This book offers a comprehensive, unique and up-to-date exploration of diatom ecology spanning from fundamental molecular aspects to the intricate dynamics of metacommunities.
DescriptionIn recent years there has been a considerable increase in the amount of research devoted to diatom ecology, with a wide spectrum of approaches. This large amount of information, published in many different journals and books, makes it very difficult to keep up to date, both for the trained researcher and for students. Eduardo A. Morales (d. May 2023) had the original idea to assemble chapters on various subjects within diatom ecology. The questions he posed to potential contributors framed the current book consisting of 12 chapters.
●Are diatoms suitable tools for ecological restoration?
●What would be the features that make them reliable in this context?
●What makes diatoms ecologically successful?
●In an ecological sense, why is there such variability in diatom reproductive strategies and why are they worth considering?
●What do new approaches in ecological synthesis provide to diatom ecology, biogeography and metacommunities?
●Are all diatoms widely spread and each species uniquely characterized by its own, unaltered phenotype?
●Can we really make any ecological consideration without knowing (with a high degree of certainty) the identity of taxa?
●Are urban ecosystems important repositories of biodiversity?
●What are the benefits and the progress in diatom ecology made by the diatom guild perspective?
●Why, how and when are soil diatoms used in bioindication and what are the benefits of such an approach?
●Are diatoms bona fide indicators of climate change?
●Are diatom communities in temporary rivers important for these lotic ecosystems as they are subjected to the effects of climate change?
●Do diatoms in peatlands behave differently from their terrestrial and aquatic (rivers, lakes, others) counterparts?
Back to Top Table of ContentsPreface
1. Using Diatoms to Guide Successful Ecological RestorationEvelyn E. Gaiser
1.1 Introduction
1.2 Components of Successful Ecosystem Restoration
1.3 Incorporating Diatoms in Ecological Restoration
1.3.1 Incorporating Diatom Indicators in Aquatic Ecosystem Restoration Planning
1.3.2 Using Diatoms to Establish Restoration Goals and Targets
1.3.3 Diatom Metrics of Restoration Success
1.3.4 Adaptively Managing Ecological Condition
1.4 Communicating Diatom-Based Indicators of Restoration Progress
1.4.1 Communicating Restoration Progress
1.4.2 Public Education and Engagement
1.5 Summary and Opportunities
Acknowledgments
References
2. Abundance-Occupancy Relationships in Freshwaters: The Case of Pond DiatomsSaúl Blanco, María Borrego-Ramos and Óscar Fernández-Ramos
2.1 Introduction
2.2 Materials and Methods
2.2.1 Study Area
2.2.2 Sample Collection and Processing
2.2.3 Statistical Analysis
2.3 Results
2.4 Discussion
Acknowledgments
References
3. The Ecology of Diatom ReproductionDavid G. Mann and Mark B. Edlund
3.1 Introduction
3.2 Reports of Auxosporulation in Natural Populations
3.3 Ecological Significance of Auxosporulation
3.4 Future Prospects for Phenological Studies
Acknowledgments
References
4. Deterministic and Stochastic Effects on Freshwater Diatom Biodiversity and Community CompositionXavier Benito, Sophia I. Passy, Annika Vilmi, Aurélien Jamoneau, Juliette Tison-Rosebery, Maria Kahlert, Chad A. Larson, Joseph L. Mruzek, Janne Soininen and Andrew Bramburger
4.1 Introduction
4.2 Deterministic Effects on Diatom Metacommunities
4.3 Stochastic Effects on Diatom Metacommunities
4.4 Relative Importance of Deterministic and Stochastic Effects on Diatom Metacommunities
4.5 Assembly Processes Over Time
4.6 Assembly Processes Over Space
4.7 Concluding Remarks and Future Directions
References
5. Recent Insights into Diatom Distributions and the Contributions of Molecular ApproachesJana Kulichová and Rosa Trobajo
5.1 Introduction
5.2 A Metacommunity Framework
5.2.1 Abiotic Factors
5.2.2 Biotic Interactions
5.2.3 Dispersal
5.3 Metabarcoding
5.4 The Problem of Undersampling
5.5 Conclusions
Acknowledgment
References
6. Diatom Taxonomy: Disentangled from Ecology?Eileen J. Cox
6.1 Introduction
6.2 Diatom Taxonomy
6.2.1 Overview of Species Concepts and Changing Emphases
6.2.2 Naming and the Type Method
6.2.3 Impact of Molecular Studies
6.2.4 Morphological Variation Within Clones
6.2.5 Phenotypic Plasticity – Implications
6.2.6 Use of Infraspecific Categories for Diatom Taxa
6.3 Diatom Ecology
6.3.1 History of Diatom Ecology
6.3.1.1 Phytoplankton
6.3.1.2 Benthic Ecology
6.3.1.3 Paleolimnology
6.3.2 Diatoms as Bioindicators
6.3.3 Problems with Establishing Species ‘Preferences’
6.3.4 Implications of Experimental Work
6.3.5 What Do Molecular Studies Tell Us?
6.4 Where Are the Challenges?
6.5 Integrating Information
6.6 Conclusions
Acknowledgments
References
7. Diatom Biodiversity in Urban Freshwater Ecosystems: Opportunities and Challenges for ConservationMajoi de Novaes Nascimento and Luciane Fontana
7.1 Contextualizing Urban and Novel Ecosystems
7.2 Diatom Diversity in Novel Freshwater Ecosystems: Insights and Future Directions from a Systematic Literature Review
7.3 Mapping Gaps and Opportunities
7.4 Ecological Importance of Diatoms in Monitoring and Managing Urban Freshwater Ecosystems
7.5 Climate Change and Conservation of Diatom Biodiversity in Urban Systems
7.6 New Approaches and Perspectives for the Future
References
8. Guilds for Diatoms: History and Future ProspectsCsilla Stenger-Kovács and Viktória B-Béres
8.1 The Origin and History of the Guild Concept
8.2 Passy’s Idea: Use of the Guild Concept in Diatom Research
8.3 Relationship Between Guilds and Environmental Variables
8.3.1 Nutrients
8.3.2 Physical Disturbances
8.3.3 Light
8.3.4 Alkalinity and pH
8.3.5 Extreme Environments
8.4 Effect of Global Threatening Processes on Guilds
8.4.1 Direct Anthropogenic Pressures: Land Use, Urbanization, Mining and Salinization
8.4.2 Climatic Extremes, Intermittence, Floods
8.5 Diatom Guilds in Plankton and Their Ecological Role
8.6 Guild Dispersal, Guild-Based Metacommunity Analysis and Β-Diversity
8.6.1 Dispersal
8.6.2 Metacommunity Studies
8.6.3 Beta Diversity
8.7 Guilds in Conservation Biology Studies
8.8 Guilds in the Past, Present and Future
8.8.1 Guilds in Paleolimnological Studies
8.8.2 Recent Trends of Guild Distributions
8.8.3 Future Distribution of Diatom Guilds
8.9 Conclusion and Future Directions of the Guild Concept in Diatom Community Ecology
Acknowledgment
References
9. Soil Diatoms and Their Use in BioindicationJasper Foets and Eveline Pinseel
9.1 Introduction
9.2 Taxonomy
9.2.1 Methodological Protocols
9.3 Ecology
9.3.1 Adaptations to Non-Aquatic Conditions
9.3.2 Functionality on Soils
9.3.3 The Influence of Environmental Factors
9.3.3.1 Vitality and Absolute Abundances
9.3.3.2 Community Composition
9.3.3.3 The Impact of Herbicides and Oil Pollution on Soil Diatoms
9.4 Diatoms as Environmental Markers
9.4.1 Soil Quality Biomonitoring with Diatoms
9.4.2 Tracing Hydrological Connectivity with Soil Diatoms
9.4.3 Soil Diatoms as Environmental Markers: Major Challenges and Solutions
9.5 Soil Diatoms in Forensic Sciences
9.6 Future Perspectives
Appendix
References
10. Lacustrine Diatoms as Paleoclimate Proxies and Their Use in Climate Change ResearchGabriela S. Hassan
10.1 Introduction
10.2 Lacustrine Diatoms as Archives of Climatic Signals
10.3 Diatoms, Limnology and Climate
10.3.1 Numerical Methods
10.3.2 Salinity and Conductivity
10.3.3 Water-Level Fluctuations
10.3.4 Temperature
10.3.5 pH
10.3.6 Nutrients
10.3.7 Ice Cover
10.4 Conclusions
Acknowledgments
References
11. Diatoms in Temporary Rivers: Importance in a Global Climate Change ContextMaria Helena Novais and Manuela Morais
11.1 Introduction
11.2 Diatoms Adaptation Mechanisms in Temporary Rivers
11.3 Flow Reduction/Lentification
11.4 Desiccation Stress
11.5 Thermal Stress
11.6 UV Radiation Exposure
11.7 Community Dynamics in Temporary Rivers
11.8 Diatoms as Bioindicators in Temporary Rivers
11.9 Final Remarks
References
12. The Ecology of Diatoms in Peatlands: Communities from Tierra del Fuego Peat Bogs as a Study CaseValeria Casa, María V. Quiroga, Bart Van de Vijver and Gabriela Mataloni
12.1 Introduction
12.1.1 Wetlands and Peatlands: General Characteristics and Global Significance
12.1.2 Peatland Classification and Environmental Characterization
12.2 Singularity of Peatland Diatoms
12.2.1 Main Genera and Species in Peatlands
12.2.2 Physical, Chemical and Landscape-Scale Drivers of Diatom Communities
12.3 Diatoms in Tierra del Fuego Peat Bogs
12.3.1 Prior Knowledge
12.3.2 Study Area, Sampling and Statistical Analysis
12.3.3 Changes in Diatom Composition Between Peat Bogs and Their Surrounding Environments
12.3.4 Diatom Communities Inside the Peat Bogs
12.4 Closing Remarks and Future Perspectives
References
IndexBack to Top