Carbon Neutral: The Failure of Dung Beetles (Coleoptera: Scarabaeidae) to Affect Dung-Generated Greenhouse Gases in the Pasture
Autor: | Fallon E. Fowler, Shuijin Hu, S. S. Denning, Wes Watson |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
AcademicSubjects/SCI01382 Greenhouse Effect dung beetle Nitrous Oxide Biomass Onthophagus taurus 010603 evolutionary biology 01 natural sciences Pasture chemistry.chemical_compound Greenhouse Gases Soil tunneling dwelling Animals Ecology Evolution Behavior and Systematics Dung beetle Scarabaeidae geography geography.geographical_feature_category Ecology biology Carbon Dioxide biology.organism_classification Ecosystem Ecology Coleoptera 010602 entomology Affect chemistry Agronomy Carbon neutrality greenhouse gas Insect Science Greenhouse gas Carbon dioxide dung decomposition Cattle Methane |
Zdroj: | Environmental Entomology |
ISSN: | 1938-2936 0046-225X |
Popis: | Research suggests dung beetles can churn, aerate, and desiccate dung in ways that influence the dung and soil microbes producing greenhouse gases (GHGs). We examined the impacts of the tunneling beetle, Onthophagus taurus (Schreber), and the dwelling beetle, Labarrus pseudolividus (Balthasar), on the carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) emitted from pasture-laid bovine dung as well as their sum-total (CO2 + CH4 + N2O) effect on global warming, or their carbon dioxide equivalent (CO2e). Despite dung beetles potential effects on CH4 and N2O, the existing literature shows no ultimate CO2e reductions. We hypothesized that more dung beetles would degrade pats faster and reduce CO2e, and so we increased the average dung beetle biomass per dung volume 6.22× above previously published records, and visually documented any dung damage. However, the time effects were 2–5× greater for any GHG and CO2e (E = 0.27–0.77) than dung beetle effects alone (E = 0.09–0.24). This suggests that dung beetle communities cannot adequately reduce GHGs unless they can accelerate dung decomposition faster than time alone. |
Databáze: | OpenAIRE |
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