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Likumahua S, de Boer MK, Krock B, Tatipatta WM, Abdul MS, Buma AGJ. Co-occurrence of pectenotoxins and Dinophysis miles in an Indonesian semi-enclosed bay. Mar Pollut Bull 2022; 185:114340. [PMID: 36410193 DOI: 10.1016/j.marpolbul.2022.114340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 10/29/2022] [Accepted: 11/02/2022] [Indexed: 06/16/2023]
Abstract
The study aims to unravel the variability of Dinophysis spp. and their alleged toxins in conjunction with environmental drivers in Ambon Bay. Phytoplankton samples, lipophilic toxins and physiochemical water properties were analysed during a 1.5-year period. Three Dinophysis species (D. miles, D. caudata, and D. acuminata) were found in plankton samples, of which D. miles was the most abundant and persistently occurring species. Pectenotoxin-2 (PTX2) and its secoacid (PTX2sa) were detected throughout, and PTX2sa levels strongly correlated with D. miles cell abundance. The toxin showed a positive correlation with temperature, which may suggest that D. miles cells contain rather constant PTX2sa during warmer months. Dissolved nitrate concentrations were found to play a major role in regulating cell abundances and toxin levels. This study adds adequate information regarding marine biotoxins and potentially toxic species for future Harmful Algal Bloom management in Ambon and Indonesia at large.
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Affiliation(s)
- Sem Likumahua
- Center for Isotope Research-CIO Oceans, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Centre for Deep Sea Research, The National Research and Innovation Agency (BRIN), Jl. Y. Syaranamual Guru-guru, Poka, 97233 Ambon, Indonesia; Collaborative Research Center for Aquatic Ecosystem of Eastern Indonesia, Pattimura University, Jl. Ir. M. Putuhena, Poka, 97233 Ambon, Indonesia.
| | - M Karin de Boer
- Center for Isotope Research-CIO Oceans, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Beta Science Shop, Faculty of Science and Engineering, University of Groningen, Nijenborgh 6, 9747AG Groningen, the Netherlands
| | - Bernd Krock
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Willem M Tatipatta
- Centre for Deep Sea Research, The National Research and Innovation Agency (BRIN), Jl. Y. Syaranamual Guru-guru, Poka, 97233 Ambon, Indonesia
| | - Malik S Abdul
- Centre for Deep Sea Research, The National Research and Innovation Agency (BRIN), Jl. Y. Syaranamual Guru-guru, Poka, 97233 Ambon, Indonesia
| | - Anita G J Buma
- Center for Isotope Research-CIO Oceans, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands
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Marampouti C, Buma AGJ, de Boer MK. Reply to "Comments on the Mediterranean alien harmful algal blooms". Environ Sci Pollut Res Int 2021; 28:58807-58808. [PMID: 33606166 DOI: 10.1007/s11356-021-12527-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Affiliation(s)
- Christina Marampouti
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG, 9747, Groningen, The Netherlands.
| | - Anita G J Buma
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG, 9747, Groningen, The Netherlands
| | - M Karin de Boer
- Bèta Science Shop, Faculty of Science and Engineering and Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 6, AG, 9747, Groningen, The Netherlands
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3
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Marampouti C, Buma AGJ, de Boer MK. Correction to: Reply to "comments on the Mediterranean alien harmful algal blooms". Environ Sci Pollut Res Int 2021; 28:58809. [PMID: 34478052 DOI: 10.1007/s11356-021-16172-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- Christina Marampouti
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG-9747, Groningen, The Netherlands.
| | - Anita G J Buma
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG-9747, Groningen, The Netherlands
| | - M Karin de Boer
- Bèta Science Shop, Faculty of Science and Engineering and Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 6, AG-9747, Groningen, The Netherlands
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Likumahua S, Sangiorgi F, de Boer MK, Tatipatta WM, Pelasula DD, Polnaya D, Hehuwat J, Siahaya DM, Buma AGJ. Dinoflagellate cyst distribution in surface sediments of Ambon Bay (eastern Indonesia): Environmental conditions and harmful blooms. Mar Pollut Bull 2021; 166:112269. [PMID: 33752158 DOI: 10.1016/j.marpolbul.2021.112269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 03/08/2021] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
The present study aimed to document dinocyst ecological preferences in Ambon Bay, Eastern Indonesia, and to investigate if the bay sediments serve as a seedbank for toxic bloom events. To this end, dinocyst and geochemical analyses of surface sediment samples were performed, along with physicochemical water column parameters. Twentythree dinocyst species were identified, and high dinocyst concentrations (up to ~12,000 cysts g-1 dry sediment) were found in the inner bay. Environmental factors such as surface water temperature and salinity generally played an important role in dinocyst distribution. The concentration of Polysphaeridium zoharyi cysts showed a strong positive correlation with phosphorus. A statistically significant correlation was also found with the concentration of other autotrophic dinocysts in the sediments, and an inverse correlation was observed with the sediment C/N ratio. Cysts may serve as seedbanks for Pyrodinium bahamense blooms in the area.
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Affiliation(s)
- Sem Likumahua
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru Poka, Ambon, Indonesia.
| | - Francesca Sangiorgi
- Department of Earth Sciences, Marine Palynology and Paleoceanography, Utrecht University, Princetonlaan 8A, 3584CB Utrecht, the Netherlands
| | - M Karin de Boer
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Beta Science Shop, Faculty of Science and Engineering, University of Groningen, Nijenborgh 6, 9747AG Groningen, the Netherlands
| | - Willem M Tatipatta
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru Poka, Ambon, Indonesia
| | - Daniel D Pelasula
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru Poka, Ambon, Indonesia
| | - Dominggus Polnaya
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru Poka, Ambon, Indonesia
| | - Jance Hehuwat
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru Poka, Ambon, Indonesia
| | - Donna M Siahaya
- Environmental Agency of North Halmahera District, Jl. Kawasan pemerintahan, Tobelo-Halmahera Utara 97762, Indonesia
| | - Anita G J Buma
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands
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Marampouti C, Buma AGJ, de Boer MK. Mediterranean alien harmful algal blooms: origins and impacts. Environ Sci Pollut Res Int 2021; 28:3837-3851. [PMID: 32803614 PMCID: PMC7835144 DOI: 10.1007/s11356-020-10383-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
Harmful algal blooms (HABs) are mostly phytoplankton blooms, which have detrimental environmental and socioeconomic impacts. The Mediterranean Sea due to its enclosed nature is of special concern since it has an enormously rich native biodiversity. Though, it is also the world's most invaded marine ecosystem and is considered at very high risk of future invasions. The aim of this review study is to explore the origins, establishment, environmental, and socioeconomic impacts of HABs caused by nonnative algal species in the Mediterranean Sea. Based on this, it is also discussed whether HABs form an increasing threat in the basin, and what could possibly be done to prevent or to minimize their impacts. The increasing rate of their introduction and the harmful impacts that they have on the environment, economy, and human health makes it important to have accurate knowledge about HABs. Anthropogenic activities and climate change are considered the main contributors of alien invasions but also the main enablers of HAB events. Mediterranean HABs are adequately studied, but there are no studies purposefully concerning invasive microalgae species in the basin. In the present study, 20 species have been identified, and an attempt has been made to collect their introduction information, as well as known or suspected impacts. Future research should be focused on data mining, current legislation updates, and monitoring of Mediterranean coastlines.
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Affiliation(s)
- Christina Marampouti
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG 9747, Groningen, The Netherlands.
| | - Anita G J Buma
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG 9747, Groningen, The Netherlands
| | - M Karin de Boer
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG 9747, Groningen, The Netherlands
- Bèta Science Shop, Faculty of Science and Engineering, University of Groningen, Nijenborgh 6, AG 9747, Groningen, The Netherlands
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6
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Kim H, Ducklow HW, Abele D, Ruiz Barlett EM, Buma AGJ, Meredith MP, Rozema PD, Schofield OM, Venables HJ, Schloss IR. Correction to 'Inter-decadal variability of phytoplankton biomass along the coastal West Antarctic Peninsula'. Philos Trans A Math Phys Eng Sci 2020; 378:20200281. [PMID: 32862807 PMCID: PMC7481663 DOI: 10.1098/rsta.2020.0281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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Likumahua S, de Boer MK, Krock B, Hehakaya S, Imu L, Müller A, Max T, Buma AGJ. Variability of dinoflagellates and their associated toxins in relation with environmental drivers in Ambon Bay, eastern Indonesia. Mar Pollut Bull 2020; 150:110778. [PMID: 31910525 DOI: 10.1016/j.marpolbul.2019.110778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 11/21/2019] [Accepted: 11/23/2019] [Indexed: 06/10/2023]
Abstract
The aim of the present work was to unravel which environmental drivers govern the dynamics of toxic dinoflagellate abundance as well as their associated paralytic shellfish toxins (PSTs), diarrhetic shellfish toxins (DSTs) and pectenotoxin-2 (PTX2) in Ambon Bay, Eastern Indonesia. Weather, biological and physicochemical parameters were investigated weekly over a 7-month period. Both PSTs and PTX2 were detected at low levels, yet they persisted throughout the research. Meanwhile, DSTs were absent. A strong correlation was found between total particulate PST and Gymnodinium catenatum cell abundance, implying that this species was the main producer of this toxin. PTX2 was positively correlated with Dinophysis miles cell abundance. Vertical mixing, tidal elevation and irradiance attenuation were the main environmental factors that regulated both toxins and cell abundances, while nutrients showed only weak correlations. The present study indicates that dinoflagellate toxins form a potential environmental, economic and health risk in this Eastern Indonesian bay.
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Affiliation(s)
- Sem Likumahua
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru Poka, 97233 Ambon, Indonesia..
| | - M Karin de Boer
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Beta Science Shop, Faculty of Science and Engineering, University of Groningen, Nijenborgh 6, 9747AG Groningen, the Netherlands
| | - Bernd Krock
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Salomy Hehakaya
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru Poka, 97233 Ambon, Indonesia
| | - La Imu
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru Poka, 97233 Ambon, Indonesia
| | - Annegret Müller
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Thomas Max
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Anita G J Buma
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands
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Likumahua S, de Boer MK, Krock B, Nieuwenhuizen T, Tatipatta WM, Hehakaya S, Imu L, Abdul MS, Moniharapon E, Buma AGJ. First record of the dynamics of domoic acid producing Pseudo-nitzschia spp. in Indonesian waters as a function of environmental variability. Harmful Algae 2019; 90:101708. [PMID: 31806164 DOI: 10.1016/j.hal.2019.101708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 11/04/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
Within the past few decades, harmful algal blooms (HABs) have occurred frequently in Indonesian waters, resulting in environmental degradation, economic loss and human health problems. So far, HAB related studies mainly addressed ecological traits and species distribution, yet toxin measurements were virtually absent for Indonesian waters. The aim of the present study was to explore variability of the potentially toxic marine diatom genus Pseudo-nitzschia, as well as its neurotoxin domoic acid as a function of environmental conditions in Ambon Bay, eastern Indonesia. Weekly phytoplankton samples, oceanographic (CTD, nutrients) and meteorological (precipitation, wind) parameters were analyzed at 5 stations in the bay during the dry and wet seasons of 2018. Liquid chromatography - tandem mass spectrometry (LC-MS/MS) was used to detect particulate DA (pDA). Vegetative cells of Pseudo-nitzschia spp. and pDA were found in 98.6% and 51.4% of the samples, respectively. pDA levels were low, yet detected throughout the campaign, implying that Ambon Bay might potentially be subject to amnesic shellfish poisoning. The highest levels of both Pseudo-nitzschia spp. cell abundance and pDA were found in the wet season, showing a strong positive correlation between both parameters, compared to the dry season, (r = 0.87 and r = 0.66 (p < 0.01), respectively). Statistical analyses revealed that temperature and mixed layer depth positively correlated with Pseudo-nitzschia spp. and pDA during the dry season, while ammonium showed positive correlations in both seasons. This study represents the first successful investigation of the presence and variability of Pseudo-nitzschia spp. and its neurotoxin DA in Indonesian waters.
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Affiliation(s)
- Sem Likumahua
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru-Poka, 97233 Ambon, Indonesia.
| | - M Karin de Boer
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands; Beta Science Shop, Faculty of Science and Engineering, University of Groningen, Nijenborgh 6, 9747AG Groningen, the Netherlands
| | - Bernd Krock
- Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Tomas Nieuwenhuizen
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands
| | - Willem M Tatipatta
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru-Poka, 97233 Ambon, Indonesia
| | - Salomy Hehakaya
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru-Poka, 97233 Ambon, Indonesia
| | - La Imu
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru-Poka, 97233 Ambon, Indonesia
| | - Malik S Abdul
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru-Poka, 97233 Ambon, Indonesia
| | - Eduard Moniharapon
- Centre for Deep Sea Research-LIPI, Jl. Y. Syaranamual Guru-guru-Poka, 97233 Ambon, Indonesia
| | - Anita G J Buma
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, Faculty of Science and Engineering, University of Groningen, Nijenborgh 7, 9747AG Groningen, the Netherlands
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Kulk G, Buist A, van de Poll WH, Rozema PD, Buma AGJ. Size scaling of photophysiology and growth in four freshly isolated diatom species from Ryder Bay, western Antarctic peninsula. J Phycol 2019; 55:314-328. [PMID: 30449029 PMCID: PMC6590143 DOI: 10.1111/jpy.12813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 10/19/2018] [Indexed: 06/09/2023]
Abstract
Diatoms are one of the dominant groups in phytoplankton communities of the western Antarctic Peninsula (WAP). Although generally well-studied, little is known about size dependent photophysiological responses in diatom bloom formation and succession. To increase this understanding, four Antarctic diatom species covering two orders of magnitude in cell size were isolated in northern Marguerite Bay (WAP). Fragilariopsis sp., Pseudo-nitzschia cf. subcurvata, Thalassiosira cf. antarctica, and Proboscia cf. alata were acclimated to three different irradiances after which photophysiology, electron transport, carbon fixation, and growth were assessed. The small species Fragilariopsis sp., Pseudo-nitzschia cf. subcurvata, and large species Proboscia cf. alata showed similar photoacclimation to higher irradiances with a decrease in cellular chlorophyll a and an increase in chlorophyll a specific absorption and xanthophyll cycle pigments and activity. In contrast, pigment concentrations and absorption remained unaffected by higher irradiances in the large species Thalassiosira cf. antarctica. Overall, the small species showed significantly higher growth rates compared to the large species, which was related to relatively high light harvesting capacity and electron transport rates in the smaller species. However, photophysiological responses related to photoinhibition and photoprotection and carbon fixation showed no relationship with cell size. This study supports the dominance of small diatoms at low irradiances during winter and early spring, but does not provide photophysiological evidence for the dominance of large diatoms during the phytoplankton bloom in the WAP. This suggests that other factors such as grazing and nutrient availability are likely to play a major role in diatom bloom formation.
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Affiliation(s)
- Gemma Kulk
- Department of Ocean EcosystemsEnergy and Sustainability Research Institute GroningenUniversity of GroningenNijenborgh 79747 AGGroningenthe Netherlands
| | - Anton Buist
- Department of Ocean EcosystemsEnergy and Sustainability Research Institute GroningenUniversity of GroningenNijenborgh 79747 AGGroningenthe Netherlands
| | - Willem H. van de Poll
- Department of Ocean EcosystemsEnergy and Sustainability Research Institute GroningenUniversity of GroningenNijenborgh 79747 AGGroningenthe Netherlands
| | - Patrick D. Rozema
- Department of Ocean EcosystemsEnergy and Sustainability Research Institute GroningenUniversity of GroningenNijenborgh 79747 AGGroningenthe Netherlands
| | - Anita G. J. Buma
- Department of Ocean EcosystemsEnergy and Sustainability Research Institute GroningenUniversity of GroningenNijenborgh 79747 AGGroningenthe Netherlands
- Arctic CentreFaculty of ArtsUniversity of GroningenAweg 309718 CWGroningenthe Netherlands
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Kim H, Ducklow HW, Abele D, Ruiz Barlett EM, Buma AGJ, Meredith MP, Rozema PD, Schofield OM, Venables HJ, Schloss IR. Correction to 'Inter-decadal variability of phytoplankton biomass along the coastal West Antarctic Peninsula'. Philos Trans A Math Phys Eng Sci 2018; 376:rsta.2018.0170. [PMID: 30177569 PMCID: PMC6127384 DOI: 10.1098/rsta.2018.0170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Kim H, Ducklow HW, Abele D, Ruiz Barlett EM, Buma AGJ, Meredith MP, Rozema PD, Schofield OM, Venables HJ, Schloss IR. Inter-decadal variability of phytoplankton biomass along the coastal West Antarctic Peninsula. Philos Trans A Math Phys Eng Sci 2018; 376:rsta.2017.0174. [PMID: 29760117 PMCID: PMC5954473 DOI: 10.1098/rsta.2017.0174] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/19/2018] [Indexed: 05/06/2023]
Abstract
The West Antarctic Peninsula (WAP) is a climatically sensitive region where periods of strong warming have caused significant changes in the marine ecosystem and food-web processes. Tight coupling between phytoplankton and higher trophic levels implies that the coastal WAP is a bottom-up controlled system, where changes in phytoplankton dynamics may largely impact other food-web components. Here, we analysed the inter-decadal time series of year-round chlorophyll-a (Chl) collected from three stations along the coastal WAP: Carlini Station at Potter Cove (PC) on King George Island, Palmer Station on Anvers Island and Rothera Station on Adelaide Island. There were trends towards increased phytoplankton biomass at Carlini Station (PC) and Palmer Station, while phytoplankton biomass declined significantly at Rothera Station over the studied period. The impacts of two relevant climate modes to the WAP, the El Niño-Southern Oscillation and the Southern Annular Mode, on winter and spring phytoplankton biomass appear to be different among the three sampling stations, suggesting an important role of local-scale forcing than large-scale forcing on phytoplankton dynamics at each station. The inter-annual variability of seasonal bloom progression derived from considering all three stations together captured ecologically meaningful, seasonally co-occurring bloom patterns which were primarily constrained by water-column stability strength. Our findings highlight a coupled link between phytoplankton and physical and climate dynamics along the coastal WAP, which may improve our understanding of overall WAP food-web responses to climate change and variability.This article is part of the theme issue 'The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change'.
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Affiliation(s)
- Hyewon Kim
- Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA
| | - Hugh W Ducklow
- Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA
| | - Doris Abele
- Alfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Eduardo M Ruiz Barlett
- Instituto Antártico Argentino, 25 de Mayo 1143, San Martín Pcia. de Buenos Aires C1064AAF, Argentina
| | - Anita G J Buma
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Groningen, The Netherlands
- Arctic Centre, University of Groningen, Groningen, The Netherlands
| | | | - Patrick D Rozema
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Groningen, The Netherlands
| | - Oscar M Schofield
- Rutgers University's Center for Ocean Observing Leadership (RU COOL), Department of Marine and Coastal Sciences, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 80901, USA
| | - Hugh J Venables
- British Antarctic Survey, High Cross, Madingley Road, Cambridge, UK
| | - Irene R Schloss
- Instituto Antártico Argentino, 25 de Mayo 1143, San Martín Pcia. de Buenos Aires C1064AAF, Argentina
- Centro Austral de Investigaciones Científicas, Bernardo Houssay 200, Ushuaia, Tierra del Fuego 9410, Argentina
- Universidad Nacional de Tierra del Fuego, H. Yrigoyen 879, Ushuaia, Tierra del Fuego 9410, Argentina
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Abele D, Vazquez S, Buma AGJ, Hernandez E, Quiroga C, Held C, Frickenhaus S, Harms L, Lopez JL, Helmke E, Mac Cormack WP. Pelagic and benthic communities of the Antarctic ecosystem of Potter Cove: Genomics and ecological implications. Mar Genomics 2017; 33:1-11. [PMID: 28479280 DOI: 10.1016/j.margen.2017.05.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 05/02/2017] [Accepted: 05/02/2017] [Indexed: 12/12/2022]
Abstract
Molecular technologies are more frequently applied in Antarctic ecosystem research and the growing amount of sequence-based information available in databases adds a new dimension to understanding the response of Antarctic organisms and communities to environmental change. We apply molecular techniques, including fingerprinting, and amplicon and metagenome sequencing, to understand biodiversity and phylogeography to resolve adaptive processes in an Antarctic coastal ecosystem from microbial to macrobenthic organisms and communities. Interpretation of the molecular data is not only achieved by their combination with classical methods (pigment analyses or microscopy), but furthermore by combining molecular with environmental data (e.g., sediment characteristics, biogeochemistry or oceanography) in space and over time. The studies form part of a long-term ecosystem investigation in Potter Cove on King-George Island, Antarctica, in which we follow the effects of rapid retreat of the local glacier on the cove ecosystem. We formulate and encourage new approaches to integrate molecular tools into Antarctic ecosystem research, environmental conservation actions, and polar ocean observatories.
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Affiliation(s)
- D Abele
- Dept. Biosciences, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27470 Bremerhaven, Germany.
| | - S Vazquez
- Universidad de Buenos Aires, CONICET, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 954, 1113 Buenos Aires, Argentina
| | - A G J Buma
- Dept. Ocean Ecosystems, Energy and Sustainability Research Groningen, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands
| | - E Hernandez
- Instituto Antártico Argentino (IAA), 25 de Mayo 1143, 1650 San Martin, Buenos Aires, Argentina
| | - C Quiroga
- Universidad de Buenos Aires, CONICET, Instituto de Medicina y Parasitologia Medica (IMPaM), Paraguay 2155 P.12, 1121 Buenos Aires, Argentina
| | - C Held
- Dept. Biosciences, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27470 Bremerhaven, Germany
| | - S Frickenhaus
- Dept. Biosciences, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27470 Bremerhaven, Germany
| | - L Harms
- Dept. Biosciences, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27470 Bremerhaven, Germany
| | - J L Lopez
- Universidad de Buenos Aires, Catedra de Virologia, Junín 954, 1113 Buenos Aires, Argentina
| | - E Helmke
- Dept. Biosciences, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27470 Bremerhaven, Germany
| | - W P Mac Cormack
- Instituto Antártico Argentino (IAA), 25 de Mayo 1143, 1650 San Martin, Buenos Aires, Argentina
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Abstract
Ballast water-mediated transfer of aquatic invasive species is considered a major threat to marine biodiversity, marine industry and human health. A ballast water treatment is needed to comply with International Maritime Organization (IMO) ballast water discharge regulations. Didecyldimethylammonium chloride (DDAC) was tested for its applicability as a ballast water treatment method. The treatment of the marine phytoplankton species Tetraselmis suecica, Isochrysis galbana and Chaetoceros calcitrans showed that at 2.5 µL L(-1) DDAC was able to inactivate photosystem II (PSII) efficiency and disintegrate the cells after 5 days of dark incubation. The treatment of natural marine plankton communities with 2.5 µL L(-1) DDAC did not sufficiently decrease zooplankton abundance to comply with the IMO D-2 standard. Bivalve larvae showed the highest resistance to DDAC. PSII efficiency was inactivated within 5 days but phytoplankton cells remained intact. Regrowth occurred within 2 days of incubation in the light. However, untreated phytoplankton exposed to residual DDAC showed delayed cell growth and reduced PSII efficiency, indicating residual DDAC toxicity. Natural marine plankton communities treated with 5 µL L(-1) DDAC showed sufficient disinfection of zooplankton and inactivation of PSII efficiency. Phytoplankton regrowth was not detected after 9 days of light incubation. Bacteria were initially reduced due to the DDAC treatment but regrowth was observed within 5 days of dark incubation. Residual DDAC remained too high after 5 days to be safely discharged. Two neutralization cycles of 50 mg L(-1) bentonite were needed to inactivate residual DDAC upon discharge. The inactivation of residual DDAC may seriously hamper the practical use of DDAC as a ballast water disinfectant.
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Affiliation(s)
- Cees van Slooten
- a Department of Biological Oceanography , NIOZ, Royal Netherlands Institute for Sea Research , Landsdiep 4, 1797 SZ Den Hoorn (Texel), The Netherlands
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Hernández EA, Piquet AMT, Lopez JL, Buma AGJ, Mac Cormack WP. Marine archaeal community structure from Potter Cove, Antarctica: high temporal and spatial dominance of the phylum Thaumarchaeota. Polar Biol 2014. [DOI: 10.1007/s00300-014-1569-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Fischer C, Ahlrichs WH, Buma AGJ, van de Poll WH, Bininda-Emonds ORP. How does the 'ancient' asexual Philodina roseola (Rotifera: Bdelloidea) handle potential UVB-induced mutations? ACTA ACUST UNITED AC 2013; 216:3090-5. [PMID: 23619410 DOI: 10.1242/jeb.087064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Like other obligate asexuals, bdelloid rotifers are expected to suffer from degradation of their genomes through processes including the accumulation of deleterious mutations. However, sequence-based analyses in this regard remain inconclusive. Instead of looking for historical footprints of mutations in these ancient asexuals, we directly examined the susceptibility and ability to repair point mutations by the bdelloid Philodina roseola by inducing cyclobutane-pyrimidine dimers (CPDs) via exposure to UVB radiation (280-320 nm). For comparison, we performed analogous experiments with the facultative asexual monogonont rotifer Brachionus rubens. Different strategies were found for the two species. Philodina roseola appeared to shield itself from CPD induction through uncharacterized UV-absorbing compounds and, except for the genome reconstruction that occurs after desiccation, was largely unable to repair UVB-induced damage. By contrast, B. rubens was more susceptible to UVB irradiation, but could repair all induced damage in ~2 h. In addition, whereas UV irradiation had a significant negative impact on the reproductive output of P. roseola, and especially so after desiccation, that of B. rubens was unaffected. Although the strategy of P. roseola might suffice under natural conditions where UVB irradiation is less intense, the lack of any immediate CPD repair mechanisms in this species remains perplexing. It remains to be investigated how typical these results are for bdelloids as a group and therefore how reliant these animals are on desiccation-dependent genome repair to correct potential DNA damage given their obligate asexual lifestyle.
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Affiliation(s)
- Claus Fischer
- AG Systematics and Evolutionary Biology, IBU-Faculty V, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.
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Alderkamp AC, Kulk G, Buma AGJ, Visser RJW, Van Dijken GL, Mills MM, Arrigo KR. THE EFFECT OF IRON LIMITATION ON THE PHOTOPHYSIOLOGY OF PHAEOCYSTIS ANTARCTICA (PRYMNESIOPHYCEAE) AND FRAGILARIOPSIS CYLINDRUS (BACILLARIOPHYCEAE) UNDER DYNAMIC IRRADIANCE(1). J Phycol 2012; 48:45-59. [PMID: 27009649 DOI: 10.1111/j.1529-8817.2011.01098.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The effects of iron limitation on photoacclimation to dynamic irradiance were studied in Phaeocystis antarctica G. Karst. and Fragilariopsis cylindrus (Grunow) W. Krieg. in terms of growth rate, photosynthetic parameters, pigment composition, and fluorescence characteristics. Under dynamic light conditions mimicking vertical mixing below the euphotic zone, P. antarctica displayed higher growth rates than F. cylindrus both under iron (Fe)-replete and Fe-limiting conditions. Both species showed xanthophyll de-epoxidation that was accompanied by low levels of nonphotochemical quenching (NPQ) during the irradiance maximum of the light cycle. The potential for NPQ at light levels corresponding to full sunlight was substantial in both species and increased under Fe limitation in F. cylindrus. Although the decline in Fv /Fm under Fe limitation was similar in both species, the accompanying decrease in the maximum rate of photosynthesis and growth rate was much stronger in F. cylindrus. Analysis of the electron transport rates through PSII and on to carbon (C) fixation revealed a large potential for photoprotective cyclic electron transport (CET) in F. cylindrus, particularly under Fe limitation. Probably, CET aided the photoprotection in F. cylindrus, but it also reduced photosynthetic efficiency at higher light intensities. P. antarctica, on the other hand, was able to efficiently use electrons flowing through PSII for C fixation at all light levels, particularly under Fe limitation. Thus, Fe limitation enhanced the photophysiological differences between P. antarctica and diatoms, supporting field observations where P. antarctica is found to dominate deeply mixed water columns, whereas diatoms dominate shallower mixed layers.
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Affiliation(s)
- Anne-Carlijn Alderkamp
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands Department of Environmental Earth System Science, Stanford University, Stanford, California 94305, USADepartment of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The NetherlandsDepartment of Environmental Earth System Science, Stanford University, Stanford, California 94305, USA
| | - Gemma Kulk
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands Department of Environmental Earth System Science, Stanford University, Stanford, California 94305, USADepartment of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The NetherlandsDepartment of Environmental Earth System Science, Stanford University, Stanford, California 94305, USA
| | - Anita G J Buma
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands Department of Environmental Earth System Science, Stanford University, Stanford, California 94305, USADepartment of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The NetherlandsDepartment of Environmental Earth System Science, Stanford University, Stanford, California 94305, USA
| | - Ronald J W Visser
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands Department of Environmental Earth System Science, Stanford University, Stanford, California 94305, USADepartment of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The NetherlandsDepartment of Environmental Earth System Science, Stanford University, Stanford, California 94305, USA
| | - Gert L Van Dijken
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands Department of Environmental Earth System Science, Stanford University, Stanford, California 94305, USADepartment of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The NetherlandsDepartment of Environmental Earth System Science, Stanford University, Stanford, California 94305, USA
| | - Matthew M Mills
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands Department of Environmental Earth System Science, Stanford University, Stanford, California 94305, USADepartment of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The NetherlandsDepartment of Environmental Earth System Science, Stanford University, Stanford, California 94305, USA
| | - Kevin R Arrigo
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The Netherlands Department of Environmental Earth System Science, Stanford University, Stanford, California 94305, USADepartment of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Nijenborgh 7, 9747 AG, Groningen, The NetherlandsDepartment of Environmental Earth System Science, Stanford University, Stanford, California 94305, USA
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Piquet AMT, Bolhuis H, Meredith MP, Buma AGJ. Shifts in coastal Antarctic marine microbial communities during and after melt water-related surface stratification. FEMS Microbiol Ecol 2011; 76:413-27. [PMID: 21303395 DOI: 10.1111/j.1574-6941.2011.01062.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Antarctic coastal waters undergo major physical alterations during summer. Increased temperatures induce sea-ice melting and glacial melt water input, leading to strong stratification of the upper water column. We investigated the composition of micro-eukaryotic and bacterial communities in Ryder Bay, Antarctic Peninsula, during and after summertime melt water stratification, applying community fingerprinting (denaturing gradient gel electrophoresis) and sequencing analysis of partial 18S and 16S rRNA genes. Community fingerprinting of the eukaryotic community revealed two major patterns, coinciding with a period of melt water stratification, followed by a period characterized by regular wind-induced breakdown of surface stratification. During the first stratified period, we observed depth-related differences in eukaryotic fingerprints while differences in bacterial fingerprints were weak. Wind-induced breakdown of the melt water layer caused a shift in the eukaryotic community from an Actinocyclus sp.- to a Thalassiosira sp.-dominated community. In addition, a distinct transition in the bacterial community was found, but with a few days' delay, suggesting a response to the changes in the eukaryotic community rather than to the mixing event itself. Sequence analysis revealed a shift from an Alpha- and Gammaproteobacteria to a Cytophaga-Flavobacterium-Bacteroides-dominated community under mixed conditions. Our results show that melt water stratification and the transition to nonstabilized Antarctic surface waters may have an impact not only on micro-eukaryotic but also bacterial community composition.
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Affiliation(s)
- Anouk M-T Piquet
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute, University of Groningen, Groningen, The Netherlands.
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Piquet AMT, Bolhuis H, Davidson AT, Buma AGJ. Seasonal succession and UV sensitivity of marine bacterioplankton at an Antarctic coastal site. FEMS Microbiol Ecol 2010; 73:68-82. [PMID: 20455939 DOI: 10.1111/j.1574-6941.2010.00882.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Despite extensive microbial biodiversity studies around the globe, studies focusing on diversity and community composition of Bacteria in Antarctic coastal regions are still scarce. Here, we studied the diversity and development of bacterioplankton communities from Prydz Bay (Eastern Antarctic) during spring and early summer 2002-2003. Additionally, we investigated the possible shaping effects of solar UV radiation (UV-R: 280-400 nm) on bacterioplankton communities incubated for 13-14 days in 650-L minicosm tanks. Ribosomal DNA sequence analysis of the natural bacterioplankton communities revealed an initial springtime community composed of three evenly abundant bacterial classes: Cytophaga-Flavobacteria-Bacteroidetes (CFB), Gammaproteobacteria and Alphaproteobacteria. At the end of spring, a shift occurred toward a CFB-dominated community, most likely a response to the onset of a springtime phytoplankton bloom. The tail end of Prydz Bay clone library diversity revealed sequences related to Deltaproteobacteria, Verrucomicrobiales, Planctomycetes, Gemmatimonadetes and an unclassified bacterium (ANT4E12). Minicosm experiments showed that incubation time was the principal determinant of bacterial community composition and that UV-R treatment significantly changed the composition in only two of the four experiments. Thus, the successional maturity of the microbial community in our minicosm studies appears to be a greater determinant of bacterial community composition rather than the nonprofound and subtle effects of UV-R.
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Affiliation(s)
- Anouk M-T Piquet
- Department of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Haren, The Netherlands.
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Janknegt PJ, de Graaff CM, van de Poll WH, Visser RJW, Helbling EW, Buma AGJ. Antioxidative Responses of Two Marine Microalgae During Acclimation to Static and Fluctuating Natural UV Radiation. Photochem Photobiol 2009; 85:1336-45. [DOI: 10.1111/j.1751-1097.2009.00603.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Brauer VS, de Jonge VN, Buma AGJ, Weissing FJ. Does universal temperature dependence apply to communities? An experimental test using natural marine plankton assemblages. OIKOS 2009. [DOI: 10.1111/j.1600-0706.2009.17371.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Piquet AMT, Bolhuis H, Davidson AT, Thomson PG, Buma AGJ. Diversity and dynamics of Antarctic marine microbial eukaryotes under manipulated environmental UV radiation. FEMS Microbiol Ecol 2008; 66:352-66. [PMID: 18801046 DOI: 10.1111/j.1574-6941.2008.00588.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
In the light of the predicted global climate change, it is essential that the status and diversity of polar microbial communities is described and understood. In the present study, molecular tools were used to investigate the marine eukaryotic communities of Prydz Bay, Eastern Antarctica, from November 2002 to January 2003. Additionally, we conducted four series of minicosm experiments, where natural Prydz Bay communities were incubated under six different irradiation regimes, in order to investigate the effects of natural UV radiation on marine microbial eukaryotes. Denaturing gradient gel electrophoresis (DGGE) and 18S rRNA gene sequencing revealed a eukaryotic Shannon diversity index averaging 2.26 and 2.12, respectively. Phylogenetic analysis of 472 sequenced clones revealed 47 phylotypes, belonging to the Dinophyceae, Stramenopiles, Choanoflagellidae, Ciliophora, Cercozoa and Metazoa. Throughout the studied period, three communities were distinguished: a postwinter/early spring community comprising dinoflagellates, ciliates, cercozoans, stramenopiles, viridiplantae, haptophytes and metazoans; a dinoflagellate-dominated community; and a diatom-dominated community that developed after sea ice breakup. DGGE analysis showed that size fraction and time had a strong shaping effect on the community composition; however, a significant contribution of natural UV irradiance towards microeukaryotic community composition could not be detected. Overall, dinoflagellates dominated our samples and their diversity suggests that they fulfill an important role in Antarctic coastal marine ecosystems preceding ice breakup as well as between phytoplankton bloom events.
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Affiliation(s)
- Anouk M-T Piquet
- Department of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Haren, The Netherlands.
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Janknegt PJ, Van De Poll WH, Visser RJW, Rijstenbil JW, Buma AGJ. OXIDATIVE STRESS RESPONSES IN THE MARINE ANTARCTIC DIATOM CHAETOCEROS BREVIS (BACILLARIOPHYCEAE) DURING PHOTOACCLIMATION(1). J Phycol 2008; 44:957-966. [PMID: 27041614 DOI: 10.1111/j.1529-8817.2008.00553.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The enzyme superoxide dismutase (SOD) holds a key position in the microalgal antioxidant network. The present research focused on oxidative stress responses in the Antarctic diatom Chaetoceros brevis F. Schütt during transition to excess (including ultraviolet radiation [UVR]) and limiting irradiance conditions. Over a 4 d period, cellular responses of thiobarbituric acid reactive substances (TBARS, a general oxidative stress indicator), SOD activity, photosynthetic and xanthophyll cycle pigments, PSII efficiency, and growth were determined. In addition, oxidative responses were measured during a daily cycle. Changing irradiance conditions significantly affected growth rates of C. brevis. PSII efficiency decreased significantly during periodic excess irradiance and increased under low irradiance conditions. Transition to excess irradiance increased the ratio of xanthophyll to light-harvesting pigments, whereas the opposite was observed for cultures transferred to low irradiance. This acclimation process was completed after 2 d in the new irradiance environment. SOD activity increased significantly after the first day regardless of the new irradiance environment but returned to preexposure values on the fourth day. We hypothesize that SOD activity may be temporarily elevated in C. brevis after irradiance shifts, thereby reducing oxidative stress when photoacclimation is in progress.
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Affiliation(s)
- Paul J Janknegt
- Department of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the NetherlandsAE3 Consultancy, Fuchsialaan 8, 4401 HV, Yerseke, the NetherlandsDepartment of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the Netherlands
| | - Willem H Van De Poll
- Department of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the NetherlandsAE3 Consultancy, Fuchsialaan 8, 4401 HV, Yerseke, the NetherlandsDepartment of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the Netherlands
| | - Ronald J W Visser
- Department of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the NetherlandsAE3 Consultancy, Fuchsialaan 8, 4401 HV, Yerseke, the NetherlandsDepartment of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the Netherlands
| | - Jan W Rijstenbil
- Department of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the NetherlandsAE3 Consultancy, Fuchsialaan 8, 4401 HV, Yerseke, the NetherlandsDepartment of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the Netherlands
| | - Anita G J Buma
- Department of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the NetherlandsAE3 Consultancy, Fuchsialaan 8, 4401 HV, Yerseke, the NetherlandsDepartment of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, the Netherlands
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Janknegt PJ, Rijstenbil JW, van de Poll WH, Gechev TS, Buma AGJ. A comparison of quantitative and qualitative superoxide dismutase assays for application to low temperature microalgae. Journal of Photochemistry and Photobiology B: Biology 2007; 87:218-26. [PMID: 17553689 DOI: 10.1016/j.jphotobiol.2007.04.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Revised: 03/28/2007] [Accepted: 04/02/2007] [Indexed: 10/23/2022]
Abstract
Antioxidant enzymes such as superoxide dismutase (SOD) play a key role in the removal of reactive oxygen species produced during visible and ultraviolet irradiance stress in microalgae and plants. However, little is known about the enzymatic antioxidative stress responses in ecologically important Antarctic marine microalgae. SOD in particular is difficult to analyze, possibly due to problems in obtaining sufficient quantities necessary for reliable and reproducible enzymatic assays. The aim of the present work was to create a sensitive, easy-to-use and reliable method for SOD determination in Antarctic microalgal material by comparing and optimizing existing protein extraction procedures and SOD assays in the marine Antarctic diatom Chaetoceros brevis. Optimization was achieved in cell disruption (sonication) and protein extraction procedures, extraction buffers, SOD assay methods (xanthine/xanthine oxidase and NBT/riboflavin photometric quantitative methods and native gel electrophoresis qualitative method) and the assay temperature. Protein extraction was optimal at low sonication amplitudes after a few pulses, irrespective of the type of buffer used. Extraction efficiency varied highly between the tested buffers; most protein was extracted in the presence of 1% of Triton X-100. SOD activity was best quantified using the NBT/riboflavin method in combination with a buffer containing potassium phosphate and Triton X-100. Moreover, the NBT/riboflavin method was demonstrated to be the most reliable and sensitive method at low temperatures (5 degrees C).
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Affiliation(s)
- Paul J Janknegt
- Department of Ocean Ecosystems, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9750 AA Haren, The Netherlands.
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George AL, Peat HJ, Buma AGJ. Evaluation of DNA Dosimetry to Assess Ozone-Mediated Variability of Biologically Harmful Radiation in Antarctica¶. Photochem Photobiol 2007. [DOI: 10.1562/0031-8655(2002)0760274eoddta2.0.co2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Poll WH, Hanelt D, Hoyer K, Buma AGJ, Breeman AM. Ultraviolet-B-Induced Cyclobutane-pyrimidine Dimer Formation and Repair in Arctic Marine Macrophytes¶. Photochem Photobiol 2007. [DOI: 10.1562/0031-8655(2002)0760493ubicpd2.0.co2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
The significance of ultraviolet-B radiation (UVBR: 280-315 nm)-induced DNA damage as a stress factor for Arctic marine macrophytes was examined in the Kongsfjord (Spitsbergen, 78 degrees 55.5'N, 11 degrees 56.0'E) in summer. UVBR penetration in the water column was monitored as accumulation of cyclobutane-pyrimidine dimers (CPD) in bare DNA. This showed that UVBR transparency of the fjord was variable, with 1% depths ranging between 4 and 8 m. In addition, induction and repair kinetics of CPD were studied in several subtidal macrophytes obtained from the Kongsfjord (5-15 m). Surface exposure experiments demonstrated CPD accumulation in Palmaria palmata, Devaleraea ramentacea, Phycodrys rubens, Coccotylus truncatus and Odonthalia dentata. In artificial light, field collected material of P. palmata, D. ramentacea, P. rubens and Laminaria saccharina showed efficient CPD repair, with only 10% of the artificially induced CPD remaining after 5 h. No significant differences in repair rate were observed among these species. CPD repair was slower or absent in O. dentata, C. truncatus and Monostroma arcticum, indicating that fast repair mechanisms such as photolyase were not continuously expressed in these species. CPD repair rates were not directly related to the vertical distribution of algae in the water column and to the reported UV sensitivity of the examined species. Dosimeter incubations showed that maximal exposure to DNA damaging wavelengths was low for all examined species. Furthermore, most species collected below the 1% depth for DNA damage displayed efficient CPD repair, suggesting that UVBR-induced CPD currently impose a minor threat for mature stages of these species growing in the Kongsfjord, Spitsbergen.
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Affiliation(s)
- Willem H van de Poll
- Department of Marine Biology, Center for Ecological and Evolutionary Studies, University of Groningen, The Netherlands.
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Abstract
In this study we investigated the use of a DNA dosimeter to accurately measure changes in ultraviolet B radiation (UVBR; 280-315 nm) under Antarctic ozone hole conditions. Naked DNA solution in quartz tubes was exposed to ambient solar radiation at Rothera Research Station, Antarctica, between October and December 1998 for 3 h during UVBR peak hours (1200-1500 h). Trends in UVBR-mediated DNA damage (formation of cyclobutane pyrimidine dimers [CPD]) were related to cloud cover, ozone-column depth and spectroradiometric measurements of ambient radiation. Ozone-column depths ranged from 130 to 375 DU during the study period, resulting in highly variable UVBR doses, from 1.6 to 137 kJ m(-2) over the 3 h exposure, as measured by spectroradiometry. There was a strong positive correlation (86%) between dosimeter CPD concentrations and DNA-weighted UVBR doses. Ozone depth was a strong predictor of DNA damage (63%), and there was no significant relationship between CPD formation and cloud cover. Subtle changes in spectral characteristics caused by ozone depletion were detected by the biodosimeter; the highest CPD concentrations were observed in October when ozone-mediated shifts favored shorter wavelengths of UVBR. We conclude that the DNA biodosimeter is an accurate indicator of biologically effective UVBR, even under highly variable ozone conditions.
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Affiliation(s)
- Alison L George
- British Antarctic Survey, Natural Environment Research Council, Cambridge, UK.
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Boelen P, Post AF, Veldhuis MJW, Buma AGJ. Diel patterns of UVBR-induced DNA damage in picoplankton size fractions from the Gulf of Aqaba, Red Sea. Microb Ecol 2002; 44:164-174. [PMID: 12060864 DOI: 10.1007/s00248-002-1002-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2001] [Accepted: 03/15/2002] [Indexed: 05/23/2023]
Abstract
This study focuses on the impact of natural levels of UVBR (ultraviolet-B radiation: 280 to 315 nm) on bacterio- and phytoplankton (<10 microm) from the Gulf of Aqaba, Red Sea. Incident biologically effective doses (BEDs) and attenuation of biologically effective radiation in the water column were measured using a DNA biodosimeter. UVBR-induced DNA damage was measured as cyclobutane pyrimidine dimers (CPDs), using an antibody directed to CPDs followed by chemiluminescent detection. Depth profiles of DNA damage were determined in two plankton size fractions (0.2 to 0.8 microm and 0.8 to 10 microm) collected down to 50 m depth. Furthermore, accumulation and removal of CPDs were monitored in surface plankton samples during several daily cycles. Small plankton (plankton <10 microm) composition was determined by flow cytometry. The plankton community in the Gulf of Aqaba was dominated by nonphototrophic bacteria and the free-living prochlorophyte Prochlorococcus spp. (<0.8 microm). In general, no DNA damage could be detected in dosimeter DNA below 15 m. In contrast, DNA damage (up to 124 CPD Mnucl-1) could be detected in all bacterio- and phytoplankton samples. DNA damage accumulated throughout the day, indicating that plankton in the Gulf of Aqaba undergo UVBR stress via CPD induction. Although the numbers of CPDs decreased during darkness, both size fractions showed some residual DNA damage at the end of the night. This suggests that dark repair processes did not remove all CPDs, or that part of the plankton community was incapable of repair at all. CPD levels in the two size fractions showed no significant differences in situ. During full solar radiation exposures (samples incubated in bags), more CPDs were detected in the smaller (0.2 to 0.8 microm) size fraction as compared to the larger (0.8 to 10 microm) size fraction. In these experiments, initial plankton composition was significantly different from the field samples. This implies that a shift in the population structure or irradiance conditions can lead to a significant change in UVBR sensitivity. In conclusion, the results show that the picoplankton-dominated phyto- and bacterioplankton communities in the clear surface waters from the Gulf of Aqaba undergo UVBR stress. Repair pathways are not sufficient to eliminate damage during or after UVBR exposure hours, suggesting photomortality as a potential loss parameter of the plankton community.
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Affiliation(s)
- P Boelen
- Department of Marine Biology, Centre for Ecological and Evolutionary Studies, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands.
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Boelen P, Obernostere I, Vink AA, Buma AGJ. Attenuation of Biologically Effective UV Radiation in Tropical Atlantic Waters Measured with a Biochemical DNA Dosimeter. Photochem Photobiol 1999. [DOI: 10.1111/j.1751-1097.1999.tb05303.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Steeneken SF, Buma AGJ, Gieskes WWC. CHANGES IN TRANSMISSION CHARACTERISTICS OF POLYMETHYLMETHACRYLATE AND CELLULOSE (III) ACETATE DURING EXPOSURE TO ULTRAVIOLET LIGHT. Photochem Photobiol 1995. [DOI: 10.1111/j.1751-1097.1995.tb03971.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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