Advanced

Biologisk mångfald i Linnés hembygd i Småland. 7. Blomflugor (Diptera, Syrphidae).

Nilsson, Sven LU ; Bygebjerg, Rune LU and Franzén, Markus LU (2012) In Entomologisk tidskrift 133. p.137-166
Abstract
Hoverflies are important pollinators, but constitute a less studied group of insects. In this study we collected hoverflies in most open grasslands and woodlands in an area of 5000 hectares over six years (2004-2009) in the central part of the parish of Stenbrohult, southern

Sweden (Fig. 1; 56o 37´ N, 14o 11´ E). The studied area is dominated by spruce forests, but deciduous forests are relatively abundant. Grasslands, mainly grazed by cattle and horses, cover about 6 % of the area. We sampled 20 subareas/farms dominated by grasslands, surrounded by forests and/or lakes. Mires and unpolluted wetlands are common in the study area, and the large Lake Möckeln in the west is unregulated. Parts of four farms are protected as nature... (More)
Hoverflies are important pollinators, but constitute a less studied group of insects. In this study we collected hoverflies in most open grasslands and woodlands in an area of 5000 hectares over six years (2004-2009) in the central part of the parish of Stenbrohult, southern

Sweden (Fig. 1; 56o 37´ N, 14o 11´ E). The studied area is dominated by spruce forests, but deciduous forests are relatively abundant. Grasslands, mainly grazed by cattle and horses, cover about 6 % of the area. We sampled 20 subareas/farms dominated by grasslands, surrounded by forests and/or lakes. Mires and unpolluted wetlands are common in the study area, and the large Lake Möckeln in the west is unregulated. Parts of four farms are protected as nature reserves and more reserves are planned for other farms in the area. Hoverflies

were surveyed by 6-8 annual visits to each subarea. The visits were evenly spread over the period from the middle of May to the middle of August, covering the open grasslands.

On most farms additional visits were made, also in April and September, and one farm(Djäknabygd) was visited almost weekly from May to August each year from 2004 to 2012.

In total we found 225 hoverfly species (Appendix). On the most thoroughly surveyed farm Djäknabygd 198 species were recorded on an area of about 17 hectares, as far as we know the highest species richness documented in Europe in such a small area. There was a high

variation of species richness between the other farms, varying from 74 to 140. The highest number of species was found on farms in the central and western parts of the study-area,

where old deciduous trees are most common and traditionally managed (harvest in late summer) and unfertilized hay-meadows still exists. Remarkable findings were among others; Brachyopa bicolor, Brachyopa panzeri, Callicera aenea, Callicera aurata, Chalcosyrphus piger, Chalcosyrphus valgus, Ferdinandea ruficornis, Hammerschmidtia ferruginea,Pocota personata, Temnostoma apiforme and Xylota meigeniana which all are of European conservation concern. We discuss the hoverfly fauna from a nature conservation point of view, and give details about habitat, phenology and flower use for the less common species. (Less)
Please use this url to cite or link to this publication:
author
organization
alternative title
Biodiversity at Linnaeus´ birthplace in the parish of Stenbrohult, southern Sweden. 7. Hoverflies (Diptera, Syrphidae).
publishing date
type
Contribution to journal
publication status
published
subject
in
Entomologisk tidskrift
volume
133
pages
137 - 166
publisher
Sveriges Entomologiska Förening
ISSN
0013-886X
language
Swedish
LU publication?
yes
id
d4f60feb-a6d9-43db-9b0f-356dd4a89367 (old id 4936730)
date added to LUP
2015-01-22 11:40:23
date last changed
2016-04-15 23:14:17
@article{d4f60feb-a6d9-43db-9b0f-356dd4a89367,
  abstract     = {Hoverflies are important pollinators, but constitute a less studied group of insects. In this study we collected hoverflies in most open grasslands and woodlands in an area of 5000 hectares over six years (2004-2009) in the central part of the parish of Stenbrohult, southern<br/><br>
Sweden (Fig. 1; 56o 37´ N, 14o 11´ E). The studied area is dominated by spruce forests, but deciduous forests are relatively abundant. Grasslands, mainly grazed by cattle and horses, cover about 6 % of the area. We sampled 20 subareas/farms dominated by grasslands, surrounded by forests and/or lakes. Mires and unpolluted wetlands are common in the study area, and the large Lake Möckeln in the west is unregulated. Parts of four farms are protected as nature reserves and more reserves are planned for other farms in the area. Hoverflies<br/><br>
were surveyed by 6-8 annual visits to each subarea. The visits were evenly spread over the period from the middle of May to the middle of August, covering the open grasslands.<br/><br>
On most farms additional visits were made, also in April and September, and one farm(Djäknabygd) was visited almost weekly from May to August each year from 2004 to 2012.<br/><br>
In total we found 225 hoverfly species (Appendix). On the most thoroughly surveyed farm Djäknabygd 198 species were recorded on an area of about 17 hectares, as far as we know the highest species richness documented in Europe in such a small area. There was a high<br/><br>
variation of species richness between the other farms, varying from 74 to 140. The highest number of species was found on farms in the central and western parts of the study-area,<br/><br>
where old deciduous trees are most common and traditionally managed (harvest in late summer) and unfertilized hay-meadows still exists. Remarkable findings were among others; Brachyopa bicolor, Brachyopa panzeri, Callicera aenea, Callicera aurata, Chalcosyrphus piger, Chalcosyrphus valgus, Ferdinandea ruficornis, Hammerschmidtia ferruginea,Pocota personata, Temnostoma apiforme and Xylota meigeniana which all are of European conservation concern. We discuss the hoverfly fauna from a nature conservation point of view, and give details about habitat, phenology and flower use for the less common species.},
  author       = {Nilsson, Sven and Bygebjerg, Rune and Franzén, Markus},
  issn         = {0013-886X},
  language     = {swe},
  pages        = {137--166},
  publisher    = {Sveriges Entomologiska Förening},
  series       = {Entomologisk tidskrift},
  title        = {Biologisk mångfald i Linnés hembygd i Småland. 7. Blomflugor (Diptera, Syrphidae).},
  volume       = {133},
  year         = {2012},
}