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

Research output: ThesisDoctoral Thesis (compilation)


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.


  • Magnus Thorén
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Ecology


  • Plant ecology, income breeder, capital breeder, supplementary feeding, reproductive effort, life-history, cost of reproduction, Växtekologi
Original languageEnglish
Awarding Institution
Supervisors/Assistant supervisor
  • [unknown], [unknown], Supervisor, External person
Award date1998 Apr 24
  • Plant Ecology, Ecology Building, SE-223 62 Lund
Print ISBNsISBN 91-7105-099-X
Publication statusPublished - 1998
Publication categoryResearch

Bibliographic note

Defence details Date: 1998-04-24 Time: 10:00 Place: Blå Hallen, Ecology Building,SE-223 62 Lund, Sweden External reviewer(s) Name: Zamora, Regino Title: Dr Affiliation: Dpto. Biología Animal y Ecología, Universidad de Granada, ES-18071-Granada, Spain --- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Plant Ecology and Systematics (Closed 2011) (011004000)