10 Works

Aquaculture at the crossroads of global warming and antimicrobial resistance

Miriam Reverter, Samira Sarter, Domenico Caruso, Jean-Christophe Avarre, Marine Combe, Elodie Pepey, Laurent Pouyaud, Hugues De Verdal, Sarahi Vega-Heredía & Rodolphe Gozlan
In many developing countries, aquaculture is key to ensuring food security for millions of people. It is thus important to measure the full implications of environmental changes on the sustainability of aquaculture. We conducted a double meta-analysis (460 articles) to explore how global warming and antimicrobial resistance (AMR) impacts aquaculture. We calculated a Multi-Antibiotic Resistance index (MAR) of aquaculture-related bacteria (11,274 strains) for 40 countries, of which mostly low- and middle-income countries present high AMR...

Gene Delivery to Neurons in the Auditory Brainstem of Barn Owls using Standard Recombinant Adeno-associated Virus Vectors

Nadine Thiele, K. Jannis Hildebrandt & Christine Köppl
Recombinant adeno-associated virus (rAAV) vectors are a commonly used tool for gene delivery. There is a large choice of different serotypes whose transduction efficiency varies for different animal species. In this study, three rAAV vectors were tested for transduction efficiency in the auditory brainstem of adult barn owls (Tyto alba) which are not standard laboratory animals. Injections with rAAV serotypes 2/1 and 2/5 resulted in reliable expression in various nuclei of the auditory brainstem of...

Community structure of vascular epiphytes: a neutral perspective

Thijs Janzen, Gerhard Zotz & Rampal Etienne
Vascular epiphytes form a diverse group of almost 30,000 species, yet theory concerning their community structure is still largely lacking. We therefore employed simple models of biodiversity, (near-)neutral models, to study to what extent they can explain their community structure. With recently developed tools for (near-)neutral models we analyzed species abundance data from many samples in Central and South America which we divided into four metacommunities (Mesoamerica, Central America, Amazonia and Paraná). For each metacommunity...

Cross-continental analysis of coastal biodiversity change

Helmut Hillebrand, Gavin M. Rishworth, Janine B. Adams, Matthew S. Bird, Nicola K. Carrasco, Andreas Dänhardt, Jennifer Dannheim, Daniel A. Lemley, Pierre A. Pistorius & Gregor Scheiffarth
Whereas the anthropogenic impact on marine biodiversity is undebated, the quantification and prediction of this change is not trivial. Simple traditional measures of biodiversity (e.g., richness, diversity indices) do not capture the magnitude and direction of changes in species or functional composition. In this paper, we apply recently developed methods for measuring biodiversity turnover to time-series data of four broad taxonomic groups from two coastal regions: the southern North Sea (Germany) and the South African...

Shape matters: The relationship between cell geometry and diversity in phytoplankton

Alexey Ryabov, Onur Kerimoglu, Irina Olenina, Leonilde Roselli, Alberto Basset, Elena Stanca, Elena Litchman & Bernd Blasius
We compiled the most comprehensive data set of phytoplankton and other marine protists in terms of sizes, shapes, genus, and species names. Samples were obtained from seven globally distributed marine areas: Baltic Sea, North Atlantic (Scotland), Mediterranean Sea (Greece and Turkey), Indo-Pacific (the Maldives), South-western Pacific (Australia), Southern Atlantic (Brazil). See details in Ryabov et al Ecology Letters 'Shape matters: the relationship between cell geometry and diversity in phytoplankton', https://doi.org/10.1111/ele.13680

Global gradients in intraspecific variation in vegetative and floral traits are partially associated with climate and species richness

Jonas Kuppler, Cécile H. Albert, Gregory M. Ames, W. Scott Armbruster, Gerhard Boenisch, Florian C. Boucher, Diane R. Campbell, Liedson T. Carneiro, Eduardo Chacón-Madrigal, Brian J. Enquist, Carlos R. Fonseca, José M. Gómez, Antoine Guisan, Pedro Higuchi, Dirk N. Karger, Jens Kattge, Michael Kleyer, Nathan J. B. Kraft, Anne-Amélie C. Larue-Kontić, Amparo Lázaro, Martin Lechleitner, Deirdre Loughnan, Vanessa Minden, Ülo Niinemets, Gerhard E. Overbeck … & Robert R. Junker
Aim Intraspecific trait variation (ITV) within natural plant communities can be large, influencing local ecological processes and dynamics. Here, we shed light on how ITV in vegetative and floral traits responds to large-scale abiotic and biotic gradients (i.e. climate and species richness). Specifically, we tested if associations of ITV with temperature, precipitation and species richness were consistent with any of from four hypotheses relating to stress-tolerance and competition. Furthermore, we estimated the degree of correlation...

Geometric morphometric wing analysis represents a robust tool to identify female mosquitoes (Diptera: Culicidae) in Germany

Felix Gregor Sauer, Linda Jaworski, Laura Erdbeer, Anna Heitmann, Jonas Schmidt-Chanasit, Ellen Kiel & Renke Lühken
Accurate species identification is the prerequisite to assess the relevance of mosquito specimens, but is often hindered by missing or damaged morphological features. The present study analyses the applicability of wing geometric morphometrics as a low-cost and practical alternative to identify native mosquitoes in Germany. Wing pictures were collected for 502 female mosquitoes of five genera and 19 species from 80 sampling sites. The reliable species identification based on interspecific wing geometry of 18 landmarks...

Humpback whale acoustic presence in the Atlantic sector of the Southern Ocean

Elena Schall, Karolin Thomisch, Olaf Boebel, Gabriele Gerlach, Ilse Van Opzeeland, Stefanie Spiesecke & Sari Mangia Woods
In the Atlantic Sector of the Southern Ocean (ASSO), the investigation of baleen whale distribution by sighting surveys is temporally restricted to the austral summer. The implementation of autonomous passive acoustic monitoring, in turn, allows studying vocal baleen whales year-round. This study describes the results of analyzing passive acoustic data spanning 12 recording positions throughout the ASSO applying a combination of automatic and manual analysis methods to register humpback whale acoustic activity. Humpback whales were...

Rhododendron smokianum Ralf Bauer & Albach, a new species from the Great Smoky Mountains

Dirk Albach & Ralf Bauer
Species delimitation in Rhododendron subsect. Caroliniana (Ericaceae) has been disputed in the past with one or three species accepted. Here we report a fourth species, Rh. smokianum, a narrow endemic from the Great Smoky Mountains (Tennessee/North Carolina, USA). It is characterized by short-tubed corollas and small, compact growth. We support our conclusion by phylogenetic analyses of ITS and plastid trnL-F sequence data. The new species is a specialist of open mafic rock slopes and maintains...

Scale dependence of temporal biodiversity change in modern and fossil marine plankton

Aleksandra Lewandowska, Lukas Jonkers, Holger Auel, Jan Freund, Wilhelm Hagen, Michal Kucera & Helmut Hillebrand
Aim Biodiversity dynamics comprise evolutionary and ecological changes on multiple temporal scales from millions of years to decades, but they are often interpreted within a single time frame. Planktonic foraminifera communities offer a unique opportunity for analyzing the dynamics of marine biodiversity over different temporal scales. Our study aims to provide a baseline for assessments of biodiversity patterns over multiple time scales, which is urgently needed to interpret biodiversity responses to increasing anthropogenic pressure. Location...

Registration Year

  • 2020

Resource Types

  • Dataset


  • Carl von Ossietzky University of Oldenburg
  • Alfred Wegener Institute for Polar and Marine Research
  • Universität Hamburg
  • University of Avignon
  • Duke University
  • Agenzia Regionale per la Protezione Ambientale
  • Estonian University of Life Sciences
  • University of Groningen
  • University of Lausanne
  • Bernhard Nocht Institute for Tropical Medicine