The shallow benthic food web structure in the high Arctic does not follow seasonal changes in the surrounding environment

2012 ◽  
Vol 114 ◽  
pp. 183-191 ◽  
Author(s):  
Monika Kędra ◽  
Karol Kuliński ◽  
Wojciech Walkusz ◽  
Joanna Legeżyńska
Keyword(s):  
Food Web ◽  
Seasonal Changes ◽  
High Arctic ◽  
Food Web Structure ◽  
Benthic Food Web ◽  
Web Structure ◽  
Surrounding Environment ◽  
Benthic Food

Benthic food-web structure of an Arctic fjord (Kongsfjorden, Svalbard)

2010 ◽  
Vol 7 (1) ◽  
pp. 13-26 ◽  
Author(s):  
Paul E. Renaud ◽  
Michael Tessmann ◽  
Anita Evenset ◽  
Guttorm N. Christensen
Keyword(s):  
Food Web ◽  
Food Web Structure ◽  
Benthic Food Web ◽  
Web Structure ◽  
Arctic Fjord ◽  
Benthic Food

Modification of benthic food web structure by recovering seagrass meadows, as revealed by trophic markers and mixing models

2018 ◽  
Vol 90 ◽  
pp. 28-37 ◽  
Author(s):  
Emilia Jankowska ◽  
Marleen De Troch ◽  
Loïc N. Michel ◽  
Gilles Lepoint ◽  
Maria Włodarska-Kowalczuk
Keyword(s):  
Food Web ◽  
Mixing Models ◽  
Food Web Structure ◽  
Benthic Food Web ◽  
Seagrass Meadows ◽  
Web Structure ◽  
Benthic Food ◽  
Trophic Markers

scholarly journals Is benthic food web structure related to diversity of marine macrobenthic communities?

2012 ◽  
Vol 108 ◽  
pp. 76-86 ◽  
Author(s):  
A. Sokołowski ◽  
M. Wołowicz ◽  
H. Asmus ◽  
R. Asmus ◽  
A. Carlier ◽  
...  
Keyword(s):  
Food Web ◽  
Food Web Structure ◽  
Benthic Food Web ◽  
Macrobenthic Communities ◽  
Web Structure ◽  
Benthic Food

Benthic food web structure in the southeastern Chukchi Sea: an assessment using δ13C and δ15N analyses

Polar Biology ◽  
2010 ◽  
Vol 34 (4) ◽  
pp. 521-532 ◽  
Author(s):  
Howard M. Feder ◽  
Katrin Iken ◽  
Arny L. Blanchard ◽  
Stephen C. Jewett ◽  
Susan Schonberg
Keyword(s):  
Food Web ◽  
Chukchi Sea ◽  
Food Web Structure ◽  
Δ13c And Δ15n ◽  
Benthic Food Web ◽  
Web Structure ◽  
Benthic Food

Organic enrichment simplifies marine benthic food web structure

2017 ◽  
Vol 62 (5) ◽  
pp. 2179-2188 ◽  
Author(s):  
Marie C. Nordström ◽  
Erik Bonsdorff
Keyword(s):  
Food Web ◽  
Organic Enrichment ◽  
Food Web Structure ◽  
Benthic Food Web ◽  
Web Structure ◽  
Benthic Food

scholarly journals Reliance of deep-sea benthic macrofauna on ice-derived organic matter highlighted by multiple trophic markers during spring in Baffin Bay, Canadian Arctic

Elem Sci Anth ◽  
2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Gustavo Yunda-Guarin ◽  
Thomas A. Brown ◽  
Loïc N. Michel ◽  
Blanche Saint-Béat ◽  
Rémi Amiraux ◽  
...  
Keyword(s):  
Sea Ice ◽  
Food Web ◽  
Carbon Sources ◽  
Food Web Structure ◽  
Sea Ice Concentration ◽  
Baffin Bay ◽  
Benthic Food Web ◽  
Relative Contribution ◽  
Ice Concentration ◽  
Benthic Food

Benthic organisms depend primarily on seasonal pulses of organic matter from primary producers. In the Arctic, declines in sea ice due to warming climate could lead to changes in this food supply with as yet unknown effects on benthic trophic dynamics. Benthic consumer diets and food web structure were studied in a seasonally ice-covered region of Baffin Bay during spring 2016 at stations ranging in depth from 199 to 2,111 m. We used a novel combination of highly branched isoprenoid (HBI) lipid biomarkers and stable isotope ratios (δ13C, δ15N) to better understand the relationship between the availability of carbon sources in spring on the seafloor and their assimilation and transfer within the benthic food web. Organic carbon from sea ice (sympagic carbon [SC]) was an important food source for benthic consumers. The lipid biomarker analyses revealed a high relative contribution of SC in sediments (mean SC% ± standard deviation [SD] = 86% ± 16.0, n = 17) and in benthic consumer tissues (mean SC% ± SD = 78% ± 19.7, n = 159). We also detected an effect of sea-ice concentration on the relative contribution of SC in sediment and in benthic consumers. Cluster analysis separated the study region into three different zones according to the relative proportions of SC assimilated by benthic macrofauna. We observed variation of the benthic food web between zones, with increases in the width of the ecological niche in zones with less sea-ice concentration, indicating greater diversity of carbon sources assimilated by consumers. In zones with greater sea-ice concentration, the higher availability of SC increased the ecological role that primary consumers play in driving a stronger transfer of nutrients to higher trophic levels. Based on our results, SC is an important energy source for Arctic deep-sea benthos in Baffin Bay, such that changes in spring sea-ice phenology could alter benthic food-web structure.

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