Seasonal changes in particulate organic matter (POM) concentrations and properties measured from deep areas of the Baltic Sea

Winogradow, Aleksandra; Mackiewicz, Anna; Pempkowiak, Janusz

doi:10.1016/j.oceano.2019.05.004

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Tytuł artykułu

Seasonal changes in particulate organic matter (POM) concentrations and properties measured from deep areas of the Baltic Sea

Autorzy

Winogradow Aleksandra , Mackiewicz Anna , Pempkowiak Janusz

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.1016/j.oceano.2019.05.004

Warianty tytułu

Języki publikacji

Abstrakty

In seawater particulate organic matter (POM) serves as a food source for heterotrophic bacteria and zooplankton and is a source of dissolved organic compounds and nutrients. POM plays a critical role in transporting carbon to marine sediments where a fraction of it is buried in subsurface sediments and thus avoids conversion to carbon dioxide on shorter time scales. Distribution and properties of POM were investigated in the Baltic Proper from 2013 to 2015. Particulate organic carbon (POC) was used to investigate POM sources and dynamics. Stable carbon isotopes (δ¹³C), elemental composition (C, N), chlorophyll a and POM contribution to suspended particulate matter (SPM) were also measured and interpreted. The water column exhibited concentrations ranging from 0.2 mg POC/l (deep water layer — DWL, cold season — CS) to 1.7 mg POC/l (surface water layer — SWL, warm season — WS). POM represented 0.15 to 0.45 of SPM during respective cold and warm seasons. Stable carbon isotopes (δ¹³C_POC) ranged from -22.5‰ (WS) to -28.0‰ (CS), while the POC/Chl a ratio ranged from 180 g/g (SWL-WS) to 300 g/g (DWL-CS). Seasonal changes were attributed to high primary production in the SWL during the WS, which represented a major POM source. Continuous mineralization/sedimentation through-out the water column constituted a major POM sink.

Słowa kluczowe

suspended particulate matter particulate organic carbon particulate nitrogen chl a pheo a δ13CPOC Gdańsk Deep Gotland Deep

Wydawca

Polish Academy of Sciences, Institute of Oceanology
Elsevier

Czasopismo

Oceanologia

Rocznik

2019

Tom

No. 61 (4)

Strony

505--521

Opis fizyczny

Bibliogr. 95 poz., mapa, tab., wykr.

Twórcy

autor

Winogradow Aleksandra

aleksandra@iopan.gda.pl

Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland

autor

Mackiewicz Anna

Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland

autor

Pempkowiak Janusz

Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-c01dc7af-35e2-4ed1-aee7-52c42c02bb0d