Phycologia最新文献

{"title":"The reproductive system of the cryptogenic alga Chondria tumulosa (Florideophyceae) at Manawai, Papahānaumokuākea Marine National Monument","authors":"Taylor M. Williams, Stacy A. Krueger-Hadfield, Kristina M. Hill-Spanik, Randall K. Kosaki, Solenn Stoeckel, Heather L. Spalding","doi":"10.1080/00318884.2023.2284074","DOIUrl":"https://doi.org/10.1080/00318884.2023.2284074","url":null,"abstract":"Determining the relative importance of sexual and asexual reproduction is critical for determining how genetic diversity is partitioned within and among populations. Macroalgae exhibit reproductive...","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138716188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phylogenetic analysis of the Cladophora coelothrix complex, including the description of the new genus Leliaertia (Cladophorales, Ulvophyceae)","authors":"Jhullyrson Osman Ferreira de Brito, Aigara Miranda Alves, Luane do Carmo Portela, Cassio van den Berg, Sonia Maria Barreto Pereira, Lísia Monica Gestinari, Valéria Cassano, Carlos Wallace do Nascimento Moura, Watson Arantes Gama","doi":"10.1080/00318884.2023.2282921","DOIUrl":"https://doi.org/10.1080/00318884.2023.2282921","url":null,"abstract":"Molecular phylogenetic studies have revealed the polyphyletic nature of Cladophora as traditionally circumscribed, which is separated into four main clades: Cladophoraceae, Siphonocladus, Pithophor...","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138575308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disturbance of respiration-improved lipid biosynthesis in Auxenochlorella pyrenoidosa (Chlorellaceae, Chlorophyta) under nitrogen limitation","authors":"Liufu Wang, Tian Yang, Liqiu Shi, Yaqi Jin, Wenzhi Wei","doi":"10.1080/00318884.2023.2283826","DOIUrl":"https://doi.org/10.1080/00318884.2023.2283826","url":null,"abstract":"Understanding the related mechanisms between aerobic respiration and lipid biosynthesis may promote microalgal-biofuel industries through metabolic engineering. However, little is known about how a...","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138680113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Calcification in the coralline red algae: a synthesis","authors":"Sophie J. McCoy, Curt M. Pueschel, Christopher E. Cornwall, Steeve Comeau, Sven A. Kranz, Nathan B. Spindel, Michael A. Borowitzka","doi":"10.1080/00318884.2023.2285673","DOIUrl":"https://doi.org/10.1080/00318884.2023.2285673","url":null,"abstract":"A descriptive model of calcification in the coralline red algae is integral to understanding their contributions to marine geochemistry, the responses of seascapes to global change, and their own e...","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138559788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Species diversity and ecological roles of marine calcified macroalgae, with an emphasis on coralline algae in the western Pacific Ocean","authors":"Showe-Mei Lin, Wendy Nelson, John M. Huisman","doi":"10.1080/00318884.2023.2287363","DOIUrl":"https://doi.org/10.1080/00318884.2023.2287363","url":null,"abstract":"This special issue was initially conceived during a council meeting of the International Phycological Society in 2021, where the promotion of manuscript submissions focusing on regional research ac...","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138716183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of temperature on isomorphic haploid-diploid phases of Gracilariopsis tenuifrons (Gracilariales, Rhodophyta)","authors":"Andre Vinicius Fonseca Faria, Estela M. Plastino","doi":"10.1080/00318884.2023.2278381","DOIUrl":"https://doi.org/10.1080/00318884.2023.2278381","url":null,"abstract":"Sea surface temperature is increasing, and we still do not have a good understanding of the effects of these temperature rises on haploid-diploid phases of many isomorphic red algae. In this study,...","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138543607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interactive effects of ocean acidification and water flow on growth and recruitment of early successional coralline algal communities","authors":"Anna Kluibenschedl, Christopher E. Cornwall, Wendy A. Nelson, Miles Lamare, Daniel W. Pritchard, Christopher D. Hepburn","doi":"10.1080/00318884.2023.2272776","DOIUrl":"https://doi.org/10.1080/00318884.2023.2272776","url":null,"abstract":"ABSTRACTCoralline algae play crucial roles in near-shore ecosystems but are susceptible to ocean acidification (OA). It has been hypothesized that low water velocity, allowing localized photosynthesis-driven pH-increases in the coralline surface boundary layer, could buffer against the negative impacts of OA. To test how water motion affected the sensitivity of coralline algae to OA, coralline communities (from 2 m and 10 m depth) were grown for 220 days at two pH levels (present-day: pH 8.03, OA: pH 7.65) under differing inflow rates (400, 200 and 100 ml min–1) providing water velocities of 2.7, 5.9 and 7.8 cm s–1. Communities from both depths were grown together, photographed to assess growth, and the resulting recruitment was evaluated at the experiment’s conclusion. Low seawater pH reduced growth by c. 11% (highest flow), further decreased by >23% under the lowest flow. This reduction resulted in differential outcomes for the two depths, with skeletal net-dissolution under the combination of low flow and pH 7.65 for 10 m communities. Furthermore, there was a synergistic interaction between the effects of flow and pH, whereby the negative effect of OA strengthened under low flow, with recruitment halved at pH 7.65. This demonstrates that OA impacts can be modulated by the flow environment. Surprisingly, increased flow rates/water velocities reduced negative impacts of low pH, thus further challenging the notion that slow flow habitats offer protection from OA. The observed interactions between water flow and OA on early successional communities and their recruits may hold implications for the future of rocky reef systems dominated by these communities.KEYWORDS: Flow rateFuture oceanNew ZealandTemperate coralline communitiesWater motion ACKNOWLEDGEMENTSWe thank Brenton A. Twist for his help with culture maintenance and Kim Currie for her continuous support and expertise in seawater carbonate chemistry. Special thanks to the management committee of the East Otago Taiāpure for facilitating the field component of this research.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Supplementary InformationSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2272776Additional informationFundingThis work was funded by the Coastal Acidification, Rate, Impacts and Management (CARIM) research program (M.L), funded by the New Zealand Ministry of Business, Innovation and Employment, the CARIM Postgraduate Scholarship (to A.K.) and the Ministry for Primary Industries (MPI) New Zealand under the Biodiversity Research Programme (ZBD2014-07; W.A.N.). C.E.C. was supported by a Rutherford Discovery Fellowship from The Royal Society of New Zealand Te Apārangi (VUW-1701).","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135432389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tolerance of three temperate macroalgal taxa to marine heatwaves of differing durations and intensities is not modulated by irradiance","authors":"Erik C. Krieger, Yaelle Sarid-Segal, Imke M. Böök, Aleluia Taise, Denisa Berbece, Christopher E. Cornwall","doi":"10.1080/00318884.2023.2267411","DOIUrl":"https://doi.org/10.1080/00318884.2023.2267411","url":null,"abstract":"ABSTRACTMarine heatwaves (MHWs) are recognized as principal drivers of ocean change. However, interactions with other important local and global drivers such as ocean acidification, eutrophication and sedimentation, and the physiological mechanisms via which MHWs act on species are poorly understood. Additionally, past studies have often focused on ecologically dominant taxa such as kelps, fucoids and coral, potentially leading to a lack of understanding of direct impacts on associated species. To this end, we examined the individual and interactive impacts of MHW duration (14 and 28 days) and intensity (20.5°C and 23°C) as well as irradiance (2.3 and 4.4 mol m–2 d–1) on standardized growth of Caulerpa brownii, Corallina berteroi and Phymatolithopsis complex, three temperate macroalgal taxa that are important spaceholders in their native ecosystem in Te Whanganui a Tara Wellington, Aotearoa New Zealand. All three taxa exhibited no declines in growth in response to the exposure to longer and more intense MHWs. We posit that the simulated MHW scenarios were tolerated due to large thermal safety margins which can be expected from the range centre/leading edge position of the sampled populations, even though some of these scenarios far exceeded the intensities encountered in this region previously. Interactions between intensity, duration and irradiance were limited to an antagonistic irradiance-duration interaction in the non-calcareous green macroalga Ca. brownii only. Together, the displayed tolerance of the study species to the simulated scenarios implies limited impacts of strong MHWs four weeks or shorter in duration on ecosystem functioning in New Zealand kelp forest systems if brown algal canopies remain intact.KEYWORDS: CaulerpaClimate changeCoralline algaeKelp forestMarine heatwave ACKNOWLEDGMENTSWe thank R. D’Archino for guiding the molecular identification of coralline algae. ECK and CEC were supported by a Rutherford Discovery Fellowship from The Royal Society of New Zealand Te Apārangi (no. RDF-VUW1701), Coastal People Southern Skies Centre of Research Excellence, and Victoria University of Wellington University Research Grant awarded to CEC.AUTHOR CONTRIBUTIONSECK, YSS, IMB, AT and CEC designed the research. ECK wrote the paper. YSS ran the experiment with assistance from all other authors. YSS and ECK conducted molecular species identification. ECK performed the statistical analysis. All authors edited the manuscript, or provided intellectual input, and agreed to its submission.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Supplementary InformationSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2267411Additional informationFundingThis work was supported by the Victoria University of Wellington University Research Grant; Coastal People Southern Skies Centre of Research Excellence; Royal Society of New Zealand Te Apārangi [RDF-VUW1701].","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135993796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resolving the identity of <i>Jania crassa</i> (Corallinales, Rhodophyta)","authors":"Wendy A. Nelson, Line Le Gall, Viviana Peña, Brenton A. Twist","doi":"10.1080/00318884.2023.2253694","DOIUrl":"https://doi.org/10.1080/00318884.2023.2253694","url":null,"abstract":"ABSTRACTDNA sequences obtained from the isolectotype of Jania crassa, collected from Dusky Sound, Fiordland, New Zealand, have revealed the identity of this poorly understood taxon, and enabled comparison with modern material. The name Jania crassa has been previously widely applied in New Zealand and Australia. Data presented here show that Jania crassa differs from other species within the New Zealand region: of the eight species of Jania currently recognized, three are dichotomously branched, and two of these are known from southern New Zealand. Jania crassa can be distinguished from the smaller and epiphytic species of Jania in southern New Zealand, J. sphaeroramosa, on the basis of size and growth habit. Jania crassa appears to be an infrequently collected, possibly endemic species of southern New Zealand, with only one recent collection confirmed. Further collections and sequence data are needed to better understand the distribution of this species, particularly in neighbouring regions.KEYWORDS: Coralline algaeCorallinophycidaeFiordlandNew Zealandtype specimen ACKNOWLEDGEMENTSWe thank the many people who have assisted with field work and contributed to collections of coralline algae from New Zealand, particularly Kate Neill, Tracy Farr, Roberta D’Archino, and Chris Hepburn, and the team at the University of Otago. We are very grateful to the skipper and crew of the RV Polaris for field work in Fiordland and Rakiura, and for field assistance from Ngāi Tahu (Ngāi Tahu Te Tiaki Mahinga Kai). We very much appreciate the assistance of herbarium staff at Te Papa Tongarewa Museum of New Zealand; and Erika Mackay and Kate Neill (NIWA) for preparation of plates.DISCLOSURE STATEMENTNo potential conflict of interest was reported by the authors.Supplementary InformationSupplemental data for this article can be accessed online at https://doi.org/10.1080/00318884.2023.2253694Additional informationFundingThis work was supported by NIWA SSIF funding.","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135591410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studies on the complex Warnowiaceae (Dinophyceae) I. Lohmann’s Pouchetia parva refound and renamed Nematodinium parvum comb. nov. (= Warnowia parva)","authors":"María García-Portela, Ø. Moestrup, N. Daugbjerg, Andreas Altenburger, N. Lundholm","doi":"10.1080/00318884.2023.2244810","DOIUrl":"https://doi.org/10.1080/00318884.2023.2244810","url":null,"abstract":"The dinoflagellate family Warnowiaceae has often been considered to include some of the most complex cells among the protists. The number of described species is around 40, but both the species and generic concepts are in need of revision. Warnowiaceans are often fragile and readily change morphology under the light microscope, and they are usually regarded to be rare. They are particularly famous for the eye-like structures, termed ocelloids. Studies on warnowiaceans are hampered by lack of cultures, and our studies are therefore based on cells obtained directly from field samples. We provide a description of Nematodinium parvum comb. nov . (syn. Pouchetia parva, Warnowia parva ), based on light, scanning and transmission electron microscopy, combined with phylogenetic analyses of ribosomal genes. It was described in 1908 by Lohmann from Kieler Bay, but is often common in Danish waters, allowing observations on distribution and behaviour. Crucial conditions for finding high cell abundances were periods of warm temperatures and a calm sea. Cells were yellowish, photosynthetic, and contained a net-like chloroplast, in addition to an ocelloid, trichocysts and harpoon-like nematocysts. They divided asexually but planozygotes were also seen. Following the demonstration of nematocysts, the species, which has been known as Warnowia parva since 1928, is transferred to Nematodinium . The finding of a peduncle indicates mixotrophy but all feeding experiments failed to identify a suitable prey. The phylogenetic analyses based on single-cell PCR and sequence determinations of small and large subunit rDNA confirmed that the systematics of Nematodinium and Warnowia is in a state of flux.","PeriodicalId":20140,"journal":{"name":"Phycologia","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41466064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}