Model for evaluating seabirds preferences for hake offal in Patagonia ...

• Main Author: Ojeda, Jaime
• Format: Dataset
• Language: English
• Published: Dryad 2024
• Subjects: FOS Agriculture, forestry, and fisheries; Hake fishery; nature's contributions to nature; Patagonia; Hake; Giant Petrels
• Online Access: https://dx.doi.org/10.5061/dryad.ngf1vhj3r; https://datadryad.org/stash/dataset/doi:10.5061/dryad.ngf1vhj3r

This data set was used to build a model to evaluate the seabirds' preferences for hake offal derived from an artisanal fishery in Patagonia. Main results are: The fishers’ main contribution to seabirds is through offering them the offal of hake catches. We observed that seabirds consumed hake liver 99% of the time, while they consumed stomach less frequently (24%). We identified that southern giant petrels and black-browed albatrosses consumed more liver, while kelp gulls ate more stomach. The liver comprises 51.6% fat, essential for high trophic level marine predators such as black-browed albatrosses. ... : # Model for evaluating seabirds preferences for hake offal in Patagonia [Access this dataset on Dryad]([https://doi.org/10.5061/dryad.ngf1vhj3r]\(https://doi.org/10.5061/dryad.ngf1vhj3r\)) ## Dataset Description We investigated the probability of the seabird assemblage consumption on specific hake offal items, such as the gonad, liver, and stomach. For this study, we defined a seabird assemblage attending a fishing boat in a single sampling period as the total number of taxonomic seabird species, including their abundances. In each sampling period, we randomly threw the offal items one by one from the boat into the sea. Consumption was categorized as “0” if no seabirds consumed an item and “1” if one or more seabirds consumed an offal item. We conducted twenty-four sampling periods, totaling 1298 observations of item consumption. The binomial positive or null “offal consumption by seabirds” served as our response variable, and the explanatory variables included ‘types of offal’ (fixed factor), ‘seasons’ ...