Marine ecologist. Fan of kelp forests, regime shifts and resilience. Cold water sailor, bluenoser and diver. DECRA Fellow at UWA. Researcher at IMR.
Perth, Australia
Joined August 2012
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Karen Filbee-Dexter retweeted
Article: Coastal seaweed transported to the open ocean contributes ~3-4% of the particulate organic carbon sinking into the deeper ocean
@filbeek @pessa_3 @Dortekrause @UWAResearch @NBFNNetwork @twernberg @NIVAkelp @DanSmale1 @krumkir @carlosduartephd
nature.com/articles/s41561-0…
Global #seaweed forests export 56 million tonnes of carbon (15% of their production) to the deep ocean annually. These biodiverse #blueforests are overlooked in the global ocean #carbon budget. We provide national estimates of this C #sink rdcu.be/dIKup @NatureGeosci
How effective are #MPAs for conserving #kelp #forests? Our perspective shows they can help with some drivers of loss like grazing, but often fail to protect against ocean warming and coastal darkening - 2 main reasons we are losing kelp forests globally! doi.org/10.1111/jpy.13446
Happy International Women's day! Shout out to the inspiring female mentors, collaborators and expanders who make this career bright! 🌱🌊🩷@evaramirezllodr @MelindaAColeman @krumkir @ColetteFeehan @GeorgeValentin_ @Dortekrause @TrineBekkby @_AMeta @TaylorSimpkins5 @CatrionaHurd
Karen Filbee-Dexter retweeted
I am pleased to share our Perspective article in @PNASNews exploring photosynthetic production occurring on the elusive Arctic seafloor.
pnas.org/doi/10.1073/pnas.23…
Karen Filbee-Dexter retweeted
Happy to share my first PhD publication in @AnnBot. We found that detrital photosynthesis is a key determinant of #kelp detrital dynamics and is more sensitive to elevated temperature than expected: doi.org/10.1093/aob/mcad167. @BiolSci_UWA @UWAOceans @ForrestResearch
ALT Probability of kelp detritus being photosynthetically viable under saturating irradiance as a function of detrital age, temperature and light. This plot is equivalent to Figure 4B in the article.
Underwater rivers export up to 50% of #kelp #carbon from shallow reefs to deep ocean, with potential for #sequestration. Our new paper shows dense shelf water transport is a major mechanism for kelp export off Australia's #GreatSouthernReef and elsewhere! doi.org/10.1038/s41598-023-5…
So great to see some #kelp forest recovery out of Nova Scotia! doi.org/10.1093/aob/mcad170
🥰 nice work by @krumkir
Karen Filbee-Dexter retweeted
Haven’t heard about #kelp? No surprise… despite covering 1/3 of the world coastlines, they remain practically absent in international governance. Check our Policy Brief in @FrontiersIn with @Filbeek @twernberg & E. Techera
doi.org/10.3389/fmars.2023.1… – at Perth, Western Australia
Karen Filbee-Dexter retweeted
We just held our 5th workshop, this time in Majorca 🇪🇸 , which focused on refining MHW definitions, adapting the approach to coastal/polar regions, and examining ecological impacts across taxa and ecosystems. Very fruitful discussions and exciting work to come.... 📈🌊🤓🌱🌞📉
Karen Filbee-Dexter retweeted
Our new piece in @Nature warns of likely marine heatwave intensification under the current/developing El Nino. Clear & urgent need to plan, monitor, manage and adapt to extreme ocean temperatures to reduce ecological and socioeconomic impacts.. nature.com/articles/d41586-0…
Karen Filbee-Dexter retweeted
Happy #PhycologyFriday! A few seaweed diversity highlights from beautiful dives around Cambridge Bay, Nunavut over the last few weeks. @POLARCanada @MuseumofNature @ArcticNet
Karen Filbee-Dexter retweeted
📢🫵👩🏻🎓👨🏾🎓PhD student wanted: '#Kelp forests in the #Anthropocene'🌊🌱🥵🇦🇺🇳🇴. Must have enthusiasm, passion, curiosity, travel bug & a strong relevant academic record. Email me cv & letter of motivation before 25 Aug #climatechange #marineheatwaves #genomics #physiology #ecology
Karen Filbee-Dexter retweeted
🐙WANTED 💕#MarineEcology, #GreatSouthernReef, #kelp forests, #seaweed, #BlueCarbon, #restoration, #ClimateChange & more? 💪coordination & communication skills? 😀in busy & dynamic environment? 🫵 join the @Filbeek & @twernberg team @uwaoceans. external.jobs.uwa.edu.au/en/…
Karen Filbee-Dexter retweeted
Seaweed forests fix large amounts of carbon. Much debate exists however on whether some of that carbon ends up sequestered, and sequestration can lead to tangible climate change mitigation. We synthesized the literature to figure this out... 🧵doi.org/10.1111/brv.12990
📸I. Garrido
Karen Filbee-Dexter retweeted
4. Antarctica, which is currently in the dead of winter, has unexpectedly failed to reform it's winter sea ice this year.
This is an exceptional deviation from the norm that has left even the most orthodox scientists dumbfounded.
xitter.cf/ZLabe/status/167700320…
With ice growth remaining slow, the record #Antarctic sea ice anomaly (negative departure from average) continues to somehow get larger in size...
Seasonal cycle graphs at zacklabe.com/antarctic-sea-i…. More info at nsidc.org/arcticseaicenews/2….
ALT Line graph time series of 2023's daily Antarctic sea ice extent anomalies in red shading compared to each year from 1979 to 2022 using shades of purple to white for each line. Anomalies are computed relative to a 1981-2010 baseline. 2023 is a negative outlier for this time of year. There is substantial interannual and daily variability. There are no clear long-term trends.
Seaweed forests are carbon sinks! Our comment has finally been released outlining flaws in Gallagher et al's claim they are carbon sources. Their study confuses #bluecarbon research and creates doubt around initiatives to protect & restore #seaweedforests! doi.org/10.1093/icesjms/fsad…
Karen Filbee-Dexter retweeted
Check our new commentary asserting that Seaweed forests are carbon sinks that may help mitigate CO2 emissions:
a comment on Gallagher et al. (2022) academic.oup.com/icesjms/art…
Karen Filbee-Dexter retweeted
(1 of 5) It’s official:
-Earth had its 4th-warmest #April.
-Southern hemisphere saw its warmest month on record.
-Global ocean temperature sets record high for #April.
bit.ly/3VXggnd
@NOAANCEI #StateOfClimate
ALT 1-April-2023-Global-Temperature-Percentiles-Map