Anthony Ricciardi

Anthony Ricciardi

@ecoinvasions.bsky.social

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

4,213 Followers 785 Following 1,085 Posts Joined Nov 2024
7 hours ago
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More than 2,500 invasive species are poised to conquer the Arctic as the ice disappears As Arctic ice retreats, more than 2,500 invasive plant species could move in and transform the region faster than expected.

Quote: "Our maps show that almost the entire Arctic could become home to alien species."
www.ecoticias.com/en/more-than...

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9 hours ago

At gem & mineral shows, and I bought many of them from a dealer in Halifax, when I lived there as a postdoc circa 2000. I don't buy often, as I am running out of shell/display space. The first thing that caught my attention from your photos was the the nice array of display cabinets you have!

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12 hours ago
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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...

By reshaping envts, invasions change the rules of existence for resident species: some will benefit & others will be harmed in ways that challenge management. Risk assessments must consider the capacity of invaders to alter the physical foundation of ecosystems. theconversation.com/how-biologic...

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1 day ago

Now I know what to charge Nature to review their papers.

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2 days ago

If you mean so-called "de-extinction" I have a blog post about it.

eternalscientistmusings.wordpress.com/2026/01/30/a...

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2 days ago
Voluta ebraea Voluta musica Scaphella junonia

These are a few of my favorite volutes on my shelves:

Voluta ebraea (massive 17 cm in length!);

Voluta musica (a knobby form that has a pattern so busy, it looks like it writes a symphony);

and one of my junonias (which, in addition to its striking spots, has a perfect unfiled lip).

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2 days ago

Invasive alien species are a top driver of global nature loss. Yet whenever it's an animal, a segment of people fanatically resists their control.

They believe it's okay to sacrifice whole native ecosystems, with 1,000s of interconnected species, rather than tackle the problem.

They're very wrong.

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2 months ago

My view of the #deextinction hype, encapsulated below.

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3 days ago

Here is the pdf: redpath-staff.mcgill.ca/ricciardi/Gr...

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5 days ago
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The Null Hypothesis is Always Wrong No two populations are identical for any trait. No two communities have the same species composition. No detectable phenotype is ever compl...

The Null Hypothesis is Always Wrong!

New blog post - check it out.

ecoevoevoeco.blogspot.com/2026/03/the-...

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6 days ago

Pines had good PR, back in the day.

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6 days ago
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SARS-like WIV1-CoV poised for human emergence | PNAS Outbreaks from zoonotic sources represent a threat to both human disease as well as the global economy. Despite a wealth of metagenomics studies, m...

Over 10 years ago, it was known that there existed SARS-like viruses (residing in Chinese horseshoe bats) that could infect human pulmonary tissue. So we don't need to invoke a 'lab leak' theory to explain the emergence of this zoonotic disease.
www.pnas.org/doi/10.1073/...

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6 days ago

As did South Africa, where introduced pine trees (which consume more water than native vegetation) threaten water supplies and fuel wildfires.

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6 days ago

This importance also applies to freshwater benthic data, which are used to evaluate changes to water quality and responses to human disturbance.

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6 days ago

As present, invasion science cannot predict the impacts of the release of novel biological entities (genetically engineered organisms, synthetic cells, hybrids) sufficiently to avoid ecological disasters. Such predictive power might be unattainable. Without it, this is reckless ecological gambling.

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1 week ago

"It will be a mammoth because it will look like a mammoth and it will act like a mammoth, and it will restore interactions to that ecosystem that mammoths had with other species," Shapiro says.

So now they claim to know how their engineered facsimiles are going to behave in the wild?
#de-extinction

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1 week ago
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New from our lab: Using the invasive round goby as a model predator, we show how model selection in functional response experiments is affected by context (habitat complexity; mobile vs immobile prey).
link.springer.com/article/10.1...

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1 week ago
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Nonnative forestry plantations: invasion epicenters? Nonnative plantations offer economic benefits but increase the risk of biological invasions worldwide. This risk is primarily driven by frequent anthropogenic disturbances and autocatalytic processes that can lead to an invasion meltdown, creating hotspots that amplify ecological impacts. This underscores the urgent need to balance economic benefits with ecosystem sustainability.

Online now: Nonnative forestry plantations: invasion epicenters?

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1 week ago
Taxonomy, the science of naming things, is under threat Taxonomists are becoming as rare as some of the species they work on, and this puts museum collections and conservation efforts under threat and increases the risk of biosecurity incursions.

Trying to manage ecosystems without the power to recognize distinct life forms is akin to trying to navigate through a world without having access to a map. theconversation.com/taxonomy-the...

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1 week ago
Taxonomy - the neglected science of discovery The University of Auckland's Tom Saunders asks why we are standing by as taxonomy is gutted and left to wither.

Taxonomic capacity is essential for enhancing ecosystem services (by allowing the discovery of new foods, biofuels, medicines), effective conservation (identifying species at risk) and managing biosecurity (identifying invasive pests & diseases). newsroom.co.nz/2019/04/21/t...

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1 week ago
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Quote: "Taxonomy rarely gets the credit, but its work to date has already contributed to the rise of agriculture, the discovery of antibiotics, and the idea of evolution."
zenodo.org/records/3648...

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1 week ago
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Opinion | To Save Life on Earth, Bring Back Taxonomy (Published 2024)

Quote: "We need to be able to interpret genetic data in a way that humans can understand and use. That's taxonomy's job. And if we want to save what's left of the vast diversity of life on Earth, we'll have to reinvest in this science."
www.nytimes.com/2024/07/07/o...

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1 week ago

It's the funding of taxonomic research & training that's dying out. Without an ability to identify life forms, we can't recognize/quantify invasions & extinctions and their impacts on ecosystems. Imagine trying to repair a complex steel structure if you can't distinguish different types of bearings.

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1 week ago
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I have a small collection of seashells - alongside fossils, skulls, meteorites, and insect specimens on shelves around the house. A few examples are shown below. You'll probably recognize several of these species. I'm partial to cowries, cones, and volutes. #molluscmonday #malacophile

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1 week ago

Globalization of the Arctic, driven by declining sea ice cover, is predicted to facilitate bioinvasions across the northern hemisphere.
See our 2017 horizon scan:
www.cell.com/trends/ecolo...

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1 week ago
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1 week ago

A reminder. bsky.app/profile/ecoi...

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2 weeks ago
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Wild pigs, giant goldfish and bugs that won't die: Invaders 'absolutely everywhere' in Canada How can we manage the species that are devastating Canada's natural ecosystems and shouldn't even be here?

vancouversun.com/feature/wild...

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2 weeks ago

A mathematical exploration of some increasingly worrying trends in peer review. Some sensible recommendations, including encouraging AEs to STOP sending out just about everything for re-review after the first round. It's become systematic and annoying. Editors should make decisions.

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2 weeks ago
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A Mysterious Salmon-Killing Affliction is a Mystery No More - bioGraphic In California, scientists tracked the source of a severe vitamin deficiency that’s killing endangered fish.

This exemplifies perfectly an inherent inability to predict eco-evolutionary trajectories. Ecology and evolution used to be called Natural History. In hindsight it is possible to explain what happened, but we often make the mistake to think we can then project what we know to predict the future. 1/

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