Increased sea ice melt as a driver of enhanced Arctic phytoplankton blooming

Increased sea ice melt as a driver of enhanced Arctic phytoplankton blooming

© 2023 The Authors. Global Change Biology published by John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 29(2023), 17 vom: 30. Sept., Seite 5087-5098
1. Verfasser: Castagno, Andrew P (VerfasserIn)
Weitere Verfasser: Wagner, Till J W, Cape, Mattias R, Lester, Conner W, Bailey, Elizabeth, Alves-de-Souza, Catharina, York, Robert A, Fleming, Alyson H
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Arctic ecosystems oceanographic measurements phytoplankton blooms primary productivity sea ice melt Chlorophyll A YF5Q9EJC8Y Chlorophyll 1406-65-1
Beschreibung
Zusammenfassung:© 2023 The Authors. Global Change Biology published by John Wiley & Sons Ltd.
Phytoplankton primary production in the Arctic Ocean has been increasing over the last two decades. In 2019, a record spring bloom occurred in Fram Strait, characterized by a peak in chlorophyll that was reached weeks earlier than in other years and was larger than any previously recorded May bloom. Here, we consider the conditions that led to this event and examine drivers of spring phytoplankton blooms in Fram Strait using in situ, remote sensing, and data assimilation methods. From samples collected during the May 2019 bloom, we observe a direct relationship between sea ice meltwater in the upper water column and chlorophyll a pigment concentrations. We place the 2019 spring dynamics in context of the past 20 years, a period marked by rapid change in climatic conditions. Our findings suggest that increased advection of sea ice into the region and warmer surface temperatures led to a rise in meltwater input and stronger near-surface stratification. Over this time period, we identify large-scale spatial correlations in Fram Strait between increased chlorophyll a concentrations and increased freshwater flux from sea ice melt
Beschreibung:Date Completed 02.08.2023
Date Revised 31.08.2023
published: Print-Electronic
Citation Status MEDLINE
ISSN:1365-2486
DOI:10.1111/gcb.16815