Alves dedicated the victory to coach Tito Vilanova.
"We had chances to close out the match but in the end we didn't do it," he said.
"Once again we stepped up to the challenge. We want to dedicate this victory to our manager. The most important think you can do is fight for life.
"It doesn't matter who plays, the level of quality is always the same.
"Hopefully we'll be on the same form next year."