Archive for May, 2011
Responsible For Residential Solid Waste Removal?
Residential solid trash, also called urban solid waste and municipal solid garbage, is refuse that normally comes from households. It is either in solid or semisolid form. There are five general categories of solid garbage that include:
1) Biodegradable waste: food and kitchen
2) Recyclable material: paper, glass, bottles, cans, metals, and certain plastics.
3) Stagnant rubbish : construction, dirt, rocks, and debris.
4) Assorted waste: clothing, plastics,etc.
5) Household hazardous waste: toxic such as paints, chemicals, light bulbs, spray cans, fertilizer and pesticide containers, batteries,etc.
Cities and towns generally contracts out solid garbage removal services. They will submit bids, assess each bid, and recommend a company. The rubbish company will bill the city or town. These companies are privately owned so if a person has a lot of waste after a project such as home renovation, they can hire a garbage removal company to remove the refuse.
Because of environmental regulations and a growing demand for a cleaner environment, junk companies are now performing the following services:
Recycling Programs: Curbside recycling is usually available to all residential customers. Customers will separate their recyclables according to paper and plastics for curbside pick up. Depending on the contract, this is normally done every two weeks. There can be special recycling programs such as Christmas tree recycling. The trees are then made into mulch. Other special programs a town or city can offer are Spring and Fall Clean Ups. They are designed to encourage residents to get rid of large amounts of garbage.
Hazardous Materials: Every year, millions of people accumulate such hazardous waste products as batteries, paints and stains, cleansers and polishes, motor oil, antifreeze, pesticides and herbicides,etc. These are dangerous to the environment, people, and animals. A rubbish removal service is trained to remove these products safely and responsibly. They will sort and categorize the hazardous materials before storing them in containment units. The contracted hazardous waste hauler packs the items in drums and sends them to hazardous rubbish incinerator or other treatment facility for proper disposal. Some materials, such as used motor oil, lead-acid batteries and antifreeze, are recycled.
Compost Services: Many cities and towns offer a compost service. They will provide compost bins for people to place such items as kitchen food garbage, newspaper, and other items that can be composted. A contracted junk removal company will pick up the compost left on residential curb sides.
Energy Recovery Plants: Plants that convert rubbish to energy are popping up all over the country. These plants burn garbage to heat water which produces steam in much the same way power plants burn coal, oil, natural gas, or wood. The steam can cause a turbine to produce electricity. Junk removal companies that have energy recovery plants in their area will make use of these services.
Special Handling waste Removal Services: Cities and towns will have a contracted service to remove large items such as tires, air conditioners, household appliances, and construction debris. Tires are sent to a recycling or recovery facility and household appliances, after chlorofluorocarbon gas removal, are taken to recycling stations.
Individual Contracted waste Removal Services: There are situations where a person has too much waste to be removed by a city or town removal service. They will then enlist the services of a private company. They are trained and certified to dispose of waste, compost, and recycle residential goods. For a nominal fee, a company will come to your home and remove all of your excess trash.
Because of growing environmental concerns, most companies dispose of waste in ways that will have the least environmental impact. You will feel good knowing that you are doing your part to protect and conserve the environment.
It is important for individuals to be mindful of what is in the trash. That way, the environment can be better protected. If you are looking for a junk removal and rubbish company located in the GTA please visit us at: Garbage Removal Toronto.
Temple Mecca Black Stone
Homemade Biodiesel Kits Are Used to Make Biodiesel Fuel by First Timers
The cost of fuel has gone up again that people are thinking of alternative ways to save up on other things just so they can still continue to make use of their vehicles. Actually, there is a better way by which we can save up on fuel without having to let go of other necessities or luxuries that we have in our life. Sometimes we need all this to keep us going. When you take away one or two, you may take away your only source of happiness. So think twice before cutting off hobbies or things that you are already accustomed to.
One thing by which we can save gas is if we make it ourselves. It is possible since homemade biodiesel kits are available for consumers to buy them. There are instructions online and there are even step-by-step videos on how to make biodiesel fuel. These are especially useful for people who prefer to see it than reading about it. The great thing about seeing how it is made is you can actually see the equipments that are being used. So you can always pattern your equipment with what is being shown.
Since you will be doing it yourself, there are a couple of things you have to watch out for. You have to watch out for methanol and lye because it is dangerous. Aside from that, since you will be making use of heat and vegetable oils, fire is always a possibility. First time makers of biodiesel fuel should be extra careful when proceeding and like any other endeavor it takes practice to perfect it.
Cheryl Forbes owns and operates the website http://www.homemadebiodieselkits.com
THE 3 Rs – Lazy Ways to Reduce, Reuse and Recycle
The 3 Rs (Reduce, Reuse, and Recycle) is no longer simply a mantra for environmental activists, it’s a ticket to saving you money while you consider the planet. The 3Rs ask you to buy less, reuse more, and recycle products at the end of their useful life-wonderful guiding principles for reducing our environmental footprint and bringing our lifestyles into balance with nature. But in practice, how many of us are really willing to cut back on the stuff we want to own, to reuse what we’d like to throw out, and to recycle when doing so is often incredibly inconvenient? Fortunately for budget-conscious Lazy Environmentalists, the 3Rs are receiving a twenty-first-century facelift, making them easy to implement and even easier on the wallet.
Reduce, the first of the 3Rs, releases you from the hassle, expense, and waste of unwanted stuff while helping you use less energy and create less trash. And while most of us can’t imagine life without our most prized four-wheeled possession, the first place to embrace Reduce is with our cars. That’s because our automobiles generate about half of our personal greenhouse gas emissions-the other half comes from our homes.
Today, you can enjoy the freedom of being in the driver’s seat while eliminating all of the expense of owning-or leasing-and maintaining a car by joining a car-share service. Zipcar is leading the way. Available in more than 40 U.S. cities, Zipcar lets members locate cars conveniently parked at designated spots around the city and reserve them for an hourly fee (typically between $10.50 and $16.50). Members arrive at the parking spot, swipe their membership card over the windshield sensor to unlock the door, hop in, and go. There’s no need to pay for gasoline or insurance; Zipcar has got you covered. You won’t sacrifice your ride either; Zipcar lets you choose from models like the BMW 325, Mini Cooper, Honda Fit, Volkswagen Jetta, Toyota Prius, Honda Civic Hybrid, Volvo S40, Mazda 3, and Subaru Outback. According to the company’s surveys, over time Zipcar members reduce their car usage by as much as 50 percent. Zipcar estimates that each of its cars removes the equivalent of about 15 privately owned vehicles from the road. Other car-sharing services are popping up across the country and around the world. Visit Carsharing.net for a comprehensive list.
Reuse-the middle child of the 3Rs-has been a part of our lives before we were “eco” anything (eco-conscious, eco-savvy, even a tentative eco-curious). Think about it: Every day, we reuse items like T-shirts, cereal bowls, and underwear without a second thought. We don’t toss them after one use. We reuse. The secret to twenty-first century Reusing is to discover how to reuse other people’s really cool stuff as well as our own.
Reuse logic is in effect at Goozex.com, where gamers gather to swap their video game. Visit the website, create an account and list the games you own that you’d like to trade. Then Goozex quickly locates other gamers who want them and makes instantaneous matches for you. With each game you mail, you earn Goozex points, which you can then use to acquire the games you want from other members. Instead of spending lots of money on new games (and paying for all that packaging waste), you’ll pay Goozex $1 each time you receive a game. Whether you’re partial to Xbox, Wii, Nintendo, or many other gaming platforms, the Goozex trading community has got you covered. Get your reused copy of Call of Duty 2 or NCAA Football 09 today.
Swapping websites are emerging in all kinds of categories. Bookworms can browse more than two million titles available for trade at Paperbackswap.com. Movie collectors can visit Swapadvd.com to trade both new and classic DVD titles. CD fans (you know you’ve still got ‘em) can tap into more than 130,000 titles available at Swapacd.com. And new and expecting parents can trade for baby strollers, bibs, bedding, bumpers, and more at Zwaggle.com.
Recycle, the last of the 3R trio, is the most transformative of the Rs. When we recycle, we’re giving used products the chance to be reborn as something new. That’s especially the case thanks to companies like Preserve that has partnered with Stonyfield Farm to recycle its yogurt cups-from organic yogurt, of course-into ergonomic plastic toothbrushes, razors, and an assortment of colorful kitchenware (and now also does the same with Brita pitcher filters).
TerraCycle, another green innovator, is on pace to redefine much of America’s relationship with trash. The company that began with its signature Plant Food-made from worm poop, packaged in empty Pepsi bottles and sold at the likes of Home Depot and Wal-Mart-has evolved into an innovation powerhouse that continually introduces new products made entirely from waste. Take the E-Water Trash Cans and Recycling Bins available at OfficeMax for $10.99 each and made from crushed computers and fax machines (that would otherwise end up in a landfill). Or the rain barrels and composters made from Kendall-Jackson oak wine barrels that sell for $99 each at Sam’s Club. They’re both prime examples of a company that sees opportunity where others see garbage. In so doing, TerraCycle helps us make attractive choices that are mindful of the planet and our wallets.
Josh Dorfman is an environmental entrepreneur, media personality and author of The Lazy Environmentalist: Your Guide to Easy, Stylish, Green Living. He is also the founder and CEO of Vivavi, a retailer of modern, green furniture and home furnishings. His latest book, The Lazy Environmentalist on a Budget: Save Money. Save Time. Save The Planet, is now available. For more information, please visit: http://www.lazyenvironmentalist.com
Farmers Are Being Pushed to Increase in Size Or Get Out! How to NOT Be One of Them
It doesn’t matter what size it is, your farm is an ever increasing asset, even more so if you can provide chemical free, clean food.
Australian conventional food prices are forecast to quadruple in price over the next five years. The reason is Asia. We are in the middle of a global revolution in the way we think, eat and live.
This week I received this news from Craig Sobey who has recently toured China with representatives from five city councils, Austrade and Regional Development Victoria and reports that there is a real opportunity for all to take a significant market share in this period.
Basically, if it is Australian and premium quality there is a ready market. Australia is seen as a source of safe food regardless of whether it is organic or conventional. At this stage price does not appear in the conversation, just consistent supply and traceability. The interest in all products represented included convenience food packages (pre-cooked), meats, dairy, wines etc.
Did you know:
- This co-op now owns China’s fifth biggest supermarket chain with over 500,000 stores.
- There is a farmer’s co-op representative with over five million members?
- 6,000 of them over 30,000 sq metres. The supermarket turned over 18 billion dollars in 2007 with revenues growing by 150 % per annum on average.
- They have offered an entire Australian Pavilion for Aussie produce including organics in their premiere stores in Beijing and Shanghai. Organic Wines were the big attraction.,
- China creates 80,000 millionaires each year.
- There are over 350 million middle class and a niche market of super wealthy Chinese? (Craig told me that French wine is selling as much as $600 a bottle and even one watermelon cost $40!).
However there is real interest in China for organics (which they refer to as Green Food) and particularly food safety/ traceability which is the paramount concern for all serious buyers they met. A new Australian wide network (not for profit) company is being formed for all sections of the organic market. This is so that a pool of members can tackle the export markets together. Its goal is to give you an export premium to help make membership very appealing.
The time is ripe for all growers to stop and think about the future of their farming. What choice will you make? Your future will depend on it. Even if all of Australia’s certified organic farmers, processors etc. were to unite they could not supply the market in China alone and therefore there is untapped potential over the next ten to twenty years to be further developed.
Farming Secrets is a club for farmers who want to farm healthier and more profitably. Farming Secrets reconnects them with the experts through supporting them with one to one help and constant support from experts in order to fast track their farming goals that much quicker.
Hugo Disler
For More information about Natural and Organic Farming visit http://www.farmingsecretsblog.com
To discover the secrets of natural and profitable farming, visit http://www.farmingsecrets.com
stove demo in Phuket
Conservation Efforts
How often have we come across lovely historical sites suffering from neglect and misuse? Every country needs to take good care of its historic places. Because things like malls, stadiums and highways can be built again. But a historic place which is neglected and misused will lose its glory and slowly disintegrate into zilch. And no amount of action plan or noble intentions can ever bring a historic place back to its former glory when it has been totally neglected and abused by us. The oldest of historic sites can be preserved for the future generations if we have a proper plan for their conservation.
Conversation of historic places requires a systematic approach. If the historic site is conserved with the help of a proper plan, it will show amazing results. While chalking out a plan for the conservation of historic sites, it’s very important to keep the costs under control. If the costs go up to an unwanted level, it will draw criticism from the general public and act like a death sentence for the conservation of other similar projects in the future.
The first thing which should be done by the restoration experts is to check the age of the historic site. This can be easily achieved by conducting a series of scientific tests. It can also be done if there are public or archaeological records of the site. Once we know the actual age of the historic site, we get to know the actual worth of the site – this doesn’t mean that if a site is not very ancient – it’s not worth taking care of.
Also check the sturdiness of the materials which have been used on the historic site. This will need a proper list of all the materials used on all the structures found on the site. Factors such as the effect of temperature, humidity, weathering, fire, air pollution, storms and flood on the material found on the site needs to be studied in detail, so that best possible plan to prevent further degradation of the site can be prepared.
Don’t forget to note the architectural design of any structures present on the site. This is needed to take help of conservation experts according to the style they specialize in. Taking the help of the best of experts who are not competent in the architectural design displayed at the historic site would create a major problem for your conservation project.
Your team of conservation experts also need to keep a track of all the past repairs and changes made on the historic site. The problems faced by the previous restoration team while restoring or repairing the historic site too needs to be researched and noted down. Always remember materials like wood and leather rot quite easily, on the other hand stone articles and pottery items always manage to survive better. Once you have finished your complete study of the historic site, you can then do the restoration part of the site step by step in a phased manner till it is complete. You might even have to restrict the number of visitors, once it has been restored, as although the site has got its former glory, it might not be in a state that it can be exposed to an endless number of people everyday.
For more information on the historical sites of the world, visit Matt’s website about world historical sites, especially his favorite place, tikal.
SMIT Tensile Solar: lightweight, modular, solar power – Core77
We’ve been a fan of Brooklyn-based SMIT (Sustainably Minded Interactive Technology) since we first saw their modular and beautiful wind-powered solar panels, “Solar Ivy” at MoMA’s Design and the Elastic Mind exhibit back in ‘08. …
Sempra And Soitec Cement Solar Ties
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ET Solar doubles length of module warranty | PV-Tech
China’s ET Solar has doubled the length of its module warranty. Under the terms of the new product commitment, which came into force at the start of May, ET Solar has extended its coverage for defects relating to workmanship and …
Limited Lifetime of the Solar System
With the loss of Pluto, the number of major planets in our solar system has dropped to eight. If the current trend continues, then come April 13, 3703 the solar system will no longer have any major planets. …
Indirect Solar Forcing of Climate by Galactic Cosmic Rays: An …
I’ve made calculations based upon satellite observations of how the global radiative energy balance has varied over the last 10 years (between Solar Max and Solar Min) as a result of variations in cosmic ray activity. …
If you have not given up plastic bag for your own reusable bags yet, no worries, you can still make a difference! Recycle them! How? Well, there are many ways you can recycle plastic bags. We have listed a few to get you started. Use your imagination! 21 Ideas for Recycling Plastic bags: * for filler when sending packages or when you want to store fragile items. * use old plastic bags for liners in your bathroom or office trash can. * to pick pet waste. * use them as baby bib. * arts and crafts. (off site link) * reuse plastic bags over and over when you grocery shop. * store wet bathing suits in them when at the pool or beach. * dispose of dirty diapers when out and about. * put hubbies lunch in them instead of a lunchbox. * litter box liners. * use plastic bags instead of Ziploc bags when possible. * store holiday items in them. * as a cap when giving yourself a hot oil treatment. * make a kite with your kids. * as a toiletry bag when traveling. * shred and cut them to make plastic bag confetti. * use them as gloves when cleaning. * have your kids put them over their shoes when playing in the snow to keep shoes dry. * cut them in to big squares and let your children finger paint with them. (under supervision, of course) * send them to the recycle bin at your neighborhood grocery store. * or…avoid using plastic bags all together and REALLY make a difference! This is just small list to get you started. There are MANY ways that you can recycle and reuse plastic bags. You can also Google “recycle plastic bag ideas” and you will find tons more! Copyright © Green Christian Network, All Rights Reserved About the Author: Cindy Taylor is a Christian stay at home Mom who love the Lord and cares about God’s planet. You can see her passion and writing at her website, Green Christian Network (http://greenchristiannetwork.com).
Green Energy Technologies
Green Tip – Recycle Your Plastic Bags
The World Energy Crisis – How Can We Cope?
The world has some decisions about sources for future energy. The increase in population and increasing demand present a problem. The cost of conventional non-renewable energy sources is on the rise. Oil, gas, water, coal, and other natural resources have a limit to their supply.
Gas, Oil and petroleum products are more expensive than ever, and the supply is running thin. Many may think that the planet may never run out of these however it seems that drilling these supplies is becoming ever more difficult. There have been three major energy crises thus far.
Due to the shortage of resources and decreased output, the cost of these energy sources has increased rapidly over the years.
How long will it take before all of these resources are exhausted? The truth is that we really do not know. Experts say that 50% of the world’s supply of available oil has been exhausted. Every day the demand is increasing and it could take mere decades to exhaust the supply of crude petroleum.
What could possibly be done about this situation? How can we as a society cope with the energy crisis at hand? What can we consumers do about this? We can all start by understanding the importance and impact that energy has in our lives. These supplies of energy should not be taken for granted. Additionally we should avoid wasting energy.
There are simple things that we could do to conserve such as getting involved with a car pool, check our car tires for proper inflation, and using fuel efficient vehicles. If we can cut down on our use of fuel and oil in everyday activities we can be further prepared for the impending energy crisis.
Another way that we can cope with the energy situation is by utilizing renewable energy sources. Solar and wind power systems are becoming ever more available. These power solutions are feasible, cost effective and environmentally friendly. In addition, you save on your power bill and help contribute towards a better future for our world.
Make power at home with solar and wind energy to eliminate your power bill. Get our complete guide at EnergySolutionsDIY.com.
Free Energy Economics
Yahoo Vs Google – Who’s Greener?
Silicon Valley is known for both innovation and hype. Recently, this pool of innovation has extended beyond bandwidth to the protection the environment. Google and Yahoo, the search engine giants, are both headquartered in the Valley and have been making headlines by greening their offices, reducing energy consumption, and carbon trading. The PR motivations are obvious, but are the green benefits really there? To set apart the hype from reality, we have analyzed the green value of both Google and Yahoo’s headquarter facilities.
We looked at the ecological services provided by green landscape features such as trees and open space (i.e. grass). Grass and trees are pervious surfaces, meaning they allow water to permeate into the ground. Roofs, sidewalks, patios, and asphalt parking lots are examples of impervious surfaces, where rainwater drains into the public storm drains. Heavy metals, oil, and other pollutants are carried off parking lots in rainwater, which often lead directly to open water habitats, where fish, birds, and reptiles live.
In terms of ecological services, trees and grass have been proven to:
1. Remove and store carbon from the atmosphere,
2. Remove certain airborne pollutants,
3. Permits rainwater to seep into the ground as opposed to draining into the stormdrains, and
4. Remove certain waterborne pollutants.
Here is a look at how green Google and Yahoo really are and how the measure up against each other.
Google Green Report
Google’s headquarters, the Googleplex, covers 44 acres, nearly 50% of which is grass or tree canopy. This is an impressive paved to open space ratio. The grass and trees on the Googleplex remove roughly 2 tons of carbon from the atmosphere per year, or 0.04 tons per year per acre. In addition, 530 lbs. of air pollution are removed per year (e.g., ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, and particulate matter), or 12 lbs. per year per acre. It was assumed that the parking lot of the Googleplex is asphalt, and not a type of porous pavement, so the cost of managing rainfall runoff from the Googleplex is $4,474 per year, or $103 per year per acre. The abundance of grass and tree canopy on the Googleplex go a long way to offset the water quality impacts of the paved surfaces (mainly the parking lot). On average, the grass and trees reduce water pollution by 6%, as opposed to the entire property being paved.
Yahoo Green Report
The Yahoo headquarters, Yahooplex, covers 28 acres, a third of which is grass or tree canopy. This is a classic ratio of paved to open space for large office complexes in California. So far, par for the course. The Yahooplex removes 0.36 tons of carbon from the atmosphere per year, or 0.01 tons per year per acre. 114 lbs. of air pollutants are removed per year, or 4 lbs. per year per acre. In terms of rainfall, the cost associated with runoff is $9,219 per year, or $331 per year per acre. The grass and tree canopy help offset the paved areas with a 2.3% reduction in water pollution as opposed to the entire property being paved.
The final green analysis?
Google kicks Yahoo’s butt, largely due to the forethought, or luxury, of the Googleplex having 50% of its property surface providing green services. The good news for both Google and Yahoo is that over time, as trees grow, so will the tree’s canopy and mass, thus storing more carbon and removing more air pollutants.
Green next steps for both Google and Yahoo is to:
- Install porous parking surfaces, allowing up to 80% of rainwater to seep into the ground,
- Install green roofs, absorbing rainwater while reducing cooling costs and energy consumption, and
- Planting larger trees on the south and west sides of the buildings to reduce cooling costs and energy consumption.
While we crunched the hard numbers to settle the Google vs. Yahoo green debate, this report illuminates the great opportunity that awaits these two Silicon Valley giants to harness the ecological services of green surfaces.
Chris Erichsen is a GIS Mapping consultant with the Erichsen Group, GIS and Mapping in northern California. He has over 10 yrs of GIS experience and helps many industries around the world apply GIS mapping technology. Learn more examples of GIS mapping capabilities.
Price of solar wafers in China falls below US$2.5/unit Weak demand in the solar market continues to put pressure on the prices of upstream materials such as wafers. According to industry sources, six-inch solar wafers have been quoted below US$2.5/unit by first-tier China-based … Alternative Energy solar panels windmills and nuclear energy … Question by sallysal: Choice Power solar panels windmills and nuclear power? I have to write a paper thats due in a handful of days reguarding alternative power, solar panel (style, engineering and effiecency) windmills (design and … Solar power in Florida « BraveNewClimate Recently, the company has been building power plants based on renewable energy sources such as photo-voltaic and solar thermal power. Academics write about such projects but FP&L builds and operates them. I decided to take a look at one … Alternative Energy â?? Solar Power Four problems with wind and solar power are: the area needed for the plants, energy storage when the wind or the sun is not available, transmission costs, and energy losses in storage and transmission. For solar power in the U. S., … Cogentrix: Solar Thermal Tech a Tough Sell, CPV Finds Takers … Goldman Sachs’ power generation company, Cogentrix Energy, bought two decades-old solar thermal power plants in California in 2009 to gain a foothold in the solar market. But these days, the company is more interested in developing …sea power technology
Lets Revisit Some of the Debates For the Global Warming Theory
We have all heard about Global Warming, where the planet’s atmosphere is supposedly heating up. Of course, we as common citizens have no real proof, only what our scientists tell us, along with the Think Tanks and mass media. But how can we trust this when Global Warming researchers have been paid 100s of millions of dollars, and they know if they disagree with global warming theory the money stops being funded and they are out of work?
One of the most fascinating debate points for Global Warming goes something like this; “The majority of scientists say global warming is real and we are already seeing its impact (the drought in the Western USA and the long term drought in Australia.”
This is seriously a flawed argument and let me tell you why. You see it is irrelevant and may not even be true. After all, 55% would be most of the scientists and thus the majority, still leaving a huge contingency of doubters, with plenty of data and research to back up the opposite point of view.
Likewise, during Copernicus’ day only one man believed the world was round, everyone else said it was flat; so the “majority of scientists” argument is irrelevant; majorities don’t mean anything. If you were one of a 100 people and they all jumped off a bridge because they agreed to, would you jump too? That is illogical.
Now then, the second part of the argument has to do with droughts in the world. And we all know that droughts come and go. Remember the Dust Bowl “Grapes of Wrath” in the US? And in the 1950s Australia had a drought just as bad during the same period, same as the one they are having now. This one we notice more because there are more people demanding the same amount of water.
In California, the snowpack this year is normal and anymore puts us above normal, thus, the drought theoretically is over? So, does that mean this so-called Global Warming is over? Of course, not the powers that be, behind global warming will continue to pursue this until it’s no longer in their interests. Think on this.
Lance Winslow – Lance Winslow’s Bio. If you have innovative thoughts and unique perspectives, come think with Lance; http://www.WorldThinkTank.net/.
GLOBAL PULSE: The Color of Stimulus
Antarctic Peninsula Climate
Antarctic Peninsula has been experiencing warming trends for over 40 years with an increase of 2-3 C, thus correlating with lower sea ice conditions in the Amundsen Sea and Bellinghausen Sea. Warming temperatures around the Antarctic Peninsula is changing the dynamics of the ecosystem. The rise in atmospheric temperature is causing increasing in melting of freshwater glaciers and ice shelves. Fresh water emerging into the sea counteracts the salinity within a regional area. Changes identified are;
• Decrease in sea water salinity up to 60 miles offshore
• Lower sea ice
• Decreased krill population
• Increased salp (open ocean tunicate that is reminiscent of a jelly-fish) population
• Increase in cryptophytes (single cell phytoplankton algae)
• Decrease in diatom phytoplankton
• Increase in carbon sequestering in deep ocean sinks
• Decrease in carbon availability in the food chain
The Antarctic Krill (Euphausia superba), a small shrimp like crustacean is the most important zooplankton species associated with the sea ice and plays a crucial role in the Antarctic food web. On a regional basis the amount of krill appear to be declining in the southern ocean. There are definitely lower trends in krill population during lower sea ice years around Antarctica. Part of the rational for the population decline is that ice algae rely on the sea ice for protection and growth. The krill need the sea ice in order to feed on the algae and phytoplankton.
Krill occur in groups or large swarms. They are less than 3 inches in size and feed primarily on phytoplankton and sea ice algae. Krill filter diatom phytoplankton out of the water column and scrape algae from the sea ice. Apart from frequenting the sea ice to feed, krill in particular juveniles, seek protection from predators in the many nooks and crannies formed by the deformed sea ice floes. Krill is the staple food of many fish, birds and mammals in the Southern Ocean. The biomass of Antarctic krill is considered to be larger than that of the earth’s human population.
Sea- ice algae utilizes atmospheric carbon dioxide for its energy source, the same as plants do on land. Krill diet of the sea-ice algae and phytoplankton is essential for converting the carbon for use in higher animals such as fish, birds, and whales. This carbon conversion is a very critical role in predatory nutrition. Additionally krill do eliminate some of the silica from the diatom shells and carbon in sticky balls that sinks nearly two miles into the deep ocean. These cold, deep waters are able to contain carbon dioxide and prevent the gas from rising to the surface, thus immobilizing carbon that is not passed into the food chain.
In recent years there have been increases in algae phytoplankton called cryptophytes. Mark Moline, California Polytechnic State University, states that the cryptophyte population correlates with warmer temperatures and lower salinity waters that are produced by the melting of the freshwater glacier. Cryptophytes measure around 2 mm, while other plankton in the Antarctic waters are much larger and measure 15 to 270 mm. Along with the increase in cryptophyte population an increase in salp, a pelagic tunicate, population has also occurred. There are differences between salps and krill. Salps feeding efficiency is capable of grazing on smaller food sources less than 4mm, whereas, the Antarctic Krill efficiency declines on any food less than 20 mm. The salps compete with krill for the phytoplankton and thus decrease the krill population. Additionally the salps feed on krill larvae, which also cause a decline in krill numbers.
The warming trend in the Antarctic Peninsula is showing a pattern of increasing cryptophytes over other phytoplankton and the increase in the salp. This influence is due to the low sea ice and the lowering of the salinity in the seawater. Salps and cryptophytes do better in the lower salinity, while the krill and other plankton are unable to tolerate the increased freshwater regime from the glacier ice melts. This selectivity gives preference to the salps as the dominant species while decreasing krill abundance. During lower sea ice seasons the density of krill declines while the salp population increases.
Carbon sequestering into the deep ocean from the algae and phytoplankton occur by both the salp and krill. Both species eliminate the atmospheric carbon received from the primary producing algae by producing fecal pellets by the salps and sticky balls by the krill, thereby, reducing the amount of carbon dioxide in the atmosphere. The salps though sequester more carbon into the cold deep ocean than the krill. However, the krill provides the most efficient pathway for carbon transfer up into the food chain. The cryptophyte dominated waters are less efficient in the food chain due to increased feeding by salps and the difficulty of the krill to utilize the cryptophytes as a food source. Migration patterns by penguins are changing, in part due to the changing krill population. Krill is a mainstay diet for penguins, and if the krill population changes, many other ecological changes occur with it.
Steve Bynum has worked at Palmer Station along the Antarctic Peninsula. He not only enjoyed the ecosystem along the Bellinghausen Sea but he has also witnessed the changing climate conditions.
Join Steve at http://www.climatechangenewsletters.com as we take a journey to discover the warming and cooling effects of our planet.
Food & Technology Key