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  • 1
    Online Resource
    Online Resource
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Keywords: Marine biology. ; Electronic books.
    Description / Table of Contents: This book covers all aspects of seaweed: acclimation in the abiotic environment, biotic interactions in seaweed communities, structure and function of seaweed systems, environmental changes and seaweed aquaculture. Includes industrial and economic aspects.
    Type of Medium: Online Resource
    Pages: 1 online resource (507 pages)
    Edition: 1st ed.
    ISBN: 9783642284519
    Series Statement: Ecological Studies ; v.219
    DDC: 579.88
    Language: English
    Note: Intro -- Seaweed Biology -- Novel Insights into Ecophysiology, Ecology and Utilization -- Preface -- Contents -- Part I: Fundamental Processes and Acclimation to Abiotic Environmental Variables -- Chapter 1: Physiological and Photomorphogenic Effects of Light on Marine Macrophytes -- 1.1 Introduction -- 1.2 Photosynthesis Under Limiting Light Conditions -- 1.3 Photosynthesis Under Excessive Light Conditions -- 1.4 Effect of Ultraviolet Radiation on Zonation of Macroalgae -- 1.5 Light Absorption and Light Spectrum -- 1.6 Light as an Environmental Signal -- 1.7 Conclusive Remarks -- References -- Chapter 2: Morpho-functionality of Carbon Metabolism in Seaweeds -- 2.1 Introduction -- 2.2 Inorganic Carbon Acquisition -- 2.3 Photosynthetic Carbon Fixation -- 2.3.1 Calvin-Benson Cycle and RUBISCO -- 2.3.2 Rates of Carbon Fixation -- 2.3.3 Photorespiration -- 2.4 Light-Independent Carbon Fixation -- 2.5 Morpho-functional Aspects of Carbon Metabolism -- 2.5.1 The Role of Storage Carbohydrates -- 2.5.2 Thallus Anatomy and Long-Distance Transport of Photoassimilates -- 2.5.3 Patterns of Carbon Allocation -- 2.5.4 Concluding Remarks -- References -- Chapter 3: Seaweed Responses to Temperature -- 3.1 Introduction -- 3.2 Local Temperature Adaptation of Growth and Photosynthesis -- 3.3 Phenotypic Temperature Acclimation of Growth and Photosynthesis -- 3.4 Disruptive Temperature Stress and Thermal Tolerance -- 3.5 Temperature Control of Biogeographical Distribution Boundaries -- 3.6 Conclusion -- References -- Chapter 4: Environment and Algal Nutrition -- 4.1 Introduction -- 4.2 Meeting Nutritional Needs -- 4.2.1 Extracting Nutrients from their Environment -- 4.2.2 Neutral vs. Ionic Nutrients -- 4.2.3 N vs. P Limitation -- 4.2.4 Considering C as Just Another Nutrient -- 4.3 Uncoupling Uptake and Incorporation -- 4.4 Different Ways of N Utilization. , 4.4.1 Seaweed Diversity Linked to Nutrient Source -- 4.4.2 Slow-Growing vs. Fast-Growing Species -- 4.5 Use of Isotope Discrimination -- 4.6 Aquaculture -- 4.6.1 Nutrient Uptake at High Concentrations -- 4.7 Conclusions -- References -- Chapter 5: Seaweed Acclimation to Salinity and Desiccation Stress -- 5.1 Variability of Salinity in Seaweed Habitats -- 5.2 Effects of Salinity Stress and Desiccation on the Physiology of Seaweeds -- 5.2.1 Rate of Survival -- 5.2.2 Growth -- 5.2.3 Photosynthesis and Respiration -- 5.3 Processes of Osmotic Acclimation -- 5.3.1 Inorganic Ions -- 5.3.2 Organic Osmolytes -- 5.3.3 Biosynthesis of Organic Osmolytes -- 5.3.4 Antioxidants -- 5.3.5 Ultrastructural Changes -- 5.3.6 Self Protection -- 5.4 Salinity Ecotypes -- 5.5 Outlook -- References -- Chapter 6: Seaweed Responses to Environmental Stress: Reactive Oxygen and Antioxidative Strategies -- 6.1 Introduction -- 6.2 Stress-Induced ROS Production and Its Effects on Seaweed Performance -- 6.2.1 Seaweed Exposure to Heavy Metal Stress and Reactive Oxygen Metabolism -- 6.2.2 A Peculiar Antioxidant System in Kelp -- 6.3 Antioxidative Strategies in Seaweeds on Seasonal and Spatial Scales -- 6.3.1 SOD Activity in the Brown Seaweed Desmarestia anceps Along a Depth Gradient: A Case Study in Antarctica -- 6.3.2 Seasonal Changes in SOD Activity in Seaweeds from an Arctic Fjord -- 6.4 Oxidative Bursts: Reactive Oxygen and Interspecific Interaction -- 6.5 Summary -- References -- Part II: Biotic Interactions -- Chapter 7: Competition, a Major Factor Structuring Seaweed Communities -- 7.1 Competition Theory -- 7.2 Competition Among Marine Macroalgae -- 7.2.1 Overview -- 7.2.2 Competition for Light -- 7.2.3 Competition for Space -- 7.2.4 Competition for Nutrients -- 7.3 Competition in Complex Environments -- 7.3.1 Synergistic Effects of Different Factors. , 7.3.2 The Importance of Competition in Maintaining Marine Forests -- 7.3.3 Competition in the Face of Climate Change -- 7.4 Concluding Remarks -- References -- Chapter 8: Grazers on Benthic Seaweeds -- 8.1 Common Classification Systems of Grazers -- 8.2 Digestive Adaptations in Grazers -- 8.3 Grazer Impacts on Seaweeds and Seaweed Communities -- 8.4 Seaweed Defenses Against Grazing -- 8.5 Effects of Seaweed Chemical Defenses on Herbivores and Communities -- 8.6 Climate Change Effects on Seaweed-Herbivore Interactions -- 8.7 Conclusions -- References -- Chapter 9: Chemical Ecology of Seaweeds -- 9.1 Overview -- 9.2 Sensory Chemical Ecology -- 9.2.1 Chemical Communication -- 9.2.2 Environmental Sensing -- 9.3 Chemical Defense -- 9.3.1 Defenses Against Predation -- 9.3.2 Defenses Against Pathogens -- 9.3.3 Defenses Against Biofouling -- 9.3.4 Allelopathy -- 9.4 Outlook -- References -- Chapter 10: Bacterial Communities on Macroalgae -- 10.1 Introduction -- 10.2 Microbial Communities Associated with Macroalgae -- 10.3 Host-Specific Microbial Communities on Macroalgae? -- 10.4 A Model of Surface Colonization on Macroalgae -- 10.5 Conclusions -- References -- Chapter 11: Intimate Associations Between Epiphytes, Endophytes, and Parasites of Seaweeds -- 11.1 Introduction -- 11.2 Ecology and Biology of Close Biotic Interactions of Seaweeds -- 11.2.1 Epiphytes -- 11.2.2 Pigmented Endophytes -- 11.2.2.1 Endophytes in Red Algae -- 11.2.2.2 Endophytes in Brown Algae -- 11.2.2.3 Endophytes in Green Algae -- 11.2.2.4 Life History Stages of Seaweeds as Endophytic Filaments in Other Taxa -- Kelp Gametophytes in Red Filamentous Algae -- Green Algal Endophytes as Alternate Life History Phases of Acrosiphonia Species -- 11.2.3 Eukaryotic Parasites and Pathogens -- 11.2.3.1 Adelphoparasites and Alloparasites of Red Algae. , 11.2.3.2 Fungal and Oomycete Parasites and/or Pathogens -- 11.3 Cross-Talk Between Host and Colonizers and Defenses Against Colonization -- 11.3.1 Cross-Talk Involved in Host Colonization -- 11.3.2 ``Ménages à trois,´´ Quorum Sensing Mediated Bacterial-Macroalgal Interactions Modulate Colonization -- 11.3.3 Allelopathic Interactions and Induced Defenses -- 11.4 Impacts of Close Associations -- 11.4.1 Community Context -- 11.4.2 Implications to Seaweed Mariculture -- 11.4.3 Fouling -- 11.5 Summary and Prospects -- References -- Chapter 12: Invasive Marine Seaweeds: Pest or Prize? -- 12.1 Introduction -- 12.2 Biological Traits of Invasive Seaweeds -- 12.2.1 Seaweed Invasions Are Mostly Human-Mediated -- 12.3 The Identification of Introduced Seaweeds Is Not Always Easy -- 12.3.1 Relevant Taxonomic Units in Seaweeds Molecular Ecology -- 12.3.2 Case Study: Sargassum Muticum -- 12.3.3 Case Study: Undaria Pinnatifida -- 12.3.4 Case Study: Asparagopsis Armata -- 12.3.5 Case Study: Asparagopsis Taxiformis -- 12.3.6 Case Study: Codium Fragile ssp. Tomentosoides -- 12.3.7 Case Study: Caulerpa spp. -- 12.3.8 Assessing Seaweed Introductions -- 12.4 Are Introduced Species a Pest or Prize? A Crab´s Tale -- 12.4.1 Commercially Used Invasive Seaweeds -- 12.4.2 Gracilaria salicornia -- 12.4.3 Eucheuma and Kappaphycus spp. -- 12.4.4 Asparagopsis Species -- 12.4.5 Caulerpa Species -- 12.4.6 Ulva Species -- 12.4.7 Undaria pinnatifida -- 12.4.8 Codium Fragile Subspecies Tomentosoides -- 12.5 Conclusions -- References -- Part III: Structure and Function of the World´s Main Seaweed Systems -- Chapter 13: Seaweeds and Their Communities in Polar Regions -- 13.1 Introduction -- 13.2 Biodiversity and Biogeographical Relationships of Antarctic and Arctic Seaweeds -- 13.3 Physiological Adaptations to the Environment -- 13.3.1 Seasonal Development and Physiological Performance. , 13.3.2 Radiation Climate and Depth Zonation -- 13.3.3 Temperature Requirements and Geographic Distribution -- 13.3.4 Effect of Salinity, Temperature, and Desiccation on Supra- and Eulittoral Seaweeds -- 13.4 Ecology of Polar Seaweed Communities -- 13.4.1 Biomass, Depth Distribution, and Productivity -- 13.4.2 Elemental and Nutritional Content -- 13.4.3 Defenses Against Herbivory and Biofouling in Polar Seaweeds -- 13.4.4 Trophic Interactions -- 13.5 Impact of Global Climate Changes on Seaweeds and Their Communities -- 13.6 Conclusion -- References -- Chapter 14: Cold-Temperate Seaweed Communities of the Southern Hemisphere -- 14.1 The Regions and Their Basic Abiotic Conditions -- 14.1.1 Southwestern South America Region -- 14.1.2 Southeastern South America Region -- 14.1.3 Victoria-Tasmania Region -- 14.1.4 Southern New Zealand Region -- 14.1.5 Sub-Antarctic Islands Region -- 14.2 Structure and Function of Seaweed Communities -- 14.2.1 Southwestern South America Region (Chile) -- 14.2.2 Southeastern South America Region (Argentinean Patagonia) -- 14.2.3 Victoria-Tasmania Region -- 14.2.4 Southern New Zealand Region -- 14.2.5 Sub-Antarctic Islands Region -- 14.3 Biogeographical Processes -- 14.3.1 Cold-Temperate Kelps as Biogeographical Models -- 14.4 Major Differences with Cold Temperate Regions of the Northern Hemisphere -- 14.5 Concluding Remarks -- References -- Chapter 15: Warm Temperate Seaweed Communities: A Case Study of Deep Water Kelp Forests from the Alboran Sea (SW Mediterranean Sea) and the Strait of Gibraltar -- 15.1 Introduction: Kelp Forests and Kelp Beds in the Alboran Sea and the Strait of Gibraltar -- 15.2 Abiotic Factors Affecting Distribution of Kelps in the Alboran Sea and the Strait of Gibraltar -- 15.2.1 Substratum -- 15.2.2 Hydrodynamics -- 15.2.3 Irradiance -- 15.2.4 Temperature -- 15.2.5 Inorganic Nutrients. , 15.3 Growth and Reproduction.
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  • 2
    In: European journal of phycology, Cambridge [u.a.] : Cambridge Univ. Pr., 1993, 43(2008), 2, Seite 143-150, 0967-0262
    In: volume:43
    In: year:2008
    In: number:2
    In: pages:143-150
    Description / Table of Contents: For many coastal areas of the world, a decrease in abundance and depth penetration of perennial macroalgae and seagrasses has been documented and attributed to eutrophication. A surplus of nutrients impairs perennial seaweeds in at least two ways: increased phytoplankton densities reduce the depth penetration of light and in addition filamentous seaweeds and microalgae growing epiphytically shade their perennial hosts. A reduction of depth limit and total abundance has also been observed for the brown seaweed Fucus vesiculosus at many sites in the Baltic Sea. However, in most cases the mechanistic reason for the loss of Fucus has been deduced from observations rather than from experimental evidence. Here, we present results of a two-factorial (water depth/light supply and epibionts) experiment that was run in the Kiel Fjord, western Baltic, from August to October 2005. Performance of F. vesiculosus was recorded by growth and chlorophyll measurements, PI-curves and in situ measurements of the photosynthetic activity as the relative rate of electron transport (rETR). rETR and growth decreased with water depth. Chlorophyll a concentrations increased with reduced light intensities, but this apparently could not compensate for the light deficiency. Epibionts enhanced the negative effect of reduced light conditions on growth. According to these findings we estimated the physiological depth limit of F. vesiculosus in the Kiel Fjord to lie between 4 and 6m water depth.
    Type of Medium: Online Resource
    ISSN: 0967-0262
    Language: English
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  • 3
    Keywords: Marine algae Antarctica ; Ultraviolet radiation Arctic regions ; Photosynthesis ; Hochschulschrift ; Nordpolarmeer ; Meeresalgen ; Ultraviolett ; Photosynthese ; Nordpolarmeer ; Seetang ; Ultraviolett ; Photosynthese
    Type of Medium: Book
    Pages: XIII, 88 S. , graph. Darst.
    Series Statement: Berichte zur Polarforschung 375
    DDC: 579.8/177/09167
    RVK:
    Language: English , German
    Note: Literaturverz. S. 70 - 87 , Vollst. zugl.: Bremen, Univ., Diss., 2000
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  • 4
    Keywords: seagrass ; tropical ; trait-based approach ; Hochschulschrift
    Description / Table of Contents: Seagrasses are marine flowering plants that inhabit the coastal area forming important ecosystems due to a number of ecosystem services they provide. However, they are subjected to both global and local impacts, including warming water temperatures and eutrophication, which threaten their survival. Despite the fact that the most diverse seagrass meadows are found in the tropical Indo-Pacific Region, there is less information about tropical species than their temperate counterparts. There are, therefore, knowledge gaps in the response of tropical seagrass meadows to environmental drivers and their links to ecosystem functions and services. In the last three decades, trait-based frameworks (TBFs) have advanced different fields of ecological research through establishing novel links between functional traits, environmental drivers and ecosystem functions. A number of concepts have been proposed in order to answer different ecological questions using a functional trait-based perspective. This field of research has been widely developed in terrestrial plants. However, the use of TBFs in seagrass research is currently in its infancy. The goal of this dissertation is the incorporation of TBFs into seagrass ecological research, by establishing novel links between seagrass traits, environmental drivers and ecosystem functions and services. The study site chosen for this work was Unguja Island (Zanzibar Archipelago, Tanzania). Unguja Island is located in the tropical Indo-Pacific region, and is considered one of the hotspots of seagrass biodiversity worldwide. The seagrass meadows in Unguja Island are subjected to a wide range of conditions, from pristine and oligotrophic to heavily impacted and eutrophic. Due to its high seagrass diversity and the variety of conditions under which seagrass survive, Unguja Island is a perfect laboratory for the study of seagrass communities using a TBF. The research questions selected for this dissertation have the goal of understanding the importance of traits at different organizational levels, from their individual responses to environmental drivers, to the effect of traits on the interspecific competition of seagrass species and, lastly, their effect on ecosystem functioning. First, to assess the knowledge gaps in seagrass trait-based research, I carried out a systematic review of the seagrass literature. The analysis showed that seagrass trait research has mostly focused on the effect of environmental drivers on traits (65%), whereas links between traits and functions are less common (33%). Despite the richness of trait-based data available, concepts related to TBFs are rare in the seagrass literature (7% of studies). These knowledge gaps in seagrasses indicate ample potential for further research. In order to address these knowledge gaps, I propose a TBF that can help guide future seagrass research. Secondly, the responses of traits of individual seagrass plants of tropical seagrass species (Halophila stipulacea, Cymodocea serrulata, Thalassia hemprichii and seedlings of Enhalus acoroides) were assessed to two environmental drivers: temperature (global) and nutrient enrichment (local). To achieve this aim, a 1-month experiment under laboratory conditions combining two temperature (maximum ambient temperature and current average temperature) and two nutrient (high and low nitrogen and phosphorus concentrations) treatments was conducted. The results of this experiment showed that trait responses are species-specific, and that temperature was a much more significant driver than nutrient enrichment. In the case of the seedlings of E. acoroides, they rely energetically in the reserves within the seedling and increasing temperature resulted in faster seedling development. T. hemprichii and C. serrulata showed an enhanced morphology, while the contrary was true for H. stipulacea. These results highlight the different effects and strategies that co-inhabiting seagrasses have in response to environmental changes. Thirdly, an experiment was developed in the field to test the effects of light shading and trampling due to the farming of Euchema denticulatum on seagrass meadows, an environmental driver endemic to the tropical region. Areas covered by T. hemprichii, H. stipulacea were selected for the building of seaweed farms for 3 months. Light was reduced in the seaweed farm plots by 75 to 90% by the end of a seaweed growth cycle. The responses of seagrass were, again, species-specific. H. stipulacea, despite its capacity for rapid growth, was significantly affected by the combination of shading and trampling under the seaweed farm treatment, while the climax seagrass species T. hemprichii was unaffected. Fourthly, to link individual plant traits to seagrass community level processes, I carried out an observational study in Unguja Island. The goal was to understand how seagrass traits linked to light and nutrient competition affected space preemption among seagrass species under different trophic scenarios. Traits determining the functional strategy of the seagrass showed that there was a size gradient in the seagrass species. When tested the effect of the difference in the functional strategy of species pairs, the probability of preemption was highest for the bigger species, increased when their size difference was higher and was not affected by the eutrophication. This indicated that the competitive interactions among seagrass species were asymmetrical, i.e. a species had a negative effect on another species, while the effect was not reciprocal and the driver behind space preemption was determined by traits related to the size of the seagrass plants. Fifthly, to study the link between seagrass traits and ecosystem functions, sediment cores were collected and compared within seagrass meadows of varying communities across sites of Unguja Island. The goal was to find out which seagrass traits are relevant indicators of carbon storage, and which environmental conditions constrain the storage of carbon in the sediments. Very fine sediments (〈125 μm) were negatively correlated to organic carbon in the sediment. Leaf area index of seagrass was positively correlated to organic carbon content in the sediment, indicating an effect of particle trapping and retention. Root maximum length was the most important functional trait driving carbon storage, suggesting that rooting depth is of fundamental importance for carbon accumulation. To conclude, TBFs can help to push seagrass research forward by the study of traits from the individual plant level, scaling up their effects on the seagrass community, interspecific competition and, lastly, ecosystem functioning. The individual trait responses of seagrass to environmental drivers, through adaptive processes, have fundamental consequences for interspecific competition and, ecosystem function. Changes in seagrass morphology can determine the outcome of interspecific competition for nutrients and light and, therefore, the final configuration of seagrass meadows. These traits of the species in the meadow ultimately determine the capacity of the meadow for carbon storage, which shows a prime example of how traits can affect important seagrass ecosystem functions.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (296 Seiten) , Illustrationen
    Language: English
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  • 5
    Keywords: Meereskunde ; Meeresbiologie ; Meeresökologie ; Aufsatzsammlung ; Meereskunde ; Meeresbiologie ; Meeresökologie
    Description / Table of Contents: Die Themenvielfalt reicht von Flora und Fauna des arktischen Meereises über Mikroplastikmüll im Meer bis hin zur Überfischung und die nachhaltige Nutzung des Meeres. Wichtige Werkzeuge der Mikrobiologen wie Forschungsschiffe, Unterwasserroboter, Gensonden und Datenbanken werden in verständlichen Artikeln beschrieben, Exkurse über die Geschichte und Struktur der meeresbiologischen Forschung in Deutschland runden den Titel ab. (2)
    Type of Medium: Book
    Pages: XXII, 573 Seiten , Illustrationen (überwiegend farbig) , 23.5 cm x 15.5 cm
    Edition: 2. Auflage
    ISBN: 3662497131 , 9783662497135
    DDC: 577.7
    RVK:
    RVK:
    Language: German
    Note: Literaturangaben , Enthält 55 Beiträge
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  • 6
    Online Resource
    Online Resource
    Berlin, Heidelberg : Springer
    Keywords: Life sciences ; Aquatic ecology ; Nature ; Environment ; Marine sciences ; Freshwater ; Life Sciences ; Oceanography. ; Ecology . ; Life sciences ; Aquatic ecology ; Nature ; Environment ; Marine sciences ; Freshwater ; Meereskunde ; Meeresbiologie ; Meeresökologie ; Aufsatzsammlung ; Meereskunde ; Meeresbiologie ; Meeresökologie
    Description / Table of Contents: Prolog -- 1 Die physikalische Umwelt „Meer“ -- 2 Der marine Kohlenstoffkreislauf -- 3 Das Pelagial -- 4 Eine virtuelle Reise durch den Atlantik – Energieflüsse, Nahrungswege und Anpassungspfade -- 5 Das Leben im Eispalast: Flora und Fauna des arktischen Meereises -- 6. Wechselwirkungen zwischen Meeresboden und Ozean: Die pelago-benthische Kopplung im Südpolarmeer -- 7 Auftriebsgebiete und El Niño -- 8 Das Bakterioplankton – Riese und Regulator im marinen Stoffumsatz -- 9 Das Phytoplankton im Überblick -- 10 Die wichtigsten Gruppen des Zooplanktons -- 11 Krill und Salpen prägen das antarktische Ökosystem -- 12 Mikroplastikmüll im Meer -- 13 Tintenfische – die Spitzenathleten der Weltmeere,- 14 Meeresschildkröten haben es schwer -- 15 Fischbrut im Nahrungsnetz -- 16 Der arktische Polardorsch und der Antarktische Silberfisch: Erfolgsgeschichten im Eismeer -- 17 Seevögel und ihre Ernährungsweisen als Spiegel der Meeresumwelt -- 18. Schweinswale in der Ostsee – Forschung für den Artenschutz -- 19 Leben am Meeresboden -- 20 Mikroorganismen des Tiefseebodens: Vielfalt, Verteilung, Funktion -- 21 Stabilität, Störungen oder Zufall: Was steuert marine Biodiversität? -- 22 Dunkle Energie: Symbiosen zwischen Tieren und chemosynthetischen Bakterien -- 23 Meeresküsten – ein Überblick -- 24 Leben auf festem Grund – Hartbodengemeinschaften -- 25 Muschelbänke, Seegraswiesen und Watten an Sand- und Schlickküsten -- 26 Mikroalgen in der Grenzschicht zwischen Sediment und Wasser -- 27 Wälder unter Wasser – Großalgengemeinschaften -- 28 Mangroven – Wälder zwischen Land und Meer -- 29 Ökosystem Korallenriff – Schatzkammer der Meere -- 30 Die Ostsee -- 31. Belastungen unserer Meere durch den Menschen -- 32 Wie wirkt der Klimawandel auf das Leben im Meer? -- 33 Ozeanversauerung: Gewinner und Verlierer im Plankton -- 34 CO2-Wirkung auf Meerestiere -- 35 Helgoland, Krill und Klimawandel -- 36 Klimaflüchtlinge, Migranten und Invasoren -- 37 Die Weltfischerei – mit weniger Aufwand fängt man mehr -- 38 Nachhaltiges Fischereimanagement – kann es das geben? -- 39 Zum Beispiel Kabeljau und Hering: Fischerei, Überfischung und Fischereimanagement im Nordatlantik -- 40 Der tote Leviathan – ein Streifzug durch die Geschichte des antarktischen Walfangs -- 41 Sushi und die Algenfarmen -- 42 Kultur von Meerestieren– mehr Eiweißnahrung aus dem Meer -- 43 Über Forschungsschiffe -- 44 Der Hausgarten in der Framstraße: Von der Momentaufnahme zur Langzeituntersuchung -- 45 Neue Methoden der Artbestimmung -- 46 Zeitmaschine DNA – die verschlüsselte Evolutionsgeschichte im Erbgut -- 47 Computermodelle als Werkzeuge der Meeresökologen -- 48 Meeresbiologische Forschungsinstitute in Deutschland -- Epilog.
    Type of Medium: Online Resource
    Pages: Online-Ressource (XXII, 573 S. 220 Abb. in Farbe, online resource)
    Edition: 2. Aufl. 2017
    ISBN: 9783662497142
    Series Statement: SpringerLink
    RVK:
    RVK:
    Language: German
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  • 7
    In: Faszination Meeresforschung, Bremen : Hauschild, 2006, (2006), Seite 222-228, 3897573105
    In: 9783897573109
    In: year:2006
    In: pages:222-228
    Type of Medium: Article
    Language: German
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  • 8
    Book
    Book
    Cambridge : Cambridge University Press
    Keywords: Marine algae Ecophysiology ; Marine algae Ecophysiology ; Meeresalgen ; Autökologie
    Type of Medium: Book
    Pages: xiv, 551 Seiten , Illustrationen, Diagramme , 25 cm
    Edition: Second edition
    ISBN: 9780521145954
    DDC: 579.8177
    RVK:
    Language: English
    Note: Originally published: Seaweed ecology and physiology / Christopher S. Lobban, Paul J. Harrison. Cambridge ; New York : Cambridge University Press, 1994. - Includes bibliographical references. - Hier auch später erschienene, unveränderte Nachdrucke
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  • 9
    Type of Medium: Book
    Pages: XIV, 514 S. in 1 Teil , 235 mm x 155 mm, 801 g
    Edition: Aufl. 2012
    ISBN: 3642442145 , 9783642442148
    Series Statement: Ecological Studies 219
    DDC: 570
    Language: English
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  • 10
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: Kongsfjorden is a glacial fjord in the Arctic (Svalbard) that is influenced by both Atlantic and Arctic water masses and harbours a mixture of boreal and Arctic flora and fauna. Inputs from large tidal glaciers create steep environmental gradients in sedimentation and salinity along the length of this fjord. The glacial inputs cause reduced biomass and diversity in the benthic community in the inner fjord. Zooplankton suffers direct mortality from the glacial outflow and primary production is reduced because of limited light levels in the turbid, mixed inner waters. The magnitude of the glacial effects diminishes towards the outer fjord. Kongsfjorden is an important feeding ground for marine mammals and seabirds. Even though the fjord contains some boreal fauna, the prey consumed by upper trophic levels is mainly Arctic organisms. Marine mammals constitute the largest top-predator biomass, but seabirds have the largest energy intake and also export nutrients and energy out of the marine environment. Kongsfjorden has received a lot of research attention in the recent past. The current interest in the fjord is primarily based on the fact that Kongsfjorden is particularly suitable as a site for exploring the impacts of possible climate changes, with Atlantic water influx and melting of tidal glaciers both being linked to climate variability. The pelagic ecosystem is likely to be most sensitive to the Atlantic versus Arctic influence, whereas the benthic ecosystem is more affected by long-term changes in hydrography as well as changes in glacial runoff and sedimentation. Kongsfjorden will be an important Arctic monitoring site over the coming decades and a review of the current knowledge, and a gap analysis, are therefore warranted. Important knowledge gaps include a lack of quantitative data on production, abundance of key prey species, and the role of advection on the biological communities in the fjord.
    Type of Medium: Electronic Resource
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