David Wahl Ellie Broadman 20260211 spreadsheet Menlo Park, CA U.S. Geological Survey https://doi.org/10.5066/P90R7JEV Presence/absence data for Erodium pollen in a sediment core taken from the Morro Bay Salt Marsh. Data were collected to determine the earliest occurrence of Erodium pollen in the sediment core for the purpose of using it as a chronomarker. 20140202 20160630 ground condition Complete None planned -180.0000 180.0000 90.0000 -90.0000 ISO 19115 Topic Category biota USGS cores analyses pollen USGS Metadata Identifier USGS:6255b6d6d34e21f8276f49db Morro Bay Salt Marsh ITIS Erodium cicutarium Kingdom Plantae Subkingdom Viridiplantae Infrakingdom Streptophyta Superdivision Embryophyta Division Tracheophyta Subdivision Spermatophytina Class Magnoliopsida Superorder Rosanae Order Geraniales Family Geraniaceae Genus Erodium Stork's Bill Species Erodium cicutarium TSN: 29147 No access constraints. Please see 'Distribution Information' for details. These data are marked with a Creative Common CC0 1.0 Universal License. These data are in the public domain and do not have any use constraints. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. David Wahl US Geological Survey Research Geographer physical

350 N. Akron Rd.

MS-975

Moffett Field CA 94035 United States 650-439-2936 Ellie Broadman, University of Arizona No formal attribute accuracy tests were conducted No formal logical accuracy tests were conducted Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted Large (1.25–2.5 cm3) sediment samples were used for pollen extraction due to copious quantities of sand that required removal. Pollen extraction was completed using an adapted Faegri & Iverson (1989) technique. Sieving at 150 µm was completed between hydrofluoric acid treatments to remove sand, and multiple hydrofluoric acid treatments were completed to remove large amounts of silt and clay. Lycopodium tablets were added to each sample for pollen concentration calculations, and pollen residue was stained and mounted in silicon oil. If Erodium was not encountered on a slide, another one was prepared and scanned, if no Erodium on the second slide was found, a third was prepared and scanned. It no Erodium found on the third slide, it was determined to not be present 20160630 MBSM_Erodium_Pollen_Scans_post-review.xlsx (Erodium Pollen Scans) Excel Worksheet Producer Defined Composite Core Depth of Slides Scanned for Erodium Pollen The depth in the sediment core of slides scanned for Erodium pollen. Producer Defined 1.15 Composite core depth in meters below surface. Producer defined 1.19 Composite core depth in meters below surface. Producer defined 1.23 Composite core depth in meters below surface. Producer defined 1.27 Composite core depth in meters below surface. Producer defined 1.3 Composite core depth in meters below surface. Producer defined 1.32 Composite core depth in meters below surface. Producer defined 1.34 Composite core depth in meters below surface. Producer defined 1.35 Composite core depth in meters below surface. Producer defined 1.36 Composite core depth in meters below surface. Producer defined 1.37 Composite core depth in meters below surface. Producer defined 1.38 Composite core depth in meters below surface. Producer defined 1.39 Composite core depth in meters below surface. Producer defined 1.4 Composite core depth in meters below surface. Producer defined 1.41 Composite core depth in meters below surface. Producer defined 1.42 Composite core depth in meters below surface. Producer defined 1.43 Composite core depth in meters below surface. Producer defined 1.44 Composite core depth in meters below surface. Producer defined 1.45 Composite core depth in meters below surface. Producer defined 1.46 Composite core depth in meters below surface. Producer defined 1.47 Composite core depth in meters below surface. Producer defined << empty cell >> n/a Producer defined X = presence of Erodium pollen descriptive Producer defined Erodium Pollen Present An "X" in the Erodium Pollen Present column indicates the presence of Erodium Pollen at the associated depth Producer Defined Blank cells indicate no Erodium pollen present at the associated depth. Producer defined X An "X" in the Erodium Pollen Present column indicates the presence of Erodium Pollen at the associated depth Producer defined << empty cell >> Producer defined Producer Defined Producer Defined U.S. Geological Survey - ScienceBase mailing address

Denver Federal Center

Building 810

Mail Stop 302

Denver CO 80225 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Digital Data https://doi.org/10.5066/P90R7JEV None 20260211 David B Wahl USGS - SOUTHWEST REGION Research Geographer mailing and physical

NASA AMES-Moffett Field,Moffett Field - Building 19

Moffett Field CA 94035 650-439-2936 dwahl@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata FGDC-STD-001.1-1999