TY  - JOUR
A1  - Duque, Laura
A1  - Poelman, Erik H.
A1  - Steffan-Dewenter, Ingolf
T1  - Plant-mediated effects of ozone on herbivores depend on exposure duration and temperature
JF  - Scientific Reports
N2  - Abiotic stress by elevated tropospheric ozone and temperature can alter plants’ metabolism, growth, and nutritional value and modify the life cycle of their herbivores. We investigated how the duration of exposure of Sinapis arvensis plants to high ozone and temperature levels affect the life cycle of the large cabbage white, Pieris brassicae. Plants were exposed to ozone-clean (control) or ozone-enriched conditions (120 ppb) for either 1 or 5 days and were afterwards kept in a greenhouse with variable temperature conditions. When given the choice, P. brassicae butterflies laid 49% fewer eggs on ozone-exposed than on control plants when the exposure lasted for 5 days, but showed no preference when exposure lasted for 1 day. The caterpillars took longer to hatch on ozone-exposed plants and at lower ambient temperatures. The ozone treatment had a positive effect on the survival of the eggs. Ozone decreased the growth of caterpillars reared at higher temperatures on plants exposed for 5 days, but not on plants exposed for 1 day. Overall, longer exposure of the plants to ozone and higher temperatures affected the life cycle of the herbivore more strongly. With global warming, the indirect impacts of ozone on herbivores are likely to become more common.
KW  - Ecology
KW  - Environmental impact
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-202805
VL  - 9
ER  - 
TY  - JOUR
A1  - Albrecht, Jörg
A1  - Classen, Alice
A1  - Vollstädt, Maximilian G.R.
A1  - Mayr, Antonia
A1  - Mollel, Neduvoto P.
A1  - Schellenberger Costa, David
A1  - Dulle, Hamadi I.
A1  - Fischer, Markus
A1  - Hemp, Andreas
A1  - Howell, Kim M.
A1  - Kleyer, Michael
A1  - Nauss, Thomas
A1  - Peters, Marcell K.
A1  - Tschapka, Marco
A1  - Steffan-Dewenter, Ingolf
A1  - Böhning-Gaese, Katrin
A1  - Schleuning, Matthias
T1  - Plant and animal functional diversity drive mutualistic network assembly across an elevational gradient
JF  - Nature Communications
N2  - Species' functional traits set the blueprint for pair-wise interactions in ecological networks. Yet, it is unknown to what extent the functional diversity of plant and animal communities controls network assembly along environmental gradients in real-world ecosystems. Here we address this question with a unique dataset of mutualistic bird-fruit, bird-flower and insect-flower interaction networks and associated functional traits of 200 plant and 282 animal species sampled along broad climate and land-use gradients on Mt. Kilimanjaro. We show that plant functional diversity is mainly limited by precipitation, while animal functional diversity is primarily limited by temperature. Furthermore, shifts in plant and animal functional diversity along the elevational gradient control the niche breadth and partitioning of the respective other trophic level. These findings reveal that climatic constraints on the functional diversity of either plants or animals determine the relative importance of bottom-up and top-down control in plant-animal interaction networks.
KW  - Traits-Environment Relationships
KW  - Species Traits
KW  - Ecological Networks
KW  - 4TH-Corner Problem
KW  - Multiple Traits
KW  - Bottom-up
KW  - Biodiversity
KW  - Community ecology
KW  - Ecological networks
KW  - Ecology
KW  - Ecosystem ecology
Y1  - 2018
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-221056
VL  - 9
ER  -