caa a22 4500 475838238 CHVBK 20180406123854.0 cr unu---uuuuu 170329e20000401xx s 000 0 eng 10.1007/s101440050006 doi (NATIONALLICENCE)springer-10.1007/s101440050006 Butterworth D. S. MARAM (Marine Resource Assessment and Management Group), Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701, South Africa Tel. +27-21-650-2343; Fax +27-21-650-2334 e-mail: dll@maths.uct.ac.za, ZA aut Possible interpretation problems for the current CITES listing criteria in the context of marine fish species under commercial harvest [Elektronische Daten] [D. S. Butterworth] The current criteria for listing species on CITES Appendices are summarized briefly. A précis is given of problems with these criteria in a marine species context, as identified by an FAO ad hoc Expert Group meeting in November 1998. Three aspects of the criteria that are of concern to the author are discussed briefly. These are the definition of a "decline," specifications for taking account of uncertainty, and the desirability of using existing stock-recruitment data for marine fish species to estimate the spawning biomass level at which critical depensation might occur. This last would provide guidance in specifying resource levels at which there is a threat of extinction when reformulating the CITES criteria. The Society of Population Ecology and Springer-Verlag Tokyo, 2000 Key words Decline nationallicence Depensation nationallicence FAO nationallicence Precautionary nationallicence Uncertainty nationallicence https://doi.org/10.1007/s101440050006 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s101440050006 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Butterworth D. S. MARAM (Marine Resource Assessment and Management Group), Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701, South Africa Tel. +27-21-650-2343; Fax +27-21-650-2334 e-mail: dll@maths.uct.ac.za, ZA aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer