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Movements of three alcid species breeding sympatrically in Saint Pierre and Miquelon, northwestern Atlantic Ocean ArchiMer
Delord, Karine; Barbraud, Christophe; Pinaud, David; Letournel, Bruno; Jaugeon, Baptiste; Goraguer, Herle; Lazure, Pascal; Lormée, Hervé.
Among seabirds, alcids are particularly sensitive to bycatch in fisheries and oil pollution, yet their distribution at sea remains scarcely known in most of their breeding areas. GPS telemetry data of fifteen individuals of alcids (5 Razorbills 6 Common Murres and 4 Puffins) were analyzed to determine their distribution during the breeding period of 2016 at Saint Pierre and Miquelon Archipelago (SPM). Two analytical methods (threshold and a switching state-space model) were used to identify behavioral modes and foraging areas. We compared foraging movements and estimated the overlap between the species. Distribution and foraging covered an area located between SPM and Newfoundland. Our results revealed that the three species headed northward of their...
Tipo: Text Palavras-chave: Telemetry; Behavioral models; Animal movement; Distribution overlap; Fratercula arctica; Alca torda; Uria aalge.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00588/70038/68016.pdf
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A BEHAVIORAL APPROACH TOWARDS FUTURES CONTRACT USAGE. AgEcon
Pennings, Joost M.E.; Leuthold, Raymond M..
We propose a behavioral decision-making model to investigate what factors, observable as well as unobservable, owner-managers consider regarding futures contract usage. The conceptual model consists of two phases, reflecting the two-stage decision structure of manager’s use of futures. In the first phase owner-managers consider whether futures are within the market choice set for the enterprise. In the second phase the owner-manager decides whether or not to initiate a futures position when confronted with a concrete choice situation. In both phases owner-manager’s beliefs and perceptions play an important role. The proposed model is tested on a data set of Dutch farmers, based on computer-assisted personal interviews. Because we incorporate latent...
Tipo: Working or Discussion Paper Palavras-chave: Hedging; Futures; Structural equation modeling; Behavioral models; Futures exchanges; Choice models; Farmers; Institutional and Behavioral Economics.
Ano: 2001 URL: http://purl.umn.edu/46448
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