Marine Macrophyte Detritus and Degradation: the Role of Intraspecific Genetic Variation

Marine Macrophyte Detritus and Degradation: the Role of Intraspecific Genetic Variation Intraspecific genetic diversity influences the primary production and biomass of coastal marine foundation plants. The majority of their primary production ends up as detritus, yet the relationship between their intraspecific genetic diversity and detritus-based functions has rarely been considered. We addressed the relationship between these functions (detritus standing stock, degradation, sediment ammonium production) and genotypic diversity (richness, evenness, relatedness) in eelgrass (Zostera marina L.), a widely distributed coastal foundation plant, grown in the field at different levels of genotypic richness and relatedness. The functions were largely insensitive to the genotypic diversity, density, and biomass of the living plants in a plot, which suggests that changes in eelgrass genotypic diversity have minimal effects on these important functions and their consequences ranging from trophic support to carbon sequestration. Instead, detritus-based functions are perhaps more related to the sediment environment, the genotypic composition of the detritus itself, and macro- and microscopic detritus consumers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Estuaries and Coasts Springer Journals

Marine Macrophyte Detritus and Degradation: the Role of Intraspecific Genetic Variation

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Publisher
Springer US
Copyright
Copyright © 2017 by Coastal and Estuarine Research Federation
Subject
Environment; Environment, general; Ecology; Freshwater & Marine Ecology; Environmental Management; Coastal Sciences; Water and Health
ISSN
1559-2723
eISSN
1559-2731
D.O.I.
10.1007/s12237-017-0360-9
Publisher site
See Article on Publisher Site

Abstract

Intraspecific genetic diversity influences the primary production and biomass of coastal marine foundation plants. The majority of their primary production ends up as detritus, yet the relationship between their intraspecific genetic diversity and detritus-based functions has rarely been considered. We addressed the relationship between these functions (detritus standing stock, degradation, sediment ammonium production) and genotypic diversity (richness, evenness, relatedness) in eelgrass (Zostera marina L.), a widely distributed coastal foundation plant, grown in the field at different levels of genotypic richness and relatedness. The functions were largely insensitive to the genotypic diversity, density, and biomass of the living plants in a plot, which suggests that changes in eelgrass genotypic diversity have minimal effects on these important functions and their consequences ranging from trophic support to carbon sequestration. Instead, detritus-based functions are perhaps more related to the sediment environment, the genotypic composition of the detritus itself, and macro- and microscopic detritus consumers.

Journal

Estuaries and CoastsSpringer Journals

Published: Dec 20, 2017

References

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