Ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in Nyby, northern Finland
We studied 45 mid-boreal wetlands in a rugged land uplift coast with a thin cover of till. Wetlands ranged from 1 to 53 m a.s.l. and were of highly various sizes. Our aims were to examine, if vegetation types are valid in comparing wetlands, what kind of ecological major pattern the vegetation type...
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Geographical Society of Finland
2016
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ftdoajarticles:oai:doaj.org/article:e8a4b3d94f9541ab9cfb08d16fae60d5 2023-05-15T17:42:50+02:00 Ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in Nyby, northern Finland Jarmo Laitinen Jari Oksanen Tuija Maliniemi Eero Kaakinen Kaisu Aapala Sakari Rehell 2016-02-01T00:00:00Z https://doi.org/10.11143/51315 https://doaj.org/article/e8a4b3d94f9541ab9cfb08d16fae60d5 EN eng Geographical Society of Finland http://ojs.tsv.fi/index.php/fennia/article/view/51315/17134 https://doaj.org/toc/1798-5617 doi:10.11143/51315 1798-5617 https://doaj.org/article/e8a4b3d94f9541ab9cfb08d16fae60d5 Fennia: International Journal of Geography, Vol 194, Iss 1, Pp 89-116 (2016) Geography (General) G1-922 article 2016 ftdoajarticles https://doi.org/10.11143/51315 2022-12-30T21:37:04Z We studied 45 mid-boreal wetlands in a rugged land uplift coast with a thin cover of till. Wetlands ranged from 1 to 53 m a.s.l. and were of highly various sizes. Our aims were to examine, if vegetation types are valid in comparing wetlands, what kind of ecological major pattern the vegetation type composition of wetlands shows and how vegetation types distribute across altitudes. On those ground we discuss the wetland succession of the study area. We used the Finnish mire site types as vegetation types. Mire site types could be used for an ecological classification and ordination of the wetlands. As was expected, the major gradient consisted of the transition from mire margin (swamp) to expanse. The distribution of the Major Vegetational Wetland Groups (MVWG) responded to a general water-flow pattern in the landscape. Partly different peatland succession sequences occur in areas with small mire basins and in areas with larger mire basins with evolving mire complexes. Sequences of small wetlands and those of mire complexes follow the same trajectory only as far as the major gradient is considered while they differ with regard to the vegetation type composition of locally rare vegetation types and with regard to peatland morphology. Trajectories of mire complexes at catchment divides differ from those at catchment centers where the waters in the landscape tend to gather. Peatland forms of aapa mires experience a change reaching altitudes of 30–50 m a.s.l. Small bog complexes at catchment divides reach a stage of an unpatterned Sphagnum fuscum bog in the study area. Mature mixed complexes with aapa-mire parts and patterned sloping-bog parts only occur at altitudes higher than 60 m a.s.l. Peculiarities in the succession of the wetlands of Nyby, which include the presence of separate incomplete successional sequences in the same area, are mainly caused by the peculiar topography with various sub-areas and with an abundance of rock outcrops. Article in Journal/Newspaper Northern Finland Directory of Open Access Journals: DOAJ Articles Nyby ENVELOPE(25.150,25.150,70.067,70.067) Fennia – International Journal of Geography |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Geography (General) G1-922 |
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Geography (General) G1-922 Jarmo Laitinen Jari Oksanen Tuija Maliniemi Eero Kaakinen Kaisu Aapala Sakari Rehell Ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in Nyby, northern Finland |
topic_facet |
Geography (General) G1-922 |
description |
We studied 45 mid-boreal wetlands in a rugged land uplift coast with a thin cover of till. Wetlands ranged from 1 to 53 m a.s.l. and were of highly various sizes. Our aims were to examine, if vegetation types are valid in comparing wetlands, what kind of ecological major pattern the vegetation type composition of wetlands shows and how vegetation types distribute across altitudes. On those ground we discuss the wetland succession of the study area. We used the Finnish mire site types as vegetation types. Mire site types could be used for an ecological classification and ordination of the wetlands. As was expected, the major gradient consisted of the transition from mire margin (swamp) to expanse. The distribution of the Major Vegetational Wetland Groups (MVWG) responded to a general water-flow pattern in the landscape. Partly different peatland succession sequences occur in areas with small mire basins and in areas with larger mire basins with evolving mire complexes. Sequences of small wetlands and those of mire complexes follow the same trajectory only as far as the major gradient is considered while they differ with regard to the vegetation type composition of locally rare vegetation types and with regard to peatland morphology. Trajectories of mire complexes at catchment divides differ from those at catchment centers where the waters in the landscape tend to gather. Peatland forms of aapa mires experience a change reaching altitudes of 30–50 m a.s.l. Small bog complexes at catchment divides reach a stage of an unpatterned Sphagnum fuscum bog in the study area. Mature mixed complexes with aapa-mire parts and patterned sloping-bog parts only occur at altitudes higher than 60 m a.s.l. Peculiarities in the succession of the wetlands of Nyby, which include the presence of separate incomplete successional sequences in the same area, are mainly caused by the peculiar topography with various sub-areas and with an abundance of rock outcrops. |
format |
Article in Journal/Newspaper |
author |
Jarmo Laitinen Jari Oksanen Tuija Maliniemi Eero Kaakinen Kaisu Aapala Sakari Rehell |
author_facet |
Jarmo Laitinen Jari Oksanen Tuija Maliniemi Eero Kaakinen Kaisu Aapala Sakari Rehell |
author_sort |
Jarmo Laitinen |
title |
Ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in Nyby, northern Finland |
title_short |
Ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in Nyby, northern Finland |
title_full |
Ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in Nyby, northern Finland |
title_fullStr |
Ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in Nyby, northern Finland |
title_full_unstemmed |
Ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in Nyby, northern Finland |
title_sort |
ecological, topographic and successional patterns across wetlands in a rugged land uplift coast in nyby, northern finland |
publisher |
Geographical Society of Finland |
publishDate |
2016 |
url |
https://doi.org/10.11143/51315 https://doaj.org/article/e8a4b3d94f9541ab9cfb08d16fae60d5 |
long_lat |
ENVELOPE(25.150,25.150,70.067,70.067) |
geographic |
Nyby |
geographic_facet |
Nyby |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_source |
Fennia: International Journal of Geography, Vol 194, Iss 1, Pp 89-116 (2016) |
op_relation |
http://ojs.tsv.fi/index.php/fennia/article/view/51315/17134 https://doaj.org/toc/1798-5617 doi:10.11143/51315 1798-5617 https://doaj.org/article/e8a4b3d94f9541ab9cfb08d16fae60d5 |
op_doi |
https://doi.org/10.11143/51315 |
container_title |
Fennia – International Journal of Geography |
_version_ |
1766144755213795328 |