The global loss of wetlands is smaller than previously assumed, according to the recent study Extensive global wetland loss over the last three centuries in the internationally renowned scientific journal Nature. Peatland scientists from the University of Greifswald, partner in the Greifswald Mire Centre, have contributed data from their Global Peatland Database and from the historical holdings of the local peatland library. The results now help to better assess the climate impact of peatlands, e.g. to quantify the change in carbon storage and in methane emissions. It also allows conclusions to be drawn about the impact of wetland loss and how wetland restoration can be better planned .

The study by an authors' collective led by Standford University shows that only 21-35% of the world's wetlands have been lost since 1700, instead of 50-87% as previously thought. In a historically first reconstruction, the scientists combed through thousands of records of drainage and land-use change in 154 countries for the study to compare them with the current distribution of drained and altered wetlands to get a picture of the state since 1700.

"In terms of area, the loss is not as great as is often claimed. What seems to be good news at first glance, however, should not deceive us. Worldwide, about four million km² of wetlands have disappeared, of which about 0.5 million km² are wet peatlands. However, drained peatlands are responsible for 4-5% of global greenhouse gas emissions: they are relatively small areas but with huge consequences!" says Prof. Dr. Dr. Hans Joosten, emeritus professor and co-author of the study.

16/01/2023 With Dr. rer. nat. Gerald Jurasinski, the new W3 professorship for Peatland Science at the University of Greifswald has been filled since the beginning of 2023. This makes the University of Greifswald the only university with a peatland science professorship in Germany. The creation of the professorship, agreed in 2018 by the University of Greifswald and the state government of Mecklenburg-Vorpommern (M-V), takes the tradition and excellence of Greifswald's peatland research, as well as the high proportion of peatland in the state's land area into account.

The Greifswald Mire Centre, in which the University of Greifswald is a partner, is extremely pleased about the strengthening of research and teaching: "We have been engaging to establish this position with many allies since 2015 and are very grateful to all supporters that the professorship could finally be filled with Gerald Jurasinski," Dr. Greta Gaudig and Dr. Franziska Tanneberger from the Greifswald Mire Centre say. Dr. Gerald Jurasinski has ambitious plans for the professorship: "We need to make much faster progress in peatland rewetting. Our research will show how we can do better. In doing so, we not only want to generate knowledge, but also disseminate it and further develop Greifswald as a central hub of peatland expertise. Among other things, we want to continue building a network with many national and international partners that measures greenhouse gas emissions and other ecosystem services of peatlands in M-V and beyond. Our results will help us to act in the right way, especially with regard to climate protection."

Those interested can meet Dr Jurasinski at the public lecture “A brief history of research on greenhouse gas emissions from peatlands in northern Germany” on 17th January at 6 pm at the Alfried Krupp Wissenschaftskolleg or during a short walk across Greifswald's peatlands on the occasion of World Wetlands Day on 2 February. The walk starts at 2 p.m. at the Stralsunder Straße bridge at the harbour.

For more information, see the GMC press release on the peatland professorship.