| Contributors | Affiliation | Role |
|---|---|---|
| Levin, Lisa A. | University of California-San Diego (UCSD-SIO) | Principal Investigator |
| Muccino, Julia C. | Arizona State University (ASU) | Co-Principal Investigator |
| Rasmussen, Linda L. | University of California-San Diego (UCSD-SIO) | Co-Principal Investigator |
| Gonzalez, Jennifer | University of California-San Diego (UCSD-SIO) | Contact |
| Gegg, Stephen R. | Woods Hole Oceanographic Institution (WHOI BCO-DMO) | BCO-DMO Data Manager |
Multi year temperature data in degs C
May/2003 - Nov/2009
From coastal deployment on moorings approx. 1-2 meters below surface
Hobo temperature loggers deployed on anchored moorings at 1-3 m water depth in inshore locations having approximately 10 m total water depth.
Deployments generally occurred for 2-4 weeks in May and November between 2003 and 2009.
No Processing of the temperature data was done.
BCO-DMO Processing
Generated from original file "BC_TemperatureData.xls" contributed by Lisa Levin
- Simple awk (BC_Temperature_Transpose.awk) written to reorganize the data by Site
- Site Id, Site Abbreviation and Site Lat/Lon added
- Date converted to YYYYMMDD
- Time converted to HHMMSS
| File |
|---|
Temperature_Data.csv (Comma Separated Values (.csv), 7.92 MB) MD5:a7a3c71cef3715267bfa6cbc8e6ec8b7 Primary data file for dataset ID 3637 |
| Parameter | Description | Units |
| Latitude | latitude in decimal degrees (positive is North) | decimal degrees |
| Longitude | longitude in decimal degrees (negative is West) | decimal degrees |
| Abbr | Site Abbreviation | text |
| Site | Site Name | dimensionless |
| Date | Date (GMT -8) | YYYYMMDD |
| Temp | Temperature | degrees Celsius |
| Time | Time (GMT -8) | HHMMSS |
| Dataset-specific Instrument Name | Onset Pro v2 temperature logger |
| Generic Instrument Name | Onset HOBO Pro v2 temperature logger |
| Generic Instrument Description | The HOBO Water Temp Pro v2 temperature logger, manufactured by Onset Computer Corporation, has 12-bit resolution and a precision sensor for ±0.2°C accuracy over a wide temperature range. It is designed for extended deployment in fresh or salt water.
Operation range: -40° to 70°C (-40° to 158°F) in air; maximum sustained temperature of 50°C (122°F) in water
Accuracy: 0.2°C over 0° to 50°C (0.36°F over 32° to 122°F)
Resolution: 0.02°C at 25°C (0.04°F at 77°F)
Response time: (90%) 5 minutes in water; 12 minutes in air moving 2 m/sec (typical)
Stability (drift): 0.1°C (0.18°F) per year
Real-time clock: ± 1 minute per month 0° to 50°C (32° to 122°F)
Additional information (http://www.onsetcomp.com/)
Onset Computer Corporation
470 MacArthur Blvd
Bourne, MA 02532 |
| Website | |
| Platform | Bivalve Connectivity |
| Start Date | 2003-05-01 |
| End Date | 2009-11-30 |
| Description | Life history data collection and Inshore larval connectivity studies May/2003 - Nov/2009
A series of sites re-visited on separate occasions from May/2003 - Nov/2009
General Location of the Sites:
Southern California Coast around 32N, 117W
Northwest Coast of Mexico - Bajamar, MX and Punta Morro, MX |
Temporal and spatial scales of variability in bivalve connectivity
Larval connectivity, the extent to which sub-populations exchange larvae, has emerged as a fundamental concept within the diverse arenas of population ecology, biotic resource management, biodiversity conservation, invasive species control, and habitat restoration. However, determining dispersal trajectories of larvae and their scales of variability remain a major challenge. Project investigators Levin, Muccino and Rasmussen will use an integration of prospective modeling and retrospective (elemental fingerprinting) approaches to assess variability in larval connectivity and its demographic consequences for mytilid mussel populations in southern California. This project builds on initial studies of mytilid connectivity to address in greater depth and with a more strongly coupled physical/biological approach, questions of variability and its causes.
These collaborating scientists will address hypotheses concerning the spatial and temporal scales of connectivity for mussels, Mytilus californianus and Mytilus galloprovincialis, examining their consistency among sites and species. This will be accomplished through (a) larval out-planting at 18 locations in San Diego County several times a year to generate reference signatures for trace elemental fingerprinting, (b) collection of recruits and elemental analyses of their larval shells to determine sites and regions of origins, and (c) high frequency data collection at 2 bay locations for M. galloprovincialis and 2 open coast locations for M. californianus to carry out weekly analysis of recruitment variability, its link to chemical signals and recruit origins, and for collection of demographic data (size-specific survivorship, growth and fecundity).
Through numerical dispersal simulations of the coastal ocean and bays, and subsequent comparisons to fingerprinting based assessment of recruit origins, they will examine the roles of circulation, local vs. remote forcing, bay-ocean interaction, episodic events, and larval attributes (vertical behavior, release times, planktonic duration) in defining the variability of connectivity. Demographic data will be combined with connectivity data to model the population and meta-population level fitness consequences of observed mytilid connectivity patterns.
The results of connectivity studies have direct applicability to conservation and management of commercial and natural bivalve populations, and given the key structural role of mussels, to the conservation of rocky shore habitats.
| Funding Source | Award |
|---|---|
| NSF Division of Ocean Sciences (NSF OCE) | |
| NSF Division of Ocean Sciences (NSF OCE) |