Data from: Modelled drift patterns of fish larvae link coastal morphology to seabird colony distribution
Colonial breeding is an evolutionary puzzle, as the benefits of breeding in high densities are still not fully explained. Although the dynamics of existing colonies are increasingly understood, few studies have addressed the initial formation of colonies, and empirical tests are rare. Using a high-r...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Dataset |
| Language: | unknown |
| Published: |
2017
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| Subjects: | |
| Online Access: | https://zenodo.org/record/4967994 https://doi.org/10.5061/dryad.3jr62 |
| Summary: | Colonial breeding is an evolutionary puzzle, as the benefits of breeding in high densities are still not fully explained. Although the dynamics of existing colonies are increasingly understood, few studies have addressed the initial formation of colonies, and empirical tests are rare. Using a high-resolution larval drift model, we here document that the distribution of seabird colonies along the Norwegian coast can be explained by variations in the availability and predictability of fish larvae. The modelled variability in concentration of fish larvae is, in turn, predicted by the topography of the continental shelf and coastline. The advection of fish larvae along the coast translates small-scale topographic characteristics into a macroecological pattern, viz. the spatial distribution of top-predator breeding sites. Our findings provide empirical corroboration of the hypothesis that seabird colonies are founded in locations that minimise travel distances between breeding and foraging locations, thereby enabling optimal foraging by central-place foragers. Grid cell characteristicsDescription of the characteristics of the coastal grid cells used in simulationsgridcell.csvGeneric particle abundancesGridded spatial data of particle abundances according to the generic larval drift modelgeneric.csvCod larvae abundancesGridded spatial data of abundances of Northeast Arctic cod eggs and larvae according to the larval drift modelcod.csvHerring larvae abundancesGridded spatial data of abundances of Norwegian spring-spawning herring larvae according to the larval drift modelherring.csv |
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