14 Works

Heat stress responses of the kelp Laminaria digitata (Phaeophyceae) across Northeast Atlantic populations: growth, biochemistry, chlorophyll fluorescence, pigments

Daniel Liesner, Louise Fouqueau, Myriam Valero, Michael Y. Roleda, Gareth A. Pearson, Kai Bischof, Klaus Valentin & Inka Bartsch
To understand the thermal plasticity of a coastal foundation species across its latitudinal distribution, we assess physiological responses to high temperature stress in the kelp Laminaria digitata in combination with population genetic characteristics and relate heat resilience to genetic features and phylogeography. We hypothesize that populations from Arctic and cold-temperate locations are less heat resilient than populations from warm distributional edges. Using meristems of natural L. digitata populations from six locations ranging between Kongsfjorden, Spitsbergen...

Clayton Rings and ancient beekeeping. An ethno-zoological contribution

Tilman Musch & Dorothea Brückner
Journal of Global Archaeology, 2020

MigrAgent

Rocco Paolillo & Wander Jager
MigrAgent simulates migration flows of a population from a home country to a host country and mutual adaptation of a migrant and local population post-migration. Agents accept interactions in intercultural networks depending on their degree of conservatism. Conservatism is a group-level parameter normally distributed within each ethnic group. Individual conservatism changes as function of reciprocity of interaction in intergroup experiences of acceptance or rejection. The aim of MigrAgent is to unfold different outcomes of integration,...

Friend or foe? a parasitic wasp shifts the cost/benefit ratio in a nursery pollination system impacting plant fitness.

Carmen Villacañas De Castro & Thomas S. Hoffmeister
Nursery pollination systems are species interactions where pollinators also act as fruit/seed herbivores of the plant partner. While the plants depend on associated insects for pollination, the insects depend on the plants’ reproductive structures for larval development. The outcome of these interactions are thus placed on a gradient between mutualism and antagonism. Less specialised interactions may fluctuate along this gradient with the ecological context, where natural enemies can play an important role. We studied whether...

Data from: Impact of brood parasitism and predation on nest survival of the fan-tailed gerygone in New Caledonia

Alfredo Attisano, Lara B. Groß, Nozomu J. Sato, Yuji Okahisa, Keita D. Tanaka, Roman Gula, Keisuke Ueda & Jörn Theuerkauf
Predation and brood parasitism are common reasons for nesting failure in passerine species and the additive impact by invasive species is a major conservation concern, particularly on tropical islands. Recognising the relative contribution of the different components of nesting failure rates is important to understand co-evolutionary interactions within brood parasite-host systems. In the remote archipelago of New Caledonia, the fan-tailed gerygone Gerygone flavolateralis is the exclusive host of the brood-parasitic shining bronze-cuckoo Chalcites lucidus. Additionally,...

Data from: Seafloor microplastic hotspots controlled by deep-sea circulation

Ian Kane, Michael Clare, Elda Miramontes, Roy Wogelius, James Rothwell, Pierre Garreau & Florian Pohl
While microplastics are known to pervade the global seafloor, the processes that control their dispersal and concentration in the deep sea remain largely unknown. Here we show that thermohaline-driven currents, which build extensive seafloor sediment accumulations, can control the distribution of microplastics and create hotspots of up to 1.9 million pieces m^2. This is the highest reported value for any seafloor setting, globally. Previous studies propose that microplastics are transported to the seafloor by vertical...

Efficient Error-bounded Curvature Optimization for Smooth Machining Paths

Evgenia Selinger & Lars Linsen
Automated machining with 3-axis robots requires the generation of tool paths in form of positions of the tool tip. For 5-axis robots, the orientations of the tool at each position needs to be provided, as well. Such a tool path can be described in form of two curves, one for the positional information (as for 3-axis machining) and one for the orientational information, where the orientation is given by the vector that points from a...

Data from: Pollinator dependence but no pollen limitation for eight plants occurring north of the Arctic Circle

Viviane Koch, Leana Zoller, Joanne M. Bennett & Tiffany M. Knight
Intact interactions between plants and pollinators are essential for the reproduction of pollinator-dependent plant species. Global change factors, such as climate change, have the potential to disrupt these interactions and subsequently impair pollination service. This disruption can result in insufficient pollen receipt for plants and lower their reproduction success. High latitude sites experience particularly rapid climate change and plants at these locations are expected to be vulnerable to lower reproductive success due to pollen limitation....

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...

Data from: Curation: heat stress responses and population genetics of the kelp Laminaria digitata (Phaeophyceae) across latitudes reveal differentiation among North Atlantic populations

Louise Fouqueau, Daniel Liesner, Myriam Valero, Michael Roleda, Gareth Pearson, Kai Bischof, Klaus Valentin & Inka Bartsch
We aim to understand the thermal plasticity of a coastal foundation species across its latitudinal distribution by assessing physiological responses to high temperature stress in the kelp Laminaria digitata in combination with population genetic characteristics. We hypothesize that Arctic and cold-temperate populations are less heat resilient than warm-temperate populations. Using meristems of natural L. digitata populations from six locations ranging between Kongsfjorden, Spitsbergen (79°N), and Quiberon, France (47°N), we performed a common-garden heat stress experiment...

Multikriterielle Bewertung der Energiewende. Nachhaltigkeitsprofile zum Kohleausstieg

Armin Bangert, Ulrich Fahl, Hannes Gaschnig, Claudia Hofer, Oliver Kaltenegger, Jürgen Kopfmüller, Christian Loos, Andreas Löschel, Robert Pietzcker, Michael Quante, Ortwin Renn, Rainer Quitzow, Sabine Schlacke, Volker Stelzer, Daniel Schnittker, Pablo Thier & Gerald Zunker

Coral restoration – a systematic review of current methods, successes, failures and future directions

Lisa Boström-Einarsson, Russell C. Babcock, Elisa Bayraktarov, Daniela Ceccarelli, Nathan Cook, Sebastian C. A. Ferse, Boze Hancock, Peter Harrison, Margaux Hein, Elizabeth Shaver, Adam Smith, David Suggett, Phoebe J. Stewart-Sinclair, Tali Vardi & Ian M. McLeod
Coral reef ecosystems have suffered an unprecedented loss of habitat-forming hard corals in recent decades. While marine conservation has historically focused on passive habitat protection, demand for and interest in active restoration has been growing in recent decades. However, a disconnect between coral restoration practitioners, coral reef managers and scientists has resulted in a disjointed field where it is difficult to gain an overview of existing knowledge. To address this, we aimed to synthesise the...

Multiscale drivers of carabid beetle (Coleoptera: Carabidae) assemblages in small European woodlands

Ronan Marrec, Vincent Le Roux, Ludmilla Martin, Jonathan Lenoir, Jörg Brunet, Sara Cousins, Pallieter De Smedt, Marc Deconchat, Martin Diekmann, Steffen Ehrmann, Emilie Gallet-Moron, Brice Giffard, Jaan Liira, Jessica Lindgren, Alicia Valdés, Kris Verheyen, Monika Wulf & Guillaume Decocq
Aim The spatiotemporal connectivity of forest patches in lowland agricultural landscapes and their age matter to explain current biodiversity patterns across regional as well as biogeographical extents, to the point that it exceeds the contribution of macroclimate for plant diversity in the understory of temperate forests. Whether this holds true for other taxonomic groups remains largely unknown. Yet, it has important consequences for ecosystem functioning and the delivery of ecosystem services. Focusing on carabid beetle...

Data from: High rates of carbon and dinitrogen fixation suggest a critical role of benthic pioneer communities in the energy and nutrient dynamics of coral reefs

Florian Roth, Denis Karcher, Nils Rädecker, Sönke Hohn, Susana Carvalho, Timothy Thomson, Franziska Saalmann, Christian R. Voolstra, Benjamin Kürten, Ulrich Struck, Burton Jones & Christian Wild
1. Following coral mortality in tropical reefs, pioneer communities dominated by filamentous and crustose algae efficiently colonize substrates previously occupied by coral tissue. This phenomenon is particularly common after mass coral mortality following prolonged bleaching events associated with marine heatwaves. 2. Pioneer communities play an important role for the biological succession and reorganization of reefs after disturbance. However, their significance for critical ecosystem functions previously mediated by corals, such as the efficient cycling of carbon...

Registration Year

  • 2020
    14

Resource Types

  • Dataset
    10
  • Text
    3
  • Software
    1

Affiliations

  • University of Bremen
    13
  • University of Münster
    2
  • University of Algarve
    2
  • Alfred Wegener Institute for Polar and Marine Research
    2
  • Roscoff Marine Station
    2
  • Norwegian Institute of Bioeconomy Research
    2
  • Stockholm University
    2
  • Southern Cross University
    1
  • National Oceanography Centre
    1
  • Ghent University
    1