xvi
13.1.2 The Past Twenty Yea rs
259
13.2 The Model
260
Contents
12. Kelp, Urchins and Otters in the California Coastal Region231
ERIN J. TORNATORE AND MATIHIAS RUTH
12.1 Background
231
12.2 Model Structure
233
12.3 Results
238
12.4 Conclusions
12.5 Questions and Tasks
13. Nile Perch Pop ulation Dynamics in Lake Victoria:
Implications for Manage ment and Conservation
242
243
257
LES KAUFMAN AND JESSE SCHWARTZ
13.1 Introduc tion
257
13.1.1 The Lake and Its Fishes
258
13.2 .1 Model Structure and Development
260
13 .2.1.1 General Model Structure
262
13.2 .1.2 Prey Modules
262
13.2 .1.] Fishery Module
264
13.2.1.4 Nile Perch Module
267
13.3 Model Behavior
274
13.4 Conclusions
278
13.5 Questions and Tasks
279
14. Dynamics of Multiple Fish Species
Under Variable Levels of Exploitation
314
MATTHIAS RUTH AND JAMES LINDHOLM
14.1 Introduction
314
14.2 The Model
315
14.3 Key Parame ters, Initial Conditions
and Assumptions
319
14.4 Results
321
14.5 Discussion
326
14.6 Questions and Tasks
327
15. Fish Pop ulation Responses to Sea Floor
Habitat Alteration: Implications for the Design
of Marine Protected Areas
342
JAMES LINDHOLM, PETER AUSTER, MATTHIAS RUTH
AND LES KAUFMAN
15.1 Introduction
342
15.2 The Model
344
15.3 Model Assumptions
347
15.4 Model Results
348