Hans Henrik Bruun
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hhbruun.bsky.social
Hans Henrik Bruun
@hhbruun.bsky.social
1.2K followers 760 following 160 posts

Scientist, naturalist, earthling
Professor of #community.ecology, University of Copenhagen
| biodiversity | conservation | restoration | rewilding | vegetation | trait-based | seed dispersal | phytophagous insects | resurveys | legacy data | eDNA | iNatter .. more

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Hans Henrik Eduard Reventlow Bruun is a Danish sociologist and diplomat. He is an MA in political science (cand.scient.pol.) from University of Aarhus. Through nearly thirty years, he served in the Danish diplomatic mission. From 1987 ambassador to Turkey, from 1999 to France. After his retirement from the foreign service, he joined the staff at the University of Copenhagen Institute for Sociology as an adjunct professor. In his academic field, he is an expert on the philosophy of Max Weber. .. more

Environmental science 28%
Agriculture 21%
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hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · 10d
Could it be because some human activities mimicked lost megafauna impacts from the evolutionary (Pleistocene) landscapes in which species arose and developed? The Holocene has in many ways presented aberrant ecosystem properties

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · 11d
A great ecologist and scientist. His southern hemisphere perspective on “European” ecology was very stimulating and thought-provoking.

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · 15d
doi.org/10.21203/rs....
From paper to pixels - digitized maps of vascular plant distributions in Denmark in the early 20th century
Historic data are essential for quantifying changes in biodiversity and their drivers. Much legacy data remains undigitized in archives such as natural history museums, representing untapped resources...
doi.org

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · 15d
Huge thanks to Ditte, @srosbakh.bsky.social & all collaborators

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · 15d
Next step: Comparison with recent data to identify winners, lossers and drivers of change 🌳🍂🥀

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · 15d
@dittemch.bsky.social has led the digitization of the historical dot maps of plant species distribution in Denmark. After a lot of harmonization and validations, the data (10 x 10 km grid) are now out with a preprint describing the procudure.
#biodiversity_change #legacy_data

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · 22d
@skjoldsoendergaard.bsky.social something for you?

Reposted by Hans Henrik Bruun

nymann76.bsky.social
Peter Nymann Eriksen @nymann76.bsky.social · Nov 13
Så er udkast til habitatkonsekvensvurderingen af Tangeværket ude!
Tak til @Altingetdk
Jeg håber du læser med, @jeppebruus.bsky.social
#vildgudenå

legacy.altinget.dk/misc/udkast-...
legacy.altinget.dk

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Oct 27
link to Nature paper
www.nature.com/articles/d41...
Is academic research becoming too competitive? Nature examines the data
Applications for European research grants increased in 2025. Scientists say they’re feeling the competition.
www.nature.com

Reposted by Andreas De Block

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Oct 27
"The decline in success rates is absolutely not satisfactory, because it sometimes borders on a lottery”
Nature 17 October 2025
Well, an honest lottery would IMHO be far better. For the reasons outlined here:
blogs.lse.ac.uk/impactofsoci...
Funding competition sabotages science - Impact of Social Sciences
Research funding competitions seem fair but are often flawed. Gerald Schweiger, Adrian G. Barnett and Stijn Conix argue lotteries may support better science.
blogs.lse.ac.uk

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Oct 20
Hommage to Sofia Corradi, who conceived the idea of academic degrees without borders - the Erasmus Program

Reposted by Hans Henrik Bruun

ilpost.it
il Post @ilpost.it · Oct 19
È morta Sofia Corradi, che immaginò l’Erasmus
È morta Sofia Corradi, che immaginò l’Erasmus
Per anni fu la più convinta promotrice di un programma europeo per gli studi all'estero, oggi uno dei più grandi successi dell'Unione Europea
www.ilpost.it

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Oct 18
Pretty mindblowing!
milessilman.bsky.social Miles Silman @milessilman.bsky.social · Oct 18
There are forces in #nature that are at work that we don't experience or aren't aware of, but that are essential parts of the lives and spectacular numbers of creatures. For example, this from Ranjiangshang Ran and colleagues @pnas.org

www.pnas.org/doi/10.1073/...
Electrostatics facilitate midair host attachment in parasitic jumping nematodes | PNAS
Jumping can be hazardous for entomopathogenic nematodes (EPNs) as those that fail to attach to an insect host face death by predation or starvation...
www.pnas.org

Reposted by Hans Henrik Bruun

milessilman.bsky.social
Miles Silman @milessilman.bsky.social · Oct 18
There are forces in #nature that are at work that we don't experience or aren't aware of, but that are essential parts of the lives and spectacular numbers of creatures. For example, this from Ranjiangshang Ran and colleagues @pnas.org

www.pnas.org/doi/10.1073/...
Electrostatics facilitate midair host attachment in parasitic jumping nematodes | PNAS
Jumping can be hazardous for entomopathogenic nematodes (EPNs) as those that fail to attach to an insect host face death by predation or starvation...
www.pnas.org

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Oct 18
Indeed the asexual generation of the gall wasp Neuroterus quercusbaccarum on common oak. If you pop some galls off, you may find larvae of the inquiline gall midge Parallelodiplosis galliperda bladmineerders.nl/parasites/an...
Parallelodiplosis galliperda – Plant Parasites of Europe
bladmineerders.nl

Reposted by Hans Henrik Bruun

jcsvenning.bsky.social
Jens-Christian Svenning @jcsvenning.bsky.social · Oct 17
Bumble #bee #pollination of #linden already 24.6 milllion years ago - cool new empirical illustration of the deep roots of the ecologies of modern-day species www.sci.news/paleontology...
(photo 1: commons.wikimedia.org/wiki/File:Bombus_hypnorum_-_Tilia_cordata_-_Keila.jpg)

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Oct 13
Thanks in particular to Michele Di Musciano, Riccardo Testolin and Ale Chiarucci for stearing the boat safely ashore

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Oct 13
The results only tell us that site selection was (a lot) better than random, not if the management of N2000 sites secured long-term persistence of biodiversity. Alas, lots of evidence suggest the opposite.
#N2K #spatialconservationplanning

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Oct 13
New paper alert! The EU Natura 2000 network encompasses populations of most vascular plant species in the region, but with a lot of spatial variation in representativity. The results provide guidance for for better coverage after the planned network expansion.
doi.org/10.1111/cobi...
Representativeness of the Natura 2000 network for preserving plant biodiversity in the European Union
The Natura 2000 (N2K) network of protected areas is one of the main tools for area-based conservation in the European Union (EU), yet its role in preserving plant biodiversity requires better underst...
doi.org

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Oct 11
Random street corner in Leuven BE
#stopgenocide

Reposted by Tim M. Blackburn, Hans Henrik Bruun, Richard D. Gregory , and 4 more

martinswarren.bsky.social
martinswarren.bsky.social @martinswarren.bsky.social · Oct 11
The new European Butterfly Red List is published today, with worrying findings. Over 1/4 (28%) of Europe’s 442 species are threatened with extinction or are close to being so. The situation is far worse for our 148 endemic species, 40% are now threatened or nearly so www.bc-europe.eu/webpage.php?...
Front cover of the European Butterfly Red List, showing Polyommatus humedasae. The report can be downloaded at https://www.bc-europe.eu/webpage.php?name=red-list-butterflies-2025

Reposted by Hans Henrik Bruun, Ben Bond‐Lamberty, Richard Betts

olivierhonnay.bsky.social
Olivier Honnay @olivierhonnay.bsky.social · Oct 3
📢 Vacancy: I am urgently recruiting a PhD candidate to join a project on selection processes in pedunculate oak.
📅 Start date: no later than December 1st.

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Sep 27
Well, I believe it’ll be more applicable than the binary concept in less studied taxa and regions, as it is less evidence demanding when it comes to questions like “how did the species arrive in the focal area” etc.

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Sep 26
Thank you, Camilla Colding-Jørgensen for leading this important work, and to @jcsvenning.bsky.social and @r-ejrnaes.bsky.social for the collaboration, which was funded by the 15 June Foundation

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Sep 26
Using the flora of Denmark, we show that a large proportion of species are treated as 'native' by one source and as 'non'native' by others, i.e. are of uncertain status. Using a graduated definition, most of these species end up in the 'near-native' category

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Sep 26
Native and near-native species share most of their Pleistocene history. Are near-natives may well be our new natives under global climate change.

Reposted by Jens‐Christian Svenning, Jonathan Lenoir

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Sep 26
Nativeness cannot be binary, if is to make sense and be practically applicable at the scale of countries.
We propose a graduated definition, in which species native to neighbouring territories are considered "near-native"
doi.org/10.1002/oik....
A graduated nativeness definition for overcoming dilemmas and difficulties of vascular plant species
Nativeness is a concept central to biodiversity conservation and invasion biology, but there are several problems related to a classic binary nativeness definition. Dilemmas arise from the dynamic na...
doi.org

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Sep 26
Bilbo Segge ville være misundelig (sorry, lousy joke)

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Sep 26
Men ja, egentlig er det jo logisk nok. Alligevel tror 99% af den danske befolkning (og politikere) at biodiversitetskrisen skal løses ude på markerne. Den grønne trepart bygger 100% på at gøre ingenting i de officielt, men ikke reelt, beskyttede naturområder, men i stedet lave *skovrejsning*

hhbruun.bsky.social
Hans Henrik Bruun @hhbruun.bsky.social · Sep 26
Nja, bare at sandsynligheden for lokal uddøen er lige så stor inden for Natura2000- og §3-beskyttede områder som udenfor. De officielt beskyttede naturområder DK melder ind til EU og CBD er streger på kort uden reel virkning for de truede arter. Læs videre her:
doi.org/10.1016/j.bi...
Redirecting
doi.org