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Impact of Climate Change on Insect Populations: Case Studies and Adaptations, Lecture notes of Animal Biology
The effects of climate change on insect populations, focusing on specific case studies and adaptations. It examines how changing temperatures, weather patterns, and habitat alterations impact insect survival, reproduction, and distribution. The document highlights examples like the peppered moth, the western pine beetle, and the monarch butterfly, illustrating how these species are adapting to a changing environment. It also discusses the role of natural selection and the importance of understanding insect population dynamics in a warming world.
Typology: Lecture notes
2022/2023
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How will plants
and other
animals cope?
Adapt to the
changing
conditions within
their current
range?
Example of
industrial
melanisation
Behavioural adaptations
Univoltine
Overwinters as a prepupa
Time of entry into the soil
Up to 4 weeks difference
Density
Late
cohort
Early
cohort
Time of entry into the soil
Up to 4 weeks difference
Density
Late
cohort
Early
cohort
Warmer summers…enter soil earlier
Higher mortality!
0 10 20 30 0 5 10 15 20 Microhabitat Depth (cm) Count Shallow 0 - 15 cm below soil surface Deep 15 - 30 cm below soil surface Fall 2015 0 10 20 30 0 10 20 30 Count Fall 2016 Turnbull et al. unpublished
Number
Individual variability in thermal tolerance
Temp increase
Low Medium High
Natural selection Population density could be important
- Unsicker et al.,
Integrity of the chemical cue
Cucumber plant
Current vs current +4°C Flowers smaller Bullseye same area Relatively bigger target