TY  - JOUR
A1  - Loos, Jacqueline
A1  - Krauss, Jochen
A1  - Lyons, Ashley
A1  - Föst, Stephanie
A1  - Ohlendorf, Constanze
A1  - Racky, Severin
A1  - Röder, Marina
A1  - Hudel, Lennart
A1  - Herfert, Volker
A1  - Tscharntke, Teja
T1  - Local and landscape responses of biodiversity in calcareous grasslands
JF  - Biodiversity and Conservation
N2  - Across Europe, calcareous grasslands become increasingly fragmented and their quality deteriorates through abandonment and land use intensification, both affecting biodiversity. Here, we investigated local and landscape effects on diversity patterns of several taxonomic groups in a landscape of highly fragmented calcareous grassland remnants. We surveyed 31 grassland fragments near Göttingen, Germany, in spring and summer 2017 for vascular plants, butterflies and birds, with sampling effort adapted to fragment area. Through regression modelling, we tested relationships between species richness and fragment size (from 314 to 51,395 m\(^2\)), successional stage, habitat connectivity and the per cent cover of arable land in the landscape at several radii. We detected 283 plant species, 53 butterfly species and 70 bird species. Of these, 59 plant species, 19 butterfly species and 9 bird species were grassland specialists. Larger fragments supported twice the species richness of plants than small ones, and hosted more species of butterflies, but not of birds. Larger grassland fragments contained more grassland specialist plants, but not butterfly or bird specialists. Increasing amounts of arable land in the landscape from 20 to 90% was related to the loss of a third of species of plants, and less so, of butterflies, but not of birds. Per cent cover of arable land negatively correlated to richness of grassland specialist plants and butterflies, but positively to grassland specialist birds. We found no effect by successional stages and habitat connectivity. Our multi-taxa approach highlights the need for conservation management at the local scale, complemented by measures at the landscape scale.
KW  - abandonment
KW  - birds
KW  - butterflies
KW  - land use intensification
KW  - nature conservation
KW  - vascular plants
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-308595
SN  - 0960-3115
SN  - 1572-9710
VL  - 30
IS  - 8-9
ER  - 
TY  - JOUR
A1  - Thorn, Simon
A1  - Chao, Anne
A1  - Bernhardt-Römermann, Markus
A1  - Chen, Yan-Han
A1  - Georgiev, Kostadin B.
A1  - Heibl, Christoph
A1  - Müller, Jörg
A1  - Schäfer, Hanno
A1  - Bässler, Claus
T1  - Rare species, functional groups, and evolutionary lineages drive successional trajectories in disturbed forests
JF  - Ecology
N2  - Following natural disturbances, additional anthropogenic disturbance may alter community recovery by affecting the occurrences of species, functional groups, and evolutionary lineages. However, our understanding of whether rare, common, or dominant species, functional groups, or evolutionary lineages are most strongly affected by an additional disturbance, particularly across multiple taxa, is limited. Here, we used a generalized diversity concept based on Hill numbers to quantify the community differences of vascular plants, bryophytes, lichens, wood‐inhabiting fungi, saproxylic beetles, and birds in a storm‐disturbed, experimentally salvage logged forest. Communities of all investigated species groups showed dissimilarities between logged and unlogged plots. Most species groups showed no significant changes in dissimilarities between logged and unlogged plots over the first seven years of succession, indicating a lack of community recovery. In general, the dissimilarities of communities were mainly driven by rare species. Convergence of dissimilarities occurred more often than divergence during the early stages of succession for rare species, indicating a major role in driving decreasing taxonomic dissimilarities between logged and unlogged plots over time. Trends in species dissimilarities only partially match the trends in dissimilarities of functional groups and evolutionary lineages, with little significant changes in successional trajectories. Nevertheless, common and dominant species contributed to a convergence of dissimilarities over time in the case of the functional dissimilarities of wood‐inhabiting fungi. Our study shows that salvage logging following disturbances can alter successional trajectories in early stages of forest succession following natural disturbances. However, community changes over time may differ remarkably in different taxonomic groups and are best detected based on taxonomic, rather than functional or phylogenetic dissimilarities.
KW  - wood-inhabiting fungi
KW  - birds
KW  - bryophytes
KW  - climate change
KW  - forest succession
KW  - Hill numbers
KW  - natural disturbances
KW  - salvage logging
KW  - saproxylic beetles
KW  - vascular plants
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-212378
VL  - 101
IS  - 3
ER  -