کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4379111 | 1303508 | 2006 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Accounting for variation in prey selectivity by zooplankton
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Accounting for variation in prey selectivity by zooplankton Accounting for variation in prey selectivity by zooplankton](/preview/png/4379111.png)
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Modelling - Volume 199, Issue 1, 1 November 2006, Pages 82-92
Journal: Ecological Modelling - Volume 199, Issue 1, 1 November 2006, Pages 82-92
نویسندگان
Aditee Mitra, Kevin J. Flynn,