POTSDAM, Germany (AP) — The avenues, monuments and gardens in the park surrounding Sanssouci Palace, a sprawling green oasis in the heart of the German city of Potsdam and a UNESCO world heritage site, look as magnificent as ever.
But a closer look shows that all is not well with the park's trees, which increasingly are struggling with the effects of climate change. Among the signs are beech trees with thinning crowns, big branches that have crashed to the ground and trunks with much of their bark peeled off.
“I've been watching this garden for over 30 years, and I see very serious changes,” says Sven Kerschek, a former chief gardener for part of the park. “Since 2017 or 2018, we have had a very, very serious increase in trees and shrubs dying; and not just dying, the health of the trees is changing.”
The region experienced a particularly hot and dry summer in 2018, followed by several more years with little rain. Comparatively wet summers last year and this year haven't made up for their effects.
Heat and a lack of rain aren't the only problems, Kerschek says: “Climate change is more complex.” Well-watered trees standing on the banks of streams and lakes also show signs of stress. Constant harsh sunlight, a lack of atmospheric humidity, storms, increasing fungal infections and the spread of insect species that didn't previously occur in the area are among other factors that play a part.
From 2002 until 2015, the park lost between 18 and 87 trees every year. The number hasn't dropped below 100 since; it reached 315 in 2020 before falling back somewhat.
The Prussian Palaces and Gardens Foundation, which oversees Sanssouci Park and many other sites in Berlin and the surrounding state of Brandenburg, is telling the story of the trees' struggle with climate change in an open-air exhibition this summer, titled “Re:Generation.” At points around the park, visitors can see examples of the problems and ideas for how they might be tackled.
“Perhaps the exhibition will help point out that we have such problems here; that extreme examples of climate change are already visible not just where people live in a river valleys and have to experience a flood, but also in idyllic Sanssouci Park," says Katrin Schröder, a curator of gardens at the foundation.
Visitors are pointed to trees suffering from “sunburn,” with drying and peeling bark making them vulnerable to fungi and animals. They can see that ground water receded drastically at times in recent years, making life difficult for older trees in particular. But there are also more heartening examples, “survival artists” that have defied the difficulties.
Those trees give the gardeners reason to hope. Kerschek, who helped design the exhibition, says they want to “try to continue working with the genetic material we have here in the garden."
The oldest trees in Sanssouci Park are about 300 years old. The hope is that robust older trees which have already been through variations in climate are better placed to adapt — and that even if they don't look particularly healthy themselves, they can pass on that capability in their seeds. One idea is to collect those seeds and grow young trees in a special nursery mirroring the difficult conditions of the park, Kerschek says.
Sanssouci Palace itself was the summer residence of Prussian King Frederick II, better known as Frederick the Great. It was completed in 1747 with opulent vineyard terraces, a royal retreat with a name that translates from French as “carefree.”
The garden was later expanded substantially, growing into a 19th-century landscaped park that covers nearly 300 hectares (740 acres) and measures more than 2 kilometers (1 1/4 miles) from east to west. It has nearly 60 gardeners and has been part of UNESCO's World Heritage List since 1990.
While almost all the native tree species in the park have struggled with the effects of climate change, the solution is not to move to exotic species.
Schröder notes that Potsdam still has a central European climate with sometimes long and very late frosts, so “we can't do anything here with Mediterranean vegetation.”
But one approach may be to look at whether it could use varieties of linden trees, oaks, beeches or others from areas such as southeastern Europe that have very hot summers but also late frosts, she says — on condition that they look similar to the trees already at Sanssouci.
“We don't want to change the park in such a way that it it has a completely changed mixture of trees,” Schröder says.
AP video journalist Pietro De Cristofaro contributed to this report.
Signs explaining the trees were put up in the park of the Sanssouci Palace in Potsdam, Germany, Thursday, July 25, 2024. Germany's Sanssouci Park seeks solutions as its trees struggle with climate change. (AP Photo/Geir Moulson)
People walk in the park of the Sanssouci Palace in Potsdam, Germany, Thursday, July 25, 2024. Germany's Sanssouci Park seeks solutions as its trees struggle with climate change. (AP Photo/Geir Moulson)
A fountain sprays water at the bottom of the Sanssouci Palace in Potsdam, Germany, Thursday, July 25, 2024. Germany's Sanssouci Park seeks solutions as its trees struggle with climate change. (AP Photo/Geir Moulson)
People walk in the park of the Sanssouci Palace in Potsdam, Germany, Thursday, July 25, 2024. Germany's Sanssouci Park seeks solutions as its trees struggle with climate change. (AP Photo/Geir Moulson)
PARIS (AP) — Morocco’s Fatima Ezzahra El Idrissi has smashed the world record in the women’s marathon for runners with visual impairments on the last day of the Paralympic Games.
El Idrissi finished in 2 hours, 48 minutes and 36 seconds on Sunday, beating the previous record from Japan’s Misato Michishita in Hofu City in December 2020 by nearly 6 minutes.
“I wasn’t running for a time, only for a medal," the 29-year-old Moroccan said. "I wasn’t aiming to get the world record, just to get the gold, and now I have both."
Compatriot Meryem En-Nourhi was just over 9 minutes behind, followed by Michishita, almost 15 minutes behind the winner.
Elena Congost thought she'd won bronze, but the Spanish runner was later disqualified for releasing the tether to her guide, Mia Carol Bruguera, before the finish.
Michishita only found out she was upgraded to bronze after doping control.
“I just couldn’t believe it,” said the Japanese runner, who said she got injured after winning the last edition in Tokyo and wasn't certain she'd be able to race in Paris.
Tunisia’s Wajdi Boukhili won the men’s T12 marathon.
The 25-year-old Boukhili finished in 2 hours, 22 minutes and 5 seconds, ahead of Spain’s Alberto Suarez Laso and Paralympic record holder El Amin Chentouf of Morocco. All three ran season-best times.
Swiss wheelchair racers Catherine Debrunner and Marcel Hug won the women’s and men’s marathons for the T53/54 catagories.
Debrunner, the world record holder, finished in 1:41:50, more than four minutes ahead of Australia’s Madison de Rozario and the United States’ Susannah Scaroni, who took silver and bronze, respectively.
Tatyana McFadden, the most decorated American wheelchair racer, was seventh, just over 12 minutes behind Debrunner. The 35-year-old leaves Paris with a silver medal from the 100 and bronze from the 4x100 universal relay.
Hug won the men’s race in 1:27:39, ahead of China’s Jin Hua and Tomoki Suzuki of Japan.
More medals were to be awarded later Sunday before what artistic director Thomas Jolly said would be a huge dance party at Stade de France for the closing ceremony.
The United States women’s wheelchair basketball team was to play defending champion Netherlands for gold, and there were finals in para powerlifting, as well as five races in para canoe.
AP Paralympics: https://apnews.com/hub/paralympic-games
Morocco's Fatima Ezzahra El Idrissi reacts as she stands on the podium with her gold medal after winning the women's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Morocco's Fatima Ezzahra El Idrissi poses with her gold medal after winning the women's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
ADDITION ELENA CONGOST WAS DISQUALIFIED FOR LETTING GO OF THE ROPE TO HELP HER GUIDE - Spain's Elena Congost, right, arrives in third position in the women's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
ADDITION ELENA CONGOST WAS DISQUALIFIED FOR LETTING GO OF THE ROPE TO HELP HER GUIDE - Spain's Elena Congost, right, celebrates as she arrives in third position in the women's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
ADDITION ELENA CONGOST WAS DISQUALIFIED FOR LETTING GO OF THE ROPE TO HELP HER GUIDE - Spain's Elena Congost celebrates with his guide as she arrives in third position in the women's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Australia's Madison de Rozario reacts as she wins the silver medal in the women's marathon T54 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Susannah Scaroni of the U.S. wins the bronze medal in the women's marathon T54 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Susannah Scaroni of the U.S. reacts after winning the bronze medal in the women's marathon T54 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Silver medalist Australia's Madison de Rozario, centre, bronze medalist Susannah Scaroni of the U.S., left, and winner Switzerland's Catherine Debrunner speak after the women's marathon T54 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Switzerland's Catherine Debrunner wins the women's marathon T54 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Japan's Tadashi Horikoshi lies on the ground after the men's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Japan's Yutaka Kumagai lies on the ground after the men's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Bronze medalist Morocco's El Amin Chentouf celebrates after the men's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Japan's Tadashi Horikoshi, right, and Tunisia's Hatem Nasrallah lie on the ground after the men's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Morocco's Fatima Ezzahra El Idrissi celebrates as she wins the women's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
Morocco's Fatima Ezzahra El Idrissi wins the women's marathon T12 at the 2024 Paralympics, Sunday, Sept. 8, 2024, in Paris, France. (AP Photo/Thibault Camus)
