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Ecological stoichio...
Ecological stoichiometry and nutrient partitioning in two insect herbivores responsible for large-scale forest disturbance in the Fennoscandian subarctic
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- Metcalfe, Daniel B. (author)
- Umeå universitet,Umeå University,Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science,Institutionen för ekologi, miljö och geovetenskap,Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden
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- Cherif, Mehdi (author)
- Umeå universitet,Umeå University,Institutionen för ekologi, miljö och geovetenskap,Arcum
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- Jepsen, Jane U. (author)
- Norwegian Institute for Nature Research
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- Vindstad, Ole Petter L. (author)
- UiT The Arctic University of Norway, Tromsø
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- Kristensen, Jeppe (author)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science
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- Belsing, Ulrika (author)
- Lund University
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(creator_code:org_t)
- 2018-10-04
- 2019
- English 11 s.
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In: Ecological Entomology. - : Wiley. - 0307-6946 .- 1365-2311. ; 44:1, s. 118-128
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Abstract
Subject headings
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- 1. Outbreaks of herbivorous insects can have large impacts on regional soil carbon (C) storage and nutrient cycling. In northernmost Europe, population outbreaks of several geometrid moth species regularly cause large-scale defoliation in subarctic birch forests. An improved understanding is required of how leaf C and nutrients are processed after ingestion by herbivores and what this means for the quantity and quality of different materials produced (frass, bodies). 2. In this study, larvae of two geometrid species responsible for major outbreaks (Epirrita autumnata and Operophtera brumata) were raised on exclusive diets of Betula pubescens var. czerepanovii (N. I. Orlova) Hämet Ahti and two other abundant understorey species (Betula nana, Vaccinium myrtillus). The quantities of C, nitrogen (N) and phosphorus (P) ingested and allocated to frass, bodies and (in the case of C) respired were recorded. 3. Overall, 23%, 70% and 48% of ingested C, N and P were allocated to bodies, respectively, rather than frass and (in the case of C) respiration. Operophtera brumata consistently maintained more constant body stoichiometric ratios of C, N and P than did E. autumnata, across the wide variation in physico-chemical properties of plant diet supplied. 4. These observed differences and similarities on C and nutrient processing may improve researchers' ability to predict the amount and stoichiometry of frass and bodies generated after geometrid outbreaks.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
Keyword
- Consumer-driven nutrient recycling
- ecological stoichiometry
- geometrid moth
- homeostasis
- stable isotope
- subarctic birch forest
- Consumer-driven nutrient recycling
Publication and Content Type
- art (subject category)
- ref (subject category)
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