GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
Publikationsart
Schlagwörter
Verlag/Herausgeber
Sprache
Erscheinungszeitraum
  • 1
    Buch
    Buch
    Effects of ultraviolet radiaton on early life stages of cold temperate and arctic macrogalgae : implications for recruitment and vertical depth distribution = Effekte von UV-Strahlung auf frühe Lebensstadien kaltgemäßigter und arktischer Makroalgen (2006)
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Details Verfügbarkeit
    Schlagwort(e): Gigartinales Effect of ultraviolet radiation on ; Laminariales Effect of ultraviolet radiation on ; Hochschulschrift ; Arktis ; Ultraviolett ; Seetang ; Generationswechsel ; Seetang ; Ultraviolett ; Generationswechsel ; Arktis
    Materialart: Buch
    Seiten: XV, 158 S. , graph. Darst.
    Serie: Berichte zur Polar- und Meeresforschung 526
    URL: http://www.loc.gov/catdir/toc/fy0703/2006499119.html
    RVK:
    RY 20075
    Sprache: Englisch
    Anmerkung: Zusammenfassung in dt. Sprache , Zugl.: Bremen, Univ., Diss., 2005
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    GEOMAR KATALOG
    Link zum Bibliothekskatalog
    get availability status
  • 2
    facet.materialart.
    Unbekannt
    Climate Change Impacts on Seagrass Meadows and Macroalgal Forests: An Integrative Perspective on Acclimation and Adaptation Potential (2018)
    Frontiers
    In:  Frontiers in Marine Science, 5 . Art.Nr. 190.
    Details
    Publikationsdatum: 2021-02-08
    Beschreibung: Marine macrophytes are the foundation of algal forests and seagrass meadows-some of the most productive and diverse coastal marine ecosystems on the planet. These ecosystems provide nursery grounds and food for fish and invertebrates, coastline protection from erosion, carbon sequestration, and nutrient fixation. For marine macrophytes, temperature is generally the most important range limiting factor, and ocean warming is considered the most severe threat among global climate change factors. Ocean warming induced losses of dominant macrophytes along their equatorial range edges, as well as range extensions into polar regions, are predicted and already documented. While adaptive evolution based on genetic change is considered too slow to keep pace with the increasing rate of anthropogenic environmental changes, rapid adaptation may come about through a set of non-genetic mechanisms involving the functional composition of the associated microbiome, as well as epigenetic modification of the genome and its regulatory effect on gene expression and the activity of transposable elements. While research in terrestrial plants demonstrates that the integration of non-genetic mechanisms provide a more holistic picture of a species' evolutionary potential, research in marine systems is lagging behind. Here, we aim to review the potential of marine macrophytes to acclimatize and adapt to major climate change effects via intraspecific variation at the genetic, epigenetic, and microbiome levels. All three levels create phenotypic variation that may either enhance fitness within individuals (plasticity) or be subject to selection and ultimately, adaptation. We review three of the most important phenotypic variations in a climate change context, including physiological variation, variation in propagation success, and in herbivore resistance. Integrating different levels of plasticity, and adaptability into ecological models will allow to obtain a more holistic understanding of trait variation and a realistic assessment of the future performance and distribution of marine macrophytes. Such multi-disciplinary approach that integrates various levels of intraspecific variation, and their effect on phenotypic and physiological variation, is of crucial importance for the effective management and conservation of seagrasses and macroalgae under climate change.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.3389/fmars.2018.00190
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 3
    facet.materialart.
    Unbekannt
    Long-Term Conditioning to Elevated pCO2 and Warming Influences the Fatty and Amino Acid Composition of the Diatom Cylindrotheca fusiformis (2015)
    Public Library of Science
    In:  PLoS ONE, 10 (5). e0123945.
    Details
    Publikationsdatum: 2017-04-13
    Beschreibung: The unabated rise in anthropogenic CO2 emissions is predicted to strongly influence the ocean's environment, increasing the mean sea-surface temperature by 4°C and causing a pH decline of 0.3 units by the year 2100. These changes are likely to affect the nutritional value of marine food sources since temperature and CO2 can influence the fatty (FA) and amino acid (AA) composition of marine primary producers. Here, essential amino (EA) and polyunsaturated fatty (PUFA) acids are of particular importance due to their nutritional value to higher trophic levels. In order to determine the interactive effects of CO2 and temperature on the nutritional quality of a primary producer, we analyzed the relative PUFA and EA composition of the diatom Cylindrotheca fusiformis cultured under a factorial matrix of 2 temperatures (14 and 19°C) and 3 partial pressures of CO2 (180, 380, 750 μatm) for 〉250 generations. Our results show a decay of ∼3% and ∼6% in PUFA and EA content in algae kept at a pCO2 of 750 μatm (high) compared to the 380 μatm (intermediate) CO2 treatments at 14°C. Cultures kept at 19°C displayed a ∼3% lower PUFA content under high compared to intermediate pCO2, while EA did not show differences between treatments. Algae grown at a pCO2 of 180 μatm (low) had a lower PUFA and AA content in relation to those at intermediate and high CO2 levels at 14°C, but there were no differences in EA at 19°C for any CO2 treatment. This study is the first to report adverse effects of warming and acidification on the EA of a primary producer, and corroborates previous observations of negative effects of these stressors on PUFA. Considering that only ∼20% of essential biomolecules such as PUFA (and possibly EA) are incorporated into new biomass at the next trophic level, thepotential impacts of adverse effects of ocean warming and acidification at the base of the food web may be amplified towards higher trophic levels, which rely on them as source of essential biomolecules.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1371/journal.pone.0123945
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 4
    facet.materialart.
    Unbekannt
    UVB-induced DNA and photosystem II damage in two intertidal green macroalgae: Distinct survival strategies in UV-screening and non-screening Chlorophyta (2014)
    Elsevier
    In:  Journal of Photochemistry and Photobiology B: Biology, 132 . pp. 85-93.
    Details
    Publikationsdatum: 2017-10-05
    Beschreibung: Ultraviolet-B-induced (UVB, 280-315 nm) accumulation of cyclobutane pyrimidine dimers (CPDs) and deactivation of photosystem II (PS II) was quantified in two intertidal green macroalgae, Ulva clathrata and Rhizoclonium riparium. The species were chosen due to their shared habitats but contrasting UVB screening potentials. In the non-screening U. clathrata CPDs accumulated and PS II activity declined as a linear function of applied UVB irradiance. In R. riparium UVB-induced damage was significantly lower than in U. clathrata, demonstrating an efficient UVB protection of DNA and PS II by screening. Based on the UVB irradiance reaching the chloroplasts, both species showed an identical intrinsic sensitivity of PS II towards UVB, but DNA lesions accumulated slower in U. clathrata. While repair of CPDs was similar in both species, U. clathrata was capable of restoring its PS II function decidedly faster than R. riparium. In R. riparium efficient screening may represent an adaptation to its high light habitat, whereas in U. clathrata high repair rates of PS II appear to be important to survive natural UVB exposure. The role of shading of the nucleus by the large chloroplasts in U. clathrata is discussed.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.jphotobiol.2014.02.006
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 5
    facet.materialart.
    Unbekannt
    Seaweed responses to ocean acidification (2012)
    Springer
    In:  In: Seaweed biology : novel insights into ecophysiology, ecology and utilization. Ecological Studies, 219 . Springer, Berlin, Germany, pp. 407-431. ISBN 3-642-28450-7
    Details
    Publikationsdatum: 2015-10-30
    Materialart: Book chapter , NonPeerReviewed
    Format: text
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Buchkapitel
  • 6
    facet.materialart.
    Unbekannt
    The genus Laminaria sensu lato: recent insights and developments (2008)
    Taylor & Francis
    In:  European Journal of Phycology, 43 (1). pp. 1-86.
    Details
    Publikationsdatum: 2019-09-23
    Beschreibung: This review about the genus Laminaria sensu lato summarizes the extensive literature that has been published since the overview of the genus given by Kain in 1979. The recent proposal to divide the genus into the two genera Laminaria and Saccharina is acknowledged, but the published data are discussed under a 'sensu lato' concept, introduced here. This includes all species which have been considered to be 'Laminaria' before the division of the genus. In detail, after an introduction the review covers recent insights into phylogeny and taxonomy, and discusses morphotypes, ecotypes, population genetics and demography. It describes growth and photosynthetic performance of sporophytes with special paragraphs on the regulation of sporogenesis, regulation by endogenous rhythms, nutrient metabolism, storage products, and salinity tolerance. The biology of microstages is discussed separately. The ecology of these kelps is described with a focus on stress defence against abiotic and biotic factors and the role of Laminaria as habitat, its trophic interactions and its competition is discussed. Finally, recent developments in aquaculture are summarized. In conclusion to each section, as a perspective and guide to future research, we draw attention to the remaining gaps in the knowledge about the genus and kelps in general.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1080/09670260701711376
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    OceanRep: Artikel in einer Fachzeitschrift - begutachtet
  • 7
    facet.materialart.
    Unbekannt
    Local adaptation of microscopic stages of North Atlantic Laminaria digitata to high and low temperatures along latitudes: survival, reproduction and growth (2022)
    PANGAEA
    Details
    Publikationsdatum: 2023-06-13
    Beschreibung: To assess the thermal adaptation of microscopic stages of the kelp Laminaria digitata along latitudes, we conducted laboratory experiments on samples from six locations in the NE Atlantic (Spitsbergen (SPT), Tromsø (TRM), Bodø (BOD; all Norway), Helgoland (HLG; Germany), Roscoff (ROS) and Quiberon (QUI; both France)), spanning the species' entire distribution range. In experiment 1, we exposed gametophytes to (sub-) lethal high priming temperatures (20-25°C) for two weeks, followed by two weeks of recovery at 15°C, to observe gametophyte survival and sporophyte formation. In experiment 2, samples were subjected to (sub-) optimal low temperatures (0-15°C) for 21 days, to assess gametophyte survival, sporophyte formation and growth. During the experiments, samples were kept in 15 µmol photons/m²/s white light under a 16:8h light:dark cycle. Prior to the experiments, cultures were stored at 15°C in iron-free ½ Provasoli enriched seawater in 3-4 µmol photons/m²/s red light.
    Schlagwort(e): common garden experiment; gametogenesis; growth; kelp; Laboratory experiment; latitude; Local adaptation; North Atlantic; Reproduction; Survival; Temperature; upper survival temperature
    Materialart: Dataset
    Format: application/zip, 3 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unbekannt
    Laminaria digitata gametophyte survival and sporophyte formation during exposure to increased temperatures (2022)
    PANGAEA
    Details
    Publikationsdatum: 2023-07-18
    Beschreibung: To assess the thermal adaptation of microscopic stages of the kelp Laminaria digitata along latitudes, we conducted laboratory experiments on samples from six locations in the NE Atlantic (Spitsbergen (SPT), Tromsø (TRM), Bodø (BOD; all Norway), Helgoland (HLG; Germany), Roscoff (ROS) and Quiberon (QUI; both France)), spanning the species' entire distribution range. Gametophyte stock cultures from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research were used. Prior to the experiments, cultures were stored at 15°C in iron-free ½ Provasoli enriched seawater in 3-4 µmol photons/m²/s red light. In experiment 1, we exposed gametophytes to (sub-) lethal high priming temperatures (20-25°C) for two weeks, followed by two weeks of recovery at 15°C, to observe gametophyte survival and sporophyte formation. During the experiments, samples were kept in 15 µmol photons/m²/s white light under a 16:8h light:dark cycle.
    Schlagwort(e): Bodø_L_digitata_culture; common garden experiment; Counting, Stereo Microscope; DATE/TIME; Event label; Experiment day; gametogenesis; growth; Hand picking; Helgoland_L_digitata_culture-2; Identification; kelp; Laboratory experiment; Laminaria digitata, gametophyte survival; Laminaria digitata, sporophyte formation; latitude; Local adaptation; North Atlantic; Northeast Atlantic; Origin; Quiberon_L_digitata_culture; Reproduction; Roscoff_L_digitata_culture; Species; Survival; Temperature; Temperature, water; Treatment: period; Tromsø_L_digitata_culture; Type of study; Uniform resource locator/link to reference; upper survival temperature
    Materialart: Dataset
    Format: text/tab-separated-values, 9671 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unbekannt
    Laminaria digitata gametophyte survival and microscopic sporophyte formation, abundance and growth during exposure to decreased temperatures (2022)
    PANGAEA
    Details
    Publikationsdatum: 2023-07-18
    Beschreibung: To assess the thermal adaptation of microscopic stages of the kelp Laminaria digitata along latitudes, we conducted laboratory experiments on samples from six locations in the NE Atlantic (Spitsbergen (SPT), Tromsø (TRM), Bodø (BOD; all Norway), Helgoland (HLG; Germany), Roscoff (ROS) and Quiberon (QUI; both France)), spanning the species' entire distribution range. Gametophyte stock cultures from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research were used. Prior to the experiments, cultures were stored at 15°C in iron-free ½ Provasoli enriched seawater in 3-4 µmol photons/m²/s red light. In experiment 2, samples were subjected to (sub-) optimal low temperatures (0-15°C) for 21 days, to assess gametophyte survival, sporophyte formation and growth. During the experiments, samples were kept in 15 µmol photons/m²/s white light under a 16:8h light:dark cycle. Sporophyte growth rates both in length and in width were determined as follows: GR = (x2-x1)/(t2-t1), where x is the length or width (μm) and t is the time in weeks at time point 1 and 2.
    Schlagwort(e): Calculated; common garden experiment; Counting, Stereo Microscope; DATE/TIME; Event label; Experiment day; gametogenesis; growth; Hand picking; Identification; kelp; Laboratory experiment; Laminaria digitata, gametophyte survival; Laminaria digitata, sporophyte abundance; Laminaria digitata, sporophyte formation; Laminaria digitata, sporophyte growth rate in length; Laminaria digitata, sporophyte growth rate in width; Laminaria digitata, sporophyte length to width ratio; latitude; Local adaptation; North Atlantic; Northeast Atlantic; Origin; Quiberon_L_digitata_culture; Reproduction; Species; Spitsbergen_L_digitata_culture-2; Survival; Temperature; Temperature, water; Treatment: period; Tromsø_L_digitata_culture; Type of study; Uniform resource locator/link to reference; upper survival temperature
    Materialart: Dataset
    Format: text/tab-separated-values, 2070 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unbekannt
    Integrated survival of Laminaria digitata gametophytes exposed to increased temperatures (2022)
    PANGAEA
    Details
    Publikationsdatum: 2023-07-18
    Beschreibung: To assess the thermal adaptation of microscopic stages of the kelp Laminaria digitata along latitudes, we conducted laboratory experiments on samples from six locations in the NE Atlantic (Spitsbergen (SPT), Tromsø (TRM), Bodø (BOD; all Norway), Helgoland (HLG; Germany), Roscoff (ROS) and Quiberon (QUI; both France)), spanning the species' entire distribution range. Gametophyte stock cultures from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research were used. Prior to the experiments, cultures were stored at 15°C in iron-free ½ Provasoli enriched seawater in 3-4 µmol photons/m²/s red light. In experiment 1, we exposed gametophytes to (sub-) lethal high priming temperatures (20-25°C) for two weeks, followed by two weeks of recovery at 15°C, to observe gametophyte survival and sporophyte formation. During the experiments, samples were kept in 15 µmol photons/m²/s white light under a 16:8h light:dark cycle.
    Schlagwort(e): Bodø_L_digitata_culture; common garden experiment; Counting, Stereo Microscope; DATE/TIME; Event label; Experiment day; gametogenesis; growth; Hand picking; Helgoland_L_digitata_culture-2; kelp; Laboratory experiment; Laminaria digitata, gametophyte survival; latitude; Local adaptation; North Atlantic; Northeast Atlantic; Origin; Quiberon_L_digitata_culture; Reproduction; Roscoff_L_digitata_culture; Species; Survival; Temperature; Temperature, water; Tromsø_L_digitata_culture; Type of study; Uniform resource locator/link to reference; upper survival temperature
    Materialart: Dataset
    Format: text/tab-separated-values, 1436 data points
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...