Amoebocytes facilitate efficient carbon and nitrogen assimilation in the Cassiopea Symbiodiniaceae symbiosisNiclas Heidelberg Lyndby, Nils Rädecker, Sandrine Bessette, Louise Jensen, Stéphane Escrig, Erik Trampe, Michael Kühl & Anders Meibom
The upside-down jellyfish Cassiopea engages in symbiosis with photosynthetic microalgae that facilitate uptake and recycling of inorganic nutrients. In contrast to most other symbiotic cnidarians, algal endosymbionts in Cassiopea are not restricted to the gastroderm but are found in amoebocyte cells within the mesoglea. While symbiont-bearing amoebocytes are highly abundant, their role in nutrient uptake and cycling in Cassiopea remains unknown. By combining isotopic labelling experiments with correlated SEM and NanoSIMS imaging, we quantified the...
Carabids data of Pterostichus flavofemoratus and Carabus depressus in the Gran Paradiso National Park (2006, 2007, 2012, 2013)Jonathan Giezendanner, Damiano Pasetto, Javier Perez-Saez, Cristiana Cerrato, Ramona Viterbi, Silvia Terzago, Elisa Palazzi & Andrea Rinaldo
Understanding risks to biodiversity requires predictions of the spatial distribution of species adapting to changing ecosystems and, to that end, earth observations integrating field surveys prove essential as they provide key figures for assessing landscape-wide biodiversity scenarios. Here, we develop, and apply to a relevant case study, a method suited to merge earth/field observations with spatially explicit stochastic metapopulation models to study the near-term ecological dynamics of target species in complex terrains. Our framework incorporates...
Automated flow control of a multi-lane swimming chamber for small fishes indicates species-specific sensitivity to experimental protocolsBjörn Illing, Andrea Severati, Justin Hochen, Paul Boyd, Paulin Raison, Rachel Mather, Adam T. Downie, Jodie L. Rummer, Frederieke J. Kroon & Craig Humphrey
In fishes, swimming performance is considered an important metric to measure fitness, dispersal, and migratory abilities. Swimming performance of individual larval fishes is often integrated into models to make inferences on how environmental parameters affect population-level dynamics (e.g., connectivity). However, little information exists regarding how experimental protocols affect the swimming performance of marine fish larvae. In addition, the technical setups used to measure larval fish swimming performance often lack automation and accurate control of water...
Data from: Contrasting leaf trait responses of conifer and broadleaved seedlings to altered resource availability are linked to resource strategiesBarbara Moser, Yan-Li Zhang, Mai-He Li, Thomas Wohlgemuth, Jing-Pin Lei & Christoph Bachofen
(1) Understanding tree seedling responses to water, nutrient and light availability is crucial to precisely predict potential shifts in composition and structure of forest communities under future climatic conditions. (2) We exposed seedlings of widespread central European tree species with contrasting leaf habit, deciduous broadleaves (DB) and evergreen conifers (EC), to factorial combinations of manipulated precipitation (100% and 50% of ambient), shade (40% and 60% of full sunlight) and nutrient availability (low and high NPK),...
Seek and learn: automated identification of microevents in animal behaviour using envelopes of acceleration data and machine learningPritish Chakravarty, Gabriele Cozzi, Hooman Dejnabadi, Pierre-Alexandre Léziart, Marta Manser, Arpat Ozgul & Kamiar Aminian
1. Animal-borne accelerometers have been used across more than 120 species to infer biologically significant information such as energy expenditure and broad behavioural categories. While the accelerometer’s high sensitivity to movement and fast response times present the unprecedented opportunity to resolve fine-scale behaviour, leveraging this opportunity will require overcoming the challenge of developing general, automated methods to analyse the nonstationary signals generated by nonlinear processes governing erratic, impulsive movement characteristic of fine-scale behaviour. 2. We...
Allometric constraint is a product of natural selection, particularly with respect to body size and traits constrained by physical properties thereof, such as metabolism, longevity, and vocal frequency. Parameters describing allometric relationships are conserved across most lineages, indicating that physical constraints dictate scaling patterns in deep time, despite substantial genetic and ecological divergence among organisms. Acoustic allometry (sound frequency ~ body size) is conserved across frogs, in defiance of massive variation in both body size...
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 reefsFlorian 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...
Milk production and environmental conditions of mountain-pastured Braunvieh cows between 2000 and 2015Solange Duruz & Christine Flury
This dataset is a subset of the dataset used in the associated article, linking environmental data to milk records of mountain-pastured cows between 2000 and 2015. In particular it contains information on the cow and lactation cycle (lactation number, date of calving, date of first record in the alp, average quantity of milk over 3 milk records taken in the alp) and environmental condition (temperature humidity index, cold stress index, averaged over 3 and 30...
Data from: Seascape genomics as a new tool to empower coral reef conservation strategies: an example on north-western Pacific Acropora digitiferaOliver Selmoni, Estelle Rochat, Gael Lecellier, Véronique Berteaux-Lecellier & Stephane Joost
Coral reefs are suffering a major decline due to the environmental constraints imposed by climate change. Over the last 20 years, three major coral bleaching events occurred in concomitance with anomalous heat waves, provoking a severe loss of coral cover worldwide. The conservation strategies for preserving reefs, as they are implemented now, cannot cope with global climatic shifts. Consequently, researchers are advocating for preservation networks to be set-up to reinforce coral adaptive potential. However, the...
École Polytechnique Fédérale de Lausanne9
Universidade Federal de Goiás1
New York University Abu Dhabi1
Institute of Atmospheric Sciences and Climate1
George Washington University1
Leibniz Center for Tropical Marine Ecology1
King Abdullah University of Science and Technology1
Bern University of Applied Sciences1
University of Copenhagen1