1b:I[42426,["/_next/static/immutable/chunks/1xctgzqre-wsy.js","/_next/static/immutable/chunks/06_-wz6pdtp2b.js","/_next/static/immutable/chunks/30e52g49hg40p.js","/_next/static/immutable/chunks/02yq6tul2z-oh.js","/_next/static/immutable/chunks/10bx_ec2vj7n_.js","/_next/static/immutable/chunks/33bfn03fo8xnt.js","/_next/static/immutable/chunks/0tfjf78scu61b.js","/_next/static/immutable/chunks/31xnvej4n1bi9.js"],"default"] 1c:Tc6d,

Physical Influences on Populations in the California Current (Botsford, L. [Univ. Calif. Davis (UCD)], Hastings, A. M. [UCD], Largier, J. [Scripps Institute of Oceanography]) We propose to formulate models spanning the individual level to the metapopulation level for two genera of interest to GLOBEC in the CCS: ( 1) the two CCS salmon species identified by GLOBEC, coho salmon (Oncorhynchus kisutch) and chinook salmon (O. tshawytscha) and (2) Dungeness crab (Cancer magister), a species which covaries with salmon, is a significant prey of both species, and is subject to similar mesoscale circulation patterns. The ultimate purpose of these models will be to link the different scales of variability and levels of ecological organization in the various retrospective, monitoring and process studies so that the effects of changes in the physical environment on populations can be projected. Also, we will answer a number of questions through modeling and analysis of existing data, that will allow better focus of field studies on critical issues.

While upwelling and the regime shift in the mid-1970s are believed to have affected survival through this period, results of field studies of the cause are equivocal. We will develop a model to evaluate the interaction of time of ocean entry, size at entry, varying growth rate, and size dependent mortality rate on the fraction surviving this phase, and use it to compare the various field results in a common context. The results will help to focus field studies, and the model will provide a framework for evaluation of those studies. Even though Core Hypothesis III focuses on the juvenile stage, ENSO events are known to have a dramatic effect on survival of pre-spawning adults. Because the behavior of random populations of semelparous, anadromous species is poorly understood, the relative effects of environmental variability on their persistence and productivity is unknown. We will formulate a population model to determine which variable life history stage has the greater effect so that the GLOBEC process studies can focus on the appropriate one. We will formulate a metapopulation model to evaluate whether covariability between the environmental influences on different subpopulations affect persistence, and if it does, whether more productive populations can "rescue" extinct less productive populations?

We will also model and analyze the Dungeness crab population because the dramatic fluctuations in their abundance along the coast may be caused by the same environmental factor(s) that cause the salmon populations to vary, and may also be a cause of that variability through predation. We will apply a new approach to population analysis that answers the question: which environmental forcing function can combine with known density-dependent recruitment mechanisms to produce the observed variability in crab catch? (abstract)

This page was last updated on March 15, 2007.

Hal Batchelder
College of Oceanic and Atmospheric Sciences
Oregon State University
Corvallis, OR 97331-5503
phone: 541-737-4500; FAX 541-737-2064

1d:T5cb,Program in a Nutshell Goal: To understand the effects of climate variability and climate change on the distribution, abundance and production of marine animals (including commercially important living marine resources) in the eastern North Pacific. To embody this understanding in diagnostic and prognostic ecosystem models, capable of capturing the ecosystem response to major climatic fluctuations. Approach: To study the effects of past and present climate variability on the population ecology and population dynamics of marine biota and living marine resources, and to use this information as a proxy for how the ecosystems of the eastern North Pacific may respond to future global climate change. The strong temporal variability in the physical and biological signals of the NEP will be used to examine the biophysical mechanisms through which zooplankton and salmon populations respond to physical forcing and biological interactions in the coastal regions of the two gyres. Annual and interannual variability will be studied directly through long-term observations and detailed process studies; variability at longer time scales will be examined through retrospective analysis of directly measured and proxy data. Coupled biophysical models of the ecosystems of these regions will be developed and tested using the process studies and data collected from the long-term observation programs, then further tested and improved by hindcasting selected retrospective data series.6:["$","$L1b",null,{"dataset":{"_id":"2462","description":"

California Current System Process Cruises - CTD data

\n","problem":"","acquisition":"$1c","processing":"

Salinity was computed using standard algorithms from Fofonoff and Millard, 1983 (Algorithms for computation of fundamental properties of sea water. UNESCO Technical Papers in Marine Science, 44, 53 pp.)

Progress Report: April 1999: http://nepglobec.bco-dmo.org/projs/99.botsford.html

\n","bcodmoProcessing":"","title":"CTD data from California Current System (CCS) Process/Mesoscale Cruises on the R/Vs New Horizon, Revelle, Thompson, and Wecoma in the Northeast Pacific from 2000-2002 as part of the U.S. GLOBEC program (NEP project)","nickname":"ccs_proc_CTD","dataUrl":"","currentState":"Final no updates expected","currentStateId":"7","validated":true,"restricted":false,"version":"1","version_date":"2007-04-10T04:00:00.000Z","abstract":"CTD data from California Current System (CCS) Process/Mesoscale Cruises on the R/Vs New Horizon, Revelle, Thompson, and Wecoma in the Northeast Pacific from 2000-2002 as part of the U.S. GLOBEC program.","citation":"Batchelder, H. (2007) CTD data from California Current System (CCS) Process/Mesoscale Cruises on the R/Vs New Horizon, Revelle, Thompson, and Wecoma in the Northeast Pacific from 2000-2002 as part of the U.S. GLOBEC program (NEP project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2007-04-10 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.2462.1 [access date]","citationParts":{"identifier":"doi:10.1575/1912/bco-dmo.2462.1","versionDate":"2007-04-10","versionId":"1","year":"2007","title":"CTD data from California Current System (CCS) Process/Mesoscale Cruises on the R/Vs New Horizon, Revelle, Thompson, and Wecoma in the Northeast Pacific from 2000-2002 as part of the U.S. GLOBEC program (NEP project)","authors":"Batchelder, H.","publisher":"Biological and Chemical Oceanography Data Management Office (BCO-DMO)."},"doi":"10.1575/1912/bco-dmo.2462.1","release_date":null,"field_dataset_location":"","temporal_extent":{"start":"2000-05-30T04:00:00.000Z","end":"2002-08-19T04:00:00.000Z"},"temporal":{"resolution":"time:unitDay","type":"time:Interval","start":{"value":"959659200","label":"2000-05-30"},"end":{"value":"1029729600","label":"2002-08-19"}},"spatial_extent":{"shape":"polygon","center":{"latitude":41.736349999999,"longitude":-124.9446},"wkt":"POLYGON ((-126.1972 38.7977, -123.692 38.7977, -123.692 44.675, -126.1972 44.675, -126.1972 38.7977))","north":44.675,"east":-123.692,"south":38.7977,"west":-126.1972},"dataset_type":["Cruise Results"],"keywords":["oceans"],"data_files":[{"id":"898720","title":"ccs_proc_ctd.csv","url":"https://datadocs.bco-dmo.org/dataset/2462/file/jAABwmkiAnnxQP/ccs_proc_ctd.csv","showTableUrl":"https://www.bco-dmo.org/dataset/2462/data/view/898720","description":"Primary data file for dataset ID 2462","filename":"ccs_proc_ctd.csv","bytesize":12021941,"checksum":{"value":"5f1c5e1558c8e6d2dcf71e0214ea7598","Algorithm":{"_id":"190","name":"MD5"}},"mimetype":"text/csv","fileType":{"_id":"192","name":"Comma Separated Values (.csv)"},"isErddap":"bcodmo_dataset_2462","date":"","isPublicDuringEmbargo":false,"primaryDataFile":true,"showTable":true,"restricted":false}],"supplemental_files":[],"roles":[{"role":{"_id":"138","name":"Principal Investigator"},"performedBy":{"_id":"50383","name":"Hal Batchelder"},"performedAtOrganization":{"_id":"124","name":"Oregon State University"}},{"role":{"_id":"145","name":"BCO-DMO Data Manager"},"performedBy":{"_id":"50382","name":"Ms Dicky Allison"},"performedAtOrganization":{"_id":"191","name":"Woods Hole Oceanographic Institution"}}],"deployments":[{"_id":"57557","name":"NH0005","synonyms":[],"dates":{"start":"2000-05-28T00:00:00.000Z","end":"2000-06-13T00:00:00.000Z"},"platform":{"_id":"54011","name":"R/V New Horizon"},"chiefScientists":[{"id":"50476","name":"Cynthia Tynan","role":"Chief Scientist"}]},{"_id":"57558","name":"NH0007","synonyms":[],"dates":{"start":"2000-07-27T00:00:00.000Z","end":"2000-08-12T00:00:00.000Z"},"platform":{"_id":"54011","name":"R/V New Horizon"},"chiefScientists":[{"id":"50438","name":"William T. Peterson","role":"Chief Scientist"}]},{"_id":"57559","name":"NH0207","synonyms":[],"dates":{"start":"2002-07-31T00:00:00.000Z","end":"2002-08-19T00:00:00.000Z"},"platform":{"_id":"54011","name":"R/V New Horizon"},"chiefScientists":[{"id":"50438","name":"William T. Peterson","role":"Chief Scientist"}]},{"_id":"57574","name":"R0208","synonyms":[],"dates":{"start":"2002-07-31T00:00:00.000Z","end":"2002-08-19T00:00:00.000Z"},"platform":{"_id":"54013","name":"R/V Roger Revelle"},"chiefScientists":[{"id":"50480","name":"Jack Barth","role":"Chief Scientist"}]},{"_id":"57595","name":"T0205","synonyms":[],"dates":{"start":"2002-06-01T00:00:00.000Z","end":"2002-06-17T00:00:00.000Z"},"platform":{"_id":"54017","name":"R/V Thomas G. Thompson"},"chiefScientists":[{"id":"50633","name":"Timothy Cowles","role":"Chief Scientist"}]},{"_id":"57598","name":"W0005A","synonyms":[],"dates":{"start":"2000-05-29T00:00:00.000Z","end":"2000-06-17T00:00:00.000Z"},"platform":{"_id":"54018","name":"R/V Wecoma"},"chiefScientists":[{"id":"50633","name":"Timothy Cowles","role":"Chief Scientist"}]},{"_id":"57600","name":"W0008","synonyms":[],"dates":{"start":"2000-07-29T00:00:00.000Z","end":"2000-08-17T00:00:00.000Z"},"platform":{"_id":"54018","name":"R/V Wecoma"},"chiefScientists":[{"id":"50480","name":"Jack Barth","role":"Chief Scientist"}]},{"_id":"57609","name":"W0205A","synonyms":[],"dates":{"start":"2002-05-29T00:00:00.000Z","end":"2002-06-18T00:00:00.000Z"},"platform":{"_id":"54018","name":"R/V Wecoma"},"chiefScientists":[{"id":"51330","name":"Julie E. Keister","role":"Chief Scientist"},{"id":"50438","name":"William T. Peterson","role":"Chief Scientist"}]}],"funding":[{"_id":"54778","name":"OCE-0003273","fundingSource":{"_id":"355","name":"NSF Division of Ocean Sciences"},"url":"https://www.nsf.gov/awardsearch/show-award?AWD_ID=0003273"},{"_id":"55044","name":"unknown NEP NOAA","fundingSource":{"_id":"352","name":"National Oceanic and Atmospheric Administration"},"url":""}],"instruments":[{"_id":"4197","name":"Conductivity, Temperature, Depth","description":"CTD measurements taken, CTD unit unidentified.","type_id":"417","type_name":"CTD - profiler","type_desc":"The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.\r\n\r\nThis term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934.","type_acronym":""},{"_id":"4793","name":"Conductivity, Temperature, Depth","description":"","type_id":"417","type_name":"CTD - profiler","type_desc":"The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.\r\n\r\nThis term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934.","type_acronym":""}],"parameters":[{"_id":"14917","name":"cruiseid","format":"","frictionlessType":"","description":"

Cruise identifier, e.g. W0005 R/V Wecoma cruise 0005.

","units":{"_id":"","name":"unitless"},"type":{"_id":"789","name":"cruiseid","description":"

cruise identifier, e.g. en9402 R/V Endeavor cruise 9402

"}},{"_id":"14918","name":"year","format":"","frictionlessType":"","description":"

Year, e.g. 2002.

","units":{"_id":"","name":"unitless"},"type":{"_id":"1062","name":"year","description":"

year, reported as YYYY, e.g. 1995

"}},{"_id":"14919","name":"station","format":"","frictionlessType":"","description":"

Consecutive station number.

","units":{"_id":"","name":"unitless"},"type":{"_id":"987","name":"station","description":"

Station identifier; a unique number or alphanumeric string designating a general geographic location at which one or more sampling activities may occur.

"}},{"_id":"14920","name":"station_name","format":"","frictionlessType":"","description":"

Station code.

","units":{"_id":"","name":"unitless"},"type":{"_id":"987","name":"station","description":"

Station identifier; a unique number or alphanumeric string designating a general geographic location at which one or more sampling activities may occur.

"}},{"_id":"14921","name":"day","format":"","frictionlessType":"","description":"

Day of month (local time).

","units":{"_id":"","name":"unitless"},"type":{"_id":"803","name":"day_local","description":"

day, local time

"}},{"_id":"14922","name":"month","format":"","frictionlessType":"","description":"

Month of measurement (0 to 12); local time.

","units":{"_id":"","name":"unitless"},"type":{"_id":"895","name":"month_local","description":"

month of year, local time

"}},{"_id":"14923","name":"time","format":"","frictionlessType":"","description":"

Time of day, local time, using 2400 clock format.

","units":{"_id":"","name":"unitless"},"type":{"_id":"1007","name":"time_local","description":"

time of day, local time, using 2400 clock format

"}},{"_id":"14924","name":"depth_w","format":"","frictionlessType":"","description":"

Water depth, in meters.

","units":{"_id":"","name":"meters"},"type":{"_id":"818","name":"depth_w","description":"

water depth, in meters

"}},{"_id":"14925","name":"lat","format":"","frictionlessType":"","description":"

Latitude; north is positive.

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"730","name":"latitude","description":"

latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes

"}},{"_id":"14926","name":"lon","format":"","frictionlessType":"","description":"

Longitude, in decimal degrees, east is positive.

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"731","name":"longitude","description":"

longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datasets as degrees, minutes

"}},{"_id":"14927","name":"press","format":"","frictionlessType":"","description":"

Pressure.

","units":{"_id":"","name":"decibars"},"type":{"_id":"732","name":"pressure","description":"

water pressure at measurement; depth reported as pressure; positive number increasing with water depth

"}},{"_id":"14928","name":"temp","format":"","frictionlessType":"","description":"

Water temperature.

","units":{"_id":"","name":"degrees Celsius"},"type":{"_id":"733","name":"temperature","description":"

water temperature at measurement depth

"}},{"_id":"14929","name":"sal","format":"","frictionlessType":"","description":"

salinity, calculated from the CTD 'primary sensors' of conductivity and temperature. See 'Processing Description'.

","units":{"_id":"","name":"Practical Salinity Scale, dimensionless"},"type":{"_id":"955","name":"sal","description":"

Salinity: The amount (mass or quantity of matter) of salt per amount (volume or mass) of a body of water.

"}},{"_id":"14930","name":"potemp","format":"","frictionlessType":"","description":"

Potential temperature.

","units":{"_id":"","name":"International Practical Temperature Scale - 68 ,or 90"},"type":{"_id":"936","name":"potemp","description":"

potential temperature (International Practical Temperature Scale - 68 ,or 90). When known, the scale will be reported in the units field of the documentation file.

"}},{"_id":"14931","name":"sigma_0","format":"","frictionlessType":"","description":"

Sigma-theta density.

","units":{"_id":"","name":"not supplied"},"type":{"_id":"971","name":"sigma_0","description":"

sigma-theta (potential density), often reported in kg/m^3. Sigma-theta is denoted 'sigma_0', where the last digit, a zero, is used to represent the Greek letter theta. This altered density which takes into account adiabatic heating/cooling with changes in pressure is called the 'potential density'. (See How do we measure the density of sea water?)

"}},{"_id":"14932","name":"sp_vol_an","format":"","frictionlessType":"","description":"

Specific volume anomaly.

","units":{"_id":"","name":"CL/T"},"type":{"_id":"1073","name":"no_bcodmo_term","description":"

An association with a community-wide standard parameter has not yet been made.

"}},{"_id":"14933","name":"DYN_HT","format":"","frictionlessType":"","description":"

Dynamic height.

","units":{"_id":"","name":"J/KG"},"type":{"_id":"825","name":"dynh_0","description":"

dynamic height, referenced to surface, in meters

"}},{"_id":"14934","name":"flvolt","format":"","frictionlessType":"","description":"

Fluoresence

","units":{"_id":"","name":"volts"},"type":{"_id":"836","name":"fluor voltage","description":"

fluorometer voltage measurements, in volts

"}},{"_id":"14935","name":"trans","format":"","frictionlessType":"","description":"

light transmission, as percent

","units":{"_id":"","name":"%"},"type":{"_id":"1013","name":"transmission","description":"

light transmission, as percent

"}},{"_id":"14936","name":"trans_v","format":"","frictionlessType":"","description":"

light transmission, as volts

","units":{"_id":"","name":"volts"},"type":{"_id":"1015","name":"trans_v","description":"

light transmission, as volts

"}},{"_id":"14937","name":"O2_v","format":"","frictionlessType":"","description":"

Oxygen current

","units":{"_id":"","name":"volts"},"type":{"_id":"1760","name":"O2_v","description":"

Oxygen voltage

"}},{"_id":"14938","name":"O2S","format":"","frictionlessType":"","description":"

O2 saturation (guessing from O2S and units)

","units":{"_id":"","name":"ml per liter"},"type":{"_id":"911","name":"O2sat","description":"

oxygen saturation, in milliliters/liters or sometimes milligrams per liter.

"}},{"_id":"14939","name":"O2","format":"","frictionlessType":"","description":"

dissolved oxygen

","units":{"_id":"","name":"milliliter/liter"},"type":{"_id":"910","name":"dissolved Oxygen","description":"

dissolved oxygen concentration

"}},{"_id":"14940","name":"PAR","format":"","frictionlessType":"","description":"

downwell Photosynthetically Available Radiation

","units":{"_id":"","name":"uE/cm2/sec"},"type":{"_id":"913","name":"PAR","description":"

Photosynthetically Available [Active] Radiation; downwelling irradiance; units vary: often microEinsteins/meter^2/second, microEinsteins/centimeter^2/second, or micromoles photons/meter/second

"}},{"_id":"28026","name":"O2_temp","format":"","frictionlessType":"","description":"

oxygen temperature

","units":{"_id":"","name":"degrees C"},"type":{"_id":"1073","name":"no_bcodmo_term","description":"

An association with a community-wide standard parameter has not yet been made.

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