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When wolves move in, they push smaller carnivores closer to human development – with deadly consequences

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When wolves move in, they push smaller carnivores closer to human development – with deadly consequences

Smaller predators steer clear of wolves, but that brings them closer to people – and the dangers humans pose.
Star Tribune via Getty Images

Calum Cunningham, University of Washington and Laura Prugh, University of Washington

Large carnivores like wolves are returning to areas they used to occupy, leading scientists to wonder whether they may once again fulfill important ecological roles. But wolves’ return to the landscape can affect other nearby animals in complex ways.

Our research, published in the journal Science, shows that an increase in predators can lead smaller carnivores, like coyotes and bobcats, to seek refuge near people – but humans then kill them at even higher rates than large predators do.

We are wildlife ecologists who study how predators shape ecosystems. Along with colleagues from the Washington Predator Prey Project and the Spokane Tribe of Indians, we are seeking to understand how recoveries of wolves and other predators are altering ecosystems in Washington state.

Predators structure ecosystems

Large carnivores play crucial roles in their ecosystems. As they prey on or push other animals to avoid the areas they frequently use, predators shape the way interconnected food webs work.

The iconic reintroduction of wolves to Yellowstone National Park in 1995 had cascading effects down the food chain. The elk population shrank, and those that remained avoided areas with wolves, termed a “landscape of fear.” These changes in elk abundance and behavior allowed aspen and willow trees to recover after decades of overconsumption by elk.

Wolves also kill smaller predators like coyotes, providing respite for the animals that coyotes eat. Research from Yellowstone suggests that landscapes with wolves may have more diverse vegetation and more small animals like songbirds than those without wolves.

But because humans are often intolerant of predators and kill them at high rates, large predators tend to avoid areas that are frequented by people. In national parks where humans rarely kill wildlife, some prey species use areas popular with people, such as hiking trails and campgrounds, as refuges from predators. This is known as the “human shield” effect.

An elk sits on the grass in front of a building at Yellowstone National Park. In the foreground, a sign reads 'danger do not approach elk'.
Elk – like these at Mammoth Hot Springs in Yellowstone National Park – and other prey species may use human-dominated landscapes as a way to avoid larger predators like wolves.
Dennis Macdonald/Photographer’s Choice RF via Getty Images

Predators in human-dominated landscapes

Three decades after the Yellowstone release, wolves have continued to recolonize vast areas of the American West. In 2008, after an 80-year absence, wolves – some of which descended from the original Yellowstone population – began to naturally recolonize Washington. These wolves moved in from neighboring populations in Idaho and British Columbia.

But unlike Yellowstone, many of the landscapes wolves are now returning to are heavily modified by humans. This level of development raises the question: Do predators have the same influence on ecosystems where humans, rather than wolves, are the top dogs?

YouTube video
The Washington Predator Prey Project examines the ecological effects of wolf recovery in Washington state. Video produced by Benjamin Drummond and Sarah Joy Steele.

To answer this question, we used GPS collars to track the movements of 22 wolves, 60 cougars, 35 coyotes and 37 bobcats as they navigated the landscapes of northern Washington, comprising a patchwork of public forests and land used for agriculture, ranching, logging and residential development.

Using hundreds of thousands of GPS locations, we constructed statistical models to reveal how coyotes and bobcats navigated a landscape where humans, wolves and cougars all posed concurrent threats. The GPS collars also notified us when coyotes and bobcats died, allowing us to investigate what caused their deaths.

YouTube video
How researchers from the Washington Department of Fish and Wildlife attach GPS collars to wolves. Video produced by Benjamin Drummond and Sarah Joy Steele.

When ‘human shields’ are lethal

We found that wolves and cougars avoided areas heavily influenced by humans, such as busy roads and residential areas. Coyotes strongly avoided wolves, which brought them closer to humans. In parts of the landscape with large predators around, both coyotes and bobcats moved to areas with approximately double the human influence, potentially using humans as shields.

When coyotes and bobcats sought refuge near people, they instead encountered a more lethal source of danger. We found that humans were the greatest cause of mortality, killing these smaller predators at more than three times the rate that large carnivores did.

Our findings fit with earlier research that characterizes humans as “super predators.” People use modern technologies such as firearms and steel traps to kill small predators at far higher rates than other predators kill small predators. Unlike other predators, humans often target animals in prime condition.

But if people are so dangerous, why would coyotes and bobcats seek refuge near them? Other research shows that smaller predators do indeed fear humans, so they likely still recognize that humans are dangerous. Instead, we think they might not correctly interpret the threats posed by modern humans.

Most bobcats and coyotes in our study were either shot or trapped. These technologies allow people to kill animals either when absent or from large distances, possibly making it difficult for animals to accurately gauge risk.

Additionally, lenient hunting regulations for these small predators puts them at high risk. Under a Washington hunting license, for example, coyotes and bobcats can be legally hunted and trapped without limits – all year for coyotes and six months for bobcats.

YouTube video
The process of capturing and GPS-collaring a bobcat. After being sedated, it is common for animals to initially wake up groggy, but they soon return to normal.

Conservation in human-dominated landscapes

While our findings may at first seem like bad news for conserving smaller predators, these results have important implications for maintaining balanced ecosystems, where no species is too abundant. Unbalanced ecosystems, like ones with too many small predators, can face devastating effects. In Australia, for example, overabundant cats and foxes have contributed to the extinctions of about 30 small mammal species.

Our results show that larger predators can constrain the behavior of smaller predators in human-dominated landscapes, which may help to prevent overabundance.

Rewilding ecosystems by using large predators to reestablish missing ecological processes may provide a way to maintain balanced ecosystems. As wolf populations continue to recover in large parts of the U.S. and Europe, our findings suggest that they are reestablishing important ecological processes by recreating these landscapes of fear that have long been missing.The Conversation

Calum Cunningham, Postdoctoral Researcher, University of Washington and Laura Prugh, Associate Professor of Quantitative Wildlife Sciences, University of Washington

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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The leadership hack that drives success: Being trustworthy

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theconversation.com – Yufei Ren, Associate Professor of Economics, Labovitz School of Business and Economics, University of Minnesota Duluth – 2025-02-20 07:52:00

The leadership hack that drives success: Being trustworthy

Trustworthy managers get better performance reviews, recent research shows.
Andrey Popov/Getty Images

Yufei Ren, University of Minnesota Duluth

National Leadership Day, which takes place every Feb. 20, offers a chance to reflect on what truly defines leadership – not just strategy or decision-making, but the ability to build trust. In an era of rapid change, when teams look to leaders for stability and direction, trust is the invisible currency that fuels organizational success.

As an economist, I know there’s a lot of research proving this point. I’ve conducted some myself, including work on how trust is essential for leaders in cross-cultural business environments. In an expansive study of China’s fast-paced restaurant industry, my colleagues and I found that leaders who cultivate trust can significantly reduce employee churn and improve organizational performance.

While my study focuses on one sector, its lessons extend far beyond that. It offers insights for leaders in any field, from corporate executives to community organizers.

Understanding the impact

In China, as in the U.S., the restaurant industry is known for high turnover rates and cutthroat competition. But our study found that managers who demonstrate trustworthiness can keep employees from fleeing to rivals, creating a more stable and committed workforce.

First, we conducted a field experiment in which we asked managers at around 115 restaurants how much money they were willing to send to employees in an investment game – an indicator of trust. We then found that for every 10% increase in managers’ trust-driven actions, employee turnover fell by 3.7 percentage points. That’s a testament to the power of trust in the workplace.

When managers are trustworthy, workers tend to be more loyal, engaged in their job and productive. Employees who perceive their managers as trustworthy report higher job satisfaction and are more willing to exert extra effort, which directly benefits the organization.

We also found that when employees trust one another, managers get better performance evaluations. That makes sense, since trust fosters improved cooperation and innovation across the board.

Practical steps to foster trust

Fortunately for managers – and workers – there’s a lot of research into how to be a more trustworthy leader. Here are a few insights:

Empower your team. Let employees take ownership of their responsibilities and make decisions within their roles. This not only boosts their engagement but also aligns their objectives with the broader goals of the organization. Empowerment is a key strategy in building trust.

Be fair and transparent. Managers should strive to be consistent in their actions, address concerns promptly and distribute rewards equitably. Those practices can create a psychologically safe and supportive work environment.

Promote collaboration. Encourage an atmosphere in which employees can openly share ideas and support one another. Activities that promote team cohesion and open communication can significantly enhance trust within the team.

Measure and manage trust. Implementing regular surveys or feedback sessions can help assess and manage trust levels within an organization. Consider integrating trust metrics into performance evaluations to emphasize their importance.

Some takeaways for National Leadership Day

Whether helming a business, a nonprofit or a local community initiative, leaders should recognize that being trustworthy isn’t just a “soft skill.” It’s a measurable force that drives success. By making trust-building a deliberate goal, leaders can create stronger, more resilient teams.

So this National Leadership Day is a good time to reflect: How do you build trust in your leadership? And how can you foster a culture of trustworthiness?

Managers should commit to leading with trust, acting with integrity and fostering workplaces where people feel valued and empowered. The impact will speak for itself.The Conversation

Yufei Ren, Associate Professor of Economics, Labovitz School of Business and Economics, University of Minnesota Duluth

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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Trans people affirmed their gender without medical help in medieval Europe − history shows how identity transcends medicine and law

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theconversation.com – Sarah Barringer, Ph.D. Candidate in English, University of Iowa – 2025-02-18 07:36:00

Trans people affirmed their gender without medical help in medieval Europe − history shows how identity transcends medicine and law

The Lady and the Unicorn: Sight.
Unknown/Musée de Cluny, Paris via Didier Descouens/Wikimedia Commons

Sarah Barringer, University of Iowa

Restrictions on medical care for transgender youth assume that without the ability to medically transition, trans people will vanish.

As of 2024, 26 U.S. states have banned gender-affirming care for young people. Less than a month into office, President Donald Trump issued numerous executive orders targeting transgender people, including a mandate to use “sex” instead of “gender” on passports, visas and global entry cards, as well as a ban on gender-affirming care for young people. These actions foreground the upcoming Supreme Court case of U.S. vs. Skrmetti which promises to shape the future of gender-affirming health care in the U.S., including restrictions or bans.

History, however, shows that withholding health care does not make transgender people go away. Scholarship of medieval literature and historical records reveals how transgender people transitioned even without a robust medical system – instead, they changed their clothes, name and social position.

Surgery in medieval times

Surgery was not a widespread practice in the medieval period. While it gained some traction in the 1300s, surgery was limited to southern France and northern Italy. Even there, surgery was dangerous and the risk of infection high.

Cutting off fleshy bits is an old practice and, potential dangers aside, removing a penis or breasts wasn’t impossible. But amputating functioning limbs was nearly always a form of punishment. Medieval people, including surgeons and patients, likely would not have had positive views of surgery that involved removing working body parts.

Watercolor diagram of various implements resembling scalpels
Illustration from a Latin translation of Albucasis’ Chirurgia, depicting surgical instruments.
Wellcome Collection

Surgeons in the 14th century were increasingly thinking about how to perform surgery on those with both male and female genitalia – people now called intersex. But they thought about this in terms of “correcting” genitalia to make it more apparently male or female – an attitude still present today. Historically, the procedure was probably performed on adults, but today it is usually performed on children. Both then and now, the surgery often disregards the patient’s wishes and is not medically necessary, at times leading to complications later. For patients deemed female, excess flesh could be cut away, and for patients deemed male, the vulva could be cauterized to close it.

There is, however, at least one historical example of a transgender individual receiving surgery. In 1300, near Bern, Switzerland, an unnamed woman was legally separated from her husband because she was unable to have sex with him. Soon after, the woman headed to Bologna, which was the surgery capital of Europe at the time. There, a surgeon cut open the woman’s vulva, revealing a penis and testicles. The account ends, “Back home, he took a wife, did rural work, and had legitimate and sufficient intercourse with his wife.”

The story presents the possibility of medical transition, possibly even a desire for it. But given the limits of surgical techniques and ideologies at the time, these forms of medical transition were unlikely to be common.

Transitioning without medicine

To transition without medicine, medieval transgender people relied on changes they could make themselves. They cut their hair, put on different clothes, changed their names, and found new places in society.

In 1388, a young woman named Catherine in Rottweil, Germany, “put on men’s clothes, declared herself to be a man, and called herself John.” John went on to marry a woman and later developed breasts. This caused some initial consternation – the city council of Rottweil sent John and his wife to court. However, the court did not see breasts as inhibiting John’s masculinity and the couple went home without facing any charges.

In 1395, a transgender woman named Eleanor Rykener appeared before a court in London, England, after she was caught working as a prostitute. The court clerk wrote “that a certain Anna … first taught [her] to practice this detestable vice in the manner of a woman. [She] further said that a certain Elizabeth Bronderer first dressed [her] in women’s clothing” and later she took on work as an embroideress and tapster, a sort of bartender. The account is Rykener’s own, but the court clerk editorialized it, notably adding the phrase “detestable vice” in reference to prostitution.

Medieval manuscript illustration of two people embracing in bed
Detail of lovers in bed, Aldobrandino of Siena, Le Régime du corps, northern France. 13th century.
British Library Catalogue of Illuminated Manuscripts/Sloane MS 2435, f. 9v.

Rykener’s account reveals that there were a number of people interested in helping her transition – people who helped her dress, taught her how to behave, provided her employment and supported her choice of a new name. Community was a more important part of her transition than transforming her body. Based on the record, she apparently did not make an effort to create breasts.

Another account appeared in 1355 in Venice, Italy, concerning Rolandina Ronchaia. While John declared himself male, and Rykener was very active in her transition, Ronchaia’s transition was spurred on by the perceptions of others. She argued that she had always had a “feminine face, voice and gestures,” and was often mistaken for a woman. She also had breasts, “in women’s fashion.” One night, a man came to have sex with her, and Ronchaia, “wishing to connect like a woman, hid [her] own penis and took the man’s penis.” After that, she moved to Venice, where, although she continued to wear men’s clothes, she was still perceived as a woman.

Ronchaia’s account is unique because it emphasizes her body and her desire to change it by hiding her penis. But this was still a matter of what she herself could do to express her gender, rather than a medical transition.

A long transgender history

The accounts of medieval transgender individuals are limited – not only in number but in length. A lot of things did not get written down, and people were not talking about transgender people the way we are now.

Historical accounts of transgender individuals are almost always in court records, which reflect the concerns of the court more clearly than the concerns of its subjects. The court was especially worried about sexual activity between men, which both overemphasizes the importance of sex in medieval transgender people’s lives and often obscures that these accounts are even about transgender people. Eleanor Ryekener’s account frequently misgenders her and refers to her as “John.”

But it’s clear that transgender people existed in the medieval period, even when medical care was unavailable to them.

Yellowed page of manuscript with small, inked script
A court document from the interrogation of John Rykener.
Internet Medieval Source Book/Wikimedia Commons

It is also the case that many of these individuals – Rykener is a likely exception – were probably intersex, and their experience would be different from those who were not. Intersex people were legally recognized and allowed some leeway if they chose to transition as an adult. This is starkly apparent in an account from Lille, France, in 1458, where a transgender woman was accused of sodomy and burned at the stake. She claimed “to have both sexes,” but the account says this was not the case. While being demonstrably intersex may not have saved her, that she claimed she was is telling.

Gender transition has a long history, going even further back than the medieval period. Then as now, the local community played a vital role in aiding an individual’s transition. Unlike the medieval period, most modern societies have far greater access to medical care. Despite current restrictions, transgender people have far more options for transition than they once did.

Medieval modes of transitioning are not a solution to current denials of medical care. But medieval transgender lives do illuminate that transgender people will not vanish even when the legal and medical systems strive to erase them.The Conversation

Sarah Barringer, Ph.D. Candidate in English, University of Iowa

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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Why community pharmacies are closing – and what to do if your neighborhood location shutters

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theconversation.com – Lucas A. Berenbrok, Associate Professor of Pharmacy and Therapeutics, University of Pittsburgh – 2025-02-18 07:36:00

Why community pharmacies are closing – and what to do if your neighborhood location shutters

Lucas A. Berenbrok, University of Pittsburgh; Michael Murphy, The Ohio State University, and Sophia Herbert, University of Pittsburgh

Neighborhood pharmacies are rapidly shuttering.

Not long ago, Walgreens, one of the nation’s biggest pharmacy chains, announced plans to close 1,200 stores over the next three years. That’s part of a larger trend that has seen nearly 7,000 pharmacy locations close since 2019, with more expected in the coming years.

Many community pharmacies are struggling to stay open due to an overburdened workforce, shrinking reimbursement rates for prescription drugs and limited opportunities to bill insurers for services beyond dispensing medications.

As trained pharmacists who advocate for and take care of patients in community settings, we’ve witnessed this decline firsthand. The loss of local pharmacies threatens individual and community access to medications, pharmacist expertise and essential public health resources.

The changing role of pharmacies

Community pharmacies – which include independently owned, corporate-chain and other retail pharmacies in neighborhood settings – have changed a lot over the past decades. What once were simple medication pickup points have evolved into hubs for health and wellness. Beyond dispensing prescriptions, pharmacists today provide vaccinations, testing and treatment for infectious diseases, access to hormonal birth control and other clinical services they’re empowered to provide by federal and state laws.

Given their importance, then, why have so many community pharmacies been closing?

There are many reasons, but the most important is reduced reimbursement for prescription drugs. Most community pharmacies operate under a business model centered on dispensing medications that relies on insurer reimbursements and cash payments from patients. Minor revenue comes from front-end sales of over-the-counter products and other items.

However, pharmacy benefit managers – companies that manage prescription drug benefits for insurers and employers – have aggressively cut reimbursement rates in an effort to lower drug costs in recent years. As a result, pharmacists often have to dispense prescription drugs at very low margins or even at a loss. In some cases, pharmacists are forced to transfer prescriptions to other pharmacies willing to absorb the financial hit. Other times, pharmacists choose not to stock these drugs at all.

And it’s not just mom-and-pop operations feeling the pinch. Over the past four years, the three largest pharmacy chains have announced plans to close hundreds of stores nationwide. CVS kicked off the trend in 2021 by announcing plans to close 900 pharmacy locations. In late 2023, Rite Aid said that thousands of its stores would be at risk for closure due to bankruptcy. And late in 2024, Walgreens announced its plans to close 1,200 stores over the next three years.

To make matters worse, pharmacists, like many other health care providers, have been facing burnout due to high stress and the lasting effects of the COVID-19 pandemic. At the same time, pharmacy school enrollment has declined, worsening the workforce shortage just as an impending shortfall of primary care physicians looms.

Why pharmacy accessibility matters

The increasing closure of community pharmacies has far-reaching consequences for millions of Americans. That’s because neighborhood pharmacies are one of the most accessible health care locations in the country, with an estimated 90% of Americans living within 5 miles of one.

However, research shows that “pharmacy deserts” are more common in marginalized communities, where people need accessible health care the most. For example, people who live in pharmacy deserts are also more likely to have a disability that makes it hard or impossible to walk. Many of these areas are also classified as medically underserved areas or health professional shortage areas. As pharmacy closures accelerate, America’s health disparities could get even worse.

So if your neighborhood pharmacy closes, what should you do?

While convenience and location matter, you might want to consider other factors that can help you meet your health care needs. For example, some pharmacies have staff who speak your native language, independent pharmacy business owners may be active in your community, and many locations offer over-the-counter products like hormonal contraception, the overdose-reversal drug naloxone and hearing aids.

You may also consider locations – especially corporate-owned pharmacies – that also offer urgent care or primary care services. In addition, most pharmacies offer vaccinations, and some offer test-and-treat services for infectious diseases, diabetes education and help with quitting smoking.

What to ask if your pharmacy closes

If your preferred pharmacy closes and you need to find another one, keep the following questions in mind:

What will happen to your old prescriptions? When a pharmacy closes, another pharmacy may buy its prescriptions. Ask your pharmacist if your prescriptions will be automatically transferred to a nearby pharmacy, and when this will occur.

What’s the staffing situation like at other pharmacies? This is an important factor in choosing a new pharmacy. What are the wait times? Can the team accommodate special situations like emergency refills or early refills before vacations? Does the pharmacist have a relationship with your primary care physician and your other prescribers?

Which pharmacies accept your insurance? A simple call to your insurer can help you understand where your prescriptions are covered at the lowest cost. And if you take a medication that’s not covered by insurance, or if you’re uninsured, you should ask if the pharmacy can help you by offering member pricing or manufacturer coupons and discounts.

What are your accessibility needs? Pharmacies often offer services to make your care more accessible and convenient. These may include medication packaging services, drive-thru windows and home delivery. And if you’re considering switching to a mail-order pharmacy, you should ask if it has a pharmacist to answer questions by phone or during telehealth visits.

Remember that it’s best to have all your prescriptions filled at the same pharmacy chain or location so that your pharmacist can perform a safety check with your complete medication list. Drug interactions can be dangerous.

Community pharmacies have been staples of neighborhoods for more than a century. Unfortunately, current trends in pharmacy closures pose real threats to public health. We hope lawmakers address the underlying systemic issues so more Americans don’t lose access to their medications, health services and pharmacists.The Conversation

Lucas A. Berenbrok, Associate Professor of Pharmacy and Therapeutics, University of Pittsburgh; Michael Murphy, Assistant Professor of Pharmacy Practice and Science, The Ohio State University, and Sophia Herbert, Assistant Professor of Pharmacy, University of Pittsburgh

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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