Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Accounting for variation in prey selectivity by zooplankton

Mitra, A. ORCID: https://orcid.org/0000-0001-5572-9331 and Flynn, K.J. 2006. Accounting for variation in prey selectivity by zooplankton. Ecological Modelling 199 (1) , pp. 82-92. 10.1016/j.ecolmodel.2006.06.013

Full text not available from this repository.

Abstract

An ingestion-based prey selectivity function (IS) is described specifically to aid the simulation of zooplankton activity in circumstances in which selectivity varies, for example, as functions of prey palatability or abundance. In IS, the ultimate control of the rate of predation is not the external concentration of prey but the total rate of prey capture relative to predator demand. Further, “preference” is not an input (as it is for most prey selection functions) so that the selection or deselection of any or all prey can be freely altered. Hence, if required, all prey could be deselected, or the impact of inert materials or turbulence adversely affecting capture rates of any or all prey can be considered. Capture kinetics are not fixed at a common value for all items. In its basic form IS contains no more variables than other selectivity functions. The construction and use of switches to vary grazing in response to changes in abundance of alternative prey types or in prey nutritional (stoichiometric) quality is demonstrated. The advantages of using IS instead of the widely used ratio-based selectivity function is demonstrated with reference to model fits to experimental datasets for microzooplankton activity.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Earth and Environmental Sciences
Publisher: Elsevier
ISSN: 0304-3800
Date of Acceptance: 20 June 2006
Last Modified: 07 Nov 2022 09:37
URI: https://orca.cardiff.ac.uk/id/eprint/129689

Citation Data

Cited 45 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item