Dataset: Oyster Population Model Estimates

Name: Population model estimates for oysters (Crassostrea virginica) in the Choptank and Little Choptank Rivers
Published: 2020-04-09
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.808879.1

Temporal Extent: 1989 - 2015

Project:

Coastal SEES Collaborative Research: Oyster fisheries in the Chesapeake Bay: Integrating stakeholder objectives with natural system models to promote sustainable policy (Chesapeake Bay Oyster Fisheries)

Principal Investigator:

Michael Wilberg (University of Maryland Center for Environmental Science, UMCES/CBL)

Contact:

Matthew Damiano (University of Maryland Center for Environmental Science, UMCES/CBL)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2020-04-09

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Population model estimates for oysters (Crassostrea virginica) in the Choptank and Little Choptank Rivers

Abstract:

This data set contains estimates derived from a population model of oysters in the Choptank and Little Choptank Rivers. The methods and data used in the model are described in Damiano et al. (2019).

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2020-04-09	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.808879.1	2020-09-18

Description

This data set contains estimates derived from a population model of oysters in the Choptank and Little Choptank Rivers. The methods and data used in the model are described in Damiano et al. (2019).

Terms beginning with "obs" e.g. obs_spat, small, mk, etc. Refer to "observed" log-scale indices of abundance from the MD DNR Fall Dredge Survey; values were obtained from MD DNR data for fitting in the standardization model.
Terms beginning with "log_pred" e.g. log_pred_spat, small, mk, etc. Refer to standardized "predicted log scale indices of relative density that have been estimated using the standardization model.
Terms containing "_mil" suffix e.g. sp_mil, sm_mil, mk_mil contain abundance estimates from the population dynamics model in millions of oysters .

Data Files

File
oyster_pop_model_estimates.csv (Comma Separated Values (.csv), 82.83 KB) MD5:eb69eb3e73aa412e4cc3a4aa542fed41 Primary data file for dataset ID 808879

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1427019

Deployments

None available yet

Instruments

None available yet

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
km_Hab	Estimated amount of oyster habitat in kilometers	kilometers	no_bcodmo_term
Hab	Estimated amount of oyster habitat in meters	meters	no_bcodmo_term
hab_upper	95% upper confidence interval for the estimated amount of habitat	meters	no_bcodmo_term
hab_lower	95% lower confidence interval for the estimated amount of habitat	meters	no_bcodmo_term
pred_PD_CPUE_a	Standardized estimates of catch-per-unit-effort for power dredge gear at the end of the oyster fishing season	unitless	no_bcodmo_term
location_name	Name of location/model run. "open" and "closed" refer to whether the model included closures from the implementation of oyster sanctuaries	unitless	site
year	Year; format: yyyy	unitless	year
obs_spat	"observed" log-scale index of abundance of young of the year (YOY) oysters	unitless	abundance
A_upper	95% upper confidence interval for the estimated annual rate of natural mortality	unitless	no_bcodmo_term
obs_small	"observed" log-scale index of abundance of small, sexually mature oysters	unitless	abundance
A_lower	95% lower confidence interval for the estimated annual rate of natural mortality	unitless	no_bcodmo_term
obs_mk	"observed" log-scale index of abundance of market-sized, sexually mature oysters	unitless	abundance
r_upper	95% upper confidence interval for the estimated recruitment (YOY;spat)	unitless	no_bcodmo_term
obs_sm_b	"observed" log-scale index of abundance of the oyster shell "box" left behind when small oysters die	unitless	abundance
M	Estimated instantaneous rate of natural mortality	unitless	no_bcodmo_term
r_lower	95% lower confidence interval for the estimated recruitment (YOY;spat)	unitless	no_bcodmo_term
obs_mk_b	"observed" log-scale index of abundance of the oyster shell "box" left behind when market-sized oysters die	unitless	abundance
A	Estimated annual rate of natural mortality	unitless	no_bcodmo_term
log_pred_spat	"predicted" log scale index of relative density of young of the year (YOY) oysters	unitless	density
u	Estimated rate of exploitation	unitless	u
log_pred_small	"predicted" log scale index of relative density of small, sexually mature oysters	unitless	density
HT_CPUE_b	Observed (calculated) catch-per-unit-effort for hand tong gear at the beginning of the oyster fishing season	unitless	no_bcodmo_term
u_upper	95% upper confidence interval for the estimated rate of exploitation	unitless	no_bcodmo_term
log_pred_mk	"predicted" log scale index of relative density of market-sized, sexually mature oysters	unitless	density
pred_HT_CPUE_b	Standardized estimates of catch-per-unit-effort for hand tong gear at the beginning of the oyster fishing season	unitless	no_bcodmo_term
u_lower	95% lower confidence interval for the estimated rate of exploitation	unitless	no_bcodmo_term
log_pred_sm_b	"predicted" log scale index of relative density of the oyster shell "box" left behind when small oysters die	unitless	density
HT_CPUE_a	Observed (calculated) catch-per-unit-effort for hand tong gear at the end of the oyster fishing season	unitless	no_bcodmo_term
log_pred_mk_b	"predicted" log scale index of relative density of the oyster shell "box" left behind when market-sized oysters die	unitless	density
pred_HT_CPUE_a	Standardized estimates of catch-per-unit-effort for hand tong gear at the end of the oyster fishing season	unitless	no_bcodmo_term
spat	population dynamics model estimate of 1000s of spat	unitless	abundance
PD_CPUE_b	Observed (calculated) catch-per-unit-effort for power dredge gear at the beginning of the oyster fishing season	unitless	no_bcodmo_term
pred_PD_CPUE_b	Standardized estimates of catch-per-unit-effort for power dredge gear at the beginning of the oyster fishing season	unitless	no_bcodmo_term
PD_CPUE_a	Observed (calculated) catch-per-unit-effort for power dredge gear at the end of the oyster fishing season	unitless	no_bcodmo_term
sp_mil	abundance estimate of YOY oysters from the population dynamics model in millions of oysters	unitless (count)	abundance
sm_mil	abundance estimate of small, sexually mature oysters from the population dynamics model in millions of oysters	unitless (count)	abundance
mk_mil	abundance estimate of market-sized, sexually mature oysters from the population dynamics model in millions of oysters	unitless (count)	abundance
adult_mil	Total estimated abundance, in millions, of small and market oysters	unitless (count)	abundance
harvest_sm	Estimated catch of small oysters	unitless (count)	abundance
harvest_mk	Estimated catch of small oysters	unitless (count)	abundance
N_upper	95% upper confidence interval for the estimated adult abundance (smalls, markets)	unitless (count)	no_bcodmo_term
N_lower	95% lower confidence interval for the estimated adult abundance (smalls, markets)	unitless (count)	no_bcodmo_term
small	population dynamics model estimate of 1000s of small oysters	unitless (count)	abundance
mk	population dynamics model estimate of 1000s of market oysters	unitless (count)	abundance

Database

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Dataset: Oyster Population Model Estimates