The importance of small natural features in forests—How the overgrowth of forest gaps affects indigenous flower supply and flower‐visiting insects and seed sets of six Campanula species

URN to cite this document:

urn:nbn:de:bvb:355-epub-516628 Copy

DOI to cite this document:

10.5283/epub.51662 Copy

Braun‐Reichert, Ralf ; Rubanschi, Sven ; Poschlod, Peter

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Date of publication of this fulltext: 14 Feb 2022 18:07

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Details

Item type:	Article
Open Access Type:	DEAL (Wiley Gold)
Höhe Gebühr (aus OpenAPC):	1370.88
Institution der Zahlung:	Regensburg U
Journal or Publication Title:	Ecology and Evolution
Publisher:	Wiley
Place of Publication:	HOBOKEN
Volume:	11
Number of Issue or Book Chapter:	17
Page Range:	pp. 11991-12002
Date:	1 August 2021
Institutions:	Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Ökologie und Naturschutzbiologie (Prof. Dr. Peter Poschlod) Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Ökologie und Naturschutzbiologie (Prof. Dr. Peter Poschlod)
Identification Number:	Value Type 10.1002/ece3.7965 DOI
Keywords:	POLLEN LIMITATION; COMMUNITIES; TEMPERATE; BIODIVERSITY; POLLINATORS; VISITATION; LANDSCAPES; DIVERSITY; RESPONSES; PLANTS; bees; Campanula; flies; flower visitors; forest management; gap dynamics; pollination
Dewey Decimal Classification:	500 Science > 580 Botanical sciences 500 Science > 580 Botanical sciences
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Item ID:	51662

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Abstract

The abandonment of historical land-use forms within forests, such as grazing or coppicing, and atmospheric nitrogen deposition, has led to an increasing overgrowth of forest gaps and canopy closure in forest ecosystems of Central Europe. From 1945 to 2015, 81% of the forest gaps greater than 150 m(2) within the study area transitioned into a closed forest. This study investigated how the ...

Abstract

The abandonment of historical land-use forms within forests, such as grazing or coppicing, and atmospheric nitrogen deposition, has led to an increasing overgrowth of forest gaps and canopy closure in forest ecosystems of Central Europe. From 1945 to 2015, 81% of the forest gaps greater than 150 m(2) within the study area transitioned into a closed forest. This study investigated how the overgrowth process affects flower supply, flower visitors, and reproduction of Campanula species. Six native Campanula species with different light requirements were used as phytometers. The forest gaps in the studied area are a feature of the historical European cultural landscape. We compared large gaps caused by human activities, small gaps caused by habitat conditions, and closed forests. In eight blocked replicates, each with the three habitat categories, we recorded the flower cover and number of indigenous flowering species in the immediate surroundings, and, of six Campanula species, flower visitors and seed production. Forest gaps and their size positively affected the number of flowering plant species in the surrounding area, the number of all flower visitor groups, and the number of seeds produced by all six Campanula species. Flower cover in the surrounding area was higher in large gaps, but there was no difference between small gaps and closed forests. Among flower visitors, small bees varied the most between the three habitat categories, and flies varied the least. The effect on the number of seeds produced was particularly strong for three light-demanding Campanula species. The overgrowth of forest gaps negatively affected flower supply, flower-visiting insects, and seed sets of six Campanula species. Forest gaps should be managed to maintain the reproduction of open forest plants and their pollinators.

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