Two roles for ecological surrogacy: Indicator surrogates and management surrogates

Malcolm Hunter, Martin Westgate, Philip Barton, Aram Calhoun, Jennifer Pierson, Ayesha Tulloch, Maria Beger, Cristina Branquinho, Tim Caro, John Gross, Jani Heino, Peter Lane, Catherine Longo, Kathy Martin, William H. McDowell, Camille Mellin, Hanna Salo, David Lindenmayer