Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes

Forest management practices have remarkably intensified over the past century in Finland. The predominant management practice is clearcutting followed by tree planting, which results in homogeneous and younger forest habitats. These local modifications affect biodiversity negatively as crucial res...

Full description

Bibliographic Details
Main Author: Rönttinen, Jenna
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Bio- ja ympäristötieteiden laitos, Department of Biological and Environmental Science, Jyväskylän yliopisto, University of Jyväskylä
Format: Master's thesis
Language:eng
Published: 2025
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/101643
_version_ 1833407614039359488
author Rönttinen, Jenna
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Bio- ja ympäristötieteiden laitos Department of Biological and Environmental Science Jyväskylän yliopisto University of Jyväskylä
author_facet Rönttinen, Jenna Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Bio- ja ympäristötieteiden laitos Department of Biological and Environmental Science Jyväskylän yliopisto University of Jyväskylä Rönttinen, Jenna Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Bio- ja ympäristötieteiden laitos Department of Biological and Environmental Science Jyväskylän yliopisto University of Jyväskylä
author_sort Rönttinen, Jenna
datasource_str_mv jyx
description Forest management practices have remarkably intensified over the past century in Finland. The predominant management practice is clearcutting followed by tree planting, which results in homogeneous and younger forest habitats. These local modifications affect biodiversity negatively as crucial resources are being removed. However, the landscape-level and long-term impacts of clearcutting are still unclear because large-scale time series data are scarce. This thesis investigated how the accumulation of clearcutting over time and space, and their average size affects different bird communities, whether open-habitat species benefit from clearcutting and for how long, and if there is a threshold defining a maximum viable clearcut area in a landscape. Using data from the Finnish bird monitoring transects and the European disturbance map describing clearcuts, the effects of clearcut accumulation were inferred over different spatial and temporal scales on species richness and abundance of different bird functional groups within forested landscapes of Southern Finland. The impacts were estimated using generalized linear mixed models (GLMM) and regression trees. Habitat heterogeneity positively affects overall bird species richness, especially through smaller clearcuts (edge habitats). Clearcuts affect forest birds negatively and especially old-growth forest species experience negative effects from the 20-year accumulation of clearcuts, with threshold level at 20% area of a landscape for them. Open habitat birds respond positively to clearcuts at 20-year time scales, therefore still benefitting from clearcut at longer time period. Additionally, species group responses vary in different spatial and temporal scales. Some birds benefit from short-term and localized effects, but large and long-term effects and excessive forest cover can negatively impact others. Observed threshold level and the average proportion of clearcuts imply unsustainability of current forest management practices in Finland.
first_indexed 2025-04-28T20:00:40Z
format Pro gradu
fullrecord [{"key": "dc.contributor.advisor", "value": "Duflot, R\u00e9mi", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Cours, J\u00e9r\u00e9my", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "R\u00f6nttinen, Jenna", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2025-04-28T05:38:45Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2025-04-28T05:38:45Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2025", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/101643", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Forest management practices have remarkably intensified over the past century in Finland. The predominant management practice is clearcutting followed by tree planting, which results in homogeneous and younger forest habitats. These local modifications affect biodiversity negatively as crucial resources are being removed. However, the landscape-level and long-term impacts of clearcutting are still unclear because large-scale time series data are scarce. This thesis investigated how the accumulation of clearcutting over time and space, and their average size affects different bird communities, whether open-habitat species benefit from clearcutting and for how long, and if there is a threshold defining a maximum viable clearcut area in a landscape. Using data from the Finnish bird monitoring transects and the European disturbance map describing clearcuts, the effects of clearcut accumulation were inferred over different spatial and temporal scales on species richness and abundance of different bird functional groups within forested landscapes of Southern Finland. The impacts were estimated using generalized linear mixed models (GLMM) and regression trees. Habitat heterogeneity positively affects overall bird species richness, especially through smaller clearcuts (edge habitats). Clearcuts affect forest birds negatively and especially old-growth forest species experience negative effects from the 20-year accumulation of clearcuts, with threshold level at 20% area of a landscape for them. Open habitat birds respond positively to clearcuts at 20-year time scales, therefore still benefitting from clearcut at longer time period. Additionally, species group responses vary in different spatial and temporal scales. Some birds benefit from short-term and localized effects, but large and long-term effects and excessive forest cover can negatively impact others. Observed threshold level and the average proportion of clearcuts imply unsustainability of current forest management practices in Finland.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2025-04-28T05:38:45Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2025-04-28T05:38:45Z (GMT). No. of bitstreams: 0\n Previous issue date: 2025", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "36", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "conservation", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "forest birds", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "forest disturbances", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "long-term monitoring", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "open habitat birds", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202504283503", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Bio- ja ymp\u00e4rist\u00f6tieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Biological and Environmental Science", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": null, "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": null, "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ekologia ja evoluutiobiologia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Ecology and evolutionary biology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.copyright", "value": "\u00a9 The Author(s)", "language": "fi", "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "restrictedAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4nk\u00e4sittely", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "maisemaekologia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mets\u00e4talous", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "linnut", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "biodiversiteetti", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "avohakkuut", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "Tekij\u00e4 ei ole antanut lupaa avoimeen julkaisuun, joten aineisto on luettavissa vain Jyv\u00e4skyl\u00e4n yliopiston kirjaston arkistoty\u00f6semalta. Ks. https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat#autotoc-item-autotoc-2", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "The author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyv\u00e4skyl\u00e4 University Library (https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat#autotoc-item-autotoc-2.", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "unknown accessibility", "language": "en", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}, {"key": "dc.description.accessibilityfeature", "value": "ei tietoa saavutettavuudesta", "language": "fi", "element": "description", "qualifier": "accessibilityfeature", "schema": "dc"}]
id jyx.123456789_101643
language eng
last_indexed 2025-05-21T20:06:44Z
main_date 2025-01-01T00:00:00Z
main_date_str 2025
publishDate 2025
record_format qdc
source_str_mv jyx
spellingShingle Rönttinen, Jenna Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes conservation forest birds forest disturbances long-term monitoring open habitat birds Ekologia ja evoluutiobiologia Ecology and evolutionary biology metsänkäsittely maisemaekologia metsätalous linnut biodiversiteetti avohakkuut
title Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes
title_full Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes
title_fullStr Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes
title_full_unstemmed Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes
title_short Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes
title_sort long term effects of clearcuts on bird communities in southern finnish forest landscapes
title_txtP Long-term effects of clearcuts on bird communities in southern Finnish forest landscapes
topic conservation forest birds forest disturbances long-term monitoring open habitat birds Ekologia ja evoluutiobiologia Ecology and evolutionary biology metsänkäsittely maisemaekologia metsätalous linnut biodiversiteetti avohakkuut
topic_facet Ecology and evolutionary biology Ekologia ja evoluutiobiologia avohakkuut biodiversiteetti conservation forest birds forest disturbances linnut long-term monitoring maisemaekologia metsänkäsittely metsätalous open habitat birds
url https://jyx.jyu.fi/handle/123456789/101643 http://www.urn.fi/URN:NBN:fi:jyu-202504283503
work_keys_str_mv AT rönttinenjenna longtermeffectsofclearcutsonbirdcommunitiesinsouthernfinnishforestlandscapes