fresh water

anonymous asked:

STEEB WILL NEED FRESH AND WARM WATER HOW WILL HE HANG WITH THE OTHERS I'M WORRIED ABOUT HIM -proportion anon

friend pal buddy friendo chum budpal they’re people with fish butts i’m not gonna worry about that X’D

(but omg imagine steve with like a fresh water fish bowl on his head ksdjhgfkljfglkjhsfdkljhgdfkljghdfkjhgsdf!!!!) 

3

A salty situation.

Zooplankton may be the smallest species in the freshwater food chain, but they play a big role in preserving our lakes, streams and wetlands. That’s one of the reasons why IBM  joined forces with the Rensselaer Polytechnic Institute and The FUND for Lake George to create the Jefferson Project at Lake George to understand and protect freshwater ecosystems. Recently they studied the effects road salt has on a species of zooplankton. Road salt usage has increased 50-fold since 1940, and bodies of freshwater are increasing in salinity because of it. Using IBM technology, the researchers monitored zooplankton in varying levels of salinity and found that the organisms were capable of evolving a higher tolerance to the salt. This is good news for the ecosystem since the loss of plankton could have cascading effects throughout the food chain. See, small can be mighty too.


Explore the study’s results  →

THREATENED RIVER SHARKS REDISCOVERED AFTER 45 YEARS

Scientists recently discovered two species of shark river after analyzing the DNA of these fishes in a market in Papua New Guinea. These represent the first records of both species in the country since the 1960s and 1970s and highlight the lack of studies of shark biodiversity.

The river sharks (Carcharhinidae: Glyphis) are a relatively poorly known group of sharks with patchy distributions in tropical rivers and coastal regions of the Indo-West Pacific

The fact that adult speartooth sharks (Glyphis glyphis) , a large apex predator, have thus far gone unnoticed highlights the rarity of river sharks which combined with their occurrence in remote, poorly-surveyed regions, have resulted in Glyphis species being some of the least known sharks

Despite their large size, they are not considered a danger to humans due to their extreme rarity. Experts believe there are less than 2,500 mature individuals of this species in the entire world, and no more than 200 in any one local population.

External image

Photograph: Freshly caught specimen of New Guinea river shark (Glyphis garricki)

The New Guinea river shark, which is generally slightly larger, is even more rare. Fewer than 250 mature individuals are believed to exist.

  • Image:  Freshly caught adult males of speartooth shark (Glyphis glyphis)
  • reference:  White et al 2015 Rediscovery of the Threatened River Sharks, Glyphis garricki and G. glyphis, in Papua New Guinea. PLoS ONE
Blessed is the man who trusts in the LORD, And whose hope is the LORD. For he shall be like a tree planted by the waters, Which spreads out its roots by the river, And will not fear when heat comes; But its leaf will be green, And will not be anxious in the year of drought, Nor will cease from yielding fruit.
—  Jeremiah 17:7-8 (NKJV)
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Seto-gawa Canal, HIda-furukawa by TokyoViews
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