title: Some steps toward a central theory of ecosystem dynamics.
abstract: Ecology is said by many to suffer for want of a central theory, such as Newton's laws of motion provide for classical mechanics or Schroedinger's wave equation provides for quantum physics. From among a plurality of contending laws to govern ecosystem behavior, the principle of increasing ascendency shows some early promise of being able to address the major questions asked of a theory of ecosystems, including, "How do organisms come to be distributed in time and space?, what accounts for the log-normal distribution of species numbers?, and how is the diversity of ecosystems related to their stability, resilience and persistence?" While some progress has been made in applying the concept of ascendency to the first issue, more work is needed to articulate exactly how it relates to the latter two. Accordingly, seven theoretical tasks are suggested that could help to establish these connections and to promote further consideration of the ascendency principle as the kernel of a theory of ecosystems.
authors.affiliation: Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Solomons, MD 20688-0038, USA. ulan@cbl.umces.edu
authors.forename: Robert E
authors.initials: RE
authors.lastname: Ulanowicz
mesh_terms: D000818:Animals; D004463:Ecology / Q000379:methods; D017753:Ecosystem; D008962:Models, Theoretical; D011157:Population Dynamics