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  • 1
    Keywords: Biotic communities. ; Microbial ecology. ; Freshwater ecology. ; Marine ecology. ; Biogeography. ; Biodiversity. ; Biology Technique. ; Ecosystems. ; Microbial Ecology. ; Freshwater and Marine Ecology. ; Biogeosciences. ; Biodiversity. ; Biological Techniques.
    Description / Table of Contents: Part 1. Litter dynamics: chapter 1. Litter Input (Arturo Elosegi & Jesús Pozo) -- Chapter 2. Leaf Retention (Arturo Elosegi) -- chapter 3. Manipulating Litter Retention in Streams (Michael Dobson) -- chapter 4. Coarse Benthic Organic Matter (Jesús Pozo & Arturo Elosegi) -- chapter5. Leaching (Felix Bärlocher) -- Chapter 6. Leaf Mass Loss Estimated by the Litter-Bag Technique (Felix Bärlocher) -- Chapter7. Determining Litter Mass Loss by the Plant Tagging Approach (Kevin A. Kuehn & Mark O. Gessner) -- Chapter 8. Wood Decomposition (Arturo Elosegi, Maite Arroita & Libe Solagaistua) -- Chapter9. Decomposition of Fine Particulate Organic Matter (Yoshimura Chihiro) -- Chapter10. Coarse Particulate Organic Matter Budgets (Jesús Pozo & Jon Molinero) -- Part 2. Chemical and Physical Leaf Properties. Chapter11. Total Phosphorus, Nitrogen, and Carbon in Leaf Litter (Mogens R. Flindt, Ana I. Lillebø, Javier Pérez & Verónica Ferreira) -- Chapter12. Total Protein (Mark O. Baerlocher) -- Chapter13. Free Amino Acids (Shawn D. Mansfield & Mark O. Baerlocher) -- chapter14. Determination of Total Carbohydrates (Shawn D. Mansfield) -- chapter15. Determination of Soluble Carbohydrates (Letitia da Ros, Faride Unda, Shawn D. Mansfield) -- Chapter16. Total Lipids (Mark O. Gessner & Paul T. M. Neumann) -- Chapter17. Polyunsaturated Fatty Acids in Decomposing Leaf Litter (Eric Von Elert) -- Chapter18. Total Phenolics (Felix Bärlocher & Manuel A.S. Graça) -- Chapter19. Radial Diffusion Assay for Tannins (Manuel A.S. Graça & Felix Bärlocher) -- Chapter20. Acid Butanol Assay to Determine Bulk Concentrations of Condensed Tannins (Mark O. Gessner & Daniel Steiner) -- Chapter21. Lignin and Cellulose (Mark O. Gessner) -- Chapter22. Physical Litter Properties: Leaf Toughness and Tensile Strength (Manuel A.S. Graça & Martin Zimmer) -- Part 3. Microbial Decomposers. Chapter23. Techniques for Handling Ingoldian Fungi (Enrique Descals) -- Chapter24. Maintenance of Aquatic Hyphomycete Cultures (Ludmila Marvanová) -- Chapter 25. An Illustrated Key to the Common Temperate Species of Aquatic Hyphomycetes (Vladislav Gulis, Ludmila Marvanová & Enrique Descals) -- Chapter26. Sporulation by Aquatic Hyphomycetes (Felix Bärlocher) -- Chapter 27. Ergosterol as a Measure of Fungal Biomass (Mark O. Gessner) -- Chapter 28. Fungal Growth Rates and Production (Keller Suberkropp, Mark O. Gessner & Kevin A. Kuehn) -- Chapter 29. Bacterial Abundance and Biomass Determination in Plant Litter by Epifluorescence Microscopy (Nanna Buesing & Mark O. Gessner) -- Chapter 30. Growth and Production of Litter-Associated Bacteria (Nanna Buesing, Mark O. Gessner & Kevin A. Kuehn) -- Chapter 31. Isolation of Cellulose-Degrading Bacteria (Jürgen Marxsen) -- Chapter 32. ATP as a Measure of Microbial Biomass (Manuela Abelho) -- Chapter 33. Respiration of Litter-Associated Microbes and Invertebrates (Manuel A.S. Graça & Manuela Abelho) -- Part 4. Molecular Microbial Community Analyses. Chapter34. Terminal Restriction Fragment Length Polymorphism (T-Rflp) to Estimate Fungal Diversity (Liliya G. Nikolcheva & Felix Bärlocher) -- Chapter 35. Denaturing Gradient Gel Electrophoresis (DGGE) to Estimate Fungal Diversity (Liliya G. Nikolcheva & Felix Bärlocher) -- Chapter36. Quantitative Real-Time PCR (qPCR) to Estimate Molecular Fungal Abundance (Christiane Baschien & J. Steffen C. Carl) -- Chapter 37. Metabarcoding of Litter-associated Fungi and Bacteria (Sofia Duarte, Christian Wurzbacher & Sahadevan Seena) -- Chapter 38. Identifying Active Members of Litter Fungal Communities by Precursor rRNA (Martina Štursová & Petr Baldrian) -- Chapter 39. Gene Expression Analysis of Litter-Associated Fungi Using RNA-Seq (Elizabeth C. Bourne, Paul R. Johnston, Elisabeth Funk & Michael T. Monaghan) -- Chapter 40. Metaproteomics of Litter-associated Fungi (Katharina M. Keiblinger & Katharina Riedel) -- Part 5. Enzymatic Capabilities. Chapter 41. Extractellular Fungal Hydrolytic Enzyme Activity (Shawn D. Mansfield) -- chapter 42. Cellulases (Martin Zimmer) -- Chapter 43. Viscosimetric Determination of Endocellulase Activity (Björn Hendel & Jürgen Marxsen) -- Chapter 44. Fluorometric Determination of The Activity of β-Glucosidase and other Extracellular Hydrolytic Enzymes (Björn Hendel & Jürgen Marxsen) -- Chapter 45. Pectin-degrading Enzymes: Polygalacturonase and Pectin Lyase (Keller Suberkropp) -- chapter 46. Lignin-degrading Enzymes: Phenoloxidase and Peroxidase (Björn Hendel, Robert L. Sinsabaugh & Jürgen Marxsen) -- Chapter 47. Phenol Oxidation (Martin Zimmer) -- Chapter 48. Proteinase Activity: Azocoll and Thin-layer Enzyme Assay (Manuel A.S. Graça & Felix Bärlocher) -- Part 6. Litter Consumers. Chapter 49. Processing of Aquatic Invertebrates Colonizing Decomposing Litter (John S. Richardson) -- chapter 50. Identifying Stream Invertebrates as Plant Litter Consumers (Luz Boyero, Richard G. Pearson, Ricardo J. Albariño, Marcos Callisto, Francisco Correa-Araneda, Andrea C. Encalada, Marcelo Moretti, Alonso Ramírez, April Sparkman, Christopher M. Swan, Catherine M. Yule & Manuel A.S. Graça) -- chapter 51. Shredder Feeding and Growth Rates (Manuel A.S. Graça & José M. González) -- chapter 52. Feeding Preferences (Cristina Canhoto, Manuel A.S. Graça & Felix Bärlocher) -- chapter 53. Energy Budget of Shredders (Manuel A.S. Graça) -- chapter 54. The Role of Shredders in Litter Dynamics at Stream Scale (José M. González & Manuel A.S. Graça) -- Part 7. Litter Manipulations. Chapter 55. Manipulation of Leaf Litter Stoichiometry (Julio Arce-Funck, Vincent Felten, Michael Danger) -- Chapter 56. Isotopic Labelling of Leaf-litter Nitrogen (Bernd Zeller, Severine Bienaimé & Etienne Dambrine) -- Chapter 57. Decomposition and Consumption Tablets (DECOTABSs) (Gea H. van Der Lee, Ellard R. Hunting, J. Arie Vonk & Michiel H.S. Kraak) -- chapter 58. Inoculation of Leaf Litter with Aquatic Hyphomycetes (Eric Chauvet) -- Part 8. Data Analyses. Chapter 59. A Primer for Statistical Analysis (Felix Bärlocher) -- Chapter 60. Determining Temperature-normalized Decomposition Rates (Mark O. Gessner & Frank Peeters) -- Chapter 61. Biodiversity Analysis (Felix Bärlocher) -- Chapter 62. A Bioinformatics Primer for the Analysis of Illumina MiSeq Data of Litter-associated Fungi and Bacteria (Sahadevan Seena, Sofia Duarte & Christian Wurzbacher) -- Chapter 63. A Primer for Meta-Analysis (Verónica Ferreira & Felix Bärlocher).
    Abstract: This edited volume is an extensive collection of methods for investigating plant litter dynamics in ecosystems. Particular emphasis is placed on litter decomposition in streams and rivers. The presented methods range from analyses of chemical and physical litter properties to the taxonomic and functional characterization of microbial decomposers, both fungi and bacteria, assessments of litter-consuming invertebrates, and procedures to determine litter dynamics at the stream ecosystem level. Several chapters addressing general topics of data analysis are also included. This second edition of the book has been greatly expanded. Its now 63 chapters cover both well-established and recently elaborated techniques, some of which have not yet been applied to decomposing litter in streams. Modern molecular techniques ranging from next-generation sequencing to proteomics receive special attention among the 20 chapters that are entirely new. Numerous methods on characterizing litter consumers have also been added to fill an evident gap of the first edition. However, the basic original concept and all of the previous chapters have been retained, although most of them have been thoroughly updated. Typical contributions provide step-by-step protocols that are preceded by brief reviews of the ecological significance and the principles underlying the method. Where available, short compilations of published data have been added in overview tables to provide background information on the range of results to expect. Useful hints, a discussion of potential weaknesses, and key references are provided at the end. Hands-on material useful to implement several of the presented methods (e.g. computer code, calculation sheets) is available online. The book is written for students embarking on studies of plant litter dynamics and for established researchers wishing to expand the scope of their methodological toolbox to study litter decomposition and the microbial decomposers and invertebrates involved in the process. The primary intended audience is aquatic ecologists, since many of the methods presented in the book focus on streams and stream organisms. However, the great majority of the protocols can be easily adapted or even directly applied to coastal and terrestrial ecosystems. Consequently, they should be of equal interest to scientists investigating plant litter dynamics in habitats such as mangroves and salt-marshes, terrestrial grasslands and forests.
    Type of Medium: Online Resource
    Pages: XXV, 604 p. 89 illus., 37 illus. in color. , online resource.
    Edition: 2nd ed. 2020.
    ISBN: 9783030305154
    DDC: 577
    Language: English
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  • 2
    Publication Date: 2024-03-08
    Description: We simulated an experimental summer storm in large-volume (~1200 m3, ~16m depth) enclosures in Lake Stechlin (https://www.lake-lab.de) by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Primary production rates as well as exoenzyme activities (alkaline phosphatase, beta-glucosidase, leucine aminopeptidase) were monitored for 42 days after the experimental disturbance event by incubation of size-fractionated sample with H14CO3- and MUF substrate analogue assays, respectively. Mixing disrupted the thermal stratification, increased concentrations of dissolved nutrients and CO2 and changed light conditions in the epilimnion. Thus, mixing stimulated phytoplankton production, resulting in higher primary production rates within one week after mixing.
    Keywords: BIBS; Bridging in Biodiversity Science; Climate change; Climate driven Changes in Biodiversity of Microbiota; cyanobacteria; DATE/TIME; Day of experiment; deep chlorophyll maximum (DCM); DEPTH, water; Description; disturbance; enclosure experiment; Enclosure experiment; Germany; Incubation of size-fractionated sample with H14CO3-; Kinetic constants-maximum enzyme velocity of alkaline phosphatase exoenzyme activity; Kinetic constants-maximum enzyme velocity of alkaline phosphatase potential exoenzyme activity; Kinetic constants-maximum enzyme velocity of leucine aminopeptidase potential exoenzyme activity; lake; Lake_Stechlin; Mesocosm label; mesocosm study; Michealis-Menten constant of alkaline phosphatase potential exoenzyme activity; Michealis-Menten constant of beta-glucosidase potential exoenzyme activity; Michealis-Menten constant of leucine aminopeptidase potential exoenzyme activity; MUF substrate analogue assay; NITROLIMIT; Oxygen/Nitrogen ratio; primary production; Primary production of carbon; Sample incubation with H14CO3-; Stickstofflimitation in Binnengewässern; TemBi; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 2903 data points
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  • 3
    Publication Date: 2024-03-08
    Description: We simulated an experimental summer storm in large-volume (~1200 m3, ~16m depth) enclosures in Lake Stechlin (https://www.lake-lab.de) by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Size-fractionated (0.2-3 µm and 〉3.0 µm) chlorophyll a (Chla) development was monitored for 42 days after the experimental disturbance event. Mixing disrupted the thermal stratification, increased concentrations of dissolved nutrients and CO2 and changed light conditions in the epilimnion. Thereby, mixing increased the concentration of Chla of the small size fraction 0.2-3.0 within one week after mixing. After 2-3 weeks, mixing resulted in increased concentrations of Chla also in the large size fraction, which was associated to a bloom of Dolichospermums sp.
    Keywords: Acetone extraction from polycarbonate filters; fluorescence spectrophotometer (Hitachi F-7000, Tokyo, Japan); BIBS; Bridging in Biodiversity Science; chlorophyll; Chlorophyll a; Climate change; Climate driven Changes in Biodiversity of Microbiota; DATE/TIME; Day of experiment; DEPTH, water; Description; disturbance; Enclosure experiment; Germany; Lake_Stechlin; Mesocosm label; NITROLIMIT; Oxygen/Nitrogen ratio; Stickstofflimitation in Binnengewässern; TemBi; Treatment
    Type: Dataset
    Format: text/tab-separated-values, 2160 data points
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  • 4
    Publication Date: 2024-03-22
    Description: We simulated an experimental summer storm in large-volume (~1200 m3, ~16m depth) enclosures in Lake Stechlin by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Water physical variables and water chemistry was monitored for 42 days after the experimental disturbance event. Mixing disrupted the thermal stratification, increasing concentrations of dissolved nutrients and CO2 and changing light conditions in the epilimnion. Mixing, thus, stimulated phytoplankton growth, resulting in higher particulate matter concentrations of carbon, nitrogen and phosphorous.
    Keywords: Alkalinity, total; Ammonium; Ammonium molybdate reaction (FIASTAR 5000), (0.3 µm GF-75 prefiltered (Sterlitech)); BIBS; Bicarbonate ion; Bridging in Biodiversity Science; Calcium; Calcium carbonate; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, particulate; Carbon, organic, dissolved; Carbon, organic, particulate; Carbon, total, particulate; Carbonate ion; Carbon dioxide; Carbon dioxide, partial pressure; Chloride; Climate change; Climate driven Changes in Biodiversity of Microbiota; Conductivity, electrolytic; cyanobacteria; DATE/TIME; Day of experiment; DCM; DEPTH, water; Depth of Secchi Disk; Description; Difference derived from TPC and PIC; disturbance; ELTRA-800 (0.3 µm GF-75 filters (Sterlitech)); enclosure; Enclosure experiment; Flow-injection analyzer; Flow-injection analyzer (0.3 µm GF-75 prefiltered (Sterlitech)); Fugacity of carbon dioxide in seawater; Germany; High temperature combustion, infra-red detection (Shimadzu), (0.3 µm GF-75 prefiltered (Sterlitech)); Infralyt 50 (SAXON Junkalor GmbH), (0.3 µm GF-75 filters (Sterlitech)); Ion chromatography (Dionex), (0.3 µm GF-75 prefiltered (Sterlitech)); lake; Lake_Stechlin; Magnesium; mesocosm; Mesocosm label; Nitrate; Nitrite; Nitrogen, total; Nitrogen, total, particulate; Nitrogen, total dissolved; NITROLIMIT; Oxygen; Oxygen/Nitrogen ratio; Oxygen saturation; Oxygen sensor, YSI6560; PAR sensor Li-193SA, LI-COR Inc.; Peroxodisulfate oxidation method; Flow-injection analyzer; 0.3 µm GF-75 filters (Sterlitech); pH; Phosphorus, reactive soluble; Phosphorus, total; Phosphorus, total, particulate; Potassium; Pressure, technical; Radiation, photosynthetically active; SD; Secchi disk; Silicate, dissolved; Sodium; Stickstofflimitation in Binnengewässern; Sulfate; summer storm; TemBi; Temperature, air; Temperature, water; Titration; Treatment; Vaisala Weather station WXT520; water chemistry; water physics
    Type: Dataset
    Format: text/tab-separated-values, 10528 data points
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  • 5
    Publication Date: 2024-04-20
    Description: During the summer of 2015, we reproduced three levels of browning and seven levels of nutrients using water from lake Stechlin (North-East Germany). We applied ultra-high-resolution mass-spectrometry and dissolved organic matter optical properties to retrieve the composition of the DOM at different levels of resolutions. Using a network analysis approach, we found that molecular formulas clustering together share a common origin.
    Keywords: Brownification; DOM; Enclosure experiment; FT-ICR-MS; Germany; Lake_Stechlin; nutrients
    Type: Dataset
    Format: text/plain, 3.6 MBytes
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 26 (1991), S. 0 
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. 1. Although the bulk of litter input to stream ecosystems is in the form of fresh leaves, current understanding of organic matter processing is largely founded on experimental studies made with pre-dried leaves. This paradox points to the critical need for evaluating to what extent those experiments with dried leaves reflect natural litter decomposition.2. The mass loss rates, patterns of mass loss, and chemical changes during processing of fresh leaf litter were compared with air-dried leaf litter in a stream ecosystem.3. Although overall mass loss rates were similar between treatments (k= 0.0213 day−1 and 0.0206 day−1), fresh leaves lost mass at a constant rate, whereas the decay of dried leaves proceeded in two distinct phases. Soluble organic carbon, phosphorus, and potassium were rapidly leached from dried litter, but were largely retained in fresh material for more than a week. Kinetics of concentrations of cellulose and changes in amounts of lignin remaining per leaf pack revealed further differences in decomposition dynamics between treatments, apparently related, either directly or indirectly, to differences in leaching behaviour.4. Dynamics of nitrogen and protein contents were similar between treatments, indicating that microbial colonization was not greatly delayed on fresh leaves.5. It is concluded that the retention of labile carbon and nutrients in fresh leaf litter facilitates their utilization by leaf-associated micro-organisms and invertebrates, resulting in an increased importance of biotic processes relative to physical processes such as leaching.6. At the ecosystem level, retention of carbon and nutrients in streams would be increased, allowing greater overall productivity. Conversely, the availability of labile organic carbon would be reduced in compartments such as the epilithon, fine sediments, and the water column.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Freshwater biology 40 (1998), S. 0 
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 1. The relationship between macroinvertebrate assemblages and the breakdown of alder [Alnus viridis (Chaix), Dc.] leaves was examined by exposing leaf packs in four streams in an alpine glacial floodplain over 8 months. Although glacially fed, the four sites (pro-glacial, glacial lake outlet, main channel, and a side-channel with a mix of water sources) differed physically and contained different benthic communities.2. Leaf breakdown and associated fungal properties differed widely among sites. Leaf decay rate varied by an order of magnitude (k ranged from 0.0029 to 0.0305 day–1), and was fastest at the lake outlet (〈 20% leaf mass remaining by day 45) and slowest at the pro-glacial site (〉 75% remaining on day 45). Rapid processing at the lake outlet was because of the presence of Acrophylax zerberus Brauer, a shredding caddisfly.3. There were few macroinvertebrate taxa at the pro-glacial site (two to four taxa present in packs) and leaf breakdown was attributed primarily to micro-organisms. Leuctra abundance in leaf packs was strongly correlated with fungal biomass but not with the sporulation activity of any specific aquatic hyphomycete. Other taxa, such as Baetis and chironomids, showed no relationship with any leaf characteristic, suggesting that leaf packs were used mainly as a habitat and not as a food resource.4. The predatory stonefly Isoperla was significantly associated with the abundance of macroinvertebrate prey (Baetis, Chironomidae and Leuctra) in leaf packs at the main and side-channel sites. The results indicate that leaf breakdown can vary widely in alpine lotic environments, reflecting site-specific differences in habitat characteristics, and in macroinvertebrate and fungal composition.
    Type of Medium: Electronic Resource
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  • 8
    Publication Date: 2018-02-26
    Description: Traces of life are nearly ubiquitous on Earth. However, a central unresolved question is whether these traces always indicate an active microbial community or whether, in extreme environments, such as hyperarid deserts, they instead reflect just dormant or dead cells. Although microbial biomass and diversity decrease with increasing aridity in the Atacama Desert, we provide multiple lines of evidence for the presence of an at times metabolically active, microbial community in one of the driest places on Earth. We base this observation on four major lines of evidence: (i) a physico-chemical characterization of the soil habitability after an exceptional rain event, (ii) identified biomolecules indicative of potentially active cells [e.g., presence of ATP, phospholipid fatty acids (PLFAs), metabolites, and enzymatic activity], (iii) measurements of in situ replication rates of genomes of uncultivated bacteria reconstructed from selected samples, and (iv) microbial community patterns specific to soil parameters and depths. We infer that the microbial populations have undergone selection and adaptation in response to their specific soil microenvironment and in particular to the degree of aridity. Collectively, our results highlight that even the hyperarid Atacama Desert can provide a habitable environment for microorganisms that allows them to become metabolically active following an episodic increase in moisture and that once it decreases, so does the activity of the microbiota. These results have implications for the prospect of life on other planets such as Mars, which has transitioned from an earlier wetter environment to today’s extreme hyperaridity.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 9
    Publication Date: 2008-06-23
    Print ISSN: 1015-1621
    Electronic ISSN: 1420-9055
    Topics: Biology
    Published by Springer
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  • 10
    Publication Date: 2011-12-16
    Print ISSN: 0018-8158
    Electronic ISSN: 1573-5117
    Topics: Biology
    Published by Springer
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