Diversity, density and photo-physiology of micro-phytoplankton from degraded and non-degraded reefs around Rodrigues Island, Western Indian Ocean

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MOUNESHWAR SOONDUR
DEEPEEKA KAULLYSING
SUNDY RAMAH
RANJEET BHAGOOLI

Abstract

Abstract. Soondur M, Kaullysing K, Ramah S, Bhagooli R. 2023. Diversity, density and photo-physiology of micro-phytoplankton from degraded and non-degraded reefs around Rodrigues Island, Western Indian Ocean. Indo Pac J Ocean Life 7: 108-121. This study aimed at investigating the variations in micro-phytoplankton diversity, density and photo-physiology between a degraded, Anse Aux Anglais (AAA) in the north, and a non-degraded, Port Sud-Est (PSE) in the southeast, reefs around Rodrigues Island, Republic of Mauritius. Sampling was carried out in summer and winter seasons from 2016 to 2019 at the two sites, PSE and AAA. Micro-phytoplankton samples were collected using a plankton net of 5µm and conserved with Lugol’s solution. Physico-chemical parameters namely temperature, dissolved oxygen, salinity, and ph were recorded in situ. Seawater samples were collected for nutrient and chlorophyll-a concentration analyses. The Total Micro-Phytoplankton Densities (TMPD) did not differ seasonally for the whole period from 2016 until 2019 but there was a significant difference station-wise (P < 0.01), with higher TMPD recorded at the non-degraded reef of PSE. PSE exhibited the higher species diversity. Diatoms and dinoflagellates were more abundant at PSE while the cyanobacteria showed higher densities at AAA. Genera like Licmorphora, Gonyaulax, Polykrikos, Trichodesmium, and Lygnbya, reported worldwide to possibly cause mortality and/or changing community structure of corals, were recorded at both PSE and AAA though not at blooming densities. Photo-physiological assessment of micro-phytoplankton, using a Diving Pulse-Amplitude-Modulated (D-PAM) fluorometer, varied significantly both seasonally and spatially. These findings indicated that the non-degraded reef site had higher micro-phytoplankton density, diversity and photo-physiological performance than the degraded one, implying that degraded reefs may not only be characterized by the benthic cover and/or their health status but also the biological parameters from the water column.

2017-01-01

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References
Abdo DA, Bellchambers LM, Evans SN. 2012. Turning up the Heat: Increasing temperature and coral bleaching at the high latitude coral reefs of the Houtman Abrolhos Islands. PLoS ONE 7: e43878. DOI: 10.1371/journal.pone.0043878.
Acker JG, Leptoukh G. 2007. Online analysis enhances use of NASA Earth Science Data. Eos Trans AGU 88: 14. DOI: 10.1029/2007EO020003.
Ahamada S, Bijoux J, Cauvin B, Hagan A, Harris A, Koonjul M, Meunier S, Quod J-P. 2008. Status of the Coral Reefs of the South-West Indian Ocean Island States: Comoros, Madagascar, Mauritius, Reunion, Seychelles 7.
Armance M, Mattan-Moorgawa S, Bhagooli R. 2019. Micro-phytoplankton density and diversity at a pilot oyster culture barachois site of Mauritius Island. Ocean Life 3 (1): 1-12 DOI: 10.13057/oceanlife/o030101.
Aubry FB, Acri F, Bastianini M, Bianchi F, Cassin D, Pugnetti A, Socal G. 2006. Seasonal and interannual variations of phytoplankton in the Gulf of Venice (Northern Adriatic Sea). Chem Ecol 22: S71-S91. DOI: 10.1080/02757540600687962.
Barlow R, Lamont T, Gibberd MJ, Airs R, Jacobs L, Britz K. 2017. Phytoplankton communities and acclimation in a cyclonic eddy in the southwest Indian Ocean. Deep Sea Research Part I: Oceanographic Research Papers 124: 18-30 DOI: 10.1016/j.dsr.2017.03.013.
Bazin P, Jouenne F, Friedl T, Deton-Cabanillas A-F, Le Roy B, Véron B. 2014. Phytoplankton diversity and community composition along the estuarine gradient of a temperate macrotidal ecosystem: Combined morphological and molecular approaches. PLoS ONE 9: E94110. DOI: 10.1371/journal.pone.0094110.
Bell JJ, Davy SK, Jones T, Taylor MW, Webster NS. 2013. Could some coral reefs become sponge reefs as our climate changes? Glob Change Biol 19: 2613-2624. DOI: 10.1111/gcb.12212.
Bhagooli R, Hidaka M. 2003. Comparison of stress susceptibility of in hospite and isolated zooxanthellae among five coral species. J Exp Mar Biol Ecol 291: 181-197. DOI: 10.1016/S0022-0981(03)00121-7.
Bhagooli R, Kaullysing D. 2019. Seas of Mauritius. In: Sheppard CCR (eds). World Seas: An Environmental Evaluation, Vol. II: The Indian Ocean to the Pacific (2nd edn). Elsevier, Academic Press, Amsterdam, Netherlands. DOI: 10.1016/B978-0-08-100853-9.00016-6.
Bhagooli R, Mattan-Moorgawa S, Kaullysing D, Chumun PK, Klaus R, Munbodhe V. 2021a. Status and Sustainability of Reefs and Shorelines of the Republic of Mauritius (2021). In: Gunputh RP (Eds). Sustainable Development Goals. Star Publications Pvt. Ltd., New Delhi, India.
Bhagooli R, Mattan-Moorgawa S, Kaullysing D, Louis YD, Gopeechund A, Ramah S, Soondur M, Pilly SS, Beesoo R, Wijayawanti DP, Bachok ZB, Monrás VC, Casareto BE, Suzuki Y, Baker AC. 2021b. Chlorophyll fluorescence - a tool to assess photosynthetic performance and stress photo-physiology in symbiotic marine invertebrates and seaplants. Mar Pollut Bull 165: 112059. DOI: 10.1016/j.marpolbul.2021.112059.
Burke L, Selig E, Spalding M. 2002. Reef at Risk in Southeast Asia. World Resources Institute (WRI). Washington DC, USA.
Caspers H. 1970. JDH Strickland and TR Parsons: A Practical Handbook of Seawater Analysis. Ottawa: Fisheries Research Board of Canada, Bulletin 167, 1968. DOI: /10.1002/iroh.19700550118.
Cembella AD, Lewis NI, Quilliam MA. 2000. The marine dinoflagellate Alexandrium ostenfeldii (Dinophyceae) as the causative organism of spirolide shellfish toxins. Phycologia 39: 67-74. DOI:10.2216/i0031-8884-39-1-67.1.
Charpy L, Palinska KA, Casareto B, Langlade MJ, Suzuki Y, Abed RMM, Golubic S. 2010. Dinitrogen-fixing Cyanobacteria in microbial mats of two shallow coral reef ecosystems. Microb Ecol 59: 174-186. DOI: 10.1007/s00248-009-9576-y.
Coello-Camba A, Agustí S. 2017. Thermal thresholds of phytoplankton growth in polar waters and their consequences for a warming polar ocean. Front Mar Sci 4: 168. DOI: 10.3389/fmars.2017.00168.
D’Angelo C, Wiedenmann J. 2014. Impacts of nutrient enrichment on coral reefs: New perspectives and implications for coastal management and reef survival. Curr Opin Environ Sustain 7: 82-93. DOI: 10.1016/j.cosust.2013.11.0.
Dauta A, Devaux J, Piquemal F, Boumnich L. 1990. Growth rate of four freshwater algae in relation to light and temperature. Hydrobiologia 207: 221-226. DOI: 10.1007/BF00041459.
Devassy VP, Goes JI. 1991. Phytoplankton Assemblages and Pigments in the Exclusive Economic Zone of Mauritius (Indian Ocean). NISCAIR, New Delhi.
Edgar GJ, Stuart-Smith RD, Willis TJ, Kininmonth S, Baker SC, Banks S, Barrett NS, Becerro MA, Bernard ATF, Berkhout J, Buxton CD, Campbell SJ, Cooper AT, Davey M, Edgar SC, Försterra G, Galván DE, Irigoyen AJ, Kushner DJ, Moura R, Parnell PE, Shears NT, Soler G, Strain EMA, Thomson RJ. 2014. Global conservation outcomes depend on marine protected areas with five key features. Nature 506: 216-220. DOI: 10.1038/nature13022.
El Gammal MAM, Nageeb M, Al-Sabeb S. 2017. Phytoplankton abundance in relation to the quality of the coastal water - Arabian Gulf, Saudi Arabia. Egypt. J Aquat Res 43: 275-282. DOI:10.1016/J.EJAR.2017.10.004.
Fenner D, Clark TH, Turner JR, Chapman B. 2004. A checklist of the corals of the island state of Rodrigues, Mauritius. J Natural Hist 38: 3091-3102. DOI: 10.1080/00222930410001720395.
Ferrier-Pagès C, Gattuso J, Jaubert J. 1999. Effect of small variations in salinity on the rates of photosynthesis and respiration of the zooxanthellate coral Stylophora pistillata. Mar Ecol Prog Ser 181: 309-314. DOI: 10.3354/meps181309.
Foster KA, Foster G, Tourenq C, Shuriqi MK. 2011. Shifts in coral community structures following cyclone and red tide disturbances within the Gulf of Oman (United Arab Emirates). Mar Biol 158: 955-968. DOI: 10.1007/s00227-010-1622-2.
Gardner TA, Côté IM, Gill JA, Grant A, Watkinson AR. 2003. Long-term region-wide declines in Caribbean corals. Science 301: 958-960. DOI: 10.1126/science.1086050.
Geider R, La Roche J. 2002. Redfield revisited: Variability of C:N:P in marine microalgae and its biochemical basis. Eur J Phycol 37: 1-17. DOI: 10.1017/S0967026201003456.
Greenberg J, Solomon S, Pyszczynski T, Rosenblatt A, Burling J, Lyon D, Simon L, Pinel E. Why do people needself-esteem? Converging evidence that self-esteem serves an anxiety-buffering function. J Personal Soc Psychol 63: 913-922. DOI: 10.1037/0022-3514.63.6.913.
Guzmán H, Cortés J, Glynn P, Richmond R. 1990. Coral mortality associated with dino-flagellate blooms in the eastern Pacific (Costa Rica and Panama). Mar Ecol Prog Ser 60: 299-303. DOI: 10.3354/meps060299.
Hallock P. 2005. Global change and modern coral reefs: New opportunities to understand shallow-water carbonate depositional processes. Sediment Geol 175: 19-33. DOI: 10.1016/j.sedgeo.2004.12.027.
Hardman E, Meunier MS, Turner J, Lynch T, Taylor M, Klaus R. 2004. The extent of coral bleaching in Rodrigues, 2002. J Natural Hist 38: 3077-3089. DOI: 10.1080/00222930410001695051.
Hughes TP, Anderson KD, Connolly SR et al. 2018. Spatial and temporal patterns of mass bleaching of corals in the Anthropocene. Science 359 (6371): 80-83. DOI: 10.1126/science.aan8048.
Hughes TP, Kerry JT, Álvarez-Noriega M et al. 2017. Global warming and recurrent mass bleaching of corals. Nature 543: 373-377. DOI: 10.1038/nature21707.
Jackson EJ, Donovan M, Cramer K, Lam V. 2014. Status and Trends of Caribbean Coral Reefs: 1970-2012. Global Coral Reef Monitoring Network, IUCN, Gland, Switzerland.
Jeffrey SW, Humphrey GF. 1975. New spectrophotometric equations for determining chlorophylls a, b, c1 and c2 in higher plants, algae and natural phytoplankton. Biochemie und Physiologie der Pflanzen 167: 191-194. DOI: 10.1016/S0015-3796(17)30778-3.
Jokiel PL, Rodgers KS, Brown EK, Kenyon JC, Aeby G, Smith WR, Farrell F. 2015. Comparison of methods used to estimate coral cover in the Hawaiian Islands. Peerj 3: e954. DOI: 10.7717/peerj.954.
Karl D, Michaels A, Bergman B, Capone D, Carpenter E, Letelier R, Lipschultz F, Paerl H, Sigman D, Stal L. 2002. Dinitrogen fixation in the world’s oceans. In: Boyer EW, Howarth RW (Eds). The Nitrogen Cycle at Regional to Global Scales. Springer Netherlands, Dordrecht. DOI: 10.1007/978-94-017-3405-9_2.
Karthikeyan P, Manimaran K, Sampathkumar P, Rameshkumar L. 2013. Growth and nutrient removal properties of the diatoms, Chaetoceros curvisetus and C. simplex under different nitrogen sources. Appl Water Sci 3: 49-55. DOI: 10.1007/s13201-012-0056-z.
Kashino Y, Kudoh S, Hayashi Y, Suzuki Y, Odate T, Hirawake T, Satoh K, Fukuchi M. 2002. Strategies of phytoplankton to perform effective photosynthesis in the North Water. Deep-Sea Res II 49: 5049-5061. DOI: 10.1016/S0967-0645(02)00177-7.
Kokfelt U, Struyf, E, Randsalu L. 2009. Diatoms in peat - Dominant producers in a changing environment? Soil Biol Biochem 41: 1764-1766. DOI: 10.1016/j.soilbio.2009.05.012.
Kraus R, Supi? N. 2011. Impact of circulation on high phytoplankton blooms and fish catch in the northern Adriatic (1990-2004). Estuar Coast Shelf Sci 91: 198-210. DOI: 10.1016/j.ecss.2010.10.021.
Kuffner I, Walters L, Becerro M, Paul V, Ritson-Williams R, Beach K. 2006. Inhibition of coral recruitment by macroalgae and cyanobacteria. Mar Ecol Prog Ser 323: 107-117. DOI: 10.3354/meps323107.
Larson CA, Belovsky GE. 2013. Salinity and nutrients influence species richness and evenness of phytoplankton communities in microcosm experiments from Great Salt Lake, Utah, USA. J Plankton Res 35: 1154-1166. DOI: 10.1093/plankt/fbt053.
Levine SN, Borchardt MA, Braner M, Shambaugh AD. 1999. The impact of zooplankton grazing on phytoplankton species composition and biomass in Lake Champlain (USA-Canada). J Gt Lakes Res 25: 61-77. DOI :10.1016/S0380-1330(99)70717-3.
Liu D. 2008. Phytoplankton Diversity and Ecology in Estuaries of Southeastern NSW, Australia. [Thesis]. School of Earth & Environmental Sciences, University of Wollongong. [Australian]
Longhurst AR. 1976. Interactions between zooplankton and phytoplankton profiles in the eastern tropical Pacific Ocean. Deep Sea Research and Oceanographic Abstracts 23: 729-754. DOI: 10.1016/S0011-7471(76)80017-4.
Lowry R, Pugh DT, Wijeratne EMS, 2009. Observations of seiching and tides around the Islands of Mauritius and Rodrigues. West Indian Ocean J Mar Sci 7 (1): 15-28.
Marra J, Bidigare RR, Dickey TD. 1990. Nutrients and mixing, chlorophyll and phytoplankton growth. Deep Sea Research Part A. Oceanographic Research Papers 37: 127-143. DOI: 10.1016/0198-0149(90)90032-Q.
Marubini F, Atkinson M. 1999. Effects of lowered ph and elevated nitrate on coral calcification. Mar Ecol Prog Ser 188: 117-121. DOI: 10.3354/meps188117.
Mcclanahan TR, Ateweberhan M, Muhando CA, Maina J, Mohammed MS. 2007. Effects of climate and seawater temperature variation on coral bleaching and mortality. Ecol Monogr 77: 503-525. DOI: 10.1890/06-1182.1.
Mccormick MI, Barry RP, Allan BJM. 2017. Algae associated with coral degradation affects risk assessment in coral reef fishes. Sci Rep 7: 16937. DOI: 10.1038/s41598-017-17197-1.
Mcculloch M, Falter J, Trotter J, Montagna P. 2012. Coral resilience to ocean acidification and global warming through ph up-regulation. Nat Clim Change 2: 623-627. DOI: 10.1038/nclimate1473.
Mcminn A, Ashworth C, Bhagooli R, Martin A, Salleh A, Ralph P, Ryan K. 2012. Antarctica coastal microalgal primary production and photosynthesis. Mar Biol 159 (12): 2827-2837. DOI: 10.1007/s00227-012-2044-0.
Mcminn A, Hegseth EN. 2004. Quantum yield and photosynthetic parameters of marine microalgae from the southern Arctic Ocean, Svalbard. Journal of the Marine Biological Association of the UK 84: 865-871. DOI: 10.1017/s0025315404010112h.
Mcminn A, Hirawake T, Hamaoka T, Hattori H, Fukuchi M. 2005. Contribution of benthic microalgae to ice covered coastal ecosystems in northern Hokkaido, Japan. J Mar Biol Assoc UK 85: 283-289. DOI: 10.1017/s0025315405011173h.
Mcminn A, Pankowskii A, Ashworth C, Bhagooli R, Ralph PJ, Ryan K. 2010. In situ net primary productivity and photosynthesis of Antarctic sea ice algal, phytoplankton and benthic algal communities. Mar Biol 157 (6): 1345-1356. DOI: 10.1007/s00227-010-1414-8.
Mukherjee A, Das, S, Bhattacharya T, De M, Maiti T, Kumar De T. 2014. Optimization of phytoplankton preservative concentrations to reduce damage during long-term storage. Biopreserv Biobank 12: 139-147. DOI: 10.1089/bio.2013.0074.
Munday PL, Mccormick MI, Nilsson GE. 2012. Impact of global warming and rising CO2 levels on coral reef fishes: What hope for the future? J Exp Biol 215: 3865-3873. DOI: 10.1242/jeb.074765.
Oliver RL, Whittington J, Lorenz Z, Webster IT. 2003. The in?uence of vertical mixing on the photoinhibition of variable chlorophyll a ?uorescence and its inclusion in a model of phytoplankton photosynthesis. J Plankton Res 25: 1107-1129. DOI: 10.1093/plankt/25.9.1107.
Orellana-Cepeda E, Granados-Machuca C, Serrano-Esquer J. 2004. Ceratium furca: One possible cause of mass mortality of cultured blue fin tuna at Baja California, Mexico. In: Steidinger KA, Landsberg JH, Tomas CR, Vargo GA (Eds.). Harmful Algae 2002 (514-516). Florida Fish and Wildlife Conservation Comission, Florida Institute of Oceanography and Intergovernmental Oceanographic Comission of UNESCO, St. Petersburg, FL, USA.
Paerl H.W, Valdes-Weaver L.M, Joyner A.R, Winkelmann V. 2007. Phytoplankton indicators of ecological change in the eutrophying pamlico sound system, North Carolina. Ecol Appl 17: S88-S101. DOI: 10.1890/05-0840.1.
Platt T, Jassby AD. 1976. The relationship between photosynthesis and light for natural assemblages of coastal marine phytoplankton. J Phycol 12: 421-430. DOI: 10.1111/j.1529-8817.1976.tb02866.x.
Prada F, Caroselli E, Mengoli S, Brizi L, Fantazzini P, Capaccioni B, Pasquini L, Fabricius KE, Dubinsky Z, Falini G, Goffredo S. 2017. Ocean warming and acidification synergistically increase coral mortality. Sci Rep 7: 40842. DOI: 10.1038/srep40842.
Ralph PJ, Gademann R. 2005. Rapid light curves: A powerful tool to assess photosynthetic activity. Aquat Bot 82: 222-237. DOI: 10.1016/j.aquabot.2005.02.006.
Rasconi S, Winter K, Kainz MJ. 2017. Temperature increase and fluctuation induce phytoplankton biodiversity loss - Evidence from a multi-seasonal mesocosm experiment. Ecol Evol 7: 2936-2946. DOI: 10.1002/ece3.2889.
Ridder NN, England MH. 2014. Sensitivity of ocean oxygenation to variations in tropical zonal wind stress magnitude. Glob Biogeochem Cycles 28: 909-926. DOI: 10.1002/2013GB004708.
Sadally SB, Nazurally N, Taleb-Hossenkhan N, Bhagooli R. 2014b. Micro-phytoplankton distribution and biomass in and around a channel-based fish farm: implications for sustainable aquaculture. Acta Oceanol Sin 33: 180-191. DOI: 10.1007/s13131-014-0577-4.
Sadally SB, Taleb-Hossenkhan N, Bhagooli R. 2012. Micro-phytoplankton distribution and biomass at two lagoons around Mauritius Island. Special Issue on Sustainable Marine Environment, University of Mauritius Research Journal 18A: 54-87.
Sadally SB, Taleb-Hossenkhan N, Bhagooli R. 2014a. Spatio-temporal variation in density of microphytoplankton genera in two tropical coral reefs of Mauritius. Afr J Mar Sci 36: 423-438. DOI: 10.2989/1814232X.2014.973445.
Sadally SB, Taleb-Hossenkhan N, Bhagooli R. 2016. Microalgal distribution, diversity and photo-physiological performance across five tropical ecosystems around Mauritius Island. West Indian Ocean J Mar Sci 15 (1): 49-68.
Sadally SB, Taleb-Hossenkhan N, Casareto B, Suzuki Y, Bhagooli R. 2015. Micro-tidal dependent micro-phytoplankton C-biomass dynamics of two shallow tropical coral reefs. West Indian Ocean J Mar Sci 14 (1-2): 53-72.
Sandooyea S, Avé H, Soondur M, Kaullysing D, Bhagooli R. 2020. Variations in the density and diversity of micro-phytoplankton and micro-zooplankton in summer months at two coral reef sites around Mauritius Island. J Sustain Sci Manag 15: 18-33. DOI: 10.46754/jssm.2020.06.003.
Saravanakumar A, Rajkumar M, Thivakaran GA, Serebiah JS. 2008. Abundance and seasonal variations of phytoplankton in the creek waters of western mangrove of Kachchh-Gujarat. J Environ Biol Mar 29 (2): 271-4.
Schils T, Wilson SC, Chepurnov VA. 2008. Diatom bloom associated with gorgonian mortality in the Gulf of Oman, northwestern Indian Ocean. Micronesica 40 (1/2): 305-308.
Silsbe GM, Smith REH, Twiss MR. 2015. Quantum efficiency of phytoplankton photochemistry measured continuously across gradients of nutrients and biomass in Lake Erie (Canada and USA) is strongly regulated by light but not by nutrient deficiency. Can J Fish Aquat Sci 72: 1-45. DOI: 10.1139/cjfas-2014-0365.
Soondur M, Boojhawon R, Lowe R, Kaullysing D, Casareto B, Suzuki Y, Bhagooli R. 2022. Rainfall-driven nutrient loading affects coastal phytoplankton in the southwestern Indian Ocean: A lagoon at Mauritius Island. Afr J Mar Sci 44: 153-169. DOI: 10.2989/1814232X.2022.2066722.
Soondur M, Kaullysing D, Boojhawon R, Lowe R, Casareto B, Yoshimi S, Bhagooli R. 2020. Diel variations in density and diversity of micro-phytoplankton community in and around a barachois-based oyster culture farm. J Sustain Sci Manag 15: 2-17. DOI: 10.46754/jssm.2020.06.002.
Soondur M, Ramah S, Boojhawon R, Kaullysing D, Bhagooli R. 2021a. Spatial distribution of surface chlorophyll a and micro-phytoplankton density and diversity around two islands and at two banks of the Mascarene region. West Indian Ocean J Mar Sci 2/2021: 33-51. DOI: 10.4314/wiojms.si2021.2.3.
Soondur M, Ramah S, Boojhawon R, Kaullysing D, Bhagooli R. 2021b. Variations in abundance, diversity, photo-physiology and estimated productivity of micro-phytoplankton with depth at the Saya de Malha Bank, Mascarene Plateau. West Indian Ocean J Mar Sci 2/2021:53-68. DOI: 10.4314/wiojms.si2021.2.4.
Steffen W, Burbidge A, Hughes L, Kitching R, Lindenmayer D, Musgrave W, Smith MS, Werner P. 2009. Australia's Biodiversity and Climate Change. CSIRO Publishing, Australian.
Stock CA, John JG, Rykaczewski RR, Asch RG, Cheung WW, Dunne JP, Friedland KD, Lam VW, Sarmiento JL, Watson RA. 2017. Reconciling fisheries catch and ocean productivity. Proc Natl Acad Sci 114: E1441-E1449. DOI: 10.1073/pnas.1610238114.
Striebel, M, Schabhüttl S, Hodapp D, Hingsamer P, Hillebrand H. 2016. Phytoplankton responses to temperature increases are constrained by abiotic conditions and community composition. Oecologia 182: 815-827. DOI: 10.1007/s00442-016-3693-3.
Tomas CR. 1996. Identifying Marine Diatoms and Dinoflagellates. Academic Press, San Diego.
Trombetta T, Vidussi F, Mas S, Parin D, Simier M, Mostajir B. 2019. Water temperature drives phytoplankton blooms in coastal waters. PLoS ONE 14: e0214933. DOI: 10.1371/journal.pone.0214933.
Wagner H, Jakob T, Wilhelm C. 2006. Balancing the energy flow from captured light to biomass under fluctuating light conditions. New Phytol 169: 95-108. DOI: 10.1111/j.1469-8137.2005.01550.x.
Wang C, Jia H, Wei J, Yang W, Gao Y, Liu Q, Ge D, Wu N. 2021. Phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system. Ecol Indic 126, 107651. DOI: 10.1016/j.ecolind.2021.107651.
Woelkerling WJ, Kowal RR, Gough SB. 1976. Sedgwick-rafter cell counts: A procedural analysis. Hydrobiologia 48: 95-107. DOI: 10.1007/BF00040161.
Yamamoto A, Abe-Ouchi A, Shigemitsu M, Oka A, Takahashi K, Ohgaito R, Yamanaka Y. 2015. Global deep ocean oxygenation by enhanced ventilation in the Southern Ocean under long-term global warming: Oxygenation under global warming. Glob Biogeochem Cycles 29: 1801-1815. DOI: 10.1002/2015GB005181.
Yamashiro H, Mikame Y, Suzuki H. 2012. Localized outbreak of attached diatoms on the coral Montipora due to low-temperature stress. Sci Rep 2: 552. DOI: 10.1038/srep00552.
Zarauz L, Irigoien X. 2008. Effects of Lugol’s fixation on the size structure of natural nano-microplankton samples, analyzed by means of an automatic counting method. J Plankton Res 30: 1297-1303. DOI: 10.1093/plankt/fbn084.