Data from: Individual, population, and ecosystem effects of hypoxia on a dominant benthic bivalve in Chesapeake Bay

Long WC, Seitz RD, Brylawski BJ, Lipcius RN

Date Published: September 6, 2013

DOI: http://dx.doi.org/10.5061/dryad.c45f0

 

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Title Sites and physical measurements 2003
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Description GPS coordinates and measurements of dissolved oxygen, temperature, and salinity taken during field surveys in the York and Rappahannock Rivers, VA, in 2003.
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Title Sites and physical measurements 2004
Downloaded 1 time
Description GPS coordinates and measurements of dissolved oxygen, temperature, and salinity taken during field surveys in the York and Rappahannock Rivers, VA, in 2003.
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Title Field predation and non-predatory mortality rates
Description Calculated predation rates from a caging study on Macoma balthica in the York River in 2006. Rates were calculated based on the number of marked clams recovered after approximately 4 weeks exposure time. Non-predatory mortality rates were based on the recovery of marked dead clams (i.e. undamaged shells). The major predator on M. balthica in this system is the blue crab Callinectes sapidus.
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Title Field predation experiment DO Datasond
Description This file contains the measurements of dissolved oxygen (DO) in mg O2/L recorded by a Hydrolab DS5X with a luminescent DO probe (Hach Environmental, Loveland, CO) at a single deep site during the predation experiment in the York River in 2006. Date/time represents the data and time (EST) of each measurement.
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Download Field predation experiment DO Datasond.csv (246.3 Kb)
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Title Field predation sites and physical measurements
Description This file contains the measurements of dissolved oxygen (DO) in mg O2/L at each site during the predation experiment using an YSI 85. Date represents the date of each measurement. Latitude and longitude are in decimal degrees. Temperatures are in degrees Celsius, salinity in practical salinity units (psu) and dissolved oxygen (DO) in mg O2/L.
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Title Lab experiment DO and temp
Description This file contains the measurements of dissolved oxygen (DO) and temperature in tanks during a laboratory experiment examining the effects of low DO on the clam Macoma balthica. Treatment represents the nominal dissolved oxygen (mg O2/L) treatment group. Replicate represents the replicate tank number. DO is in mg O2/L) and temperature is in degrees Celsius. The date is the date of each measurement and time is approximate time in EST.
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Title Macoma balthica densities
Description This file contains the average Macoma balthica densities at each site sampled in box cores during the field surveys in 2003-2004. The minimum summer DO represents the minimum dissolved oxygen concentration (mg O2/L) observed at each site during that year. River is represent the river the sample was taken in, Date the day the sample was taken, and Site the nominal site at which the sample was taken. Note that sites changed location between years, (i.e. site M2 in 2003 in the York was at a different location than site M2 in 2004). Site location and raw DO measurements are available in the Sites and physical measurements files.
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Title Macoma balthica lengths and masses
Downloaded 1 time
Description This file contains the average Macoma balthica shell lengths in mm and ash free dry masses (AFDM) in mg at each site sampled during the field surveys 2004. River represents the river the sample was taken in, Site represents the site name, Date represents the date the sample was taken. The average summer DO represents the average dissolved oxygen concentration (mg O2/L) observed at each site during that summer. Site locations and raw DO measurements are available in the Sites and physical measurements 2004 file.
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Title Macoma balthica recruits
Description This file contains the Macoma balthica recruit (shell length < 3 mm) densities at each site sampled during the field survey in the Rappahannock River in Feb. 2004. River represents the river the sample was taken in; Site represents the site name; Date represents the date the sample was taken. The minimum summer DO represents the minimum dissolved oxygen concentration (mg O2/L) observed at each site during that year. Site location and raw DO measurements are available in the Sites and physical measurements files.
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Title Macoma balthica shell lengths
Description This file contains the Macoma balthica shell lengths (in mm) at each site sampled during the field surveys 2004. River represents the river the sample was taken in, Site represents the site name, Date represents the date the sample was taken. The average summer DO represents the average dissolved oxygen concentration (mg O2/L) observed at each site during that summer. Site location and raw DO measurements are available in the Sites and physical measurements files.
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Download README.txt (870 bytes)
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Title Macoma balthica survival
Description This file contains the average Macoma balthica survival at each site sampled during the field survey in 2004. Survival is calculated as the average density in the fall sampling divided by the average sampling in the spring at each site. River represents the river the sample was taken in, Site represents the site name, Date represents the date the sample was taken. The average DO represents the average dissolved oxygen concentration (mg O2/L) during the summer months observed at each site during that year. Site locations and raw DO measurements are available in the Sites and physical measurements files, and the raw densities are available in the Macoma balthica densities file.
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Download README.txt (1.084 Kb)
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Title mb-HSP70 and fecundity
Description This file contains the measurements units mb-HSP70/clam and the number of eggs/clam in the laboratory experiment. Examining the effects of dissolved oxygen on Macoma balthica. Mb-HSP70 is a protein expressed in Macoma balthica. Eggs/clam could only be calculated for the > 4.0 mg/L treatment, and the < 2.0 mg/L treatment; blank indicate no data is available. Treatment represents the nominal dissolved oxygen (mg O2/L) treatment group. Replicate represents the replicate tank number within each treatment.
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Title mb-HSP70 and protein in eggs
Description This file contains the measurement of units mb-HSP70/egg and the µg protein/egg in a laboratory experiment on the effects of dissolved oxygen on Macoma balthica. Mb-HSP70 is a protein expressed in Macoma balthica eggs. Treatment represents the nominal dissolved oxygen (mg O2/L) treatment group. Clam represents the replicate clam number.
Download mb-HSP70 and protein in eggs.csv (509 bytes)
Download README.txt (742 bytes)
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When using this data, please cite the original publication:

Long WC, Seitz RD, Brylawski BJ, Lipcius RN (2013) Individual, population, and ecosystem effects of hypoxia on a dominant benthic bivalve in Chesapeake Bay. Ecological Monographs 84(2): 303-327. http://dx.doi.org/10.1890/13-0440.1

Additionally, please cite the Dryad data package:

Long WC, Seitz RD, Brylawski BJ, Lipcius RN (2013) Data from: Individual, population, and ecosystem effects of hypoxia on a dominant benthic bivalve in Chesapeake Bay. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.c45f0
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