Data from: Context-dependent costs and benefits of a heterospecific nesting association ...
The costs and benefits of interactions among species can vary spatially or temporally, making them context-dependent. For example, benefits associated with nesting near species that deter predators may give way to costs if the association increases the risk of predation during other stages of reprod...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2018
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.m8s2r36 https://datadryad.org/stash/dataset/doi:10.5061/dryad.m8s2r36 |
| Summary: | The costs and benefits of interactions among species can vary spatially or temporally, making them context-dependent. For example, benefits associated with nesting near species that deter predators may give way to costs if the association increases the risk of predation during other stages of reproduction. We examined the extent to which the costs and benefits of heterospecific aggregations between a declining shorebird, the Hudsonian Godwit (Limosa haemastica), and a potential protector and predator, the Mew Gull (Larus canus), varied with breeding stage. Specifically, we assessed the spatial distribution and fate of 43 godwit and 262 gull nests in Beluga, Alaska, from 2014 – 2016. We then evaluated the effect of habitat and proximity to gulls on daily survival rates of 120 godwit nests from 2009 – 2016. We also examined the relationship between the proximity to gulls and survival of godwit chicks to five days old, the period when they are vulnerable to gull predation. Nests of godwits and gulls were ... : Nest Locations for Hudsonian Godwits and Mew GullsNest locations (Latitude & Longitude, Easting & Northing both given) for two species (SPP: Hudsonian Godwit (HUGO) and Mew Gull (MEGU)) from 2009-2016 (godwits) and 2014-2016 (gulls) in Beluga River, AK. Godwit nest fate (HATCH = nest successfully hatched, FAIL = nest did not hatch - usually predated) is also included.NorthPlot_Nests_HUGO_MEGU.csvHudsonian Godwit nest survival 2009-2016Hudsonian Godwit nest survival from 2009-2016. Data is organized for analysis in program MARK. Individual covariates: DIST_MEGUCOLONY: distance to the gull colony; DIST_H20: distance to pond; PER_30CM_1M: percent vegetation between 30cm and 1m tall; PER_BARE: percent circle bare ground (e.g., mud, water, or rocks); PER_SEDGE_GRASS: percent circle covered by grass and sedge species; PER_FORB: percent circle covered by herbaceous forb species; NUM_SPECIES: number of plant species within circle. All vegetation metrics taken within a 1m diameter circle-plot at ... |
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