Digitala Vetenskapliga Arkivet

Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Decay Dynamics: Exploring Epixylic Bryophyte Succession and their response to Log Decay in Central Sweden
Stockholm University, Faculty of Science, Department of Physical Geography.
2024 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This study investigates the occurrence of niche separation and succession among epixylic bryophytes based on their preferred log decay states on fallen Pinus sylvestris trees in central Sweden. To achieve this, I collected 39 sample quadrats from 16 logs, measuring the total coverage of each bryophyte species and assessing the logs' decay state using visual grades and wood softness.  The data was analysed to determine if there was a pattern of succession, and it was found that bryophyte cover was not random across the stages of decay. Bryophyte cover increased linearly with increasing log decay, and species richness increased with log decay but dropped off in the final stage. Through simple linear regression analysis, five of the nine species identified showed significant positive relationships between coverage and decay state. One species, Ptilidium pulcherrimum, exhibited a non-linear relationship with log decay when evaluated using a general additive model. This data indicates that some species prefer different stages of decay, effectively demonstrating niche differentiation.

Abstract [sv]

Denna studie undersöker förekomsten av nischseparation och succession bland epixyliska bryofyter baserat på deras föredragna nedbrytningsstadier hos fallna tallar (Pinus sylvestris) i centrala Sverige. För att uppnå detta samlade jag 39 provrutor från 16 stockar, mätte den totala täckningen av varje bryofyt och bedömde stockarnas nedbrytningsstadium genom visuella bedömningar och träets mjukhet. Data analyserades för att avgöra om det fanns ett mönster av succession, och det visade sig att bryofyttäckningen inte var slumpmässig över nedbrytningsstadierna. Bryofyttäckningen ökade linjärt med ökande nedbrytningsgrad och artrikedomen ökade med nedbrytningsgrad men minskade i det sista stadiet. Av de nio identifierade arterna visade fem signifikanta positiva samband mellan täckning och nedbrytningsstadium genom enkel linjär regressionsanalys. En art, Ptilidium pulcherrimum, visade ett ickelinjärt samband med stocknedbrytning när det utvärderades med hjälp av en generell additiv modell. Dessa data indikerar att vissa arter föredrar olika nedbrytningsstadier, vilket effektivt visar nischdifferentiering.

Place, publisher, year, edition, pages
2024. , p. 12
Keywords [en]
Niche separation, niche differentiation, epixylic bryophyte, wood decay, succession, bryophyte decay preference, competitive exclusion principle, spruce bark beetle
Keywords [sv]
Nischseparation, nischdifferentiering, epixylisk bryofyt, nedbrytningsgrad, succession, nedbrytningspreferens, konkurrensuteslutningsprincipen, granbarkborren
National Category
Ecology Natural Sciences Biological Sciences Botany
Identifiers
URN: urn:nbn:se:su:diva-232483OAI: oai:DiVA.org:su-232483DiVA, id: diva2:1889942
Supervisors
Examiners
Available from: 2025-02-24 Created: 2024-08-16 Last updated: 2025-02-24Bibliographically approved

Open Access in DiVA

Decay Dynamics: Exploring Epixylic Bryophyte Succession and their response to Log Decay in Central Sweden(894 kB)50 downloads
File information
File name FULLTEXT01.pdfFile size 894 kBChecksum SHA-512
19d5776d49cd163fe66a44f07b67a57db90d8edc7df3cbee3af83f6418dacf510b1bf43bb389072b7d800f486a812131bd990fb6e3f7d6b7fc60980176a25884
Type fulltextMimetype application/pdf

By organisation
Department of Physical Geography
EcologyNatural SciencesBiological SciencesBotany

Search outside of DiVA

GoogleGoogle Scholar
Total: 50 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 223 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf