Biodiversity

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Welcome to c/Biodiversity @ Mander.xyz!

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



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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...

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founded 2 years ago
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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!

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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!

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cross-posted from: https://hexbear.net/post/3680066

  • The WAP Complex of protected areas that straddles the border region of Benin, Burkina Faso and Niger is one of West Africa’s most important protected areas and a haven for many iconic endangered species.
  • Servals, caracals and African wildcats are also found in the WAP Complex, but almost nothing is known about their status, distribution, ecology or threats.
  • Covert surveys of medicine markets in the region have found serval and caracal skins, though it’s not known if the skins originated within the WAP Complex.
  • The presence of jihadist militants in the region severely impacts conservation and research, particularly in the Niger and Burkina Faso portions of the complex.

In the border region between Benin, Niger and Burkina Faso lies a network of protected areas that form one of the largest intact wildernesses in West Africa. The W-Arly-Pendjari (WAP) Complex is a mosaic of gallery forests, savannas and riparian habitats, and the last refuge for many of the region’s most iconic species, including West African lions (Panthera leo leo), savanna elephants (Loxodonta africana) and cheetahs (Acinonyx jubatus).

With conservation focused on these threatened and beloved species, it’s easy for the small cats to get lost. There are three species of small cats — servals (Leptailurus serval), caracals (Caracal caracal) and African wildcats (Felis lybica) — in the WAP complex. Though all three have a conservation status of least concern on the IUCN Red List, there are few hard facts about their numbers in the WAP Complex or West Africa. With continuing insecurity plaguing the region, and little money for small cat research, these species risk falling even further into obscurity.

At the heart of the WAP Complex lie three strictly protected areas: Pendjari National Park in Benin, Arly National Park in Burkina Faso, and W Regional Park, which straddles the Benin, Burkina Faso and Niger border region. Together, these parks, along with adjoining hunting zones, wildlife reserves and areas under other forms of protection, cover 34,000 square kilometers (13,100 square miles). The core area, about half of it, is a UNESCO World Heritage Site.

Over the past few years, the region has been plagued by insecurity. Jihadist militants are entrenched in the Burkina Faso and Niger portions of the complex, with violence increasingly spilling over into Benin. Conservation work has become difficult and dangerous, though South Africa-based organization African Parks, which manages Pendjari National Park and the Benin portion of W, still carries out some biomonitoring activities, says Jacques Kougbadi, marketing and communications coordinator for African Parks.

Full article

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cross-posted from: https://hexbear.net/post/3608218

Giant Canada geese, so ubiquitous today in cities across the country, were once considered extinct. What can we learn from watching them up close?

In the opening minutes of Karsten Wall’s short film, Modern Goose, a flock of geese arrives in a cacophony of honks, barks, cackles and splashes, as it touches down in a human-made pond behind an outlet mall. The ruckus blends with the hum of traffic as they waddle under the neon glow of billboards and parking lot lights, picking at patches of grass and dodging vehicles in the drive-thru lane.

It’s a scene that would feel familiar in most Canadian cities, where geese have become ubiquitous to daily life. As it happens, these geese are Winnipeggers, descendants of a historically significant flock once thought to have disappeared altogether.

“A lot of people in the cities consider them pests, but then a lot of people go to Fort Whyte to watch the migration,” he says. “It was important to me to just let people sit and appreciate their amazing flying abilities, their migration abilities and how well they’re actually doing.”

There are other aspects of goose life that are relatable to humans. They mate for life (with just a 15 per cent separation rate, according to a Canadian field naturalist study titled “Divorce in Canada Geese”), raise their young together and migrate as a family. When female geese mature and find mates, they return to the place they were hatched to build nests of their own.

With today’s geese so abundant, it’s difficult to imagine a world without them.

But at the turn of the 20th century, unregulated hunting, egg collection and habitat erosion had nearly wiped out North America’s goose population and the giant Canada goose was thought to have disappeared altogether.

Full article

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The largest animal on Earth is thought to be the blue whale, but these strange sea creatures can grow even longer — reaching up to 150 feet (46 meters) in length.

There are around 175 species of siphonophores living in the deep sea throughout all of Earth’s oceans, although not every species is found in each ocean. Many siphonophores are long and string-like, but some, like the venomous Portuguese man o'war (Physalia physalis), resemble jellyfish.

Although a siphonophore may look like a single animal, it is actually a colony made up of individual organisms called "zooids," which each have a distinct function within the colony despite being genetically identical. Some catch prey and digest food, while others enable the colony to reproduce or swim. An individual zooid cannot survive on its own because they specialize in one function, so they rely on each other to form a "body."

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Some successful reintroductions of endangered species from insurance populations.

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TL;DW: Blood extracted from leeches can be used to track population distribution of some species.

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Full Article from NPR

Blue crabs are perhaps the most iconic species in the Chesapeake Bay.

The crustacean, which is actually blue, is a favorite among seafood lovers, but pollution, habitat loss and harvest pressure are all threats to its abundance.

“Years ago, we used to catch what we could sell,” says waterman Billy Rice. “Now we sell everything we can catch.”

Earlier this summer, a group of Virginia watermen voted to explore the possibility of year-round crab fishery, but conservationists worry what that could mean for the health of the Bay.

Five years ago, the blue crab population was estimated to be about 600 million. Now officials say it’s closer to half that number.

Until 2008, Virginia and Maryland used to allow crabbing year-round. But a decline in population led to a 16-year prohibition on winter dredging.

Chris Moore, a conservationist with the Chesapeake Bay Foundation, says reinstating winter crab dredging could further jeopardize the blue crab population.

“Blue crabs migrate throughout the summertime, but during the winter, they actually become kind of semi-hibernative,” Moore says. “And so what that means is they generally kind of stop moving, and they kind of burrow down into the sand or the mud bottom of the Chesapeake Bay and its tributaries.”

Maryland officials say the species’ recovery can be traced to the 2008 prohibition on winter crab dredging and that the Virginia watermens’ decision could create a rift in the long-standing partnership between the two states when it comes to the Bay.

Back on the crab boat, Billy Rice — who was born and raised on a Maryland tobacco farm — says he’s against winter crab dredging because it could mean even fewer crabs in the Bay.

“I think it’s just important to understand that, you know, we have a privilege to crab. It’s not a right to crab,” Rice says. “We have to have respect for the resource…so that we have crabs for future generations.”

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A full bag of Cheetos, discarded by a subterranean visitor to the Big Room in Carlsbad Caverns national park in New Mexico, has led the US National Park Service to issue a warning that discarded food could have a “huge impact” on the cave’s delicate and at-risk ecosystem.

“At the scale of human perspective, a spilled snack bag may seem trivial, but to the life of the cave it can be world changing,” the park said in its post about the garbage that was recently discovered there, threatening the balance of the unique cave system environment.

“The processed corn, softened by the humidity of the cave, formed the perfect environment to host microbial life and fungi,” officials wrote. “Cave crickets, mites, spiders and flies soon organize into a temporary food web, dispersing the nutrients to the surrounding cave and formations. Molds spread higher up the nearby surfaces, fruit, die and stink. And the cycle continues.”

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