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Insects with population trends documented by the International Union for Conservation of Nature, for orders Collembola, Hymenoptera, Lepidoptera, Odonata, and Orthoptera. A 2020 meta-analysis found that globally terrestrial insects appear to be declining in abundance at a rate of about 9% per decade, while the abundance of freshwater insects appears to be increasing by 11% per decade.
Pollinator decline is the reduction in abundance of insect and other animal pollinators in many ecosystems worldwide that began being recorded at the end of the 20th century. Multiple lines of evidence exist for the reduction of wild pollinator populations at the regional level, especially within Europe and North America.
The largest study of insect declines to date gives us the best indication of how species all over the world are faring. Insects: worldwide study reveals widespread decline since 1925 Skip to main ...
[56] [57] In the 2010s, reports emerged about the widespread decline in insect populations across multiple insect orders. The reported severity shocked many observers, even though there had been earlier findings of pollinator decline. There have also been anecdotal reports of greater insect abundance earlier in the 20th century.
Scientists have been sounding the alarm about the decline in beneficial insect populations for years. Studies show that many species of bees, butterflies, and other pollinators are in serious trouble.
Federal wildlife officials on Tuesday proposed protecting the striking long-distance migrators under the Endangered Species Act after dramatic population drops. Monarch butterflies proposed for ...
More commonly insect conservation occurs indirectly, either through the setting aside of large portions of land using "wilderness preservation" as the motive, or through protection of "charismatic vertebrates". Some studies estimate that global insect populations are in rapid decline, perhaps by as much as 80% in recent decades.
These grasshoppers, like many insects around the world, are declining. Dave Rintoul, CC BY-NDThe Research Brief is a short take on interesting academic work. The big idea Grasshopper populations ...