Dynamics of a Seasonally Forced Phytoplankton-Zooplankton Model with Impulsive Biological Control

<div>Time series of system (<a href="https://static.hindawi.com/articles/ddns/volume-2016/2560195/figures/#EEq2.3">6</a>) without (a) and with (b) seasonal forcing of the phytoplankton growth rate when <svg height="11.5564pt" id="M236" style="vertical-align:-2.26807pt" version="1.1" viewbox="-0.0498162 -9.28833 103.585 11.5564" width="103.585pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M300 -147C201 -63 143 98 143 270S200 602 300 686L282 710C136 610 70 450 70 271V270C70 89 136 -72 282 -170L300 -147Z" id="g113-41"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="346" vert-adv-y="346"></glyph.data></g><g transform="matrix(.013,0,0,-0.013,4.498,0)"><path d="M600 480C600 590 528 650 384 650H143L137 622C222 614 225 607 210 531L130 127C113 41 106 36 23 28L17 0H294L300 28C204 36 195 42 212 127L243 284L314 263C327 263 339 263 352 264C465 271 600 337 600 480ZM508 481C508 351 402 304 329 304C289 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Discrete Dynamics in Nature and Society

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Figure 1

Figure 1: Dynamics of a Seasonally Forced Phytoplankton-Zooplankton Model with Impulsive Biological Control 