Data Package Metadata View Summary

Production, biomass, and yield estimates for walleye populations in the Ceded Territory of Wisconsin from 1990-2017

General Information

Data Package:
Local Identifier:	knb-lter-ntl.373.1
Title:	Production, biomass, and yield estimates for walleye populations in the Ceded Territory of Wisconsin from 1990-2017
Alternate Identifier:	DOI PLACE HOLDER
Abstract:	Recreational fisheries are valued at $190B globally and constitute the predominant use of wild fish stocks in developed countries, with inland systems contributing the dominant fraction of recreational fisheries. Although inland recreational fisheries are thought to be highly resilient and self-regulating, the rapid pace of environmental change is increasing the vulnerability of these fisheries to overharvest and collapse. We evaluate an approach for detecting hidden overharvest of inland recreational fisheries based on empirical comparisons of harvest and biomass production. Using an extensive 28-year dataset of the walleye fisheries in Northern Wisconsin, USA, we compare empirical biomass harvest (Y) and calculated production (P) and biomass (B) for 390 lake-year combinations. Overharvest occurs when harvest exceeds production in that year. Biomass and biomass turnover (P/B) both declined by about 30% and about 20% over time while biomass harvest did not change, causing overharvest to increase. Our analysis revealed 40% of populations were production-overharvested, a rate about 10x higher than current estimates based on numerical harvest used by fisheries managers. Our study highlights the need for novel approaches to evaluate and conserve inland fisheries in the face of global change.
Publication Date:	2019-07-30
Language:	English

Time Period

Begin:

1990-04-01

End:

2017-05-31

People and Organizations
Contact:	Embke, Holly (University of Wisconsin) [ email ]
Contact:	Information Manager, NTL (University of Wisconsin) [ email ]
Creator:	Embke, Holly (University of Wisconsin)
Creator:	Rypel, Andrew
Creator:	Carpenter, Stephen (University of Wisconsin)
Creator:	Sass, Greg
Creator:	Cichosz, Thomas
Creator:	Hennessy, Joseph
Creator:	Vander Zanden, Jake (University of Wisconsin)

Data Entities
Data Table Name:	Production, biomass, and yield estimates for walleye populations 1990-2017.
Description:	Production, biomass, and empirical biomass harvest (Y) and calculated production (P) and biomass (B) for 390 lake-year combinations for walleye populations in the Ceded Territory of Wisconsin from 1990-2017

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/knb-lter-ntl/373/1/e8fdb056631cf851c6659f28d0c8b51a
Name:	Production, biomass, and yield estimates for walleye populations 1990-2017.
Description:	Production, biomass, and empirical biomass harvest (Y) and calculated production (P) and biomass (B) for 390 lake-year combinations for walleye populations in the Ceded Territory of Wisconsin from 1990-2017
Number of Records:	566
Number of Columns:	17

Table Structure

Object Name:

pb_yield_age5plus_edi.csv

Size:

70754

Authentication:

d6080e7d07ba110dd6e31e4c4f961716 Calculated By MD5

Authentication:

9861ac08f10cf5be56e18e87065395564309ae88 Calculated By SHA-1

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

wbic_year

wbic

year

recruit.cat

n.angler

yield.angler.kg

n.tribal

yield.tribal.kg

n.total

total.yield.kg.ha

yield.p

Column Name:

wbic_year

wbic

year

recruit.cat

n.angler

yield.angler.kg

n.tribal

yield.tribal.kg

n.total

total.yield.kg.ha

yield.p

Definition:

Lake-year identification name

Lake identification number

year

number of walleye sampled

walleye population estimate

surface area of lake

walleye production rate

walleye standing biomass

walleye production/biomass (turnover rate) per year

Wisconsin Department of Natural Resources designated recruitment category for each lake

number of fish harvested by anglers

angler yield

number of fish harvested by tribal spearfishers

tribal spearfisher yield

n.total

total yield (angler + tribal) per unit lake area

yield per production

Storage Type:

string

Measurement Type:

nominal

ratio

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

Lake-year identification name

Definition

Lake identification number

Unit	nominalYear
Type	real

Unit	number
Type	real

Unit	number
Type	real

Unit	hectare
Type	real

Unit	kilogramsPerHectarePerYear
Type	real

Unit	kilogramsPerHectare
Type	real

Unit	number
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	NR
Definition	natural recruitment
Source

Code Definition

Code	ST
Definition	stocked
Source

Unit	number
Type	real

Unit	kilogram
Type	real

Unit	number
Type	real

Unit	kilogram
Type	real

Definition

n.total

Unit	kilogramsPerHectare
Type	real

Unit	dimensionless
Type	real

Missing Value Code:

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	nota vailable

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Package Usage Rights

Data Policies

This information is released to the public domain under the Creative Commons license CC-BY 4.0 (see: https://creativecommons.org/licenses/by/4.0/). It may be distributed, remixed, and built upon. You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. The consumer of these data ("Data User" herein) should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. Thank you.

Keywords

By Thesaurus:
NTL Themes	Related Projects, biological (all), fish
NTL Keywords	North Temperate Lakes - LTER, NTL LTER, recreational fisheries, Walleye
Core Areas	Populations
LTER Controlled Vocabulary	biomass, fishes, lakes, production

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

Methods and protocols used in the collection of this data package

Description:

All methods describing the calculation of these data can be found in Embke et al. (in review)

People and Organizations

Creators:

Individual:

Holly Embke

Organization:

University of Wisconsin

Address:

608 North Park Street,

Madison, WI 53706 US

Email Address:

hembke@wisc.edu

Individual:

Andrew Rypel

Address:

Madison, WI US

Phone:

(608) 221-6339 (voice)

Email Address:

Andrew.Rypel@wisconsin.gov

Web Address:

http://dnr.wi.gov/staffdir/_newsearch/ContactSearchResultsExt.aspx?cno=53433&cSrc=EMPLOYEE

Id:

https://orcid.org/0000-0002-9812-8306

Individual:

Stephen Carpenter

Organization:

University of Wisconsin

Address:

680 North Park Street,

Madison, WI 53706 US

Phone:

(608) 262-3014 (voice)

Phone:

(608) 265-2340 (facsimile)

Email Address:

steve.carpenter@wisc.edu

Web Address:

http://limnology.wisc.edu/steve_carpenter.htm

Id:

http://orcid.org/0000-0001-8097-8700

Individual:

Greg Sass

Address:

Madison, WI 53706 US

Individual:

Thomas Cichosz

Address:

Email Address:

thomas.cischosz@wisconsin.gov

Individual:

Joseph Hennessy

Address:

Email Address:

joseph.hennessy@wisconsin.gov

Individual:

Jake Vander Zanden

Organization:

University of Wisconsin

Address:

680 North Park Street,

Madison, WI 53706 US

Phone:

(608) 262-9464 (voice)

Phone:

(608) 265-2340 (facsimile)

Email Address:

mjvanderzand@wisc.edu

Web Address:

http://www.jakevzlab.net/

Id:

http://orcid.org/0000-0002-8122-1416

Contacts:

Individual:

Holly Embke

Organization:

University of Wisconsin

Address:

608 North Park Street,

Madison, WI 53706 US

Email Address:

hembke@wisc.edu

Individual:

NTL Information Manager

Organization:

University of Wisconsin

Address:

680 North Park Street,

Madison, WI 53706 US

Email Address:

ntl.infomgr@gmail.com

Temporal, Geographic and Taxonomic Coverage

Temporal, Geographic and/or Taxonomic information that applies to all data in this dataset:

Time Period

Begin:

1990-04-01

End:

2017-05-31

Geographic Region:

Description:

Ceded Territory of Wisconsin northern one third of the state

Bounding Coordinates:

Northern:	46.9339	Southern:	44.4634
Western:	-92.8855	Eastern:	-86.8734

Taxonomic Range:

Classification:

Rank Name:	species
Rank Value:	Sander vitreus
Common Name:	Walleye

Project

Parent Project Information:

Title:

Walleye Safe Operating Space

Personnel:

Individual:

Stephen Carpenter

Organization:

University of Wisconsin

Address:

680 North Park Street,

Madison, WI 53706 US

Phone:

(608) 262-3014 (voice)

Phone:

(608) 265-2340 (facsimile)

Email Address:

steve.carpenter@wisc.edu

Web Address:

http://limnology.wisc.edu/steve_carpenter.htm

Id:

http://orcid.org/0000-0001-8097-8700

Role:

Principal Investigator

Funding:

USGS

Other Metadata

Copyright 2024 Environmental Data Initiative. This material is based upon work supported by the National Science Foundation under grants #2223103 and #2223104. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Please contact us with questions, comments, or for technical assistance regarding this web site or the Environmental Data Initiative. Please read our privacy policy to know what information we collect about you and to understand your privacy rights.

EDI is a collaboration between the University of New Mexico and the University of Wisconsin – Madison, Center for Limnology:

Data Package Metadata View Summary

Production, biomass, and yield estimates for walleye populations in the Ceded Territory of Wisconsin from 1990-2017

Data Entities

Data Table

Data Package Usage Rights

Data Policies

Keywords

Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project

Parent Project Information:

Recently Added

Recently Updated

Data Package Metadata View Summary

Production, biomass, and yield estimates for walleye populations in the Ceded Territory of Wisconsin from 1990-2017

+/- Data Entities

Data Table

+/- Data Package Usage Rights

Data Policies

+/- Keywords

+/- Methods and Protocols

These methods, instrumentation and/or protocols apply to all data in this dataset:

+/- People and Organizations

+/- Temporal, Geographic and Taxonomic Coverage

+/- Project

Parent Project Information:

Data Entities

Data Package Usage Rights

Keywords

Methods and Protocols

People and Organizations

Temporal, Geographic and Taxonomic Coverage

Project