DOI: 10.20350/digitalcsic/17195
title: Metabolic rates of Mediterranean macrophytes as measured in benthic chambers incubations

description: This database contains partial data from the corrigendum of the database available at https://digital.csic.es/handle/10261/263004. It contains only benthic incubation data (no sensors) and is updated with new literature and author values.
description: There is partial overlap with the corrigendum: Hendriks, Iris E.; Escolano-Molt—, Anna; Vaquer-Sunyer, Raquel; Wesselmann, Marlene; Flecha, Susana; Marbˆ, Nœria; 2022; Mediterranean seagrass metabolic rates [dataset]; DIGITAL.CSIC; https://doi.org/10.20350/digitalCSIC/14523
description: [Description of methods used for collection/generation of data] Data on metabolic rates was extracted from the literature, through a literature search (May 2024) on SCOPUS and the Web of Science (WOS) using the keywords ÒPosidoniaÓ, OR ÒCymodoceaÓ, OR ÒSeagrassÓ, OR ÒMacrophytesÓ AND ÒProductivityÓ, OR ÒMetabolismÓ and manually screened for data on metabolism in the Mediterranean basin, or Spanish Littoral. This database was extended with unpublished data from the authors and data from dedicated sampling campaigns in 2021 in Pollen a, Mallorca, Delta de lÕEbre and S'Aranella, CadaquŽs, Catalunya, Spain, in 2022 in Panarea island, Italy, (Western Mediterranean) and in 2023 in Tenerife (Atlantic ocean) We compiled data from the benthic chambers methodology only, with a temporal cover from 1982 to 2023. Data from the literature were extracted first from tables, then from text, and if not otherwise available, extracted by using WebPlotDigitizer software (version 4.7.0) from graphs.
description: [Methods for processing the data] For benthic chambers, reported metabolic rates were extracted from the literature. In these articles net community production (NCP) and respiration (R) were generally estimated from changes in dissolved oxygen using the Winkler titration spectrophotometric method (Labasque et al., 2004). The benthic-chamber methodology has been more generally used to assess metabolism of macrophyte meadows. Benthic chambers enclose a section of the macrophyte meadow, and flexible fitted plastic bags, not permeable for gases, assure the possibility of movement of the shoots inside; see details in the method section of each paper for the exact construction used. This database contains a total of 332 NCP estimations. Where not published, metabolic data were obtained by deploying a dissolved oxygen and temperature logger (miniDOT, Precision Measurements Engineering) recording every 10 min for 24 h. The miniDOT loggers were attached to a stainless-steel bar that was previously fixed in the center of the plastic ring. For Panarea and Cadaques data metabolic data were obtained following the methodology described in Galobart et al, 2024. When metabolic rates were reported in the literature in carbon units (mmol C m-2á d-1) we converted all the database to DO units (mmol O2 m-2á d-1) assuming photosynthetic and respiratory quotients of 1 (e.g. Barr—n et al., 2004; Duarte et al., 2010; Tuya et al., 2014; Ferguson et al., 2017). Other abiotic factors, such as temperature, salinity, depth, and biotic variables, such as density (in shoots m-2) and biomass were reported in g DW m-2 where available, or applying a conversion factor FW/DW for Cymodocea nodosa and Caulerpa prolifera using regressions y = 0.0134x + 0.0448 (R? = 0.9985) and y = 0.1582x - 0.0002 (R? = 0.9579) respectively.
description: This dataset is a compilation of information on metabolic rates of Mediterranean macrophytes (not necessarily within the boundaries of the Mediterranean, as there is data from Cymodocea in Tenerife) obtained by incubations in benthic chambers from a published database in Digital.CSIC (https://doi.org/10.20350/digitalCSIC/14523), published literature, and data from authors.