© OIKOS. Published by John Wiley & Sons Ltd
- Animal Movement - tracking and modelling
- Into darkness: unravelling the structure of soil food webs
- Dispersal Evolution and Species’ Range
- Surf & Turf
- Partial Migration
- Body Size and Ecosystem Dynamics
Tracking of animal movements is a fundamental part of biological research. Rapid technological advances allow more and more details to be revealed, but do also increase the needs for models dealing with the vast amount of data. In this Virtual issue we highlight some of the many papers focusing on tracking and modelling of animal movements published in the Nordic Society Oikos journals. The issue is especially compiled for the CAnMove [www.CAnMove.lu.se] symposium ‘Bridging the gap between modelling and tracking data’ held in Lund in February 2016.
Ecography, Oikos and Journal of Avian Biology all have a strong tradition of publishing papers on all aspects of animal movements and we hope that you will find this thematic virtual issue especially interesting. All the papers are freely available for everyone to enjoy.
Intrinsic and extrinsic drivers of activity budgets in sympatric grey and harbour seals
Deborah J. F. Russell, Brett T. McClintock, Jason Matthiopoulos, Paul M. Thompson, Dave Thompson, Phil S. Hammond, Esther L. Jones, Monique L. MacKenzie, Simon Moss and Bernie J. McConnell
Causes and characteristics of reverse bird migration: an analysis based on radar, radio tracking and ringing at Falsterbo, Sweden
Cecilia Nilsson and Sissel Sjöberg
Quantifying non-breeding season occupancy patterns and the timing and drivers of autumn migration for a migratory songbird using Doppler radar
Andrew J. Laughlin, Daniel R. Sheldon, David W. Winkler and Caz M. Taylor
The migration of the great snipe Gallinago media: intriguing variations on a grand theme
Åke Lindström, Thomas Alerstam, Peter Bahlenberg, Robert Ekblom, James W. Fox, Johan Råghall and Raymond H. G. Klaassen
Home ranges in moving habitats: polar bears and sea ice
Marie Auger-Méthè, Mark A. Lewis and Andrew E. Derocher
Landscapes of Coexistence for terrestrial carnivores: the ecological consequences of being downgraded from ultimate to penultimate predator by humans
Alayne Oriol-Cotterill, Marion Valeix, Laurence G. Frank, Corinna Riginos and David W. Macdonald
Unveiling trade-offs in resource selection of migratory caribou using a mechanistic movement model of availability
Guillaume Bastille-Rousseau, Jonathan R. Potts, James A. Schaefer, Mark A. Lewis, E. Hance Ellington, Nathaniel D. Rayl, Shane P. Mahoney and Dennis L. Murray
Facilitative interactions among the pelagic community of temperate migratory terns, tunas and dolphins
Holly F. Goyert, Lisa L. Manne and Richard R. Veit
Individual seabirds show consistent foraging strategies in response to predictable fisheries discards
Samantha C. Patrick, Stuart Bearhop, Thomas W. Bodey, W. James Grecian, Keith C. Hamer, Janette Lee and Stephen C. Votier
Roe deer at risk: teasing apart habitat selection and landscape constraints in risk exposure at multiple scales
Sophie Padié, Nicolas Morellet, A. J. Mark Hewison, Jean-Louis Martin, Nadège Bonot, Bruno Cargnelutti and Simon Chamaillé-Jammes
Important marine habitat off east Antarctica revealed by two decades of multi-species predator tracking
Ben Raymond, Mary-Anne Lea, Toby Patterson, Virginia Andrews-Goff, Ruth Sharples, Jean Benoît Charrassin, Manuelle Cottin, Louise Emmerson, Nick Gales, Rosemary Gales, Simon D. Goldsworthy, Rob Harcourt, Akiko Kato, Roger Kirkwood, Kieran Lawton, Yan Ropert-Coudert, Colin Southwell, John van der Hoff, Barbara Wienecke, Eric J. Woehler, Simon Wotherspoon and Mark A. Hindell
Light-level geolocators reveal migratory connectivity in European populations of pied flycatchers Ficedula hypoleuca
J. Ouwehand, M. P. Ahola, A. N. M. A. Ausems, E. S. Bridge, M. Burgess, S. Hahn, C. M. Hewson, R. H. G. Klaassen, T. Laaksonen, H. M. Lampe, W. Velmala and C. Both
While most people know the aboveground part of forest ecosystems, very few have caught a glimpse of the belowground environment that comprises a highly diverse fauna. The number of species co-occurring on less than a square meter habitat ground (or a cubic meter of habitat volume) exceeds that of the aboveground compartment by far. In consequence, forest soil communities have been called “poor man's rainforest”. Nevertheless, we still do not know much about the animals living in these “next-door” habitats and the structure of their communities.
Why is our knowledge about forest soil communities so limited? Progress in our understanding of soil communities and processes has been hampered by the chronic lack of data for complex soil food webs of high resolution. This is caused by aggregation of populations in coarse functional groups, whose species often span multiple trophic levels from primary to secondary or tertiary predators. In addition, soil is an opaque medium leading to a limited visibility of interactions. Further, detritivores typically ingest a multitude of intermingled resources hampering identification of what the animals actually digest and live on. In the recent years, new molecular methods have emerged providing the possibility to unravel belowground interactions and the complex structure of forest soil food webs.
The special issue “Into darkness” comprises several studies of central European beech forest soil communities. The studies included in this special feature fill employ state-of-the-art methods to unravel general feeding guilds by stable isotopes (Klarner et al.) as well as specific directed feeding interactions by molecular gut content and fatty-acid analyses (Ferlian and Scheu, Günther et al., Heidemann et al.). This allowed the construction of the first highly-resolved complex soil food webs (Digel et al.) and analyses how they respond to external drivers such as the nutrient stoichiometry of the basal litter (Ott et al.) and climate change (Lang et al.). Together, they provide a unique impression of a voyage into darkness.
Into darkness: unravelling the structure of soil food webs
Ulrich Brose and Stefan Scheu
Unravelling the complex structure of forest soil food webs: higher omnivory and more trophic levels
Christoph Digel, Alva Curtsdotter, Jens Riede, Bernhard Klarner and Ulrich Brose
Trophic shift of soil animal species with forest type as indicated by stable isotope analysis
Bernhard Klarner, Roswitha B. Ehnes, Georgia Erdmann, Bernhard Eitzinger, Melanie M. Pollierer, Mark Maraun and Stefan Scheu
Variations in prey consumption of centipede predators in forest soils as indicated by molecular gut content analysis
Babett Günther, Björn C. Rall, Olga Ferlian, Stefan Scheu and Bernhard Eitzinger
Free-living nematodes as prey for higher trophic levels of forest soil food webs
Kerstin Heidemann, Annika Hennies, Johanna Schakowske, Lars Blumenberg, Liliane Ruess, Stefan Scheu and Mark Maraun
Litter elemental stoichiometry and biomass densities of forest soil invertebrates
David Ott, Christoph Digel, Bernhard Klarner, Mark Maraun, Melanie Pollierer, Björn C. Rall, Stefan Scheu, Gesine Seelig and Ulrich Brose
Effects of environmental warming and drought on size-structured soil food webs
Birgit Lang, Björn C. Rall, Stefan Scheu and Ulrich Brose
The distribution of species in space and time is one of the oldest puzzles in ecology. Today we know of many factors that influence species' ranges. However, the ecological and evolutionary interactions of these factors, which ultimately shape the geographical distributions of species are still not comprehensively understood.
In this virtual special issue we aim at providing an overview of the different factors that influence dispersal evolution and species' ranges. These eco-evolutionary forces may act at all levels of biological organization, from genes to (meta-)communities.
The studies collected here highlight that the complexities and non-linearities, which arise from these interactions, challenge our understanding of abundances and distributions. Consequently, it is of great importance to keep in mind that species and their traits are constantly and maybe rapidly evolving and that a whole range of ecological and evolutionary forces influence where they are, and why. This awareness is central for conservation, management and any kind of predictive ecology, especially since our climate and environment at large is permanently changing.
Dispersal, evolution and range dynamics
Alexander Kubish and Emanuel A. Fronhofer
Where am I and why? Synthesizing range biology and the eco-evolutionary dynamics of dispersal
Alexander Kubisch, Robert D. Holt, Hans-Joachim Poethke and Emanuel A. Fronhofer
Exploring the difficulties of studying futures in ecology: what do ecological scientists think?
Audrey Coreau, Sébastien Treyer, Pierre-Olivier Cheptou, John D. Thompson and Laurent Mermet
Metapopulation dynamics across gradients – the relation between colonization and extinction in shaping the range edge
Beáta Oborny, Jeromos Vukov, Gábor Csányi and Géza Meszéna
A metapopulation model of species boundaries
J. J. Lennon, J. R. G. Turner and D. Connell
The dynamics of climate-induced range shifting; perspectives from simulation modelling
Karen Mustin, Tim G. Benton, Calvin Dytham and Justin M. J. Travis
Which species will succesfully track climate change? The influence of intraspecific competition and density dependent dispersal on range shifting dynamics
A. S. Best, K. Johst, T. Münkemüller and J. M. J. Travis
When range expansion rate is faster in marginal habitats
Reidar Andersen, Ivar Herfindel, Bernt-Erik Sæther, John D. C. Linnell, John Oddén and Olof Liberg
Interspecific interactions affect species and community responses to climate shifts
Alexander Singer, Justin M. J. Travis and Karin Johst
Can we disentangle predator–prey interactions from species distributions at a macro-scale? A case study with a raptor species
Aragón, P. and Sánchez-Fernández, D.
Limits to the niche and range margins of alien species
Alexander, J. M. and Edwards, P. J.
Edited by Randi Rotjan
The goal of a truly synthetic, cross-systems ecology has been often lauded but rarely implemented. Here, our authors have embraced the challenge to achieve synthesis via a multi-paper dialogue and we hope this format will act as a springboard for new ecological ideas, experiments and theories.
Surf and Turf: Toward better sythesis by cross-systems understanding
Randi D. Rotjan and Joshua Idjadi
Regional effects as important determinants of local diversity in both marine and terrestrial systems
Howard V. Cornell and Susan P. Harrison
Is dispersal limitation more prevalent in the ocean?
Diane S. Srivastava and Pavel Kratina
Green grass and high tides: grazing lawns in terrestrial and aquatic ecosystems (commentary on Burkepile 2013)
Daniel S. Gruner and Kailen A. Mooney
Re-examining the fundamentals of grazing: freshwater, marine and terrestrial similarities and contrasts (commentary on Burkepile 2013)
Raymond M. Newman and Randi D. Rotjan
Edited by Ben B. Chapman, Christer Brönmark, Jan-Åke Nilsson and Lars-Anders Hansson
Partial migration, where populations consist of both migratory and resident individuals, is widespread in nature and can have important ecological consequences. CAnMove, a VR-funded research constellation into the ecology and evolution of animal movement, recently hosted a symposium in partial migration at Lund University. From this meeting a number of original research articles were compiled to produce this thematic on partial migration, with the aim of synthesising ideas from a broad range of taxa and improving understanding of the causes and consequences of this phenomenon.
Partial migration: an introduction
Ben B. Chapman, Christer Brönmark, Jan-Åke Nilsson, and Lars-Anders Hansson
The ecology and evolution of partial migration
Ben B. Chapman, Christer Brönmark, Jan-Åke Nilsson, and Lars-Anders Hansson
Evolutionary genetics of partial migration – the threshold model of migration revis(it)ed
Basal metabolic rate and energetic cost of thermoregulation among migratory and resident blue tits
Anna L. K. Nilsson, Jan-Åke Nilsson and Thomas Alerstam
Partial migration in roe deer: migratory and resident tactics are end points of a behavioural gradient determined by ecological factors
Francesca Cagnacci, Stefano Focardi, Marco Heurich, Anja Stache et al.
Partial migration in expanding red deer populations at northern latitudes – a role for density dependence
Atle Mysterud, Leif Egil Loe, Barbara Zimmermann, Richard Bischof, Vebjørn Veiberg and Erling Meisingset
Interplay between temperature, fish partial migration and trophic dynamics
Jakob Brodersen, Alice Nicolle, P. Anders Nilsson, Christian Skov, Christer Brönmark and Lars-Anders Hansson
The equilibrium, population size of a partially migratory population and its response to environmental change
Cortland K. Griswold, Caz M. Taylor and D. Ryan Morris
Demographic balancing of migrant and resident elk in a partially migratory population through forage–predation tradeoffs
Mark Hebblewhite and Evelyn H. Merrill
To breed or not to breed: a model of partial migration
Allison K. Shaw and Simon A. Levin
Edited by Julia L. Blanchard, Andrea Belgrano, Bo Ebenman, Owen L. Petchey and F.J. Frank Van Veen
Body size influences many processes, ranging from individual biological rates up to the structure of food webs, resilience of ecosystems and their services. The ESF funded research network, SIZEMIC, has been synthesising ideas across pure and applied ecology and in both terrestrial and aquatic realms to improve understanding on the role of body size in ecosystems.
Body size and ecosystem dynamics: an introduction
Julia L. Blanchard
Taxonomic versus allometric constraints on non-linear interaction strengths
Björn Christian Rall, Gregor Kalinkat, David Ott, Olivera Vucic-Pestic and Ulrich Brose
The consequences of size dependent foraging for food web topology
Aaron Thierry, Owen L. Petchey, Andrew P. Beckerman, Philip H. Warren and Richard J Williams
Body sizes, cumulative and allometric degree distributions across natural food webs
Christoph Digel, Jens Riede and Ulrich Brose
Using sensitivity analysis to identify keystone species and keystone links in size-based food webs
Sofia Berg, Maria Christianou, Tomas Jonsson and Bo Ebenman
Body mass–abundance relationships are robust to cascading effects in marine food webs
Eoin J. O’Gorman and Mark C. Emmerson
How allometric scaling relates to soil abiotics
Christian Mulder, J. Arie Vonk, Henri A. Den Hollander, A. jan Hendriks and Anton M. Breure
The birds and the seas: body size reconciles differences in the abundance–occupancy relationship across marine and terrestrial vertebrates
Thomas J. Webb, Nicholas K. Dulvy, Simon Jennings and Nicholas V. C. Polunin
Across ecosystem comparisons of size structure: methods, approaches and prospects
Gabriel Yvon-Durocher, Julia Reiss, Julia Blanchard, Bo Ebenman, Daniel M. Perkins, Daniel C. Reuman, Aaron Thierry, Guy Woodward and Owen L. Petchey