STABLE ISOTOPES IN AQUATIC SYSTEMS: SAMPLE PREPARATION,

0,34
MB ANALYSIS, AND INTERPRETATION

44
stron

4876
ID University of New Brunswick

2005
rok

TABLE OF CONTENTS

ABSTRACT.v

RÉSUMÉ.v

INTRODUCTION.1

Stable isotope chemistry.1

International isotopic standards1

Sample calculation2

Isotope literature.2

SAMPLE PRESERVATION AND PREPARATION3

Preservation methods3

Submitting samples for analysis.3

Additional techniques.4

INTERPRETATION OF STABLE ISOTOPE DATA5

Fractionation5

Animal SI ratios relative to diet.5

Mechanisms responsible for fractionation.6

Equilibration with a diet in lab and field: Growth vs. turnover.6

FOOD WEBS7

Primary productivity8

APPLICATIONS.9

Contaminants.9

Migratory patterns.9

Mixing models.10

Nutrient input.12

Diet shifts.12

Otoliths.13

Large-bodied species.13

FURTHER CONFOUNDING FACTORS13

Tissue differences13

Nutritional status14

Age.14

CONCLUSION15

ACKNOWLEDGEMENTS.15

REFERENCES16

APPENDIX 1 – Stable Isotope Laboratories in Canada37