The role of platelet ice microalgae in seeding phytoplankton blooms in Terra Nova Bay (Ross Sea, Antarctica): a mesocosm experiment

被引:36
作者
Mangoni, Olga [1 ]
Saggiomo, Maria [2 ]
Modigh, Monica [2 ]
Catalano, Giulio [3 ]
Zingone, Adriana [2 ]
Saggiomo, Vincenzo [2 ]
机构
[1] Univ Naples Federico II, Dipartimento Sci Biol, I-80134 Naples, Italy
[2] Staz Zool Anton Dohrn, I-80121 Naples, Italy
[3] CNR, Ist Sci Marine, I-34123 Trieste, Italy
关键词
Ross Sea; Terra Nova Bay; Platelet ice; Diatoms; Species composition; Seeding; PHOTOSYNTHESIS-IRRADIANCE RELATIONSHIPS; SOUTHERN WEDDELL SEA; LAND-FAST ICE; MCMURDO-SOUND; MICROBIAL COMMUNITIES; FRAGILARIOPSIS-CYLINDRUS; EUPHAUSIA-SUPERBA; ADELIE LAND; ASSEMBLAGES; SUCCESSION;
D O I
10.1007/s00300-008-0507-z
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
The aim of this study was to assess the role of platelet ice microalgal communities in seeding pelagic blooms. Nutrient dynamics, microalgal biomass, photosynthetic parameters, cell densities and species succession were studied in two mesocosm experiments, designed to simulate the transition of microalgal communities from platelet ice habitat to pelagic conditions. The microalgal assemblages were dominated by diatoms, 70% of which were benthic species such as Amphiprora kufferathii, Nitzschia stellata, and Berkeleya adeliensis. Photoacclimation of benthic species was inadequate also at relatively low irradiances. Exceptional growth capacity at different light levels was observed for pelagic species such as Fragilariopsis cylindrus and Chaetoceros spp. which may be important in seeding blooms at ice breakup. Fragilariopsis cylindrus showed high growth rates both at 65 and 10% of incident light and in nutrient replete as well as in nutrient depleted conditions. Five days after inoculation, phytoplankton biomass increased and nutrient concentrations decreased in both light conditions. Nutrient uptake rates were up to 9.10 mu mol L-1 d(-1) of TIN in the high light tank and 6.18 mu mol L-1 d(-1) in the low light tank and nutrient depletion in the high light tank occurred 3 days prior to depletion in the low light tank. At nutrient depletion, biomass concentrations were similar in both tanks, 30 and 34 mu g Chla L-1.
引用
收藏
页码:311 / 323
页数:13
相关论文
共 44 条
[41]   A nursery area for the Antarctic silverfish Pleuragramma antarcticum at Terra Nova Bay (Ross Sea): first estimate of distribution and abundance of eggs and larvae under the seasonal sea-ice [J].
Marino Vacchi ;
Arthur L. DeVries ;
Clive W. Evans ;
Massimiliano Bottaro ;
Laura Ghigliotti ;
Laura Cutroneo ;
Eva Pisano .
Polar Biology, 2012, 35 :1573-1585
[42]   Seasonal Variations in the Biochemical Compositions of Phytoplankton and Transparent Exopolymer Particles (TEPs) at Jang Bogo Station (Terra Nova Bay, Ross Sea), 2017-2018 [J].
Park, Sanghoon ;
Park, Jisoo ;
Yoo, Kyu-Cheul ;
Yoo, Jaeill ;
Kim, Kwanwoo ;
Jo, Naeun ;
Jang, Hyo-Keun ;
Kim, Jaehong ;
Kim, Jaesoon ;
Kim, Joonmin ;
Lee, Sang-Heon .
WATER, 2021, 13 (16)
[43]   Crude oil-induced structural shift of coastal bacterial communities of rod bay (Terra Nova Bay, Ross Sea, Antarctica) and characterization of cultured cold-adapted hydrocarbonoclastic bacteria [J].
Yakimov, MM ;
Gentile, G ;
Bruni, V ;
Cappello, S ;
D'Auria, G ;
Golyshin, PN ;
Giuliano, L .
FEMS MICROBIOLOGY ECOLOGY, 2004, 49 (03) :419-432
[44]   Microglena antarctica sp. nov. a New Antarctic Green Alga from Inexpressible Island (Terra Nova Bay, Ross Sea) Revealed through an Integrative Approach [J].
Trentin, Riccardo ;
Negrisolo, Enrico ;
Moschin, Emanuela ;
Veronese, Davide ;
Cecchetto, Matteo ;
Moro, Isabella .
DIVERSITY-BASEL, 2022, 14 (05)