NDLI: Trophic relationships of a subtidal fish assemblage in the Francisco Coloane Coastal Marine Protected Area, southern Chilean Patagonia

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Volume 37, 2018

Volume: 38 Issue: 1

A histological study of the skin, hair follicles and moult of the hooded seal (Cystophora cristata [Erxleben, 1777])

Large versus small zooplankton in relation to temperature in the Arctic shelf region

Trophic relationships of a subtidal fish assemblage in the Francisco Coloane Coastal Marine Protected Area, southern Chilean Patagonia

The magnetic method as a tool to investigate the Werenskioldbreen environment (south-west Spitsbergen, Arctic Norway)

Response of Antarctic sea-ice algae to an experimental decrease in pH: a preliminary analysis from chlorophyll fluorescence imaging of melting ice

Nutrient uptake controls and limitation dynamics in north-east Greenland streams

Svalbard from above

Influence of meteorological parameters on atmospheric CO2 at Bharati, the Indian Antarctic research station

Radiogenic isotope (Nd, Pb, Sr) signatures of surface and sea ice-transported sediments from the Arctic Ocean under the present interglacial conditions

Multi-temporal variation of the Ross Sea Polynya in response to climate forcings

Overlap and temporal variation in the diets of sympatric Antarctic and Subantarctic fur seals (Arctocephalus spp.) at Marion Island, Prince Edward Islands

Di(2-ethylhexyl) adipate (DEHA) detection in Antarctic krill (Euphasia superba Dana)

The number and distribution of polar bears in the western Barents Sea

Determining the species assemblage and habitat use of cetaceans in the Svalbard Archipelago, based on observations from 2002 to 2014

Facing the climate change conundrum at the South Pole: actors’ perspectives on the implications of global warming for Chilean Antarctic governance

Mapping glacier-related research in polar regions: a bibliometric analysis of research output from 1987 to 2016

Shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape

On the long-ignored scientific achievements of the Belgica expedition 1897–1899

Priestley’s progress: the life of Sir Raymond Priestley, Antarctic explorer, scientist, soldier, academician

Creating a 3D database of Svalbard’s historical sites: 3D inventory and virtual reconstruction of a mining building at Camp Asbestos, Wedel Jarlsberg Land, Svalbard

Circulation and exchange in a broad Arctic fjord using glider-based observations

The sensitivity of diatom taxa from Yakutian lakes (north-eastern Siberia) to electrical conductivity and other environmental variables

Provenance, transport and diagenesis of sediment in polar areas: a case study in Profound Lake, King George Island, Antarctica

Temperature (latitude) and nutrient (seabird guano) effects on limno-terrestrial Tardigrada (Testechiniscus spitsbergensis and Pilatobius recamieri) body size

The polar adventures of a rich american dame: a life of Louise Arner Boyd

Planktonic food web structure at SSTF and PF in the Indian sector of the Southern Ocean during austral summer 2011

Interannual variability in hydrography and water mass distribution in Hornsund, an Arctic fjord in Svalbard

A screening for canine distemper virus, canine adenovirus and carnivore protoparvoviruses in Arctic foxes (Vulpes lagopus) and red foxes (Vulpes vulpes) from Arctic and sub-Arctic regions of Norway

A preliminary survey of the terrestrial arthropods of the Rosenthal Islands, Antarctica

Investigation of Babesia sp. in pygoscelid penguins at the South Shetland Islands

Precipitation instruments at Rothera Station, Antarctic Peninsula: a comparative study

Sediments of MIS 5e age suggested by new OSL dates from the Skilvika section, west Svalbard

Occurrence of Ulva lactuca L. 1753 (Ulvaceae, Chlorophyta) at the Murman Сoast of the Barents Sea

Methane emissions are lower from reindeer fed lichens compared to a concentrate feed

Effect of seasonal mesoscale and microscale meteorological conditions in Ny-Ålesund on results of monitoring of long-range transported pollution

Plant dispersal by Canada geese in Arctic Greenland

Current logistical capacity is sufficient to deliver the implementation and management of a representative Antarctic protected area system

Description of plant communities on Half Moon Island, Antarctica

Revisiting perceptions and evolving culture: a community dialogue on women in polar research

Adult survival of Arctic terns in the Canadian High Arctic

Are current research funding structures sufficient to address rapid Arctic change in a meaningful way?

Warm-water events in the eastern Fram Strait during the last 2000 years as revealed by different microfossil groups

Abnormal gonads in the Antarctic toothfish (Dissostichus mawsoni Norman, 1937 [Perciformes: Nototheniidae]): the first record and histological description

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Trophic relationships of a subtidal fish assemblage in the Francisco Coloane Coastal Marine Protected Area, southern Chilean Patagonia

Content Provider	Taylor & Francis Online
Author	Murcia, Silvia Gutiérrez, David Davis, Ernesto Haro, Daniela Hüne, Mathias
Abstract	A combination of stomach content and nitrogen (δ15N) and carbon (δ13C) stable-isotope analysis was used to assess the trophic interactions and feeding habits of three notothenioid coastal fish (Champsocephalus esox, Patagonotothen tessellata and Patagonotothen cornucola) and one exotic salmon species (Oncorhynchus tschawytscha) with diverse life habits (benthic and benthopelagic) in the Francisco Coloane Coastal Marine Protected Area, southern Chile. The stomach contents of C. esox were mainly fish; those of P. cornucola and O. tschawytscha were crustacean decapods, Munida gregaria. A cluster analysis on isotope data and stable-isotope Bayesian ellipses detected two different predator groups, one with benthopelagic habits (C. esox and O. tshawytscha) and one with benthic habits (P. cornucola and P. tessellata). These results were supported with similar isotopic trophic level of each group. We suggest that the exotic salmon O. tschawytscha is a generalist predator with a broad trophic niche that may compete with the native notothenioid C. esox, as both have equivalent trophic levels with substantial overlap. This preliminary study is the first on trophic relationships of a subtidal fish assemblage within a remote ecosystem of fjords and channels in Chile’s southern Patagonia.
File Format	PDF HTM / HTML
ISSN	17518369
DOI	10.1080/17518369.2018.1435107
Journal	Polar Research
Volume Number	37
Issue Number	1
Language	English
Publisher	Routledge
Publisher Date	2018-02-27
Access Restriction	Open
Subject Keyword	Notothenioidei Exotic salmonid Trophic level Feeding habits Magellan region Sub-Antarctic TL: trophic level HSD: Tukey’s honest significant difference test IRI: index of relative importance CMPA: Coastal Marine Protected Area SEAc: standard ellipse area corrected for sample size ANOVA: analysis of variance analysis
Content Type	Text
Resource Type	Article
Subject	1900/1901 Environmental Chemistry Environmental Science Oceanography

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