this post was submitted on 24 Sep 2025
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Biodiversity

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Biodiversity is a term used to describe the enormous variety of life on Earth. It can be used more specifically to refer to all of the species in one region or ecosystem. Biodiversity refers to every living thing, including plants, bacteria, animals, and humans. Scientists have estimated that there are around 8.7 million species of plants and animals in existence. However, only around 1.2 million species have been identified and described so far, most of which are insects. This means that millions of other organisms remain a complete mystery.

Over generations, all of the species that are currently alive today have evolved unique traits that make them distinct from other species. These differences are what scientists use to tell one species from another. Organisms that have evolved to be so different from one another that they can no longer reproduce with each other are considered different species. All organisms that can reproduce with each other fall into one species. Read more...

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With local orcas 'in desperate condition,' Snuneywuxw is monitoring ships' noises (indiginews.com)
submitted 2 months ago by Salamence@lemmy.zip to c/biodiversity@mander.xyz
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cross-posted from: https://hexbear.net/post/6227847

Underwater noise is a serious threat to endangered southern resident killer whales, as shipping traffic intensifies through some of the busiest waters off “Vancouver Island.”

Indigenous-led efforts are underway to track vessel noise and protect whale habitat, according to government documents obtained by Canada’s National Observer, as maritime traffic in the area surges following the expansion of the Trans Mountain pipeline. It’s expected to grow even more with a port expansion south of “Vancouver,” too.

Snuneywuxw First Nation, whose traditional territory includes the “Gulf Islands” and key fishing grounds along major shipping routes between “Nanaimo” and “Vancouver,” is now in its second year of monitoring underwater noise.

“We’re seeing extreme impacts,” said John White, member of the First Nation and its director of land and natural resources. He said vessel traffic, particularly in “Nanaimo’s” harbour and the “Northumberland Channel,” generates underwater noise that has not been previously well-studied.

“[Noise] ranges jump off the charts when we see all these vessels coming through.”

The First Nation’s field teams collect acoustic data in a five-kilometre stretch between “Nanaimo” and “Gabriola Island,” waters regularly crossed by BC Ferries and congested with freighters waiting for a berth in “Vancouver.”

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