Loss of intensity and diversity of noises in ecosystems reflects an alarming decline in healthy biodiversity, say sound ecologists

Loss of intensity and diversity of noises in ecosystems reflects an alarming decline in healthy biodiversity, say sound ecologists

Sounds of the natural world are rapidly falling silent and will become “acoustic fossils” without urgent action to halt environmental destruction, international experts have warned.

As technology develops, sound has become an increasingly important way of measuring the health and biodiversity of ecosystems: our forests, soils and oceans all produce their own acoustic signatures. Scientists who use ecoacoustics to measure habitats and species say that quiet is falling across thousands of habitats, as the planet witnesses extraordinary losses in the density and variety of species. Disappearing or losing volume along with them are many familiar sounds: the morning calls of birds, rustle of mammals through undergrowth and summer hum of insects.

Today, tuning into some ecosystems reveals a “deathly silence”, said Prof Steve Simpson from the University of Bristol. “It is that race against time – we’ve only just discovered that they make such sounds, and yet we hear the sound disappearing.”

“The changes are profound. And they are happening everywhere,” said US soundscape recordist Bernie Krause, who has taken more than 5,000 hours of recordings from seven continents over the past 55 years. He estimates that 70% of his archive is from habitats that no longer exist.

  • Melatonin@lemmy.dbzer0.com
    9·
    8 months ago

    Remember the Permian-Triassic extinction? Now THAT seemed like it doomed the planet, right? Two mass extinction events, BLAM-BLAM, back to back!

    80% of marine invertebrate species and 70% of terrestrial vertebrate species WIPED OUT FOREVER.

    Too much oxygen sometimes, too little others - that time it rained for 2 million years - the two times volcanoes froze the Earth.

    Yet like the Dude, the Earth abides.

    • UnderpantsWeevil@lemmy.world
      81·
      8 months ago

      Too much oxygen sometimes, too little others - that time it rained for 2 million years - the two times volcanoes froze the Earth.

      That’s right. In a meager checks notes 2M years, the native floura and fauna will be back on their feet, maybe, we hope.

      Yet like the Dude, the Earth abides.

      We’re enjoying a certain degree of selection bias. We exist here because our planet did eventually recover. But this outcome wasn’t predetermined.

      Along the way, we may end up destroying things that are ultimately unrecoverable. The eye-sight of the trilobyte was a happy little accident no living species has yet been able to duplicate. Anerobic life has been relegated to the most remote and microscopic corners of the world. Natural longevity has degraded in younger variants and our genetic code is overloaded with failed, silenced adaptations that leave mammals more prone to cancer and other genetic defects that our historical counterparts are less frequently burdened by.

      And that’s assuming we aren’t on an unwitting collision course with a real end game disaster - like the hyper-corrosive atmosphere of Venus or the depleted atmosphere of Mars.

      What are the odds something as complex and intricate as the human brain will exist before our star goes nova and the planet is consumed in its expansion? It took us 4.5B years to get here. Crazy to toss it all out the window because some business nerds in DC and Detroit hate trains.

      • Melatonin@lemmy.dbzer0.com
        6·
        8 months ago

        There is no native anything. We’re ALL transitional species. OF COURSE things get destroyed that are unrecoverable. We don’t have fish with armor. We don’t have giant sloths with stony skin. Trilobites are ALL OVER the Fossil record. We don’t have a single one today.

        Let’s stop trying to preserve this thin slice, this snapshot of evolution as though it were the final destination. It’s not.

        I like people; I’m one of them. But humans have only been here a few hundred thousand years. Life wasn’t struggling to produce US. We’re a (in our own minds) happy accident, produced by the opportunities afforded us in one of those earlier extinctions.

        We will not be throwing away 4.5B years of evolution. We’ll just be demonstrating that too much intelligence is not a successful evolutionary trait.