsson, 2009 Peng & Apps, 1999;Volney & Fleming, 2000;Dale et al, 2001;Schimel et al, 2001;Perez-Garcia et al, 2002;Barrow et al, 2004;Spittlehouse, 2005;Bernier, 2007;Kirilenko & Sedjo, 2007;McKenney et al, 2007;Aitken et al, 2008;Hogg et al, 2008;Iverson et al, 2008;Lindenmayer & Noss, 2008;Flannigan et al, 2009 Unmodified 5.3.2. 27 Forest ecosystem change; timber supply fluctuation Irland, 1998;…”

Section: Discussionmentioning

confidence: 99%

Criteria and Indicators of Sustainable Forest Management in a Changing Climate: An Evaluation of Canada’s National Framework

Steenberg

Duinker²,

Damme³

et al. 2012

JSD

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Sustainability is now woven throughout forest management and policy. Criteria and indicators (C&I) provide a means of defining the concepts of sustainability in the context of forest management and establishing goals to gauge progress. There have been no major research initiatives to determine the implications of climate change for C&I. We evaluated the 46 indicators of the 2003 Canadian Council of Forest Ministers framework. Indicators were evaluated for their relationships with climate, relationships with other indicators, robustness and utility under climate change, and future prospects, including abandonment, improvement, or continued use. An evaluation framework was developed to analyze indicator linkages, direct and indirect climate-change influence, and potential modifications. 12 indicators were considered unaffected by climate change. The remaining 34 indicators were considered to be influenced by climate change. No modification seemed warranted for 23 of these indicators, while modifications for the remaining 11 indicators were recommended. Six new indicators were identified for monitoring forests sustainably under climate change. The difference between action and state indicators had implications for the influence of climate change on indicator effectiveness. State indicators were more prone to declines in their tracking ability, while action indicators were often unaffected, or even improved under climate change, as measured by several key traits of indicator effectiveness. The most prevalent theme in the evaluations was a decline in indicator predictability. We suggest moving from predominantly retrospective analysis to a balance of retrospective and prospective analysis, given that monitoring is inherently backward-looking and the threats and uncertainties of climate change are impending.

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“…Singh [38] found that N availability decreased by 12%-44% when the soil water content decreased. N is considered the most common limiting nutrient [39], and N is likely to enhance growth for many forests sites [40], by accelerating the leaching of other essential nutrients such as calcium, magnesium, and potassium [41]. To date, experiments indicate that an increase in N increases C sequestration [42,43].…”

Section: Precipitation and Evapotranspirationmentioning

confidence: 99%

Biomass and carbon dynamics of a tropical mountain rain forest in China

Chen

et al. 2010

Sci. China Life Sci.

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Biometric inventories for 25 years, from 1983 to 2005, indicated that the Jianfengling tropical mountain rain forest in Hainan, China, was either a source or a modest sink of carbon. Overall, this forest was a small carbon sink with an accumulation rate of (0.56+/-0.22) Mg C ha(-1)yr(-1), integrated from the long-term measurement data of two plots (P9201 and P8302). These findings were similar to those for African and American rain forests ((0.62+/-0.23) Mg C ha(-1)yr(-1)). The carbon density varied between (201.43+/-29.38) Mg C ha(-1) and (229.16+/-39.2) Mg C ha(-1), and averaged (214.17+/-32.42) Mg C ha(-1) for plot P9201. Plot P8302, however, varied between (223.95+/-45.92) Mg C ha(-1) and (254.85+/-48.86) Mg C ha(-1), and averaged (243.35+/-47.64) Mg C ha(-1). Quadratic relationships were found between the strength of carbon sequestration and heavy rainstorms and dry months. Precipitation and evapotranspiration are two major factors controlling carbon sequestration in the tropical mountain rain forest.

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Soil solution and extractable soil nitrogen response to climate change in two boreal forest ecosystems

Cited by 17 publications

References 19 publications

Interactive effects of defoliation and climate change on compensatory growth of silver birch seedlings

Interactive effects of defoliation and climate change on compensatory growth of silver birch seedlings

Criteria and Indicators of Sustainable Forest Management in a Changing Climate: An Evaluation of Canada’s National Framework

Biomass and carbon dynamics of a tropical mountain rain forest in China

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