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Egg size versus egg number trade-off in the alpine-tundra wolf spider, Pardosa palustris (Araneae: Lycosidae)
- Nils Hein, Marco R. Brendel, H. Feilhauer, Oliver-D. Finch, J. Löffler
- Environmental SciencePolar Biology
- 15 March 2018
The results suggest that P. palustris, which has a broad habitat niche and a wide geographic distribution, will easily cope with temperature-regime shifts in cold environments, and might lead to advantages regarding the offspring survival rate relative to coexisting species, and thus to changes in the terrestrial arthropod community of alpine-tundra ecosystems.
Parasitoids indicate major climate‐induced shifts in arctic communities
Results suggest that in parts of the warming Arctic, Dryas is being simultaneously exposed to increased herbivory and reduced pollination, suggesting drastic and rapid consequences of climate change on multitrophic‐level community structure and on ecosystem functioning.
Elevational Variation of Reproductive Traits in Five Pardosa (Lycosidae) Species
The results show that female size and egg number were positively correlated among all species, however, no clear elevation-related trend was found and other traits did not change consistently between species and along the elevational gradient.
Alpine activity patterns of Mitopus morio (Fabricius, 1779) are induced by variations in temperature and humidity at different scales in central Norway
- Nils Hein, R. Pape, Oliver-D. Finch, J. Löffler
- Environmental ScienceJournal of Mountain Science
- 15 May 2014
Activity patterns of the Harvestman Mitopus morio were studied along different alpine gradients in the central Norwegian Scandes to prove M. morio proves to be an ideal biogeographic model organism for understanding spatio-temporal responses of alpine ecosystems under modified climatic conditions.
Snow cover determines the ecology and biogeography of spiders (Araneae) in alpine tundra ecosystems
- Nils Hein, H. Feilhauer, Oliver-D. Finch, S. Schmidtlein, J. Löffler
- Environmental Science
- 11 September 2014
This study addresses the spatial distribution of spiders (Araneae) in relation to their environment along multiple ecological and biogeographical gradients. Two study regions representing…
Differences in Mobility and Dispersal Capacity Determine Body Size Clines in Two Common Alpine-Tundra Arthropods
- Niklas Beckers, Nils Hein, Alessa Anneser, K. Vanselow, J. Löffler
- Environmental ScienceInsects
- 22 January 2020
It is found that high mobility in the lycosid spider Pardosa palustris blurs elevational effects, and partially low mobility at least during development makes the carabid beetle Amara alpina more susceptible to Elevational effects.
Effects of Microclimatic Thresholds on the Activity-Abundance and Distribution Patterns of Alpine Carabidae Species
- Niklas Beckers, Nils Hein, K. Vanselow, J. Löffler
- Environmental ScienceAnnales Zoologici Fennici
- 3 May 2018
The goal of our study was to close gaps in knowledge regarding Carabidae distribution and activity in response to microclimate. We aimed to characterise the spatiotemporal distribution of Carabidae…
Broad-scale rather than fine-scale environmental variation drives body size in a wandering predator (Araneae, Lycosidae)
- Nils Hein, J. Pétillon, R. Pape, H. Feilhauer, K. Vanselow, J. Löffler
- Environmental ScienceArctic, Antarctic, and Alpine Research
- 1 January 2019
This work set up transects along environmental gradients in the arctic-alpine ecosystems of Norway and analyzed using a random forest approach to identify the relative importance of topographic position, elevation, and study region on body size of P. palustris, finding that research region was the best explanatory variable.
Mapping of arthropod alpha and beta diversity in heterogeneous arctic-alpine ecosystems