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Regulation of Woody Plant Secondary Metabolism by Resource Availability: Hypothesis Testing by Means of Meta-Analysis
Our aim in this study was to determine how well phenotypic variation in foliar concentrations of carbon-based secondary compounds (CBSCs) in woody plants can be predicted on the basis of two… Expand
Causes of cyclicity of Epirrita autumnata (Lepidoptera, Geometridae): grandiose theory and tedious practice
- K. Ruohomäki, Miia Tanhuanpää, M. Ayres, P. Kaitaniemi, T. Tammaru, E. Haukioja
- Population Ecology
- 1 December 2000
Abstract Creating multiyear cycles in population density demands, in traditional models, causal factors that operate on local populations in a density-dependent way with time lags. However, cycles of… Expand
Insect performance on experimentally stressed woody plants: a meta-analysis.
In this review, we test the hypothesis that abiotic stress increases the suitability of plants as food for herbivores. We conducted a meta-analysis that included 70 experimental studies in which… Expand
Characterisation of hydrolysable tannins from leaves of Betula pubescens by high-performance liquid chromatography-mass spectrometry.
- Salminen J-P, V. Ossipov, J. Loponen, E. Haukioja, K. Pihlaja
- Chemistry, Medicine
- Journal of chromatography. A
- 24 December 1999
A high-performance liquid chromatography-electrospray ionisation mass spectrometry (HPLC-ESI-MS) method, assisted by diode array detection, for the characterisation of individual hydrolysable tannins… Expand
Induction of Defenses in Trees
- E. Haukioja
Analyse comparative des reactions des arbres feuillus, aux insectes. Evaluation des raisons impliquees dans les variations des reponses observees
On the role of plant defences in the fluctuation of herbivore populations.
- E. Haukioja
- 1 October 1980
The role of plant defences in creating cyclic and less regular fluctuations in herbivore density is evaluated on the basis of a case study concerning the birch Betula pubescens and the autumnal moth… Expand
Seasonal changes in birch leaf chemistry: are there trade-offs between leaf growth and accumulation of phenolics?
Several plant-herbivore hypotheses are based on the assumption that plants cannot simultaneously allocate resources to growth and defence. We studied seasonal patterns in allocation to growth and… Expand
Antioxidant responses to simulated acid rain and heavy metal deposition in birch seedlings.
- J. Koricheva, S. Roy, J. Vranjic, E. Haukioja, P. Hughes, O. Hänninen
- Chemistry, Medicine
- Environmental pollution
This study measured the responses of different anti-oxidants in 2-year-old birch (Betula pendula Roth) seedlings subjected to simulated acid rain (pH 4.0) and heavy metals (Cu/Ni), applied alone or… Expand
Tolerance to herbivory in woody vs. herbaceous plants
Research on plant tolerance to herbivory has been so far largely focussed on herbaceous plants partly due to the implicit assumption that woody plants are inherently lower in their compensatory… Expand
Foliar Phenolics are Differently Associated with Epirrita autumnata Growth and Immunocompetence
- Sanna Haviola, Lauri Kapari, V. Ossipov, M. J. Rantala, T. Ruuhola, E. Haukioja
- Biology, Medicine
- Journal of Chemical Ecology
- 6 April 2007
The quality of available food may affect insect herbivores directly (via growth and survivorship) and/or indirectly (by modifying insect vulnerability to parasitoids and pathogens). We examined the… Expand