Peter Flood
@pjflood.bsky.social
Postdoc at University of Michigan SEAS | Population and Community Ecologist | Fishes | Global Change | Food Webs | Girl Dad | Bibliophile
https://sites.google.com/view/peterjflood-ecology/home
https://sites.google.com/view/peterjflood-ecology/home
Pinned
Peter Flood
@pjflood.bsky.social
· Nov 5
Long‐Term and Regional‐Scale Data Reveal Divergent Trends of Different Climate Variables on Fish Body Size Over 75 Years
This research demonstrated that over the past 75 years many ages of multiple species of freshwater fishes were decreasing in length through time and with increasing water temperatures. The largest de...
onlinelibrary.wiley.com
1/ New research from our group @umich.edu in collaboration with MI DNR investigated if climate change is altering fish body size. Our team analyzed data from 13 species and 1,497 lakes from 1945-2020.
🐟 🧪 🌎🌐🌱
#climatescience #umichresearch
#blueskyscience
onlinelibrary.wiley.com/doi/10.1111/...
🐟 🧪 🌎🌐🌱
#climatescience #umichresearch
#blueskyscience
onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Peter Flood
Important discussion here
Reading this paper on causal inference and attribution (onlinelibrary.wiley.com/doi/10.1111/... 🌎🌐), I came across this discussion. I used to favour simple models, even if I thought they could be biased, until my PhD cosupervisor (a math person) asked me "why would you choose a biased model?"
January 21, 2026 at 7:05 PM
Important discussion here
Reposted by Peter Flood
If biodiversity were a company, it would dwarf the biggest corporations.
Its annual contribution to society is in the tens of trillions of dollars.
Its annual contribution to society is in the tens of trillions of dollars.
January 16, 2026 at 1:58 AM
If biodiversity were a company, it would dwarf the biggest corporations.
Its annual contribution to society is in the tens of trillions of dollars.
Its annual contribution to society is in the tens of trillions of dollars.
Reposted by Peter Flood
Not a single day in 2025 was cooler than the 1991-2020 average, on a global scale. @copernicusecmwf.bsky.social
January 14, 2026 at 9:27 PM
Not a single day in 2025 was cooler than the 1991-2020 average, on a global scale. @copernicusecmwf.bsky.social
Reposted by Peter Flood
If you are not an expert, and you find that your personal opinion differs from expert consensus and the overwhelming weight of evidence:
Consider that "the experts who study this know more about it than I do" is a more likely explanation than "I alone discovered what all the experts missed"
Consider that "the experts who study this know more about it than I do" is a more likely explanation than "I alone discovered what all the experts missed"
January 12, 2026 at 9:12 PM
If you are not an expert, and you find that your personal opinion differs from expert consensus and the overwhelming weight of evidence:
Consider that "the experts who study this know more about it than I do" is a more likely explanation than "I alone discovered what all the experts missed"
Consider that "the experts who study this know more about it than I do" is a more likely explanation than "I alone discovered what all the experts missed"
Reposted by Peter Flood
⭐Editor's Choice ⭐
Brown trout introduced into new streams can shift their body shape to match local fish within weeks!
Read more about how plasticity boosts survival in new environments and sets the stage for future adaptation 👇
https://ow.ly/LeQA50XRZRW
Brown trout introduced into new streams can shift their body shape to match local fish within weeks!
Read more about how plasticity boosts survival in new environments and sets the stage for future adaptation 👇
https://ow.ly/LeQA50XRZRW
January 9, 2026 at 4:05 PM
⭐Editor's Choice ⭐
Brown trout introduced into new streams can shift their body shape to match local fish within weeks!
Read more about how plasticity boosts survival in new environments and sets the stage for future adaptation 👇
https://ow.ly/LeQA50XRZRW
Brown trout introduced into new streams can shift their body shape to match local fish within weeks!
Read more about how plasticity boosts survival in new environments and sets the stage for future adaptation 👇
https://ow.ly/LeQA50XRZRW
Reposted by Peter Flood
For those interested in Great Lakes fish (or what I’ve been up to so far in my postdoc) I will be giving a talk for the Coregonine Science Webinar on Friday, January 9th at 12:30 EST! bit.ly/010926
January 5, 2026 at 6:35 PM
For those interested in Great Lakes fish (or what I’ve been up to so far in my postdoc) I will be giving a talk for the Coregonine Science Webinar on Friday, January 9th at 12:30 EST! bit.ly/010926
Reposted by Peter Flood
For context, carp is traditionally a popular Christmas Eve dish in parts of Central Europe, and people often keep them alive in bathtubs for a few days before the meal #25DaysofFishmas www.npr.org/sections/the...
December 25, 2025 at 12:03 AM
For context, carp is traditionally a popular Christmas Eve dish in parts of Central Europe, and people often keep them alive in bathtubs for a few days before the meal #25DaysofFishmas www.npr.org/sections/the...
Reposted by Peter Flood
New in @biolinvasions.bsky.social: I argue that accelerating invasion rates threaten ecosystem stability & sustainable management. Thus there is an urgent need for progress toward Target 6 of the Kunming-Montreal GBF, which calls for a substantive reduction in global invasion rates.
-> rdcu.be/eVlNk
-> rdcu.be/eVlNk
December 18, 2025 at 9:37 PM
New in @biolinvasions.bsky.social: I argue that accelerating invasion rates threaten ecosystem stability & sustainable management. Thus there is an urgent need for progress toward Target 6 of the Kunming-Montreal GBF, which calls for a substantive reduction in global invasion rates.
-> rdcu.be/eVlNk
-> rdcu.be/eVlNk
December 17, 2025 at 5:26 PM
Reposted by Peter Flood
hot off the press! Led by the mighty Marie Perga, including many members of the Fooδ-webs team, and kindly funded by the Foundation for Research on Biodiversity/CESAB
besjournals.onlinelibrary.wiley.com/doi/10.1111/...
besjournals.onlinelibrary.wiley.com/doi/10.1111/...
A global estimator of C and N isotope baselines for fresh waters
Baselines are the pebbles in the shoes of isotope ecologists. The extreme variability of the isotope composition of resources at the base of food webs governs the spatial differences of consumers'...
besjournals.onlinelibrary.wiley.com
December 15, 2025 at 5:29 PM
hot off the press! Led by the mighty Marie Perga, including many members of the Fooδ-webs team, and kindly funded by the Foundation for Research on Biodiversity/CESAB
besjournals.onlinelibrary.wiley.com/doi/10.1111/...
besjournals.onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Peter Flood
“If I had a wish, I wish everybody could put on a mask & snorkel and just sit there and watch fish.” @julielovesfish.bsky.social is making conservation more human and more heard. See more in #TomorrowsCatch: contentwithpurpose.co.uk/afs/tomorrow...
Julie Claussen - Tomorrow's Catch
Julie Claussen is transforming science communication in fisheries by making research more accessible by bridging science, storytelling, and conservation.
contentwithpurpose.co.uk
December 11, 2025 at 3:00 PM
“If I had a wish, I wish everybody could put on a mask & snorkel and just sit there and watch fish.” @julielovesfish.bsky.social is making conservation more human and more heard. See more in #TomorrowsCatch: contentwithpurpose.co.uk/afs/tomorrow...
Reposted by Peter Flood
Invasions are as costly as natural disasters:
From 1980 to 2019, financial losses attributed to invasive species amounted to $1.2 trillion (USD), compared to $1.9 trillion in losses caused by storms, $1.14 trillion caused by earthquakes, and $1.12 trillion due to floods. phys.org/news/2023-04...
From 1980 to 2019, financial losses attributed to invasive species amounted to $1.2 trillion (USD), compared to $1.9 trillion in losses caused by storms, $1.14 trillion caused by earthquakes, and $1.12 trillion due to floods. phys.org/news/2023-04...
Biological invasions as costly as natural disasters, study finds
By invading new environments, some alien species have caused disastrous consequences for local species and ecosystems, as well as for human activities—damage to infrastructure, crops, forest plantatio...
phys.org
December 8, 2025 at 1:04 AM
Invasions are as costly as natural disasters:
From 1980 to 2019, financial losses attributed to invasive species amounted to $1.2 trillion (USD), compared to $1.9 trillion in losses caused by storms, $1.14 trillion caused by earthquakes, and $1.12 trillion due to floods. phys.org/news/2023-04...
From 1980 to 2019, financial losses attributed to invasive species amounted to $1.2 trillion (USD), compared to $1.9 trillion in losses caused by storms, $1.14 trillion caused by earthquakes, and $1.12 trillion due to floods. phys.org/news/2023-04...
Reposted by Peter Flood
Tribes move whitefish upriver in bid to revive Great Lakes runs
Featuring @matteherbert.bsky.social
#GreatLakes
www.mlive.com/environment/...
Featuring @matteherbert.bsky.social
#GreatLakes
www.mlive.com/environment/...
Tribes move whitefish upriver in bid to revive Great Lakes runs
Biologists are releasing live whitefish in Upper Peninsula rivers to see whether they can serve as a bridge for large-scale species restoration.
www.mlive.com
December 1, 2025 at 8:19 PM
Tribes move whitefish upriver in bid to revive Great Lakes runs
Featuring @matteherbert.bsky.social
#GreatLakes
www.mlive.com/environment/...
Featuring @matteherbert.bsky.social
#GreatLakes
www.mlive.com/environment/...
Reposted by Peter Flood
A study of introductions of large herbivorous mammals outside their native range suggests they do more harm than good to local biodiversity. Only 1 in 5 impacts is positive. Positive effects on certain native species often come at a cost to other natives. #bioinvasions www.unifr.ch/news/en/3344...
Saving a species but at the expense of others?
The way to hell is paved with good intentions. In the hope of saving certain endangered species and ecosystems, some conservation projects propose the introduction of large plant-feeding mammals int...
www.unifr.ch
November 30, 2025 at 2:05 AM
A study of introductions of large herbivorous mammals outside their native range suggests they do more harm than good to local biodiversity. Only 1 in 5 impacts is positive. Positive effects on certain native species often come at a cost to other natives. #bioinvasions www.unifr.ch/news/en/3344...
🐟🌱🧪🌐🌎
Long‐Term and Regional‐Scale Data Reveal Divergent Trends of Different Climate Variables on Fish Body Size Over 75 Years
🔗 buff.ly/ZD7cqDk
@pjflood.bsky.social @kmalofs.bsky.social
🔗 buff.ly/ZD7cqDk
@pjflood.bsky.social @kmalofs.bsky.social
November 23, 2025 at 7:50 PM
🐟🌱🧪🌐🌎
Reposted by Peter Flood
A reminder, from the 2023 IPBES assessment of invasive alien species. www.theguardian.com/environment/...
Invasive species cost humans $423bn each year and threaten world’s diversity
At least 3,500 harmful invasive species recorded in every region on Earth spread by human activity, says UN report
www.theguardian.com
November 21, 2025 at 2:37 AM
A reminder, from the 2023 IPBES assessment of invasive alien species. www.theguardian.com/environment/...
Reposted by Peter Flood
Reposted by Peter Flood
#Museums had a rough 2025: New AAM Report shows lower attendance, lost grants, and less money. 🙁
Museums had a rough 2025: Report shows lower attendance, lost grants, less money
The American Alliance of Museums put out its annual industry snapshot and it's not great. Trump's targeting of museum programming had downstream effects and put a "chill on corporate philanthropy."
www.npr.org
November 11, 2025 at 7:11 PM
#Museums had a rough 2025: New AAM Report shows lower attendance, lost grants, and less money. 🙁
Reposted by Peter Flood
From Yale University Press: "PONDS: An Illustrated Guide." #Freshwater food web spread.
🧪🌿🌎🐡🪶 #wildlife #scicomm #sciviz #wildlifeart #illustration #scientificillustration #natureart #visualscicomm #sciviz #scicomm #streams #rivers #FoodWebs
🧪🌿🌎🐡🪶 #wildlife #scicomm #sciviz #wildlifeart #illustration #scientificillustration #natureart #visualscicomm #sciviz #scicomm #streams #rivers #FoodWebs
November 11, 2025 at 1:14 PM
From Yale University Press: "PONDS: An Illustrated Guide." #Freshwater food web spread.
🧪🌿🌎🐡🪶 #wildlife #scicomm #sciviz #wildlifeart #illustration #scientificillustration #natureart #visualscicomm #sciviz #scicomm #streams #rivers #FoodWebs
🧪🌿🌎🐡🪶 #wildlife #scicomm #sciviz #wildlifeart #illustration #scientificillustration #natureart #visualscicomm #sciviz #scicomm #streams #rivers #FoodWebs
Press release from UMich news about our recent paper in Global Change Biology:
news.umich.edu/fishes-young...
🐟 🌎🌐🧪🌱🌡️📉
news.umich.edu/fishes-young...
🐟 🌎🌐🧪🌱🌡️📉
Fishes, young and old, are shrinking in Michigan's inland lakes
A new study led by the University of Michigan shows that changes in climate are also changing the size of fishes in Michigan's inland lakes.
news.umich.edu
November 7, 2025 at 2:21 AM
Press release from UMich news about our recent paper in Global Change Biology:
news.umich.edu/fishes-young...
🐟 🌎🌐🧪🌱🌡️📉
news.umich.edu/fishes-young...
🐟 🌎🌐🧪🌱🌡️📉
Reposted by Peter Flood
“Behold The GARLIATH!”: Enormous “Living Fossil” Hauled From Mississippi Floodplains Stuns Scientists
www.iflscience.com/behold-the-g...
By @rachaelhfunnell.bsky.social @iflscience.com on that big Alligator Gar tagged & released @garlab.bsky.social #GarWeek
www.iflscience.com/behold-the-g...
By @rachaelhfunnell.bsky.social @iflscience.com on that big Alligator Gar tagged & released @garlab.bsky.social #GarWeek
“Behold The GARLIATH!”: Scientists Catch (And Release) An Enormous River Monster On Mississippi Floodplains
Alligator gars: putting the “gar” in gargantuan for 100 million years.
www.iflscience.com
November 5, 2025 at 3:54 PM
“Behold The GARLIATH!”: Enormous “Living Fossil” Hauled From Mississippi Floodplains Stuns Scientists
www.iflscience.com/behold-the-g...
By @rachaelhfunnell.bsky.social @iflscience.com on that big Alligator Gar tagged & released @garlab.bsky.social #GarWeek
www.iflscience.com/behold-the-g...
By @rachaelhfunnell.bsky.social @iflscience.com on that big Alligator Gar tagged & released @garlab.bsky.social #GarWeek
Reposted by Peter Flood
Reseeding the Chesapeake Bay’s underwater grasses takes combined state, volunteer effort | News From The States 🦑🧪🌎
Reseeding the Chesapeake Bay’s underwater grasses takes combined state, volunteer effort
Planting underwater grasses in the Chesapeake Bay is easier than you might think.After mixing the plants’ tiny, spherical seeds with a bucket of sand, the mixture is simply tossed off a boat into a…
www.newsfromthestates.com
November 5, 2025 at 6:28 PM
Reseeding the Chesapeake Bay’s underwater grasses takes combined state, volunteer effort | News From The States 🦑🧪🌎
1/ New research from our group @umich.edu in collaboration with MI DNR investigated if climate change is altering fish body size. Our team analyzed data from 13 species and 1,497 lakes from 1945-2020.
🐟 🧪 🌎🌐🌱
#climatescience #umichresearch
#blueskyscience
onlinelibrary.wiley.com/doi/10.1111/...
🐟 🧪 🌎🌐🌱
#climatescience #umichresearch
#blueskyscience
onlinelibrary.wiley.com/doi/10.1111/...
Long‐Term and Regional‐Scale Data Reveal Divergent Trends of Different Climate Variables on Fish Body Size Over 75 Years
This research demonstrated that over the past 75 years many ages of multiple species of freshwater fishes were decreasing in length through time and with increasing water temperatures. The largest de...
onlinelibrary.wiley.com
November 5, 2025 at 5:14 PM
1/ New research from our group @umich.edu in collaboration with MI DNR investigated if climate change is altering fish body size. Our team analyzed data from 13 species and 1,497 lakes from 1945-2020.
🐟 🧪 🌎🌐🌱
#climatescience #umichresearch
#blueskyscience
onlinelibrary.wiley.com/doi/10.1111/...
🐟 🧪 🌎🌐🌱
#climatescience #umichresearch
#blueskyscience
onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Peter Flood
1/ Carlton & Cohen (1993) described the global transport of species as "ecological roulette" (www.science.org/doi/10.1126/...), whereas Paine & Zaret (1973) equated the introduction of non-native species to ecological gambling (jamanetwork.com/journals/jam...). #bioinvasions #invasivespecies
Ecological Gambling
MOST natural ecosystems are overwhelmingly complex, and conventional ecological wisdom holds that tropical communities are more so than their temperature or higherlatitude equivalents. This belief has...
jamanetwork.com
November 1, 2025 at 5:09 AM
1/ Carlton & Cohen (1993) described the global transport of species as "ecological roulette" (www.science.org/doi/10.1126/...), whereas Paine & Zaret (1973) equated the introduction of non-native species to ecological gambling (jamanetwork.com/journals/jam...). #bioinvasions #invasivespecies