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Jonathan Chase

@jon-chase03.bsky.social

Ecologist; Biodiversity Synthesis Professor @idiv; Dad

3,852 Followers  |  393 Following  |  40 Posts  |  Joined: 13.11.2023  |  2.0387

Latest posts by jon-chase03.bsky.social on Bluesky

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Major update to BioTIME 2.0, worldโ€™s largest biodiversity time-series database BioTIME 2.0 is the largest biodiversity time-series database on the planet and gives unprecedented insight into global biodiversity.

BioTIME 2.0 - the largest biodiversity time-series database - now spans 12 million records from 553,000 locations, tracking ecosystem changes since 1874! ๐Ÿ“Š

www.idiv.de/major-update...

@uniofstandrews.bsky.social @idiv-research.bsky.social @erc.europa.eu @jon-chase03.bsky.social

05.06.2025 12:21 โ€” ๐Ÿ‘ 30    ๐Ÿ” 10    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

While 'flashy' papers are great, analyses are ephemeral. It's the data, its preservation and organization that will persist. Honored to be involved with this amazing team on what I think are some of the most important biodiversity data out there. BioTime v 2.0.

15.05.2025 19:11 โ€” ๐Ÿ‘ 33    ๐Ÿ” 13    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

You have my support!!

19.03.2025 01:51 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

It's the 'replicability' part that worries me more, as we all know how many seemingly arbitrary choices can dramatically influence outcomes.

18.03.2025 19:47 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

100% agreed. And these people are absolutely phenomenal, doing the hard (often thankless) work to ensure the next level of reproducibility.

18.03.2025 19:46 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

I like the idea. A lot. But to be honest, I would be very afraid of the outcome.

17.03.2025 00:29 โ€” ๐Ÿ‘ 5    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Species turnover does not rescue biodiversity in fragmented landscapes - Nature An analysis of habitat fragmentation using a dataset of more than 4,000 species worldwide shows that fragmentation reduces biodiversity at all scales, and that increases in ฮฒ diversity do not compensa...

What a wonderful paper!!
Really clear results and extremely important research!!
I will use it in my classes

Congrats Thiago Gonรงalves-Souza @natejsanders.bsky.social @jon-chase03.bsky.social @nickhaddad.bsky.social

www.nature.com/articles/s41...

13.03.2025 22:22 โ€” ๐Ÿ‘ 55    ๐Ÿ” 13    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Species turnover does not rescue biodiversity in fragmented landscapes - Nature An analysis of habitat fragmentation using a dataset of more than 4,000 species worldwide shows that fragmentation reduces biodiversity at all scales, and that increases in ฮฒ diversity do not compensa...

Our paper led by Thiago Gonรงalves-Souza is out. Habitat fragmentation and habitat loss reduce biodiversity. @natejsanders.bsky.social

Results from 37 studies distributed worldwide, on plants and animals, comparing continuous and fragmented landscapes.

www.nature.com/articles/s41...

12.03.2025 21:02 โ€” ๐Ÿ‘ 101    ๐Ÿ” 48    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 3

Thanks Rob, for writing such a great News & Views about our paper! A huge honor (or I guess I should write honour given your new position) to have your thoughts!

12.03.2025 20:03 โ€” ๐Ÿ‘ 14    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Habitat amount modulates biodiversity responses to fragmentation - Nature Ecology & Evolution How biodiversity responds to habitat fragmentation per se is debated. Here the authors combine metacommunity simulations with reanalysis of empirical metacommunities to show that the amount of habitat...

Is fragmentation bad or good for biodiversity? Yes!

We use a classical competition-colonization metacommunity model to show that fragmentation can increase or decrease diversity depending on the total amount of habitat in the landscape. ๐Ÿงช

www.nature.com/articles/s41...

24.06.2024 18:57 โ€” ๐Ÿ‘ 25    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

This week, embattled UCLA EEB Professor Priyanga Amarasekare faces additional disciplinary hearings. She offers a thorough defense of herself--and transparency on the history of charges & outcomes in her cases--here: pamarasekare.org

13.06.2024 07:21 โ€” ๐Ÿ‘ 7    ๐Ÿ” 6    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1
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And the Restoration Cake symbolizes Emmaโ€™s great work synthesizing restoration data!

12.06.2024 18:37 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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After 6 years of postdoc-ing with us at iDiv, the Synthesis group says goodbye to Emma Ladouceur. She had such an incredible influence on us all, scientifically and personally. We will miss her, but wish her well and onto bigger and better things at the University of Prince Edward Island!

12.06.2024 18:36 โ€” ๐Ÿ‘ 8    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

โ€œI may yet be crushed, but I have put up a ferocious fight and I hope that my efforts make it easier for others who come after me to stand up to authoritarian University administrations.โ€

11.06.2024 05:41 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

โ€œA harassment verdict, no matter how flawed, would permanently destroy my reputation and force me out of academia, and I have to try my utmost to prevent it.โ€

11.06.2024 05:41 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

โ€œAt this juncture, publicly responding to the charges against me is the only way I can protect myself.โ€

11.06.2024 05:40 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Home | My Site 3

For those following the ongoing saga of Priyanga Amarasekareโ€”a major update. She speaks out, addressing all charges! This would make for a dramatic novel or Netflix series. But no, itโ€™s the life of our brilliant and deeply caring colleague and friend.

www.pamarasekare.org

11.06.2024 05:39 โ€” ๐Ÿ‘ 4    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Uh, I really wanna know what this is!

04.05.2024 06:27 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
Ecological Society of America announces 2024 Fellows โ€“ The Ecological Society of America

Congrats to all!

But super pleased to see the early career list has Melissa Guzman, whom I was privileged to help nominate (and work with; sheโ€™s a ๐ŸŒŸ) and Diogo Provete, who is spending the next year at IDiv in my research group, on a Humboldt foundation sabbatical!

www.esa.org/blog/2024/04...

30.04.2024 19:13 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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The state of academic publishing in 3 graphs, 6 trends, and 4 thoughts Eleven years ago I shared a fairly heavily researched summary of the state of academic publishing. I mostly argued that OA (aka author pays) was a red herring and that we should really pay attention t...

๐Ÿงช๐ŸŒŽ super important post from Brian McGill.

โžก๏ธWe know academic publishing is broken;

โžก๏ธWe know for profit publishers are driving us to a breaking point;

โžก๏ธWe know weโ€™re publishing too much;

โžก๏ธWe are complicit!

dynamicecology.wordpress.com/2024/04/29/t...

29.04.2024 17:57 โ€” ๐Ÿ‘ 14    ๐Ÿ” 3    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 2
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Higher trophic levels and species with poorer dispersal traits are more susceptible to habitat loss on island fragments <em>Ecology</em> is a leading journal publishing original research and synthesis papers on all aspects of ecology, with particular emphasis on cutting-edge research and new concepts.

Congrats to Zhonghan Wang for leading this great study in Ecology looking at habitat fragmentation effects on the Thousand Island Lake islands across multiple trophic levels. Was great having him visit iDiv on a CAS scholarship from China.

doi.org/10.1002/ecy....

23.04.2024 14:22 โ€” ๐Ÿ‘ 6    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Principles of experimental design for ecology and evolution You have to enable JavaScript in your browser's settings in order to use the eReader.

Nice new modern take on the old pseudoreplication problem (here discussed much more accurately as subsampling) in experimental design. onlinelibrary.wiley.com/doi/epdf/10....

09.04.2024 10:58 โ€” ๐Ÿ‘ 12    ๐Ÿ” 11    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
The publish-or-perish culture in academia has catalysed the development of an unethical publishing system. This system is characterised by the proliferation of journals and publishers unaffiliated with learned societies or universitiesโ€” that maintain extremely large revenues and profit margins diverting funds away from the academic community. Early career researchers (ECRs) are particularly vulnerable to the consequences of this publishing system because of intersecting factors, including pressure to pursue high impact publications, rising publication costs and job insecurity. Moving towards a more ethical system requires that scientists advocate for structural change by making career choices that come with risks, many of which disproportionately impact ECRs. We illuminate major issues facing ECRs in Ecology and Evolution under the current publishing system, and propose a portfolio of actions to promote systemic change that can be implemented by ECRs and established researchers.

The publish-or-perish culture in academia has catalysed the development of an unethical publishing system. This system is characterised by the proliferation of journals and publishers unaffiliated with learned societies or universitiesโ€” that maintain extremely large revenues and profit margins diverting funds away from the academic community. Early career researchers (ECRs) are particularly vulnerable to the consequences of this publishing system because of intersecting factors, including pressure to pursue high impact publications, rising publication costs and job insecurity. Moving towards a more ethical system requires that scientists advocate for structural change by making career choices that come with risks, many of which disproportionately impact ECRs. We illuminate major issues facing ECRs in Ecology and Evolution under the current publishing system, and propose a portfolio of actions to promote systemic change that can be implemented by ECRs and established researchers.

As director of CESAB, I'm incredibly proud to share the latest article of our postdocs today in Ecology Letters. ๐Ÿ‘

They call for a more ethical academic publishing landscape but also ask to not let only the Early Career Researchers pay the price of this paradigm shift !

doi.org/10.1111/ele....

๐Ÿงช๐ŸŒ

12.03.2024 10:11 โ€” ๐Ÿ‘ 134    ๐Ÿ” 91    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 6

Just to say the editor (*ahem*) also was nervous about this. But Iโ€™m glad they got the message out there in an appropriate venue. Still have no idea where the publishing landscape is going to take us.

29.03.2024 05:04 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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UCLA Punished a Prominent Scientist for โ€˜Destructive and Harmful Conduct.โ€™ She Says Itโ€™s โ€˜Unjust Persecution.โ€™ Priyanga Amarasekare was suspended and later put on involuntary leave for breaching the Faculty Code of Conduct. She hopes that speaking out will help clear her name.

"Amarasekare knows she could get in trouble for talking about any of this, especially to a reporter. But she said sheโ€™s tired of feeling muzzled by confidentiality rules and wants to restore her reputation."

www.chronicle.com/article/ucla...

21.03.2024 05:28 โ€” ๐Ÿ‘ 2    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Was a pleasure to be there! What a great group of colleagues and wonderful science!

10.03.2024 03:44 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

๐ŸšจNew paper! Is homogenization really that more common than differentiation? - not really, our latest work shows that one pattern can be as common as the other.

Another great work and collaboration led by this amazing team๐Ÿ‘‡

22.02.2024 09:58 โ€” ๐Ÿ‘ 11    ๐Ÿ” 4    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Synthesis reveals approximately balanced biotic differentiation and homogenization Homogenization is most common at large temporal and spatial scales but is balanced by differentiation at smaller scales.

The lack of evidence for declining local diversity through time must be because everything is homogenizing, leading to larger-scale losses.

Right?!

Nope, says our analysis of 500+ meta-communities through time just published in Science Advances

๐Ÿงช๐ŸŒŽ๐ŸŸ๐ŸŒณ๐Ÿฆ‹ ๐Ÿฆ๐ŸฆŒ

www.science.org/doi/10.1126/...

22.02.2024 04:03 โ€” ๐Ÿ‘ 25    ๐Ÿ” 11    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 2

So it seems that UCLA, on top of punishing a POC professor for speaking out against racism, has also done nothing against professors for engaging in racist behavior

25.01.2024 15:47 โ€” ๐Ÿ‘ 11    ๐Ÿ” 6    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1
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Calls sDiv is the synthesis centre of iDiv

We have a new call for 'Synthesis' projects at iDiv. Looking forward to more great 'community-driven' synthesis work happening here. Feel free to reach out with questions, etc.

www.idiv.de/en/sdiv/calls

26.01.2024 17:26 โ€” ๐Ÿ‘ 15    ๐Ÿ” 16    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

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