Conservation // 5 min Read

The Plight of Pollinators

Written by Palmetto Bluff

May 24, 2021

If I asked you to think of native pollinators, you would most likely imagine butterflies lazily meandering from flower to flower, catching the breeze on their gently flapping wings. Or bees busily flitting in your garden, picking up pollen grains as they search for nectar.

But would you have reflected on the clumsy bumbling of beetles or the whiny drone of flies? What about bats screeching silently in the Southwest desert night while searching for cactus flowers or the deep hum of a hummingbird’s wings as it visits coral honeysuckle? I bet these animals were not the first to come to mind, but they share a common role: pollinator.

When we first learn about pollinators, we hear about a single species—the honeybee—as the epitome of pollination. What is often omitted is that honeybees are not native to this continent; they were transported to North America by Europeans in the early 1600s. Our native bees, in contrast, are speciose, with around 4,000 species in the United States. Their hues vary from the typical yellow and black of bumblebees to the iridescent blue, green, or turquoise of sweat bees. And bees are only a small part of the pollinator puzzle!

Bumblebee
Bumblebee
Sweat Bee
Sweat Bee

An evolutionary appeal of pollinators is their facilitation of plant reproduction. Specific groups of pollinators are attracted to specific groups of plants. You can actually look at characteristics of a flower—such as size, smell, and color—and make educated guesses about what group of animals pollinates it. Beetles, for example, were some of the first pollinators to evolve and were responsible for fertilizing the earliest flowering plants. Beetles are clumsy, have poor vision, and are inept at manipulating delicate flower parts. Flowers that attract beetles, including those of Southern magnolias, are often large and bowl-shaped, making it easier for beetles to find and maneuver within the flower. Flies are attracted to putrid, fetid odors, and many flowers that attract flies, such as the blooms of pawpaw, mimic the smell of rotting meat. Hummingbirds have excellent color vision and are particularly adept at seeing red. Most plants that attract hummingbirds have blooms that are varying shades of this color.

These phenomena are the result of a coevolutionary dance of seduction, where plants produce flowers that exploit specific traits of pollinators. The end result? The plant ensures it continues to lure the pollinator and the pollinator gets a reward. That does not mean this relationship is without its inherent level of trickery. Plant and pollinator rely on each other while simultaneously trying to “outsmart” their coconspirator. The plant wants to give the pollinator the minimum amount of nectar possible in order to ensure fertilization, and the pollinator wants to get the most nectar and pollen possible during every foraging bout, causing evolutionary tension in the relationship between these two actors.

Blazing Star
Blazing Star

Thankfully, this system of manipulation is effective. Our pollinators are responsible for fertilizing 80 percent of the flowering plants in the United States, meaning that the survival of flowering plants is closely tied to the survival of pollinators. And it is not just plants that find pollinators creatures of value. WE cannot survive without them either. As mechanisms of pollen transport, pollinators provide us with an essential economic skill. (Yes, pollinators are essential workers). Bees and butterflies—as well as beetles, wasps, flies, birds, and bats—are responsible for one-third of the food we eat. According to the United States Department of Agriculture, pollinators provide a financial benefit to American farmers at a value of $10 billion each year through their simple, and simultaneously complicated, service of pollination.

Unfortunately, pollinators worldwide are experiencing a multifaceted attack on their survival. A 2016 study in Germany found that aerial insect populations plummeted by 76 percent over the course of roughly three decades. Monarch butterfly populations dropped more than 84 percent between 1996 and today. There is no single cause for these declines. Extreme heat events caused by climate change stress plants, decreasing the amount of nectar they can produce. Conversion of natural ecosystems to monoculture crops and grass lawns have eliminated habitat. Pesticides may be used to target specific insect pests but can result in pollinator bycatch, causing a mass mortality of untargeted species. The intertwining negative effects
of climate change, habitat loss, and pesticide use are wreaking havoc on pollinator populations.

Pollinators desperately need our help. Fortunately, there are many small steps we can take to mitigate these challenges. `

How You Can Help

There are a handful of actions you can take to promote pollinator survival.

Monarch butterflies are well known for their yearly, multigenerational migration from Mexico to Canada and back. You can help researchers understand monarch migratory behavior by documenting your monarch sightings through a citizen science initiative. Learn more at journeynorth.org/monarchs.

Donate to organizations that focus on invertebrate conservation, such as the Xerces Society for Invertebrate Conservation (xerces.org) and Pollinator Partnership (pollinator.org).

Avoid using pesticides. If needed, there are several organic-certified options. Read more at xerces.org/publications/guidelines/organic-pesticides.

Create a pollinator garden. Choose native plants that bloom successively from spring to fall to ensure there is food for pollinators throughout seasons when they are most active. Larvae may have specific plant requirements that adults do not share, so make sure to include host plants for larvae. Learn more at fs.fed.us/wildflowers/pollinators. Find native plant nurseries near you at xerces.org/pollinator-resource-center or check out Spring Island Nursery at springislandtrust.org.

Certify your garden as a pollinator-friendly habitat. Learn more at nwf.org/garden-for-wildlife/certify or xerces.org/bring-back-the-pollinators.

Be an advocate. Spread the word and educate others!

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