Nutrient availability and grazing influence the strength of priority effects in bacterial freshwater communities (data set)
type: Dataset
description: We conducted an experiment to investigate the importance of priority effects in bacterial communities with regard to nutrient availability and grazing. In the course of the experiment, we measured nutrient availability as total phosphorus (TP) spectrophotometrically. Total nitrogen (TN), as well as total organic carbon (TOC) levels, were obtained by catalytic thermal decomposition method. The combined dataset shows the nutrient values for the original lakes, the sterile media used in the experiment as well as all experimental samples for both sampling occasions (day 10 and day 15). Bacterial abundances were monitored using flow cytometry (FC) count data. The combined dataset includes bacterial count data from the pre-cultivation of the bacterial communities before the start of the experiment. Bacterial count data from the running experiment are included afterward. Heterotrophic nanoflagellates (HNF) as the bacterial grazers were counted microscopically. The dataset shows HNF counts from grazing treatments in the experiment starting from day 3. On experimental days 3 and 10, additional non-grazing treatments were included to examine the potential presence of HNF. When bacterial communities mix, immigration history can fundamentally affect the community composition as a result of priority effects. Priority effects arise when an early immigrant exhausts resources and/or alters habitat conditions, thereby influencing the establishment success of the late arriver. The strength of priority effects is context dependent and expected to be stronger if environmental conditions favor the growth of the first arriver. In this study we conducted a two-factorial experiment testing the importance of nutrient availability and grazing on the strength of priority effects in complex aquatic bacterial communities. We did so by mixing two dissimilar communities, simultaneously, and with a 38 hours’ time-delay. Priority effects were measured as the invasion resistance of the first communi…
conditions of access: http://publications.europa.eu/resource/authority/access-right/PUBLIC
conditions of access: info:eu-repo/semantics/openAccess
creative work status: completed
  type: DefinedTerm
  in defined term set: http://publications.europa.eu/resource/authority/dataset-status
  term code: COMPLETED
creator: Theresa Lumpi
date modified: 2025-07-01
date published: 2023-01-26
language: English
is part of: https://doi.org/10.57804/g2nj-7j75
keywords: Ecology
  type: DefinedTerm
  description: Including: Biodiversity Conservation
  term code: 10611
keywords: priority effects
keywords: bacterial communities
keywords: nutrient availability
keywords: grazing
publisher: Uppsala University
distribution: data/bacterial_abundance.xlsx
  type: DataDownload
  additional type: data
  conditions of access: http://publications.europa.eu/resource/authority/access-right/PUBLIC
  conditions of access: info:eu-repo/semantics/openAccess
  content size: 120754
  encoding format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
distribution: data/flagellate_abundance.xlsx
  type: DataDownload
  additional type: data
  conditions of access: http://publications.europa.eu/resource/authority/access-right/PUBLIC
  conditions of access: info:eu-repo/semantics/openAccess
  content size: 35304
  encoding format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
distribution: data/nutrients.xlsx
  type: DataDownload
  additional type: data
  conditions of access: http://publications.europa.eu/resource/authority/access-right/PUBLIC
  conditions of access: info:eu-repo/semantics/openAccess
  content size: 25595
  encoding format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
version: 1

PropertyValue
property ID: DOI
value: 10.57804/37n0-ps04

PropertyValue
property ID: URN
value: urn:nbn:se:uu:diva-495206

Theresa Lumpi
type: Person
affiliation: Uppsala University
family name: Lumpi
given name: Theresa

Uppsala University
type: Organization
department: Department of Ecology and Genetics, Limnology

English
type: Language
alternate name: eng