Fixing the ecological flow in world's rivers contributes to preservation of river ecosystems and management water resources, related social economic aspects; It is volume necessary maintain a healthy ecosystem capable providing goods services. The hydrological method was first proposed estimate flow, developed 60s 70s 20th century. There are different methods such as: hydrological, hydraulic, e...

One view of heuristics is that they are imperfect versions of optimal statistical procedures considered too complicated for ordinary minds to carry out. In contrast, the authors consider heuristics to be adaptive strategies that evolved in tandem with fundamental psychological mechanisms. The recognition heuristic, arguably the most frugal of all heuristics, makes inferences from patterns of mi...

The Pareto Optimal Model Assessment Cycle (POMAC), a multiple-criteria model assessment methodology, is described for exploring uncertainty in the relationships between ecological theory, model structure, and assessment data. Model performance is optimized to satisfy, simultaneously, each component of a vector of assessment criteria (model outputs), rather than the usual procedure of optimizing...

Understanding of the functioning of urban ecosystems cannot be achieved without the data collection and modeling developed by scientists working for federal, state, and local agencies, often in cooperation with university researchers. The project engages a broad range of partners. Local government agencies include the City of Phoenix (COP), Maricopa Association of Governments (MAG) and Arizona ...

Since the mid-eighties, a vast literature has evolved around the concept of sustainable development. It shows a wide support for changes in policy-making and decision-making, for instance, to integrate environmental interests in national and international political processes. Remarkably, recommendations of contours and new elements of research methods and policy analysis for sustainable develop...

Human population biology is largely and appropriately an anthropological endeavor in which attempts are made to understand why our species is so adept at adjusting to change. The question is of obvious relevance, not only for understanding our evolutionary past and the factors contributing to present diversity, but also in trying to comprehend the limits of our biological capacity to adapt to t...

Coastal lagoons ecosystems are very complex to model and its global behaviour it’s hard to simulate. This complexity is even greater if the simulation model includes the intelligent entities like decision-makers involved in the system. Typical ecological simulations include only models of entities that have a very easy to predict behaviour (using mathematical equations and/or simple logical rul...

The aim of this paper is the study of the long-term behavior of population communities described by piecewise smooth models (known as Filippov systems). Models of this kind are often used to describe populations with selective switching between alternative habitats or diets or to mimic the evolution of an exploited resource where harvesting is forbidden when the resource is below a prescribed t...