5 Works

Data from: Divergent clades or cryptic species? Mito-nuclear discordance in a Daphnia species complex

Anne Thielsch, Alexis Knell, Ali Mohammadyari, Adam Petrusek & Klaus Schwenk
Background: Genetically divergent cryptic species are frequently detected by molecular methods. These discoveries are often a byproduct of molecular barcoding studies in which fragments of a selected marker are used for species identification. Highly divergent mitochondrial lineages and putative cryptic species are even detected in intensively studied animal taxa, such as the crustacean genus Daphnia. Recently, eleven such lineages, exhibiting genetic distances comparable to levels observed among well-defined species, were recorded in the D. longispina...

Data from: Landscape complexity promotes hoverflies across different types of semi-natural habitats in farmland

Jens Schirmel, Matthias Albrecht, Philipp-Martin Bauer, Louis Sutter, Sonja C. Pfister & Martin H. Entling
1. Semi-natural habitats (SNH) provide essential resources for many organisms in agricultural landscapes and can increase biodiversity at the local and landscape scale. For the management of ecosystem services, it is crucial to understand how local characteristics of SNH and the surrounding landscape complexity affect beneficial species. 2. We investigated this for hoverflies (Diptera: Syrphidae), an important functional group providing both pest control and pollination services, in a total of 138 SNH in 35 agricultural...

Data from: Contrasting effects of aquatic subsidies on a terrestrial trophic cascade

Nadin Graf, Roman Bucher, Ralf B. Schaefer & Martin H. Entling
Subsidies from adjacent ecosystems can alter recipient food webs and ecosystem functions, such as herbivory. Emerging aquatic insects from streams can be an important prey in the riparian zone. Such aquatic subsidies can enhance predator abundances or cause predators to switch prey, depending on the herbivores. This can lead to an increase or decrease of in situ herbivores and herbivory. We examined the effects of aquatic subsidies on a simplified terrestrial food web consisting of...

Data from: Population transcriptomics in Daphnia: the role of thermal selection

Maike Herrmann, Suda Parimala Ravindran, Klaus Schwenk & Mathilde Cordellier
The complex interplay of forces influencing genetic divergence among populations complicates the discovery of the genetic basis underlying local adaptation. Here, we utilized for the first time a combined reverse ecology and population transcriptomic approach to assess the contribution of thermal selection to population differentiation, thereby considering transcriptome-wide variation in both gene expression profiles and DNA sequences. We compared transcriptomes among four Daphnia galeata populations and identified transcripts potentially responding to local thermal selection based...

Data from: Sensitivity of commercial pumpkin yield to potential decline among different groups of pollinating bees

Sonja C. Pfister, Philipp W. Eckerter, Jens Schirmel, James E. Cresswell & Martin H. Entling
The yield of animal-pollinated crops is threatened by bee declines, but its precise sensitivity is poorly known. We therefore determined the yield dependence of Hokkaido pumpkin in Germany on insect pollination by quantifying: (i) the relationship between pollen receipt and fruit set and (ii) the cumulative pollen deposition of each pollinator group. We found that approximately 2500 pollen grains per flower were needed to maximize fruit set. At the measured rates of flower visitation, we...

Registration Year

  • 2017
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Resource Types

  • Dataset
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Affiliations

  • University of Koblenz and Landau
    5
  • University of Hamburg
    1
  • Ferdowsi University of Mashhad
    1
  • Charles University
    1
  • University of Exeter
    1