Colin Levings 🇨🇦
@cdlevings.bsky.social
Retired/active fisheries scientist-oceanographer - interested in estuaries&salmonids, benthos, fjords, nautical history & bunch other things. Author Salmonids in Estuaries http://bit.ly/2FrfJoy. Sailed on Western Flyer 22 y after Ricketts. colinlevings.ca
Riparian on its way to detritus and food web in lower Fraser R -recalled a 1955 Russian paper on Lena R. delta an early freshwater tidal fish food web. 1 and 2 (fry) is iconic Taimen/Hucho). Draft fish name translations. Pirozhnikov P. L. 1955. Questions in Ichthyology Vol 3: 164-185 (in Russian
November 2, 2025 at 2:59 AM
Riparian on its way to detritus and food web in lower Fraser R -recalled a 1955 Russian paper on Lena R. delta an early freshwater tidal fish food web. 1 and 2 (fry) is iconic Taimen/Hucho). Draft fish name translations. Pirozhnikov P. L. 1955. Questions in Ichthyology Vol 3: 164-185 (in Russian
Chromatophores were working overtime on this spawned out chum salmon from the Chehalis River. BC. Image from my grandson Erik Levings. #marinelife
October 21, 2025 at 8:25 PM
Chromatophores were working overtime on this spawned out chum salmon from the Chehalis River. BC. Image from my grandson Erik Levings. #marinelife
There is nothing as soothing as a tranquil stream flowing through the rain forest. In this case, Anderson Creek near Madeira Park, BC.
October 18, 2025 at 3:20 AM
There is nothing as soothing as a tranquil stream flowing through the rain forest. In this case, Anderson Creek near Madeira Park, BC.
Shallow and deep ecosystems in the Salish Sea, BC Canada 1. food web in real time - an octopus was still alive in the esophagus of a ling cod (Ophiodon elongatus) after it was caught 2. at high tide, a moon jelly moved into the marine riparian - fir tree branches are reflected in the image.
September 17, 2025 at 10:50 PM
Shallow and deep ecosystems in the Salish Sea, BC Canada 1. food web in real time - an octopus was still alive in the esophagus of a ling cod (Ophiodon elongatus) after it was caught 2. at high tide, a moon jelly moved into the marine riparian - fir tree branches are reflected in the image.
Reposted by Colin Levings 🇨🇦
Really cool paper. You can see the point on the time series where #capitalism was invented!
🚨Paper alert
Steve Campana et al rewrite the history of Atlantic cod and the #Iceland ground fishery
A must read!
#Fish #Fisheries #OceansPast
Mortality drives production dynamics of Atlantic cod through 1100 years of commercial fishing | Science Advances www.science.org/doi/10.1126/...
Steve Campana et al rewrite the history of Atlantic cod and the #Iceland ground fishery
A must read!
#Fish #Fisheries #OceansPast
Mortality drives production dynamics of Atlantic cod through 1100 years of commercial fishing | Science Advances www.science.org/doi/10.1126/...
Mortality drives production dynamics of Atlantic cod through 1100 years of commercial fishing
Fishing in the Viking era did not affect the Icelandic cod population, but foreign markets in the 14th century changed everything.
www.science.org
February 6, 2025 at 4:43 PM
Really cool paper. You can see the point on the time series where #capitalism was invented!
Interesting review paper on non-native plant species and riverbanks. Topic likely relevant to estuaries too.
Hardwick, J., et al. "The role of non-native plant species in modulating riverbank erosion: a systematic review." River Research and Applications (2025). doi.org/10.1002/rra....
Hardwick, J., et al. "The role of non-native plant species in modulating riverbank erosion: a systematic review." River Research and Applications (2025). doi.org/10.1002/rra....
January 24, 2025 at 7:13 PM
Interesting review paper on non-native plant species and riverbanks. Topic likely relevant to estuaries too.
Hardwick, J., et al. "The role of non-native plant species in modulating riverbank erosion: a systematic review." River Research and Applications (2025). doi.org/10.1002/rra....
Hardwick, J., et al. "The role of non-native plant species in modulating riverbank erosion: a systematic review." River Research and Applications (2025). doi.org/10.1002/rra....
Reposted by Colin Levings 🇨🇦
📣 Exciting news! The Nippon Foundation and Scottish Association For Marine Science are embarking on a groundbreaking deep-sea research project to study "Dark Oxygen' – a revolutionary discovery of oxygen production in complete darkness on the #oceanfloor.
January 18, 2025 at 8:38 AM
📣 Exciting news! The Nippon Foundation and Scottish Association For Marine Science are embarking on a groundbreaking deep-sea research project to study "Dark Oxygen' – a revolutionary discovery of oxygen production in complete darkness on the #oceanfloor.
Aviation enabled our estuary studies British Columbia coast. Studies of mid coast fjords sometimes required flying to meet a ship eg Mallard from YVR sometimes climbed an hour to get over the mountains. CCG chopper flew us to Homathko R estuary. This is how we collected data in remote areas. 🌊🪸🐛
January 13, 2025 at 5:32 PM
Aviation enabled our estuary studies British Columbia coast. Studies of mid coast fjords sometimes required flying to meet a ship eg Mallard from YVR sometimes climbed an hour to get over the mountains. CCG chopper flew us to Homathko R estuary. This is how we collected data in remote areas. 🌊🪸🐛
Animals of the marine riparian on the Salish Sea
Black tail deer and Blue Heron🦅🦌🌊🌲
Black tail deer and Blue Heron🦅🦌🌊🌲
January 2, 2025 at 4:30 AM
Animals of the marine riparian on the Salish Sea
Black tail deer and Blue Heron🦅🦌🌊🌲
Black tail deer and Blue Heron🦅🦌🌊🌲
Collembola, chironomids and mites are some of the inverts found in the marine riparian zone in the Salish Sea, British Columbia. publications.gc.ca/collections/... gives details on invertebrates&food webs esp re juvenile salmon.
See doi.org/10.1603/0046... for vegetation-invert connections
🐙 🌊
See doi.org/10.1603/0046... for vegetation-invert connections
🐙 🌊
December 16, 2024 at 3:42 AM
Collembola, chironomids and mites are some of the inverts found in the marine riparian zone in the Salish Sea, British Columbia. publications.gc.ca/collections/... gives details on invertebrates&food webs esp re juvenile salmon.
See doi.org/10.1603/0046... for vegetation-invert connections
🐙 🌊
See doi.org/10.1603/0046... for vegetation-invert connections
🐙 🌊
Always intrigued by how the high tide marks the edge of the marine riparian zone in the Salish Sea, British Columbia. Read about it here -https://publications.gc.ca/collections/collection_2015/mpo-dfo/Fs70-5-2001-109-eng.pdf - includes food web collections to juvenile salmon.
December 15, 2024 at 7:28 PM
Always intrigued by how the high tide marks the edge of the marine riparian zone in the Salish Sea, British Columbia. Read about it here -https://publications.gc.ca/collections/collection_2015/mpo-dfo/Fs70-5-2001-109-eng.pdf - includes food web collections to juvenile salmon.
British Columbia estuarine gammarid amphipod redux – see attached my past squibs. Scope for new work on indicator G. setosus colinlevings.ca/about/amphip... in BC fjords re changing temp & glacier retreat. Beasts are key estuarine salmon food in north temperate bit.ly/2FrfJoy p 98, 102
#addOcean
🌊
December 11, 2024 at 9:38 PM
British Columbia estuarine gammarid amphipod redux – see attached my past squibs. Scope for new work on indicator G. setosus colinlevings.ca/about/amphip... in BC fjords re changing temp & glacier retreat. Beasts are key estuarine salmon food in north temperate bit.ly/2FrfJoy p 98, 102
#addOcean
🌊
Undersea cables in the news these days. Way back in the day we sampled a telephone cable being recovered in the Salish Sea British Columbia and found 15 classes of organisms on it. The cable had been laid for 53 y.
waves-vagues.dfo-mpo.gc.ca/library-bibl...
waves-vagues.dfo-mpo.gc.ca/library-bibl...
December 1, 2024 at 6:20 PM
Undersea cables in the news these days. Way back in the day we sampled a telephone cable being recovered in the Salish Sea British Columbia and found 15 classes of organisms on it. The cable had been laid for 53 y.
waves-vagues.dfo-mpo.gc.ca/library-bibl...
waves-vagues.dfo-mpo.gc.ca/library-bibl...
My side-gig in recent years -writing some West Coast marine ecology history items. It’s been fun -see attached papers on Ed Ricketts (Steinbeck friend) work in British Columbia; My memoir; notable cruise of USFCS Albatross in Salish Sea; History of ocean perch exploitation in the Gulf of Alaska.
November 26, 2024 at 11:09 PM
My side-gig in recent years -writing some West Coast marine ecology history items. It’s been fun -see attached papers on Ed Ricketts (Steinbeck friend) work in British Columbia; My memoir; notable cruise of USFCS Albatross in Salish Sea; History of ocean perch exploitation in the Gulf of Alaska.
Learned so much helping with this review paper on ecology and ocgy of land-ocean links, spearheaded by Brian Hunt @ubcoceans.bsky.social. oceans, small watersheds, mini estuaries, mountains, fjords, food webs #oceanography
@earth2ocean.bsky.social
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
November 21, 2024 at 4:56 PM
Learned so much helping with this review paper on ecology and ocgy of land-ocean links, spearheaded by Brian Hunt @ubcoceans.bsky.social. oceans, small watersheds, mini estuaries, mountains, fjords, food webs #oceanography
@earth2ocean.bsky.social
aslopubs.onlinelibrary.wiley.com/doi/10.1002/...
Mink enjoying a drink on a hot day at Pender Harbour BC
July 9, 2024 at 10:50 PM
Mink enjoying a drink on a hot day at Pender Harbour BC
ow.ly/pTgE50S1yyl
Good stories here by Nick Rahaim about the fishing life of the Western Flyer after her 1940 trip to Sea of Cortez with Ricketts and Steinbeck. Includes a clip of my first fisheries job when I worked aboard her as a tech for the Halibut Commission. www.cnrs-scrn.org/argonauta/pd...
Good stories here by Nick Rahaim about the fishing life of the Western Flyer after her 1940 trip to Sea of Cortez with Ricketts and Steinbeck. Includes a clip of my first fisheries job when I worked aboard her as a tech for the Halibut Commission. www.cnrs-scrn.org/argonauta/pd...
Fish Stories: Salty Tales from the Western Flyer’s Decades at Sea – Western Flyer Foundation
ow.ly
June 1, 2024 at 3:32 AM
ow.ly/pTgE50S1yyl
Good stories here by Nick Rahaim about the fishing life of the Western Flyer after her 1940 trip to Sea of Cortez with Ricketts and Steinbeck. Includes a clip of my first fisheries job when I worked aboard her as a tech for the Halibut Commission. www.cnrs-scrn.org/argonauta/pd...
Good stories here by Nick Rahaim about the fishing life of the Western Flyer after her 1940 trip to Sea of Cortez with Ricketts and Steinbeck. Includes a clip of my first fisheries job when I worked aboard her as a tech for the Halibut Commission. www.cnrs-scrn.org/argonauta/pd...
Sediment data (size, trace ele, chlor, pororsity, C,N)), meiofauna & macrofauna incl sea whips on beam-trawl &trap-transects Clio Channel, Broughton Arch. BC, CDN.Near Kalugwis Available thanks to colleague-Terri Sutherland co-lead bit.ly/3J6ZbBA doi.org/10.1002/aqc....
April 8, 2024 at 10:17 PM
Sediment data (size, trace ele, chlor, pororsity, C,N)), meiofauna & macrofauna incl sea whips on beam-trawl &trap-transects Clio Channel, Broughton Arch. BC, CDN.Near Kalugwis Available thanks to colleague-Terri Sutherland co-lead bit.ly/3J6ZbBA doi.org/10.1002/aqc....
Sediment data (size, trace elements, chlorophyll, pororsity, C,N)), meiofauna & macrofauna incl sea whips on beam-trawl & trap-transects Clio Channel, Broughton Arch. Near Kalugwis Available thanks to colleague-Terri Sutherland co-lead bit.ly/3J6ZbBA doi.org/10.1002/aqc.... troffe pics
April 8, 2024 at 10:12 PM
Sediment data (size, trace elements, chlorophyll, pororsity, C,N)), meiofauna & macrofauna incl sea whips on beam-trawl & trap-transects Clio Channel, Broughton Arch. Near Kalugwis Available thanks to colleague-Terri Sutherland co-lead bit.ly/3J6ZbBA doi.org/10.1002/aqc.... troffe pics
Report from unique detailed surface trawl survey - Chinook salmon fry-smolt feeding across Fraser River BC Canada tidal freshwater channel wrt possible food sources from local & upstream habitat. From baseline sampling 1988. Thanks co-authors for great assistance. bit.ly/3Ux2OHF
February 29, 2024 at 11:28 PM
Report from unique detailed surface trawl survey - Chinook salmon fry-smolt feeding across Fraser River BC Canada tidal freshwater channel wrt possible food sources from local & upstream habitat. From baseline sampling 1988. Thanks co-authors for great assistance. bit.ly/3Ux2OHF