Swiss Study Reveals Stinging Nettles Are Replacing Orchids Across Europe

A major Swiss-led scientific study has revealed a significant shift in Europe’s plant biodiversity. Researchers have found that nitrogen-loving plants, such as stinging nettles, are increasingly replacing rarer species like orchids across forests, meadows, and other natural habitats.

The study, supported by the Swiss National Science Foundation (SNSF), provides one of the most comprehensive analyses of changes in European plant life over the past six decades. Scientists examined approximately 650,000 plant records collected between 1960 and 2020 from a large European biodiversity database.

Researchers identified a clear increase in plant species that thrive in nitrogen-rich environments. According to the study, excessive use of artificial fertilizers, intensive livestock farming, and nitrogen emissions from traffic and industry have significantly altered soil conditions across Europe.

As nutrient levels rise, plants adapted to poor soils are struggling to survive. Orchids, known for their beauty and ecological importance, are among the species being displaced by fast-growing plants such as stinging nettles.

Interestingly, Switzerland appears to be showing some positive signs. Ecologist Jürgen Dengler of the Zurich University of Applied Sciences (ZHAW) noted that the trend is slightly weaker in Switzerland, suggesting that regional efforts to reduce fertilizer use may be producing results. However, similar improvements have not yet been observed across much of Europe.

The study also found an increase in shade-loving plant species in grasslands. Scientists believe this is linked to denser vegetation caused by nutrient enrichment and reduced land management practices.

Surprisingly, researchers discovered that climate change currently has a smaller impact on plant diversity than expected. Vegetation appears to be responding more slowly to rising temperatures than many experts predicted.

The Swiss Alps represent an important exception. In mountainous regions, scientists have already observed warmth-loving plant species migrating from lower elevations to higher altitudes as temperatures continue to rise.

Researchers warn that protecting biodiversity will require continued efforts to reduce nitrogen pollution, improve land management, and preserve habitats for vulnerable plant species. Without action, Europe could see further declines in some of its most unique and valuable native plants.

Swiss Lynx Face Ongoing Threats Despite Population Recovery

The lynx has made a remarkable comeback in Switzerland over recent decades, successfully re-establishing itself across parts of the Alpine and Jura regions. However, conservation experts warn that the species still faces significant challenges that could threaten its long-term survival.

According to WWF Switzerland, recent studies reveal that road and railway accidents remain the leading cause of death among wild lynx. As transportation networks expand and traffic volumes increase, these majestic predators continue to face serious risks while moving through their natural habitats.

Researchers have also confirmed cases of illegal poaching. While documented incidents already raise concerns, experts believe the true scale of poaching may be much higher due to unreported cases that remain undetected in remote areas.

In addition to human-related threats, scientists have identified congenital heart defects in several lynx populations. Researchers suggest that these rare health problems may be linked to limited genetic diversity within Switzerland’s lynx population, highlighting a growing concern for the species’ future health and resilience.

WWF lynx expert Gabor von Bethlenfalvy emphasized the importance of the lynx within Switzerland’s ecosystem. As a top predator, the lynx helps regulate wildlife populations and contributes to maintaining healthy and stable forest environments.

Today, approximately 360 lynx are believed to live across the cross-border Alpine and Jura regions. Due to its central role in supporting these populations, Switzerland carries a significant responsibility in ensuring the species’ long-term protection.

Conservation organizations are calling for stronger measures, including the creation of connected wildlife corridors, targeted releases to improve genetic diversity, enhanced international cooperation, and continued scientific monitoring. Experts believe these actions are essential to secure a sustainable future for one of Switzerland’s most iconic wild animals.

Otter Returns to Switzerland After Decades of Absence.

The otter has returned to Switzerland after disappearing for decades, marking a significant milestone for wildlife conservation efforts. However, environmental organisations warn that its long-term survival depends heavily on continued river restoration and habitat protection across the country.

According to conservation groups Pro Natura and Pro Lutra, multiple otter sightings were recorded in January 2026 across different regions of Switzerland, suggesting a slow but steady natural return of the species.

One of the most notable sightings occurred on January 11 in Selzach in the canton of Solothurn, where snow tracks along the River Aare confirmed otter presence for the first time in 91 years. Another sighting followed on January 15 when a wildlife camera captured an otter swimming in the Linth Canal in the canton of Glarus.

Additional reports of otters, including juvenile individuals, have also emerged from several Swiss cantons such as Graubünden, Bern, St Gallen, Ticino, Lucerne, and Zurich, indicating a wider regional presence.

The species disappeared from Switzerland in the late 20th century, with the last confirmed sighting recorded in 1989 at Lake Neuchâtel. Experts attribute its extinction to hunting, river modification, and water pollution, despite legal protections introduced in 1952 and environmental bans implemented in the 1980s.

Conservationists explain that otters have been able to naturally recolonise Switzerland by travelling through river networks connected to the Danube basin via Austria’s Inn region. This ecological corridor has allowed the species to gradually expand back into Swiss waterways.

However, experts warn that the otter’s survival is still uncertain. The species depends heavily on healthy fish populations, yet studies show that two out of three fish species in Switzerland are currently threatened. Environmental groups stress that river renaturation must be expanded significantly to support aquatic biodiversity.

Authorities currently restore less than half of the 50 kilometres of river habitat required annually by law, raising concerns about long-term ecological balance. Without stronger action, conservationists fear that the otter’s return could remain fragile.

World Otter Day, celebrated on the last Wednesday of May, is used globally to raise awareness about otter conservation. In Switzerland, events are also held on May 27, including educational activities at Muzoo La Chaux-de-Fonds and online webinars focusing on otter species and habitat protection.

Blackcap Becomes Switzerland’s Most Common Bird, Overtaking Chaffinch

The blackcap has become the most common bird species in Switzerland, overtaking the chaffinch, according to the 2025 bird monitoring programme by the Swiss Ornithological Institute.

Researchers report that there are now nearly one million breeding pairs of blackcaps across the country. The species has expanded significantly, benefiting from forest growth at higher altitudes and changing environmental conditions.

The study also suggests that more birds are choosing to remain in Europe during winter instead of migrating south, which has contributed to the blackcap’s population increase.

At the same time, chaffinch numbers have declined. Scientists say the reasons for this decrease remain unclear, describing it as puzzling due to the lack of identifiable causes.

Other common species such as sparrows and blackbirds continue to rank among the top ten most widespread birds in Switzerland. However, urban species like the street pigeon do not appear in the top 50.

The monitoring programme involved around 300 staff members from the Swiss Ornithological Institute, who dedicated more than 3,000 hours to collecting data on breeding bird populations across the country.

Experts say the findings highlight how climate change, habitat shifts, and migration behavior are reshaping Switzerland’s bird populations.

Preventive Culling Slows Wolf Population Growth in Switzerland

Preventive culling measures have successfully slowed the growth of the wolf population in Switzerland, according to a federal assessment covering regulatory actions since 2023.

The Federal Office for the Environment (FOEN) reported that more than 220 wolves have been killed across three regulatory phases, including animals removed before causing any recorded livestock damage.

During the most recent period from September 2025 to January 2026, authorities culled 77 wolves. In the previous 2024/2025 phase, 92 wolves were removed, while the initial shorter phase recorded 55. In all cases, the number of wolves shot remained below the maximum quotas authorized by federal authorities.

FOEN data shows that during the latest cycle, 76 wolves were removed through preventive measures and one following confirmed livestock damage. The government had approved the culling of approximately 115 wolves for that period.

Authorities state that the policy aims to manage wolf numbers in regions where livestock farming is affected while maintaining ecological balance. The approach reflects Switzerland’s effort to balance wildlife conservation with agricultural protection.

The federal government concludes that regulated culling has contributed to stabilizing wolf population growth, although debates continue over long-term wildlife management strategies and conservation ethics.

Swiss Citizens Launch Constitutional Initiative to Protect Pollinating Insects.

A citizen-led committee in Switzerland has launched a popular initiative aimed at strengthening legal protection for bees and other pollinating insects by embedding it directly into the national constitution.

The initiative, titled “In favour of ensuring the pollination of cultivated and wild plants by insects (bee initiative),” was officially published in the Federal Gazette on Tuesday. It brings together beekeepers, environmental supporters, and members of parliament.

The proposal calls on both the federal government and cantonal authorities to take responsibility for ensuring effective pollination of crops and wild plants. It also demands that authorities allocate sufficient resources and establish clear national guidelines to protect pollinating insect populations.

If successful, the initiative must collect at least 100,000 valid signatures by November 19, 2027, to trigger a nationwide referendum.

Supporters argue that pollinating insects are essential for food production and biodiversity, as they play a critical role in maintaining ecosystems and agricultural yields. Without them, many plant species and crops would face serious decline.

The initiative reflects growing public concern over environmental degradation, pesticide use, and habitat loss, all of which have contributed to declining bee populations in recent years.

If approved by voters, the proposal would make pollinator protection a constitutional duty, significantly strengthening Switzerland’s environmental policy framework.

Swiss Glaciers Record Major Snow Deficit Across Regions

Glaciers across Switzerland are experiencing a significant snow deficit this winter, raising concerns about accelerated melting during the upcoming summer season.

According to the Swiss Glacier Monitoring Network, snowfall levels were substantially below average across several key regions, including Upper Valais, Ticino, and Graubünden.

The monitoring organization reported that winter 2025–26 shows an average 25% snow deficit compared to the 2010–2020 baseline.

GLAMOS collected measurements from 25 glaciers across Switzerland during April, revealing that a warm and unusually dry spring contributed heavily to reduced snow accumulation.

Some regions, such as the Bernese Oberland and central Valais, were less affected and remain closer to long-term seasonal averages. However, other glacier zones show clear signs of reduced snowpack.

Experts warn that low winter snow cover is critical because it acts as a protective layer that slows glacier melt during warmer months. Without sufficient snow insulation, glaciers absorb more heat and lose mass more rapidly.

Scientists now expect that the reduced snow cover could intensify glacier retreat in 2026, continuing the long-term trend of ice loss observed across the Swiss Alps.

Switzerland’s glaciers have already been shrinking for decades due to rising temperatures, and this winter’s deficit may further accelerate the process.

Climate researchers emphasize that continued monitoring is essential to understand how extreme weather patterns are impacting alpine ice reserves.