Publications
Anderson CD, DD Roby, and K Collis. 2004. Foraging patterns of male and female
double-crested cormorants nesting in the Columbia River estuary. Canadian Journal of
Zoology 82:541-554.
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Anderson CD., DD Roby, and K Collis. 2004. Conservation implications of the large
colony of double-crested cormorants on East Sand Island, Columbia River estuary,
Oregon, USA. Waterbirds 27:155-160.
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Anderson SK, DD Roby, DE Lyons, and K Collis. 2007. Relationship of Caspian tern
foraging ecology to nesting success in the Columbia River estuary, Oregon, USA.
Estuarine, Coastal and Shelf Science 73:447-456.
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Anderson SK, DD Roby, DE Lyons, and K Collis. 2005. Effects of nest density, location,
and timing on breeding success of Caspian terns Waterbirds 73:447-456.
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Anthony JA, DD Roby, and KR Turco. 2000. Lipid content and energy density of
forage fishes from the northern Gulf of Alaska. Journal of Experimental
Marine Biology and Ecology 248:53-78.
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Antolos M, DD Roby, DE Lyons, SK Anderson and K Collis. 2006. Effects of nest
location and timing on breeding success of Caspian terns. Waterbirds 29(4): 465-472.
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Antolos M, DD Roby, DE Lyons, K Collis, AF Evans, M Hawbecker, and BA Ryan.
2005. Caspian tern predation on juvenile salmonids in the Mid-Columbia River.
Transactionsof the American Fisheries Society 134:466-480.
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Antolos, M., DD Roby, and K Collis. 2004. Breeding ecology of Caspian terns at
colonies on the Columbia Plateau. Northwest Science 78:303-312.
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Collis K, DD Roby, DP Craig, S Adamany, JY Adkins, and DE Lyons. 2002.
Colony size and diet composition of piscivorous waterbirds on the lower
Columbia River: Implications for losses of juvenile salmonids to avian
predation. Transactions of the American Fisheries Society 131: 537-550.
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Collis K, DD Roby, CW Thompson, DE Lyons and M Tirhi. 2002. Barges as
temporary breeding sites for caspian terns: Assessing potential sites for colony
restoration. Wildlife Society Bulletin 30(4): 1-10.
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Collis K, DD Roby, DP Craig, BA Ryan and RA Ledgerwood. 2001. Colonial
waterbird predation on juvenile salmonids tagged with passive interference
transponders in the Columbia River estuary: Vulnerability of different salmonid
species, stocks and rearing types. Transactions of the American Fisheries Society
130: 385-396.
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Fischer, K.N., R.M. Suryan, D.D. Roby, and G.R. Balogh. 2009. Post-breeding season
distribution of black-footed and Laysan albatrosses satellite-tagged in Alaska:
Inter-specific differences in spatial overlap with North Pacific fisheries. Biological
Conservation 142: 751-760.
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Gall AE, DD Roby, DB Irons, IC Rose. 2006. Differential response in chick survival
to diet in least and crested auklets. Marine Ecology Progress Series 308:279-291.
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Jodice PGR, DD Roby, RM Suryan, DB Irons, KR Turco, ED Brown, JF Thedinga,
and GH Visser. 2006. Increased energy expenditure by a seabird in response to higher
food abundance. Marine Ecology Progress Series 306:283-293.
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Jodice PGR, DD Roby, KR Turco, RM Suryan, DB Irons, JF Piatt, MT Shultz, DG Roseneau,
AB Kettle, JA Anthony. 2006. Assessing the nutritional stress hypothesis:
the relative influence of diet quantity and quality on seabird productivity. Marine Ecology
Progress Series 325:267-279.
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Jodice PGR, DD Roby, RM Suryan, DB Irons, AM Kaufman, KR Turco, and GH Visser.
2003. Variation in energy expenditure among Black-Legged Kittiwakes: Effects of
activity-specific metabolic rates and activity budgets. Physiological and Biochemical
Zoology 76(3), 375-388.
Jodice PGR, DD Roby, M Antolos, DE Lyons, DJ Rizzolo, SK Wright,CD Anderson,
SK Anderson, SK Nelson, AE Gall, and L Wennerberg. 2003. Book review:
Biology of Marine Birds. EA Schreiber and J Burger, Eds. 2002. CRC Press,
Boca Raton, FL. Auk 120:240-245.
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Jodice PGR, DD Roby, SA Hatch, VA Gill, RB Lanctot, and GH Visser. 2002. Does
food availability affect energy expenditure rates of nesting seabirds?:
A supplemental-feeding experiment with black-legged kittiwakes (Rissa tridactyla).
Canadian Journal of Zoology 80:214-222.
Lyons DE, DD Roby, and K Collis. 2007. Foraging patterns of Caspian terns and
double-crested cormorants in the Columbia River estuary. Northwest Science 81:91-103.
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Columbia River estuary, USA. Waterbirds 28(3):280-291.
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Palmer, AG, DL Nordmeyer, and DD Roby. 2001. Factors influencing nest attendance
and time-activity budgets of peregrine falcons in interior Alaska.
Arctic 54:105-114.
Roby DD, K Collis and DE Lyons. 2003. Conservation and Management for Fish-Eating
Birds and Endangered Salmon. USDA Forest Service General Technical Report PSW-GTR-191.
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Roby DD, K Collis, DE Lyons, DP Craig, and M Antolos. 2003. Caspian Tern
Sterna caspia. Pp. In: Birds of Oregon: A General Reference. DB Marshall,
MG Hunter, and AL Contreras, Eds. Oregon State University Press, Corvallis.
Roby DD, DE Lyons, DP Craig, K Collis, and GH Visser. 2003. Quantifying the Effect of
Predators on Endangered Species Using a Bioenergetics Approach: Caspian Terns and
Juvenile Salmonids in the Columbia River Estuary. Canadian Journal of Zoology 81: 250-263.
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Roby DD, K Collis, DE Lyons, DP Craig, JY Adkins, AM Myers, and RM Suryan. 2002.
Effects of Colony Relocation on Diet and Productivity of Caspian Terns.
Journal of Wildlife Management 66(3): 662-673.
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Romano MD, JF Piatt, DD Roby. 2006. Testing the junk food hypothesis on marine birds:
effects of prey type on growth and development. Waterbirds 29(4):407-414.
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Sheffield LM, AE Gall, DD Roby, DB Irons, and KM Dugger. 2006. Monitoring
planktivorous seabird populations: Validating surface counts of crevice-nesting auklets
using mark-resight techniques. Canadian Journal of Zoology 84:846-854.
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Suryan RM, DB Irons, ED Brown, PGR Jodice, and DD Roby. 2006.
Site-specific effects on productivity of an upper trophic-level marine predator:
Bottom-up, top-down, and mismatch effects on reproduction in a colonial seabird.
Progress in Oceanography 68:303-328.
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Suryan RM, DP Craig, DD Roby, ND Chelgren, K Collis, WD Shuford, and D.E. Lyons. 2004.
Redistribution and growth of the Caspian Tern population in the Pacific coast region of North
America, 1981-2000. The Condor 106(4), 777-790.
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Suryan RM, DB Irons, M Kaufman, J Benson, PGR Jodice, DD Roby and ED Brown.
2002. Short-term fluctuations in forage fish availability and the effect on prey selection
and brood-rearing in the black-legged kittiwake Rissa tridactyla. Marine Ecology Progress
Series 236: 273-287.
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Wright SK, DD Roby, and RG Anthony. 2007. Responses of California brown pelicans to
disturbances at a large Oregon roost. Waterbirds 30:479-487.
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