Limits...
Regional-scale land-cover change during the 20th century and its consequences for biodiversity.

Cousins SA, Auffret AG, Lindgren J, Tränk L - Ambio (2015)

Bottom Line: Extensive changes in land cover during the 20th century are known to have had detrimental effects on biodiversity in rural landscapes, but the magnitude of change and their ecological effects are not well known on regional scales.Semi-natural grassland cover decreased by over 96 % in the study area, being largely lost to afforestation and silviculture.An analysis of the landscape-level biodiversity revealed that plant species richness was generally more related to the modern landscape, with grazing management being a positive influence on species richness.

View Article: PubMed Central - PubMed

Affiliation: Biogeography and Geomatics, Department of Physical Geography, Stockholm University, 106 91, Stockholm, Sweden, sara.cousins@natgeo.su.se.

ABSTRACT
Extensive changes in land cover during the 20th century are known to have had detrimental effects on biodiversity in rural landscapes, but the magnitude of change and their ecological effects are not well known on regional scales. We digitized historical maps from the beginning of the 20th century over a 1652 km(2) study area in southeastern Sweden, comparing it to modern-day land cover with a focus on valuable habitat types. Semi-natural grassland cover decreased by over 96 % in the study area, being largely lost to afforestation and silviculture. Grasslands on finer soils were more likely to be converted into modern grassland or arable fields. However, in addition to remaining semi-natural grassland, today's valuable deciduous forest and wetland habitats were mostly grazed grassland in 1900. An analysis of the landscape-level biodiversity revealed that plant species richness was generally more related to the modern landscape, with grazing management being a positive influence on species richness.

No MeSH data available.


Broad land cover in 1900 for the present-day (2013) distributions of deciduous forest and wetland over a 1652 km2 study area in southeastern Sweden
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Fig6: Broad land cover in 1900 for the present-day (2013) distributions of deciduous forest and wetland over a 1652 km2 study area in southeastern Sweden

Mentions: The areas of present-day valuable wetlands and deciduous forest within the study area were to a large extent, 50 and 70 % respectively, managed as semi-natural grassland in 1900 (Fig. 6). The present-day wetlands were used as meadows in the past and the deciduous forests for grazing. Around 30% of both habitat types were either forest or managed as arable field in the past, while many wetland areas were mapped as open water a century ago (for example the lake in Fig. 2).Fig. 6


Regional-scale land-cover change during the 20th century and its consequences for biodiversity.

Cousins SA, Auffret AG, Lindgren J, Tränk L - Ambio (2015)

Broad land cover in 1900 for the present-day (2013) distributions of deciduous forest and wetland over a 1652 km2 study area in southeastern Sweden
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4288995&req=5

Fig6: Broad land cover in 1900 for the present-day (2013) distributions of deciduous forest and wetland over a 1652 km2 study area in southeastern Sweden
Mentions: The areas of present-day valuable wetlands and deciduous forest within the study area were to a large extent, 50 and 70 % respectively, managed as semi-natural grassland in 1900 (Fig. 6). The present-day wetlands were used as meadows in the past and the deciduous forests for grazing. Around 30% of both habitat types were either forest or managed as arable field in the past, while many wetland areas were mapped as open water a century ago (for example the lake in Fig. 2).Fig. 6

Bottom Line: Extensive changes in land cover during the 20th century are known to have had detrimental effects on biodiversity in rural landscapes, but the magnitude of change and their ecological effects are not well known on regional scales.Semi-natural grassland cover decreased by over 96 % in the study area, being largely lost to afforestation and silviculture.An analysis of the landscape-level biodiversity revealed that plant species richness was generally more related to the modern landscape, with grazing management being a positive influence on species richness.

View Article: PubMed Central - PubMed

Affiliation: Biogeography and Geomatics, Department of Physical Geography, Stockholm University, 106 91, Stockholm, Sweden, sara.cousins@natgeo.su.se.

ABSTRACT
Extensive changes in land cover during the 20th century are known to have had detrimental effects on biodiversity in rural landscapes, but the magnitude of change and their ecological effects are not well known on regional scales. We digitized historical maps from the beginning of the 20th century over a 1652 km(2) study area in southeastern Sweden, comparing it to modern-day land cover with a focus on valuable habitat types. Semi-natural grassland cover decreased by over 96 % in the study area, being largely lost to afforestation and silviculture. Grasslands on finer soils were more likely to be converted into modern grassland or arable fields. However, in addition to remaining semi-natural grassland, today's valuable deciduous forest and wetland habitats were mostly grazed grassland in 1900. An analysis of the landscape-level biodiversity revealed that plant species richness was generally more related to the modern landscape, with grazing management being a positive influence on species richness.

No MeSH data available.