Ice dynamics and variations in trophic networks and transfer of contaminants at Terra Nova bay: a study based on the analysis of stable isotopes (C, N) and heavy metals in sympagic algae, plankton, fish and avifauna
Trophic interactions underlie coexistence mechanisms between species, define the functional role of specie within communities, affect biodiversity and bioaccumulation processes of heavy metal. Sea-ice dynamics, which at Terra Nova Bay is characterized by an extraordinary seasonality, drives interspecific interactions and the exchange of materials between ecosystem compartments. Indeed, the activation of the primary production after sea-ice break up opens alternative trophic pathways for consumers. The “next generation SRPs” represent a highly appropriate framework for the present project which follows the results obtained with the previous project ISOBIOTOX (PNRA 2013) and aims at (i) determine topological and functional metrics of sympagic and pelagic food webs at Terra Nova Bay under different conditions of sea-ice coverage along a distance gradient from the nearest open water polynya to areas were the seasonal sea-ice coverage persists longer; (ii) evaluate bioaccumulation and biomagnification of heavy metals in trophic sources at the base of the food web and in target species along food chains, including fishes of commercial interests and top predators, both in the presence and absence of sympagic and pelagic primary producers. High resolution food webs will be reconstructed by means of the simultaneous elemental and isotopic analysis of different elements (C and N) and the bioaccumulation of pollutants. The research program integrates complementary research approaches: (a) Elemental analysis coupled with mass spectrometry for stable isotope analysis (δ13C, δ15N) in animal and vegetal tissues and dead organic matter, (b)analyses of heavy metals accumulation (Chromatography) in the constituent species of the Antarctic food web.
Simple
- Date (Creation)
- 2024-01-01
- Identifier
- https://antarcticdatacenter.cnr.it/geonetwork/srv/api/records/fb76df45-1654-46c0-b827-b4252769fe0f
- Purpose
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Isotopic dataset (Carbon δ13C, and Nitrogen δ15N) of coastal benthic macroinvertebrates, primary resources, fish and penguin guano samples.
- Status
- Completed
- Maintenance and update frequency
- As needed
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SCAR Gazetteer of Antarctica
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Terra Nova Bay
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Edmonson Point
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Cape Hallett
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Tethys Bay
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Inexpressible Island
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GEMET - INSPIRE themes, version 1.0
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Habitats and biotopes
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GCMD - Science Keywords
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PENGUINS
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ANIMALS/INVERTEBRATES
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FOOD-WEB DYNAMICS
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BENTHIC
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STABLE ISOTOPES
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- Keywords
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PNRA project
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PNRA16_00291
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Research Organization
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Università di Roma Sapienza
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CoNISMa - Consorzio Nazionale Interuniversitario per le Scienze del Mare
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GCMD - Providers
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IT/PNRA
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- Use limitation
- CC BY-NC-SA 4.0
- Unique resource identifier
- XXXIII, XXXIV,
- Association Type
- dependency
- Initiative Type
- Campaign
- Spatial representation type
- Text, table
- Denominator
- 1
- Metadata language
- English
- Character set
- UTF8
- Topic category
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- Biota
- Environment
- Begin date
- 2017-12-28
- End date
- 2019-01-30 Now
- Unique resource identifier
- WGS84
- Distribution format
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FORMATO_DISTRIBUZIONE_DATI (ASCII, CSV, NetCDF...)
(
1
)
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FORMATO_DISTRIBUZIONE_DATI (ASCII, CSV, NetCDF...)
(
1
)
- OnLine resource
- PNRA project ( WWW:LINK-1.0-http--link )
- Hierarchy level
- Dataset
Domain consistency
Conformance result
- Date (Publication)
- 2010-12-08
- Explanation
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This data set is conformant with the INSPIRE Implementing Rules for the interoperability of spatial data sets and services
- Pass
- Yes
- Statement
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This data set contain Isotopic dataset (Carbon δ13C, and Nitrogen δ15N) of coastal benthic macroinvertebrates, primary resources, fish and penguin guano samples.
- File identifier
- a8b93166-d303-4eea-8d08-64ae2b67eeed XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2024-10-23T10:51:18
- Metadata standard name
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ISO 19139
- Metadata standard version
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1.0