Turns out, bee labor is required to produce most avocados and almonds in the U.S. Honeybees pollinate most fruits and vegetables in the country, The Washington Post reported. With native bee populations in sharp decline, there aren't enough of them to complete the job naturally or efficiently, The Post added.
Enter migratory beekeeping. Farmers truck beehives full of European honeybees across the country and into their fields so that the insects can pollinate crops during important fertile periods, The Post reported. Without this practice, farmers would lose about one-third of their crops, including broccoli, blueberries, cherries, apples, melons and lettuce, according to The Post.
The practice is so widespread that Tracy Reiman, a representative for PETA, said, "Average shoppers can't avoid produce that involves migratory beekeeping, any more than they can avoid driving on asphalt," Vegan Life reported.
In 2013, Scientific American estimated that California's booming almond industry used 31 to 80 billion migrant honeybees a year in order to achieve maximum pollination during almond trees' two-week bloom. California produces up to 80 percent of all the world's almonds, Scientific American noted, and could not achieve such scale without migratory beekeeping.
Migratory beekeeping involves trucking millions of bees across the U.S. to pollinate different crops, including avocados and almonds. Timothy Paule II / Pexels / CC0
According to From the Grapevine, American avocados also fully depend on bees' pollination to produce fruit, so farmers have turned to migratory beekeeping as well to fill the void left by wild populations.
U.S. farmers have become reliant upon the practice, but migratory beekeeping has been called exploitative and harmful to bees. CNN reported that commercial beekeeping may injure or kill bees and that transporting them to pollinate crops appears to negatively affect their health and lifespan. Because the honeybees are forced to gather pollen and nectar from a single, monoculture crop — the one they've been brought in to pollinate — they are deprived of their normal diet, which is more diverse and nourishing as it's comprised of a variety of pollens and nectars, Scientific American reported.
Scientific American added how getting shuttled from crop to crop and field to field across the country boomerangs the bees between feast and famine, especially once the blooms they were brought in to fertilize end.
Plus, the artificial mass influx of bees guarantees spreading viruses, mites and fungi between the insects as they collide in midair and crawl over each other in their hives, Scientific American reported. According to CNN, some researchers argue that this explains why so many bees die each winter, and even why entire hives suddenly die off in a phenomenon called colony collapse disorder.
Adding pesticides to the picture, bees don't stand a chance. Many countries still use neonicotinoid pesticides (neonics), which are believed to kill bees. In Jan. 2021, the U.K. faced backlash after approving the emergency use of the toxin on sugar beets, despite pledging not to increase its usage in the wake of Brexit. Although restricted, this family of pesticides is still the most widely used in the U.S., and scientists warn that neonics' continued prevalence could be catastrophic for food supplies, honeybee populations and mass die-offs of native species. Neonics are a primary cause behind the massive honeybee and native bee losses each year, researchers and environmentalists argue.
In Columbia, mass bee deaths are being blamed directly on avocado farms, Phys.org reported. Avocado exports from Columbia skyrocketed from 1.7 tons in 2014 to 44.5 tons in 2019, and in 2021, Colombia became Europe's largest avocado supplier, Phys.org added. This boom has resulted in the increased use of neonic insecticide fipronil. Banned in Europe and restricted in the U.S. and China, fipronil is still used in Colombia to grow avocados and citrus for export. This has been bad for neighboring bees, which become contaminated as they buzz through pesticide-treated plantations looking for food.
"They bring this poison to the hive and kill everyone else," Abdon Salazar, a Columbian beekeeper, lamented to Phys.org after losing 800 hives and 80 million bees in the last two years.
Avocado and almond crops depend on bees for proper pollination. FRANK MERIÑO / Pexels / CC0
Salazar and other Columbian beekeepers described "scooping up piles of dead bees" year after year since the avocado and citrus booms began, according to Phys.org. Many have opted to salvage what partial colonies survive and move away from agricultural areas.
The future of pollinators and the crops they help create is uncertain. According to the United Nations, nearly half of insect pollinators, particularly bees and butterflies, risk global extinction, Phys.org reported. Their decline already has cascading consequences for the economy and beyond. Roughly 1.4 billion jobs and three-quarters of all crops around the world depend on bees and other pollinators for free fertilization services worth billions of dollars, Phys.org noted. Losing wild and native bees could trigger food security issues.
Salazar, the beekeeper, warned Phys.org, "The bee is a bioindicator. If bees are dying, what other insects beneficial to the environment... are dying?"
Twenty years ago Pacific salmon were found to have disappeared from 40% of their native rivers and streams across Oregon, Washington, Idaho and California. In places where they remain, like the Columbia River system, the number of wild fish returning to streams is estimated to have plunged by as much as 98%. Today 28 populations of West Coast salmon and steelhead are listed as threatened or endangered under the Endangered Species Act.
New research is helping to put the problem — and solutions — into focus. But in some cases, policy to implement changes still lags.
1. Trouble in Washington
With 14 salmon and steelhead species listed as endangered in Washington, a new report by the state declared that "too many salmon remain on the brink of extinction. And time is running out." Four key factors, the researchers say, have been attributed to their historical decline: habitat, harvest, hydropower and hatcheries.
2. Upstream Changes
Along with historic threats, there's another new factor making salmon recovery challenging for Washington and other West Coast states: climate change. Increasing temperatures are causing snowpack declines, resulting in warmer streams that can stress or kill salmon. Additionally, more precipitation falling as rain instead of snow causes rivers to run faster earlier in the season, which can wash away salmon nests and sweep young salmon out of their calm-water habitat before they're ready — reducing their chances of survival.
3. Ocean Woes
It's not just freshwater habitat for salmon that's changing. A recent study in the journal Communications Biology looked at how eight populations of wild spring-summer Chinook from the Snake River Basin fared during the ocean phase of their lives. And it's not good. If ocean warming continues, by the 2060s mortality for Chinook could be as high as 90%.
4. Ripple Effect
Pacific salmon are an integral cultural resource for Pacific Northwest tribes and provide thousands of regional jobs. But the fish don't just feed people. They also nourish freshwater and marine ecosystems, along with more than 100 species.
And for one animal in particular, the critically endangered Southern Resident killer whale (Orcinus orca), the decline of Chinook is an existential threat. It's been long known that Southern Residents feed primarily on Chinook — the largest Pacific salmon species — during the summer. But a new study published in the journal Plos One found that Chinook were also important year-round.
Southern Resident killer whales. NOAA
5. Implementing Solutions
In an effort to help the recovery of Southern Residents and help boost salmon populations in the region, conservation groups have increased their calls to remove four dams on the Lower Snake River, a major tributary of the Columbia River in Washington.
While the science supports dam removal to save salmon, putting that into action has run into a wall of political opposition — mostly from conservatives. However, a recent plan proposed by Idaho Rep. Mike Simpson to breach the Snake River dams was a rare showing of Republican support, which could signal more bipartisan efforts ahead.
Other dam removals — both large and small — have proved beneficial for salmon in Washington and other states. In California a groundbreaking project to allow rivers to flood fallow farm fields in winter has helped provide both food and rearing habitat for salmon — and has helped prove that water managers don't have to choose between fish and farmers.
Tara Lohan is deputy editor of The Revelator and has worked for more than a decade as a digital editor and environmental journalist focused on the intersections of energy, water and climate. Her work has been published by The Nation, American Prospect, High Country News, Grist, Pacific Standard and others. She is the editor of two books on the global water crisis.
Reposted with permission from The Revelator.
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Fortunately, there is still time to change course. A determined and coordinated effort by local, state and federal governments — led by the Biden administration — could dramatically increase the number of saltwater wetlands that survive and go a long way to maintaining their ecological and societal benefits into the future.
Saltwater Wetlands: To Know Them Is to Love Them
The most recent estimate of the extent of saltwater wetlands along the American coast, published in 2009, found some 6.4 million acres with about half occurring along the Gulf of Mexico. This is a mere remnant of their historic extent and a decline of some 95,000 acres from the previous assessment in 2004, largely in the Gulf of Mexico. Ominously, the rate of loss increased by 35% from the prior five-year reporting period.
The remaining saltwater wetlands still provide an impressive array of ecological services and benefits to society. Often termed "the most productive ecosystems on Earth" they are nursery grounds for fisheries and provide habitat for birds, mammals and other wildlife.
Wetlands also protect communities from storm surges and flooding. Along the Atlantic and Gulf coasts the protective value of wetlands is estimated to be about $1.8 million per square kilometer annually. On top of all that, saltwater wetlands help fight global warming by storing carbon at a rate that is about two to four times greater than that observed in mature tropical forests.
The Saltwater Wetland Extinction Scenario
Rising sea level and steady coastal urbanization pose an existential threat to saltwater wetlands.
The National Oceanic and Atmospheric Administration predicts that sea level along much of the American coast is likely to rise by 2 to 4 feet, and may rise by as much as 8 feet, by 2100. And seas will continue to rise in the centuries to come, with an "intermediate" estimate of more than 9 feet by 2200.
NOAA's National Geodetic Survey installs a device to provide data to model the fate of a Chesapeake Bay marsh in the face of rising water levels. National Ocean Service Image Gallery
The rising seas will eventually drown all the saltwater wetlands that now exist, converting them to open water. Some wetlands will survive in place for a time if seas rise slowly enough. But the rate of sea-level rise is accelerating rapidly and other factors, such as land subsidence, will shift the balance in favor of rising seas in the years ahead.
For most saltwater wetlands, survival will require landward migration. This is possible where geography does not present obstacles, such as steep slopes, and where human development has not already staked a claim. There is no national assessment of the feasibility of saltwater wetland migration, but several studies of smaller geographic areas present a bleak picture.
On the Pacific coast, some 83% of wetlands are projected to become open water by 2110 and "migration of most wetlands was constrained by coastal development or steep topography," according to a 2018 study in Science Advances. Along the Gulf of Mexico, estimated conversion of wetlands to open water varies for each state, with rates from 24 to 37% by 2060.
The outlook for saltwater wetland survival darkens further when one considers new coastal development occupying dry land that might otherwise become a new wetland. Population in the 100-year coastal floodplain is expected to almost double by 2060, significantly expanding the coastal development footprint.
And the rising sea levels that drive wetlands inland will also prompt people to defend the land they are on, often with seawalls, bulkheads or levees. Some 14% of the coast is already armored by this infrastructure and, if the current rate of armoring continues, that percentage is expected to double by 2100.
Finally, wetlands that are able to migrate will need years to provide the same degree of ecosystem services they did originally. A study of over 600 restored wetlands worldwide found that biological structure and biogeochemical functioning "remained on average 26% and 23% lower, respectively, than in reference sites" even a century after restoration, which means that even the wetlands to do survive won't provide the same benefits.
Envisioning a Strategy for Saving Saltwater Wetlands
What can be done to help saltwater wetlands survive the one-two punch of a changing climate and coastal development?
A critical step is to admit we have a problem and agree that we need a national response strategy. A national strategy should define a goal for saltwater wetlands protection (e.g., a net increase in acreage nationally and by state) and charge a federal agency (e.g., NOAA) with leading the effort.
The heart of a new strategy needs to be carefully planned for landward migration of saltwater wetlands and deployment of new authority and resources toward that end. This key objective is widely supported in the academic literature and the work to address it must engage local, state and federal agencies.
Since it's been more than a decade since the last published assessment of the United States' coastal wetlands, existing saltwater wetlands need to be mapped anew. Then their varying rates of natural change should be assessed and the feasibility of landward migration evaluated. Evaluation of migration should include obstacles, such as natural features, and both existing and likely future development. Coastal places that are not wetlands today but are well suited to become wetlands as sea level rises, should be identified. All this information should be used to develop place-specific plans to protect and preserve the land that wetlands will need to migrate inland on a priority basis.
While that work is going on, we'll also need to focus on dampening the rate of population growth right along the coast. This will be essential to leave space for successful landward migration of saltwater wetlands. State and local government have diverse tools, including land-use plans and regulations, to apply to this challenge, but the federal government needs to help. For example, FEMA should stop issuing federal flood insurance for new development in coastal floodplains.
Another critical tool is expanded authority to restrict new coastal armoring projects that would prevent landward migration of saltwater wetlands. Eight states have implemented total or partial bans on coastal armoring, but efficacy and enforcement vary. All states should adopt and enforce such bans. These projects also require permits from the Army Corps of Engineers and existing requirements should be revised to give stronger preference for "living shorelines" that replace traditional structures with designs using biological and natural materials.
Creating a "living shoreline" in the Delaware estuary. Danielle Kreeger CC BY-NC-ND 2.0
In some places, regulation will not be enough and acquisition of real estate will be necessary. Some states have land-acquisition programs that consider sea-level rise. For example, Maryland identifies "coastal lands with the highest potential to aid in adaptation if sea level rises a meter per century" and uses the assessment in making conservation investments. People in the San Francisco Bay area voted for Measure AA to provide local funds for wetlands protection in the face of sea-level rise. These programs and some others are a foothold but more states need to follow this example.
Federal agencies need to support these state initiatives by expanding modest existing federal programs that protect coastal wetlands to include purchasing land for prospective wetlands and removing buildings and other structures where needed.
Saving saltwater wetlands will require that Congress, federal agencies, states and local governments collaborate to agree on the strategy and then approve the new tools and funding needed to carry it forward. This will require years of effort, but the start of a new Congress and a new administration is an auspicious time to begin this important work.
Jeff Peterson is a retired senior policy advisor at the Environmental Protection Agency and the author of A New Coast: Strategies for Responding to Devastating Storms and Rising Seas. https://islandpress.org/books/new-coast
Reposted with permission from The Revelator.
"The Global Decline of Insects in the Anthropocene Special Feature," which includes an introduction and 11 papers, was published Monday in Proceedings of the National Academies of Sciences alongside a related news article. "Nature is under siege," the scientists warn. "Insects are suffering from 'death by a thousand cuts.'"
The set of studies—resulting from a symposium in St. Louis—comes as the body of research on insect declines has grown in recent years, leading to major assessments published in February 2019 and April 2020, as well as a roadmap released last January by 73 scientists detailing how to battle the "bugpocalypse."
As the new package and below graphic explain, human stressors that experts have tied to bug declines include agricultural practices; chemical, light, and sound pollution; invasive species; land-use changes; nitrification; pesticides; and urbanization.
Emphasizing the consequences of such declines, University of Connecticut entomologist David Wagner, the package's lead author, told the Associated Press that insects "are absolutely the fabric by which Mother Nature and the tree of life are built."
According to Wagner, many insect populations are dropping about 1-2% per year. As he put it to The Guardian: "You're losing 10-20% of your animals over a single decade and that is just absolutely frightening. You're tearing apart the tapestry of life."
While most causes of declines are well known, "there's one really big unknown and that's climate change—that's the one that really scares me the most," he said, warning the crisis could be causing "extinctions at a rate that we haven't seen before."
Insect populations suffering death by 1,000 cuts, say scientists - ‘Frightening’ global decline is ‘tearing apar… https://t.co/iyKLoyUz4i— Damian Carrington (@Damian Carrington)1610396907.0
Roel van Klink of the German Center for Integrative Biodiversity Research told The Guardian that "the most important thing we learn [from these new studies] is the complexity behind insect declines. No single quick fix is going to solve this problem."
"There are certainly places where insect abundances are dropping strongly, but not everywhere," he said. "This is a reason for hope, because it can help us understand what we can do to help them. They can bounce back really fast when the conditions improve."
The package's introduction points out that while much recent research and resulting news coverage focused on drops in bug populations, "four papers in this special issue note instances of insect lineages that have not changed or have increased in abundance."
"Many moth species in Great Britain have demonstrably expanded in range or population size," the paper notes. "Numerous temperate insects, presumably limited by winter temperatures, have increased in abundance and range, in response to warmer global temperatures."
Pollinators such as the western honey bee in North America, "may well thrive due to their associations with humans," the introduction adds. "Increasing abundances of freshwater insects have been attributed to clean water legislation, in both Europe and North America."
As @dharnanoor points out in this article, too many bugs (thanks to #climatechange) can be a problem too--natural s… https://t.co/5ZNDwWhX80— erin sikorsky (@erin sikorsky)1610452988.0
In addition to the introduction, titled "Insect decline in the Anthropocene: Death by a thousand cuts," the package includes seven perspectives:
- "Agricultural intensification and climate change are rapidly decreasing insect biodiversity"
- "To us insectometers, it is clear that insect decline in our Costa Rican tropics is real, so let's be kind to the survivors"
- "Insects and recent climate change"
- "The decline of butterflies in Europe: Problems, significance, and possible solutions"
- "A window to the world of global insect declines: Moth biodiversity trends are complex and heterogeneous"
- "Deep learning and computer vision will transform entomology"
- "No buzz for bees: Media coverage of pollinator decline"
The body of work also includes three separate research articles:
- "Arthropods are not declining but are responsive to disturbance in the Luquillo Experimental Forest, Puerto Rico"
- "Insect biomass decline scaled to species diversity: General patterns derived from a hoverfly community"
- "Nonlinear trends in abundance and diversity and complex responses to climate change in Arctic arthropods"
The final piece is an opinion laying out "eight simple actions that individuals can take to save insects from global declines," which features five actions to create "more and better insect-friendly habitats, the loss of which is likely a leading cause of insect declines," and three that aim to adjust public attitudes.
As Dharna Noor wrote in her coverage for Earther: "I do not like bugs. Creepy, many-legged things make my skin crawl. But as unpleasant as they are, insects are absolutely crucial for our world's ecosystems to function, and sadly, new research shows that the creatures populations are on the verge of collapse."
To boost awareness and appreciation of insects, the scientists suggest countering negative perceptions, pushing for conservation efforts, and getting involved in local political advocacy. On the habitat improvement front, they recommend converting lawns into diverse natural habitats, growing native plants, cutting pesticide use, limiting light pollution, and lessening soap runoff from washing vehicles and building exteriors as well as the use of driveway sealants and de-icing salts.
"Avoiding some behaviors or adopting others will contribute both directly and indirectly to insect conservation," the scientists note. "Further, taking actions that address issues such as climate change can synergistically promote insect diversity. Climate change is increasingly recognized as a primary factor driving local and regional plant and animal extinctions."
Reposted with permission from Common Dreams.
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