Week 6 Flashcards
What percent of all organisms are insects
70%
how do insects dominate the world as we know it
plant reproduction, major diet items for frogs and lizards, pollinate 1/3 of the food humans depend on
T or F: insects lived through the last mass extinction
T
why did insects live through past extinctions?
very resillient, can always retreat to a refuge, can adapt on site
what are the six themes for conservation?
Philosophy, Research, Policy, Psychology, Practice, Validation
What is philosophy
Insects have intrinsic value, ecosystem services, look after insects they will look ager us
What is “research”
discovery of new information, need to understand environmental conditions
What is species level insect conservation
perserve individuals of a species, understanding metapopulations
What is landscape level insect conservation
conserving good quality landscapes will benefit many insect species
what is policy for insect conservation
IUCN red list, red list not a priority or political document
what are the main threats to insects
habitat loss due to logging, agriculture, transportation
what is insect conservation psychology
understanding human behaviour, promoting wellbeing and increasing human care for nature
what is insect conservation in practice
based on good research and sound knowledge sense, response to well informed policy, reserves,
what is “validation”
needing to understand goals and shortfalls and putting in place a new goal
what is an extinction vortex?
forces affecting small populations that cause them to spiral into a vortex of increasingly smaller populations and endanger their long-term survival.
what do they think caused the 2017-2018 decline of western monarch butterflies
late rainy season across california, severe wildfires
what are some causes of long term declines of western monarch butterflies
climate and land use factors, pesticide use, overwintering habitat loss
what are steps for conservation for western monarch butterflies
protect overwintering sites, protect monarch, protect from pesticides, protect during early spring
___% of wild plants and ___% of birds rely on insects
80, 60
what are possible reasons for grassland butterfly decline
climate change, habitat loss, fragmentation, habitat deterioration
In the paper by Hellmann et al, what were their methods
Malaise straps deployed spring-fall at 63 locations between 1989 and 2016
Insect biomass was positively related to _______ and negatively to _______
temperature, precipitation
Warming is expected to ______ insect biomass
increase
Insect declines significant in what season
summer
Overall in the paper there was abouta ____ percent decline
75
T or F: invertebrate decline exceeds vertebrates
T
