ALBERT

Note: Contents 1 Introduction 1.1 What Is Permafrost and Where Does it Occur? 1.2 Research on Permafrost: A Shifting Focus from Ice to Carbon 1.3 The Permafrost Carbon Feedback 1.4 Setting the Stage 1.4.1 Climate in Permafrost Areas 1.4.2 Vegetation in Permafrost Areas 1.4.3 Peatlands and Wetlands 1.4.4 Soils 1.4.5 Ice Age Permafrost 1.4.6 Geomorphology 1.5 Recent and Future Climate Change 1.6 The Uncertain Future of Permafrost References 2 The Energy Balance of Permafrost Soils and Ecosystems 2.1 The Radiation Balance 2.2 Latent, Sensible and Conductive Heat Fluxes 2.2.1 Partitioning of the Radiative Flux into Turbulent and Conductive Fluxes 2.2.2 Measurement Uncertainty 2.3 Heat Balance of Vegetation Cover 2.4 Seasonality of the Surface Heat Balance Illustrated by Data 2.4.1 Summer 2.4.2 Winter Cooling 2.4.3 Changes in the Heat Balance and Climate Change 2.5 Ground Heat Flux 2.5.1 Soil Profile Scale 2.5.2 The Effect of Ground Surface Conditions on Soil Temperature and Heat Flux 2.5.3 Large Scale Approaches 2.6 Deeper Permafrost Temperature Profile and Lateral Heat Fluxes 2.7 Lakes and Other Water Bodies References 3 The Role of Ground Ice 3.1 Basic Soil Ice Characteristics 3.2 Ice Segregation and Frost Heave 3.2.1 Ice Segregation Process 3.2.2 Environmental Conditions for Ice Segregation 3.3 Cracking and Wedging 3.3.1 Processes of Ice Wedge Formation 3.3.2 Ice Wedges in the Landscape 3.4 Frost Mounds 3.4.1 Palsas and Similar Features 3.4.2 Pingos 3.5 Cryoturbation and Patterned Ground 3.6 Slope Process: Solifluction and Cryogenic Landslides 3.7 Contribution of Ice to Rock Weathering 3.8 Ice and Hydrology 3.8.1 Active Layer Hydrological Processes 3.8.2 Runoff and River Discharge 3.9 Thaw Lakes 3.9.1 Thaw Lake Formation and Geomorphology 3.9.2 Thaw Lake Disappearance 3.10 Mapping Ice Content References 4 Permafrost Carbon Quantities and Fluxes 4.1 The Ecosystem Carbon Balance 4.1.1 Terrestrial Environments 4.1.2 Lakes 4.1.3 The Greenhouse Gas Balance 4.2 Vegetation Primary Production 4.2.1 Photosynthesis and Carbon Allocation 4.2.2 Primary Production in a Cold Climate 4.3 Vegetation Composition: Effects on the Carbon Cycle 4.4 Carbon Quantity in Permafrost Soils and Frozen Deposits 4.4.1 Yedoma Deposits 4.4.2 Peat 4.4.3 Alluvial and Lake Sediments 4.4.4 Landscape-Scale Variation of the Soil Organic Carbon Stock 4.5 Soil Organic Matter Quality and Decomposition 4.5.1 Organic Matter Quality in Permafrost 4.5.2 Carbon Conservation in Permafrost 4.5.3 Decomposer Communities in Cold and Waterlogged Soils 4.5.4 Organic Matter Decomposition Reaction Rates and Their Dependence on Temperature 4.5.5 Nutrient Cycles and Nitrous Oxide 4.5.6 Ecosystem Methane Emission 4.6 Ecosystem Carbon Flux Data 4.6.1 Quantifying Ecosystem Carbon Fluxes of Permafrost Ecosystems by Surface Measurements 4.6.2 Temporal and Spatial Variability of Permafrost Ecosystem Carbon Fluxes References 5 Permafrost in Transition 5.1 Which Changes? 5.2 Diffuse Permafrost Thaw 5.2.1 Observations of Active Layer Thickness and Surface Subsidence 5.2.2 Relation of Active Layer Thickness with Climate Change 5.2.3 Carbon Cycle Effects of Active Layer and Soil Temperature Change 5.2.4 Self-Heating Effect 5.3 Permafrost Thaw and Geomorphological Change 5.3.1 Thaw Pond and Fen Development 5.3.2 Thaw Lake Expansion 5.3.3 Thaw Lake Carbon Cycle Change 5.3.4 Erosion 5.4 Hydrological Changes 5.4.1 Water Balance: Groundwater Hydrology and Permafrost Thaw 5.4.2 Water Balance: Precipitation and Evapotranspiration 5.4.3 River Discharge Changes and Flooding 5.4.4 Water Transport of Carbon and Nutrients 5.4.5 Soil Hydrology Changes – Wetting or Drying? 5.4.6 Soil Hydrology Changes – Carbon Cycle Effects References 6 Vegetation Change 6.1 Zonal Vegetation Shifts 6.1.1 Present Climate-Related Vegetation Change 6.1.2 Arctic Greening and Browning 6.1.3 Feedbacks on Climate and Soil Temperature 6.1.4 Carbon Balance Effects of Vegetation Change 6.1.5 Fire 6.2 Thawing Permafrost and Vegetation 6.2.1 Effects of Permafrost Thaw on Vegetation: Nutrient Release 6.2.2 Below-Ground Interaction of Root Systems with Nutrients and Soil Carbon 6.2.3 Abrupt Thaw and Vegetation 6.2.4 Resilience 6.3 Human Vegetation Disturbance: Industrialisation and Agriculture References 7 Methane 7.1 Deep CH4 Sources 7.2 Climate Change Related Release of Deep Permafrost CH4 7.3 Cryovolcanism: Gas Emission Craters 7.4 CH4 Emissions in Perspective: Ecosystem Emissons, CO2 and N2O References 8 Models: Forecasting the Present and Future of Permafrost 8.1 Land Surface Models 8.2 Permafrost Models 8.3 The Carbon Cycle in Models 8.4 Geomorphology: Lake Formation and Erosion in Models 8.5 Outlook References Glossary Index

Note: Contents Part I Fundamentals 1 Overview: Antecedents, Motivation and Necessity / Gabriel Cristóbal, Saúl Blanco, and Gloria Bueno 2 Diatom Classifications: What Purpose Do They Serve? / David M. Williams 3 Diatom Taxonomy and Identification Keys / Saúl Blanco 4 Naturally and Environmentally Driven Variations in Diatom Morphology: Implications for Diatom-Based Assessment of Water Quality / Adriana Olenici, C ̆alin Baciu, Saúl Blanco, and Soizic Morin Part II Sensing 5 Microscopic Modalities and Illumination Techniques / J. Piper and T. Piper 6 Light Filtering in Microscopy / J. Piper 7 Automatization Techniques. Slide Scanning / Carlos Sánchez, Jesús Ruiz-Santaquiteria Alegre, José Luis Espinosa Aranda, and Jesús Salido Part III Analysis 8 Segmentation Techniques / Gloria Bueno, Manuel G. Forero, Carlos A. Jacanamejoy, J. Alejandro Libreros, M. Milagro Fernandez-Carrobles, and Oscar Deniz 9 Diatom Feature Extraction and Classification / Noelia Vallez, Anibal Pedraza, Carlos Sánchez, Jesus Salido, Oscar Deniz, and Gloria Bueno 10 Multifocus and Multiexposure Techniques / Harbinder Singh, Gabriel Cristóbal, and Vinay Kumar 11 Stereoscopic Imaging of Diatoms in Light and Electron Microscopy / Robert Sturm 12 Geometric Morphometrics and the Shape of Microscopic Organisms / Ecaterina Fodor and Ovidiu Ioan Hâruta Part IV Applications 13 Water Quality Assessment / A. Goldenberg-Vilar, R. Álvarez-Troncoso, V. Roldán, and Saúl Blanco 14 Diatoms in Forensic Analysis / Eloy Girela-Lopez, Cristina M. Beltran-Aroca, and Herminia García-Mozo 15 Benthic Foraminifera and Diatoms as Ecological Indicators / Xavier Benito Glossary Index

Note: Contents 1 Introduction / Jørgen Berge, Geir Johnsen, and Jonathan H. Cohen 2 The Marine Physical Environment During the Polar Night / Finlo Cottier and Marie Porter 3 Light in the Polar Night / Jonathan H. Cohen, Jørgen Berge, Mark A. Moline, Geir Johnsen, and Artur P. Zolich 4 Marine Micro- and Macroalgae in the Polar Night / Geir Johnsen, Eva Leu, and Rolf Gradinger 5 Zooplankton in the Polar Night / Jørgen Berge, Malin Daase, Laura Hobbs, Stig Falk-Petersen, Gerald Darnis, and Janne E. Søreide 6 Benthic Communities in the Polar Night / Paul E. Renaud, William G. Ambrose Jr., and Jan Marcin Węsławski 7 Fish Ecology During the Polar Night / Maxime Geoffroy and Pierre Priou 8 Biological Clocks and Rhythms in Polar Organisms / Kim S. Last, N. Sören Häfker, Vicki J. Hendrick, Bettina Meyer, Damien Tran, and Fabio Piccolin 9 Sensor-Carrying Platforms / Asgeir J. Sørensen, Martin Ludvigsen, Petter Norgren, Øyvind Ødegård, and Finlo Cottier 10 Operative Habitat Mapping and Monitoring in the Polar Night / Geir Johnsen, Aksel A. Mogstad, Jørgen Berge, and Jonathan H. Cohen 11 Life and Light at the Dead of Night / Jørgen Berge and Geir Johnsen Index

Note: Contents The Impact of Microplastics on Filter-Feeding Megafauna / Maria Cristina Fossi, Matteo Baini, and Cristina Panti Microplastic Contamination of Sediment and Water Column in the Seine River Estuary / Soline Alligant, Johnny Gasperi, Aline Gangnery, Frank Maheux, Benjamin Simon, Marie-Pierre Halm-Lemille, Maria El Rakwe, Catherine Dreanno, Jérôme Cachot, and Bruno Tassin Plastic Debris in Urban Water and in Freshwater: Lessons Learned from Research Projects Launched in the Seine Basin Catchment / Johnny Gasperi, Soline Alligant, Rachid Dris, Romain Tramoy, Robin Treilles, and Bruno Tassin Insights on Ecotoxicological Effects of Microplastics in Marine Ecosystems: The EPHEMARE Project / Francesco Regoli, Marina Albentosa, Carlo Giacomo Avio, Annika Batel, Maria João Bebianno, Marie-Laure Bégout, Ricardo Beiras, Juan Bellas, Ronny Blust, Agathe Bour, Thomas Braunbeck, Jérôme Cachot, Camilla Catarci Carteny, Bettie Cormier, Xavier Cousin, Alberto Cuesta, María Ángeles Esteban, Marco Faimali, Chiara Gambardella, Francesca Garaventa, Stefania Gorbi, Lúcia Guilhermino, Ketil Hylland, Steffen H. Keiter, Kathrin Kopke, Bénédicte Morin, Alexandre Pacheco, Lucia Pittura, Raewyn M. Town, and Luis R. Vieira What Can Model Polystyrene Nanoparticles Can Teach Us on the Impact of Nanoplastics in Bivalves? Studies in Mytilus from the Molecular to the Organism Level / Manon Auguste, Teresa Balbi, Caterina Ciacci, and Laura Canesi In Vitro Effects of Mercury (Hg) on the Immune Function of Mediterranean Mussel (Mytilus Galloprovincialis) Are Enhanced in Presence of Microplastics in the Extracellular Medium / Concepción Martínez-Gómez, Juan Santos-Echeandía, José R. Rivera-Hernández, Ramón Ortuño, Marina Albentosa, and Víctor M. León Study of Chemical Pollutants over Marine Microplastics Based on Their Composition and Degradation Rate / Bárbara Abaroa-Pérez, Daura Vega-Moreno, and J. Joaquín Hernández-Brito Marine Litter: Are There Solutions to This Environmental Challenge? / Richard C. Thompson and Francesca De Falco Development of a Thermo Degradation Method to Assess Levels and Distribution of Microplastics in Marine Sediments and Its Application in Two Case Studies: The Northern Adriatic Sea (Italy) and Boknafjord (Norway) / Alessio Gomiero, Kjell Birger Øysæd, Pierluigi Strafella, Gianna Fabi, and Giuseppe Scarcella Microplastics Extraction and Counting from Wastewater and Sludge Through Elutriation and Hydrocyclone / Rubén Rodríguez-Alegre, Javier Eduardo Sánchez-Ramírez, Laura Pastor, Silvia Doñate, Adrián Marí, Abel Lara, and Edxon Licon Microfiber Pollution from Source to Mitigation / Francesca De Falco, Emilia Di Pace, Gennaro Gentile, Roberto Avolio, Maria Emanuela Errico, Maurizio Avella, and Mariacristina Cocca Textile Fibres in Mediterranean Surface Waters: Abundance and Composition / Giuseppe Suaria, Marta Musso, Aikaterini Achtypi, Deborah Bassotto, and Stefano Aliani When Size Matters – Textile Microfibers into the Environment / Francisco Belzagui, Carmen Gutiérrez-Bouzán, Antonio Álvarez-Sánchez, and Mercedes Vilaseca Derelict Fishing Gear – Removing a Source of Microplastics from the Marine Environment / Andrea Stolte, Jochen Lamp, Gabriele Dederer, Falk Schneider, Marta Kalinowska, Sylwia Migdal, Marek Press, Vesa Tschernij, and Andreas Frössberg Biodegradable Plastics Do not Form Chemically Persistent Microplastics / Francesco Degli Innocenti Controlled Aging and Degradation of Selected Plastics in Marine Environment: 12 Months of Follow-up / Luca Fambri, Roberto Caria, Fabrizio Atzori, Riccardo Ceccato, and Denis Lorenzi Inhalable Microplastics: A New Cause for Concern? / Frank J. Kelly, Joseph Levermore, and Stephanie Wright Microplastics and Nanoplastics Occurrence and Composition in Drinking Water from Akureyri Urban Area, Iceland / Ásta Margrét Ásmundsdóttir, Alessio Gomiero, and Kjell Birger Øysæd Association of Potential Human Pathogens with Microplastics in Freshwater Systems / Loriane Murphy, Kieran Germaine, David N. Dowling, Thomais Kakouli-Duarte, and John Cleary Sample Preparation and Analysis Methods of Microplastics / Tiziano Battistini, Masenka Mikuz, Giulia Dalla Fontana, Alessio Montarsolo, and Raffaella Mossotti INTO THE MED: Searching for Microplastics from Space to Deep-Sea / Catharina Pieper, Ana Martins, Erik Zettler, Clara Magalhães Loureiro, Victor Onink, Anu Heikkilä, Alexandre Epinoux, Ethan Edson, Vincenzo Donnarumma, Fons de Vogel, Kara Lavender Law, and Linda Amaral-Zettler Analysis of Marine Microplastics in the Water Column Sampled up to 300 M Depth / Daura Vega-Moreno, Bárbara Abaroa-Pérez, and J. Joaquín Hernández-Brito Macro and Microplastics in Stormwater and Combined Sewer Overflows in Paris Megacity / Robin Treilles, Johnny Gasperi, Mohamed Saad, Alain Rabier, Jérôme Breton, Vincent Rocher, Sabrina Guérin, and Bruno Tassin The Effect of Drinking Water Ozonation on Different Types of Submicron Plastic Particles / Gerardo Pulido-Reyes, Denise M. Mitrano, Ralf Kägi, and Urs von Gunten Microplastic in Coastal Areas - Impact of Waves, Sediments and Saltwater on the Degradation Behaviour / Maximilian P. Born and Holger Schüttrumpf The Role of Humic Acids on the Effects of Nanoplastics in Fish / I. Brandts, J. C. Balasch, A. Tvarijonaviciute, A. Barreto, M. A. Martins, L. Tort, M. Oliveira, and M. Teles Preliminary Data on the Polymer Type Identification from Estuarine Environmental Samples / Gonçalo Brás Gomes, Vanessa Morgado, and Carla Palma Qualitative and Quantitative Screening of Organic Pollutants Associated on Microplastics from Ofanto River (South Italy) / Claudia Campanale, Giuseppe Bagnuolo, Georg Dierkes, Carmine Massarelli, and Vito Felice Uricchio Assessment of Microplastic Pollution in Sarno River / Francesca De Falco, Emilia Di Pace, Gennaro Gentile, Rachele Castaldo, Roberto Avolio, Maria Emanuela Errico, Maurizio Avella, Giancarlo Chiavazzo, Mariateresa Imaparato, Francesca Montuoro, Luca Pucci, Stefania Di Vito, and Mariacristina Cocca Holistic Approach to the Marine Microplastics: Sampling, Characterization, Consequences / Agnieszka Dąbrowska Marine Microplastics at Santuario Pelagos / Agnieszka Dąbrowska Microplastics Uptake and Egestion Dynamics in Pacific Oysters, Magallana Gigas (Thunberg, 1793), Under Controlled Conditions / Philip Graham, Luca Palazzo, Stefano Carboni, Trevor Telfer, Maura Baroli, and Giuseppe Andrea de Lucia Extraction Protocol Optimization for Detection of Microplastics in Digestive System Contents of Loggerhead Turtle (Caretta Caretta) / Ludovica Di Renzo, Giuseppina Mascilongo, Federica Di Giacinto, Daniela Zezza, Gabriella Di Francesco, Vincenzo Olivieri, Miriam Berti, Antonio Petrini, and Nicola Ferri Study of Plastics Debris Collected on the North Beaches of the Garda Lake After the Severe Storm Vaia in Autumn 2018 / Luca Fambri, Giada Bombardelli, Claudia Gavazza, Alfredo Casagranda, Paola Battocchi, and Renzo Tomasi Microplastics and Polycyclic Aromatic Hydrocarbons Occurrence in a Demersal Fish (Solea solea) in the Adriatic Sea / Emanuela Frapiccini, Giulio Pellini, Alessio Gomiero, Giuseppe Scarcella, Stefano Guicciardi, Anna Annibaldi, Mattia Betti, and Mauro Marini Ecotoxicological Effects of Microplastics in Marine Zooplankton / Silvia Morgana, Chiara Gambardella, Elisa Costa, Veronica Piazza, Francesca Garaventa, and Marco Faimali Occurrence of Microplastics in the Gastrointestinal Tracts (GITs) of the Common Dolphinfish, Coryphaena Hippurus, from the Western Mediterranean Sea / Gabriella Schirinzi, Cristina Pedà, Franco Andaloro, Matteo Baini, Pietro Battaglia, Michela D’Alessandro, Martina Genovese, Marinella Farré, Cristina Panti, Maria Cristina Fossi, and Teresa Romeo Effects of Polymethacrylate Nanoplastics on Lipid Metabolism in Sparus Aurata / C. Barría, I. Brandts, J. C. Balasch, A. Tvarijonaviciute, A. Barreto, M. A. Martins, L. Tort, M. Oliveira, and M. Teles Measuring the Size and the Charge of Microplastics in Aqueous Suspensions With and With

Note: SECTION 4 Validation: Chapter 25. The IPWG satellite precipitation validation effort -- Chapter 26. The GPM Ground Validation Program -- Chapter 27. The GPM DPR Validation Program -- Chapter 28. Error and uncertainty characterization -- Chapter 29. Multiscale evaluation of satellite precipitation products: Effective resolution of IMERG -- Chapter 30. Remote sensing of orographic precipitation -- Chapter 31. Integrated multi-satellite evaluation for the Global Precipitation Measurement: Impact of precipitation types on spaceborne precipitation estimation -- Chapter 32. Hydrologic validation and flood analysis -- Chapter 33. Global-scale evaluation of 22 precipitation datasets using gauge observations and hydrological modeling -- Chapter 34. OceanRAIN – The global ocean surface-reference dataset for characterization, validation and evaluation of the water cycle -- SECTION 5 Observed Characteristics of Precipitation: Chapter 35. GPCP and the global characteristics of precipitation -- Chapter 36. Global snowfall detection and measurement -- Chapter 37. Snowfall detection by spaceborne radars -- Chapter 38. On the duration and lifecyle of precipitation systems in the tropics -- Chapter 39. Observational characteristics of warm-type heavy rainfall -- Chapter 40. Satellite precipitation measurement and extreme rainfall -- Chapter 41. Rainfall trends in East Africa from an ensemble of IR-based satellite products -- Chapter 42. Heavy precipitation systems in the Mediterranean area: The role of GPM -- Chapter 43. Dryland precipitation climatology from satellite observations -- Chapter 44. Haifall detection -- Chapter 45. Improving high-latitude and cold region precipitation analysis -- Chapter 46. Latent heating retrievals from satellite observations -- SECTION 6 Applications: Chapter 47. Operational applications of Global Precipitation Measurement observations -- Chapter 48. Assimilation of precipitation observations from space into numerical weather prediction (NWP) -- Chapter 49. Precipitation ensemble data assimilation in NWP models -- Chapter 50. PERSIANN-CDR for hydrology and hydro-climatic applications -- Chapter 51. Soil moisture and precipitation: The SM2RAIN algorithm for rainfall retrieval from satellite soil moisture -- Chapter 52. Drought risk management using satellite-based rainfall estimates -- Chapter 53. Two decades of urban hydroclimatological studies have yielded discovery and societal benefits -- Chapter 54. Validation of climate models -- Chapter 55. Extreme precipitation in the Himalayan landslide hotspot -- Chapter 56. The value of satellite rainfall estimates in agriculture and food security -- Chapter 57. Using satellite estimates of precipitation for fire danger rating -- Chapter 58. Variability of satellite sea surface salinity under rainfall.

Note: Contents 1 Introduction / Ola M. Johannessen 2 Sea Ice in the Arctic Paleoenvironments / Leonid P. Bobylev and Martin W. Miles 3 Marginal Ice Zone and Ice-Air-Ocean Interactions / Ola M. Johannessen, Stein Sandven, Richard Davy, and Einar O. Olason 4 Changes in Arctic Sea Ice Cover in the Twentieth and Twenty-First Centuries / Elena V. Shalina, Ola M. Johannessen, and Stein Sandven 5 Arctic Sea Ice Thickness and Volume Transformation / Elena V. Shalina, Kirill Khvorostovsky, and Stein Sandven 6 SAR Sea Ice Type Classification and Drift Retrieval in the Arctic / Natalia Y. Zakhvatkina, Denis Demchev, Stein Sandven, Vladimir A. Volkov, and Alexander S. Komarov 7 Sea Ice Drift in the Arctic / Vladimir A. Volkov, Alexandra Mushta, and Denis Demchev 8 Sea Ice Modelling / Matti Leppäranta, Valentin P. Meleshko, Petteri Uotila, and Tatiana Pavlova 9 Operational Forecasting of Sea Ice in the Arctic Using TOPAZ System / Laurent Bertino and Jiping Xie 10 Current and Projected Sea Ice in the Arctic in the Twenty-First Century / Valentin P. Meleshko, Tatiana Pavlova, Leonid P. Bobylev, and Pavel Golubkin 11 Climate Change Impact on the Arctic Economy / Lasse H. Pettersson, Anton G. Kjelaas, Dmitry V. Kovalevsky, and Klaus Hasselmann 12 Annex: SAR Sea Ice Interpretation Guide / Ola M. Johannessen Afterword / Ola M. Johannessen

Note: Contents 1 Introduction and Overview 1.1 Geochemistry of Fe 1.1.1 Fe Redox 1.2 Stable Isotope Geochemistry 1.2.1 Nomenclature 1.2.2 Isotopic Fractionation 1.2.3 Processes that Produce Isotopic Variations 1.3 Overview of the Chapters References 2 Analytical Methods 2.1 Introduction 2.2 Iron Purification Methods 2.3 Mass Spectrometry 2.3.1 Beginnings of Fe Isotope Analysis 2.3.2 Multi Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS) 2.3.3 Modern MC-ICP-MS Using Pseudo High Mass Resolution Methods 2.3.4 Matrix Effects and Instrumental Mass Fractionation Corrections 2.4 In Situ Techniques 2.5 Summary References 3 Fe Isotope Fractionation Factors 3.1 Introduction 3.2 Deriving Fe Isotope Fractionation Factors from First Principles 3.3 Experimental Methods for Measuring Fe Isotope Fractionation Factors 3.3.1 The Role of Sorption in Isotope Exchange 3.4 Equilibrium Fractionation of Fe Isotopes: Working Toward a Unified Set of Fractionation Factors 3.4.1 Aqueous Fe Species 3.4.2 Aqueous Fe Mineral Fractionation 3.5 Biological Experiments 3.5.1 Fe Oxidizing Experiments 3.5.2 Magnetotactic Bacteria 3.5.3 Fe Reducing Experiments 3.6 Preferred Set of b-Values 3.7 Summary References 4 High-Temperature Fe Isotope Geochemistry 4.1 Iron Isotope Variations in the Solar System 4.1.1 Chondrites and Chondritic Components 4.1.2 Differentiated Planetary Material 4.2 The Silicate Earth 4.2.1 The Mantle and Its Minerals 4.2.2 Basalts and Komatiites 4.2.3 Differentiated Crust 4.2.4 Magmatic Minerals 4.2.5 Hydrothermal Products and Ores 4.2.6 Metamorphic Rocks 4.3 Planetary Formation and Magmatic Processes 4.3.1 Planetary Accretion 4.3.2 Formation and Differentiation of Planetary Cores 4.3.3 Partial Melting on Earth and Other Planets 4.3.4 Mantle Metasomatism 4.3.5 Differentiation of Melts 4.3.6 The Mantle and Crust of the Earth as Compared to Other Planets 4.4 Summary References 5 The Modern Surficial World 5.1 Weathering 5.1.1 Mechanical Weathering 5.1.2 Chemical Weathering 5.1.3 Soils 5.2 Rivers and Groundwater 5.2.1 Rivers 5.2.2 Groundwater and Terrestrial Hydrothermal Systems 5.3 Redox-Stratified Water Bodies 5.3.1 Lake Water 5.3.2 Lake Sediments 5.3.3 The Black Sea 5.4 Marine Sediments 5.4.1 Reactive Fe Inventories 5.4.2 Pore Fluid-Sediment Interactions 5.4.3 Solid-Phase Fe Components 5.4.4 Benthic Fe Fluxes 5.5 The Fe Budget of the Modern Oceans 5.5.1 Seawater Fe 5.5.2 Riverine and Aeolian Sources 5.5.3 Benthic Sources 5.5.4 Hydrothermal Sources 5.6 Summary References 6 The Ancient Earth 6.1 The Cenozoic Marine System 6.1.1 Global Changes in the Cenozoic 6.1.2 Fe–Mn Crusts as Archives of Paleo-Seawater Compositions 6.1.3 Fe Isotope Variations in Cenozoic Seawater 6.2 Cretaceous Anoxic Events 6.2.1 Cenomanian-Turonian OAE-2 6.3 Precambrian Earth: An Introduction 6.3.1 Broad Changes in the Surface Earth in the Precambrian 6.3.2 Temporal Changes in Fe Abundance and Speciation 6.3.3 Differences in Marine Fe Pathways Between Modern and Ancient Earth 6.3.4 Authigenic Fe Isotope and Reactive Fe Trends 6.4 Precambrian Earth: The Neoproterozoic 6.4.1 Neoproterozoic Clastic Marine Sedimentary Rocks 6.4.2 Revisiting Reactive Fe Speciation and d56Fe 6.4.3 Neoproterozoic Iron Formations (IFs) 6.5 Precambrian Earth: The Paleoproterozoic and Neoarchean Transition Through the GOE 6.5.1 The Post-GOE Sedimentary Record 6.5.2 Changes in Weathering Across the GOE 6.5.3 Moving to a Low-Oxygen World: Key Issues of Fe Mass Balance, Fe Isotope Fractionation Factors, Fe 2+aq Oxidation, and the Age of Redox Proxies 6.5.4 Early Paleoproterozoic Iron Formations (IFs) 6.5.5 Early Paleoproterozoic Rise of Mn Redox 6.5.6 Paleoproterozoic and Neoarchean Continental Margins: Relations Between Shales, Carbonate Platforms, and IFs . 6.6 Precambrian Earth: The Early Archean Record 6.6.1 The Mesoarchean Witwatersrand and Pongola Basins 6.6.2 The Paleoarchean Barberton Greenstone Belt and Pilbara Craton 6.6.3 The High-Grade Metamorphic Terranes of the Eoarchean 6.7 Precambrian Earth: Synthesis of the Eoarchean Through Paleoproterozoic 6.8 Chapter Summary References

Note: Contents Part I Introduction 1 Antarctic Seaweeds: Biogeography, Adaptation, and Ecosystem Services / Iván Gómez and Pirjo Huovinen 1.1 Introduction: The Historical Context 1.2 Antarctic Seaweeds in the Wake of Climate Change 1.3 The Book 1.4 Gaps, Emerging Challenges, and Future Directions References Part II Diversity and Biogeography 2 Diversity of Antarctic Seaweeds / Mariana C. Oliveira, Franciane Pellizzari, Amanda S. Medeiros, and Nair S. Yokoya 2.1 The Antarctic Environment 2.2 Seaweeds in Antarctica: Definition and Importance 2.3 Seaweed Taxonomic Studies in Antarctica: Toward a New Species Compilation 2.4 Molecular Taxonomy for the Study of Antarctic Seaweed Diversity 2.5 Seaweed Distribution in Antarctica 2.6 Concluding Remarks: Gaps and Prospects for the Future References 3 Biogeographic Processes Influencing Antarctic and sub-Antarctic Seaweeds / Ceridwen I. Fraser, Adele Morrison, and Pamela Olmedo Rojas 3.1 Antarctica’s Place in the World: An Isolated Continent? 3.2 Physical Oceanographic Processes Influencing Movement of Seaweeds into or out of the Antarctic 3.3 Hitch-Hiking to the Antarctic: Passengers on Seaweed Rafts 3.4 Concluding Remarks References 4 Detached Seaweeds as Important Dispersal Agents Across the Southern Ocean / Erasmo C. Macaya, Fadia Tala, Iván A. Hinojosa, and Eva Rothäusler 4.1 Introduction 4.2 Detached Seaweeds in Antarctica 4.3 Abiotic Factors Influencing Floating Seaweeds 4.4 Biotic Factors Affecting Floating Seaweeds 4.5 Physiology of Floating and Drifting Seaweeds: Traspassing Thermal Barriers References 5 Biogeography of Antarctic Seaweeds Facing Climate Changes / Franciane Pellizzari, Luiz Henrique Rosa, and Nair S. Yokoya 5.1 The Abiotic Setting of the Southern Ocean 5.2 Biogeographic Patterns 5.3 Seaweed Assemblages: Are Antarctic Seaweed Diversity and Richness Changing? 5.4 The Physiological Bases of Macroalgal Shifts 5.5 Deception Island: A Case Study of Opportunistic, Alien, Cryptic and Cryptogenic Species 5.6 Reevaluating Eco-Regions, Isolation, and Endemism in the Southern Ocean 5.7 Concluding Remarks: Prospects for the Future Marine Flora of the Southern Ocean References 6 Comparative Phylogeography of Antarctic Seaweeds: Genetic Consequences of Historical Climatic Variations / Marie-Laure Guillemin, Claudio González-Wevar, Leyla Cárdenas, Hélène Dubrasquet, Ignacio Garrido, Alejandro Montecinos, Paula Ocaranza-Barrera, and Kamilla Flores Robles 6.1 Historical Isolation of Antarctic Marine Macroalgae 6.2 Antarctic Marine Macroalgae: Surviving Quaternary Glacial Cycles in Situ 6.3 Persistence in Multiple Isolated Glacial Refugia Versus a Single Antarctic Refugium 6.4 Antarctic Macroalgae Genetic Diversity: COI and TufA Sequences Data Sets 6.5 Brown, Red and Green Macroalgae: Sharing a Common Pattern of Glacial Impact and Postglacial Populations Recovery? 6.6 Concluding Remarks References Part III Physiology, Productivity and Environmental Reponses 7 Underwater Light Environment of Antarctic Seaweeds / Pirjo Huovinen and Iván Gómez 7.1 Introduction 7.2 Optics of Antarctic Coastal Waters 7.3 Adaptations of Antarctic Seaweeds to Extreme Light Conditions 7.4 Consequences for Light Field Under Current and Future Threats 7.5 Concluding Remarks References 8 Production and Biomass of Seaweeds in Newly Ice-Free Areas: Implications for Coastal Processes in a Changing Antarctic Environment / María L. Quartino, Leonardo A. Saravia, Gabriela L. Campana, Dolores Deregibus, Carolina V. Matula, Alicia L. Boraso, and Fernando R. Momo 8.1 Introduction: Seaweeds in Coastal Marine Ecosystems 8.2 Macroalgae and Carbon Fluxes in Antarctic Coastal Areas 8.3 Macroalgal Biomass Studies in Antarctica 8.4 The Ecosystem of Potter Cove: An Outstanding Case Study 8.5 A Dynamic Growth Model for Antarctic Macroalgae Under a Fast-Changing Environment 8.6 Seaweed Production in Present and Future Warming Scenarios 8.7 Future Prospects References 9 Carbon Balance Under a Changing Light Environment / Dolores Deregibus, Katharina Zacher, Inka Bartsch, Gabriela L. Campana, Fernando R. Momo, Christian Wiencke, Iván Gómez, and María L. Quartino 9.1 Introduction 9.2 Carbon Balance: A Case Study in Potter Cove 9.3 New Scenarios and Their Implications for Algal Photosynthesis 9.4 Concluding Remarks and Future Prospects References 10 Life History Strategies, Photosynthesis, and Stress Tolerance in Propagules of Antarctic Seaweeds / Nelso Navarro, Pirjo Huovinen, and Iván Gómez 10.1 Seasonal Strategies and Life History Cycles 10.2 Photosynthetic Light Requirements of Early Stages 10.3 Effects of Environmental Factors on the Biology of Propagules 10.4 Concluding Remarks: Biology of Propagules under Climate Change References 11 Form and Function in Antarctic Seaweeds: Photobiological Adaptations, Zonation Patterns, and Ecosystem Feedbacks / Iván Gómez and Pirjo Huovinen 11.1 Brief Overview of Form and Function in Seaweeds 11.2 Functional Groups of Seaweeds in the Antarctic 11.3 The Vertical Zonation of Antarctic Seaweeds: A Paradigm of Spatial Distribution of Different Morpho-functional Traits 11.4 Light Use Characteristics as a Major Factor Delineating Physiological Thallus Anatomy of Seaweeds 11.5 Form and Function in the Context of Life Strategies and Stress Tolerance 11.6 Functional Traits of Seaweeds and Properties of Benthic Communitie 11.7 Concluding Remarks References Part IV Biological Interactions and Ecosystem Processes 12 Successional Processes in Antarctic Benthic Algae / Gabriela L. Campana, Katharina Zacher, Fernando R. Momo, Dolores Deregibus, Juan Ignacio Debandi, Gustavo A. Ferreyra, Martha E. Ferrario, Christian Wiencke, and María L. Quartino 12.1 Introduction 12.2 Structural Patterns and Changes in Algal Community Composition during Succession 12.3 Ecological Factors Influencing Antarctic Algal Succession 12.4 Experimental Approaches to Study In Situ Succession of Antarctic Benthic Algae 12.5 Concluding Remarks and Perspectives References 13 Seaweed-Herbivore Interactions: Grazing as Biotic Filtering in Intertidal Antarctic Ecosystems / Nelson Valdivia 13.1 Biological Invasions and Their Impact on the Ecology of Antarctic Coastal Systems 13.2 Recent Introductions of Exotic Macroalgae in Antarctica 13.3 Can Grazers Control Alien Macroalgae in Antarctica? 13.4 Ulva intestinalis as a Case Study in a Simple, Two- Species Assembly Model 13.5 Concluding Remarks References 14 Diversity and Functioning of Antarctic Seaweed Microbiomes / Juan Diego Gaitan-Espitia and Matthias Schmid 14.1 Introduction: Environment and Antarctic Seaweed Host-Microbiome 14.2 Functional Interactions of Antarctic Seaweeds and Their Associated Microbiota 14.3 Deciphering the Structure and Diversity of Seaweed Microbiomes 14.4 Variation of Bacterial Community Diversity in Antarctic Seaweeds 14.5 Conclusions and Future Perspectives References 15 Seaweeds in the Antarctic Marine Coastal Food Web / Fernando R. Momo, Georgina Cordone, Tomás I. Marina, Vanesa Salinas, Gabriela L. Campana, Mariano A. Valli, Santiago R. Doyle, and Leonardo A. Saravia 15.1 Introduction 15.2 Food Webs and Seaweeds 15.3 Network Dynamics and Robustness 15.4 Non-Trophic Interactions 15.5 Final Remarks References 16 Trophic Networks and Ecosystem Functioning / Marco Ortiz, Brenda B. Hermosillo-Núñez, and Ferenc Jordán 16.1 Introduction 16.2 Macroscopic Ecosystem-Network Properties 16.3 Keystone Species Complex (KSC) 16.4 Contribution of Keystone Species Complex to Macroscopic Network Properties 16.5 Constrains and Perspectives Appendix 16.A References Part V Chemical Ecology 17 Chemical Mediation of Antarctic Macroalga-Grazer Interactions / Charles D. Amsler, James B. McClintock, and Bill J. Baker 17.1 Introduction 17.2 Feeding Bioassay Methodology 17.3 Antarctic Macroalgal Resistance to Herbivory 17.4 Macroalga-Invertebrate Interactions on the Western Antarctic Peninsula 17.5 Overview References 18 Brown Algal Phlorotannins: An Overview of Their Functional Roles / Iván Gómez and Pirjo

Note: Contents 1 Dynamical Processes in the Arctic Atmosphere / Marius O. Jonassen, Dmitry Chechin, Alexey Karpechko,Christof Lüpkes, Thomas Spengler, Annick Tepstra, Timo Vihma,and Xiangdong Zhang 2 Thermodynamics of the Arctic Atmosphere / Claudio Tomasi, Boyan H. Petkov, Oxana Drofa, and Mauro Mazzola 3 Trace Gases in the Arctic Atmosphere / Kimberly Strong, William R. Simpson, Kristof Bognar,Rodica Lindenmaier, and Sébastien Roche 4 Arctic Aerosols / Roberto Udisti, Rita Traversi, Silvia Becagli, Claudio Tomasi,Mauro Mazzola, Angelo Lupi, and Patricia K. Quinn 5 A Climatological Overview of Arctic Clouds / Abhay Devasthale, Joseph Sedlar, Michael Tjernström,and Alexander Kokhanovsky 6 Arctic Ice Fog: Its Microphysics and Prediction / Ismail Gultepe, Andrew J. Heymsfield, and Martin Gallagher 7 Polar Stratospheric Clouds in the Arctic / Francesco Cairo and Tiziana Colavitto 8 Noctilucent Clouds: General Properties and Remote Sensing / Christian von Savigny, Gerd Baumgarten, and Franz-Josef Lübkenix 9 Remote Sensing of Arctic Atmospheric Aerosols / Alexander Kokhanovsky, Claudio Tomasi, Alexander Smirnov,Andreas Herber, Roland Neuber, André Ehrlich, Angelo Lupi, Boyan H. Petkov, Mauro Mazzola, Christoph Ritter, Carlos Toledano,Thomas Carlund, Vito Vitale, Brent Holben, Tymon Zielinski,Simon Bélanger, Pierre Larouche, Stefan Kinne, Vladimir Radionov,Manfred Wendisch, Jason L. Tackett, and David M. Winker 10 Radiation in the Arctic Atmosphere and Atmosphere –Cryosphere Feedbacks / Claudio Tomasi, Boyan H. Petkov, Angelo Lupi, Mauro Mazzola,Christian Lanconelli, and Ismail Gultepe 11 Climate Change in the Arctic / Torben Koenigk, Jeff Key, and Timo Vihma Index

Note: Contents 1 Introduction 1.1 What Is Permafrost and Where Does it Occur? 1.2 Research on Permafrost: A Shifting Focus from Ice to Carbon 1.3 The Permafrost Carbon Feedback 1.4 Setting the Stage 1.4.1 Climate in Permafrost Areas 1.4.2 Vegetation in Permafrost Areas 1.4.3 Peatlands and Wetlands 1.4.4 Soils 1.4.5 Ice Age Permafrost 1.4.6 Geomorphology 1.5 Recent and Future Climate Change 1.6 The Uncertain Future of Permafrost References 2 The Energy Balance of Permafrost Soils and Ecosystems 2.1 The Radiation Balance 2.2 Latent, Sensible and Conductive Heat Fluxes 2.2.1 Partitioning of the Radiative Flux into Turbulent and Conductive Fluxes 2.2.2 Measurement Uncertainty 2.3 Heat Balance of Vegetation Cover 2.4 Seasonality of the Surface Heat Balance Illustrated by Data 2.4.1 Summer 2.4.2 Winter Cooling 2.4.3 Changes in the Heat Balance and Climate Change 2.5 Ground Heat Flux 2.5.1 Soil Profile Scale 2.5.2 The Effect of Ground Surface Conditions on Soil Temperature and Heat Flux 2.5.3 Large Scale Approaches 2.6 Deeper Permafrost Temperature Profile and Lateral Heat Fluxes 2.7 Lakes and Other Water Bodies References 3 The Role of Ground Ice 3.1 Basic Soil Ice Characteristics 3.2 Ice Segregation and Frost Heave 3.2.1 Ice Segregation Process 3.2.2 Environmental Conditions for Ice Segregation 3.3 Cracking and Wedging 3.3.1 Processes of Ice Wedge Formation 3.3.2 Ice Wedges in the Landscape 3.4 Frost Mounds 3.4.1 Palsas and Similar Features 3.4.2 Pingos 3.5 Cryoturbation and Patterned Ground 3.6 Slope Process: Solifluction and Cryogenic Landslides 3.7 Contribution of Ice to Rock Weathering 3.8 Ice and Hydrology 3.8.1 Active Layer Hydrological Processes 3.8.2 Runoff and River Discharge 3.9 Thaw Lakes 3.9.1 Thaw Lake Formation and Geomorphology 3.9.2 Thaw Lake Disappearance 3.10 Mapping Ice Content References 4 Permafrost Carbon Quantities and Fluxes 4.1 The Ecosystem Carbon Balance 4.1.1 Terrestrial Environments 4.1.2 Lakes 4.1.3 The Greenhouse Gas Balance 4.2 Vegetation Primary Production 4.2.1 Photosynthesis and Carbon Allocation 4.2.2 Primary Production in a Cold Climate 4.3 Vegetation Composition: Effects on the Carbon Cycle 4.4 Carbon Quantity in Permafrost Soils and Frozen Deposits 4.4.1 Yedoma Deposits 4.4.2 Peat 4.4.3 Alluvial and Lake Sediments 4.4.4 Landscape-Scale Variation of the Soil Organic Carbon Stock 4.5 Soil Organic Matter Quality and Decomposition 4.5.1 Organic Matter Quality in Permafrost 4.5.2 Carbon Conservation in Permafrost 4.5.3 Decomposer Communities in Cold and Waterlogged Soils 4.5.4 Organic Matter Decomposition Reaction Rates and Their Dependence on Temperature 4.5.5 Nutrient Cycles and Nitrous Oxide 4.5.6 Ecosystem Methane Emission 4.6 Ecosystem Carbon Flux Data 4.6.1 Quantifying Ecosystem Carbon Fluxes of Permafrost Ecosystems by Surface Measurements 4.6.2 Temporal and Spatial Variability of Permafrost Ecosystem Carbon Fluxes References 5 Permafrost in Transition 5.1 Which Changes? 5.2 Diffuse Permafrost Thaw 5.2.1 Observations of Active Layer Thickness and Surface Subsidence 5.2.2 Relation of Active Layer Thickness with Climate Change 5.2.3 Carbon Cycle Effects of Active Layer and Soil Temperature Change 5.2.4 Self-Heating Effect 5.3 Permafrost Thaw and Geomorphological Change 5.3.1 Thaw Pond and Fen Development 5.3.2 Thaw Lake Expansion 5.3.3 Thaw Lake Carbon Cycle Change 5.3.4 Erosion 5.4 Hydrological Changes 5.4.1 Water Balance: Groundwater Hydrology and Permafrost Thaw 5.4.2 Water Balance: Precipitation and Evapotranspiration 5.4.3 River Discharge Changes and Flooding 5.4.4 Water Transport of Carbon and Nutrients 5.4.5 Soil Hydrology Changes – Wetting or Drying? 5.4.6 Soil Hydrology Changes – Carbon Cycle Effects References 6 Vegetation Change 6.1 Zonal Vegetation Shifts 6.1.1 Present Climate-Related Vegetation Change 6.1.2 Arctic Greening and Browning 6.1.3 Feedbacks on Climate and Soil Temperature 6.1.4 Carbon Balance Effects of Vegetation Change 6.1.5 Fire 6.2 Thawing Permafrost and Vegetation 6.2.1 Effects of Permafrost Thaw on Vegetation: Nutrient Release 6.2.2 Below-Ground Interaction of Root Systems with Nutrients and Soil Carbon 6.2.3 Abrupt Thaw and Vegetation 6.2.4 Resilience 6.3 Human Vegetation Disturbance: Industrialisation and Agriculture References 7 Methane 7.1 Deep CH4 Sources 7.2 Climate Change Related Release of Deep Permafrost CH4 7.3 Cryovolcanism: Gas Emission Craters 7.4 CH4 Emissions in Perspective: Ecosystem Emissons, CO2 and N2O References 8 Models: Forecasting the Present and Future of Permafrost 8.1 Land Surface Models 8.2 Permafrost Models 8.3 The Carbon Cycle in Models 8.4 Geomorphology: Lake Formation and Erosion in Models 8.5 Outlook References Glossary Index

Note: Contents 1 Dynamical Processes in the Arctic Atmosphere / Marius O. Jonassen, Dmitry Chechin, Alexey Karpechko,Christof Lüpkes, Thomas Spengler, Annick Tepstra, Timo Vihma,and Xiangdong Zhang 2 Thermodynamics of the Arctic Atmosphere / Claudio Tomasi, Boyan H. Petkov, Oxana Drofa, and Mauro Mazzola 3 Trace Gases in the Arctic Atmosphere / Kimberly Strong, William R. Simpson, Kristof Bognar,Rodica Lindenmaier, and Sébastien Roche 4 Arctic Aerosols / Roberto Udisti, Rita Traversi, Silvia Becagli, Claudio Tomasi,Mauro Mazzola, Angelo Lupi, and Patricia K. Quinn 5 A Climatological Overview of Arctic Clouds / Abhay Devasthale, Joseph Sedlar, Michael Tjernström,and Alexander Kokhanovsky 6 Arctic Ice Fog: Its Microphysics and Prediction / Ismail Gultepe, Andrew J. Heymsfield, and Martin Gallagher 7 Polar Stratospheric Clouds in the Arctic / Francesco Cairo and Tiziana Colavitto 8 Noctilucent Clouds: General Properties and Remote Sensing / Christian von Savigny, Gerd Baumgarten, and Franz-Josef Lübkenix 9 Remote Sensing of Arctic Atmospheric Aerosols / Alexander Kokhanovsky, Claudio Tomasi, Alexander Smirnov,Andreas Herber, Roland Neuber, André Ehrlich, Angelo Lupi, Boyan H. Petkov, Mauro Mazzola, Christoph Ritter, Carlos Toledano,Thomas Carlund, Vito Vitale, Brent Holben, Tymon Zielinski,Simon Bélanger, Pierre Larouche, Stefan Kinne, Vladimir Radionov,Manfred Wendisch, Jason L. Tackett, and David M. Winker 10 Radiation in the Arctic Atmosphere and Atmosphere –Cryosphere Feedbacks / Claudio Tomasi, Boyan H. Petkov, Angelo Lupi, Mauro Mazzola,Christian Lanconelli, and Ismail Gultepe 11 Climate Change in the Arctic / Torben Koenigk, Jeff Key, and Timo Vihma Index