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The insect apocalypse, and why it matters

Current biology, 2019-10, Vol.29 (19), p.R967-R971 [Peer Reviewed Journal]

2019 Elsevier Ltd ;ISSN: 0960-9822 ;EISSN: 1879-0445 ;DOI: 10.1016/j.cub.2019.06.069

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  • Title:
    The insect apocalypse, and why it matters
  • Author: Goulson, Dave
  • Is Part Of: Current biology, 2019-10, Vol.29 (19), p.R967-R971
  • Description: The majority of conservation efforts and public attention are focused on large, charismatic mammals and birds such as tigers, pandas and penguins, yet the bulk of animal life, whether measured by biomass, numerical abundance or numbers of species, consists of invertebrates such as insects. Arguably, these innumerable little creatures are far more important for the functioning of ecosystems than their furry or feathered brethren, but until recently we had few long-term data on their population trends. Recent studies from Germany and Puerto Rico suggest that insects may be in a state of catastrophic population collapse: the German data describe a 76% decline in biomass over 26 years, while the Puerto Rican study estimates a decline of between 75% and 98% over 35 years. Corroborative evidence, for example from butterflies in Europe and California (which both show slightly less dramatic reductions in abundance), suggest that these declines are not isolated. The causes are much debated, but almost certainly include habitat loss, chronic exposure to pesticides, and climate change. The consequences are clear; insects are integral to every terrestrial food web, being food for numerous birds, bats, reptiles, amphibians and fish, and performing vital roles such as pollination, pest control and nutrient recycling. Terrestrial and freshwater ecosystems will collapse without insects. These studies are a warning that we may have failed to appreciate the full scale and pace of environmental degradation caused by human activities in the Anthropocene. Though threats to charismatic animals, such as birds and mammals, garner most of the public’s attention, Goulson makes the case that much more attention should be paid to insects, which provide many important ecosystem services and have experienced dramatic declines recently.
  • Publisher: Elsevier Ltd
  • Language: English
  • Identifier: ISSN: 0960-9822
    EISSN: 1879-0445
    DOI: 10.1016/j.cub.2019.06.069
  • Source: Open Access: Cell Press Free Archives
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