Search Results - "TAKEKAWA, J. Y"

The roller coaster flight strategy of bar-headed geese conserves energy during Himalayan migrations by Bishop, C. M., Spivey, R. J., Hawkes, L. A., Batbayar, N., Chua, B., Frappell, P. B., Milsom, W. K., Natsagdorj, T., Newman, S. H., Scott, G. R., Takekawa, J. Y., Wikelski, M., Butler, P. J.

“…The physiological and biomechanical requirements of flight at high altitude have been the subject of much interest. Here, we uncover a steep relation between…”
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Will inundation and salinity levels associated with projected sea level rise reduce the survival, growth, and reproductive capacity of Sarcocornia pacifica (pickleweed)? by Woo, I., Takekawa, J.Y.

“…► We studied S. pacifica response to inundation and salinity in a 4×4 experiment. ► Overall adult survival was 99% and 56% for seedlings. ► Increased…”
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Trophic structure and avian communities across a salinity gradient in evaporation ponds of the San Francisco Bay estuary by TAKEKAWA, J. Y, MILES, A. K, SCHOELLHAMER, D. H, ATHEARN, N. D, SAIKI, M. K, DUFFY, W. D, KLEINSCHMIDT, S, SHELLENBARGER, G. G, JANNUSCH, C. A

“…Issue Title: Theme: Limnology and Aquatic Birds: Proceedings of the Fourth Conference Working Group on Aquatic Birds of Societas Internationalis Limnologiae…”
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Relating body condition to inorganic contaminant concentrations of diving ducks wintering in coastal California by TAKEKAWA, J. Y, WAINWRIGHT-DE LA CRUZ, S. E, HOTHEM, R. L, YEE, J

“…In wild waterfowl, poor winter body condition may negatively affect migration, survival, and reproduction. Environmental contaminants have been shown to…”
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Dietary flexibility in three representative waterbirds across salinity and depth gradients in salt ponds of San Francisco Bay by Takekawa, J. Y, Miles, A. K, Tsao-Melcer, D. C, Schoellhamer, D. H, Fregien, S, Athearn, N. D

“…Salt evaporation ponds have existed in San Francisco Bay, California, for more than a century. In the past decade, most of the salt ponds have been retired…”
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The paradox of extreme high-altitude migration in bar-headed geese Anser indicus by Hawkes, L. A., Balachandran, S., Batbayar, N., Butler, P. J., Chua, B., Douglas, D. C., Frappell, P. B., Hou, Y., Milsom, W. K., Newman, S. H., Prosser, D. J., Sathiyaselvam, P., Scott, G. R., Takekawa, J. Y., Natsagdorj, T., Wikelski, M., Witt, M. J., Yan, B., Bishop, C. M.

“…Bar-headed geese are renowned for migratory flights at extremely high altitudes over the world's tallest mountains, the Himalayas, where partial pressure of…”
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Spatial and overwinter changes in clam populations of San Pablo Bay, a semiarid estuary with highly variable freshwater inflow by Poulton, V.K., Lovvorn, J.R., Takekawa, J.Y.

“…In many estuaries worldwide, climate trends together with human diversion of fresh water have dramatically impacted the benthos. Such impacts have sometimes…”
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Sea-level rise and refuge habitats for tidal marsh species: Can artificial islands save the California Ridgway's rail? by Overton, C.T., Takekawa, J.Y., Casazza, M.L., Bui, T.D., Holyoak, M., Strong, D.R.

“…Terrestrial species living in intertidal habitats experience refuge limitation during periods of tidal inundation, which may be exacerbated by seasonal…”
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Contaminant profiles of two species of shorebirds foraging together at two neighboring sites in South San Francisco Bay, California by HUI, Clifford A, TAKEKAWA, John Y, WARNOCK, Sarah E

“…The San Francisco Bay estuary is used by over one million shorebirds during spring migration and is home to several hundred thousand during the winter. Most…”
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Habitat Preferences of Wintering Shorebirds in a Temporally Changing Environment: Western Sandpipers in the San Francisco Bay Estuary by Warnock, Sarah E., Takekawa, John Y.

“…We examined habitat preferences of 106 radio-marked Western Sandpipers (Calidris mauri) in the San Francisco Bay estuary during winter and spring at two…”
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Geographic Variation in Migratory Behavior of Greater White-Fronted Geese (Anser albifrons) by Ely, Craig R., Takekawa, John Y.

“…We studied the migration and winter distribution of adult Greater White-fronted Geese (Anser albifrons frontalis) radio-marked on the Yukon-Kuskokwim Delta…”
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Trace Element Concentrations in Two Subpopulations of Lesser Snow Geese from Wrangel Island, Russia by Hui, A, Takekawa, JY, Baranyuk, VV, Litvin, KV

“…Lesser snow geese (Anser c. caerulescens) from the Wrangel Island, Russia breeding colony spend the winter in two widely separated areas: the northern…”
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Distribution of Xantus' Murrelet Synthliboramphus hypoleucus at sea in the Southern California Bight, 1995-97 by WHITWORTH, DARRELL L., TAKEKAWA, JOHN Y., CARTER, HARRY R., NEWMAN, SCOTT H., KEENEY, THOMAS W., KELLY, PAUL R.

“…We radiomarked 153 Xantus' Murrelets Synthliboramphus hypoleucus captured at sea near Santa Barbara Island (SBI), the largest murrelet colony in the California…”
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Genetic Differentiation between Wintering Populations of Lesser Snow Geese Nesting on Wrangel Island by Sergei B. Kuznetsov, Baranyuk, Vasily V., Takekawa, John Y.

“…Kuznetsov et al examine the genetic differentiation between two populations of wintering Lesser Snow Geese…”
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Morphological Differences in Pacific Coast Populations of Greater White-Fronted Geese by Orthmeyer, Dennis L., Takekawa, John Y., Ely, Craig R., Wege, Michael L., Newton, Wesley E.

“…We examined morphological relationships of three Pacific coast populations of Greater White-fronted Geese (Anser albifrons). Adult geese were captured and…”
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Avian communities in baylands and artificial salt evaporation ponds of the San Francisco Bay estuary by TAKEKAWA, John Y, LU, Corinna T, PRATT, Ruth T

“…San Francisco Bay wetlands, seasonal and tidal marshes between the historic low and high tide lines, are now highly fragmented because of development during…”
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Management and Conservation of San Francisco Bay Salt Ponds: Effects of Pond Salinity, Area, Tide, and Season on Pacific Flyway Waterbirds by Warnock, Nils, Page, Gary W., Ruhlen, Tamiko D., Nur, Nadav, Takekawa, John Y., Hanson, Janet T.

“…Throughout the world, coastal salt ponds provide habitat for large numbers and diversities of waterbirds. San Francisco Bay contains the most important coastal…”
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Spring Migration of Northern Pintails from Texas and New Mexico, USA by Haukos, David A, Miller, Michael R, Orthmeyer, Dennis L, Takekawa, John Y, Fleskes, Joseph P, Casazza, Michael L, Perry, William M, Moon, Jena A

“…We used satellite transmitters (platform transmitting terminals or PTTs) during 2002 and 2003 to document spring migration timing, routes, stopover sites, and…”
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Migration Behavior of Tundra Swans from the Yukon-Kuskokwim Delta, Alaska by Ely, Craig R., Douglas, David C., Fowler, Ada C., Babcock, Christopher A., Derksen, Dirk V., J. Y. Takekawa

“…Tundra Swans (Cygnus columbianus columbianus) fitted with satellite transmitters (PTTs) on the outer coast of the Yukon-Kuskokwim (Y-K) Delta, Alaska, migrated…”
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Subcutaneous Anchor Attachment Increases Retention of Radio Transmitters on Xantus' and Marbled Murrelets (Conector Subcutáneo de Tipo Ancla Aumenta la Retención de Radiotransmisores en Synthliboramphus hypoleucus y Brachyramphus marmoratus) by Newman, Scott H., Takekawa, John Y., Whitworth, Darrell L., Burkett, Esther E.

“…We modified a subcutaneous anchor attachment and achieved transmitter retention times that exceeded those reported previously for other attachments used on…”
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