Sign in

Anthony Ricciardi

@ecoinvasions.bsky.social
4.4K followers 802 following 1.4K posts

Ecologist (invasive species, freshwater biodiversity, bioinvasions, aquatic ecosystems) | Professor of Biology, McGill University | Director of the Bieler School of Environment | My lab account: @ricciardilab.bsky.social

PostsRepliesMedia
Anthony Ricciardi @ecoinvasions.bsky.social · 16h
www.theguardian.com/australia-ne...
theguardian.com
‘We cannot accept foxes as part of our landscape’: the plan to save Australia’s threatened wildlife
Draft national strategy accepts the wily invasive species can’t be eradicated but outlines steps to protect native animals most at risk
000
Reposted by Anthony Ricciardi
Ivan Jaric @ivanjaric.bsky.social · 17h
A global survey shows low overall awareness of #invasivespecies and little support for their #management – a new study with a large international team led by @ananovoaperez.bsky.social now out in iScience doi.org/10.1016/j.is... #biologicalinvasions #alienspecies #nonnative #pests #conservation
0106
Reposted by Anthony Ricciardi
Richard McElreath 🐈‍⬛ @rmcelreath.bsky.social · 11/10/2026
We really need to make Meng's Big Data Paradox central to teaching, don't we? Researchers don't know this stuff bc they have never been exposed to it. But it is fundamental. (Link to paper PDF statistics.fas.harvard.edu/sites/g/file...)
3. Compensating for quality with quantity is a doomed game.
3.1. A law of large populations? Under a probabilistic sampling, a central
driving force for the stochastic behaviors of the sample mean (and alike) is the
sample size n. This is the case for the Law of Large Numbers (LLN) and for the
Central Limit Theorem (CLT), two pillars of theoretical statistics, and of much of
applied statistics because we rely on LLN and CLT to build intuitions, heuristic
arguments, or even models. However, identity (2.3) implies that once we lose control of probabilistic sampling, then the driving force behind the estimation error is
no longer the sample size n, but rather the population size N. Specifically, (2.3)
and (2.5) together imply that
(3.1) Zn,N ≡ Gn − GN

VSRS(Gn)
= ρR,G1−f
f σG
1−f
n S2
G
= √
N − 1ρR,G.
417441
Anthony Ricciardi @ecoinvasions.bsky.social · 10/10/2026
Flashback to one of the more surprising discoveries we have made in recent years: redpath-staff.mcgill.ca/ricciardi/Ri... #bioinvasions
060
Anthony Ricciardi @ecoinvasions.bsky.social · 10/10/2026
A 2008 documentary about E.O. Wilson. In one scene (~36:00) he revisits the mangrove islands where he & his former student Dan Simberloff conducted their famous field experiment in the 1960s. I love seeing their excitement as they explore their old research site! www.dailymotion.com/video/x3lbwwx
dailymotion.com
Lord of the Ants - video Dailymotion
At age 78, E.O. Wilson is still going through his "little savage" phase of boyhood exploration of the natural world. In "Lord of the Ants," NOVA profiles this soft-spoken Southerner and Harvard profes...
064
Anthony Ricciardi @ecoinvasions.bsky.social · 10/10/2026
I love Morton's (1978) candid description of Brazilian pepper (a notorious invasive tree in Florida) as having been "frivolously introduced" and whose control is opposed by "misguided plant lovers" & "profit motivated beekeepers". #bioinvasions link.springer.com/article/10.1...
050
Reposted by Anthony Ricciardi
Royal Society of Biology @rsb.org.uk · 24/09/2026
Don't miss our review of 'Ecological Explosions: The History of Biological Invasions and Invasion Science' by Daniel Simberloff, in the latest issue of The Biologist! The book looks at how the field of invasion science has grown rapidly. Read the full review: biologist.rsb.org.uk/the_expandin...
biologist.rsb.org.uk
The expanding science of biological invasions
A review from the RSB of new book, Ecological Explosions
032
Reposted by Anthony Ricciardi
MBA Library @nmbluk.bsky.social · 09/10/2026
Continuing with the cephalopod love it's #NautilusNight To shell-ebrate we have this beautiful illustration of the shell of the chambered nautilus, taken from the 18th Century book on shells by GW Knorr
Two colored scientific illustrations of nautilus shells in cross-section, showing spiral chambers and handwritten labels.
1239
Reposted by Anthony Ricciardi
Mongabay @mongabay.com · 09/10/2026
Contrary to long-held assumptions, a new study reveals that invasive species cause more severe environmental impacts in the Global South than in the Global North. In countries like Myanmar, invasive pests like golden apple snails severely disrupt smallholder farming. Fellow Esther J. reports.
mongabay.cc
Invasive species have more severe environmental impacts in Global South, study finds
The environmental impacts caused by invasive alien species are more severe in poor countries of Global South than wealthy countries of Global North, a new study finds. The study shatters a…
0158
Anthony Ricciardi @ecoinvasions.bsky.social · 09/10/2026
Quote: "Hopefully we have provided conservation managers the evidence they need to track future change and act early as the tortoises face increasing pressures from climate change, drought and invasive species."
032
Anthony Ricciardi @ecoinvasions.bsky.social · 08/10/2026
One example after another. www.science.org/content/arti...
science.org
Exclusive: An AI agent emailed hundreds of researchers for help. It told us why
To get to the bottom of this perplexing behavior, Science interviewed the agent
001
Anthony Ricciardi @ecoinvasions.bsky.social · 08/10/2026
The color/banding variation on Cepaea nemoralis has always intrigued me. It might have no adaptive significance, whereas some people have hypothesized that it aids thermoregulation. This is discussed in a classic paper by Cain & Sheppard (1954) "Natural selection in Cepaea" in the journal Genetics.
100
Anthony Ricciardi @ecoinvasions.bsky.social · 08/10/2026
www.youtube.com/watch?v=bluA...
youtube.com
Mangrove Melody (Simberloff and Wilson 1969)
YouTube video by Ecomotion Studios
010
Anthony Ricciardi @ecoinvasions.bsky.social · 08/10/2026
A nice short documentary video on one of the most famous field studies in ecology: www.nps.gov/media/video/... Below, a rare photo of young Dan Simberloff as a grad student, heading out to some Florida mangrove islands to conduct his famous experiment that tested the Theory of Island Biogeography.
Dan Simberloff, as a grad student, heading out to Florida mangrove islands to conduct his famous experiment
151
Reposted by Anthony Ricciardi
Paul Ganderton @ecogeog.bsky.social · 07/10/2026
Translocation is always going to be problematic for larger species - theconversation.com/rhinos-and-e...
theconversation.com
Rhinos and elephants can cause huge problems if reintroduced badly – here’s how to get it right
Large animals such as rhino and elephant need to be moved carefully, if they are relocated to a new reserve.
011
Anthony Ricciardi @ecoinvasions.bsky.social · 06/10/2026
041
Reposted by Anthony Ricciardi
Dezene Huber 🍁 🌻 @dezene.me · 05/10/2026
This article is excellent. "As I deconstructed my beliefs, my professors encouraged my journey, allowing me to explore new ideas through reflections and research projects." Score one for public post-secondary eduction. thetyee.ca/Opinion/2026... 🌎
thetyee.ca
I Used to Believe Climate Change Was a Hoax | The Tyee
My experience shows why local politicians need to push back against climate denialism.
13020
Anthony Ricciardi @ecoinvasions.bsky.social · 06/10/2026
academic.oup.com/bioscience/a... #bioinvasions #invasivespecies #biosecurity #astrobiology
academic.oup.com
Planetary Biosecurity: Applying Invasion Science to Prevent Biological Contamination from Space Travel
Abstract. As plans for space exploration and commercial use expand rapidly, biosecurity measures and risk assessments that inform them must adapt. Sophisti
020
Anthony Ricciardi @ecoinvasions.bsky.social · 05/10/2026
www.smithsonianmag.com/smart-news/t... #planetarybiosecurity
smithsonianmag.com
This Microscopic Fungus Survived NASA's Sterilization Protocols—and Is Potentially Hardy Enough to Contaminate Mars
The microbe was gathered from the agency's clean rooms, where experts build spacecraft in carefully controlled environments. The findings reveal gaps in the agency's procedures to prevent durable hitc...
051
Anthony Ricciardi @ecoinvasions.bsky.social · 05/10/2026
"Live trade" in plant & animals (& subsequent release) is a global driver of invasion. Example: Corbicula, one of the world's most invasive molluscs, is sold in pet stores in various countries. The photo below shows them for sale (labelled as "yellow clams") in a Montreal pet store a few yrs ago.
110
Anthony Ricciardi @ecoinvasions.bsky.social · 04/10/2026
Quote: "Cities may serve as a training ground for invasive species. Urban areas are hotter, drier, more stressful than surrounding rural landscapes, and invasive species may be adapting to those challenges [which] could then help them spread...as climate change progresses." phys.org/news/2026-10...
phys.org
Urban environments may be the ultimate training grounds for invasive species
As cities grow and urban sprawl expands, could these changing landscapes be giving invasive species a competitive edge? Scientists at the University of Florida Institute of Food and Agricultural Scien...
172
Anthony Ricciardi @ecoinvasions.bsky.social · 04/10/2026
www.cbc.ca/news/canada/...
cbc.ca
A swordfish was found on Haida Gwaii. Will more follow as waters get warmer? | CBC News
A University of British Columbia researcher says the finding is unusual but no longer unexpected due to warming waters worldwide, including in Canada.
030
Anthony Ricciardi @ecoinvasions.bsky.social · 04/10/2026
Invasion rates are not saturating in ecosystems worldwide. Invaders & their impacts are accumulating. Therefore, there is an urgent need for progress toward Target 6 of the Kunming-Montreal Global Biodiversity Framework, which calls for a substantive reduction in global invasion rates by 2030. 🧵3/3
004
Anthony Ricciardi @ecoinvasions.bsky.social · 04/10/2026
More invaders in an ecosystem =greater likelihood that one will be disruptive. And invaders can interact synergistically with each other & external stressors. Although they can also be antagonistic, there's no field evidence that high invasion rates promote resistance to further invasion & impact.
110
Anthony Ricciardi @ecoinvasions.bsky.social · 04/10/2026
Increasing rates of species invasion threaten ecosystem stability & sustainable management. In this paper, I present the argument that bioinvasion rates are a sustainability issue: redpath-staff.mcgill.ca/ricciardi/Ri... 🧵1/3...
1145
Anthony Ricciardi @ecoinvasions.bsky.social · 03/10/2026
Quote: "Biological invasions are not merely about losing species; they are also about the silent rewriting of ecosystems. From the chemistry of the soil to the rhythms of wildfires, their impacts ripple through the environment long after their arrival." theconversation.com/how-biologic...
theconversation.com
How biological invasions are silently remodelling ecosystems
Invasive alien species don’t only drive out other native species, they also dramatically transform soils, water and ecosystems. A new assessment tool aims to pinpoint the negative environmental impact...
0167
Anthony Ricciardi @ecoinvasions.bsky.social · 03/10/2026
timesofindia.indiatimes.com/world/rest-o...
timesofindia.indiatimes.com
In 2004, Little Barrier Island removed invasive Pacific rats; one year later, Cook's petrel breeding success at its hardest-hit sites jumped from 5% to 53%
On Little Barrier Island, also known as Hauturu, in New Zealand’s Hauraki Gulf, the removal of an introduced predator produced a striking change in the breeding fortunes of a native seabird. Pacific r...
063
Anthony Ricciardi @ecoinvasions.bsky.social · 03/10/2026
www.popsci.com/environment/...
popsci.com
Adult female pythons cause the most trouble in Florida
Hunting them first can help curb the invasive species.
021
Anthony Ricciardi @ecoinvasions.bsky.social · 03/10/2026
hsph.harvard.edu/news/invasiv...
hsph.harvard.edu
Invasive malaria-carrying mosquito widens spread in Africa | Harvard T.H. Chan School of Public Health
Anopheles stephensi, a mosquito species non-native to Africa, is spreading across the continent, complicating malaria-control efforts. How big a threat are these mosquitoes? Harvard Chan School's Flam...
022
Anthony Ricciardi @ecoinvasions.bsky.social · 03/10/2026
timesofindia.indiatimes.com/world/us/in-...
timesofindia.indiatimes.com
In 1916, the US began releasing Asian lady beetles to control aphids and scale insects; decades later Harmonia axyridis became invasive and was linked to declines of native ladybirds
The multicoloured Asian lady beetle was introduced to the United States with a clear purpose. Starting as early as 1916, agricultural officials released the insect, scientifically known as Harmonia ax...
110
Reposted by Anthony Ricciardi
McGill Bieler School of Environment @mcgillenvironment.bsky.social · 02/10/2026
With Open House coming up October 24th, we have created a new video showcasing why studying at the McGill Bieler School of Environment is a great way to begin a meaningful career in almost any domain!
youtu.be
The McGill University Bieler School of Environment
YouTube video by The Bieler School of Environment McGill University
011
Reposted by Anthony Ricciardi
IPBES @ipbes.net · 02/10/2026
"Invasive species had been a major factor in 60% of recorded global animal and plant extinctions," @theguardian.com reports, citing @ipbes.net #InvasiveAlienSpecies Assessment. How biological invasions are addressed is key for protecting biodiversity.
Man wearing a hat walking through a fiel of fresh ground at sunrise.
1239
Anthony Ricciardi @ecoinvasions.bsky.social · 02/10/2026
I couldn't be sure from the video, but it's a common species in western trout streams & it's recorded in that particular drainage. Plus, the mussels in the video look like its eastern relative M. margaritifera. Finally, the shell in your photo fits the description: linnet.geog.ubc.ca/efauna/Atlas...
010
Anthony Ricciardi @ecoinvasions.bsky.social · 02/10/2026
Most of these mussels are probably western pearlshells (Margaritifera falcata), which use trout as host fish. Western pearlshells can live up to 100 years. So some of the mussels shown here might have been born before the second world war.
181
Anthony Ricciardi @ecoinvasions.bsky.social · 01/10/2026
Quote: "As machine intelligence becomes part of science’s epistemic infrastructure, steps must be taken to ensure that researchers who did not build, own, or operate the system can still contest how ideas and evidence became a claim." www.science.org/doi/10.1126/...
science.org
Keep AI-augmented science contestable
Artificial intelligence (AI) is moving upstream in science. Systems such as AlphaFold have already transformed protein-structure prediction, while newer agentic systems can search literatures, generat...
120
Anthony Ricciardi @ecoinvasions.bsky.social · 01/10/2026
Not a compelling argument by itself. Neither Hemimysis or Echinogammarus (2 other Eurasian crustaceans introduced to the Gt Lakes) were ever found in transoceanic ballast tanks, to my knowledge. But Bytho was found as viable resting eggs in domestic ships, suggesting a potential transoceanic vector.
030
Anthony Ricciardi @ecoinvasions.bsky.social · 01/10/2026
Another example of why you should avoid using AI to write the text of journal articles.
131
Anthony Ricciardi @ecoinvasions.bsky.social · 30/09/2026
www.jcu.edu.au/news/release...
jcu.edu.au
Freshwater fish face growing extinction threat
Many of Australia's unique freshwater fish species are edging closer to extinction, with new research warning that the nation's Wet Tropics is facing an escalating conservation crisis.
022
Anthony Ricciardi @ecoinvasions.bsky.social · 29/09/2026
www.independent.co.uk/news/science...
independent.co.uk
The invasive species that may run rampant as sea levels rise
Study says estuaries are particularly vulnerable to alien species
132
Anthony Ricciardi @ecoinvasions.bsky.social · 29/09/2026
www.dailysabah.com/life/environ...
dailysabah.com
Rising seas may open new ground for invasive species: Scientists
The sea-level rise driven by climate change could help invasive marine species spread into newly flooded coastal areas, threatening biodiversity and some...
021
Reposted by Anthony Ricciardi
Plants, People, Planet @plantspeopleplanet.bsky.social · 23/09/2026
“Urban-evolved invasive species may be well suited to future climate conditions, providing them an advantage over native species and complicating management efforts,” said Luke Flory, director of the Invasion Science Institute. Read the research: nph.onlinelibrary.wiley.com/doi/10.1002/...
blogs.ifas.ufl.edu
Cities worldwide may be the ultimate training grounds for invasive species - News
Email 0 Facebook 0 Twitter 0 Reddit 0 X Linkedin 0 Stumbleupon 0 With city growth and urban sprawl, could these changing landscapes be giving invasive species a competitive edge? Scientists at the…
021
Reposted by Anthony Ricciardi
Nature Ecology & Evolution @natecoevo.nature.com · 29/09/2026
Sea-level rise may create a new front for the landward expansion of marine invaders into inundated areas. The authors project that more than two-thirds of inundated land areas would be suitable for 122 non-native animals under future sea-level-rise scenarios 🧪 www.nature.com/articles/s41...
nature.com
Global sea-level rise will create a new biological invasion front - Nature Ecology & Evolution
Sea-level rise may create a new front for the landward expansion of marine invaders into inundated areas. The authors explore the probability of this, projecting that more than two-thirds of inundated...
095
Reposted by Anthony Ricciardi
NeoBiota @neobiota.pensoft.net · 29/09/2026
🪲 An inventory of non-native insects in China has been compiled, revealing 241 species that have been primarily introduced from Asia and North America, with their numbers increasing exponentially since 1900. Learn more: doi.org/10.3897/neobiota.109.184222
022
Reposted by Anthony Ricciardi
Miguel Clavero @chikichanka.bsky.social · 28/09/2026
When Elton wrote the statement quoted below, Japanese, European and American eels were extraordinarily abundant species When Elton died (1991) all three had collapsed Everything has gone nothing but worse since then, and other eel species are now following that same extinction path (see post below)
24328
Anthony Ricciardi @ecoinvasions.bsky.social · 28/09/2026
Here is an intriguing ecological detective story involving several captivating characters, including invasive predatory fishes (catfish & basses) + an endangered native species, in the context of flow barriers & high turbidity. Some complex community ecology teased apart by Dr. Kontou & colleagues.
081
Anthony Ricciardi @ecoinvasions.bsky.social · 28/09/2026
"The argument that a species is in no danger because it is very common, is a complete fallacy; but is very often brought forward...by people who have a financial interest in destroying the animals." - Charles Elton, Animal Ecology (1927) Each of these species was very common 1-2 centuries ago.
Atlantic codAmerican bisonPassenger pigeonThylacine
02916
Anthony Ricciardi @ecoinvasions.bsky.social · 27/09/2026
A story of passion, curiosity and perseverance by a team brought together by "disruptions and despair over the Trump administration’s freezes to federal science funding". Led by a "couch microscopist" and working out of a cheap motel room, the team made a significant discovery.
031
Anthony Ricciardi @ecoinvasions.bsky.social · 26/09/2026
bsky.app/profile/ecoi...
010
Anthony Ricciardi @ecoinvasions.bsky.social · 26/09/2026
OTD in 1962, Silent Spring was published. “Nature has introduced great variety into the landscape, but man has displayed a passion for simplifying it. Thus he undoes the built-in checks and balances by which nature holds the species within bounds.” ― Rachel Carson, Silent Spring
Rachel CarsonThe front cover of Silent Spring.
26237
Reposted by Anthony Ricciardi
Vincent J Lynch 🐘🦣🦥 🦇🐋🐢🐍 @devoevomed.bsky.social · 26/09/2026
I think a bigger concern with the “dire wolves“ is that Canids are not reproductively isolated — if released these GMO “dire wolves” would interbreed with wild gray wolves, and turn them into dire wolves? And when they mate with red wolves are they now dire ones? www.nwf.org/Home/Magazin...
nwf.org
Is Synthetic Biology Worth the Risk?
Some say using synthetic biology to change the DNA of plants and animals could help species survive threats. Others say the technology is far too dicey.
292