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Leaf litter identity rather than diversity shapes microbial functions and microarthropod abundance in tropical montane rainforests.

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Title: Leaf litter identity rather than diversity shapes microbial functions and microarthropod abundance in tropical montane rainforests.
Authors: Sánchez‐Galindo, Laura M.1 (AUTHOR) lsanche@uni-goettingen.de, Sandmann, Dorothee1 (AUTHOR), Marian, Franca1 (AUTHOR), Krashevska, Valentyna1 (AUTHOR), Maraun, Mark1 (AUTHOR), Scheu, Stefan1,2 (AUTHOR)
Source: Ecology & Evolution (20457758). Mar2021, Vol. 11 Issue 5, p2360-2374. 15p.
Subject Terms: *Forest litter, *Rain forests, *Soil biology, *Microbial growth, Microbial diversity, Tropical forests, Gut microbiota
Abstract: In tropical forest ecosystems leaf litter from a large variety of species enters the decomposer system, however, the impact of leaf litter diversity on the abundance and activity of soil organisms during decomposition is little known. We investigated the effect of leaf litter diversity and identity on microbial functions and the abundance of microarthropods in Ecuadorian tropical montane rainforests. We used litterbags filled with leaves of six native tree species (Cecropia andina, Dictyocaryum lamarckianum, Myrcia pubescens, Cavendishia zamorensis, Graffenrieda emarginata, and Clusia spp.) and incubated monocultures and all possible two‐ and four‐species combinations in the field for 6 and 12 months. Mass loss, microbial biomass, basal respiration, metabolic quotient, and the slope of microbial growth after glucose addition, as well as the abundance of microarthropods (Acari and Collembola), were measured at both sampling dates. Leaf litter diversity significantly increased mass loss after 6 months of exposure, but reduced microbial biomass after 12 months of exposure. Leaf litter species identity significantly changed both microbial activity and microarthropod abundance with species of high quality (low C‐to‐N ratio), such as C. andina, improving resource quality as indicated by lower metabolic quotient and higher abundance of microarthropods. Nonetheless, species of low quality, such as Clusia spp., also increased the abundance of Oribatida suggesting that leaf litter chemical composition alone is insufficient to explain variation in the abundances of soil microarthropods. Overall, the results provide evidence that decomposition and microbial biomass in litter respond to leaf litter diversity as well as litter identity (chemical and physical characteristics), while microarthropods respond only to litter identity but not litter diversity. [ABSTRACT FROM AUTHOR]
Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Leaf litter identity rather than diversity shapes microbial functions and microarthropod abundance in tropical montane rainforests.
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  Data: <searchLink fieldCode="AR" term="%22Sánchez‐Galindo%2C+Laura+M%2E%22">Sánchez‐Galindo, Laura M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lsanche@uni-goettingen.de</i><br /><searchLink fieldCode="AR" term="%22Sandmann%2C+Dorothee%22">Sandmann, Dorothee</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Marian%2C+Franca%22">Marian, Franca</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Krashevska%2C+Valentyna%22">Krashevska, Valentyna</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Maraun%2C+Mark%22">Maraun, Mark</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Scheu%2C+Stefan%22">Scheu, Stefan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Ecology+%26+Evolution+%2820457758%29%22">Ecology & Evolution (20457758)</searchLink>. Mar2021, Vol. 11 Issue 5, p2360-2374. 15p.
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  Data: *<searchLink fieldCode="DE" term="%22Forest+litter%22">Forest litter</searchLink><br />*<searchLink fieldCode="DE" term="%22Rain+forests%22">Rain forests</searchLink><br />*<searchLink fieldCode="DE" term="%22Soil+biology%22">Soil biology</searchLink><br />*<searchLink fieldCode="DE" term="%22Microbial+growth%22">Microbial growth</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+diversity%22">Microbial diversity</searchLink><br /><searchLink fieldCode="DE" term="%22Tropical+forests%22">Tropical forests</searchLink><br /><searchLink fieldCode="DE" term="%22Gut+microbiota%22">Gut microbiota</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In tropical forest ecosystems leaf litter from a large variety of species enters the decomposer system, however, the impact of leaf litter diversity on the abundance and activity of soil organisms during decomposition is little known. We investigated the effect of leaf litter diversity and identity on microbial functions and the abundance of microarthropods in Ecuadorian tropical montane rainforests. We used litterbags filled with leaves of six native tree species (Cecropia andina, Dictyocaryum lamarckianum, Myrcia pubescens, Cavendishia zamorensis, Graffenrieda emarginata, and Clusia spp.) and incubated monocultures and all possible two‐ and four‐species combinations in the field for 6 and 12 months. Mass loss, microbial biomass, basal respiration, metabolic quotient, and the slope of microbial growth after glucose addition, as well as the abundance of microarthropods (Acari and Collembola), were measured at both sampling dates. Leaf litter diversity significantly increased mass loss after 6 months of exposure, but reduced microbial biomass after 12 months of exposure. Leaf litter species identity significantly changed both microbial activity and microarthropod abundance with species of high quality (low C‐to‐N ratio), such as C. andina, improving resource quality as indicated by lower metabolic quotient and higher abundance of microarthropods. Nonetheless, species of low quality, such as Clusia spp., also increased the abundance of Oribatida suggesting that leaf litter chemical composition alone is insufficient to explain variation in the abundances of soil microarthropods. Overall, the results provide evidence that decomposition and microbial biomass in litter respond to leaf litter diversity as well as litter identity (chemical and physical characteristics), while microarthropods respond only to litter identity but not litter diversity. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/ece3.7208
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        Text: English
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      – SubjectFull: Forest litter
        Type: general
      – SubjectFull: Rain forests
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      – SubjectFull: Soil biology
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      – SubjectFull: Microbial growth
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      – SubjectFull: Microbial diversity
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      – SubjectFull: Tropical forests
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      – SubjectFull: Gut microbiota
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    Titles:
      – TitleFull: Leaf litter identity rather than diversity shapes microbial functions and microarthropod abundance in tropical montane rainforests.
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              M: 03
              Text: Mar2021
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              Y: 2021
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              Value: 11
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