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... BBC Singers/Poole St John's, Smith Square, Triquetra-Plus Queen Elizabeth Hall, Touching at the Tate, ...
1976 - Gale Group | TDA
Seung Ho Baek, Jang Seu Ki, Toshiya Katano, You Kai, Bum Soo Park, Hyeon Ho Shin, Kyoungsoon Shin, Young O. Kim, Myung‐Soo Han,
... investigated the seasonal abundance of the dinoflagellate Heterocapsa triquetra (Ehrenberg) F. Stein, as well as the relevant ... In the field, the population densities of H. triquetra remained at low levels from late spring to ... November 2007. Interestingly, a dense bloom of H. triquetra appeared below the ice surface on 17 January ... Laboratory experiments showed that growth rates of H. triquetra increased with incremental temperature increases within the range ... C. The highest growth rate reached by H. triquetra was 0.62 d −1 at 20°C ...
Tópico(s): Protist diversity and phylogeny
2011 - Wiley | Phycological Research
Harry Havskum, Per Juel Hansen,
... Net growth of the bloom-forming dinoflagellate Heterocapsa triquetra and pH: why turbulence matters Harry Havskum*, Per ... and the proliferation of the phototrophic dinoflagellate Heterocapsa triquetra was monitored for 10 d. Four turbulent energy ... were employed. The net growth rate of H. triquetra was on average 0.42 d1 at ... 9.0, the net growth rate of H. triquetra decreased in all cases. However, at high cell ... the pH and net growth rate of H. triquetra depended on the turbulence level. At the highest ...
Tópico(s): Marine Toxins and Detection Methods
2006 - Inter-Research Science Center | Aquatic Microbial Ecology
RW Litaker, V. E. Warner, C. Rhyne, CS Duke, B. E. Kenney, J JRamus, PA Tester,
... growth rates of the bloom-forming dinoflagellate Heterocapsa triquetra R. W. Litaker1,2,*, V. E. Warner3, C. ... E-mail: wayne.litaker@noaa.gov ABSTRACT: Heterocapsa triquetra is an important bloom-forming dinoflagellate found in ... 2 wk during the development of an H. triquetra bloom. The objective of this study was to ... patterns and in situ growth rates of H. triquetra. During this study, phytoplankton samples were preserved in ... light levels and nutrient inputs in controlling H. triquetra bloom initiation. During the second study, the estuary ...
Tópico(s): Microbial Community Ecology and Physiology
2002 - Inter-Research | Marine Ecology Progress Series
RW Litaker, PA Tester, CS Duke, B. E. Kenney, James L. Pinckney, J. Ramus,
... niche strategy of the bloom-forming dinoflagellate Heterocapsa triquetra R. W. Litaker1,2,*, P. A. Tester1, C. ... E-mail: wayne.litaker@noaa.gov ABSTRACT: Heterocapsa triquetra is one of the most common bloom-forming ... environmental factors associated with 3 separate wintertime H. triquetra blooms in the shallow tidally mixed Newport River ... included the formation and decline of the H. triquetra bloom. Barometric pressure, precipitation, photosynthetically active radiation, salinity, ... with salinity and hydrodynamic conditions favorable for H. triquetra growth. Here, the H. triquetra bloom reached its ...
Tópico(s): Protist diversity and phylogeny
2002 - Inter-Research | Marine Ecology Progress Series
Meesia triquetra (Richt.) Aongstr. occurs in rich fens having surface waters with high pH and calcium concentrations. The present day distribution of M. triquetra in North America and Greenland is documented from ... lie south of the present-day range. Meesia triquetra (Richt.) Aongstr. can be distinguished from the other ... denticulate leaf margins, and dioicous sexual condition. Meesia triquetra is a rich fen indicator species of high ... fens and floating mats of pond margins. Meesia triquetra can also be found in hollows of alkaline, ...
Tópico(s): Lichen and fungal ecology
1990 - American Bryological and Lichenological Society | The Bryologist
Catherine Legrand, E Granéli, Per Carlsson,
... ame015065 Induced phagotrophy in the photosynthetic dinoflagellate Heterocapsa triquetra Catherine Legrand*, Edna Granéli, Per Carlsson Department of ... hik.se Mixotrophy by the photosynthetic dinoflagellate Heterocapsa triquetra was investigated using fluorescently labelled algae (FLA) (size ... and dark periods in nutrient-depleted medium. H. triquetra showed similar ingestion rates in the light (range: ... flagellate was removed from the suspension by H. triquetra in the light and 22% in the dark. ... addition of FLA, the proportion of small H. triquetra cells ( 2000 μm3) increased from 6 to >20 ...
Tópico(s): Aquatic Ecosystems and Phytoplankton Dynamics
1998 - Inter-Research Science Center | Aquatic Microbial Ecology
Kyung Ha Lee, Hae Jin Jeong, Tae Young Jang, An Suk Lim, Nam Seon Kang, Ju‐Hyoung Kim, Kwang Young Kim, Ki‐Tae Park, Kitack Lee,
... and suboptimal algal prey Heterocapsa rotundata and Heterocapsa triquetra as a function of prey concentration. Among the ... smaydae ingested only thecate dinoflagellates H. rotundata, H. triquetra, Heterocapsa sp., and Scrippsiella trochoidea. Among the peduncle- ... species that are able to feed on H. triquetra. However, G. smaydae did not feed on the ... 3500 cells ml− 1), while that on H. triquetra increased rapidly, but slowly at concentrations of 293 ... of G. smaydae on H. rotundata and H. triquetra were 2.226 d− 1 and 1.053 ...
Tópico(s): Marine Biology and Ecology Research
2014 - Elsevier BV | Journal of Experimental Marine Biology and Ecology
... brown algae Padina pavonica (P. pavonica) and Hormophysa triquetra (H. triquetra) and evaluate their potential antimicrobial activity as bioactive ... hexadecenoic>linoleic acid>αlinolenic>arachidonic> elaidic acid. H. triquetra contained high concentration of saturated fatty acids than ... The crude and fatty acid extracts of H. triquetra and P. pavonica were biologically active on the tested pathogens. H. triquetra exhibited a larger inhibitory zone than P. pavonica. Conclusions: The brown algae P. pavonica and H. triquetra have high efficient amount of fatty acids and ...
Tópico(s): Moringa oleifera research and applications
2014 - Journal of Coastal Life Medicine Editorial Office | Journal of Coastal Life Medicine
Hae Jin Jeong, Yeong Du Yoo, JY Park, JY Song, ST Kim, Seung‐Han Lee, KY Kim, Wonho Yih,
... sanguinea, Alexandrium tamarense, G. catenatum, G. impudicum, Heterocapsa triquetra, L. polyedrum, P. donghaiense, P. micans, P. minimum, ... growth and ingestion rates of P. donghaiense, H. triquetra, P. micans, and L. polyedrum when feeding on ... field data on abundances of P. donghaiense, H. triquetra, P. micans, and L. polyedrum and co-occurring ... to ingest large phytoplankton species such as H. triquetra, S. trochoidea, and A. tamarense. Prorocentrum spp. fed ... sulcus. Specific growth rates of P. donghaiense, H. triquetra, and P. micans on a cryptophyte and L. ...
Tópico(s): Marine Toxins and Detection Methods
2005 - Inter-Research Science Center | Aquatic Microbial Ecology
Claire Labry, Evelyne Erard‐Le Denn, Annie Chapelle, Juliette Fauchot, Agnès Youénou, Marie-Pierre Crassous, Jacqueline Le Grand, B. Lorgeoux,
... Alexandrium minutum, and a non-toxic species, Heterocapsa triquetra, was studied (1) along a gradient of P ... supply frequencies. In conditions of PO4 depletion, H. triquetra stopped growing after two days both in monospecific ... cell division when P depletion becomes severe. Heterocapsa triquetra outcompeted A. minutum when it was submitted to ... the pulse. In contrast, A. minutum outcompeted H. triquetra after more than three days of depletion. This ... depletion. This resulted in a reduction of H. triquetra growth. These two acclimatations were confirmed in a ...
Tópico(s): Algal biology and biofuel production
2008 - Elsevier BV | Journal of Experimental Marine Biology and Ecology
Gaëlle Speeckaert, Alberto Borges, Nathalie Gypens,
... phytoplankton species (Skeletonema costatum, Phaeocystis globosa and Heterocapsa triquetra). DMSP and DMSO cell quotas of the three ... ratio (DMSP/DMSO) for P. globosa and H. triquetra in late exponential-stationary phase. We hypothesized that ... with salinity, mostly in S. costatum and H. triquetra, for which DMSP is supposed to be an osmoregulator. In H. triquetra, DMSO cell quotas stayed constant with increasing salinity. ... at low salinity. In P. globosa and H. triquetra, DMSP/DMSO increase with salinity in response to ...
Tópico(s): Marine and coastal ecosystems
2019 - Elsevier BV | Estuarine Coastal and Shelf Science
Se Hyeon Jang, Hae Jin Jeong, An Suk Lim, Jieun Kwon, Nam Seon Kang,
... of A. glandula on the mixotrophic dinoflagellates Heterocapsa triquetra and Akashiwo sanguinea, its optimal and suboptimal prey, ... family Pfiesteriaceae. Unlike for other pfiesteriacean species, H. triquetra and A. sanguinea support the positive growth of ... the growth rates of A. glandula on H. triquetra and A. sanguinea increased rapidly and then slowed ... The maximum growth rates when feeding on H. triquetra and A. sanguinea were 1.004 and 0. ... maximum ingestion rates of A. glandula on H. triquetra and A. sanguinea were 0.75 and 1. ...
Tópico(s): Protist diversity and phylogeny
2016 - Korean Society of Phycology | ALGAE
Mandi L. Caldwell, David T. Zanatta, Daelyn Woolnough,
... impacts the transformation of the endangered unionid Epioblasma triquetra from larval into juvenile life stages while concurrently ... Huron basins are laboratory‐successful hosts for E. triquetra . Experiments were performed in autumn and spring to ... reconfirmed to be a successful host for E. triquetra , and for the first time, P. maculata was ... seasonal differences in the developmental stages of E. triquetra juveniles. Knowing the most efficient strategy to optimise ... reintroductions, augmentation and overall conservation efforts of E. triquetra successful. These data will help in developing recovery ...
Tópico(s): Environmental Toxicology and Ecotoxicology
2016 - Wiley | Freshwater Biology
... Enterobacter aerogenes were tested with extracts of Turbinaria triquetra and Halimeda opuntia extracted with methanol, ethanol, petroleum ... energy-dispersive X-ray spectroscopy. Results: The T. triquetra extract produced with methanol strongly affected the bacteria tested. When the results for T. triquetra and H. opuntia were compared with those of omacillin, the T. triquetra and H. opuntia extracts in most solvents were ... 63.10% for E. aerogenes when treated T. triquetra. Conclusion: Turbinaria triquetra extracted with methanol strongly affected ...
Tópico(s): Algal biology and biofuel production
2014 - | Journal of Biosciences and Medicines
Therese Jephson, Tony Fagerberg, Per Carlsson,
... behaviour in the dinoflagellates Prorocentrum minimum and Heterocapsa triquetra using vertically stratified laboratory columns with 3 different ... mainly concentrated in the bottom water, while H. triquetra performed DVM under all 3 salinity treatments. H. triquetra migrated through a salinity difference of 6 and ... A salinity gradient of 16, however, stopped H. triquetra cells from moving through the gradient and resulted ... found at the surface. P. minimum and H. triquetra grown in 4 different salinities (10, 15, 20, ...
Tópico(s): Protist diversity and phylogeny
2011 - Inter-Research Science Center | Aquatic Microbial Ecology
A prolonged red tide of Heterocapsa triquetra and phytoplankton succession were investigated in a eutrophic estuary (Golden Horn) for a year. Runoff following the rainfall in winter supplied high ... middle and upper estuary. Red tide of H. triquetra was first observed with an orange-brownish water ... estuary in January. Highest cell density of H. triquetra was 2.7×106 cells l-1 in ... depending on algal biomass. Findings indicate that H. triquetra might be adapted to moderate salinity and low ...
Tópico(s): Aquatic Ecosystems and Phytoplankton Dynamics
2015 - Hellenic Centre for Marine Research | Mediterranean Marine Science
E. Walter Helbling, Anita G. J. Buma, Willem H. van de Poll, M. Verónica Fernández Zenoff, Virginia E. Villafañe,
... regimes) on the marine dinoflagellates Gymnodinium chlorophorum, Heterocapsa triquetra and Prorocentrum micans was investigated during the austral ... UVR-induced photoinhibition that was higher in H. triquetra as compared to the other two species. Increasing ... of carbon fixation in G. chlorophorum and H. triquetra. No significant UVR effect was observed in P. ... was due to UV-B while in H. triquetra it was due to UV-A. Part of ... abundant in P. micans, and low in H. triquetra and in G. chlorophorum. However, other variables such ...
Tópico(s): Protist diversity and phylogeny
2008 - Elsevier BV | Journal of Experimental Marine Biology and Ecology
Kaisa Kononen, Maija Huttunen, Seija Hällfors, Patrick Gentien, Michel Lunven, Timo Huttula, Jaan Laanemets, Madis Lilover, J. Pavelson, Adolf Stips,
... to a red tide of the dinoflagellate Heterocapsa triquetra instead of the cyanobacterial bloom that frequently occurs ... estimated amount of nitrogen required for an H. triquetra bloom biomass with external loading affirmed that the ... extremely deep nitracline. The DCM formed by H. triquetra developed at the top of the nitracline at ... a result of changing migratory behavior of H. triquetra after an upwelling event that fertilized the upper ...
Tópico(s): Isotope Analysis in Ecology
2003 - Wiley | Limnology and Oceanography
MC Archambault, Jon Grant, V. Monica Bricelj,
... 3354/meps253097 Removal efficiency of the dinoflagellate Heterocapsa triquetra by phosphatic clay, and implications for the mitigation ... equivalent spherical diameter, ESD) to a simulated Heterocapsa triquetra (14.7 µm mean ESD) bloom. Flow speed ... indicated that 100% of the thecate dinoflagellate H. triquetra was removed in 48 h by IMC-P ... Particle size distribution · Small volume particle microsampler · Heterocapsa triquetra · Mitigation · Aggregation Full text in pdf format PreviousNextExport ...
Tópico(s): Wastewater Treatment and Nitrogen Removal
2003 - Inter-Research | Marine Ecology Progress Series
L.M. Schmidt, Per Juel Hansen,
... of C. polylepis to immobilize the dinoflagellate Heterocapsa triquetra was studied in batch cultures. Loss of motility of H. triquetra cells could be detected at cell concentrations of ... cultures of C. polylepis did not immobilize H. triquetra cells. The ability of C. polylepis to immobilize H. triquetra cells was dependent on the pH of the growth medium. More non-motile H. triquetra cells were obtained in alkaline growth medium than ...
Tópico(s): Protist diversity and phylogeny
2001 - Inter-Research | Marine Ecology Progress Series
Jordi Pérez-Cano, Telm Bover‐Arnal, Carles Martı́n-Closas,
... clastic input, mainly composed of Atopochara trivolvis var. triquetra , Clavator harrisii , Ascidiella stellata , and A. triquetra . The thalli known as Munieria grambastii , corresponding to ... lazarii , Globator maillardii var. trochiliscoides , A. trivolvis var. triquetra , C. harrisii , Hemiclavator neimongolensis var. neimongolensis , and locally ... mainly constituted by E. lazarii , A. trivolvis var. triquetra , and C. harrisii var. harrisii and var. reyi . ...
Tópico(s): Geology and Paleoclimatology Research
2022 - Springer Science+Business Media | Facies
Caitlin E. Beaver, Daelyn Woolnough, David T. Zanatta,
The endangered freshwater mussel (Bivalvia:Unionidae) Epioblasma triquetra, or Snuffbox, has the largest distribution of any extant species in its highly threatened genus. The Laurentian Great Lakes populations of E. triquetra are among the most important remaining strongholds. Genetic ... the 12 locations (n = 277 individuals) where E. triquetra are known to persist in the Great Lakes ... and the Huron–St Clair–Erie corridor. Epioblasma triquetra in rivers that drain into the Huron–St ... with multiple post-glacial colonization events by E. triquetra into the Great Lakes after the retreat of ...
Tópico(s): Soil and Water Nutrient Dynamics
2019 - University of Chicago Press | Freshwater Science
Urban Tillmann, Mona Hoppenrath, Marc Gottschling, Wolf‐Henning Kusber, Malte Elbrächter,
... marine dinophytes is a species known as Heterocapsa triquetra. When Stein introduced the taxon Heterocapsa, he formally based the type species H. triquetra on the basionym Glenodinium triquetrum. The latter was ... nomenclatural situation, the thecal plate composition of H. triquetra sensu Stein (1883) was controversial in the past. ...
Tópico(s): Marine and coastal ecosystems
2017 - Wiley | Journal of Phycology
Varsha Sharma, Kishan Gopal Ramawat,
... halophytes of the Thar Desert; Salsola baryosma, Trianthema triquetra and Zygophyllum simplex were evaluated. Callus tissues were ... in soluble sugars. Among the three species, T. triquetra callus showed maximum CAT activity with 50 and ... concentrations in all the three species. However, T. triquetra callus showed maximum total phenolic content (TPC) 15 ...
Tópico(s): Phytochemicals and Antioxidant Activities
2013 - Springer Nature | Biologia
David T. Zanatta, Chris C. Wilson,
... by their host fish. The snuffbox mussel Epioblasma triquetra (Unionoida) and other congeners use a novel trapping ... glochidia). Common logperch (Percina caprodes) trapped by E. triquetra survive the trapping behaviour, whereas other darter species ( ... do not, thus, making the P. caprodes–E. triquetra relationship a good candidate system for a coevolutionary ... hypothesized that the geographic genetic structure of E. triquetra should closely match that of its host, albeit ...
Tópico(s): Myxozoan Parasites in Aquatic Species
2011 - Oxford University Press | Biological Journal of the Linnean Society
KA Seong, Hae Jin Jeong, Sung-Ho Kim, G T Kim, Kang Jh,
... of the dinoflagellates Cochlodinium polykrikoides, Heterocapsa rotundata, H. triquetra, and Prorocentrum minimum as well as the raphidophytes ... red-tide algae C. polykrikoides, H. rotundata, H. triquetra, H. akashiwo, P. minimum, and P. triestinum on ... ingestion rates of C. polykrikoides, H. rotundata, H. triquetra, P. minimum, C. ovata, and H. akashiwo on ... clearance rates of C. polykrikoides, H. rotundata, H. triquetra, P. minimum, C. ovata, and H. akashiwo on ...
Tópico(s): Marine and coastal plant biology
2006 - Inter-Research | Marine Ecology Progress Series
... was tested on 3 species (Ceratium lineatum, Heterocapsa triquetra and Prorocentrum minimum) in laboratory experiments. The growth ... similar reduction in the growth rate in H. triquetra and P. minimum was observed at pH 8. ... ceased at about pH 9.45 in H. triquetra and 9.6 in P. minimum. Compilation of ... experiments using a mixture of C. lineatum, H. triquetra and P. minimum always resulted in the species ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2002 - Inter-Research Science Center | Aquatic Microbial Ecology
C. Marjorie Aelion, Sallie W. Chisholm,
... tintinnid, Favella sp. cultured with the dinoflagellate Heterocapsa triquetra. In vivo fluorescence was used to monitor the change in density of the H. triquetra population over 4- to 5-day periods in ... rate such that below 11.4°C, H. triquetra grew more quickly than Favella sp. and above ... was reversed. Ingestion rates of Favella on H. triquetra were found to be temperature dependent in a ...
Tópico(s): Ocean Acidification Effects and Responses
1985 - Oxford University Press | Journal of Plankton Research
... Kubitzki und Rolf Borchert: Morphologische Studien an Isoëtes triquetra A. Braun und Bemerkungen über das Verhältnis der ... onFacebookTwitterLinkedInRedditWechat Zusammenfassung Der Bau der Blätter von Isoëtes triquetra, einer Art der südamerikanischen Hochanden, stimmt im wesentlichen ... keine näheren verwandtschaftlichen Beziehungen bestehen dürften. Für Isoëtes triquetra wird gezeigt, daß die Blattentwicklung ein Stadium durchläuft, ... Arten. Die definitive Gestalt des Blattes von Isoëtes triquetra (und auch von Stylites) wird erst durch eine ...
Tópico(s): Flowering Plant Growth and Cultivation
1964 - Wiley | Berichte der Deutschen Botanischen Gesellschaft