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First circumpolar assessment of Arctic freshwater phytoplankton and zooplankton diversity: Spatial patterns and environmental factors

Schartau, Ann Kristin and Mariash, Heather L. and Christoffersen, Kirsten S. and Bogan, Daniel and Dubovskaya, Olga P. and Fefilova, Elena B. and Hayden, Brian and Ingvason, Haraldur R. and Ivanova, Elena A. and Kononova, Olga N. and Kravchuk, Elena S. and Lento, Jennifer and Majaneva, Markus and Novichkova, Anna A. and Rautio, Milla and Ruhland, Kathleen M. and Shaftel, Rebecca and Smol, John P. and Vrede, Tobias and Kahilainen, Kimmo K. (2022). First circumpolar assessment of Arctic freshwater phytoplankton and zooplankton diversity: Spatial patterns and environmental factors. Freshwater Biology. 67 :1 , 141-158
[Research article]

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Abstract

Arctic freshwaters are facing multiple environmental pressures, including rapid climate change and increasing land-use activities. Freshwater plankton assemblages are expected to reflect the effects of these stressors through shifts in species distributions and changes to biodiversity. These changes may occur rapidly due to the short generation times and high dispersal capabilities of both phyto- and zooplankton. Spatial patterns and contemporary trends in plankton diversity throughout the circumpolar region were assessed using data from more than 300 lakes in the U.S.A. (Alaska), Canada, Greenland, Iceland, the Faroe Islands, Norway, Sweden, Finland, and Russia. The main objectives of this study were: (1) to assess spatial patterns of plankton diversity focusing on pelagic communities; (2) to assess dominant component of beta diversity (turnover or nestedness); (3) to identify which environmental factors best explain diversity; and (4) to provide recommendations for future monitoring and assessment of freshwater plankton communities across the Arctic region. Phytoplankton and crustacean zooplankton diversity varied substantially across the Arctic and was positively related to summer air temperature. However, for zooplankton, the positive correlation between summer temperature and species numbers decreased with increasing latitude. Taxonomic richness was lower in the high Arctic compared to the sub- and low Arctic for zooplankton but this pattern was less clear for phytoplankton. Fennoscandia and inland regions of Russia represented hotspots for, respectively, phytoplankton and zooplankton diversity, whereas isolated regions had lower taxonomic richness. Ecoregions with high alpha diversity generally also had high beta diversity, and turnover was the most important component of beta diversity in all ecoregions. For both phytoplankton and zooplankton, climatic variables were the most important environmental factors influencing diversity patterns, consistent with previous studies that examined shorter temperature gradients. However, barriers to dispersal may have also played a role in limiting diversity on islands. A better understanding of how diversity patterns are determined by colonisation history, environmental variables, and biotic interactions requires more monitoring data with locations dispersed evenly across the circumpolar Arctic. Furthermore, the importance of turnover in regional diversity patterns indicates that more extensive sampling is required to fully characterise the species pool of Arctic lakes.

Authors/Creators:Schartau, Ann Kristin and Mariash, Heather L. and Christoffersen, Kirsten S. and Bogan, Daniel and Dubovskaya, Olga P. and Fefilova, Elena B. and Hayden, Brian and Ingvason, Haraldur R. and Ivanova, Elena A. and Kononova, Olga N. and Kravchuk, Elena S. and Lento, Jennifer and Majaneva, Markus and Novichkova, Anna A. and Rautio, Milla and Ruhland, Kathleen M. and Shaftel, Rebecca and Smol, John P. and Vrede, Tobias and Kahilainen, Kimmo K.
Title:First circumpolar assessment of Arctic freshwater phytoplankton and zooplankton diversity: Spatial patterns and environmental factors
Series Name/Journal:Freshwater Biology
Year of publishing :2022
Volume:67
Number:1
Page range:141-158
Number of Pages:18
Publisher:WILEY
ISSN:0046-5070
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:alpha diversity, beta diversity, ecoregions, latitude, taxonomic richness, temperature
URN:NBN:urn:nbn:se:slu:epsilon-p-112755
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112755
Additional ID:
Type of IDID
DOI10.1111/fwb.13783
Web of Science (WoS)000665109000001
ID Code:27100
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:14 Feb 2022 14:37
Metadata Last Modified:14 Feb 2022 14:41

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