| Contributors | Affiliation | Role |
|---|---|---|
| Yund, Philip O. | University of New England - Marine Science Center (UNE-MSC) | Principal Investigator |
| Tilburg, Charles E. | University of New England - Marine Science Center (UNE-MSC) | Co-Principal Investigator, Contact |
| Gegg, Stephen R. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Multiple year CTD Profile Data - Binned Downcasts
Resolution
Temperature – 0.0001C
Salinity – 0.4 ppm
Pressure – 0.002% of full scale range (7000 m)
Fluorescence CDOM – 0.09 ppb
Fluorescence ECO-AFL – 0.01ug/l
Oxygen Saturation – 2% of saturation
PAR/Irradiance – 5%
Sampling and Analytical Methodology:
Samples were taken using a Sea-Bird SBE19plus.
* InstrumentState
* HardwareData DeviceType='SBE19plus' SerialNumber='01906084'
* Manufacturer Sea-Bird Electronics, Inc. Manufacturer
* FirmwareVersion 2.0c FirmwareVersion
* FirmwareDate 20 February 2008 14:10 FirmwareDate
* PCBAssembly PCBSerialNum='not assigned' AssemblyNum='41054F'
* PCBAssembly PCBSerialNum='not assigned' AssemblyNum='41580A'
* PCBAssembly PCBSerialNum='not assigned' AssemblyNum='41056F'
* PCBAssembly PCBSerialNum='not assigned' AssemblyNum='41059D'
* MfgDate 11 JUN 2008 MfgDate
* InternalSensors
* Sensor id='Main Temperature'
* type temperature0 type
* SerialNumber 01906084 SerialNumber
* Sensor
* Sensor id='Main Conductivity'
* type conductivity-0 type
* SerialNumber 01906084 SerialNumber
* Sensor
* Sensor id='Main Pressure'
* type strain-0 type
* SerialNumber 2742950 SerialNumber
* Sensor
* InternalSensors
* ExternalSensors
* Sensor id='volt 0'
* type SBE 43 type
* SerialNumber 431476 SerialNumber
* Sensor
* Sensor id='volt 1'
* type not assigned type
* SerialNumber not assigned SerialNumber
* Sensor
* Sensor id='volt 2'
* type QSP2300 type
* SerialNumber 70185 SerialNumber
* Sensor
* Sensor id='volt 3'
* type FLCDRT type
* SerialNumber
* Sensor
* Sensor id='volt 4'
* type FLNTURT - CHL type
* SerialNumber FLNUTRT-1038 SerialNumber
* Sensor
* Sensor id='volt 5'
* type FLNTURT - NTU type
* SerialNumber FLNTURT-1038 SerialNumber
* Sensor
ExternalSensors
Resolution
Temperature – 0.0001C
Salinity – 0.4 ppm
Pressure – 0.002% of full scale range (7000 m)
Fluorescence CDOM – 0.09 ppb
Fluorescence ECO-AFL – 0.01 ug/l
Oxygen Saturation – 2% of saturation
PAR/Irradiance – 5%
Data Processing:
Data has been converted to engineering units and bin averaged using Sea Bird’s Software – SBE Data Processing, Version 7.18
| File |
|---|
CTD_PROFILES.csv (Comma Separated Values (.csv), 2.33 MB) MD5:b14a8f888d3e8b777cc37596331fe593 Primary data file for dataset ID 3941 |
| Parameter | Description | Units |
| Year | Year of Data Collection in the format YYYY | unitless |
| deployment | Deployment Id | text |
| dataset_name | Dataset Name | text |
| sta_id | Station Id | text |
| location | General Station Location | text |
| date | date (GMT) in the format yyyymmdd | unitless |
| time | time(GMT) | hhmmss |
| lat | latitude (South is negative) | decimal degrees |
| lon | longitude (West is negative) | decimal degrees |
| dataset_description | General Description of Dataset | text |
| DepSM | Depth salt water | meters |
| Sal00 | Salinity | PSU |
| Tv290C | Temperature ITS-90 | degrees Celsius |
| Upoly0 | User Polynomial | (tbd) |
| Density00 | Density | Kg/m^3 |
| WetCDOM | Fluorescence - Wetlab CDOM | mg/m^3 |
| FlECO_AFL | Fluorescence - Wetlab ECO-AFL/FL | mg/m^3 |
| OxsatMg_L | Oxygen Saturation | mg/l |
| Par | PAR/Irradiance - Biospherical/Licor | uEinsteins/m^2/sec |
| Sbeox0PS | Oxygen SBE 43 % saturation | percentage |
| TimeS | Time Elapsed | seconds |
| Dataset-specific Instrument Name | CTD Sea-Bird SEACAT 19 |
| Generic Instrument Name | CTD Sea-Bird SEACAT 19 |
| Dataset-specific Description | Samples were taken using a Sea-Bird SBE19plus. |
| Generic Instrument Description | The Sea-Bird SBE 19 SEACAT Recorder measures conductivity, temperature, and pressure (depth). The SEACAT is self-powered and self-contained and can be deployed in profiling or moored mode. The SBE 19 SEACAT was replaced in 2001 by the 19plus. more information from Sea-Bird Electronics |
| Website | |
| Platform | R/V Llyr |
| Start Date | 2010-06-06 |
| End Date | 2010-08-26 |
| Description | A series of stations were re-visited on 11 separate occasions during the 2010 sampling season.
The stations were generally located in:
Downeast Maine, 44.1°N, 68.1°W – 44.9°N. 66.9°W and
Saco Bay, Maine, 43.45°N, 70.33°W – 43.47°N. 70.28°W
Deployment Location Start_Date End_Date
06-10-2010 Downeast Maine 2010/06/06 2010/06/10
06-15-2010 Saco Bay Maine 2010/06/15 2010/06/15
06-23-2010 Downeast Maine 2010/06/22 2010/06/23
06-25-2010 Saco Bay Maine 2010/06/25 2010/06/25
07-09-2010 Downeast Maine 2010/07/07 2010/07/09
07-12-2010 Saco Bay Maine 2010/07/12 2010/07/12
07-22-2010 Downeast Maine 2010/07/20 2010/07/22
07-27-2010 Saco Bay Maine 2010/07/27 2010/07/27
08-06-2010 Downeast Maine 2010/08/03 2010/08/06
08-19-2010 Saco Bay Maine 2010/08/19 2010/08/19
08-26-2010 Downeast Maine 2010/08/24 2010/08/26 |
Collaborative Research: Does larval transport or physiological tolerance set the southern range boundary of a northern blue mussel?
Acronym "MuLTI" (Mussel Larval Transport Initiative)
This project will test whether the southern range boundary of a northern blue mussel, Mytilus trossulus, is determined by limitations on the dispersal of larvae, or the physiological tolerance of larvae and/or juveniles. Mytilus trossulus and its sister species, M. edulis, co-occur throughout the Canadian maritime provinces and the northern Gulf of Maine. While the abundance of M. trossulus decreases abruptly south of the Canadian border, M. edulis ranges south to North Carolina. Work to date has demonstrated that:
1) Adult M. trossulus in northeastern Maine inhabit coastal sites, islands, and man-made structures that are within the colder water of the Eastern Maine Coastal Current (EMCC).
2) Drifters released in the EMCC rarely enter nearshore waters to the south, suggesting that across-shelf transport is extremely limited.
3) Larvae of the two species may differ slightly in thermal tolerance, and some evidence suggests that tolerance may also be affected by nutritional status.
4) Mytilus trossulus juveniles transplanted within the northeastern Maine region, but outside of the EMCC, have high survivorship, while transplants further to the southwest suffer high mortality.
In combination, these results suggest that larval transport sets the proximate range boundary within northeastern Maine (on a scale of 10 km), but thermal tolerance would ultimately limit the distribution on a larger spatial scale (200 km).
We will test this pair of hypotheses via a combination of field and lab experiments. Satellite drifters equipped with temperature loggers deployed in and out of the EMCC during the season of M. trossulus larval dispersal (mid-June to mid-August) will be used to quantify the physical flow fields and temperature regimes during larval dispersal. Drogues will allow us to assess whether larvae at different depths may experience different flow fields. Data from hydrographic surveys, combined with regular spatial and temporal sampling of mussel larvae and new settlers, will be used to assess possible associations between larval and post-settlement stages and different water masses. The physiological tolerance of new settlers will be assayed via transplants to sites in and out of the EMCC. Finally, laboratory growth and survival experiments will assay larval performance in different thermal and feeding regimes. We will use molecular markers to identify the morphologically indistinguishable larvae and settlers of these sibling species.
| Funding Source | Award |
|---|---|
| NSF Division of Ocean Sciences (NSF OCE) | |
| NSF Division of Ocean Sciences (NSF OCE) |