Monarchs in Peril: Herbicide-resistant Crops and the Decline of Monarch Butterflies in North America

Metadata Updated: January 29, 2020

The Monarch Butterfly is in trouble. Monarch numbers have plummeted over the past two decades. The butterfly’s decline tracks the virtual eradication of common milkweed—its caterpillar’s chief food source—from Midwestern cropland. The demise of milkweed is due to intensive spraying of glyphosate herbicide on Roundup Ready corn and soybeans that have been genetically engineered to withstand it. Without restoration of milkweed to Midwestern crop fields, the monarch’s days in the heart of its range are numbered. In this report, we draw upon the work of milkweed and monarch biologists, weed scientists and other researchers to provide a detailed analysis of how herbicide use triggered by genetically engineered, herbicide-resistant crops has been a major driver in the dramatic decline of milkweeds and monarchs. Our immediate goal is to inform policies that reconcile agriculture and monarchs in the heart of North America.

Access & Use Information

Restricted: This dataset can only be accessed or used under certain conditions. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.
The information resource is proprietary and/or copyrighted. Access to this information by the public is very limited. Please contact the associated Point of Contact regarding additional use constraints and requirements for obtaining the information.

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References

https://ecos.fws.gov/ServCat/Reference/Profile/73862

Dates

Metadata Created Date January 29, 2020
Metadata Updated Date January 29, 2020

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Created Date January 29, 2020
Metadata Updated Date January 29, 2020
Publisher Fish and Wildlife Service
Unique Identifier FWS_ServCat_73862
Maintainer
Brent Frakes
Maintainer Email
Public Access Level restricted public
Bureau Code 010:18
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID C:\Program Files (x86)\FWS\DataStore\Application\OpenData\FWS_ServCat_v1_1.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Data Quality true
Harvest Object Id e31d1425-46a2-4531-ba85-a9723849e5ba
Harvest Source Id 5b7e4031-1e2d-428b-92e2-56554bbd7371
Harvest Source Title DOI Open Data
Data First Published 2015-02-01
Homepage URL https://ecos.fws.gov/ServCat/Reference/Profile/73862
Data Last Modified 2015-02-01
Program Code 010:094, 010:028
Related Documents "https://ecos.fws.gov/ServCat/Reference/Profile/73862"
Rights The information resource is proprietary and/or copyrighted. Access to this information by the public is very limited. Please contact the associated Point of Contact regarding additional use constraints and requirements for obtaining the information.
Source Datajson Identifier true
Source Hash e71052c2434243cfc28788e4db8b9c48d4848cdc
Source Schema Version 1.1
Category "Published Report"

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