Top Predators in Marine Ecosystems: Their Role in Monitoring and Management

by Edited by I. L. Boyd , S. Wanless , C. J. Camphuysen

• ISBN13: 9780521612562
• ISBN10: 052161256X
• Format: Paperback
• Copyright: 2006-06-12
• Publisher: Cambridge University Press

Summary

The sustainable exploitation of the marine environment depends upon our capacity to develop systems of management with predictable outcomes. Unfortunately, marine ecosystems are highly dynamic and this property could conflict with the objective of sustainable exploitation. This book investigates the theory that the population and behavioural dynamics of predators at the upper end of marine food chains can be used to assist with management. Since these species integrate the dynamics of marine ecosystems across a wide range of spatial and temporal scales, they offer new sources of information that can be formally used in setting management objectives. This book examines the current advances in the understanding of the ecology of marine predators and will investigate how information from these species could be used in management.

Table of Contents

List of contributors	viii
Preface	xiii
Introduction	1	(10)
I. L. Boyd
S. Wanless
C. J. Camphuysen
Effects of fisheries on ecosystems: just another top predator?	11	(17)
A. W. Trites
V. Christensen
D. Pauly
Physical forcing in the southwest Atlantic: ecosystem control	28	(18)
P. N. Trathan
E. J. Murphy
J. Forcada
J. P. Croxall
K. Reid
S. E. Thorpe
The use of biologically meaningful oceanographic indices to separate the effects of climate and fisheries on seabird breeding success	46	(17)
B. E. Scott
J. Sharples
S. Wanless
O. N. Ross
M. Frederiksen
F. Daunt
Linking predator foraging behaviour and diet with variability in continental shelf ecosystems: grey seals of eastern Canada	63	(19)
W. D. Bowen
C. A. Beck
S. J. Iverson
D. Austin
J. I. McMillan
Distribution and foraging interactions of seabirds and marine mammals in the North Sea: multispecies foraging assemblages and habitat-specific feeding strategies	82	(16)
C. J. Camphuysen
B. E. Scott
S. Wanless
Spatial and temporal variation in the diets of polar bears across the Canadian Arctic: indicators of changes in prey populations and environment	98	(20)
S. J. Iverson
I. Stirling
S. L. C. Lang
Biophysical influences on seabird trophic assessments	118	(13)
W. A. Montevecchi
S. Garthe
G. K. Davoren
Consequences of prey distribution for the foraging behaviour of top predators	131	(12)
I. J. Staniland
P. Trathan
A. R. Martin
Identifying drivers of change: did fisheries play a role in the spread of North Atlantic fulmars?	143	(14)
P. M. Thompson
Monitoring predator-prey interactions using multiple predator species: the South Georgia experience	157	(20)
J. P. Croxall
Impacts of oceanography on the foraging dynamics of seabirds in the North Sea	177	(14)
F. Daunt
S. Wanless
G. Peters
S. Benvenuti
J. Sharples
D. Gremiliet
B. Scott
Foraging energetics of North Sea birds confronted with fluctuating prey availability	191	(20)
M. R. Enstipp
F. Daunt
S. Waniess
E. M. Humphreys
K. C. Hamer
S. Benvenuti
D. Gremiilet
How many fish should we leave in the sea for seabirds and marine mammals?	211	(12)
R. W. Furness
Does the prohibition of industrial fishing for sandeels have any impact on local gadoid populations?	223	(13)
S. P. R. Greenstreft
Use of gannets to monitor prey availability in the northeast Atlantic Ocean: colony size, diet and foraging behaviour	236	(13)
K. C. Hamer
S. Lewis
S. Wanless
R. A. Phillips
T. N. Sherratt
E. M. Humphreys
J. Hennicke
S. Garthe
Population dynamics of Antarctic Krill Euphausia superba at South Georgia: sampling with predators provides new insights	249	(13)
K. Reid
E. J. Murphy
J. P. Croxall
P. N. Trathan
The functional response of generalist predators and its implications for the monitoring of marine ecosystems	262	(13)
C. Asseburg
J. Harwood
J. Matthiopoulos
S. Smout
The method of multiple hypotheses and the decline of Steller sea lions in western Alaska	275	(19)
N. Wolf
J. Melbourne
M. Mangel
Modelling the behaviour of individuals and groups of animals foraging in heterogeneous environments	294	(16)
J. G. Ollason
J. M. Yearsley
K. Liu
N. Ren
The Scenario Barents Sea study: a case of minimal realistic modelling to compare management strategies for marine ecosystems	310	(14)
T. Schweder
Setting management goals using information from predators	324	(23)
A. J. Constable
Marine reserves and higher predators	347	(14)
S. K. Hooker
Marine management: can objectives be set for marine top predators?	361	(9)
M. L. Tasker
Index	370