Modeling the stochastic dynamics of the aggregate stock in collapsed fisheries: The case of the Northern cod stock

Autor:	Maroto Fernández, José María, Morán Cabré, Manuel
Rok vydání:	2013
Předmět:	Estadística matemática Biología marina Biomatemáticas Peces Estadística aplicada
Zdroj:	E-Prints Complutense. Archivo Institucional de la UCM instname E-Prints Complutense: Archivo Institucional de la UCM Universidad Complutense de Madrid
Popis:	Motivated by the evidence that many collapsed stocks have failed to recover despite the fact that fishing mortality has been reduced, or even when a moratorium is in effect, we develop a methodological approach using splines to analyze the stochastic population dynamics of fish stocks at low stock levels. Considering the aggregate Northern cod stock by way of illustration, we find that the species’ lack of recovery, despite the moratorium which still remains in force, is consistent with the hypothesis of depensatory population dynamics at low population sizes, as opposed to the compensation estimated by the conventional regression methods used in classic bioeconomic models.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::44b1ce3c336b2a384352ca8d2327de7c https://eprints.ucm.es/id/eprint/23024/1/paper-cod-Eprint-2013.pdf Zobrazit plný text záznamu