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&amp;lt;p&amp;gt;Known Issues: No oxygen data was collected for profiles 1-7. This also prohibits the calculation of alkalinity profiles.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Methods described in detail in Ninokawa et al. (2020).&amp;lt;/p&amp;gt;</gco:CharacterString>
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The absorption of human-produced carbon dioxide into the world's oceans is altering the chemistry of seawater, including decreasing its pH. Such changes, collectively called &quot;ocean acidification&quot;, are expected to influence numerous types of sea creatures. This project examines how shifts in ocean pH affect animal behavior and thus interactions among species. It uses a case study system that involves sea star predators, snail grazers that they eat, and seaweeds consumed by the latter. The rocky-shore habitats where these organisms live have a long history of attention, and new findings from this work will further extend an already-large body of marine ecological knowledge. The project provides support for graduate and undergraduate students, including underrepresented students from a nearby community college. The project underpins the development of a new educational module for local K-12 schools. Findings will moreover be communicated to the public through the use of short film documentaries, as well as through established relationships with policy, management, and industry groups, and contacts with the media.&lt;/p&gt;
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                <gco:CharacterString>&amp;lt;p&amp;gt;These data were generated by establishing a mussel bed in a laboratory flow tunnel. Each profile represents a period where chemistry (pH and O2) was measured at defined heights within and above the mussel bed. These profiles occurred at two places in the mussel bed. Alkalinity at the top of each profile was determined with bottle samples and interpolated to each time point. Alkalinity profiles were generated by calculating the change in alkalinity using the pH and O2 profiles. These chemical profiles were used to calculate calcification and respiration rates of the mussel bed.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Known Issues: No oxygen data was collected for profiles 1-7. This also prohibits the calculation of alkalinity profiles.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Methods described in detail in Ninokawa et al. (2020).&amp;lt;/p&amp;gt;</gco:CharacterString>
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                <gco:CharacterString>&amp;lt;p&amp;gt;Data Processing:&amp;lt;br /&amp;gt;
All data analyses were performed with R Statistical Software. The seacarb package was used for carbonate chemistry calculations and the marelac package was used for estimating oxygen flux out of the surface of the flow tunnel.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;BCO-DMO Processing:&amp;lt;br /&amp;gt;
- Adjusted field/parameter names to comply with BCO-DMO naming conventions&amp;lt;br /&amp;gt;
- Missing data identifier ‘NA’ replaced with 'nd' (BCO-DMO's default missing data identifier)&amp;lt;br /&amp;gt;
- Converted date/time field to ISO8601 format (YYYY-MM-DDThh:mm)&amp;lt;br /&amp;gt;
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- Added a conventional header with dataset name, PI names, version date&amp;lt;/p&amp;gt;</gco:CharacterString>
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				    <gco:CharacterString>Woods Hole</gco:CharacterString>
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                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/405.rdf" xlink:title="Acoustic Doppler Current Profiler" xlink:actuate="onRequest">Nortek acoustic doppler profiler</gmx:Anchor>
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            <gco:CharacterString>PI Supplied Instrument Name: Nortek acoustic doppler profiler PI Supplied Instrument Description:Freestream velocity and u* were extracted from velocity profiles. A relationship between flow tunnel speed setting and freestream velocity and u* was used during period the ADP lacked sufficient particles in the water for accurate velocity measurements. Instrument Name: Acoustic Doppler Current Profiler Instrument Short Name:ADCP   Instrument Description: The ADCP measures water currents with sound, using a principle of sound waves called the Doppler effect. A sound wave has a higher frequency, or pitch, when it moves to you than when it moves away. You hear the Doppler effect in action when a car speeds past with a characteristic building of sound that fades when the car passes. The ADCP works by transmitting &quot;pings&quot; of sound at a constant frequency into the water. (The pings are so highly pitched that humans and even dolphins can't hear them.) As the sound waves travel, they ricochet off particles suspended in the moving water, and reflect back to the instrument. Due to the Doppler effect, sound waves bounced back from a particle moving away from the profiler have a slightly lowered frequency when they return. Particles moving toward the instrument send back higher frequency waves. The difference in frequency between the waves the profiler sends out and the waves it receives is called the Doppler shift. The instrument uses this shift to calculate how fast the particle and the water around it are moving. Sound waves that hit particles far from the profiler take longer to come back than waves that strike close by. By measuring the time it takes for the waves to bounce back and the Doppler shift, the profiler can measure current speed at many different depths with each series of pings. (More from WHOI instruments listing). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/115/</gco:CharacterString>
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                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/701.rdf" xlink:title="Oxygen Microelectrode Sensor" xlink:actuate="onRequest">Presens Microx 4 Profiling O2 and temperature sensor</gmx:Anchor>
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                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/674.rdf" xlink:title="pH Sensor" xlink:actuate="onRequest">Honeywell Durafet III combination electrode</gmx:Anchor>
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            <gco:CharacterString>PI Supplied Instrument Name: Honeywell Durafet III combination electrode PI Supplied Instrument Description:Top pH sensor: Honeywell Durafet III combination electrode calibrated to total scale with spectrophotometric pH determination on discrete water samples
Profiling pH sensor: Honeywell Durafet III combination electrode calibrated to total scale by holding adjacent to the top pH sensor Instrument Name: pH Sensor Instrument Short Name:pH Sensor   Instrument Description: An instrument that measures the hydrogen ion activity in solutions.

The overall concentration of hydrogen ions is inversely related to its pH.  The pH scale ranges from 0 to 14 and indicates whether acidic (more H+) or basic (less H+). </gco:CharacterString>
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                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/663.rdf" xlink:title="YSI Sonde 6-Series" xlink:actuate="onRequest">Yellow Springs Instruments 6920 Multiparameter Sonde.</gmx:Anchor>
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            <gco:CharacterString>Yellow Springs Instruments 6920 Multiparameter Sonde.</gco:CharacterString>
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            <gco:CharacterString>PI Supplied Instrument Name: Yellow Springs Instruments 6920 Multiparameter Sonde. PI Supplied Instrument Description:Top O2, salinity, and temperature sensor: Yellow Springs Instruments 6920 Multiparameter Sonde. O2 calibrated by holding adjacent to the profiling O2 sensor. Salinity calibrated with YSI 50 uS/cm Conductivity Standard. Temperature calibrated by manufacturer. Instrument Name: YSI Sonde 6-Series Instrument Short Name:YSI Sonde 6-Series   Instrument Description: YSI 6-Series water quality sondes and sensors are instruments for environmental monitoring and long-term deployments. YSI datasondes accept multiple water quality sensors (i.e., they are multiparameter sondes). Sondes can measure temperature, conductivity, dissolved oxygen, depth, turbidity, and other water quality parameters. The 6-Series includes several models. More from YSI. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0737/</gco:CharacterString>
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