Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Ecologically viable population sizes: Determining factors
Linköpings universitet, Institutionen för fysik, kemi och biologi.
2010 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 40 poäng / 60 hpStudentuppsats (Examensarbete)
Abstract [en]

The minimum ecologically viable population size (MEVP) of a species describes the minimum size at which the species itself or another species in the same ecosystem goes extinct as a result of the loss of inter-specific interactions. The MEVP shows a good potential for use as a tool for exploring the mechanisms behind species extinctions, but presently only a small amount of research has been done that takes advantage of this. In this study the MEVP is used to investigate what properties of species can be used as good indicators of ecological importance. 100 large computer generated food webs were created with an assembly model and the reduction in density that was necessary to induce an extinction event in the web was subsequently determined for each species within the webs. This change in density was then correlated with 28 different properties, measured for each species. The results show that properties that measure how well connected a species is, as well as measures of the species role as a prey item in the web are the ones with the greatest potential to find species with high MEVP. Further, the results put emphasis on the importance of regarding the web as a whole when working with species extinctions, while also highlighting the usefulness of the MEVP concept.

Ort, förlag, år, upplaga, sidor
2010. , s. 22
Nyckelord [en]
assembly model, ecologically effective populations, extinction, keystone species, MEVP, MVP, species interactions
Nationell ämneskategori
Ekologi
Identifikatorer
URN: urn:nbn:se:liu:diva-56819ISRN: LITH-IFM-A-Ex--2354--ExOAI: oai:DiVA.org:liu-56819DiVA, id: diva2:322336
Uppsök
bio-/geovetenskap
Handledare
Examinatorer
Tillgänglig från: 2010-06-10 Skapad: 2010-06-04 Senast uppdaterad: 2010-06-10Bibliografiskt granskad

Open Access i DiVA

fulltext(529 kB)218 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 529 kBChecksumma SHA-512
72a14dd5b20e6afb82aa80abaf22715b3e92298de1e796d2f560a9a64ed4d2d5b7043145d8d3bbdf4f3bb5fb335b02c22ac80ffe41226460fd88f13a4814e02e
Typ fulltextMimetyp application/pdf

Sök vidare i DiVA

Av författaren/redaktören
Sellman, Stefan
Av organisationen
Institutionen för fysik, kemi och biologi
Ekologi

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 218 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 127 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf