Ruthrauff, Daniel R. (ORCID: 0000-0003-1355-9156) 20190326 tabular digital data Anchorage, AK U.S. Geological Survey, Alaska Science Center Suggested Citation: Ruthrauff, D.R., 2019, Allometrics of Baltic Tellin (Macoma balthica) bivalves from Cook Inlet, AK, and Baie de Somme, France, 2010-2011: U.S. Geological Survey data release, https://doi.org/10.5066/P9PY1ULV https://doi.org/10.5066/P9PY1ULV This dataset contains two tables of sampling information and size and mass measurements of the Baltic Tellin (Macoma balthica) from sites in Cook Inlet, Alaska, USA, and the Baie de Somme estuary, France. To better understand environmental factors that support the nonbreeding ecology of Rock Sandpipers (Calidris ptilocnemis) in Cook Inlet, Alaska, we examined the relationship between the length and height of the hinge of the shell and relative masses of flesh in an important prey item, Macoma balthica. 20100309 20111128 observed Complete None planned Cook Inlet, Alaska, USA, and the Baie de Somme estuary, France. -151.3 1.6 60.4 50.2 USGS Metadata Identifier USGS:ASC204 ISO 19115 Topic Category Biota Environment NASA GMCD Earth Science Keywords Thesaurus Animals/vertebrates Birds Animals/invertebrates Mollusks Bivalves Clams Benthic Habitat Sandpipers USGS CSA Biocomplexity Thesaurus Marine mollusks Wildlife nutrition Body composition Trophic relationships USGS Thesaurus Field sampling Specimen collecting Estuarine ecosystems Laboratory methods Field sampling USGS Geographic Names Information System (GNIS) Alaska Kasilof River NGA GEOnet Names Server France Baie de Somme None Macoma balthica Limecola balthica ITIS Integrated Taxonomic Information System Unknown online database online ITIS-North America Taxonomic details retrieved March 13, 2019, from the Integrated Taxonomic Information System online database https://www.itis.gov https://doi.org/10.5066/F7KH0KBK At the time of this writing, some authorities had reclassified Macoma balthica as Limecola balthica. For lack of definitive taxonomic guidance, we retained the genus Macoma in this document, but recognize that the taxonomic status of the species is unresolved. Species were identified by skilled observers in the field based on general appearance of shell and benthic infaunal location. Taxonomy is completed for all samples. No voucher specimens were collected. Kingdom Animalia Subkingdom Bilateria Infrakingdom Protostomia Superphylum Lophozoa Phylum Mollusca Class Bivalvia Subclass Heterodonta Order Veneroida Superfamily Tellinoidea Family Tellinidae Genus Macoma Species Macoma balthica Baltic macoma TSN: 567846 No access constraints. No use constraints. These data are marked with a Creative Common CC0 1.0 Universal License and are in the public domain. It is requested that this USGS data release be cited for any subsequent publications that reference or utilize these data. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov NIOZ Royal Netherlands Institute for Sea Research provided financial support for collections in France and supported all laboratory analyses associated with these specimens. Ruthrauff, D.R. Dekinga, A. Gill, R.E., Jr. Piersma, T. 2018 journal article Ibis 160(2):397-412 online Wiley Ruthrauff, D.R., Dekinga, A., Gill, R.E., Piersma, T. 2018. Energetic solutions of Rock Sandpipers to harsh winter conditions rely on prey quality. Ibis 160(2):397-412. https://doi.org/10.1111/ibi.12534 https://doi.org/10.1111/ibi.12534 Ruthrauff, D.R. Dekinga, A. Gill, R.E., Jr. van Gils, J.A. Piersma, T. 2015 journal article Journal of Experimental Biology 218(8):1188-1197 online The Company of Biologists Ruthrauff, D.R., Dekinga, A., Gill, R.E., van Gils, J.A., Piersma, T. 2015. Ways to be different: foraging adaptations that facilitate higher intake rates in a northerly wintering shorebird compared with a low-latitude conspecific. Journal of Experimental Biology 218(8):1188-1197. https://doi.org/10.1242/jeb.108894 https://doi.org/10.1242/jeb.108894 Measurement values were transcribed and directly into electronic database and checked immediately. Cells for which a value was not recorded are empty. Values were within the anticipated range for the study species, and no outliers or erroneous measurements were identified. Note that the Macoma specimens used to determine ash-free dry mass as a function of shell length were not the same Macoma specimens used to determine shell-hinge heights as a function of shell length, and so the ID numbers of the Macoma are independent across these two datasets. In the 'quality' table, the empty mass of the crucibles was not recorded for Baie de Somme samples, so we were unable to determine the mass of the dry Macoma flesh ('Flesh') and the ashed Macoma flesh ('Ash'). These missing values are represented by empty cells. In the 'shellMeasurements' table, empty cells reflect instances where broken shells precluded us from obtaining shell length values. LAB: At both the Kasilof River, Alaska, site and the Baie de Some, France, site, Macoma balthica were collected by hand in sandy/muddy intertidal habitats. All specimens were stored alive in saltwater aquaria at the NIOZ Royal Netherlands Institue for Sea Research, and were maintained on a diet of spinach that had been dried and pulverized into a powder. The specimens were used as prey resources in experimental foraging trials on Rock Sandpipers (see linked citations), and specimens were sacrificed (frozen) upon completion of the foraging trials. To determine the ratio of ash-free dry mass to shell mass, Macoma specimens were first dessicated for 24 hours in a drying oven maintained at 60 degrees Celsius. Each Macoma was then placed in a crucible of known weight, and the sample was weighed. The sample was then incinerated for 2 hours at 550 degrees Celsius. Unknown Shells were removed and each was individually weighed. Flesh was dried and weighed, then combusted to ash in the oven and weighed again. From these three weights, we determined the ash-free dry mass (AFDM) of each Macoma as ((mass of dry flesh)-(mass of incinerated flesh)). 2011 To determine the relationship between the height of a Macoma's hinge and the length of the shell. We measured the height of the hinge on each half of each shell, and then the corresponding length of the shell itself along the long axis. We measured all hinges and shell lengths using a 10X dissecting scope equipped with digital measuring software (Leica Application Suite; Leica Microsystems, Wetzlar, Germany). 2014 LITERATURE CITED: Dekinga, A., Piersma, T. 1993. Reconstructing diet composition on the basis of faeces in a mollusc-eating wader, the Knot Calidris canutus. Bird Study 40(2):144-156. https://doi.org/10.1080/00063659309477140 2014 Sampling locations have been described by corresponding entries in the Geographic Names Information System (GNIS) and NGA GEOnet Names Server. 0.1 0.1 Decimal degrees World Geodetic System of 1984 World Geodetic System of 1984 6378137 298.257223563 macomaBalthica_quality_alaskaFrance_ruthrauff_2010_2011.csv Table of length and mass of Macoma balthica sampled in Alaska and France. Presented in a Comma Separated Value (CSV) formatted table. Author defined Location Broad location where bivalve specimen collected. Author defined Alaska Alaska, USA. USGS Geographic Names Information System France France NGIA GeoNames Server Site Location where specimen was collected. Author defined Kasilof Mouth of the Kasilof River, Alaska. (Latitude 60.4 N, Longitude 151.3 W) USGS Geographic Names Information System Baie_de_Somme Baie de Somme estuary, France. (Latitude 50.2 N, Longitude 1.6 E) NGIA GeoNames Server Date_collected Date specimen was collected in the field. Author defined 2010-03-09 2011-09-27 Date (YYYY-MM-DD) Date_sacrificed Date specimen was frozen (sacrificed) prior to analysis. Author defined 2010-03-31 2011-11-28 Date (YYYY-MM-DD) ID Unique identifier for each specimen. Author defined Values are a combination of Site (Kas=Kasilof, BdS= Baie de Somme) plus a number to create a unique identifier for each individual specimen. Length Length of shell,measured on the long axis. Author defined 5.52 20.07 millimeters Crucible_empty Mass of individual crucible used to ash sample. Not recorded from Baie de Somme samples, those cells have been left empty. Author defined 2.8199 4.3128 grams Crucible_Dry_Flesh Mass of crucible plus dried flesh (separated from shells of bivalve) following desiccation. Author defined 2.5454 4.6534 grams Crucible_Ashed_Flesh Mass of crucible and bivalve ash. The ash is the remains of the dried flesh after the sample was combusted. Author defined 2.5304 4.6513 grams Flesh Mass of dried flesh after desiccation. Only determined for Kasilof samples. An empty cell indicates the dried flesh mass was not determined for that individual. Author defined 0.0030 0.0856 grams Ash Mass of the ash remains of the dried flesh after the sample is combusted. Only determined for Kasilof samples. An empty cell indicates the ash mass was not determined for that individual. Author defined 0.0002 0.0480 grams Shell Mass of shell of specimen. An empty cell indicates the shell mass was not recorded for that individual. Author defined 0.0082 0.8814 grams AFDM Ash-free dry mass of specimen. This is the remainder of the dry mass (Flesh) minus the ash mass (Ash). Author defined 0.0009 0.0695 grams macomaBalthica_shellMeasurements_Alaska_ruthrauff_2011.csv Table of shell lengths and depths of Macoma balthica sampled in Alaska. Presented in a Comma Separated Value (CSV) formatted table. Author defined Location General location where bivalve specimen was collected. Author defined Alaska State of Alaska, USA. USGS Geographic Names Information System Site Location where specimen was collected. Author defined Kasilof Mouth of the Kasilof River, Alaska. (Latitude 60.4 N, Longitude 151.3 W) USGS Geographic Names Information System Date_collected Date specimen was collected in the field. Author defined 2011-09-27 2011-09-27 Date (YYYY-MM-DD) Macoma_ID Unique identifier for each bivalve specimen. Author defined Values are a combination of Site (Kas=Kasilof) plus a number to create a unique identifier for each individual bivalve specimen. Shell_ID Unique identifier for each of the two shells from each bivalve specimen. Author defined Values are a combination of Site (K=Kasilof) plus a number to create a unique identifier for each individual shell from each bivalve specimen. Hinge Height of the hinge on each shell; see Dekinga and Piersma (1993) for technique. Author defined 0.303 1.843 millimeters Length Length of shell, measured on the long axis (see Dekinga and Piersma 1993). An empty cell indicates the shell was damaged and so a length was not recorded for that individual. Author defined 5.080 19.764 millimeter U.S. Geological Survey USGS ScienceBase Team Mailing and Physical

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Denver Colorado 80225 USA 1-888-275-8747 sciencebase@usgs.gov The U.S. Geological Survey, Alaska Science Center is the authoritative source of these data, distributed by ScienceBase (a USGS Trusted Digital Repository). 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, no warranty expressed or implied is made regarding the display or utility of the data for other purposes or on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. CSV Tabular data in CSV format; FGDC metadata in XML and HTML formats. https://doi.org/10.5066/P9PY1ULV None 20250519 U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata (CSDGM) FGDC-STD-001.1-1999