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  1. Article: Functional importance and diversity of fungi during standing grass litter decomposition

    Lodato, Matthew B / Boyette, Jerrid S / Smilo, Rachel A / Jackson, Colin R / Halvorson, Halvor M / Kuehn, Kevin A

    Oecologia. 2021 Feb., v. 195, no. 2

    2021  

    Abstract: Although microbial participation in litter decomposition is widely known within terrestrial soils, the role and significance of microorganisms during the aerial standing litter phase of decomposition remains poorly investigated. We examined the fungi ... ...

    Abstract Although microbial participation in litter decomposition is widely known within terrestrial soils, the role and significance of microorganisms during the aerial standing litter phase of decomposition remains poorly investigated. We examined the fungi inhabiting standing leaf litter of Schizachyrium scoparium and Schizachyrium tenerum in a Longleaf Pine savanna ecosystem and estimated their contribution to litter decomposition. We identified fungal phylotypes associated with leaf litter and quantified leaf C mass loss, fungal biomass production, and microbial respiration during decomposition. These data were used to construct budgets estimating C flow into and through fungi. Significant losses in S. scoparium (55%) and S. tenerum (67%) leaf C mass were observed during standing decomposition along with concomitant increases in fungal biomass, which reached a maximum of 36 and 33 mgC/g detrital C, respectively. Cumulative fungal production during decomposition totaled 99 ± 6 mgC/g initial detrital C in S. scoparium and 73 ± 5 mgC/g initial detrital C in S. tenerum, indicating that 18 and 11% of the litter C was converted into fungal biomass, respectively. Corresponding estimates of cumulative fungal respiration totaled 106 ± 7 and 174 ± 11 mgC/g initial detrital C in S. scoparium and S. tenerum, respectively. Next generation sequencing identified several fungal phylotypes, with the majority of sequences belonging to the Ascomycota (Dothideomycetes) and Basidiomycota (Agaricomycetes). Fungal phylotypes were similar between litter species and changed over time, showing a successional pattern. These findings extend our understanding of fungal processes to standing litter in terrestrial ecosystems, and highlight the quantitative importance of fungi in C cycling processes.
    Keywords Agaricomycetes ; Dothideomycetes ; Pinus palustris ; Schizachyrium scoparium ; biomass production ; fungal biomass ; fungi ; leaves ; phylotype ; plant litter ; savannas
    Language English
    Dates of publication 2021-02
    Size p. 499-512.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 123369-5
    ISSN 1432-1939 ; 0029-8549
    ISSN (online) 1432-1939
    ISSN 0029-8549
    DOI 10.1007/s00442-020-04838-y
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 70/109: Show issues

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  2. Article ; Online: Little clams with big potential: nutrient release by invasive Corbicula fluminea can exceed co-occurring freshwater mussel (Unionidae) assemblages

    Hopper, Garrett W. / Buchanan, Jonathan K. / Sánchez González, Irene / Kubala, Megan E. / Bucholz, Jamie R. / Lodato, Matthew B. / Lozier, Jeffrey D. / Atkinson, Carla L.

    Biol Invasions. 2022 Aug., v. 24, no. 8 p.2529-2545

    2022  

    Abstract: Animal-mediated nutrient cycling research tends to emphasize either native or invasive fauna, yet communities comprising both groups are common, and biogeochemical control may shift from native to invasive species, altering local nutrient regimes. In ... ...

    Abstract Animal-mediated nutrient cycling research tends to emphasize either native or invasive fauna, yet communities comprising both groups are common, and biogeochemical control may shift from native to invasive species, altering local nutrient regimes. In North American rivers, co-occurring native mussels (Unionidae) and the invasive clam, Corbicula fluminea, have strong nutrient cycling effects through filter-feeding and bioturbation. When these two groups co-occur, the degree to which their nutrient cycling effects differ remains unclear. We quantified bivalve density, biomass, and nutrient excretion rates at four reaches in each of two rivers once during the same year to test whether differences in density and biomass led to different spatial and temporal nutrient cycling and stoichiometry patterns for co-occurring mussels and Corbicula. We hypothesized high densities, coupled with small body size would elevate Corbicula population-level nutrient cycling rates above those of less dense assemblages of larger-bodied mussels. Corbicula occurred at all mussel beds and their densities generally exceeded mussel densities, but Corbicula biomass was consistently lower. High densities and greater mass-specific excretion rates led to Corbicula population-level excretion rates that were greater than or equal to mussel aggregate rates at half the reaches. Abiotic conditions limited bivalve nutrient supply relative to ambient concentrations, but their contributions increased during low flows and are likely concentrated at finer spatial scales. Our results suggest spatial variation in invasive and native trait distribution associated with phylogenetic tribes influences the potential for animal-mediated nutrient cycling to shift from native to invasive species control. Overall, our study highlights the need for new management paradigms that account for nutrient cycling by invasive species.
    Keywords Corbicula fluminea ; Unionidae ; biomass ; bioturbation ; body size ; clams ; excretion ; fauna ; freshwater mussels ; invasive species ; phylogeny ; stoichiometry
    Language English
    Dates of publication 2022-08
    Size p. 2529-2545.
    Publishing place Springer International Publishing
    Document type Article ; Online
    ZDB-ID 1438729-3
    ISSN 1573-1464 ; 1387-3547
    ISSN (online) 1573-1464
    ISSN 1387-3547
    DOI 10.1007/s10530-022-02792-9
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 7608: Show issues

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  3. Article ; Online: Functional importance and diversity of fungi during standing grass litter decomposition.

    Lodato, Matthew B / Boyette, Jerrid S / Smilo, Rachel A / Jackson, Colin R / Halvorson, Halvor M / Kuehn, Kevin A

    Oecologia

    2021  Volume 195, Issue 2, Page(s) 499–512

    Abstract: Although microbial participation in litter decomposition is widely known within terrestrial soils, the role and significance of microorganisms during the aerial standing litter phase of decomposition remains poorly investigated. We examined the fungi ... ...

    Abstract Although microbial participation in litter decomposition is widely known within terrestrial soils, the role and significance of microorganisms during the aerial standing litter phase of decomposition remains poorly investigated. We examined the fungi inhabiting standing leaf litter of Schizachyrium scoparium and Schizachyrium tenerum in a Longleaf Pine savanna ecosystem and estimated their contribution to litter decomposition. We identified fungal phylotypes associated with leaf litter and quantified leaf C mass loss, fungal biomass production, and microbial respiration during decomposition. These data were used to construct budgets estimating C flow into and through fungi. Significant losses in S. scoparium (55%) and S. tenerum (67%) leaf C mass were observed during standing decomposition along with concomitant increases in fungal biomass, which reached a maximum of 36 and 33 mgC/g detrital C, respectively. Cumulative fungal production during decomposition totaled 99 ± 6 mgC/g initial detrital C in S. scoparium and 73 ± 5 mgC/g initial detrital C in S. tenerum, indicating that 18 and 11% of the litter C was converted into fungal biomass, respectively. Corresponding estimates of cumulative fungal respiration totaled 106 ± 7 and 174 ± 11 mgC/g initial detrital C in S. scoparium and S. tenerum, respectively. Next generation sequencing identified several fungal phylotypes, with the majority of sequences belonging to the Ascomycota (Dothideomycetes) and Basidiomycota (Agaricomycetes). Fungal phylotypes were similar between litter species and changed over time, showing a successional pattern. These findings extend our understanding of fungal processes to standing litter in terrestrial ecosystems, and highlight the quantitative importance of fungi in C cycling processes.
    MeSH term(s) Biomass ; Ecosystem ; Fungi ; Plant Leaves ; Poaceae
    Language English
    Publishing date 2021-01-09
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 123369-5
    ISSN 1432-1939 ; 0029-8549
    ISSN (online) 1432-1939
    ISSN 0029-8549
    DOI 10.1007/s00442-020-04838-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

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    In stock of ZB MED Bonn / Germany

    Z 70/109: Show issues

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  4. Article ; Online: A trait dataset for freshwater mussels of the United States of America.

    Hopper, Garrett W / Bucholz, Jamie R / DuBose, Traci P / Fogelman, Kaelyn J / Keogh, Sean M / Kubala, Megan E / Lodato, Matthew B / Nichols, David H / Sánchez González, Irene / Pfeiffer, John M / Stoeckel, James A / Lozier, Jeffrey D / Atkinson, Carla L

    Scientific data

    2023  Volume 10, Issue 1, Page(s) 745

    Abstract: The United States of America has a diverse collection of freshwater mussels comprising 301 species distributed among 59 genera and two families (Margaritiferidae and Unionidae), each having a unique suite of traits. Mussels are among the most imperilled ... ...

    Abstract The United States of America has a diverse collection of freshwater mussels comprising 301 species distributed among 59 genera and two families (Margaritiferidae and Unionidae), each having a unique suite of traits. Mussels are among the most imperilled animals and are critical components of their ecosystems, and successful management, conservation and research requires a cohesive and widely accessible data source. Although trait-based analysis for mussels has increased, only a small proportion of traits reflecting mussel diversity in this region has been collated. Decentralized and non-standardized trait information impedes large-scale analysis. Assembling trait data in a synthetic dataset enables comparison across species and lineages and identification of data gaps. We collated data from the primary literature, books, state and federal reports, theses and dissertations, and museum collections into a centralized dataset covering information on taxonomy, morphology, reproductive ecology and life history, fish hosts, habitats, thermal tolerance, geographic distribution, available genetic information, and conservation status. By collating these traits, we aid researchers in assessing variation in mussel traits and modelling ecosystem change.
    MeSH term(s) Animals ; Bivalvia ; Ecosystem ; Fresh Water ; Phylogeny ; Unionidae/genetics ; United States
    Language English
    Publishing date 2023-10-27
    Publishing country England
    Document type Dataset ; Journal Article
    ZDB-ID 2775191-0
    ISSN 2052-4463 ; 2052-4463
    ISSN (online) 2052-4463
    ISSN 2052-4463
    DOI 10.1038/s41597-023-02635-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Periphytic algae decouple fungal activity from leaf litter decomposition via negative priming

    Halvorson, Halvor M / Barry, Jacob R / Lodato, Matthew B / Findlay, Robert H / Francoeur, Steven N / Kuehn, Kevin A

    Functional ecology. 2019 Jan., v. 33, no. 1

    2019  

    Abstract: Well‐documented in terrestrial settings, priming effects describe stimulated heterotrophic microbial activity and decomposition of recalcitrant carbon by additions of labile carbon. In aquatic settings, algae produce labile exudates which may elicit ... ...

    Abstract Well‐documented in terrestrial settings, priming effects describe stimulated heterotrophic microbial activity and decomposition of recalcitrant carbon by additions of labile carbon. In aquatic settings, algae produce labile exudates which may elicit priming during organic matter decomposition, yet the directions and mechanisms of aquatic priming effects remain poorly tested. We tested algal‐induced priming during decomposition of two leaf species of contrasting recalcitrance, Liriodendron tulipifera and Quercus nigra, in experimental streams under light or dark conditions. We measured litter‐associated algal, bacterial, and fungal biomass and activity, stoichiometry, and litter decomposition rates over 43 days. Light increased algal biomass and production rates, in turn increasing bacterial abundance 141%–733% and fungal production rates 20%–157%. Incubations with a photosynthesis inhibitor established that algal activity directly stimulated fungal production rates in the short term. Algal‐stimulated fungal production rates on both leaf species were not coupled to long‐term increases in fungal biomass accrual or litter decomposition rates, which were 154%–157% and 164%–455% greater in the dark, respectively. The similar patterns on fast‐ vs. slow‐decomposing L. tulipifera and Q. nigra, respectively, indicated that substrate recalcitrance may not mediate priming strength or direction. In this example of negative priming, periphytic algae decoupled fungal activity from decomposition, likely by providing labile carbon invested towards greater fungal growth and reproduction instead of recalcitrant carbon degradation. If common, algal‐induced negative priming could stimulate heterotrophy reliant on labile carbon yet suppress decomposition of recalcitrant carbon, modifying energy and nutrients available to upper trophic levels and enhancing organic carbon storage or export in well‐lit aquatic habitats. plain language summary is available for this article.
    Keywords Liriodendron tulipifera ; Quercus nigra ; algae ; aquatic habitat ; biodegradation ; carbon sequestration ; energy ; exports ; fungal biomass ; fungal growth ; fungi ; labile carbon ; leaves ; photosynthesis ; plant litter ; reproduction ; stoichiometry ; streams ; trophic levels
    Language English
    Dates of publication 2019-01
    Size p. 188-201.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 2020307-X
    ISSN 1365-2435 ; 0269-8463
    ISSN (online) 1365-2435
    ISSN 0269-8463
    DOI 10.1111/1365-2435.13235
    Database NAL-Catalogue (AGRICOLA)

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  6. Article: Periphytic algae decouple fungal activity from leaf litter decomposition via negative priming.

    Halvorson, Halvor M / Barry, Jacob R / Lodato, Matthew B / Findlay, Robert H / Francoeur, Steven N / Kuehn, Kevin A

    Functional ecology

    2018  Volume 33, Issue 1, Page(s) 188–201

    Abstract: 1. Well-documented in terrestrial settings, priming effects describe stimulated heterotrophic microbial activity and decomposition of recalcitrant carbon by additions of labile carbon. In aquatic settings, algae produce labile exudates which may elicit ... ...

    Abstract 1. Well-documented in terrestrial settings, priming effects describe stimulated heterotrophic microbial activity and decomposition of recalcitrant carbon by additions of labile carbon. In aquatic settings, algae produce labile exudates which may elicit priming during organic matter decomposition, yet the directions and mechanisms of aquatic priming effects remain poorly tested. 2. We tested algal-induced priming during decomposition of two leaf species of contrasting recalcitrance,
    Language English
    Publishing date 2018-11-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 2020307-X
    ISSN 1365-2435 ; 0269-8463
    ISSN (online) 1365-2435
    ISSN 0269-8463
    DOI 10.1111/1365-2435.13235
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

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    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

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