Testing a 'genes-to-ecosystems' approach to understanding aquatic-terrestrial linkages
| Autor: | Julian Heavyside, Armando Geraldes, Andrew M. MacDonald, Seth M. Rudman, Mariano A. Rodriguez-Cabal, Carri J. LeRoy, Rana W. El-Sabaawi, Gregory M. Crutsinger, Athena D. McKown, Takuya Sato, Edmund Hart |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
DECOMPOSITION
Aquatic Organisms Genotype Biology Intraspecific competition Ciencias Biológicas Genetic variation Genetics Ecosystem Ecology Evolution Behavior and Systematics Genetic Association Studies Riparian zone geography COMMUNITY GENETICS geography.geographical_feature_category Ecology Genetic Variation Plant litter Heritability Ecología Biota Genetic architecture Plant Leaves Phenotype Populus AQUATIC-TERRESTRIAL LINKAGES Phytoplankton Litter Hydrobiology GENES-TO-ECOSYSTEMS CIENCIAS NATURALES Y EXACTAS |
| Popis: | A ‘genes-to-ecosystems’ approach has been proposed as a novel avenue for integrating the consequences of intraspecific genetic variation with the underlying genetic architecture of a species to shed light on the relationships among hierarchies of ecological organization (genes → individuals → communities → ecosystems). However, attempts to identify genes with major effect on the structure of communities and/or ecosystem processes have been limited and a comprehensive test of this approach has yet to emerge. Here, we present an interdisciplinary field study that integrated a common garden containing different genotypes of a dominant, riparian tree, Populus trichocarpa, and aquatic mesocosms to determine how intraspecific variation in leaf litter alters both terrestrial and aquatic communities and ecosystem functioning. Moreover, we incorporate data from extensive trait screening and genome-wide association studies estimating the heritability and genes associated with litter characteristics. We found that tree genotypes varied considerably in the quality and production of leaf litter, which contributed to variation in phytoplankton abundances, as well as nutrient dynamics and light availability in aquatic mesocosms. These ‘after-life’ effects of litter from different genotypes were comparable to the responses of terrestrial communities associated with the living foliage. We found that multiple litter traits corresponding with aquatic community and ecosystem responses differed in their heritability. Moreover, the underlying genetic architecture of these traits was complex, and many genes contributed only a small proportion to phenotypic variation. Our results provide further evidence that genetic variation is a key component of aquatic–terrestrial linkages, but challenge the ability to predict community or ecosystem responses based on the actions of one or a few genes. Fil: Crutsinger, Gregory M.. University Of British Columbia; Canadá Fil: Rudman, Seth M.. University Of British Columbia; Canadá Fil: Rodriguez Cabal, Mariano Alberto. University Of British Columbia; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación en Biodiversidad y Medioambiente; Argentina Fil: Mckown, Athena D.. University Of British Columbia; Canadá Fil: Sato, Takuya. Kobe University; Fil: Macdonald, Andrew M.. University Of British Columbia; Canadá Fil: Heavyside, Julian. University Of British Columbia; Canadá Fil: Geraldes, Arnaldo. University Of British Columbia; Canadá Fil: Hart, Edmund M.. University Of British Columbia; Canadá Fil: Leroy, Carri J.. Evergreen State College; Canadá Fil: El-Sabaawi, Rana W.. University Of Victoria; Canadá |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|