Search Results - "Piatt, J F"

Dynamics of Food Availability, Body Condition and Physiological Stress Response in Breeding Black-Legged Kittiwakes by Kitaysky, A. S., Wingfield, J. C., Piatt, J. F.

“…1. The seasonal dynamics of body condition (BC), circulating corticosterone levels (baseline, BL) and the adrenocortical response to acute stress (SR) were…”
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Community reorganization in the Gulf of Alaska following ocean climate regime shift by Anderson, Paul J., Piatt, John F.

“…A shift in ocean climate during the late 1970s triggered a reorganization of community structure in the Gulf of Alaska ecosystem, as evidenced in changing…”
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Population genetic structure in Atlantic and Pacific Ocean common murres (Uria aalge): natural replicate tests of post-Pleistocene evolution by MORRIS-POCOCK, J.A, TAYLOR, S.A, BIRT, T.P, DAMUS, M, PIATT, J.F, WARHEIT, K.I, FRIESEN, V.L

“…Understanding the factors that influence population differentiation in temperate taxa can be difficult because the signatures of both historic and contemporary…”
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Using Stable Isotopes to Determine Seabird Trophic Relationships by Hobson, Keith A., Piatt, John F., Pitocchelli, Jay

“…1. The stable isotopes of nitrogen (delta 15N) and carbon (delta 13C) were analysed in 22 species of marine birds from coastal waters of the northeast Pacific…”
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Stress hormones link food availability and population processes in seabirds by Kitaysky, AS, Piatt, JF, Wingfield, JC

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Murres, capelin and ocean climate: inter-annual associations across a decadal shift by Regular, P. M., Shuhood, F., Power, T., Montevecchi, W. A., Robertson, G. J., Ballam, D., Piatt, J. F., Nakashima, B.

“…To ensure energy demands for reproduction are met, it is essential that marine birds breed during periods of peak food availability. We examined associations…”
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African Penguins and Localized Fisheries Management: Response to Butterworth and Ross-Gillespie by Sydeman, W J, Hunt, G L, Pikitch, E K, Parrish, J K, Piatt, J F, Boersma, P D, Kaufman, L, Anderson, D W, Thompson, S A, Sherley, R B

“…Abstract We present a response to Butterworth and Ross-Gillespie's (2022) comment on our perspectives on how forage fish fisheries are impacting the endangered…”
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The adrenocortical stress-response of Black-legged Kittiwake chicks in relation to dietary restrictions by Kitaysky, A. S., Piatt, J. F., Wingfield, J. C., Romano, M.

“…In this study we examined hormonal responses of Black-legged Kittiwake (Rissa tridactyla) chicks to experimental variations in energy content and nutritional…”
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Extreme reduction in nutritional value of a key forage fish during the Pacific marine heatwave of 2014–2016 by von Biela, Vanessa R., Arimitsu, Mayumi L., Piatt, John F., Heflin, Brielle, Schoen, Sarah K., Trowbridge, Jannelle L., Clawson, Chelsea M.

“…Pacific sand lance Ammodytes personatus are a key forage fish in the North Pacific for many species of salmon, groundfish, seabirds, and marine mammals and…”
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Maturation, fecundity, and intertidal spawning of Pacific sand lance in the northern Gulf of Alaska by Robards, M. D., Piatt, J. F., Rose, G. A.

“…Pacific sand lance Ammodytes hexapterus in Kachemak Bay, Alaska, showed no sexual dimorphism in length‐to‐weight (gonad‐free) ratio or length‐at‐age…”
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Phylogenetic relationships within the Alcidae (Charadriiformes: Aves) inferred from total molecular evidence by Friesen, V L, Baker, A J, Piatt, J F

“…The Alcidae is a unique assemblage of Northern Hemisphere seabirds that forage by "flying" underwater. Despite obvious affinities among the species, their…”
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Nearshore Fish Distributions in an Alaskan Estuary in Relation to Stratification, Temperature and Salinity by Abookire, A.A., Piatt, J.F., Robards, M.D.

“…Fish were sampled with beach seines and small-meshed beam trawls in nearshore (<1km) and shallow (<25m) habitats on the southern coast of Kachemak Bay, Cook…”
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Influence of glacier runoff on ecosystem structure in Gulf of Alaska fjords by Arimitsu, Mayumi L., Piatt, John F., Mueter, Franz

“…To better understand the influence of glacier runoff on fjord ecosystems, we sampled oceanographic conditions, nutrients, zooplankton, forage fish and seabirds…”
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Benefits and costs of increased levels of corticosterone in seabird chicks by Kitaysky, A.S, Kitaiskaia, E.V, Piatt, J.F, Wingfield, J.C

“…Seabird chicks respond to food shortages by increasing corticosterone (cort) secretion, which is probably associated with fitness benefits and costs. To…”
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INVESTIGATING TROPHIC RELATIONSHIPS OF PINNIPEDS IN ALASKA AND WASHINGTON USING STABLE ISOTOPE RATIOS OF NITROGEN AND CARBON by Hobson, Keith A., Sease, John L., Merrick, Richard L., Piatt, John F.

“…We measured stable‐nitrogen (δ15N) and stable‐carbon (δ13C) isotope ratios in muscle and hair from 7 northern fur seals (Callorhinus ursinus) from the Pribilof…”
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Seabirds as indicators of marine food supplies: Cairns revisited by Piatt, John F., Harding, Ann M. A., Shultz, Michael, Speckman, Suzann G., Van Pelt, Thomas I., Drew, Gary S., Kettle, Arthur B.

“…In his seminal paper about using seabirds as indicators of marine food supplies, Cairns (1987, Biol Oceanogr 5:261–271) predicted that (1) parameters of…”
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Population genetic structure and conservation of marbled murrelets (Brachyramphus marmoratus) by Friesen, V L, Birt, T P, Piatt, J F, Golightly, R T, Newman, SH, Hebert, P N, Congdon, B C, Gissing, G

“…Marbled murrelets (Brachyramphus marmoratus) are coastal seabirds that nest from California to the Aleutian Islands. They are declining and considered…”
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Changes in proximate composition and somatic energy content for Pacific sand lance ( Ammodytes hexapterus) from Kachemak Bay, Alaska relative to maturity and season by Robards, Martin D, Anthony, Jill A, Rose, George A, Piatt, John F

“…Mean dry-weight energy values of adult Pacific sand lance ( Ammodytes hexapterus) peaked in spring and early summer (20.91 kJg −1 for males, 21.08 kJg −1 for…”
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Time-Budgets of Common Murres at a Declining and Increasing Colony in Alaska by Zador, Stephani G., Piatt, John F.

“…We observed Common Murres (Uria aalge) at two breeding sites in lower Cook Inlet, Alaska, to determine whether food availability was reflected in their…”
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Threshold foraging behavior of baleen whales by Piatt, John F., Methven, David A.

“…We conducted hydroacoustic surveys for capelin Mallotus villosus in Witless Bay, Newfoundland, Canada, on 61 days during the summers of 1983 to 1985. On 32 of…”
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