Seasonal ecosystem metabolism across shallow benthic habitats measured by aquatic eddy covariance

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http://hdl.handle.net/10138/304372

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Attard , K M , Rodil , I F , Glud , R N , Berg , P , Norkko , J & Norkko , A 2019 , ' Seasonal ecosystem metabolism across shallow benthic habitats measured by aquatic eddy covariance ' , Limnology and oceanography letters , vol. 4 , no. 3 , pp. 79-86 . https://doi.org/10.1002/lol2.10107

Title: Seasonal ecosystem metabolism across shallow benthic habitats measured by aquatic eddy covariance
Author: Attard, Karl M.; Rodil, Iván F.; Glud, Ronnie N.; Berg, Peter; Norkko, Joanna; Norkko, Alf
Contributor: University of Helsinki, Tvärminne Benthic Ecology Team
University of Helsinki, Tvärminne Benthic Ecology Team
University of Helsinki, Tvärminne Zoological Station
University of Helsinki, Tvärminne Benthic Ecology Team
Date: 2019-06
Language: eng
Number of pages: 8
Belongs to series: Limnology and oceanography letters
ISSN: 2378-2242
URI: http://hdl.handle.net/10138/304372
Abstract: Abstract Shallow benthic habitats are hotspots for carbon cycling and energy flow, but metabolism (primary production and respiration) dynamics and habitat-specific differences remain poorly understood. We investigated daily, seasonal, and annual metabolism in six key benthic habitats in the Baltic Sea using ~?2900?h of in situ aquatic eddy covariance oxygen flux measurements. Rocky substrates had the highest metabolism rates. Habitat-specific annual primary production per m2 was in the order Fucus vesiculosus canopy?>?Mytilus trossulus reef?>?Zostera marina canopy?>?mixed macrophytes canopy?>?sands, whereas respiration was in the order M. trossulus?>?F. vesiculosus?>?Z. marina?>?mixed macrophytes?> sands?>?aphotic sediments. Winter metabolism contributed 22?31% of annual rates. Spatial upscaling revealed that benthic habitats drive >?90% of ecosystem metabolism in waters ≤5?m depth, highlighting their central role in carbon and nutrient cycling in shallow waters.
Subject: 1181 Ecology, evolutionary biology
OXYGEN-UPTAKE
CARBON
OCEAN
EUTROPHICATION
PHYTOPLANKTON
PRODUCTIVITY
MACROPHYTES
FLUX
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