Show simple item record

dc.contributor.author Bosc, Christopher
dc.contributor.author Hui, Cang
dc.contributor.author Roets, Francois
dc.contributor.author Pauw, Anton
dc.coverage.spatial South Africa
dc.date.accessioned 2019-07-11T16:50:16Z
dc.date.available 2019-07-11T16:50:16Z
dc.date.issued 2019-07-11
dc.identifier doi:10.5061/dryad.t5n8805
dc.identifier.citation Bosc C, Hui C, Roets F, Pauw A (2019) Importance of biotic niches versus drift in a plant‐inhabiting arthropod community depends on rarity and trophic group. Ecography, online in advance of print.
dc.identifier.uri http://hdl.handle.net/10255/dryad.222626
dc.description Communities are mostly composed of rare species; yet, the factors that determine their patterns of occurrence remain obscure. Theory predicts that, in contrast with common species, the occurrence of rare species will be poorly correlated with environmental variables (niches) and more affected by stochasticity (ecological drift), but how this pattern varies across different trophic groups is still poorly understood. Here, we compared the ability of environmental variables (bottom-up biotic niches) to predict the occurrence of plant-dwelling arthropods across different abundance classes in the Cape Floristic Region of South Africa. We compared three trophic groups, including 104 herbivorous hemipteran, 171 parasitoid wasp and 84 spider species, totalling 4511 individuals in 48 quadrats. To quantify bottom-up biotic niches, we studied the influences of species composition of plants on hemipterans, and of plants and hemipterans on spiders and wasps. We compared the observed strength of the correlation between rare species and their niches with expectations that were generated by repeatedly rarefying abundant species. A large proportion of arthropod species were very rare, i.e. with only 1 or 2 individuals (49-55%). Although rarefying abundant species greatly decreased the correlation with bottom-up biotic niches, bottom-up biotic niches generally better predicted the occurrence of rarefied abundant species than very rare ones, suggesting a greater influence of drift on very rare arthropods. That is, (very) rare arthropods are distributed more randomly than rarefied abundant species. Nevertheless, trophic groups differed in the details of their response to bottom-up biotic niches. Plant species composition was a better predictor of rarefied abundant than truly rare hemipterans. In contrast, the importance of bottom-up biotic niches among abundance classes varied less visibly in spiders and wasps. Our study thus suggests that the importance of niches in structuring arthropod communities depends on species rarity and trophic group.
dc.relation.haspart doi:10.5061/dryad.t5n8805/1
dc.relation.haspart doi:10.5061/dryad.t5n8805/2
dc.relation.haspart doi:10.5061/dryad.t5n8805/3
dc.relation.haspart doi:10.5061/dryad.t5n8805/4
dc.relation.haspart doi:10.5061/dryad.t5n8805/5
dc.relation.haspart doi:10.5061/dryad.t5n8805/6
dc.relation.haspart doi:10.5061/dryad.t5n8805/7
dc.relation.haspart doi:10.5061/dryad.t5n8805/8
dc.relation.isreferencedby 10.1111/ecog.04396
dc.relation.isreferencedby doi:10.1111/ecog.04396
dc.subject Niche
dc.subject Drift
dc.subject Bottom-up effects
dc.subject Variation partitioning
dc.subject Plants
dc.subject Arthropods
dc.title Data from: Importance of biotic niches versus drift in a plant-inhabiting arthropod community depends on rarity and trophic group
dc.type Article
dwc.ScientificName Hemiptera
dwc.ScientificName Araneae
dwc.ScientificName Hymenoptera Parasitica
dc.contributor.correspondingAuthor Bosc, Christopher
prism.publicationName Ecography

Files in this package

Content in the Dryad Digital Repository is offered "as is." By downloading files, you agree to the Dryad Terms of Service. To the extent possible under law, the authors have waived all copyright and related or neighboring rights to this data. CC0 (opens a new window) Open Data (opens a new window)

Title HemipteranAbundances_Dec2014
Downloaded 3 times
Description Number of individuals per quadrat for hemipteran morpho-species collected on the vegetation at Jonkershoek on December 2014 (six year old vegetation (post-fire age)).
Download HemipteranAbundances_Dec2014.csv (12.56 Kb)
Download README.txt (786 bytes)
Details View File Details
Title SpiderAbundances_Dec2014
Downloaded 2 times
Description Number of individuals per quadrat for spider morpho-species collected on the vegetation at Jonkershoek on December 2014 (six year old vegetation (post-fire age)).
Download SpiderAbundances_Dec2014.csv (10.10 Kb)
Download README.txt (782 bytes)
Details View File Details
Title WaspAbundances_Dec2014
Downloaded 2 times
Description Number of individuals per quadrat for parasitoid wasp morpho-species collected on the vegetation at Jonkershoek on December 2014 (six year old vegetation (post-fire age)).
Download WaspAbundances_Dec2014.csv (20.15 Kb)
Download README.txt (791 bytes)
Details View File Details
Title PlantCovers_m2_Dec2014
Downloaded 2 times
Description Cover (in m2) per quadrat for plant morpho-species sampled at Jonkershoek on December 2014 (six year old vegetation (post-fire age)).
Download PlantCovers_m2_Dec2014.csv (19.13 Kb)
Download README.txt (753 bytes)
Details View File Details
Title HemipteranTaxonomy_Dec2014
Downloaded 1 time
Description Taxonomy of hemipterans collected on the vegetation at Jonkershoek on December 2014 (six year old vegetation (post-fire age)).
Download HemipteranTaxonomy_Dec2014.csv (11.19 Kb)
Details View File Details
Title SpiderTaxonomy_Dec2014
Downloaded 1 time
Description Taxonomy of spiders collected on the vegetation at Jonkershoek on December 2014 (six year old vegetation (post-fire age)).
Download SpiderTaxonomy_Dec2014.csv (8.828 Kb)
Details View File Details
Title WaspTaxonomy_Dec2014
Downloaded 1 time
Description Taxonomy of parasitoid wasps collected on the vegetation at Jonkershoek on December 2014 (six year old vegetation (post-fire age)).
Download WaspTaxonomy_Dec2014.csv (16.92 Kb)
Details View File Details
Title PlantTaxonomy_Dec2014
Downloaded 1 time
Description Taxonomy of plants collected on the vegetation at Jonkershoek on December 2014 (six year old vegetation (post-fire age)).
Download PlantTaxo_Dec2014.csv (10.21 Kb)
Details View File Details

Search for data

Be part of Dryad

We encourage organizations to: