Pacific heat wave threatens coral reefs in Hawaii and other regions

September 25, 2019 by  
Filed under Eco, Green

Comments Off on Pacific heat wave threatens coral reefs in Hawaii and other regions

Researchers predict a major marine heat wave in the Pacific Ocean could prove disastrous to the fragile coral reefs along Hawaii’s Papa Bay and similar coastlines. Warmer water conditions often trigger coral bleaching, a condition that leaves coral reefs susceptible to mortality. Coral reefs play a very significant environmental and ecological role. As a habitat, for instance, they support many species in the marine environment. Coral reefs likewise serve as a protective barrier, buffering shorelines against deleterious wave action, especially during typhoon season, to minimize coastal damage and to prevent erosion. Healthy reefs contribute to local economies, particularly through tourism as well as commercial and recreational fishing. Related: ‘The Blob’ returns — marine heatwave settles over Pacific Unfortunately, when water is too warm, coral become stressed. They consequently expel the algae , or zooxanthellae, that live in their tissues. In doing so, coral turn white, a condition known as bleaching. Prolonged loss of the algae eventually leads to the coral’s demise. When coral reefs are compromised, the loss cascades, often causing far-reaching ecosystem repercussions. Back in 2015, a prominent marine heat wave eliminated half of the Papa Bay coastline’s coral reefs that surround Hawaii’s Big Island. This year, marine scientists associated with NOAA similarly predict that another round of very warm water will occur in the region once again. “In 2015, we hit temperatures that we’ve never recorded ever in Hawaii ,” NOAA oceanographer Jamison Gove said. “What is really important — or alarming, probably more appropriately — about this event is that we’ve been tracking above where we were this time in 2015.” Earlier this September, NOAA researchers warned of the Blob’s return. The Blob — the moniker coined by Washington state climatologist Nick Bond during the 2015 heat wave — describes the vast expanse of unusually warm water that occurred in the Pacific Ocean from 2014 to 2016. It adversely impacted coral reefs, causing global bleaching and diminished coastal fisheries’ yields throughout the Pacific. To date, this year’s Blob is reportedly the second-largest marine heat wave ever recorded in the past 40 years, just behind the 2014 – 2016 Blob. As a result, forecasts anticipate an even warmer October, which could critically undermine the coral that are still recovering from the first Blob. “Temperatures have been warm for quite a long time,” Gove continued.  “It’s not just how hot it is — it’s how long those ocean temperatures stay warm.” While scientists are not yet able to pinpoint the exact causes for ocean temperatures warming, it is believed human-influenced climate change is a salient factor. Restoration efforts are in the works. Research suggests coral can be conditioned to withstand future onslaught of warmer water. Both scientists and coral hobbyists are on a mission to breed “super corals” resilient enough to avoid bleaching. It is hoped the introduction of these “super corals” into the environment will fortify reefs to better evolve amidst global warming conditions. Via Associated Press Images via Terri Stewart and NOAA

Original post:
Pacific heat wave threatens coral reefs in Hawaii and other regions

Earth911 Quiz #45: Ocean Warming Challenge

January 17, 2019 by  
Filed under Eco

Comments Off on Earth911 Quiz #45: Ocean Warming Challenge

Our oceans serve as a buffer to global warming by … The post Earth911 Quiz #45: Ocean Warming Challenge appeared first on Earth911.com.

More here:
Earth911 Quiz #45: Ocean Warming Challenge

Precycling Helps Shoppers Save

January 17, 2019 by  
Filed under Eco, Recycle

Comments Off on Precycling Helps Shoppers Save

Resolving to be a better recycler is a great New … The post Precycling Helps Shoppers Save appeared first on Earth911.com.

Originally posted here:
Precycling Helps Shoppers Save

Oceans warming 40 percent faster than previously thought

January 16, 2019 by  
Filed under Eco, Green

Comments Off on Oceans warming 40 percent faster than previously thought

  After discrepancies between climate models projecting higher levels of ocean warming and observational data showing lower temperatures, a recent article published in Science demonstrated that the world’s oceans are warming about 40 percent faster than previously projected.  Apparently, the higher numbers were right, and even though this gives scientists a better understanding of climate change , the reality of the situation could be alarming for marine life and coastal residents. “The Intergovernmental Panel on Climate Change’s (IPCC) Fifth Assessment Report, published in 2013, showed that leading climate change models seemed to predict a much faster increase in ocean heat content over the last 30 years than was seen in observations,” study author and University of California (UC) Berkeley graduate student Zeke Hausfather said in a UC Berkeley press release. Hausfather says that was a problem because this is something they need the models to get right. Now that the corrected records agree with climate models, it is an encouraging step that removes major uncertainty. Oceans are incredibly important when understanding the implications of global warming, as they can absorb more than 93 percent of the solar energy that becomes trapped by greenhouse gasses. Not to mention, ocean warming can lead to severe consequences such as sea level rise, stronger storms and loss of ocean life. Hausfather explains that the best place to see where global warming is happening is to look at the oceans. While current technological methods have allowed for better oceanic temperature readings, it was more difficult to obtain clear readings before the mid 2000s, when 4,000 floating robots called Argo were distributed. This network of robots dives into the ocean every few days to take temperature, PH and salinity readings. Before the creation of Argo, bathythermographs were the only thing that could take ocean measurements. Yet, they could only be used once because they couldn’t be recovered from the ocean floor. Now that we have accurate measurements, we can understand the steady increase of ocean temperatures. Hausfather wrote on Twitter that 2018 would beat out the second-place year (2017) “by a comfortable margin” for warmest year. Via EcoWatch Image via dimitrisvetsikas1969

Read more:
Oceans warming 40 percent faster than previously thought

Previously stable zones of Antarctica are now falling victim to climate change

August 1, 2018 by  
Filed under Eco, Green

Comments Off on Previously stable zones of Antarctica are now falling victim to climate change

Unlike its counterpart, West Antarctica, which has long been decimated by melting ice caps, East Antarctica used to be a safe zone – something scientists could depend on as a constant while they solved the more pressing destruction in the western part of the continent. Unfortunately, this is no longer the case. According to  research unveiled last week in the journal  Geophysical Research Letters , despite the higher elevation and colder temperatures found in the eastern portion of the Antarctic continent, warm ocean currents and rising global temperatures are now destabilizing two of its glaciers. The research has chronicled the lives of two glaciers in the coldest region on Earth for the past 15 years. These glaciers shield the Eastern zone’s land ice, descending from the ice directly toward the sea. This creates a naturally formed dam that, if disturbed, would affect the ice that covers the rest of the region by subjecting it to the warming ocean waters. The melting of these two massive glaciers alone would raise sea levels more than 16 feet (five meters), undoubtedly compromising the rest of the territory. In an interview with Earther , Yara Mohajerani, lead expert in the study and PhD candidate at the University of California, explained, “The East Antarctic ice sheet contains much more ice and sea level potential than any other ice sheet by far, making it of crucial global significance.” Past research has shown the disappearance of similar glaciers in the East Antarctic region when carbon dioxide levels in the atmosphere have reached levels comparable to those found today as a result of human activities. Related: Scientists uncover giant canyons under the ice in Antarctica Scientists believe that, due to the circulation of warm ocean water under the two glaciers, they’ve been losing mass for quite some time. To help quantify the losses, NASA provided the researchers with its Gravity Recovery and Climate Experiment (GRACE) satellite, which measures small changes in gravity. GRACE collected data from 2002 to 2017, and the new study reveals that the glaciers are losing 18.5 gigatons of ice each year, or the equivalent of 7.4 million Olympic-sized swimming pools. While this is minuscule in comparison to losses in the rest of Antarctica, the location of these glaciers makes their survival central to the discussion of East Antarctica’s stability and, therefore, the state of the continent as a whole. + Geophysical Research Letters Via Earther

Read more:
Previously stable zones of Antarctica are now falling victim to climate change

Could Hyper-Evolved ‘Designer’ Coral Reefs Survive in Warmer Oceans?

May 13, 2014 by  
Filed under Eco, Green

Comments Off on Could Hyper-Evolved ‘Designer’ Coral Reefs Survive in Warmer Oceans?

Coral reefs aren’t just home to a whole ecosystem of sea life, they also protect nearby land from wave surges – but the 2014 National Climate Assessment reports that reefs are in big trouble. Fortunately, a team of researchers in Hawaii (the state with a majority of the United State’s coral reefs) has a clever plan to save the reefs. Scientists are planning to cross-breed reefs that are better equipped to live in the warmer oceans of tomorrow. Read the rest of Could Hyper-Evolved ‘Designer’ Coral Reefs Survive in Warmer Oceans? Permalink | Add to del.icio.us | digg Post tags: Climate Change , climate change coral reef impact , climate change coral reefs , climate change impact , climate change ocean , climate change ocean impact , climate change sea , coral feef die off , coral reef crisis , coral reef dying , evolved coral reef , forced evolution , Hawaii coral , Hawaii reefs , manmade coral reef , ocean acidification , ocean warming , speed evolution , speeding up evolution , super evolved coral reef , ultra-evolved coral reef

Original post: 
Could Hyper-Evolved ‘Designer’ Coral Reefs Survive in Warmer Oceans?

New Report Reveals Humans are Causing the Warming of the Ocean’s Upper Layers

June 20, 2012 by  
Filed under Green

Comments Off on New Report Reveals Humans are Causing the Warming of the Ocean’s Upper Layers

A new  report from Lawrence Livermore National Laboratory has stated that the simultaneous warming of the upper layers of all seven seas over the past 50 years cannot be explained by natural climate variability alone. The scientists’ computer modelling study reveals that human alterations to the environment, such as the observed increases in greenhouse gas, are causing the warming of the world’s oceans , and as an result, affecting the natural climate cycles. Read the rest of New Report Reveals Humans are Causing the Warming of the Ocean’s Upper Layers Permalink | Add to del.icio.us | digg Post tags: Climate Change , global warming , great garbage patch , lawrence livermore national laboratory , natural climate variability , nature climate change , ocean layer warming , ocean pollutants , ocean warming

See the original post here: 
New Report Reveals Humans are Causing the Warming of the Ocean’s Upper Layers

Bad Behavior has blocked 2325 access attempts in the last 7 days.