Tom Lockyer collapsed on the pitch with the sides level at 1-1.
The players were taken off midway through the second half as Lockyer received medical treatment after collapsing off the ball.
Supporters sang Lockyer's name and the crowd at Vitality Stadium rose to their feet to applaud the 29-year-old as he was carried off the pitch on a stretcher.
Following confirmation that the fixture had been abandoned, the players and managers of both clubs returned to the pitch to applaud the supporters.
More to follow.