Monarch butterfly populations from western North America have declined far more dramatically than was previously known and face a greater risk of extinction than eastern monarchs, according to a new study in the journal Biological ...
Ecology
Sep 7, 2017
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1101
Monarch butterfly populations have taken a nosedive over the last 20 years, according to researchers who monitor the number of butterflies that spend the winter in Mexico every year. But organizations of citizen scientists ...
Ecology
Aug 3, 2017
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102
Adding milkweeds and other native flowering plants into midwestern agricultural lands is key to restoring monarch butterflies, with milkweed sowers from all sectors of society being critically needed for success.
Ecology
Jun 29, 2017
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11
An analysis of data in Illinois has found a link between higher county-level use of an herbicide called glyphosate and reduced abundance of adult monarch butterflies, especially in areas with concentrated agriculture. This ...
Ecology
May 17, 2017
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4
Every winter, trees on high mountains in a small area northwest of Mexico City turn orange. Close inspection reveals branches filled with brilliantly colorful monarch butterflies, rather than fiery leaves, as the eastern ...
Ecology
May 17, 2017
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3
Steep declines in the number of monarch butterflies reaching their wintering grounds in Mexico are not fully explained by fewer milkweeds in the northern part of their range, researchers report in a new study.
Ecology
Mar 14, 2017
0
220
The number of monarch butterflies wintering in Mexico dropped by 27 percent this year, reversing last year's recovery from historically low numbers, according to a study by government and independent experts released Thursday.
Ecology
Feb 9, 2017
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2139
University of Guelph researchers have pinpointed the North American birthplaces of migratory monarch butterflies that overwinter in Mexico, vital information that will help conserve the dwindling species.
Ecology
Jan 10, 2017
0
203
Canada's caribou population has reached "all-time low" levels, particularly in the eastern Arctic, where the animal was classified as endangered Monday along with the monarch butterfly, according to a committee of scientific ...
Ecology
Dec 6, 2016
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136
A special Mexican police unit has raided seven sawmills near the monarch butterfly's mountain sanctuary in a bid to prevent illegal logging threatening the insect's winter migration, officials said Tuesday.
Ecology
Sep 21, 2016
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9
