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Wang C, Zhao L, Wei Y, Xu Z, Zhao Y, Zhao Y, Zhang W, Xiao T. Insights into the structure of the pelagic microbial food web in the oligotrophic tropical Western Pacific: Examining trophic interactions and relationship with abiotic variables. MARINE POLLUTION BULLETIN 2023; 197:115772. [PMID: 37988968 DOI: 10.1016/j.marpolbul.2023.115772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/23/2023]
Abstract
Microbial food webs (MFW) play an indispensable role in marine pelagic ecosystem, yet their composition and response to abiotic variables were poorly documented in the oligotrophic tropical Western Pacific. During winter of 2015, we conducted a survey to examine key components of MFW, including Synechococcus, Prochlorococcus, picoeukaryotes, heterotrophic prokaryotes (HP), heterotrophic/pigmented nanoflagellates and ciliates, across water column from surface to 2000 m. Each MFW component exhibited unique vertical distribution pattern, with abundance ratio varying over six and three orders of magnitude across Pico/Microplankton (1.6 ± 1.0 × 106) and Nano/Microplankton (3.2 ± 2.8 × 103), respectively. Furthermore, HP was main component for MFW in the bathypelagic (>1000 m) zone. Multivariate biota-environment analysis demonstrated that environmental variables, particularly temperature, significantly impacted MFW composition, suggesting that bottom-up control (resource availability) dominated the water column. Our study provides benchmark information for future environmental dynamics forcing on MFW in the oligotrophic tropical seas.
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Affiliation(s)
- Chaofeng Wang
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Li Zhao
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Yuanyuan Wei
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
| | - Zhimeng Xu
- Department of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Yanchu Zhao
- Ecological Environment Monitoring and Scientific Research Center of Haihe River Basin and Beihai Sea Area, Ministry of Ecological Environment, Tianjin 300170, China
| | - Yuan Zhao
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Wuchang Zhang
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Tian Xiao
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
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Li H, Xu Z, Mou W, Gao L, Zu Y, Wang C, Zhao Y, Zhang W, Xiao T. Planktonic ciliates in different water masses of Cosmonaut and Cooperation Seas (Indian sector of the Southern Ocean) during austral summer. Polar Biol 2022. [DOI: 10.1007/s00300-022-03057-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Monti-Birkenmeier M, Diociaiuti T, Badewien TH, Schulz AC, Friedrichs A, Meyer B. Spatial distribution of microzooplankton in different areas of the northern Antarctic Peninsula region, with an emphasis on tintinnids. Polar Biol 2021. [DOI: 10.1007/s00300-021-02910-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AbstractThe Western Antarctic Peninsula (WAP) is experiencing rapid climate warming, resulting in affecting the marine food web. To investigate the microzooplankton spatial distribution and to assess how climate change could affect the tintinnids community, sea water samples were collected during late summer 2018 at 19 stations in three different areas: Deception Island, Elephant Island and Antarctic Sound. The microzooplankton community comprised mainly tintinnids, aloricate ciliates, heterotrophic dinoflagellates and micrometazoans. Microzooplankton abundance varied between 3 and 109 ind. L−1 and biomass ranged from 0.009 to 2.55 µg C L−1. Significant differences in terms of abundance and taxonomic composition of microzooplankton were found among the three sampling areas. Deception Island area showed 44% of tintinnids and the rest were heterotrophic dinoflagellate, aloricate ciliates and micrometazoans. In Elephant Island and Antarctic Sound areas, tintinnids reached, respectively, 73% and 83% of the microzooplankton composition, with all the other groups varying between 20 and 30%. Tintinnids were the most representative group in the area, with the species Codonellopsis balechi, Codonellopsis glacialis, Cymatocylis convallaria and Cymatocylis drygalskii. The highest amounts of tintinnids were found at the surface and 100 m depth. The above mentioned species may be considered key species for the WAP and therefore they can be used to track environmental and hydrographical changes in the area. In late summer, microzooplankton presented low abundances and biomass, nevertheless they represented an important fraction of the planktonic community in the area.
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Jansen J, Dunstan PK, Hill NA, Koubbi P, Melbourne-Thomas J, Causse R, Johnson CR. Integrated assessment of the spatial distribution and structural dynamics of deep benthic marine communities. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2020; 30:e02065. [PMID: 31872512 DOI: 10.1002/eap.2065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 08/15/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
Characterizing the spatial distribution and variation of species communities and validating these characteristics with data from the field are key elements for an ecosystem-based approach to management. However, models of species distributions that yield community structure are usually not linked to models of community dynamics, constraining understanding and management of the ecosystem, particularly in data-poor regions. Here we use a qualitative network model to predict changes in Antarctic benthic community structure between major marine habitats characterized largely by seafloor depth and slope, and use multivariate mixture models of species distributions to validate the community dynamics. We then assess how future increases in primary production associated with anticipated loss of sea-ice may affect the ecosystem. Our study shows how both spatial and structural features of ecosystems in data-poor regions can be analyzed and possible futures assessed, with direct relevance for ecosystem-based management.
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Affiliation(s)
- Jan Jansen
- Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, 20 Castray Esplanade, Battery Point, Hobart, Tasmania, 7004, Australia
| | | | - Nicole A Hill
- Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, 20 Castray Esplanade, Battery Point, Hobart, Tasmania, 7004, Australia
| | - Philippe Koubbi
- UFR 918 Terre Environnement Biodiversité, Sorbonne Université, Paris, France
- Channel and North Sea Fisheries Research Unit, IFREMER, Boulogne-sur-Mer, France
| | | | - Romain Causse
- Unité Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Muséum National d'Histoire Naturelle, Sorbonne Université, Université de Caen Normandie, Université des Antilles, CNRS, IRD, Paris, France
| | - Craig R Johnson
- Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, 20 Castray Esplanade, Battery Point, Hobart, Tasmania, 7004, Australia
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Jansen J, Hill NA, Dunstan PK, Cougnon EA, Galton-Fenzi BK, Johnson CR. Mapping Antarctic Suspension Feeder Abundances and Seafloor Food-Availability, and Modeling Their Change After a Major Glacier Calving. Front Ecol Evol 2018. [DOI: 10.3389/fevo.2018.00094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jansen J, Hill NA, Dunstan PK, Eléaume MP, Johnson CR. Taxonomic Resolution, Functional Traits, and the Influence of Species Groupings on Mapping Antarctic Seafloor Biodiversity. Front Ecol Evol 2018. [DOI: 10.3389/fevo.2018.00081] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jansen J, Hill NA, Dunstan PK, McKinlay J, Sumner MD, Post AL, Eléaume MP, Armand LK, Warnock JP, Galton-Fenzi BK, Johnson CR. Abundance and richness of key Antarctic seafloor fauna correlates with modelled food availability. Nat Ecol Evol 2017; 2:71-80. [DOI: 10.1038/s41559-017-0392-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 10/20/2017] [Indexed: 11/09/2022]
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Petrou K, Kranz SA, Trimborn S, Hassler CS, Ameijeiras SB, Sackett O, Ralph PJ, Davidson AT. Southern Ocean phytoplankton physiology in a changing climate. JOURNAL OF PLANT PHYSIOLOGY 2016; 203:135-150. [PMID: 27236210 DOI: 10.1016/j.jplph.2016.05.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 05/04/2016] [Accepted: 05/06/2016] [Indexed: 06/05/2023]
Abstract
The Southern Ocean (SO) is a major sink for anthropogenic atmospheric carbon dioxide (CO2), potentially harbouring even greater potential for additional sequestration of CO2 through enhanced phytoplankton productivity. In the SO, primary productivity is primarily driven by bottom up processes (physical and chemical conditions) which are spatially and temporally heterogeneous. Due to a paucity of trace metals (such as iron) and high variability in light, much of the SO is characterised by an ecological paradox of high macronutrient concentrations yet uncharacteristically low chlorophyll concentrations. It is expected that with increased anthropogenic CO2 emissions and the coincident warming, the major physical and chemical process that govern the SO will alter, influencing the biological capacity and functioning of the ecosystem. This review focuses on the SO primary producers and the bottom up processes that underpin their health and productivity. It looks at the major physico-chemical drivers of change in the SO, and based on current physiological knowledge, explores how these changes will likely manifest in phytoplankton, specifically, what are the physiological changes and floristic shifts that are likely to ensue and how this may translate into changes in the carbon sink capacity, net primary productivity and functionality of the SO.
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Affiliation(s)
- Katherina Petrou
- School of Life Sciences, University of Technology Sydney, 15 Broadway, Ultimo, New South Wales 2007, Australia.
| | - Sven A Kranz
- Florida State University, Department of Earth, Ocean and Atmospheric Sciences, Tallahassee, FL 32306, USA
| | - Scarlett Trimborn
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany; University of Bremen, Leobener Straße NW2, 28359 Bremen, Germany
| | - Christel S Hassler
- University of Geneva, Earth and Environmental Sciences, Institut F.-A. Forel, Uni Vogt, 66 bvd Carl-Vogt, 1211 Geneva 4, Switzerland
| | - Sonia Blanco Ameijeiras
- University of Geneva, Earth and Environmental Sciences, Institut F.-A. Forel, Uni Vogt, 66 bvd Carl-Vogt, 1211 Geneva 4, Switzerland
| | - Olivia Sackett
- School of Biological Sciences, Monash University, Melbourne, Victoria, Australia
| | - Peter J Ralph
- Plant Functional Biology and Climate Change Cluster, University of Technology Sydney, 15 Broadway, Ultimo, New South Wales 2007, Australia
| | - Andrew T Davidson
- Department of the Environment, Australian Antarctic Division, 203 Channel Highway, Kingston, Tasmania 7050, Australia; Antarctic Climate and Ecosystem Cooperative Research Centre (ACECRC), University of Tasmania, Private Bag 80, Hobart, Tasmania 7001, Australia
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Petrou K, Kranz SA, Doblin MA, Ralph PJ. PHOTOPHYSIOLOGICAL RESPONSES OF FRAGILARIOPSIS CYLINDRUS (BACILLARIOPHYCEAE) TO NITROGEN DEPLETION AT TWO TEMPERATURES(1). JOURNAL OF PHYCOLOGY 2012; 48:127-136. [PMID: 27009657 DOI: 10.1111/j.1529-8817.2011.01107.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The photosynthetic efficiency and photoprotective capacity of the sea-ice diatom, Fragilariopsis cylindrus (Grunow) W. Krieg., grown in a matrix of nitrogen repletion and depletion at two different temperatures (-1°C and +6°C) was investigated. Temperature showed no significant effect on photosynthetic efficiency or photoprotection in F. cylindrus. Cultures under nitrogen depletion showed enhanced photoprotective capacity with an increase in nonphotochemical quenching (NPQ) when compared with nitrogen-replete cultures. This phenomenon was achieved at no apparent cost to the photosynthetic efficiency of PSII (FV /FM ). Nitrogen depletion yielded a partially reduced electron transport chain in which maximum fluorescence (FM ) could only be obtained by adding 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU). reoxidation curves showed the presence of QB nonreducing PSII centers under nitrogen depletion. Fast induction curves (FICs) and electron transport rates (ETRs) revealed slowing of the electrons transferred from the primary (QA ) to the secondary (QB ) quinone electron acceptors of PSII. The data presented show that nitrogen depletion in F. cylindrus leads to the formation of QB nonreducing PSII centers within the photosystem. On a physiological level, the formation of QB nonreducing PSII centers in F. cylindrus provides the cell with protection against photoinhibition by facilitating the rapid induction of NPQ. This strategy provides an important ecological advantage, especially during the Antarctic spring, maintaining photosynthetic efficiency under high light and nutrient-limiting conditions.
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Affiliation(s)
- Katherina Petrou
- Plant Functional Biology and Climate Change Cluster and Department of Environmental Sciences, University of Technology, Sydney, PO Box 123, Broadway NSW 2007, AustraliaAlfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, D-27570 Bremerhaven, GermanyPlant Functional Biology and Climate Change Cluster and Department of Environmental Sciences, University of Technology, Sydney, PO Box 123, Broadway NSW 2007, Australia
| | - Sven A Kranz
- Plant Functional Biology and Climate Change Cluster and Department of Environmental Sciences, University of Technology, Sydney, PO Box 123, Broadway NSW 2007, AustraliaAlfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, D-27570 Bremerhaven, GermanyPlant Functional Biology and Climate Change Cluster and Department of Environmental Sciences, University of Technology, Sydney, PO Box 123, Broadway NSW 2007, Australia
| | - Martina A Doblin
- Plant Functional Biology and Climate Change Cluster and Department of Environmental Sciences, University of Technology, Sydney, PO Box 123, Broadway NSW 2007, AustraliaAlfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, D-27570 Bremerhaven, GermanyPlant Functional Biology and Climate Change Cluster and Department of Environmental Sciences, University of Technology, Sydney, PO Box 123, Broadway NSW 2007, Australia
| | - Peter J Ralph
- Plant Functional Biology and Climate Change Cluster and Department of Environmental Sciences, University of Technology, Sydney, PO Box 123, Broadway NSW 2007, AustraliaAlfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, D-27570 Bremerhaven, GermanyPlant Functional Biology and Climate Change Cluster and Department of Environmental Sciences, University of Technology, Sydney, PO Box 123, Broadway NSW 2007, Australia
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Lipid characterization of Pleuragramma antarcticum (Nothoteniidae) larvae off East Antarctica (139°E–145.10°E) during summer. Polar Biol 2011. [DOI: 10.1007/s00300-011-1127-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Pieńkowski AJ, Marret F, Thomas DN, Scourse JD, Dieckmann GS. Dinoflagellates in a fast-ice covered inlet of the Riiser-Larsen Ice Shelf (Weddell Sea). Polar Biol 2009. [DOI: 10.1007/s00300-009-0630-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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