Advanced

Resource economy of carnivorous plants: Interactions between prey capture and plant performance in three subarctic Pinguicula species

Thorén, Magnus LU (1998)
Abstract (Swedish)
Popular Abstract in Swedish

I min avhandling har jag studerat resursekonomin hos tre köttätande växter i fjällen. Arterna var vanlig tätört (Pinguicula vulgaris), fjälltätört (P. alpina) och dvärgtätört (P. villosa). Alla försöken var utförda i fält. Bytesfångsten varierade mellan individuella plantor, år och arter. Ynga blad fångade mer byten än gamla. Vanlig tätört fångade fler byten än de andra arterna och blommande plantor av vanlig tätört fångade fler byten än icke-blommande. Gödsling av jorden gav ingen respons. När vi matade plantorna med extra byten så ökade tillväxten, reproduktionen och överlevnaden. Alla arterna hade en reproduktionskostnad i form av minskad tillväxt, men investeringen i reproduktion var högre än... (More)
Popular Abstract in Swedish

I min avhandling har jag studerat resursekonomin hos tre köttätande växter i fjällen. Arterna var vanlig tätört (Pinguicula vulgaris), fjälltätört (P. alpina) och dvärgtätört (P. villosa). Alla försöken var utförda i fält. Bytesfångsten varierade mellan individuella plantor, år och arter. Ynga blad fångade mer byten än gamla. Vanlig tätört fångade fler byten än de andra arterna och blommande plantor av vanlig tätört fångade fler byten än icke-blommande. Gödsling av jorden gav ingen respons. När vi matade plantorna med extra byten så ökade tillväxten, reproduktionen och överlevnaden. Alla arterna hade en reproduktionskostnad i form av minskad tillväxt, men investeringen i reproduktion var högre än den påföljande kostnaden. Plantor på högre altitud påverkades mindre av matningen och investering i reproduktion. Fjälltätörten påverkades mindre av defoliering, matning och reproduktiv investering jämfört med de andra arterna. Fjälltätörten använder lagrade resurser till reproduktionen (”capital breeder”) medans vanlig tätört och dvärgtätört mer använder resurser anförskaffade innevarande år till reproduktionen (”income breeder”). (Less)
Abstract
In this thesis, I have studied in situ the resource economy of the three carnivorous plant species Pinguicula alpina, P. villosa and P. vulgaris in a subarctic environment. The prey capture varied among individual plants, years and species. It was higher in young leaves then in old ones. P. vulgaris captured more prey that the other species and reproductive individuals of P. vulgaris captured more than non-reproductive ones. There was no response to increased fertiliser to the soil. When these plants were supplied with supplementary prey they responded by increased growth, reproduction and survival. All species experienced a cost of reproduction in terms of decreased growth. For all species the reproductive effort was larger than the cost... (More)
In this thesis, I have studied in situ the resource economy of the three carnivorous plant species Pinguicula alpina, P. villosa and P. vulgaris in a subarctic environment. The prey capture varied among individual plants, years and species. It was higher in young leaves then in old ones. P. vulgaris captured more prey that the other species and reproductive individuals of P. vulgaris captured more than non-reproductive ones. There was no response to increased fertiliser to the soil. When these plants were supplied with supplementary prey they responded by increased growth, reproduction and survival. All species experienced a cost of reproduction in terms of decreased growth. For all species the reproductive effort was larger than the cost of reproduction. High altitude plants were less affected by supplementary feeding and previous reproduction. P. alpina was less affected by defoliation and previous reproduction and responded less to supplementary feeding than P. vulgaris and P. villosa. P. alpina showed characteristics typical of capital breeder whereas P. vulgaris and P. villosa behaved like income-breeders. (Less)
Please use this url to cite or link to this publication:
author
opponent
  • Dr Zamora, Regino, Dpto. Biología Animal y Ecología, Universidad de Granada, ES-18071-Granada, Spain
organization
publishing date
type
Thesis
publication status
published
subject
keywords
Plant ecology, income breeder, capital breeder, supplementary feeding, reproductive effort, life-history, cost of reproduction, Växtekologi
pages
115 pages
publisher
Plant Ecology, Ecology Building, SE-223 62 Lund
defense location
Blå Hallen, Ecology Building,SE-223 62 Lund, Sweden
defense date
1998-04-24 10:00
external identifiers
  • Other:ISRN: SE-LUNDBDS/NBBE-98/1047+115pp
ISBN
ISBN 91-7105-099-X
language
English
LU publication?
yes
id
1e992abb-236e-48fe-8981-b8adb2f0fdb1 (old id 38613)
date added to LUP
2007-08-01 09:37:53
date last changed
2016-09-19 08:45:07
@misc{1e992abb-236e-48fe-8981-b8adb2f0fdb1,
  abstract     = {In this thesis, I have studied in situ the resource economy of the three carnivorous plant species Pinguicula alpina, P. villosa and P. vulgaris in a subarctic environment. The prey capture varied among individual plants, years and species. It was higher in young leaves then in old ones. P. vulgaris captured more prey that the other species and reproductive individuals of P. vulgaris captured more than non-reproductive ones. There was no response to increased fertiliser to the soil. When these plants were supplied with supplementary prey they responded by increased growth, reproduction and survival. All species experienced a cost of reproduction in terms of decreased growth. For all species the reproductive effort was larger than the cost of reproduction. High altitude plants were less affected by supplementary feeding and previous reproduction. P. alpina was less affected by defoliation and previous reproduction and responded less to supplementary feeding than P. vulgaris and P. villosa. P. alpina showed characteristics typical of capital breeder whereas P. vulgaris and P. villosa behaved like income-breeders.},
  author       = {Thorén, Magnus},
  isbn         = {ISBN 91-7105-099-X},
  keyword      = {Plant ecology,income breeder,capital breeder,supplementary feeding,reproductive effort,life-history,cost of reproduction,Växtekologi},
  language     = {eng},
  pages        = {115},
  publisher    = {ARRAY(0xc7c62b8)},
  title        = {Resource economy of carnivorous plants: Interactions between prey capture and plant performance in three subarctic Pinguicula species},
  year         = {1998},
}