Fishing Out Nutrients - Nutrient Extraction Data

Overview

This repository contains the extraction estimate distributions for the manuscript 'Fisheries disrupt marine nutrient cycles through biomass extraction' by González Ortiz et al. (in review). The analysis was conducted in R and the associated code can be found at the following GitHub repository: https://github.com/FishyAdrian/Fishing_Out_Nutrients.

Extraction Estimates

• Total catches (tonnes year⁻¹) for each species and taxonomic group caught in an EEZ or high seas region between 1960 and 2018 resulted in a dataset of over 6.7 million entries.
• For each entry, 100 random nutrient composition values were sampled from a normal distribution based on species/taxonomic group means and standard deviations. These values were multiplied by the total landed amount to generate 100 nutrient extraction estimates per entry.
• Mean extraction values for carbon (C), nitrogen (N), and phosphorus (P) were calculated, along with standard deviations and 95% confidence intervals.
• The full distribution matrices of extraction estimates are found as a zipped 7z folder in this repository. This zipped folder contains three CSVs, one for each nutrient (C, N, and P).
• The Fisheries_NutrientExtraction_index CSV file contains the identifying information for each row of the fisheries dataset which the distribution matrices are based on. Each row in the Fisheries_NutrientExtraction_index CSV corresponds to that same row in each of the nutrient extraciton distributions CSVs.

Citation

If you use this data, please cite this Figshare repository and the original manuscript once published.

Contact

Please contact Adrian Gonzalez Ortiz (adgon@umich.edu) for questions regarding the data.