Alteration of earthworm community biomass by the alien Myrica faya in Hawai'i

Oecologia ◽  
1990 ◽  
Vol 82 (3) ◽  
pp. 414-416 ◽  
Author(s):  
G. H. Aplet
Keyword(s):  
Community Biomass ◽  
Myrica Faya

Dominance determines fish community biomass in a temperate seagrass ecosystem

2019 ◽  
Author(s):  
Aaron Matthius Eger ◽  
Rebecca J. Best ◽  
Julia Kathleen Baum
Keyword(s):  
Species Richness ◽  
Ecosystem Function ◽  
Fish Community ◽  
Prey Capture ◽  
Fish Communities ◽  
Functional Trait ◽  
Ecosystem Functions ◽  
Community Biomass ◽  
Ecosystem Valuation ◽  
Species Abundances

Biodiversity and ecosystem function are often correlated, but there are multiple hypotheses about the mechanisms underlying this relationship. Ecosystem functions such as primary or secondary production may be maximized by species richness, evenness in species abundances, or the presence or dominance of species with certain traits. Here, we combined surveys of natural fish communities (conducted in July and August, 2016) with morphological trait data to examine relationships between diversity and ecosystem function (quantified as fish community biomass) across 14 subtidal eelgrass meadows in the Northeast Pacific (54° N 130° W). We employed both taxonomic and functional trait measures of diversity to investigate if ecosystem function is driven by species diversity (complementarity hypothesis) or by the presence or dominance of species with particular trait values (selection or dominance hypotheses). After controlling for environmental variation, we found that fish community biomass is maximized when taxonomic richness and functional evenness is low, and in communities dominated by species with particular trait values – those associated with benthic habitats and prey capture. While previous work on fish communities has found that species richness is positively correlated with ecosystem function, our results instead highlight the capacity for regionally prevalent and locally dominant species to drive ecosystem function in moderately diverse communities. We discuss these alternate links between community composition and ecosystem function and consider their divergent implications for ecosystem valuation and conservation prioritization.

Functional trait diversity across trophic levels determines herbivore impact on plant community biomass

2015 ◽  
Vol 18 (12) ◽  
pp. 1346-1355 ◽  
Author(s):  
Hélène Deraison ◽  
Isabelle Badenhausser ◽  
Nicolas Loeuille ◽  
Christoph Scherber ◽  
Nicolas Gross
Keyword(s):  
Plant Community ◽  
Functional Trait ◽  
Trophic Levels ◽  
Community Biomass ◽  
Trait Diversity ◽  
Herbivore Impact ◽  
Functional Trait Diversity

Comparing Neutral and Trade-off Community Models in Shaping the Community Biomass-Diversity Relationship Under Different Disturbance Levels

2013 ◽  
Vol 75 (2) ◽  
pp. 213-222
Author(s):  
Sa Xiao ◽  
Liang Zhao ◽  
Jia-Lin Zhang ◽  
Xiang-Tai Wang ◽  
Shu-Yan Chen
Keyword(s):  
Trade Off ◽  
Community Biomass

Effective and ineffective root nodules in Myrica faya

1976 ◽  
Vol 194 (1116) ◽  
pp. 285-293 ◽  
Keyword(s):  
Root Nodules ◽  
Light And Electron Microscopy ◽  
Nodule Formation ◽  
Culture Solution ◽  
Myrica Gale ◽  
Main Site ◽  
Myrica Faya ◽  
Modern Methods ◽  
Infected Cells ◽  
Nodule Endophytes

In cross-inoculation trials, inocula containing the nodule endophytes of Myrica gale, M. cerifera, M. cordifolia and M. pilulifera respectively were applied to the roots of young plants of M. faya Ait. growing in nitrogen-free culture solution. All four inocula induced nodule formation, and except where the M. gale inoculum had been used the nodules were of effective type and enabled the plants bearing them to grow nearly as well as other M. faya plants associated with the normal endophyte. The nodules induced by the M. gale endophyte were very numerous, but remained small and fixed no significant amount of nitrogen, and were thus ineffective. Light and electron microscopy showed that in the effective nodules induced by the normal endophyte or by that of M. cordifolia , the endophyte was confined to a layer 1-2 cells deep near the middle of the nodule cortex, and that in respect of the width of the hyphae and their production of club-shaped internally subdivided vesicles, the endophytes resembled closely those in the nodules of the few other species of Myrica that have been studied by modern methods of microscopy. In ineffective nodules the disposition of the infected cells was unchanged, but within the cells only a sparse development of the endophyte was observed, and no vesicles were found. The finding that nodules lacking vesicles showed little or no fixation is consistent with other evidence that the vesicles normally produced by non-legume nodule endophytes are the main site of nitrogen fixation.

EFFECTS OF SPECIES DIVERSITY ON COMMUNITY BIOMASS PRODUCTION CHANGE OVER THE COURSE OF SUCCESSION

Ecology ◽  
2007 ◽  
Vol 88 (4) ◽  
pp. 929-939 ◽  
Author(s):  
Jerome J. Weis ◽  
Bradley J. Cardinale ◽  
Kenneth J. Forshay ◽  
Anthony R. Ives
Keyword(s):  
Species Diversity ◽  
Biomass Production ◽  
Community Biomass ◽  
Production Change

scholarly journals Does biodiversity increase spatial stability in plant community biomass?

2008 ◽  
Vol 11 (4) ◽  
pp. 338-347 ◽  
Author(s):  
Alexandra Weigelt ◽  
Jens Schumacher ◽  
Christiane Roscher ◽  
Bernhard Schmid
Keyword(s):  
Plant Community ◽  
Spatial Stability ◽  
Community Biomass

scholarly journals The subgingival microbiome in health and periodontitis and its relationship with community biomass and inflammation

2013 ◽  
Vol 7 (5) ◽  
pp. 1016-1025 ◽  
Author(s):  
Loreto Abusleme ◽  
Amanda K Dupuy ◽  
Nicolás Dutzan ◽  
Nora Silva ◽  
Joseph A Burleson ◽  
...  
Keyword(s):  
Community Biomass
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