WorldCat Identities

Rzanny, Michael

Overview
Works: 14 works in 17 publications in 2 languages and 35 library holdings
Roles: Author, Other
Publication Timeline
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Most widely held works by Michael Rzanny
Praxishandbuch - Naturschutz im Buchenwald Naturschutzziele und Bewirtschaftsungsempfehlungen für reife Buchenwälder Nordostdeutschlands by Susanne Winter( Book )

3 editions published between 2015 and 2017 in German and held by 11 WorldCat member libraries worldwide

Trait-based functional groups of grassland arthropods a tool to scale-up ecological communities by Michael Carsten Rzanny( Book )

1 edition published in 2014 in English and held by 5 WorldCat member libraries worldwide

Flowers, leaves or both? How to obtain suitable images for automated plant identification by Michael Carsten Rzanny( )

2 editions published in 2019 in English and held by 4 WorldCat member libraries worldwide

Acquiring and preprocessing leaf images for automated plant identification: understanding the tradeoff between effort and information gain by Michael Rzanny( )

1 edition published in 2017 in English and held by 2 WorldCat member libraries worldwide

Automated plant species identification - trends and future directions by Jana Wäldchen( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Flora Capture - An Adaptive Digital Herbarium Using Mobile Devices by David Boho( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Plant species classification using flower images - a comparative study of local feature representations by Marco Seeland( )

1 edition published in 2017 in English and held by 2 WorldCat member libraries worldwide

Recommending plant taxa for supporting on-site species identification by Hans Christian Wittich( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Image-based classification of plant genus and family for trained and untrained plant species by Marco Seeland( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Bottom-up and top-down forces structuring consumer communities in an experimental grassland by Michael Rzanny( )

1 edition published in 2013 in English and held by 1 WorldCat member library worldwide

Plant diversity induces shifts in the functional structure and diversity across trophic levels( )

in Undetermined and held by 1 WorldCat member library worldwide

Bottom-up and top-down forces structuring consumer communities in an experimental grassland( )

1 edition published in 2012 in English and held by 1 WorldCat member library worldwide

Abstract Synthesis The interplay between bottom-up and top-down effects is certainly a general manifestation of any changes in both species abundances and diversity. Summary variables, such as species numbers, diversity indices or lumped species abundances provide too limited information about highly complex ecosystems. In contrast, species by species analyses of ecological communities comprising hundreds of species are inevitably only snapshot-like and lack generality in explaining processes within communities. Our synthesis, based on species matrices of functional groups of all trophic levels, simplifies community complexity to a manageable degree while retaining full species-specific information. Taking into account plant species richness, plant biomass, soil properties and relevant spatial scales, we decompose variance of abundance in consumer functional groups to determine the direction and the magnitude of community controlling processes. After decades of intensive research, the relative importance of top-down and bottom-up control for structuring ecological communities is still a particularly disputed issue among ecologists. In our study, we determine the relative role of bottom-up and top-down forces in structuring the composition of 13 arthropod functional groups (FG) comprising different trophic consumer levels. Based on species-specific plant biomass and arthropod abundance data from 50 plots of a grassland biodiversity experiment, we quantified the proportions of bottom-up and top-down forces on consumer FG composition while taking into account direct and indirect effects of plant diversity, functional diversity, community biomass, soil properties and spatial arrangement of these plots. Variance partitioning using partial redundancy analysis explained 21-44% of total variation in arthropod functional group composition. Plant-mediated bottom-up forces accounted for the major part of the explainable variation within the composition of all FGs. Predator-mediated top-down forces, however, were much weaker, yet influenced the majority of consumer FGs. Plant functional group composition, notably legume composition, had the most important impact on virtually all consumer FGs. Compared to plant species richness and plant functional group richness, plant community biomass explained a much higher proportion of variation in consumer community composition
Plant diversity alters the representation of motifs in food webs by Darren P Giling( )

1 edition published in 2019 in English and held by 0 WorldCat member libraries worldwide

Increasing ecological multifunctionality during early plant succession by Susanne Winter( )

1 edition published in 2019 in English and held by 0 WorldCat member libraries worldwide

 
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Audience Level
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Audience Level
1
  Kids General Special  
Audience level: 0.94 (from 0.76 for Flowers, l ... to 1.00 for Trait-base ...)

Alternative Names
Michael Rzanny investigador

Michael Rzanny wetenschapper

Rzanny, M. 1981-

Rzanny, Michael 1981-

Languages
English (13)

German (3)