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Ontogenic dietary changes in South American sea lions
(Wiley Blackwell Publishing, Inc, 2009-11)
Stable isotopes of carbon and nitrogen in the skull bones of South American sea lions Otaria flavescens from the Chubut province (Argentina) were analysed to determine whether their feeding habits change during ontogeny. ...
Pelagic or benthic prey? Combining trophic analyses to infer the diet of a breeding South American seabird, the Red-legged Cormorant (Phalacrocorax gaimardi)
(Csiro Publishing, 2016-07)
The available information about the feeding habits and preferences of the Red-legged Cormorant (Phalacrocorax gaimardi) generally suggests that this near-Threatened South American cormorant is a sedentary benthic forager ...
Food webs of the Paraná River floodplain: Assessing basal sources using stable carbon and nitrogen isotopes
(Elsevier Gmbh, 2014-02)
Food webs in floodplain ecosystems may be based on a variety of aquatic, terrestrial or amphibiousfood resources. Here, we determined which of the basal resources mostly contribute to the food websin a floodplain lake of ...
An approach to prehispanic diets in the pampas during early/middle Holocene
(Wiley, 2008-12)
The purpose of this paper is to contribute to dietary studies of Early-Middle Holocene Pampean hunter-gatherers, and to evaluate the intra-group dietary differences. Results from stable carbon isotope analysis of the organic ...
Diet composition and foraging habitats of Adélie and gentoo penguins in three different stages of their annual cycle
(Springer, 2016-05)
We evaluated the diet of Adélie (Pygoscelis adeliae) and gentoo (P. papua) penguins at Stranger Point colony (25 de Mayo/King George Island) during different stages of their annual cycle using the stable isotope method and ...
Using stable isotopes to assess whether two sympatric dolphin species share trophic resources
(Wiley Blackwell Publishing, Inc, 2017-10-07)
In the southwestern South Atlantic Ocean, the dusky dolphin, Lagenorhynchus obscurus, and the short-beaked common dolphin, Delphinus delphis, overlap in their distribution along the Patagonian shelf and beyond the shelf-break ...
Tracing Water Sources and Fluxes in a Dynamic Tropical Environment: From Observations to Modeling
(Frontiers Media, 2020-11)
Tropical regions cover approximately 36% of the Earth’s landmass. These regions are home to 40% of the world’s population, which is projected to increase to over 50% by 2030 under a remarkable climate variability scenario ...
Exploring dietary trends in late Holocene populations from Northwest Argentina: Insights from new data on stable isotope analysis (δ 13 C and δ 15 N)
(Elsevier Ltd, 2018-04)
In the territory of Jujuy province, Northwest Argentina (NWA), a marked environmental diversity promoted the emergence of a wide spectrum of subsistence strategies during prehistoric times. This work explores thevariability ...
Diet composition of expanding breeding populations of the Magellanic Penguin
(Taylor & Francis, 2019-05)
The Magellanic Penguin (Spheniscus magellanicus) is the most abundant and widely distributed seabird breeding on the Patagonian Coast of Argentina. We combined conventional stomach content and stable isotope analysis to ...
Patterns of habitat partitioning for the portunid crab Ovalipes trimaculatus in costal Patagonian waters
(Academic Press Ltd - Elsevier Science Ltd, 2018-11)
Animals frequently face trade-offs between their requirements for maximizing growth and minimizing mortality risk. The partition of habitat use in foraging arenas and refuges as an answer to this trade-off has been evaluated ...