No state change in pelagic fish production and biodiversity during the Eocene-Oligocene Transition
Data files
Mar 02, 2020 version files 1.40 GB
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Ichthyolith_Image_Data.zip
1.40 GB
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README.txt
3.80 KB
Abstract
README for Data Archive for:
Pelagic fish production and diversity unchanging across the Eocene-Oligocene Glaciation
Elizabeth C Sibert, Michelle E Zill, Ella T. Frigyik, and Richard D Norris
Contact: Elizabeth Sibert (esibert@fas.harvard.edu) *Email address will be updated at a future time
This dataset consists of images of each unique ocean drilling sample considered in this study.
There are two sites included in this study: DSDP Site 596 and ODP Site 689.
They were imaged at different times and on different instruments, however the data are functionally equivilant.
File Name information:
ODP Site 689: Filenames take the form:
SiteNumber_SlideNumber_SampleNumber_IODP-Core_IODP-Section_IODP-SampleDepthInterval_HoleNumber_ZoomLevel
ODP-689B ANT01 001 10H 1W 10-13cm N1of2 z200x
Imaged on a Keyence Digital Microscope System at Harvard University, using the Museum of Comparative Zoology's Digital Imaging Facilities
Tooth IDs are in Table S20 from supplemental Dataset Excel spreadsheet
DSDP Site 596: Filenames take the form:
SiteNumber-SlideNumber-SampleNumber_IODP-Core_IODP-Section_IODP-SampleDepthInterval_SizeFraction_SlideType_HoleNumber_MicroscopeSettings_ImageType_ZoomLens
DSDP-596 P031 M20 2H 5W 116-118cm g106 Hwell N1of1 Mcompount_Oflat_I1 TzEDF-0 X5
Imaged on a Leica Microscope automated imaging system in the Pincelli Hull Laboratory at Yale University.
Tooth IDs are in Table S19 from supplemental Dataset Excel spreadsheet
SiteNumber - ODP-689B is consistent throughout
SlideNumber - an internal numbering system to identify which physical four-hole micropaleontology slide the sample is archived on
SampleNumber - An internal serial numbering to aid in identification of specific samples. (Multiple samples are often archived on the same slide, but in different holes)
IODP-Core, IODP-Setion, and IODP-SampleDepthInterval - External unique IODP Sample identifier information identifying precisely what depth in the hole hte sample is from.
HoleNumber - Some samples have multiple holes on the slide designated to them, this identifies which hole was imaged.
Throughout this project, only teeth >63um were identified, so all hole numbers are N1of2; N2of2 is reserved for teeth <63um, which were not included in this study.
ZoomLevel - refers to the zoom lens reading on the Keyence microscope; unique to ODP 689; 0.95 um/pixel
SizeFraction - unique to DSDP 596, this is objects >106um
SlideType - unique to DSDP 596, Hwell refers to "4-well slide"
MicroscopeSettings - unique to DSDP 596, refers to the microscope used to image the objects, a piece of metadata included by this imaging system
ImageType - TzEDF refers to "extended depth of focus" - while this is unique to DSDP 596 filenames, all images included in this study are extended depth of focus images
ZoomLens - Refers to the lens used on the Leica microscope; Unique to DSDP 596; 0.98 um/pixel
For each sample, we include the following:
1) A full-slide, medium-resolution image of all microfossils found in the discrete sediment sample,
with red "segment" boxes around each object found by our microfossil image-segmenting software
2) "Segmented" images (directory name is 'focused') at full-resolution. Note that for many of these
samples, there are a number of identified 'segmented' boxes that are not of teeth, but which
picked up reflections from the slides or other imperfections. We have included these images for
transparency. We have also included the images of shark denticles, which were included in the
total ichthyolith counts, but not identified to morphotype or included in diversity analyses.