Data from: Population variation in density-dependent growth, mortality and their trade-off in a stream fish ...
Important variation in the shape and strength of density-dependent growth and mortality is observed across animal populations. Understanding this population variation is critical for predicting density-dependent relationships in natural populations, but comparisons among studies are challenging as s...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2019
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.573n5tb3h https://datadryad.org/stash/dataset/doi:10.5061/dryad.573n5tb3h |
| Summary: | Important variation in the shape and strength of density-dependent growth and mortality is observed across animal populations. Understanding this population variation is critical for predicting density-dependent relationships in natural populations, but comparisons among studies are challenging as studies differ in methodologies and in local environmental conditions. Consequently, it is unclear whether: (1) the shape and strength of density-dependent growth and mortality are population-specific; (2) the potential trade-off between density-dependent growth and mortality differs among populations; and (3) environmental characteristics can be related to population differences in density-dependent relationships. To elucidate these uncertainties, we manipulated the density (0.3-7 fish/m2) of young-of-the-year brook trout (Salvelinus fontinalis) simultaneously in three neighboring populations in a field experiment in Newfoundland, Canada. Within each population, our experiment included both spatial (three sites ... : Variables Section: 4 digit code for the experimental section (first two letters are the stream, the third letter is the site within stream and the last number is the section within site, e.g. BC-A-1 is located in site A in Bob’s Cove, and is the first section). Length.initial: Average length of fish (mm) at the start of the experiment Density: Fish density, in meter square Abundance: number of fish stocked Start.date (start date, YYYY-MM-DD) Finish.date (finish date, YYYY-MM-DD) Length.final: Average length of fish (mm) at the end of the experiment Abundance.final: Abundance at the end of the experiment Duration: duration of the experiment, in days Sp.Growth: Specific growth (% of length/day) Daily.Mortality: daily mortality (%/day) Temperature: average temperature of a given section in degrees Celsius pH: average pH of a given section Width: average width of a section (m Boulder: prevalence of boulders in the section (%) Cobble: prevalence of cobble in the section (%) Pebble: prevalence of pebbles in the ... |
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