Jan Wanink

@janwanink.bsky.social

Ecologist (retired) from Groningen, Netherlands.

In lakes with larger species pools, distantly related introduced fishes were more likely to invade (Darwin's hypothesis). In lakes with smaller species pools, closely related fishes were more likely to invade (the pre-adaptation hypothesis). #bioinvasions www.thebrighterside.news/post/swedish...

Swedish lakes help solve Darwin’s 160-year puzzle about invasive species

Swedish lake data show dark diversity can predict when closely related or distant invasive fish are more likely to establish.

thebrighterside.news

Vanmiddag is er een technische briefing over het pamflet waarin de wur pleit voor doelsturing en voorstelt een rekenkundige ondergrens van minimaal 1 mol/ha/jaar in te voeren en alle PAS-melders een generaal pardon te geven. Dat rapport veroorzaakt voor meer verwarring. www.raoulbeunen.nl?p=1654

Meer verwarring

Op 19 maart 2026 publiceerde Wageningen Universiteit het rapport ‘De Nederlandse stikstofcrisis: Van verwarring naar verbinding'. Het rapport is gericht op het inzetten van doelsturing voor de vermind...

raoulbeunen.nl

It’s official (get it in your diary!) 📅 🦅 The 16th Pan-African Ornithological Congress (PAOC16) will take place in Marrakech, Morocco, from 12 - 17 April 2027. The website is being updated—check back for details on symposia and abstract calls soon: paoc.africa #Ornithology #AfricanOrnithology

PAOC: Pan-African Onithological Congress

PAOC16 will be held in the ancient city of Marrakech, whose famous medina is a UNESCO World Heritage Site. The city is home to numerous religious and cultural sites, and sits in the Tensift River Valley in the foothills of the Atlas Mountains.

paoc.africa

🌍 Since the Convention on Wetlands was first signed in Ramsar, Iran in 1971, countries around the world have united to protect one of our planet’s most essential ecosystems. 🔹 Today, under the Victoria Falls Declaration and the Fifth Strategic Plan, Parties are advancing accountability.

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In a little less than a week, there will be the first observance of the UNEP World Lake Day (August 27th). It aims to raise awareness of the importance of lakes and the sustainable management of lake and related ecosystems. www.unep.org/events/un-da... @sil-limnology.bsky.social @aslo.org

World Lake Day 2025

When: 27 AugustWorld Lake Day aims to raise awareness of the importance of lakes and the sustainable management of lake and related ecosystems. Lakes are one of the most vital natural resources on our...

unep.org

🐟 WWF’s major new report Africa’s Forgotten Fishes puts the spotlight on the astonishing diversity of Africa’s freshwater fishes 🚨 26% of assessed freshwater fish species on the continent are threatened with extinction, and the true number is likely even higher

A girl swimming underwater with several gold/silver fish. Text says: "Africa's Forgotten Fishes report".

The eastern Baltic cod has shrunk dramatically in size in recent decades due to rapid evolution — changes at the genetic level — caused by decades of intensive fishing, a new study says. It’s one of the first studies to show that a marine species has evolved in response to fishing pressure.

Evolution in overdrive as Baltic cod shrink due to fishing pressure, study shows

The eastern Baltic cod has shrunk dramatically in size in recent decades due to rapid evolution — changes at the genetic level — caused by decades of intensive fishing, a new study says. It’s one of…

news.mongabay.com