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Tag: Bees

  • Scientists Work to Solve Mystery of Dying Bees

    Scientists Work to Solve Mystery of Dying Bees

    When a swarm of bees landed on a tree in their yard a few years ago, a David Suzuki Foundation staffer and her husband became accidental beekeepers. They called an apiarist relative who came over and helped them capture the bees, build hives and round up equipment. Now they’re enjoying fresh honey and wax and have developed a fascination for the amazing insects. Staff shared that wonderment when she brought honeycombs and tools to the office for an impromptu lesson on beekeeping and bee behaviour.

    Bees are endlessly intriguing, and incredibly useful to us — and not just for honey and wax. If bees disappeared, it would be difficult, if not impossible, to grow much of what we eat. Bees pollinate crops ranging from apples to zucchini. Blueberries and almonds are almost entirely dependent on them. Some experts say they’re responsible for one of every three bites of food we eat. The economic value of pollination services from honeybees alone is estimated at $14 billion in the U.S. and hundreds of millions in Canada.

    Bees are good pollinators because — unlike some birds and other insects that are after nectar alone — they also seek out pollen, which they use along with nectar to feed the hive. In the process, they transfer pollen from the male part of one flower to the female part of another, fertilizing plants so they can develop seed-carrying fruits. Wild bees and domesticated honeybees are both important pollinators.

    In fact, research indicates wild bees may be more important for food-crop pollination than honeybees. That’s in part because a single species, such as honeybees, is vulnerable to mass disease outbreaks. Wild bees also use a wider range of pollination techniques and visit more plants, and so increase chances of cross-pollination, according to an article in the Guardian.

    Sadly, both wild and domesticated bees are in trouble, and that means we could be, too. Causes of phenomena such as colony collapse disorder and other declines in bee populations are not entirely understood, but scientists are getting closer to knowing why bees are dying. Ironically, much of it relates to agricultural practices. Modern methods of growing food are killing one of our biggest helpers in food production.

    Wild bees also face threats from climate change and habitat loss. A recent study published in Science found half the wild bee species in the U.S. were wiped out during the 20th century. That’s been partly attributed to “an increasing mismatch between when plants flowered and when bees were active, a finding consistent with climate change,” according to the Guardian.

    Causes of honeybee deaths are more complicated. Colony collapse disorder has wiped out millions of hives over the past decade, with pesticide use, parasites and poor nutrition eyed as likely culprits. Scientists from the University of Maryland and U.S. Department of Agriculture recently found pollen collected by honeybees was contaminated with a toxic mix of pesticides and fungicides. It appears the toxins make the bees more vulnerable to a parasite called Nosema ceranae, which is believed to cause colony collapse disorder. Pollen samples contained an average of nine different agricultural pesticides and fungicides, and as many as 21 in one case.

    The European Union has imposed a two-year ban on three neonicotinoids, a class of pesticides thought to be responsible for the dramatic declines in Europe’s bee populations, but only for use on “crops attractive to bees”. However, according to the Maryland study’s lead author, Dennis vanEngelsdorp, quoted in the online news outlet Quartz, “It’s a lot more complicated than just one product, which means of course the solution does not lie in just banning one class of product.”

    We need to get a handle on the toxic chemicals we use to grow food. If our practices kill insects and birds that make it possible to grow crops, we’re defeating their purpose and putting ourselves and the rest of nature at risk. As individuals, we can help bees. Stop using pesticides and join the call to ban the worst ones. Plant bee-friendly plants and gardens, make wild bee “houses” and learn more about our fuzzy, buzzing friends. Like our DSF staffer, you could even adopt a hive.

  • The Plight of the Honey Bee

    The Plight of the Honey Bee

    They are a marvel of architectural design and one of nature’s most heroic creatures. The honey bee is an incredible insect with a work ethic beyond anything humans could ever endeavor to mimic. The honey bee works day and night without tiring, each assigned to a specific task.

    There are three groups bees can be categorized into: workers, queens and drones. The worker bees are the only bees people ever see. They gather food from the outside world, build and clean the hive and work to protect it. The drone’s only job is to fertilize the queen and in the fall, when the hive is at its bursting point, they are ejected from their home, sent to live in the wild elements where they eventually die. Honey bees are social creatures that co-operate well within the confines of their narrow existence. They have a job to do and they do it well.

    The worker bees must gather food for the queen and the drones. They do so by collecting pollen and nectar from flowering plants, thus beginning the production of new seeds. This process is called pollination and the honey bee is the biggest contributor. Without pollination, many crops of fruits, vegetables and nuts would die. It is estimated that one third of the world’s food source depends on honey bees to pollinate them.

    In 2006, there was a sudden collapse in honeybee colonies. This decline in bees was so drastic that scientists coined the event “Colony Collapse Disorder” or CCD. Throughout history bee colonies have experienced sudden and unexplainable collapses, but none so wide spread and epic as in recent years. Why is this happening? Many scientists have speculated that there is no one particular cause for the decline in the bee population, rather it is several factors put together. Some believe the pesticides farmers use on crops is to blame. Others feel it the radiation from cell phones causing poor navigation for the bees. Global warming has been cited as a possible reason as well. The real answer is that no one knows why the bees are disappearing, but everyone agrees on one sobering fact – if the problem continues to persist, the world has a very big problem.

    Humans have been exploiting the actions of the honey bee for centuries, capturing and manipulating their surroundings to acquire the much sought after honey and wax the bees so guilelessly create. It was not until the 1600’s that North America was introduced to this ambitious worker. European settlers brought their precious bee hives to ensure a certain quality of life laced with the natural sweetness of honey, and today it is unfathomable to imagine a life without the bees and their effects.

    Fabricated bee colonies are cropping up everywhere in a global effort to repopulate the bees. So far this has met with success, but perhaps this phenomenon should be a warning to all of us. Rather than try to only fix the problem, we might just want to ask what the bees are trying to tell us. If there is a lesson to be learned from their disappearance it would be wise to understand it.

  • Where Are the Bees?

    Where Are the Bees?

    Pollinators

    Did you know that pollination is one of the most important ecological processes on the planet? This basic transfer of pollen from the male parts (anther) of a plant to the female parts (stigma) is vital for the reproduction of about 90 percent of the seed-producing plant species in the world. Pollination creates fertile seeds. Indeed, without pollination, many plants could not reproduce. Food webs and, therefore, entire ecosystems would collapse. We would quickly run out of food, medicine, wood products — almost everything humans and wildlife need to survive . Without it, the world as we know it, would be a different place.

    Scientists are concerned because of the vital role bees play in our food supply. About one-third of the human diet is from plants that require pollination from honeybees, which means everything from apples to zucchini. Bees have been declining over decades from various causes. “Colony collapse disorder” was blamed for large, inexplicable die-offs. The disorder, which causes adult bees to abandon their hives and fly off to die, is likely a combination of many causes, including parasites, viruses, bacteria, poor nutrition and pesticides, experts say.

    The value of these busy pollinators is immeasurable. While bees are probably the most recognized pollinators, it is important that we don’t forget about hummingbirds, butterflies, moths, bats, flies and beetles who are also important pollinators.