“…This is due to the quantified approach, which the portfolio theory applies for the general case of decision-making in investment and resource allocation. Examples of such applications one can find for the cases: management sciences ( Levy and Lim, 1994 ); product portfolio management ( Doorasamy, 2015 ); marketing ( Brown, 2010 ); environmental sciences ( Matthies et al., 2019 ); climate change ( Crowe and Parker, 2008 ); environmental policy ( Antal, 2008 ); energy policy ( deLlano-Paz et al., 2017 ); water management (Marinoni et al., 2008); water planning ( Beuhler, 2006 ); fish population ( DuFour et al., 2015 ); real estate portfolio management ( Souza, 2014 ); agricultural sciences ( Barkley and Hanawa, 2008 ); portfolio for biodiversity ( Figge, 2004 ); agronomy ( Radulescu et al., 2014 ); health care ( Fagefors and Lantz, 2021 ); project portfolio management ( El Hannach et al., 2019 ). The portfolio approach is applied also for inventory management and the risk is formalized in probabilistic forms ( Zhi et al., 2021 ).…”