Second, scientific exchange between parties is not crowded out by 'dogmatists'. You may have missed a few exchanges herein.
Scientists can be as dogmatic as anyone else.
Third, the body of knowledge of conservation biology is fragmentary and deals with outcomes that are bounded by uncertainty and project far into the future. But with 3 or 4 textbooks and a Journal in circulation, we should at least have a grasp of the basic principles. This is untenable unless we happen to believe that conservation biologists also are experts on economics, politics, human demographics etc. But we certainly had better expand our understanding of these fields, if we expect to survive as a discipline.