“…Standard density-dependent population theory, exemplified by logistic growth models (Tsoularis and Wallace, 2002), holds that populations reduced to low densities should in the absence of migration increase at close to the maximum biological rate. Mate et al, 1997;Baumgartner andMate, 2003, 2005;Schick et al, 2009Childerhouse et al, 2010Mate et al, 2011;Zerbini et al, 2016Zerbini et al, 2015 Passive acoustic monitoring 10s-1000s km Davis et al, 2017 and studies cited therein Webster et al, 2016;Jacobs et al, 2018;Rayment et al, 2018Waite et al, 2003Mellinger et al, 2004;Rone et al, 2012;Širović et al, 2015;Wright et al, 2018 Autonomous vehicles with on-board acoustics 10s-100s km Baumgartner, 2014;Davis et al, 2016 Stable isotopes 100s-1000s km Lysiak, 2009;Lysiak et al, 2018 Best andSchell, 1996;Rowntree et al, 2001Rowntree et al, , 2008Valenzuela et al, 2009Valenzuela et al, , 2010Valenzuela et al, , 2018Carroll et al, 2015 Genetics 100s-1000s km Schaeff et al, 1993;Malik et al, 1999;Frasier et al, 2007Baker et al, 1999Patenaude et al, 2007;Valenzuela et al, 2009;Carroll et al, 2011, 2014, 2018…”