Glob Chang Biol November 2019 PMID 31393076

The global decline of freshwater megafauna.

Fengzhi He, Christiane Zarfl, Vanessa Bremerich, Jonathan N W David, Zeb Hogan, Gregor Kalinkat, Klement Tockner, Sonja C Jähnig

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256

Peak: 82 in Aug 2019

across 7 sources since Aug 2019

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AI synopsis

What people are saying

The discussions prominently feature alarming statistics, such as the claimed 88% population decline of freshwater megafauna, which many participants describe as 'terrifying' and as part of a broader biodiversity crisis exacerbated by climate change. The tone of these discussions is urgent and engaging, with phrases like 'we are losing the world's freshwater megafauna' and 'a transformation in the way we care for freshwaters is needed,' conveying a call to action. This language highlights the seriousness of the situation and helps rally support for conservation efforts.

AgreementStrong agreement

The overwhelming majority of discussions express strong support for the findings in the publication, emphasizing the need for awareness and action.

InterestHigh interest

There is a high level of curiosity and concern displayed in the discussions, reflecting the audience's investment in the issue of freshwater megafauna.

EngagementHigh engagement

Many contributors engage deeply with the article’s content, discussing specific statistics and calling for conservation efforts.

ImpactHigh impact

Participants consistently underscore the significant implications of the findings, indicating a widespread belief in the publication’s importance for future conservation strategies.

Abstract in brief

Freshwater ecosystems, while highly diverse and dynamic, are facing significant threats, with vertebrate populations declining at a rate much higher than in terrestrial or marine environments.
Freshwater megafauna, animals over 30kg, are especially vulnerable to extinction due to their large size and specific habitat needs, and population trends for these species remain unclear on a global scale.
A study found that global populations of freshwater megafauna have declined by 88% from 1970 to 2012, with the most severe declines in the Indomalaya and Palearctic regions, highlighting the urgent need for enhanced monitoring and conservation efforts.

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All mentions

CECI N'EST PAS UN REQUIN ????

Frère Faucon · Jan 31, 2025 748,605 views

Decline of Freshwater Megafauna: Urgent Conservation Needs

This video discusses the significant threats to freshwater ecosystems, focusing on the decline of vertebrate populations, particularly freshwater megafauna. Over 88% of these species have vanished since 1970, revealing…

Wolne Rzeki · May 16, 2020 25,107 views

Fengzhi He

@FengzhiHe · X

Many freshwater megafauna species have experienced severe population declines and range contractions. https://t.co/vj67lbJWQd

Feb 27, 2024 · 4 likes · 403 followers View post →

Piotr Tryjanowski

@GreatGreyTryjan · X

RT @MarcelUhrin: The #global #decline of #freshwater #megafauna https://t.co/Q6FDeMeY78

Feb 18, 2022 · 1 share · 1,109 followers View post →

Marcel Uhrin

@MarcelUhrin · X

The #global #decline of #freshwater #megafauna https://t.co/Q6FDeMeY78

Feb 18, 2022 · 1 like · 1 share · 67 followers View post →

IGB Berlin (now on Bluesky)

@LeibnizIGB · X

8⃣ Der #Klimawandel ist eine der Hauptursachen für die #Biodiversitätskrise, da er die Lebensbedingungen & Lebensräume verändert. Gewässer sind besonders betroffen: Vorkommen großer Süßwasserarten sind zwischen 1970 und 2012 weltweit um 88% zurückgegangen. https://t.co/2o9gqnHTj5 https://t.co/7jiwmQnvSe

Sep 25, 2020 · 3,371 followers View post →

Tierversuche verstehen

@TVVde · X

RT @LeibnizIGB: 8⃣ #ClimateChange is one of the main causes of the #BiodiversityCrisis, as it changes living conditions & habitats. Freshwa…

Sep 25, 2020 · 1 share · 1,859 followers View post →

IGB Berlin (now on Bluesky)

@LeibnizIGB · X

8⃣ #ClimateChange is one of the main causes of the #BiodiversityCrisis, as it changes living conditions & habitats. Freshwater #biodiversity is especially impacted: big freshwater animals (aquatic magefauna) declined globally by 88% between 1970 and 2012. https://t.co/2o9gqnHTj5 https://t.co/SeOFS2GI1w

Sep 25, 2020 · 2 likes · 1 share · 3,371 followers View post →

Izabela Bogusławska

@I_Boguslawska · X

Szóste wymieranie. Czy jesiotry podzielą los dinozaurów? https://t.co/nYJeMozj3F przez @YouTube

May 16, 2020 · 358 followers View post →

✨

@sakamata76 · X

RT @SciKotz: 記事に出てくる原著や関係論文も挙げておきます。 #保全 #淡水魚 Globally, freshwater megafauna populations declined by 88% from 1970 to 2012, with the highes…

Mar 13, 2020 · 6 shares · 2,017 followers View post →

青川龍樹

@aokawatatuki · X

RT @SciKotz: 記事に出てくる原著や関係論文も挙げておきます。 #保全 #淡水魚 Globally, freshwater megafauna populations declined by 88% from 1970 to 2012, with the highes…

Mar 13, 2020 · 6 shares · 395 followers View post →

mY8jHYMgEW7WkSE

@mY8jHYMgEW7WkSE · X

RT @SciKotz: 記事に出てくる原著や関係論文も挙げておきます。 #保全 #淡水魚 Globally, freshwater megafauna populations declined by 88% from 1970 to 2012, with the highes…

Mar 13, 2020 · 6 shares · 317 followers View post →

◆ミナミオニ鍵蝦◆

@Lock_Shrimp · X

RT @SciKotz: 記事に出てくる原著や関係論文も挙げておきます。 #保全 #淡水魚 Globally, freshwater megafauna populations declined by 88% from 1970 to 2012, with the highes…

Mar 12, 2020 · 6 shares · 958 followers View post →

小坪遊　Yu Kotsubo

@SciKotz · X

Mar 12, 2020 · 10 likes · 6 shares · 9,189 followers View post →

@ohdeeremily · X

Did you know that populations of freshwater megafauna have declined by 88% since 1970? In the context of sewage releases, agricultural pollution, water abstraction, barrier construction and land-use change, it's hardly surprising. https://t.co/HSl21a1TvS

Mar 10, 2020 · 1,736 followers View post →

Fossile, T.

@thifossile · X

The global decline of freshwater megafauna https://t.co/vEqnj5gHJW

Feb 7, 2020 · 500 followers View post →

ERC Tradition

@ErcTradition · X

The global decline of freshwater megafauna https://t.co/MvA2W1g2yK

Feb 7, 2020 · 1 like · 222 followers View post →

Jorge

@Sanchez_JorgeR · X

RT @fwlifeorg: Freshwater megafauna are huge animals that weigh 66 - 650 lbs.! Some excellent research by @Fengzhi-He and colleagues (inclu…

Feb 6, 2020 · 4 shares · 342 followers View post →

Brad Lamphere

@dumbfish_blam · X

RT @fwlifeorg: Freshwater megafauna are huge animals that weigh 66 - 650 lbs.! Some excellent research by @Fengzhi-He and colleagues (inclu…

Feb 5, 2020 · 4 shares · 167 followers View post →

Colin Bean

@ProfColinBean · X

RT @fwlifeorg: Freshwater megafauna are huge animals that weigh 66 - 650 lbs.! Some excellent research by @Fengzhi-He and colleagues (inclu…

Feb 5, 2020 · 4 shares · 2,826 followers View post →

Freshwater Life

@fwlifeorg · X

Freshwater megafauna are huge animals that weigh 66 - 650 lbs.! Some excellent research by @Fengzhi-He and colleagues (including our Advisory Board member @ZebHogan) describes the precarious future for these aquatic giants. Read more: https://t.co/Aj95MJcgfx

Feb 5, 2020 · 9 likes · 4 shares · 583 followers View post →

Gregor Kalinkat @gkalinkat@det.social

@gkalinkat · X

@FengzhiHe @SCJaehnig @KlementTockner @ZebHogan @nytimes original study available https://t.co/ZDSui3xJ5h

Jan 27, 2020 · 1 like · 2,626 followers View post →

Andrew Blades

@andrewblades777 · X

RT @RTB_HRoss: Creation Care: Globally, fresh water megafauna, especially mega-fishes, populations have declined 88% from 1970 to 2012. htt…

Jan 26, 2020 · 2 shares · 9,410 followers View post →

John Sears

@JohnSears2077 · X

RT @RTB_HRoss: Creation Care: Globally, fresh water megafauna, especially mega-fishes, populations have declined 88% from 1970 to 2012. htt…

Jan 25, 2020 · 2 shares · 1,376 followers View post →

Sonja Jähnig

@SCJaehnig · X

RT @LeibnizIGB: A @nytimes article about the global decline of #freshwater #megafauna populations – by 88% between 1970 and 2012! Plus impr…

Jan 23, 2020 · 9 shares · 1,410 followers View post →

Diane Orihel

@DianeOrihel · X

RT @LeibnizIGB: A @nytimes article about the global decline of #freshwater #megafauna populations – by 88% between 1970 and 2012! Plus impr…

Jan 23, 2020 · 9 shares · 3,502 followers View post →

Sibylle Schroer

@SchroerSibylle · X

RT @LeibnizIGB: A @nytimes article about the global decline of #freshwater #megafauna populations – by 88% between 1970 and 2012! Plus impr…

Jan 22, 2020 · 9 shares · 329 followers View post →

Christopher Monk

@MonkCT · X

RT @LeibnizIGB: A @nytimes article about the global decline of #freshwater #megafauna populations – by 88% between 1970 and 2012! Plus impr…

Jan 22, 2020 · 9 shares · 484 followers View post →

Johannes Graupner

@jott_punkt · X

RT @LeibnizIGB: A @nytimes article about the global decline of #freshwater #megafauna populations – by 88% between 1970 and 2012! Plus impr…

Jan 22, 2020 · 9 shares · 402 followers View post →

Gregor Kalinkat @gkalinkat@det.social

@gkalinkat · X

RT @LeibnizIGB: A @nytimes article about the global decline of #freshwater #megafauna populations – by 88% between 1970 and 2012! Plus impr…

Jan 22, 2020 · 9 shares · 2,626 followers View post →

Klement Tockner

@KlementTockner · X

RT @LeibnizIGB: A @nytimes article about the global decline of #freshwater #megafauna populations – by 88% between 1970 and 2012! Plus impr…

Jan 21, 2020 · 9 shares · 1,424 followers View post →

Hugh Ross

@RTB_HRoss · X

Creation Care: Globally, fresh water megafauna, especially mega-fishes, populations have declined 88% from 1970 to 2012. https://t.co/jBC34I8Ytm

Jan 21, 2020 · 2 likes · 2 shares · 23,981 followers View post →

Bernhard Aichner

@b_aichner · X

RT @LeibnizIGB: A @nytimes article about the global decline of #freshwater #megafauna populations – by 88% between 1970 and 2012! Plus impr…

Jan 21, 2020 · 9 shares · 515 followers View post →

IGB Berlin (now on Bluesky)

@LeibnizIGB · X

Jan 21, 2020 · 13 likes · 9 shares · 3,371 followers View post →

Independent Workers Party of Los Angeles

@IWPCHI · X

Read the study: https://t.co/K6hf71FS1B

Jan 19, 2020 · 1,552 followers View post →

Gregor Kalinkat @gkalinkat@det.social

@gkalinkat · X

RT @qaecology: .@silverlangur: @FengzhiHe's work drawing attention to neglected, invisible, and highly threatened freshwater megafauna has…

Jan 15, 2020 · 2 shares · 2,626 followers View post →

Gerry Ryan

@silverlangur · X

RT @qaecology: .@silverlangur: @FengzhiHe's work drawing attention to neglected, invisible, and highly threatened freshwater megafauna has…

Jan 15, 2020 · 2 shares · 1,195 followers View post →

QAECO

@qaecology · X

.@silverlangur: @FengzhiHe's work drawing attention to neglected, invisible, and highly threatened freshwater megafauna has been great, and this piece on their global decline gives much needed visibility for some wonderful creatures. https://t.co/Bx6Z9ff2zZ @GlobalChangeBio

Jan 15, 2020 · 3 likes · 2 shares · 2,470 followers View post →

Susanne Günther

@schillipaeppa · X

@UJF_tweet Ich wundere mich immer nur, wie der Bezug zur #Landwirtschaft in die #Berichterstattung gelangt, in der Originalpublikation gibt es nämlich keinen: https://t.co/JxO7KX9wqW

Oct 14, 2019 · 2,647 followers View post →

Artur Arêde

@arturarede · X

A CAUSA DAS COISAS A pesca e a construção de barragens tiveram um grande impacto na sobrevivência de grandes animais de água doce, incluindo peixes, golfinhos, tartarugas gigantes, castores e esturjões, todos com peso... https://t.co/v8oMJL2H06

Sep 15, 2019 · 1 like · 355 followers View post →

Gregor Kalinkat @gkalinkat@det.social

@gkalinkat · X

@GlobalChangeBio @altmetric @KlementTockner @FengzhiHe @SCJaehnig @LeibnizIGB @ZebHogan @AFL_org thanks to @SteveOrmerod for tweeting about it this week @FengzhiHe et al "The global decline of #freshwater #megafauna" is now among the TopTen of all @GlobalChangeBio papers ever tracked via @altmetric https://t.co/9lrKmeeOH3 https://t.co/im5BgFmcQO https://t.co/Pe33jLXDmz

Sep 13, 2019 · 6 likes · 2,626 followers View post →

Luis Montero Flores

@chicholmf · X

The global decline of freshwater megafauna https://t.co/EBJh1L0HtU

Sep 11, 2019 · 1,218 followers View post →

びるばっどら

@bilubadora7 · X

RT @KaizinKaizin: 世界の巨大淡水生物、40年間で約9割も減っていた基準は30kg以上。巨大淡水魚はなんと94％減だそうです。元論文はこちら→ https://t.co/4ouM2KlcNV 記事はこちら→ https://t.co/AMRxBnAItW…

Aug 20, 2019 · 7 shares · 1,109 followers View post →

ほら男爵

@CAMEOTA_HORAO · X

Aug 20, 2019 · 7 shares · 1,762 followers View post →

マーキー

@gima333 · X

Aug 20, 2019 · 7 shares · 143 followers View post →

sotomami

@sotomami222 · X

Aug 19, 2019 · 7 shares · 133 followers View post →

misa tamagawa

@tamamisa · X

Aug 19, 2019 · 7 shares · 7,647 followers View post →

E.KIMURA 編集ライター

@mitopub · X

Aug 19, 2019 · 7 shares · 2,704 followers View post →

Eco Melon

@Eco_melon · X

@JacquelynGill @reneelertzman 94% - That's not a collapse. wait until we reach 99.9999% https://t.co/qrUNQRns6B

Aug 18, 2019 · 493 followers View post →

Sergio Scott

@dr_Scott_cl · X

RT @GlobalChangeBio: EARLY VIEW The global decline of freshwater megafauna

Aug 16, 2019 · 7 shares · 314 followers View post →

Claudio Valdovinos Zarges

@CV_Zarges · X

RT @GlobalChangeBio: EARLY VIEW The global decline of freshwater megafauna

Aug 16, 2019 · 7 shares · 6,202 followers View post →

Rafael Aceituno Daza

@AceitunoDaza · X