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  1. en.wikipedia.org

    An annual decline of 5.2% in flying insect biomass found in nature reserves in Germany - about 75% loss in 26 years [1]. Insects are the most numerous and widespread class in the animal kingdom, accounting for up to 90% of all animal species. [2] [3] In the 2010s, reports emerged about the widespread decline in insect populations across multiple insect orders.
  2. Germany's "Red List" of endangered insects doesn't look alarming at first glance, says Sorg, who curates the Krefeld society's extensive collection of insect specimens. Few species are listed as extinct because they are still found in one or two sites. But that obscures the fact that many have disappeared from large areas where they were once ...
  3. journals.plos.org

    Introduction. Loss of insects is certain to have adverse effects on ecosystem functioning, as insects play a central role in a variety of processes, including pollination [1, 2], herbivory and detrivory [3, 4], nutrient cycling [] and providing a food source for higher trophic levels such as birds, mammals and amphibians.For example, 80% of wild plants are estimated to depend on insects for ...
    Author:Caspar A. Hallmann, Martin Sorg, Eelke Jongejans, Henk Siepel, Nick Hofland, Heinz Schwan, Werner St...Published:2017
  4. onlinelibrary.wiley.com

    1. Introduction. The Earth is home to an astonishing array of insects, making them the most diverse group of animals, encompassing a staggering 75%-80% of all known animal species [1 - 4].The number of insect species in the world is a topic of ongoing debate, with estimates ranging from 10 to 30 million species of insects [2 - 5], of which approximately 1.11-1.7 million have been ...
  5. illustratedcuriosity.com

    Nearly 80 percent of all flying insects appear to have disappeared from central Europe during the past 30 years. This decline is described by researchers as disastrous and they suspect the cause has to do with increased agriculture. Whole ecosystems could be threatened.
  6. 1 day agoThe insect decline syndrome 1 is a global phenomenon marked by a significant decrease in insect numbers and biomass. Insects represent more than 80% of the catalogued biological diversity on the planet and are vital for nutrient recycling, the preservation of food webs, and the pollination of most flowering plants, which includes 75% of our crops.
  7. Scientists have tracked alarming declines in domesticated honey bees, monarch butterflies, and lightning bugs. But few have paid attention to the moths, hover flies, beetles, and countless other insects that buzz and flitter through the warm months. ... the total mass of their catch had fallen by nearly 80% (see graph, below). Perhaps it was a ...

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    Decline in insect populations

    Insects are the most numerous and widespread class in the animal kingdom, accounting for up to 90% of all animal species. 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 has also been anecdotal reports of greater insect abundance earlier in the 20th century. Many car drivers know this anecdotal evidence through the windscreen phenomenon, for example. Causes for the decline in insect population are similar to those driving other biodiversity loss. They include habitat destruction, such as intensive agriculture, the use of pesticides, introduced species, and – to a lesser degree and only for some regions – the effects of climate change. An additional cause that may be specific to insects is light pollution. Wikipedia

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