Evan
@evanwahm.bsky.social
Aspiring Freshwater Ecologist | he/him/his
Pursuing a M.S. in Biology. Studying crayfish.
Pursuing a M.S. in Biology. Studying crayfish.
Reposted by Evan
Interested in the marbled crayfish (Procambarus virginalis) and its invasion potential?
Have a look at our recently published biological synopsis, led by @vanmierlo.bsky.social
Link: waves-vagues.dfo-mpo.gc.ca/library-bibl...
#marmorkrebs #bioinvasions
Have a look at our recently published biological synopsis, led by @vanmierlo.bsky.social
Link: waves-vagues.dfo-mpo.gc.ca/library-bibl...
#marmorkrebs #bioinvasions
January 27, 2026 at 9:47 PM
Interested in the marbled crayfish (Procambarus virginalis) and its invasion potential?
Have a look at our recently published biological synopsis, led by @vanmierlo.bsky.social
Link: waves-vagues.dfo-mpo.gc.ca/library-bibl...
#marmorkrebs #bioinvasions
Have a look at our recently published biological synopsis, led by @vanmierlo.bsky.social
Link: waves-vagues.dfo-mpo.gc.ca/library-bibl...
#marmorkrebs #bioinvasions
The Brushnose Crayfish (Procambarus pubescens), named after the prominent setae (hairlike structures) on its rostrum.
#crayfish #invertebrate 🌍🧪
#crayfish #invertebrate 🌍🧪
January 27, 2026 at 3:43 AM
The Brushnose Crayfish (Procambarus pubescens), named after the prominent setae (hairlike structures) on its rostrum.
#crayfish #invertebrate 🌍🧪
#crayfish #invertebrate 🌍🧪
Reposted by Evan
quagga mussels on the move (July 2023) #InvasiveSpecies #LakeConstance
January 17, 2026 at 1:57 PM
quagga mussels on the move (July 2023) #InvasiveSpecies #LakeConstance
Reposted by Evan
The next crayfish world congress will be in New Orleans LA: www.iaa25.com
Home | IAA25
www.iaa25.com
January 6, 2026 at 9:01 PM
The next crayfish world congress will be in New Orleans LA: www.iaa25.com
Reposted by Evan
New Issues of Freshwater Crayfish is out. Has an article by yours truly and B. Schryer on the invasive WRCrays.
January 10, 2026 at 7:21 PM
New Issues of Freshwater Crayfish is out. Has an article by yours truly and B. Schryer on the invasive WRCrays.
Reposted by Evan
Get excited! NEXT IAA is in New Orleans and registration is open www.iaa25.com
January 6, 2026 at 9:06 PM
Get excited! NEXT IAA is in New Orleans and registration is open www.iaa25.com
Reposted by Evan
We have published a biological synopsis of the marbled crayfish, Procambarus virginalis
#marmorkrebs #bioinvasions
Link: waves-vagues.dfo-mpo.gc.ca/library-bibl...
#marmorkrebs #bioinvasions
Link: waves-vagues.dfo-mpo.gc.ca/library-bibl...
December 18, 2025 at 4:18 PM
We have published a biological synopsis of the marbled crayfish, Procambarus virginalis
#marmorkrebs #bioinvasions
Link: waves-vagues.dfo-mpo.gc.ca/library-bibl...
#marmorkrebs #bioinvasions
Link: waves-vagues.dfo-mpo.gc.ca/library-bibl...
Reposted by Evan
After 4+ years of work, our article on Austropotamobius is out! We traced their 30-million-year journey across Europe, discovered hidden lineages, and finally solved some long-standing evolutionary puzzles.
The key highlight? A. bihariensis from the Apuseni Mts: a small crayfish with a big story.
The key highlight? A. bihariensis from the Apuseni Mts: a small crayfish with a big story.
December 4, 2025 at 10:29 AM
After 4+ years of work, our article on Austropotamobius is out! We traced their 30-million-year journey across Europe, discovered hidden lineages, and finally solved some long-standing evolutionary puzzles.
The key highlight? A. bihariensis from the Apuseni Mts: a small crayfish with a big story.
The key highlight? A. bihariensis from the Apuseni Mts: a small crayfish with a big story.
Reposted by Evan
The Taxonomic Distinctiveness Hypothesis (Ricciardi & Atkinson 2004) predicts that invaders with no relatives in an area will have the largest ecological impacts.
We found evidence of this for various aquatic systems. It is also supported by terrestrial studies. Eco-evolutionary context matters!
We found evidence of this for various aquatic systems. It is also supported by terrestrial studies. Eco-evolutionary context matters!
November 16, 2025 at 12:10 AM
The Taxonomic Distinctiveness Hypothesis (Ricciardi & Atkinson 2004) predicts that invaders with no relatives in an area will have the largest ecological impacts.
We found evidence of this for various aquatic systems. It is also supported by terrestrial studies. Eco-evolutionary context matters!
We found evidence of this for various aquatic systems. It is also supported by terrestrial studies. Eco-evolutionary context matters!
October 15, 2025 at 2:26 PM
Laughing Gull (Leucophaeus atricilla)
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
October 12, 2025 at 2:29 PM
Laughing Gull (Leucophaeus atricilla)
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
October 2, 2025 at 8:38 PM
August 24, 2025 at 3:54 PM
Purple Gallinule (Porphyrio martinica) at the Savannah National Wildlife Refuge
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
August 23, 2025 at 4:43 PM
Purple Gallinule (Porphyrio martinica) at the Savannah National Wildlife Refuge
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
Common Gallinule (Gallinula galeata) at the Savannah National Wildlife Refuge
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
August 21, 2025 at 2:59 PM
Common Gallinule (Gallinula galeata) at the Savannah National Wildlife Refuge
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
Anhinga (Anhinga anhinga) at the Savannah National Wildlife Refuge
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
August 20, 2025 at 1:55 PM
Anhinga (Anhinga anhinga) at the Savannah National Wildlife Refuge
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
#birds #birding #birdphotography #wildlife #wildlifephotography #nature 🪶🌍🧪
Florida Softshell Turtle (Apalone ferox) at the Savannah National Wildlife Refuge
#wildlife #wildlifephotography #nature #turtle 🐢🌍🧪
#wildlife #wildlifephotography #nature #turtle 🐢🌍🧪
August 19, 2025 at 2:55 PM
Florida Softshell Turtle (Apalone ferox) at the Savannah National Wildlife Refuge
#wildlife #wildlifephotography #nature #turtle 🐢🌍🧪
#wildlife #wildlifephotography #nature #turtle 🐢🌍🧪
Reposted by Evan
At #EOU2025 @eounion.bsky.social conference next week, we'll show new evidence implicating forestry in declines of British Marsh Tits during the era of woodland conversion in 1950/60s-1980s.
This was period of steepest decline in Marsh Tits. Why? What was going on back then? #ornithology 1/5
This was period of steepest decline in Marsh Tits. Why? What was going on back then? #ornithology 1/5
August 16, 2025 at 10:42 AM
At #EOU2025 @eounion.bsky.social conference next week, we'll show new evidence implicating forestry in declines of British Marsh Tits during the era of woodland conversion in 1950/60s-1980s.
This was period of steepest decline in Marsh Tits. Why? What was going on back then? #ornithology 1/5
This was period of steepest decline in Marsh Tits. Why? What was going on back then? #ornithology 1/5
Mischievous Bird Grasshopper (Schistocerca damnifica)
#wildlife #wildlifephotography #nature #Invert 🌍🧪
#wildlife #wildlifephotography #nature #Invert 🌍🧪
August 16, 2025 at 11:54 PM
Mischievous Bird Grasshopper (Schistocerca damnifica)
#wildlife #wildlifephotography #nature #Invert 🌍🧪
#wildlife #wildlifephotography #nature #Invert 🌍🧪
Reposted by Evan
Good morning everyone!
Here's a happy little butterfly #scape for #FlowersOnFriday 🦋🌞
Hope you have a great weekend ahead 😎
#eastcoastkin #photography #butterflies #bloomscrolling
Here's a happy little butterfly #scape for #FlowersOnFriday 🦋🌞
Hope you have a great weekend ahead 😎
#eastcoastkin #photography #butterflies #bloomscrolling
August 15, 2025 at 1:04 PM
Good morning everyone!
Here's a happy little butterfly #scape for #FlowersOnFriday 🦋🌞
Hope you have a great weekend ahead 😎
#eastcoastkin #photography #butterflies #bloomscrolling
Here's a happy little butterfly #scape for #FlowersOnFriday 🦋🌞
Hope you have a great weekend ahead 😎
#eastcoastkin #photography #butterflies #bloomscrolling
Reposted by Evan
August 14, 2025 at 2:09 PM
Reposted by Evan
Trying to capture the beautiful light on the canal tonight
August 9, 2025 at 8:29 PM
Trying to capture the beautiful light on the canal tonight
Reposted by Evan
Blessed to find this beautiful electric blue Faxonius virilis while sampling the St. Lawrence for my doctoral work! This is a fairly rare phenotype for this native North American species!
July 29, 2025 at 12:17 AM
Blessed to find this beautiful electric blue Faxonius virilis while sampling the St. Lawrence for my doctoral work! This is a fairly rare phenotype for this native North American species!
Reposted by Evan
1/ A 🧵 on some recent research by our lab on invasive crayfish:
Sheppard et al (2024) found that projected climate warming in the Great Lakes will reduce the maximum feeding rate & increase the frequency & duration of gravid states of marbled crayfish.
Read: redpath-staff.mcgill.ca/ricciardi/Sh...
Sheppard et al (2024) found that projected climate warming in the Great Lakes will reduce the maximum feeding rate & increase the frequency & duration of gravid states of marbled crayfish.
Read: redpath-staff.mcgill.ca/ricciardi/Sh...
July 9, 2025 at 3:26 AM
1/ A 🧵 on some recent research by our lab on invasive crayfish:
Sheppard et al (2024) found that projected climate warming in the Great Lakes will reduce the maximum feeding rate & increase the frequency & duration of gravid states of marbled crayfish.
Read: redpath-staff.mcgill.ca/ricciardi/Sh...
Sheppard et al (2024) found that projected climate warming in the Great Lakes will reduce the maximum feeding rate & increase the frequency & duration of gravid states of marbled crayfish.
Read: redpath-staff.mcgill.ca/ricciardi/Sh...
Reposted by Evan
