https://www.nationalgeographic.com/animals/2018/07/wolf-spider-arctic-climate-change-news/

Climate Change Makes Spiders Bigger—And That’s a Good Thing
High temperatures make arctic wolf spiders ditch their favorite food, indirectly helping the environment.
The Arctic tundra is teeming with predators, just not the ones you might expect: By biomass, arctic wolf spiders outweigh arctic wolves by at least 80-to-1.
The eye-popping calculation, published today in PNAS __by National Geographic explorer Amanda Koltz, could shape our understanding of how the Arctic will respond to future climate change.
Her study reveals that at increased temperatures and population densities, arctic wolf spiders change their eating habits, starting an ecosystem-wide cascade that could change how quickly melting permafrost decomposes.

Divine Angel said:

https://www.nationalgeographic.com/animals/2018/07/wolf-spider-arctic-climate-change-news/

Climate Change Makes Spiders Bigger—And That’s a Good Thing
High temperatures make arctic wolf spiders ditch their favorite food, indirectly helping the environment.
The Arctic tundra is teeming with predators, just not the ones you might expect: By biomass, arctic wolf spiders outweigh arctic wolves by at least 80-to-1.
The eye-popping calculation, published today in PNAS __by National Geographic explorer Amanda Koltz, could shape our understanding of how the Arctic will respond to future climate change.
Her study reveals that at increased temperatures and population densities, arctic wolf spiders change their eating habits, starting an ecosystem-wide cascade that could change how quickly melting permafrost decomposes.

>>In plots with more spiders, the spiders actually ate fewer springtails. These larger springtail populations then ate more fungus, which lowered the rate of decomposition. Among the hotter plots, the one with more spiders decomposed less than plots with almost no spiders. In a way, the spiders are helping to fight climate change in the arctic tundra.<<

An unexpected result.

Maybe they’ve just never much liked springtails, and with a greater abundance of spiders can now eat more of each other.