International
Climate change is draining the world’s oxygen lakes Smart news
/https://public-media.si-cdn.com/filer/66/9c/669cab94-c226-4209-b6e9-75b58d187316/266268_web.jpg)
Oxygen levels in the world’s lakes are declining due to climate change, according to new study published last week in the journal Nature. Global warming is raising water temperatures, which reduces the amount of oxygen water it can hold. Less oxygen can cause problems for fish and other freshwater wildlife, reports Damian Carrington for custody.
The study analyzed changes in water temperature, clarity and oxygen content for 393 lakes located in temperate climates in North America, South America, Asia and Europe over time. For some lakes, the data stretched back to 1941, but most recordings began in the 1980s, reports Kirsti Marohn for Minnesota Public Radio (MPR).
Since the 1980s, the average oxygen content in these lakes has dropped 5.5 percent near the surface and dropped by 18.6 percent in deep water, according to the study.
“The whole complex life depends on oxygen. It’s the support system for aquatic food networks. And when you start to lose oxygen, you have the potential to lose species,” says Kevin Rose, a freshwater ecologist at the Rensselaer Polytechnic Institute and old study author in a declaration. “Lakes are losing oxygen 2.75 to 9.3 times faster than the oceans, a decline that will have impacts on the entire ecosystem.”
The faster drop in oxygen to depth is an indirect consequence of the hottest and longest summer caused by climate change in many parts of the world. A longer and hotter summer creates a greater temperature mismatch between surface-heated water and deeper, cooler waters. The larger the temperature difference between the two layers of water, the less they are prone to mix, resulting in an increase in what researchers call “stratification.”
“Increased stratification makes the mixing or regeneration of oxygen from the atmosphere into deeper waters more difficult and less frequent, and oxygen droplets dissolved in deep water,” Rose said in the statement.
Rose tells MPR that when spring comes earlier, as well research has shown it is happening more often under climate change, that stratification can be established at the beginning of the season and last longer, which interrupts deep water from oxygenated water on the surface for a longer period of time.
In 87 of the lakes studied, the oxygen levels of the surface water actually appear to have been rising, despite rising temperatures. Rose says most of these lakes were close to highly developed farmland and are likely to see increased pollution from nutrients such as nitrogen and phosphorus commonly found in manure and compost.
“The fact that we are seeing an increase in dissolved oxygen in those types of lakes is potentially an indication of widespread increases in algal blooms, some of which produce toxins and are harmful. Data are missing taxonomically, however, we can not say. eventually, but nothing else we are aware of can explain this pattern, “Rose said in the statement.
Hans-Otto Poertner, an ecologist studying the effects of climate change at the Alfred-Wegener Institute who was not involved in the paper, tells custody that this “new study provides a much-needed global overview of what is happening on the planet’s limited freshwater stores” as a result of climate change, adding that lakes are small, isolated systems compared to the oceans and are more sensitive to change as a result.
“Climate change, along with [agricultural pollution]”threatens unprotected freshwater systems, adding to the urgency of drastically reducing emissions,” Poertner told custody.
What Are The Main Benefits Of Comparing Car Insurance Quotes Online
LOS ANGELES, CA / ACCESSWIRE / June 24, 2020, / Compare-autoinsurance.Org has launched a new blog post that presents the main benefits of comparing multiple car insurance quotes. For more info and free online quotes, please visit https://compare-autoinsurance.Org/the-advantages-of-comparing-prices-with-car-insurance-quotes-online/ The modern society has numerous technological advantages. One important advantage is the speed at which information is sent and received. With the help of the internet, the shopping habits of many persons have drastically changed. The car insurance industry hasn't remained untouched by these changes. On the internet, drivers can compare insurance prices and find out which sellers have the best offers. View photos The advantages of comparing online car insurance quotes are the following: Online quotes can be obtained from anywhere and at any time. Unlike physical insurance agencies, websites don't have a specific schedule and they are available at any time. Drivers that have busy working schedules, can compare quotes from anywhere and at any time, even at midnight. Multiple choices. Almost all insurance providers, no matter if they are well-known brands or just local insurers, have an online presence. Online quotes will allow policyholders the chance to discover multiple insurance companies and check their prices. Drivers are no longer required to get quotes from just a few known insurance companies. Also, local and regional insurers can provide lower insurance rates for the same services. Accurate insurance estimates. Online quotes can only be accurate if the customers provide accurate and real info about their car models and driving history. Lying about past driving incidents can make the price estimates to be lower, but when dealing with an insurance company lying to them is useless. Usually, insurance companies will do research about a potential customer before granting him coverage. Online quotes can be sorted easily. Although drivers are recommended to not choose a policy just based on its price, drivers can easily sort quotes by insurance price. Using brokerage websites will allow drivers to get quotes from multiple insurers, thus making the comparison faster and easier. For additional info, money-saving tips, and free car insurance quotes, visit https://compare-autoinsurance.Org/ Compare-autoinsurance.Org is an online provider of life, home, health, and auto insurance quotes. This website is unique because it does not simply stick to one kind of insurance provider, but brings the clients the best deals from many different online insurance carriers. In this way, clients have access to offers from multiple carriers all in one place: this website. On this site, customers have access to quotes for insurance plans from various agencies, such as local or nationwide agencies, brand names insurance companies, etc. "Online quotes can easily help drivers obtain better car insurance deals. All they have to do is to complete an online form with accurate and real info, then compare prices", said Russell Rabichev, Marketing Director of Internet Marketing Company. CONTACT: Company Name: Internet Marketing CompanyPerson for contact Name: Gurgu CPhone Number: (818) 359-3898Email: [email protected]: https://compare-autoinsurance.Org/ SOURCE: Compare-autoinsurance.Org View source version on accesswire.Com:https://www.Accesswire.Com/595055/What-Are-The-Main-Benefits-Of-Comparing-Car-Insurance-Quotes-Online View photos
picture credit
to request, modification Contact us at Here or [email protected]
 |
 |
 |
