Cormorant-fisheries conflicts: Stable isotopes reveal a consistent niche for avian piscivores in diverse food webs

Ecological Applications

Volumn 21, Issue 8, 2011, Pages 2987-3001

  Doucette, Jennifer L ^a   Wissel, Björn ^a   Somers, Christopher M ^a  

^a UNIVERSITY OF REGINA   (Canada)

Author keywords

13C; 15N; Canada; Diet analysis; Food web; Freshwater; Lakes; Phalacrocorax spp; SIAR mixing model; Stable carbon isotopes; Stable nitrogen isotopes; Trophic position

Indexed keywords

ABUNDANCE; AVIFAUNA; CARBON ISOTOPE; COMMERCIAL SPECIES; ECOLOGICAL MODELING; ECONOMIC IMPACT; FOOD WEB; HABITAT USE; HARVESTING; ISOTOPIC ANALYSIS; LACUSTRINE ENVIRONMENT; LAKE ECOSYSTEM; NATURE-SOCIETY RELATIONS; NICHE; NITROGEN ISOTOPE; PISCIVORE; PREDATION; PREY AVAILABILITY; STABLE ISOTOPE; TROPHIC STATUS; WATERFOWL; WILDLIFE MANAGEMENT;

CANADA;

AVES; COREGONUS ARTEDI; PERCA; PERCA FLAVESCENS; PHALACROCORACIDAE; PHALACROCORAX; PHALACROCORAX AURITUS; PUNGITIUS; PUNGITIUS PUNGITIUS;

EID: 84555219838     PISSN: 10510761     EISSN: None     Source Type: Journal    
DOI: 10.1890/10-2384.1     Document Type: Article

References (110)

1. Anderson, O. R. J., R. A. Phillips, R. F. Shore, R. A. R. McGill, R. A. McDonald, and S. Bearhop. 2009. Diet, individual specialization and breeding of brown skuas (Catharacta antarctica lonnbergi ): an investigation using stable isotopes. Polar Biology 32:27-33.
2. Barks, P. M., J. L. Doucette, and C. M. Somers. 2010. Lack of angling-sized yellow perch in a Canadian boreal lake: potential influences of growth rate, diet, and predation by double-crested cormorants. Transactions of the American Fisheries Society 139:1029-1040.
3. Bearhop, S., D. R. Thompson, S. Waldron, I. C. Russell, G. Alexander, and R. W. Furness. 1999. Stable isotopes indicate the extent of freshwater feeding by cormorants Phalacrocorax carbo shot at inland fisheries in England. Journal of Applied Ecology 36:75-84. (Pubitemid 29228563)
4. Belyea, G. Y., S. L. Maruca, J. S. Diana, P. J. Schneeberger, S. J. Scott, R. D. Clark, Jr., J. P. Ludwig, and C. L. Summer. 1997. Impact of double-crested cormorant predation on the yellow perch population in the Les Cheneaux Islands of Michigan. USDA National Wildlife Research Centre, University of Nebraska, Lincoln, Nebraska, USA.
5. Bry, C. 1996. Role of vegetation in the life cycle of pike. Pages 44-67 in J. F. Craig, editor. Pike: biology and exploitation. Chapman and Hall, London, UK.
6. Buijse, A. D., M. R. Van Eerden, W. Dekker, and W. L. T. VanDensen. 1993. Elements of a trophic model for IJsselmeer (the Netherlands), a shallow eutrophic lake. Pages 90-94 in V. Christensen and D. Pauly, editors. Trophic models of aquatic ecosystems. International Center for Living Aquatic Resources Management, Manila, Phillipines.
7. Bulgarella, M., L. C. Pizarro, F. Quintana, A. Sapoznikow, A. Gosztonyi, and L. Kuba. 2008. Diet of imperial cormorants (Phalacrocorax atriceps) and rock shags (P. magellanicus) breeding sympatrically in Patagonia, Argentina. Ornitologia Neotropical 19:553-563.
8. Bur, M. T., S. L. Tinnirello, C. D. Lovell, and J. T. Tyson. 1997. Diet of the double-crested cormorant in western Lake Erie. USDA National Wildlife Research Center Symposia Symposium on Double-Crested Cormorants: Population Status and Management Issues in the Midwest. University of Nebraska, Lincoln, Nebraska, USA.
9. Burnett, J. A. D., N. H. Ringler, B. F. Lantry, and J. H. Johnson. 2002. Double-crested cormorant predation on yellow perch in the eastern basin of Lake Ontario. Journal of Great Lakes Research 28:202-211. (Pubitemid 34696156)
10. Campbell, L. M., R. Thacker, D. Barton, D. C. G. Muir, D. Greenwood, and R. E. Hecky. 2009. Re-engineering the eastern Lake Erie littoral food web: the trophic function of non-indigenous Ponto-Caspian species. Journal of Great Lakes Research 35:224-231.
11. Campo, J. J., B. C. Thompson, J. C. Barron, R. C. Telfair II, P. Durocher, and S. Gutreuter. 1993. Diet of double-crested cormorants wintering in Texas. Journal of Field Ornithology 64:135-144.
12. Carey, M. P., and D. H. Wahl. 2010. Native fish diversity alters the effects of an invasive species on food webs. Ecology 91:2965-2974.
13. Carss, D. N., R. M. Bevan, A. Bonetti, G. Cherubini, J. Davies, D. Doherty, A. el Hili, M. J. Feltham, N. Grade, and J. P. Granadeiro. 1997. Techniques for assessing cormorant diet and food intake: towards a consensus view. Supplementi di Ricerche Biologia Selvaggina XXVI:197-230.
14. Carss, D. N., and G. R. Ekins. 2002. Further European integration: mixed sub-species colonies of great cormorants Phalacrocorax carbo in Britain-colony establishment, diet, and implications for fisheries management. Ardea 90:23-41. (Pubitemid 38300403)
15. Carss, D. N., and M. Marquiss. 1992. Cormorants and the Loch Leven trout fishery. T135c1. Report to Scottish Natural Heritage, Banchory, Kincardineshire, UK.
16. Carss, D. N., and M. Marzano, editors. 2005. Reducing the conflict between cormorants and fisheries on a pan-European scale. Summary and national overviews. Report to the European Commission, Brussels, Belgium.
17. Casaux, R. J., C. Y. DiPrinzio, M. L. Bertolin, and M. A. Tartara. 2009. Diet of the neotropic cormorant Phalacrocorax olivaceus at West Chubut, Patagonia, Argentina. Waterbirds 32:444-449.
18. Caut, S., E. Angulo, and F. Courchamp. 2009. Variation in discrimination factors (D15N and D13C): the effect of diet isotopic values and applications for diet reconstruction. Journal of Applied Ecology 46:443-453.
19. Coleman, J. T. H., M. E. Richmond, L. G. Rudstam, and P. M. Mattison. 2005. Foraging location and site fidelity of the double-crested cormorant on Oneida Lake, New York. Waterbirds 28:498-510.
20. Cooper, J. 1985. Diving patterns of cormorants Phalacrocoracidae. Ibis 128:562-570. (Pubitemid 19318816)
21. Coutin, P. C., and J. Reside. 2003. Fish predation by great cormorants, Phalacrocorax carbo carboides, in the Gippsland lakes, south-eastern Australia. Pages 196-210 in I. G. Cowx, editor. Interactions between fish and birds: implications for management. Blackwell Science, Oxford, UK.
22. Craig, J. F. 1996. Pike: biology and exploitation. Chapman and Hall, London, UK.
23. Craven, S. R., and E. Lev. 1987. Double-crested cormorants in the Apostle Islands, Wisconsin, USA: population trends, food habits, and fishery depredations. Colonial Waterbirds 10:64-71.
24. Crivelli, A. J., T. Nazirides, and H. Jerrentrup. 1996. Action plan for the pygmy cormorant (Phalacrocorax pygmeus) in Europe. Report to The European Commission and Bird Life International, Council of Europe, France.
25. Dalton, C. M., D. Ellis, and D. M. Post. 2009. The impact of double-crested cormorant (Phalacrocorax auritus) predation on anadromous alewife (Alosa pseudoharengus). Canadian Journal of Fisheries and Aquatic Sciences 66:177-186.
26. Davoren, G. K., and A. E. Burger. 1999. Differences in prey selection and behaviour during self-feeding and chick provisioning in rhinoceros auklets. Animal Behaviour 58:853-863. (Pubitemid 29478160)
27. Derby, C. E., and J. R. Lovvorn. 1997. Predation on fish by cormorants and pelicans in a cold-water river: a field and modelling study. Canadian Journal of Fisheries and Aquatic Sciences 54:1480-1493. (Pubitemid 27461849)
28. Diana, J. S. 2010. Should cormorants be controlled to enhance yellow perch in Les Cheneaux Islands? A comment on Fielder (2008). Journal of Great Lakes Research 36:190-194.
29. Dorr, B. S., T. Aderman, P. H. Butchko, and S. C. Barras. 2010. Management effects on breeding and foraging numbers and movements of double-crested cormorants in the Les Cheneaux Islands, Lake Huron, Michigan. Journal of Great Lakes Research 36:224-231.
30. Doucette, J. L., B. Wissel, and C. M. Somers. 2010. Effects of lipid extraction and lipid normalization on stable carbon and nitrogen isotope ratios in double-crested cormorants: implications for food web studies. Waterbirds 33:273-284.
31. Duffy, D. C. 1995. Why is the double-crested cormorant a problem? Insights from cormorant ecology and human sociology. Colonial Waterbirds 18:25-32.
32. Duffy, D. C., and S. Jackson. 1986. Diet studies of seabirds: a review of methods. Colonial Waterbirds 9:1-17.
33. Engstrom, H. 1998. Conflicts between cormorants (Phalacrocorax carbo L.) and fishery in Sweden. Nordic Journal of Freshwater Research 74:148-155.
34. Engstrom, H. 2001. Long term effects of cormorant predation on fish communities and fishery in a freshwater lake. Ecography 24:127-138. (Pubitemid 32635544)
35. Fielder, D. G. 2008. Examination of factors contributing to the decline of the yellow perch population and fishery in Les Cheneaux Islands, Lake Huron, with emphasis on the role of double-crested cormorants. Journal of Great Lakes Research 34:506-523.
36. France, R. L. 1995. Carbon-13 enrichment in benthic compared to planktonic algae: food web implications. Marine Ecology Progress Series 124:307-312. (Pubitemid 26463590)
37. Glahn, J. F., and K. E. Brugger. 1995. The impact of doublecrested cormorants on the Mississippi Delta catfish industry: a bioenergetics model. Colonial Waterbirds 18 (Special Publication 1):168-175.
38. Gordon, D. R. 1998. Effects of invasive, non-indigenous plant species on ecosystem processes: lessons from Florida. Ecological Applications 8:975-989. (Pubitemid 28547987)
39. Gremillet, D., G. Argentin, B. Schulte, and M. Culik. 1998. Flexible foraging techniques in breeding cormorants Phalacrocorax carbo and shags Phalacrocorax aristotelis: benthic or pelagic feeding? Ibis 140:113-119. (Pubitemid 28050444)
40. Harris, M. P., and S. Wanless. 1991. The importance of the lesser sandeel Ammodytes marinus in the diet of the shag Phalacrocorax aristotelis. Ornis Scandinavia 22:375-382.
41. Harris, M. P., and S. Wanless. 1993. The diet of shags Phalacrocorax aristotelis during the chick-rearing period assessed by three methods. Bird Study 40:135-139. (Pubitemid 24412950)
42. Hatch, J. J., and D. V. Weseloh. 1999. Double-crested Cormorant (Phalacrocorax auritus). The birds of North America online. In A. Poole, editor. Cornell Laboratory of Ornithology, Ithaca. http://bna.birds.cornell.edu/bna/ species/441i
43. Herczeg, G., A. Gonda, and J. Merilä. 2009. The social cost of shoaling covaries with predation risk in nine-spined stickleback, Pungitius pungitius, populations. Animal Behaviour 77:575-580.
44. Hobson, K. A. 1990. Stable isotopes analysis of marbled murrelets: evidence for freshwater feeding and determination of trophic level. Condor 92:897-903.
45. Hobson, K. A. 2009. Trophic interactions between cormorants and fisheries: towards a more quantitative approach using stable isotopes. Waterbirds 32:481-490.
46. Hobson, K. A., and R. G. Clark. 1992a. Assessing avian diets using stable isotopes II: factors influencing diet-tissue fractionation. Condor 94:189-197.
47. Hobson, K. A., and R. G. Clark. 1992b. Assessing avian diets using stable isotopes I: turnover of 13C in tissues. Condor 94:181-188.
48. Johnson, J. H., R. M. Ross, and R. D. McCullough. 2002. Little Galloo Island, Lake Ontario: a review of nine years of double-crested cormorant diet and fish consumption information. Journal of Great Lakes Research 28:182-192. (Pubitemid 34696154)
49. Jones, A. W., C. M. Dalton, E. S. Stowe, and D. M. Post. 2010. Contribution of declining anadromous fishes to the reproductive investment of a common piscivorous seabird, the double-crested cormorant (Phalacrocorax auritus). Auk 127:696-703.
50. Kameda, K., A. Ishida, and M. Narusue. 2003. Population increase of the great cormorant Phalacrocorax carbo hanedae in Japan: conflicts with fisheries and trees and future perspectives. Die Vogelwelt 124:27-33.
51. Keast, A. 1977. Diet overlaps and feeding relationships between the year classes in the yellow perch (Perca flavescens). Environmental Biology of Fishes 2:53-70.
52. Keller, T. 1995. Food of cormorants Phalacrocorax carbo sinensis wintering in Bavaria, Southern Germany. Ardea 83:185-192.
53. Kennedy, T. A., S. Naeem, K. M. Howe, J. M. H. Knops, D. Tilman, and P. Reich. 2002. Biodiversity as a barrier to ecological invasion. Nature 417:636-638. (Pubitemid 34614819)
54. King, D. T., J. F. Glahn, and K. J. Andrews. 1995. Daily activity budgets and movements of winter roosting doublecrested cormorants determined by biotelemetry in the delta region of Mississippi. Colonial Waterbirds 18(Special Publication 1):152-157.
55. Kreuzberg-Mukhina, E. 2008. Distribution and population trends of pygmy cormorant Phalacrocorax pygmaeus in central Asia, with particular reference to the Republic of Uzbekistan. Podoces 3:53-66.
56. Lantry, B. F., T. H. Eckert, and C. P. Schneider. 1999. The relationship between the abundance of smallmouth bass and double-crested cormorants in the eastern basin of Lake Ontario. New York State Department of Environmental Conservation Special Report. 1 February, Section 12:1-10.
57. Layman, C. A., D. A. Arrington, C. G. Montana, and D. M. Post. 2007. Can stable isotope ratios provide for communitywide measures of trophic structure? Ecology 88:42-48. (Pubitemid 46596820)
58. Lehikoinen, A. 2005. Prey-switching and diet of the great cormorant during the breeding season in the Gulf of Finland. Waterbirds 28:511-515.
59. Linn, I. J., and K. L. I. Campbell. 1992. Interactions between white-breasted cormorants Phalacrocorax carbo (Aves: Phalacrocoracidae) and the fisheries of Lake Malawi. Journal of Applied Ecology 29:619-634. (Pubitemid 23399808)
60. Liordos, V., and V. Goutner. 2009. Sexual differences in the diet of great cormorants Phalacrocorax carbo sinensis wintering in Greece. European Journal of Wildlife Research 55:301-308.
61. Luek, A., G. E. Morgan, B. Wissel, J. M. Gunn, and C. W. Ramcharan. 2010. Rapid and unexpected effects of piscivore introduction on trophic position and diet of perch (Perca flavescens) in lakes recovering from acidification and metal contamination. Freshwater Biology 55:1616-1627.
62. Madenjian, C. P., and S. W. Gabrey. 1995. Waterbird predation on fish in western Lake Erie: a bioenergetics model application. Condor 97:141-153.
63. McCullough, R. D., J. F. Farquhar, and I. M. Mazzocchi. 2007. Cormorant management activities in Lake Ontario's eastern basin. Bureau of Fisheries, Bureau of Wildlife. New York State Department of Environmental Conservation Special Report. Section 13:1-8.
64. McGregor, A. M. 2009. Double-crested cormorant (Phalacrocorax auritus) monitoring and management in Lac La Biche, Alberta: 2009 annual summary. Sustainable Resource Development, Fish and Wildlife Division, Edmonton, Alberta, Canada.
65. McIntyre, J. K., D. A. Beauchamp, M. M. Mazur, and N. C. Overman. 2006. Ontogenetic trophic interactions and benthopelagic coupling in Lake Washington: evidence from stable isotopes and diet analysis. Transactions of the American Fisheries Society 135:1312-1328. (Pubitemid 46667786)
66. McKay, H. V., K. A. Robinson, D. N. Carss, and D. Parrott. 2003. The limitations of pellet analysis in the study of cormorant Phalacrocorax spp. diet. Vogelwelt 124:227-236.
67. Mersmann, T. J., D. A. Beuhler, J. D. Fraser, and J. K. D. Seegar. 1992. Assessing bias in studies of bald eagle food habits. Journal of Wildlife Management 56:73-78.
68. Milne, S. W., B. J. Shuter, and W. G. Sprules. 2005. The schooling and foraging ecology of lake herring (Coregonus artedi ) in Lake Opeongo, Ontario, Canada. Canadian Journal of Fisheries and Aquatic Sciences 62:1210-1218. (Pubitemid 41499781)
69. Minagawa, M., and E. Wada. 1984. Stepwise enrichment of 15N along food chains: further evidence and the relation between d15N and animal age. Geochimica et Cosmochimica Acta 48:1135-1140.
70. Mizutani, H., Y. Kabaya, and E. Wada. 1991. Nitrogen and carbon isotope compositions relate linearly in cormorant tissues and its diet. Isotopenpraxis 27:166-168.
71. Nelson, J. B. 2005. Pelicans, cormorants, and their relatives. Oxford University Press, Oxford, UK.
72. Nemtzov, S. C. 2008. Israel-Ukraine cooperation for experimental management of a shared overabundant population of great cormorants (Phalacrocorax carbo). Proceedings of the 23rd Vertebrate Pest Conference 108-112. University of California, Davis, California, USA.
73. Neuman, J., D. L. Pearl, P. J. Ewins, R. Black, D. V. Weseloh, M. Pike, and K. Karwowski. 1997. Spatial and temporal variation in the diet of double-crested cormorants (Phalacrocorax auritus) breeding on the lower Great Lakes in the early 1990s. Canadian Journal Fisheries and Aquatic Sciences 54:1569-1584. (Pubitemid 27461858)
74. Newsome, S. D., M. T. Tinker, D. H. Monson, O. T. Oftedal, K. Ralls, M. M. Staedler, M. L. Fogel, and J. A. Estes. 2009. Using stable isotopes to investigate individual diet specialization in California sea otters (Enhydra lutris nereis). Ecology 90:961-974.
75. Noordhuis, R., E. C. L. Marteijn, R. Noordhuis, S. Dirksen, and T. J. Boudewijn. 1997. The trophic role of cormorants Phalacrocorax carbo in freshwater ecosystems in the Netherlands during the non-breeding period. Ekologia Polska 45:249-262. (Pubitemid 127679565)
76. Ogden, L. J. E., K. A. Hobson, and D. B. Lank. 2004. Blood isotopic (d13C and d15N) turnover and diet-tissue fractionation factors in captive dunlin (Calidris alpina pacifica). Auk 121:170-177. (Pubitemid 38215568)
77. Parnell, A. C., R. Inger, S. Bearhop, and A. L. Jackson. 2010. Source partitioning using stable isotopes: coping with too much variation. PLoS ONE 5:e9672.
78. Perga, M.-E., and J. Grey. 2010. Laboratory measures of isotope discrimination factors: comments on Caut, Angulo and Courchamp (2008, 2009). Journal of Applied Ecology 47:942-947.
79. Peterson, B. J., and B. Fry. 1987. Stable isotopes in ecosystem studies. Annual Review of Ecology and Systematics 18:293-320.
80. Phillips, D. L., and J. W. Gregg. 2003. Source partitioning using stable isotopes: coping with too many sources. Oecologia 136:261-269. (Pubitemid 36933259)
81. Post, D. M. 2002. Using stable isotopes to estimate trophic position: models, methods, and assumptions. Ecology 83:703-718. (Pubitemid 36524158)
82. Post, D. M., C. A. Layman, D. A. Arrington, G. Takimoto, J. Quattrochi, and C. G. Montana. 2007. Getting to the fat of the matter: models, methods, and assumptions for dealing with lipids in stable isotope analyses. Oecologia 152:179-189. (Pubitemid 46640011)
83. Punta, G. E., J. R. C. Saravia, and P. M. Yorio. 1993. The diet and foraging behaviour of two Patagonian cormorants. Marine Ornithology 21:27-36.
84. Ross, R. M., and J. H. Johnson. 1995. Seasonal and annual changes in the diet of double-crested cormorants: implications for Lake Ontario's fishery. Great Lakes Research Review 2:1-9.
85. Rudstam, L. G., A. J. VanDeValk, C. M. Adams, J. T. H. Coleman, J. L. Forney, and M. E. Richmond. 2004. Cormorant predation and the population dynamics of walleye and yellow perch in Oneida Lake. Ecological Applications 14:149-163. (Pubitemid 38231602)
86. Russell, I. C., A. C. Cook, D. A. Kinsman, M. J. Ives, and N. J. Lower. 2003. Stomach content analysis of great cormorants (Phalacrocorax carbo) at some different fishery types in England and Wales. Vogelwelt 124 (Supplement):255-259.
87. Sakai, A. K., F. W. Allendorf, J. S. Holt, D. M. Lodge, J. Molofsky, K. A. With, S. Baughman, R. J. Cabin, J. E. Cohen, and N. C. Ellstrand. 2001. The population biology of invasive species. Annual Review of Ecology and Systematics 32:305-332. (Pubitemid 34043164)
88. Seefelt, N. E., and J. C. Gillingham. 2008. Bioenergetics and prey consumption of breeding double-crested cormorants in the Beaver Archipelago, Northern Lake Michigan. Journal of Great Lakes Research 34:122-133. (Pubitemid 351555523)
89. Somers, C. M., V. A. Kjoss, F. A. Leighton, and D. Fransden. 2010. American white pelicans and double-crested cormorants in SK: population trends over five decades. Blue Jay 68:75-86.
90. Somers, C. M., M. N. Lozer, V. A. Kjoss, and J. S. Quinn. 2003. The invasive round goby (Neogobius melanostomus) in the diet of nestling double-crested cormorants (Phalacrocorax auritus) in Hamilton Harbour, Lake Ontario. Journal of Great Lakes Research 29:392-399. (Pubitemid 37269136)
91. Sprinthall, R. 2003. Basic statistical analysis. Pearson Education Group, Boston, Massachusetts, USA.
92. Stewart, D. C., S. J. Middlemas, W. R. Gardiner, S. Mackay, and J. D. Armstrong. 2005. Diet and prey selection of cormorants (Phalacrocorax carbo) at Loch Leven, a major stocked trout fishery. Journal of Zoology 267:191-201. (Pubitemid 41437754)
93. Suter, W. 1995. Are cormorants Phalacrocorax carbo wintering in Switzerland approaching carrying capacity? An analysis of increase patterns and habitat choice. Ardea 83:255-266. (Pubitemid 26451440)
94. Sydeman, W. J., K. A. Hobson, P. Pyle, and E. B. McLaren. 1997. Trophic relationships among seabirds in central California: combined stable isotope and conventional dietary approach. Condor 99:327-336. (Pubitemid 27222091)
95. Takahashi, T., K. Kameda, M. Kawamura, and T. Nakajima. 2006. Food habits of great cormorant Phalacrocorax carbo hanedae at Lake Biwa, Japan, with special reference to ayu Plecoglossus altivelis altivelis. Fisheries Science 72:477-484. (Pubitemid 43873599)
96. Tasker, M. L., C. J. Camphuysen, J. Cooper, S. Garthe, W. A. Montevecchi, and S. J. M. Blaber. 2000. The impacts of fishing on marine birds. ICES Journal of Marine Science 57:531-547.
97. C analysis of diet. Oecologia 57:32-37. (Pubitemid 15275016)
98. Trayler, K. M., D. J. Brothers, R. D. Wooller, and I. C. Potter. 1989. Opportunistic foraging by three species of cormorants in an Australian estuary. Journal of Zoology 218:87-98. (Pubitemid 20422200)
99. Turner, T. F., M. L. Collyer, and T. J. Krabbenhoft. 2010. A general hypothesis-testing framework for stable isotope ratios in ecological studies. Ecology 91:2227-2233.
100. N) and literature dietary data. Canadian Journal of Fisheries and Aquatic Sciences 54:1142-1158.
101. C trophic fractionation: implications for aquatic food web studies. Limnology and Oceanography 46:2061-2066. (Pubitemid 34009955)
102. VanderZanden, M. J., and Y. Vadeboncoeur. 2002. Fishes as integrators of benthic and pelagic food webs in lakes. Ecology 83:2152-2161. (Pubitemid 36524754)
103. VanDeValk, A. J., C. M. Adams, L. G. Rudstam, J. L. Forney, T. E. Brooking, M. A. Gerken, B. P. Young, and J. T. Hooper. 2002. Comparison of angler and cormorant harvest of walleye and yellow perch in Oneida Lake, New York. Transactions of the American Fisheries Society 131:27-39. (Pubitemid 34134767)
104. Van Dobben, W. H. 1952. The food of the cormorant in the Netherlands. Ardea 40:1-63.
105. Veldkamp, R. 1995. Diet of cormorants Phalacrocorax carbo sinensis at Wanneperveen, the Netherlands, with special reference to bream Abramis brama. Ardea 83:143-155. (Pubitemid 26451387)
106. Weis, J. S. 2010. The role of behavior in the success of invasive crustaceans. Marine and Freshwater Behaviour and Physiology 43:83-98.
107. Wires, L. R., F. J. Cuthbert, D. R. Trexel, and A. R. Joshi. 2001. Status of the double-crested cormorant (Phalacrocorax auritus) in North America. Final Report to United States Fish and Wildlife Service. University of Minnesota, St. Paul, Minnesota, USA.
108. Woollhead, J. 1994. Birds in the trophic web of Lake Esrom, Denmark. Hydrobiologia 279-280:29-38.
109. Yule, D. L., J. V. Adams, J. D. Stockwell, and O. T. Gorman. 2008. Factors affecting bottom trawl catches: implications for monitoring the fishes of Lake Superior. North American Journal of Fisheries Management 28:109-122. (Pubitemid 351520397)
110. Žydelis, R., and A. Kontautas. 2008. Piscivorous birds as top predators and fishery competitors in the lagoon system. Hydrobiologia 611:45-54.