6 Works

Data from: Identifying the African wintering grounds of hybrid flycatchers using a multi–isotope (δ2H, δ13C, δ15N) assignment approach

Thor Veen, Mårten B. Hjernquist, Steven L. Van Wilgenburg, Keith A. Hobson, Eelke Folmer, Laura Font & Marcel Klaassen
Migratory routes and wintering grounds can have important fitness consequences, which can lead to divergent selection on populations or taxa differing in their migratory itinerary. Collared (Ficedula albicollis) and pied (F. hypoleuca) flycatchers breeding in Europe and wintering in different sub-Saharan regions have distinct migratory routes on the eastern and western sides of the Sahara desert, respectively. In an earlier paper, we showed that hybrids of the two species did not incur reduced winter survival,...

Data from: Field measurements give biased estimates of functional response parameters, but help explain foraging distributions

Sjoerd Duijns, Ineke E. Knot, Theunis Piersma & Jan A. Van Gils
1. Mechanistic insights and predictive understanding of the spatial distributions of foragers are typically derived by fitting either field measurements on intake rates and food abundance, or observations from controlled experiments, to functional response models. It has remained unclear, however, whether and why one approach should be favoured above the other, as direct comparative studies are rare. 2. The field measurements required to parameterize either single or multi-species functional response models are relatively easy to...

Data from: Personality drives physiological adjustments and is not related to survival

Allert I. Bijleveld, Georgina Massourakis, Annemarie Van Der Marel, Anne Dekinga, Bernard Spaans, Jan A. Van Gils & Theunis Piersma
The evolutionary function and maintenance of variation in animal personality is still under debate. Variation in the size of metabolic organs has recently been suggested to cause and maintain variation in personality. Here, we examine two main underlying notions: (i) that organ sizes vary consistently between individuals and cause consistent behavioural patterns, and (ii) that a more exploratory personality is associated with reduced survival. Exploratory behaviour of captive red knots (Calidris canutus, a migrant shorebird)...

Data from: Moving on with foraging theory: incorporating movement decisions into the functional response of a gregarious shorebird

Jan A. Van Gils, Matthijs Van Der Geest, Brecht De Meulenaer, Hanneke Gillis, Theunis Piersma & Eelke O. Folmer
1. Models relating intake rate to food abundance and competitor densities (generalized functional response models) can predict forager distributions and movements between patches, but we lack understanding of how distributions and small-scale movements by the foragers themselves affect intake rates. 2. Using a state-of-the-art approach based on continuous-time Markov chain dynamics, we add realism to classic functional response models by acknowledging that the chances to encounter food and competitors are influenced by movement decisions, and,...

Data from: Drivers shaping the diversity and biogeography of total and active bacterial communities in the South China Sea

Yao Zhang, Zihao Zhao, Minhan Dai, Nianzhi Jiao & Gerhard J. Herndl
To test the hypothesis that different drivers shape the diversity and biogeography of the total and active bacterial community, we examined the bacterial community composition along two transects, one from the inner Pearl River estuary to the open waters of the South China Sea (SCS) and the other from the Luzon Strait to the SCS basin, using 454 pyrosequencing of the 16S rRNA and 16S rRNA gene (V1-3 regions) and thereby, characterizing the active and...

Data from: Sex-specific winter distribution in a sexually dimorphic shorebird is explained by resource partitioning

Sjoerd Duijns, Jan A. Van Gils, Bernard Spaans, Job Ten Horn, Maarten Brugge & Theunis Piersma
Sexual size dimorphism (SSD) implies correlated differences in energetic requirements and feeding opportunities, such that sexes will face different trade-offs in habitat selection. In seasonal migrants, this could result in a differential spatial distribution across the wintering range. To identify the ecological causes of sexual spatial segregation, we studied a sexually dimorphic shorebird, the bar-tailed godwit Limosa lapponica, in which females have a larger body and a longer bill than males. With respect to the...

Registration Year

  • 2014
    6

Resource Types

  • Dataset
    6

Affiliations

  • Royal Netherlands Institute for Sea Research
    6
  • University of Groningen
    4
  • VU University Amsterdam
    1
  • Xiamen University
    1
  • Nederlands Instituut voor Ecologie
    1
  • Environment Canada
    1
  • Deakin University
    1
  • University of Vienna
    1
  • University of British Columbia
    1
  • Uppsala University
    1