5 Works

Data from: How to characterize chemical exposure to predict ecologic effects on aquatic communities?

Ralf B. Schäfer, Nadine Gerner, Ben J. Kefford, Jes J. Rasmussen, Mikhail A. Beketov, Dick De Zwart, Matthias Liess & Peter C. Von Der Ohe
Reliable characterization of exposure is indispensable for ecological risk assessment of chemicals. To deal with mixtures, several approaches have been developed, but their relevance for predicting ecological effects on communities in the field has not been elucidated. In the present study, we compared nine metrics designed for estimating the total toxicity of mixtures regarding their relationship with an effect metric for stream macroinvertebrates. This was done using monitoring data of biota and organic chemicals, mainly...

Data from: Differentiation in neutral genes and a candidate gene in the pied flycatcher: using biological archives to track global climate change

Kerstin Kuhn, Klaus Schwenk, Christiaan Both, David Canal, Ulf S. Johansson, Steven Van Der Mije, Till Töpfer & Martin Päckert
Global climate change is one of the major driving forces for adaptive shifts in migration and breeding phenology and possibly impacts demographic changes if a species fails to adapt sufficiently. In Western Europe, pied flycatchers (Ficedula hypoleuca) have insufficiently adapted their breeding phenology to the ongoing advance of food peaks within their breeding area and consequently suffered local population declines. We address the question whether this population decline led to a loss of genetic variation,...

Data from: Phylogeography of the reed frog Hyperolius castaneus (Anura: Hyperoliidae) from the Albertine Rift of Central Africa: implications for taxonomy, biogeography and conservation

Eli Greenbaum, Ulrich Sinsch, Edgar Lehr, Federico Valdez & Chifundera Kusamba
We examine the systematics of multiple populations of the Albertine Rift endemic amphibian Hyperolius castaneus, which currently incorporates four subspecies. Standard morphometric data were analyzed with principal components analyses and analyses of covariance. Phylogenetic analyses of two mitochondrial (16S, cyt b) and one nuclear (RAG1) genes were analyzed from 41 samples representing three subspecies. Results indicated some significant morphometric differences between the nominate subspecies H. c. castaneus and the Itombwe Plateau subspecies H. c. constellatus,...

Data from: Pros and cons of external swabbing of amphibians for genetic analyses

Antonia S. Müller, Patrick P. Lenhardt & Kathrin Theissinger
Non-invasive DNA sampling is an important tool in amphibian conservation. Buccal swabs are nowadays replacing the wounding toe-clipping method. Skin and cloaca swabbing are even less invasive and easier to handle than buccal swabbing, but could result in contaminations of genetic material. Therefore, we test if external skin and cloaca swabs are as reliable as buccal swabs for genetic analysis of amphibians. We analysed eight microsatellite loci for the common frog (Rana temporaria, Linnaeus 1758)...

Data from: Review on the effects of toxicants on freshwater ecosystem functions

Katharina Peters, Mirco Bundschuh & Ralf B. Schäfer
We reviewed 122 peer-reviewed studies on the effects of organic toxicants and heavy metals on three fundamental ecosystem functions in freshwater ecosystems, i.e. leaf litter breakdown, primary production and community respiration. From each study meeting the inclusion criteria, the concentration resulting in a reduction of at least 20% in an ecosystem function was standardized based on median effect concentrations of standard test organisms (i.e. algae and daphnids). For pesticides, more than one third of observations...

Registration Year

  • 2013

Resource Types

  • Dataset


  • University of Koblenz and Landau
  • Estación Biológica de Doñana
  • University of Groningen
  • Aarhus University
  • National Institute for Public Health and the Environment
  • Illinois Wesleyan University
  • Swedish University of Agricultural Sciences
  • University of Copenhagen
  • The University of Texas at El Paso
  • Naturalis Biodiversity Center