The Tayside Beaver Study Group is encouraging landowners to contact them if they have any issues with beavers on their land.
This follows the news that a Scottish Natural Heritage (SNH) study confirmed that 146 beavers are currently living in the rivers in Tayside.
Surveys from May and July, along with long-term observations, found that there are about 40 groups of beavers and seven dams in the Tay area.
The beavers were found in the Tayside rivers and lochs stretching from Kinloch Rannoch, Kenmore and beyond Crieff in the west, to Forfar, Perth and Bridge of Earn in the east.
Researchers also spoke to farmers, fishermen and ghillies in the area. In response to their concerns about dam building, the report recommends measures such as installing devices to control water flow at problem beaver dams, protecting large and valuable trees next to rivers, and protecting lodges from being washed away to keep beaver construction activities to a minimum.
David Bale, chair of the Tayside Beaver Study Group, said: “This report is an important starting point for the Study Group.
“For the first time, we have a clear picture of how many beavers there are and how far they have spread. As the beavers are in an area with farming and fishing, this is a good chance to see how beavers may affect land use.
“We encourage land managers to contact the Tayside Beaver Study Group if they have any issues with the beavers on their land. The group is keen to advise on non-lethal ways of managing problems arising from dams and burrowing in banks, as well as helping protect valuable trees.”