"While I step into this position under sad circumstances, as a board we will continue Michael's good work," he says.
"His influence will continue as we develop plans for the future of our industry."
Acting chair Barry Harris says Mr van der Poel is a strong advocate for dairy farmers and the sector's future.
"Jim is experienced as a dairy farmer and in governance for our sector," he says.
"He is particularly keen to ensure dairy farmers continue to be competitive and responsible as we address the current challenges around sustainability, securing a skilled workforce and continuing to produce quality products for the world."