New technology can measure coral reef health from small water samples.
To monitor coral reefs, experts usually conduct underwater visual surveys using SCUBA, which can be both time-consuming and logistically challenging. But now, two biology experts at the University of Hawaii have developed a technique for measuring the amount of living coral on a reef by analyzing DNA collected in small samples of seawater.
Study co-author Peter Marko is an associate professor in the Department of Biology.
“If you asked me 10 years ago if this was possible, I would have said, ‘No way,’” said Professor Marko. “But advances in technology and falling costs of highly-sensitive DNA sequencing methods have opened the door to all kinds of important ecological questions.”
Along with graduate student Patrick Nichols, Professor Marko has demonstrated that the new method for analyzing environmental DNA (eDNA) is a quick and cost-effective way to measure live coral “cover,” or the amount of a coral reef occupied by living corals.
Coral cover is one of the most important measurements that scientists use to characterize the health of a reef, which has become an urgent task as climate change has pushed corals into a state of major decline.
. #earth#earthdotcom#planetearth#Environment#Environmental#savetheearth#ecology#nature#sustainability#sustainable#recycle#organic#pollution#animals#plants#wildlife#planet#global #ocean#reef#fish#sea#underwater#diving#saltwater#scuba#spring
Una aranya fil d'or amb les restes d'una papallona Morfo blau que va quedar atrapada a la seva teranyina. - Aranya fil d'or - Araña hilos de oro - Golden silk orb-weaver
- Nephila clavipes - Morfo blau
- Blue morpho
- Morfo azul
- Morpho menelaus
In case anyone’s unaware, next Monday is Earth Day. The environment is important to us over here at Dérive Vie, and we hope you feel the same way. There are so many beautiful places in the world, and our mission statement as a small business is to provide affordable travel gear to help you go out and see the world and its beauty.
“If you’ve never had the opportunity to stand in the mist of a foggy forest, you’ll be forgiven for not fully understanding the majesty of the mist. Many people are unaware, but in the temperate areas where coastal redwoods live, rain not only provides water during the summer, but in the winter too. In addition to this, redwoods rely heavily on coastal fog for moisture.
Coastal fog is formed by a complex interaction of land, ocean, and atmosphere. Once it descends upon a forest, fog begins to condense on the needles and leaves of the trees and forms into droplets, which is readily absorbed by the trees. After the sequoias have soaked in their fill, they shed this moisture to the ground, so the forest understory can begin to drink, too.
Scientists have reported that fog accounts for around 40 percent of redwood moisture intake, and just like the trees, it too is being threatened by global warming! The creation of fog is part of an elegantly timed hydration system. In a daily, or “diurnal” cycle, fog often provides moisture at night and burns off during the day, when plants need sun for photosynthesis. Over the course of a year, fog is (conveniently) most abundant during our nearly rainless summers. During these warm months, coast redwoods can get more than half their moisture from fog.”
🇧🇷Esta e-Bike já percorreu mais de 5.000 km com energia recuperação do lixo. E estimamos que a bateria composta por células 18650 tidas como esgotadas ainda pode entregar outros 5.000 km. ———————————————————————————————🇺🇸 This black beauty has traveled more than 3,000 miles “on waste energy”. And we estimate that the battery can deliver another 3 k.
812 hours ago
There are so many colors outside , don’t wait until you feel you are ready , you’ll end up in a desaturated world. Go out in the colorful world. #LifeOfProdigy