Jack Hatfield
@jackhhatfield.bsky.social
I am a researcher in the fields of landscape, community and functional ecology
Reposted by Jack Hatfield
🧩Human modification does not always lead to a biotic homogenisation.
Using a scenario-based approach, we found that beta diversity increased despite reductions in local alpha diversity, thereby maintaining gamma diversity, when relatively natural landscapes were modified into mixed landscapes.
Using a scenario-based approach, we found that beta diversity increased despite reductions in local alpha diversity, thereby maintaining gamma diversity, when relatively natural landscapes were modified into mixed landscapes.
February 3, 2026 at 1:57 PM
🧩Human modification does not always lead to a biotic homogenisation.
Using a scenario-based approach, we found that beta diversity increased despite reductions in local alpha diversity, thereby maintaining gamma diversity, when relatively natural landscapes were modified into mixed landscapes.
Using a scenario-based approach, we found that beta diversity increased despite reductions in local alpha diversity, thereby maintaining gamma diversity, when relatively natural landscapes were modified into mixed landscapes.
This study used five very different case studies but there is still much more to be explored.
January 7, 2026 at 5:15 PM
This study used five very different case studies but there is still much more to be explored.
This challenges the view that widespread species are the main drivers of biotic homogenisation. Our work also suggests that conservation interventions to increase localised species occurrence are likely to have the most impact on limiting homogenisation.
January 7, 2026 at 5:15 PM
This challenges the view that widespread species are the main drivers of biotic homogenisation. Our work also suggests that conservation interventions to increase localised species occurrence are likely to have the most impact on limiting homogenisation.
Our results were also influenced by the level of nestedness found within the set of assemblages.
January 7, 2026 at 5:15 PM
Our results were also influenced by the level of nestedness found within the set of assemblages.
By comparing the trends in individual species occurrence to their beta-diversity contributions we found that the most widespread species directly contributed very little to beta-diversity change. The main influence was found to be the balance of declining versus increasing rare species.
January 7, 2026 at 5:15 PM
By comparing the trends in individual species occurrence to their beta-diversity contributions we found that the most widespread species directly contributed very little to beta-diversity change. The main influence was found to be the balance of declining versus increasing rare species.
New paper with @jonathan-gdon.bsky.social @cmbeale.bsky.social and Chris Thomas looking at species contributions to biotic homogenisation and differentiation.
@anthropocenebio.bsky.social
doi.org/10.1111/geb....
@anthropocenebio.bsky.social
doi.org/10.1111/geb....
doi.org
January 7, 2026 at 5:15 PM
New paper with @jonathan-gdon.bsky.social @cmbeale.bsky.social and Chris Thomas looking at species contributions to biotic homogenisation and differentiation.
@anthropocenebio.bsky.social
doi.org/10.1111/geb....
@anthropocenebio.bsky.social
doi.org/10.1111/geb....
Thanks! Yes, I can imagine the volume is a problem and many people don’t change from the default CC-BY-NC. I’ll try and go again soon and fill you in a recording form.
September 29, 2025 at 4:16 PM
Thanks! Yes, I can imagine the volume is a problem and many people don’t change from the default CC-BY-NC. I’ll try and go again soon and fill you in a recording form.
Do you use records from iNaturalist? I went there and added a few during York City Nature Challenge. Also looks to be quite a few other records
September 29, 2025 at 2:15 PM
Do you use records from iNaturalist? I went there and added a few during York City Nature Challenge. Also looks to be quite a few other records
Reposted by Jack Hatfield
REVIEW
The Greatest Extinction Event in 66 Million Years? Contextualising Anthropogenic Extinctions
🔗 buff.ly/qPG3mEa
@jackhhatfield.bsky.social @anthropocenebio.bsky.social
The Greatest Extinction Event in 66 Million Years? Contextualising Anthropogenic Extinctions
🔗 buff.ly/qPG3mEa
@jackhhatfield.bsky.social @anthropocenebio.bsky.social
September 17, 2025 at 4:59 PM
REVIEW
The Greatest Extinction Event in 66 Million Years? Contextualising Anthropogenic Extinctions
🔗 buff.ly/qPG3mEa
@jackhhatfield.bsky.social @anthropocenebio.bsky.social
The Greatest Extinction Event in 66 Million Years? Contextualising Anthropogenic Extinctions
🔗 buff.ly/qPG3mEa
@jackhhatfield.bsky.social @anthropocenebio.bsky.social
This paper was a huge collaborative effort built from a workshop series bringing together ecologists and paleobiologists. I would like to thank all those that made it possible and funding from
@anthropocenebio.bsky.social
@anthropocenebio.bsky.social
September 4, 2025 at 10:46 AM
This paper was a huge collaborative effort built from a workshop series bringing together ecologists and paleobiologists. I would like to thank all those that made it possible and funding from
@anthropocenebio.bsky.social
@anthropocenebio.bsky.social
We know that human influence is global and systems are changing rapidly. The placing of current extinctions in context does not negate the need to address known issues many of which clearly impact the longer term prospects of the biosphere
September 4, 2025 at 10:46 AM
We know that human influence is global and systems are changing rapidly. The placing of current extinctions in context does not negate the need to address known issues many of which clearly impact the longer term prospects of the biosphere
The current event is still smaller however than events labelled mass extinctions such as that at the end of the Cretaceous. Much uncertainty remains around any of these comparisons. We therefore also discuss the issues of comparing different data and the need for multiple lines of evidence
September 4, 2025 at 10:46 AM
The current event is still smaller however than events labelled mass extinctions such as that at the end of the Cretaceous. Much uncertainty remains around any of these comparisons. We therefore also discuss the issues of comparing different data and the need for multiple lines of evidence
In our new article just out we examine the current extinction event in the context of the longer fossil record. We conclude it is likely the greatest event in the last 66 million years
doi.org/10.1111/gcb....
doi.org/10.1111/gcb....
The Greatest Extinction Event in 66 Million Years? Contextualising Anthropogenic Extinctions
Species and ecosystems are changing rapidly in response to human actions, but how does this compare with the deeper past? We review and compare the current extinction event to those over the last 66 ...
doi.org
September 4, 2025 at 10:46 AM
In our new article just out we examine the current extinction event in the context of the longer fossil record. We conclude it is likely the greatest event in the last 66 million years
doi.org/10.1111/gcb....
doi.org/10.1111/gcb....
Reposted by Jack Hatfield
Join one of the world's largest community science events!
The 2025 City Nature Challenge (CNC) runs in York from 25-28 April. Show your love of nature & improve understanding of York's biodiversity by taking photos of wild plants & animals & sharing them with York CNC.
Learn more: lnkd.in/ehaeMMEn
The 2025 City Nature Challenge (CNC) runs in York from 25-28 April. Show your love of nature & improve understanding of York's biodiversity by taking photos of wild plants & animals & sharing them with York CNC.
Learn more: lnkd.in/ehaeMMEn
April 4, 2025 at 8:24 AM
Join one of the world's largest community science events!
The 2025 City Nature Challenge (CNC) runs in York from 25-28 April. Show your love of nature & improve understanding of York's biodiversity by taking photos of wild plants & animals & sharing them with York CNC.
Learn more: lnkd.in/ehaeMMEn
The 2025 City Nature Challenge (CNC) runs in York from 25-28 April. Show your love of nature & improve understanding of York's biodiversity by taking photos of wild plants & animals & sharing them with York CNC.
Learn more: lnkd.in/ehaeMMEn
Seven for a secret never to be told….
March 21, 2025 at 12:50 PM
Seven for a secret never to be told….
Great to see my first Beefly of the year today! #BeeFlyWatch
March 20, 2025 at 6:55 PM
Great to see my first Beefly of the year today! #BeeFlyWatch
I’m aiming to increase my species count on @inaturalist.bsky.social by 500 this year so was great to see this amazing caterpillar on a recent trip to Exeter
www.inaturalist.org/observations...
www.inaturalist.org/observations...
Oak Eggar (Lasiocampa quercus)
Oak Eggar from Stocker Road, Exeter, England, GB on February 6, 2025 at 12:23 PM by jhatfield
www.inaturalist.org
February 13, 2025 at 12:45 PM
I’m aiming to increase my species count on @inaturalist.bsky.social by 500 this year so was great to see this amazing caterpillar on a recent trip to Exeter
www.inaturalist.org/observations...
www.inaturalist.org/observations...
Reposted by Jack Hatfield
We are still recruiting Brazilian experts in species ID at Pivotal. It's remote flexible work so a really handy side gig.
If you can identify Brazilian plants or mammals from photos, of frogs, bats or birds from audio, please apply! 🧪
www.researchgate.net/job/1018369_...
If you can identify Brazilian plants or mammals from photos, of frogs, bats or birds from audio, please apply! 🧪
www.researchgate.net/job/1018369_...
REMOTE ROLE FOR ECOLOGISTS, NATURALISTS, AND TAXONOMIC EXPERTS at Pivotal Future in London, UNITED KINGDOM
Jan 2, 2025 | Ecologists, Naturalists, and Taxonomic Experts Can you identify birds, bats or frogs from acoustic data? Or can you identify plants,... | EXPIRES IN 4 DAYS
www.researchgate.net
January 28, 2025 at 11:49 AM
We are still recruiting Brazilian experts in species ID at Pivotal. It's remote flexible work so a really handy side gig.
If you can identify Brazilian plants or mammals from photos, of frogs, bats or birds from audio, please apply! 🧪
www.researchgate.net/job/1018369_...
If you can identify Brazilian plants or mammals from photos, of frogs, bats or birds from audio, please apply! 🧪
www.researchgate.net/job/1018369_...
Reposted by Jack Hatfield
🚨Fully-Funded UK PhD Opportunity!🚨
I’m hiring a #PhD exploring the complexities of #biodiversity change across space and time 🌐. Join @cmbeale.bsky.social and me at #York and for this exciting opportunity!
Please share and/or message me if interested. More info and how to apply: shorturl.at/Zu7ED
I’m hiring a #PhD exploring the complexities of #biodiversity change across space and time 🌐. Join @cmbeale.bsky.social and me at #York and for this exciting opportunity!
Please share and/or message me if interested. More info and how to apply: shorturl.at/Zu7ED
November 28, 2024 at 8:11 PM
🚨Fully-Funded UK PhD Opportunity!🚨
I’m hiring a #PhD exploring the complexities of #biodiversity change across space and time 🌐. Join @cmbeale.bsky.social and me at #York and for this exciting opportunity!
Please share and/or message me if interested. More info and how to apply: shorturl.at/Zu7ED
I’m hiring a #PhD exploring the complexities of #biodiversity change across space and time 🌐. Join @cmbeale.bsky.social and me at #York and for this exciting opportunity!
Please share and/or message me if interested. More info and how to apply: shorturl.at/Zu7ED
I often see this cat sat here on my way to work. Seems an odd spot but I think I’ve figured it out. The cabinet kicks out a fair amount of heat. Is this an example of individuals adjusting their behaviour to microclimatic conditions?
November 19, 2024 at 8:27 AM
I often see this cat sat here on my way to work. Seems an odd spot but I think I’ve figured it out. The cabinet kicks out a fair amount of heat. Is this an example of individuals adjusting their behaviour to microclimatic conditions?