Biodiversity

2958 readers
1 users here now

Welcome to c/Biodiversity @ Mander.xyz!

A community about the variety of life on Earth at all levels; including plants, animals, bacteria, and fungi.



Notice Board

This is a work in progress, please don't mind the mess.

2023-06-16: We invite our users to contribute resources for the sidebar.

2023-06-15: Looking for mods!



About

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...

Rules

  1. Don't throw mud. Be kind and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.


Quick Links

Resources



Bypass Paywalls



Similar Communities


Sister Communities

Science and Research

Biology and Life Sciences

Plants & Gardening

Physical Sciences

Humanities and Social Sciences

Memes



Find us on Reddit!

founded 2 years ago
MODERATORS
1
 
 

Please post any relevant, useful links you would like to add to the resource collection on the sidebar! :) Eventually I will go through my bookmarks too!

2
 
 

If anyone would like to help me set up these communities and/or mod, please get in touch. This place is what we make it and I’d love some fresh ideas. I mod a number of smaller science subreddits and would like to help make this place just as nice, if not better!

3
 
 

cross-posted from: https://hexbear.net/post/7012318

cross-posted from: https://news.abolish.capital/post/13018

An excerpt from “We Survived The Night” by Julian Brave NoiseCat

Though his father is a famous carver, it’s not lost on writer Julian Brave NoiseCat that their Secwépemc and St’at’imc ancestors were best-known for their intricate weaving. In his new book We Survived the Night, he pays tribute to their traditions by braiding memoir and on-the-ground reporting into the arc of a Coyote Story — legends of the trickster forefather of the Interior Salish peoples. In his 2024 documentary Sugarcane, co-directed with Emily Kassie, NoiseCat investigated the history of the St. Joseph’s Mission, a residential school near Williams Lake, B.C. where his father was rescued from an incinerator as a newborn baby, and mapped the intergenerational impacts of residential school on his family and community of Canim Lake.

We Survived the Night widens the lens, looking at the ways colonialism has disrupted Indigenous lives, pushing many nations to the brink of annihilation and erasure — as well as the resilience and power of people who continue, like Coyote, to persist in survival, mischief and resistance. His reporting takes him to communities across the continent, from the unrecognized Lumbee Tribe of North Carolina to the Nuxalk Nation in coastal B.C. to the Tlingit waters in Sitka, Alaska, where he reported the excerpt below

From The Narwhal via This RSS Feed.

4
 
 

It's really neat!

5
 
 

cross-posted from: https://hexbear.net/post/6952365

cross-posted from: https://news.abolish.capital/post/11958

A study published this week about tens of thousands of starving African penguins is highlighting what scientists warn is the planet's sixth mass extinction event, driven by human activity, and efforts to save as many species as possible.

Researchers from the South African Department of Forestry, Fisheries, and the Environment (DFFE), the United Kingdom's University of Exeter, and other institutions examined a pair of breeding colonies north of Cape Town, South Africa, and published their findings Thursday in Ostrich: Journal of African Ornithology.

"These two sites are two of the most important breeding colonies historically—holding around 25,000 (Dassen) and around 9,000 (Robben) breeding pairs in the early 2000s. As such, they are also the locations of long-term monitoring programs," said study co-author Azwianewi Makhado from the DFFE in a statement.

As the study explains: "African Penguins moult annually, coming ashore and fasting for 21 days, when they shed and replace all their feathers. Failure to fatten sufficiently to moult, or to regain condition afterwards, results in death."

The team found that "between 2004 and 2011, the sardine stock off west South Africa was consistently below 25% of its peak abundance, and this appears to have caused severe food shortage for African penguins, leading to an estimated loss of about 62,000 breeding individuals," said co-author and Exeter associate professor Richard Sherley.

— (@)

The paper notes that "although some adults moulted at a colony to the southeast, where food may have been more plentiful, much of the mortality likely resulted from failure of birds to fatten sufficiently to moult. The fishery exploitation rate of sardines west of Cape Agulhas was consistently above 20% between 2005 and 2010."

Sherley said that "high sardine exploitation rates—that briefly reached 80% in 2006—in a period when sardine was declining because of environmental changes likely worsened penguin mortality."

Humanity's reliance on fossil fuels is warming ocean water and impacting how salty it is. For the penguins' prey, said Sherley, "changes in the temperature and salinity of the spawning areas off the west and south coasts of South Africa made spawning in the historically important west coast spawning areas less successful, and spawning off the south coast more successful."

The researcher also stressed that "these declines are mirrored elsewhere," pointing out that the species' global population has dropped nearly 80% in the last three decades. With fewer than 10,000 breeding pairs left, the African penguin was uplisted to "critically endangered" on the International Union for Conservation of Nature (IUCN) Red List of Threatened Species last year.

Sherley told Mongabay at the time that the IUCN update "highlights a much bigger problem with the health of our environment."

"Despite being well-known and studied, these penguins are still facing extinction, showing just how severe the damage to our ecosystems has become," he said. "If a species as iconic as the African penguin is struggling to survive, it raises the question of how many other species are disappearing without us even noticing. We need to act now—not just for penguins, but to protect the broader biodiversity that is crucial for the planet's future."

Looks like the combined effects of climate change and over fishing are key factors in decimating the populations of these penguins.www.washingtonpost.com/climate-envi...

[image or embed]
— Margot Hodson (@margothodson.bsky.social) December 5, 2025 at 4:46 AM

Fearful that the iconic penguin species could be extinct within a decade, the conservation organizations BirdLife South Africa and the Southern African Foundation for the Conservation of Coastal Birds (SANCCOB) last year pursued a first-of-its-kind legal battle in the country, resulting in a settlement with the commercial fishing sector and DFFE.

The settlement, reached just days before a planned court hearing this past March, led to no-go zones for the commercial anchovy and sardine fishing vessels around six penguin breeding colonies: Stony Point, as well as Bird, Dassen, Dyer, Robben, and St. Croix islands.

"The threats facing the African penguin are complex and ongoing—and the order itself requires monitoring, enforcement, and continued cooperation from industry and the government processes which monitor and allocate sardine and anchovy populations for commercial purposes," Nicky Stander, head of conservation at SANCCOB, said in March.

The study also acknowledges hopes that "the revised closures—which will operate year-round until at least 2033—will decrease mortality of African penguins and improve their breeding success at the six colonies around which they have been implemented."

"However," it adds, "in the face of the ongoing impact of climate change on the abundance and distribution of their key prey, other interventions are likely to be needed."

Lorien Pichegru, a marine biology professor at South Africa's Nelson Mandela University who was not involved in the study, called the findings "extremely concerning" and warned the Guardian that the low fish numbers require urgent action "not only for African penguins but also for other endemic species depending on these stocks."


From Common Dreams via This RSS Feed.

6
7
8
 
 
9
10
 
 
11
 
 
12
 
 
13
 
 
14
15
16
 
 
  • UNESCO has declared the floodplain around Malaysian Borneo’s Kinabatangan River a biosphere reserve, linking the Heart of Borneo to the Lower Kinabatangan–Segama Wetlands.
  • Conservationists warn that the landscape remains heavily fragmented by oil palm plantations and faces persistent threats from pollution and weak land governance.
  • They argue that lasting change will require land reform, corporate accountability and stronger coordination between Sabah’s forestry and wildlife authorities.

archived (Wayback Machine)

17
 
 
18
19
20
21
22
 
 

cross-posted from: https://slrpnk.net/post/29116041

  • New research carried out in Colombia by the University of Cambridge suggests that local surveys assessing the effect of land clearances on biodiversity may be underestimating the impact by as much as 60%.
  • To fully understand the effects of clearing forests for pastureland, much surveys of a much larger scale are required to reflect the different levels of biodiversity in regions and habitats and their resilience to change.
  • More accurate species surveys, the authors say, could also support future programs such as biodiversity offsetting schemes as well as influencing farming policies.

archived (Wayback Machine)

23
 
 

October 20 marks International Sloth Day, a day dedicated to celebrating these enigmatic and often critically endangered creatures.

24
 
 

You walk into a tea shops and find countless varieties. All those herbal teas: not really tea. They are made from non-tea plants, most of which taste nothing like real tea. Peu-er is probably as close as it gets.

The remaining (real) tea all comes from the same singular specie. Green and black is just a difference in processing of the same plant. White tea is just taking the tips of the tea leaf. All the flavors are just ways we dress it up with additives, or by smoking it (e.g. Russian Earl Gray).

Why the lack of biodiversity? Because no one has genetically modified a tea tree to give us more choice. There are far more tea drinkers in the world than coffee drinkers. That’s ideal b/c coffee has environmental consequences. It also means there should be a huge market for something like a tea tree that is married to a maple tree to give us maple tasting tea, or GMO tea that tastes like coffee.

25
view more: next ›