Data from: Nineteenth-century collapse of a benthic marine ecosystem on the open continental shelf

Tomašových A, Kidwell SM

Date Published: June 2, 2017

DOI: http://dx.doi.org/10.5061/dryad.0r76j.2

 

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Title Table-spatial distribution of Laques erythraeus, Leopecten diegensis and Chlamys hastata
Downloaded 11 times
Description Occurrences of Laques erythraeus, Leopecten diegensis and Chlamys hastata in living (Live) and death (Dead) assemblages, with latitude, longitude, water depth (m), year of sampling (NA if unknown) and sampling gear. Some data refer to presence-absence data (0-absent, 1-present) and some to abundance data (column Data). Occurrences are partitioned into mainland-shelf and island-shelf occurrences (column Shelf.island). Some occurrences are based on photographic surveys. The column "Survey" refers to monitoring of wastewater agencies (LA City, LA County, Orange County, Point Loma, and South Bay), to Bight-wide surveys, to photographic USGS surveys, or Melville 2012 survey (performed by authors of this study).
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Title Table-ages
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Description Summary of radiocarbon-calibrated shell ages of Laqueus erythraeus estimated by amino-acid racemization (with 95% confidence intervals on the mean age), with water depth (m), sampling year, and D/L of Aspartic and Glutamic acids.
Download Table-ages.xls (64.51 Kb)
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Title Tomasovych and Kidwell supplement R code
Downloaded 4 times
Description Source code for evaluating the postmortem age-fequency distribution of the brachiopod Laqueus erythraeus from the Southern California Bight written in R language. Postmortem age estimates based on the Bayesian fitting of Allen et al. (2013) are assigned to a vector directly in this code. The code recreates the figures where the estimates of shell loss from the mixed layer are based on the fitting of the age-frequency distribution to two-phase exponential models, and these estimates are used to reconstruct the trajectory of production.
Download Laqueus postmortem age analyses.txt (19.71 Kb)
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When using this data, please cite the original publication:

Tomašových A, Kidwell SM (2017) Nineteenth-century collapse of a benthic marine ecosystem on the open continental shelf. Proceedings of the Royal Society B 284(1856): 20170328. http://dx.doi.org/10.1098/rspb.2017.0328

Additionally, please cite the Dryad data package:

Tomašových A, Kidwell SM (2017) Data from: Nineteenth-century collapse of a benthic marine ecosystem on the open continental shelf. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.0r76j.2
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