Journal of Phycology

Cover image for Vol. 52 Issue 1

Edited By: Debashish Bhattacharya, Michael Graham, Arthur Grossman, Jonathan Zehr

Impact Factor: 2.844

ISI Journal Citation Reports © Ranking: 2014: 11/103 (Marine & Freshwater Biology); 43/204 (Plant Sciences)

Online ISSN: 1529-8817

Featured

  • Recovery and identification of Pseudo-nitzschia (Bacillariophyceae) frustules from natural samples acquired using the environmental sample processor

    Recovery and identification of Pseudo‐nitzschia (Bacillariophyceae) frustules from natural samples acquired using the environmental sample processor

    Integrity of frustules after long-term dry storage (>3 months) of a methanol extracted DA filter from an ESP deployment in San Pedro, CA.

  • Gymnoxanthella radiolariae gen. et sp. nov. (Dinophyceae), a dinoflagellate symbiont from solitary polycystine radiolarians

    Gymnoxanthella radiolariae gen. et sp. nov. (Dinophyceae), a dinoflagellate symbiont from solitary polycystine radiolarians

    Light micrographs of polycystine radiolarians. (A) Acanthodesmia vinculata; (B) Pterocanium praetextum; (C) Euchitonia elegans with yellow-brown algal symbionts. Arrows indicate the symbiotic algae, scale bars = 50 μm.

  • Evidence of an evolutionary-developmental trade-off between drag avoidance and tolerance strategies in wave-swept intertidal kelps (Laminariales, Phaeophyceae)

    Evidence of an evolutionary‐developmental trade‐off between drag avoidance and tolerance strategies in wave‐swept intertidal kelps (Laminariales, Phaeophyceae)

    Photographs of the species used in this study: (A) Alaria marginata, (B) Costaria costata, (C) Egregia menziesii, (D) Laminaria setchellii, (E) Lessoniopsis littoralis, (F) Macrocystis pyrifera, (G) Saccharina groenlandica, (H) Saccharina sessilis. Photos A–G by R.B. Munger, and photo H by S. Starko.

  • New Ulvaceae (Ulvophyceae, Chlorophyta) from mesophotic ecosystems across the Hawaiian Archipelago

    New Ulvaceae (Ulvophyceae, Chlorophyta) from mesophotic ecosystems across the Hawaiian Archipelago

    Specimen collections in situ with the Pisces IV and Pisces V submersibles. White scale bar is 10 cm. Site locations in Fig. . The mean irradiance (PAR) levels from 80 to 125 m depths are 36 to 5 μmol photons · m−2 · s−1, respectively (Spalding ). (a) Ulva ohiohilulu at 85 m depth (Site 7), (b) U. ohiohilulu at 93 m (Site 9), (c) Umbraulva kuaweuweu at 80 m (Site 4), (d) Umbraulva kaloakulau at 125 m (Site 10).

  • Phosphorus physiological ecology and molecular mechanisms in marine phytoplankton

    Phosphorus physiological ecology and molecular mechanisms in marine phytoplankton

    Global ocean map indicating where low-Pi stress or P-growth limitation has been demonstrated from high alkaline phosphatase activity (red stars), P-stress gene expression (green circles), nutrient (P, N, and N + P) addition incubations (bioassays, purple squares), and elevated N:P ratios (>16; yellow triangles).

  • The importance of effective sampling for exploring the population dynamics of haploid–diploid seaweeds

    The importance of effective sampling for exploring the population dynamics of haploid–diploid seaweeds

    In order to design and implement effective sampling strategies for the study of haploid–diploid population genetics, we have implemented simulations in which we explored the optimal sampling strategies with which to characterize: (A) haploid–diploid ratios, (B) genetic differentiation, and (C) paternity in algal populations. (A) Haploid–Diploid Ratios: The heat map depicts the power (from 0 to 1, with 1 being maximum) with which to dis-tinguish an observed proportion of haploids (x-axis) from √2:1 for different sample sizes (y-axis). (B) Genetic Differentiation: Power (y-axis) to successfully detect significant allele frequency differences in populations separated by different degrees of simulated FST and for different sample sizes. This is based on a diploid subsample. Very low genetic differentiation necessita-tes very large samples sizes where power estimates are often less than 0.7. (C) Paternity Analyses: The heat map depicts the power (from 0 to 1, with 1 being maximum) to distinguish the observed number of fathers per cystocarp, depending on the number of cystocarps (Nc) and the number of females (Nf).

  • Recovery and identification of Pseudo‐nitzschia (Bacillariophyceae) frustules from natural samples acquired using the environmental sample processor
  • Gymnoxanthella radiolariae gen. et sp. nov. (Dinophyceae), a dinoflagellate symbiont from solitary polycystine radiolarians
  • Evidence of an evolutionary‐developmental trade‐off between drag avoidance and tolerance strategies in wave‐swept intertidal kelps (Laminariales, Phaeophyceae)
  • New Ulvaceae (Ulvophyceae, Chlorophyta) from mesophotic ecosystems across the Hawaiian Archipelago
  • Phosphorus physiological ecology and molecular mechanisms in marine phytoplankton
  • The importance of effective sampling for exploring the population dynamics of haploid–diploid seaweeds

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