ALBERT

Note: Contents 1 Marine Ecosystem: An Overview 1.1 Benthic Compartment 1.1.1 Supralittoral Zone 1.1.2 Eulittoral Zone 1.1.3 Sublittoral Zone 1.1.4 Continental Shelf 1.1.5 Continental Slope 1.1.6 Bathyal Zone 1.1.7 Abyssal Plains 1.1.8 Hadal Zone 1.2 Aquatic Compartment 1.2.1 Classification on the Basis of Light Penetration 1.2.2 How to Estimate the Age of Ocean Water? 1.2.3 Dissolved Oxygen (DO) Consumption Method 1.2.4 Decay Rate of 14C Method 1.2.5 90Sr Content Method 1.2.6 Hydrogen Isotope Method Brain Churners Annexure References 2 Estuarine Ecosystem: An Overview 2.1 Definition and Ecosystem Services 2.1.1 Ecosystem Services 2.2 Classification Brain Churners Annexure References 3 Physical Processes in the Marine and Estuarine Ecosystems 3.1 Waves and Tides 3.1.1 Tides 3.1.2 Theories Related to Tides 3.1.3 Tidal Bore and Tide in Rivers 3.2 Currents 3.2.1 Upwelling and Downwelling: Causes and Significance 3.2.2 Factors Regulating the Pattern and Distribution of Currents 3.2.3 What Happens Practically? 3.2.4 El Niño Brain Churners Annexure References 4 Abiotic Variables of the Marine and Estuarine Ecosystems 4.1 Chemical Components 4.1.1 Spatio-temporal Variations of Salinity 4.1.2 Deep-Water Salinity 4.1.3 Conservative and Non-conservative Ions 4.1.4 Dissolved Gases in Seawater 4.1.5 Nutrients 4.2 Sediment Compartment 4.2.1 Transportation of Marine Sediments 4.2.2 Classification of Marine Sediments 4.2.3 Ooze: Definition and Type 4.2.4 Sediment Deposition: A Boon or a Curse? Brain Churners Annexure References 5 Producers of the Marine and Estuarine Ecosystems 5.1 Phytoplankton Community 5.1.1 Diatoms 5.1.2 Dinoflagellates 5.1.3 Coccolithophores 5.1.4 Blue-Green Algae 5.1.5 Green Algae 5.1.6 Classification of Phytoplankton 5.2 Macrophytes 5.2.1 Seaweed Community 5.2.2 Mangroves 5.2.3 Seagrass and Salt Marsh Grass Brain Churners Annexure References 6 Consumers of the Marine and Estuarine Ecosystems 6.1 Zooplankton Community 6.1.1 Zooplankton: Do They Maintain Uniformity in Their Life Timeline? 6.2 Vertebrate Community 6.2.1 Fishes 6.2.2 Reptiles 6.2.3 Sea Birds 6.2.4 Marine Mammals Brain Churners Annexure References 7 Decomposers of the Marine and Estuarine Ecosystems 7.1 Overview of Marine and Estuarine Microbes 7.1.1 Marine Organisms as Habitats of Microorganisms 7.1.2 Identification of Marine and Estuarine Microorganisms: A Molecular Genetic Approach 7.2 Importance of Marine and Estuarine Microbes 7.2.1 Production of Antibiotics 7.2.2 Production of Antitumour Compounds 7.2.3 Production of Enzyme 7.2.4 Bioremediation of Petroleum Hydrocarbon 7.2.5 Degradation of Mangrove Litter 7.2.6 Drugs from Marine Microbes Brain Churners Annexure References 8 Adaptation of Marine and Estuarine Organisms 8.1 Adaptation of Organisms in the Intertidal Zone 8.1.1 Adaptation of Biota Inhabiting Rocky Shore 8.1.2 Adaptation of Biota Inhabiting Soft Substratum 8.2 Adaptation of Organisms Inhabiting Deep Sea 8.2.1 Morphological Adaptations 8.2.2 Biochemical Adaptations 8.2.3 Vent Communities of the Deep Sea 8.2.4 Properties of Vent Community Brain Churners Annexure References 9 Hot Spots of Marine and Estuarine Ecosystems 9.1 Mangroves 9.2 Coral Reefs 9.2.1 Types of Coral Reefs 9.2.2 Coral Reef Characteristics 9.2.3 Reef Productivity Brain Churners Annexure References 10 Threats to Marine and Estuarine Ecosystems 10.1 Natural Threats 10.1.1 Alteration of the Earth’s Orbit 10.1.2 Natural Oscillation of Atmospheric Carbon Dioxide 10.1.3 Volcanic Activities 10.1.4 Variations in Solar Output 10.1.5 Plate Tectonics 10.1.6 Natural Disasters and Extreme Weather Events 10.2 Anthropogenic Threats 10.2.1 Pollution 10.2.2 Aquaculture 10.2.3 Unplanned Tourism 10.2.4 Introduction of Alien Species 10.2.5 Development of Coastal Structures 10.2.6 Negative Fishing Brain Churners Annexure References 11 Conservation of Marine and Estuarine Resources 11.1 Conservation or Preservation? 11.2 Tiers for Conservation 11.2.1 Habitat Diversity 11.2.2 Community and Ecosystem Diversity 11.2.3 Functional Diversity 11.2.4 Population Diversity 11.2.5 Phyletic Diversity 11.2.6 Species Diversity 11.2.7 Genetic Diversity Brain Churners Annexure References 12 Instruments and Methods 12.1 Instruments 12.1.1 Instruments Used for Physical Oceanographic Study 12.1.2 Instruments Used for Geological Oceanographic Study 12.1.3 Instruments Used for Chemical Oceanographic Study 12.1.4 Instruments Used for Biological Oceanographic Study 12.2 Application of Satellites in Marine and Estuarine Researches Brain Churners Annexure References Erratum