So far, 2015 has been a banner year for mergers and acquisitions in the United States. It feels as though every few weeks a new company announces a big-ticket acquisition. But can dealmakers keep up the pace for much longer?

According to a new survey from Dykema Gossett, executives and other M&A professionals see a cooling-off period for the deal market in the future. This forecast doesn't extend to every industry though, as health care and technology sectors as well as privately owned businesses are expected to continue M&A at a steady clip.

Some 37 percent of respondents to Dykema's 11th annual M&A Outlook Survey said they thought M&A activity would strengthen over the next year, a drop from the 59 percent who said so last year. “I think people are feeling like we can't continue maintaining this pace,” says Thomas Vaughn, a partner at Dykema and co-leader of the firm's M&A practice.