Why are monarch butterflies declining in the West? Understanding the importance of multiple correlated drivers
Crone EE, Pelton EM, Brown LM and others. Ecological applications : a publication of the Ecological Society of America, August 2019.
Go to the paper May need a subscription · doi:10.1002/eap.1975
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Milkweed USA. (2026). Why are monarch butterflies declining in the West? Understanding the importance of multiple correlated drivers (listing). Retrieved DATE, from https://milkweedusa.com/research/why-are-monarch-butterflies-declining-in-the-west-understanding-2019/
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"Why are monarch butterflies declining in the West? Understanding the importance of multiple correlated drivers (listing)." Milkweed USA, 2026, https://milkweedusa.com/research/why-are-monarch-butterflies-declining-in-the-west-understanding-2019/. Accessed DATE.
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Milkweed USA. "Why are monarch butterflies declining in the West? Understanding the importance of multiple correlated drivers (listing)." Last modified 2026-08-01. Accessed DATE. https://milkweedusa.com/research/why-are-monarch-butterflies-declining-in-the-west-understanding-2019/.
BibTeX
@misc{milkweedusa_researchwhyaremonarchbutterf,
title = {Why are monarch butterflies declining in the West? Understanding the importance of multiple correlated drivers (listing)},
author = {{Milkweed USA}},
year = {2026},
url = {https://milkweedusa.com/research/why-are-monarch-butterflies-declining-in-the-west-understanding-2019/},
note = {Accessed DATE}
}