Search Results - "KA Bjorndal"

Trophic ecology of a green turtle breeding population by Vander Zanden, Hannah B., Arthur, Karen E., Bolten, Alan B., Popp, Brian N., Lagueux, Cynthia J., Harrison, Emma, Campbell, Cathi L., Bjorndal, Karen A.

“…While many migratory marine organisms converge at breeding areas, identifying foraging strategies away from these reproductive sites can be challenging. Adult…”
Get full text

Twenty-Six Years of Green Turtle Nesting at Tortuguero, Costa Rica: An Encouraging Trend by Bjorndal, Karen A., Wetherall, Jerry A., Bolten, Alan B., Mortimer, Jeanne A.

“…The green turtle (Chelonia mydas) population that nests at Tortuguero, Costa Rica, is the largest in the Atlantic by at least an order of magnitude. Surveys to…”
Get full text

Reproductive output, foraging destinations, and isotopic niche of olive ridley and loggerhead sea turtles, and their hybrids, in Brazil by Soares, LS, Bjorndal, KA, Bolten, AB, Wayne, ML, Castilhos, JC, Weber, MI, López-Mendilaharsu, M, Marcovaldi, MA, Vilaça, ST, Naro-Maciel, E

“…Hybridization is a fundamental evolutionary and ecological process with significant conservation ramifications. Sea turtle hybridization occurs at unusually…”
Get full text

Variation in age and size at sexual maturity in Kemp’s ridley sea turtles by KA Bjorndal, J Parsons, W Mustin, AB Bolten

“…Age at sexual maturity (AgeSM) is one of the most serious demographic data gaps for sea turtle populations. Better estimates of AgeSM and associated variance…”
Get full text

Hatching and emergence success in green turtle Chelonia mydas nests in the Galápagos Islands by P Zárate, KA Bjorndal, M Parra, PH Dutton, JA Seminoff, AB Bolten

“…The interactions of numerous abiotic and biotic factors experienced by sea turtle embryos during incubation affect their survival. In this study we determined…”
Get full text

Significance of anecdotes for historical perspective: black bear predation on sea turtle eggs by Bjorndal, KA

“…In his April 2010 TED talk on the shifting baseline syndrome, Daniel Pauly warned us that ‘we transform the world, but we don’t remember it.’ This lapse is the…”
Get full text

Evaluation of scute thickness to infer life history records in the carapace of green and loggerhead turtles by MC López-Castro, KA Bjorndal, AB Bolten

“…Use of scute in biochemical studies to infer ontogenetic changes of habitat and diet in sea turtles is becoming more frequent because scute is an inert tissue…”
Get full text

Somatic growth model of juvenile loggerhead sea turtles Caretta caretta : duration of pelagic stage by BJORNDAL, K. A, BOLTEN, A. B, MARTINS, H. R

“…The pelagic juvenile stage of sea turtles is poorly studied. We present a growth model and estimates for duration of the pelagic juvenile stage for loggerhead…”
Get full text

Expanded mitochondrial control region sequences increase resolution of stock structure among North Atlantic loggerhead turtle rookeries by Shamblin, BM, Bolten, AB, Bjorndal, KA, Dutton, PH, Nielsen, JT, Abreu-Grobois, FA, Reich, KJ, Witherington, BE, Bagley, DA, Ehrhart, LM, Tucker, AD, Addison, DS, Arenas, A, Johnson, C, Carthy, RR, Lamont, MM, Dodd, MG, Gaines, MS, LaCasella, E, Nairn, CJ

Get full text

Green turtle somatic growth dynamics: distributional regression reveals effects of differential emigration by Bjorndal, Karen A., Bolten, Alan B., Chaloupka, Milani

“…Because somatic growth is an integrated response to variables on individual, population and ecosystem levels, growth rates have been used as indicators of…”
Get full text

Complementary skeletochronology and stable isotope analyses offer new insight into juvenile loggerhead sea turtle oceanic stage duration and growth dynamics by Avens, Larisa, Goshe, Lisa R., Pajuelo, Mariela, Bjorndal, Karen A., MacDonald, Bradley D., Lemons, Garrett E., Bolten, Alan B., Seminoff, Jeffrey A.

“…Stage durations are integral to wildlife population models that can inform management, as they influence age at maturation and stage-specific survival rates…”
Get full text

Global Trajectories of the Long-Term Decline of Coral Reef Ecosystems by Pandolfi, John M., Bradbury, Roger H., Sala, Enric, Hughes, Terence P., Bjorndal, Karen A., Cooke, Richard G., McArdle, Deborah, McClenachan, Loren, Marah J. H. Newman, Paredes, Gustavo, Warner, Robert R., Jeremy B. C. Jackson

“…Degradation of coral reef ecosystems began centuries ago, but there is no global summary of the magnitude of change. We compiled records, extending back…”
Get full text

Integrated mixed-effect growth models for species with incomplete ageing histories: a case study for the loggerhead sea turtle Caretta caretta by Chasco, Brandon E., Thorson, James T., Heppell, Selina S., Avens, Larisa, McNeill, Joanne Braun, Bolten, Alan B., Bjorndal, Karen A., Ward, Eric J.

“…For stochastic growth processes, integrated mixed-effects (IME) models of capture− recapture data and size-at-age data from calcified structures such as…”
Get full text

Simulated green turtle grazing affects structure and productivity of seagrass pastures by Moran, Kathleen L., Bjorndal, Karen A.

“…The seagrassThalassia testudinumevolved under much greater grazing pressure than exists today because overexploitation by humans caused the severe decline of…”
Get full text

Selective feeding in the hawksbill turtle, an important predator in coral reef ecosystems by León, Yolanda M., Bjorndal, Karen A.

“…We evaluated selective feeding in hawksbill turtlesEretmochelys imbricataby comparing ingested prey species with their availability at 2 sites in the SW…”
Get full text

Ecosystem structure and processes at Kaloko Honokohau, focusing on the role of herbivores, including the green sea turtle Chelonia mydas, in reef resilience by Wabnitz, CCC, Balazs, G, Beavers, S, Bjorndal, KA, Bolten, AB, Christensen, V, Hargrove, S, Pauly, D

Get full text

Mixed-stock analysis reveals the migrations of juvenile hawksbill turtles (Eretmochelys imbricata) in the Caribbean Sea by BOWEN, B.W, GRANT, W.S, HILLIS-STARR, Z, SHAVER, D.J, BJORNDAL, K.A, BOLTEN, A.B, BASS, A.L

“…Hawksbill turtles (Eretmochelys imbricata) migrate between nesting beaches and feeding habitats that are often associated with tropical reefs, but it is…”
Get full text

Sea turtle population structure and connections between oceanic and neritic foraging areas in the Atlantic revealed through trace elements by López-Castro, Melania C., Bjorndal, Karen A., Kamenov, George D., Zenil-Ferguson, Rosana, Bolten, Alan B.

“…Assessing population structure and connectivity of species that have cryptic life stages, such as sea turtles, is a challenge in conservation biology. The…”
Get full text

Evaluating Trends in Abundance of Immature Green Turtles, Chelonia mydas, in the Greater Caribbean by Bjorndal, Karen A., Bolten, Alan B., Chaloupka, Milani Y.

“…Many long-lived marine species exhibit life history traits that make them more vulnerable to overexploitation. Accurate population trend analysis is essential…”
Get full text

Stable isotope variation in loggerhead turtles reveals Pacific–Atlantic oceanographic differences by Pajuelo, Mariela, Bjorndal, Karen A., Alfaro-Shigueto, Joanna, Seminoff, Jeffrey A., Mangel, Jeffrey C., Bolten, Alan B.

“…Denitrification and nitrogen-fixation processes in the marine environment have been intensively studied, particularly how these processes affect the nitrogen…”
Get full text