Effects of long-term CO2 enrichment and nutrient availability in Norway spruce. I. Phenology and morphology of branches

The increased removal of forest-derived biomass with whole-tree harvesting (WTH) has raised concerns about the long-term productivity and sustainability of forest ecosystems. If true, this effect needs to be factored in the assessment of long-term feasibility to implement such a drastic forest management measure. Therefore, the economic performance of five experimental plantations in three different forest types, where in 1971 simulated WTH event occurred, was compared with pure, planted and conventionally managed (CH) Norway spruce stands of similar age and growing conditions. Potential incomes of CH and WTH stands were based on timber prices for period 2014–2020. However, regarding the economics of root and stump biomass utilization, they were not included in the estimates. In any given price level, the difference of internal rate of return between the forest types and selected managements were from 2.5% to 6.2%. Therefore, Norway spruce stands demonstrate good potential of independence regardless of stump removal at the previous rotation.

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Detecting trends in diameter growth of Norway spruce on long-term forest research plots using linear mixed-effects models

European Journal of Forest Research ◽

10.1007/s10342-014-0795-5 ◽

2014 ◽

Vol 133 (5) ◽

pp. 783-792 ◽

Cited By ~ 6

Author(s):

Chaofang Yue ◽

Hans-Peter Kahle ◽

Ulrich Kohnle ◽

Qing Zhang ◽

Xingang Kang

Keyword(s):

Norway Spruce ◽

Mixed Effects ◽

Mixed Effects Models ◽

Diameter Growth ◽

Forest Research ◽

Linear Mixed Effects Models ◽

Linear Mixed Effects

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Whole-tree thinnings in stands of Scots pine (Pinus sylvestris) and Norway spruce (Picea abies): Short- and long-term growth results

Forest Ecology and Management ◽

10.1016/j.foreco.2013.02.029 ◽

2013 ◽

Vol 298 ◽

pp. 52-61 ◽

Cited By ~ 11

Author(s):

Bjørn Tveite ◽

Kjersti Holt Hanssen

Keyword(s):

Picea Abies ◽

Pinus Sylvestris ◽

Norway Spruce ◽

Scots Pine ◽

Short And Long Term ◽

Whole Tree

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Calcareous nannoplankton ecology and community change across the Paleocene-Eocene Thermal Maximum

Paleobiology ◽

10.1666/12050 ◽

2013 ◽

Vol 39 (4) ◽

pp. 628-647 ◽

Cited By ~ 19

Author(s):

Leah J. Schneider ◽

Timothy J. Bralower ◽

Lee R. Kump ◽

Mark E. Patzkowsky

Keyword(s):

Nutrient Availability ◽

Multivariate Analyses ◽

Geochemical Modeling ◽

Community Change ◽

Open Ocean ◽

Data Set ◽

Long Term Effect ◽

Term Change ◽

Thermal Maximum

The Paleocene-Eocene Thermal Maximum (PETM; ca. 55.8 Ma) is thought to coincide with a profound but entirely transient change among nannoplankton communities throughout the ocean. Here we explore the ecology of nannoplankton during the PETM by using multivariate analyses of a global data set that is based upon the distribution of taxa in time and space. We use these results, coupled with stable isotope data and geochemical modeling, to reinterpret the ecology of key genera. The results of the multivariate analyses suggest that the community was perturbed significantly in coastal and high-latitudes sites compared to the open ocean, and the relative influence of temperature and nutrient availability on the assemblage varies regionally. The open ocean became more stratified and less productive during the PETM and the oligotrophic assemblage responded primarily to changes in nutrient availability. Alternatively, assemblages at the equator and in the Southern Ocean responded to temperature more than to nutrient reduction. In addition, the assemblage change at the PETM was not merely transient—there is evidence of adaptation and a long-term change in the nannoplankton community that persists after the PETM and results in the disappearance of a high-latitude assemblage. The long-term effect on communities caused by transient warming during the PETM has implications for modern-day climate change, suggesting similar permanent changes to nannoplankton community structure as the oceans warm.

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