2020
DOI: 10.7717/peerj.8608
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Effects of diversity and coalescence of species assemblages on ecosystem function at the margins of an environmental shift

Abstract: Sea level rise is mixing formerly isolated freshwater communities with saltwater communities. The structure of these new aquatic communities is jointly controlled by pre-and post-colonization processes. Similarly, since salinity is a strong abiotic determinant of post-colonization survival in coastal systems, changes in salinity will likely impact community composition. In this study, we examine how a strong abiotic gradient affects the diversity and structure of bacterial and zooplankton communities and assoc… Show more

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Cited by 6 publications
(7 citation statements)
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“…Community analysis was focused on three of the time points (days 0, 18, and 45; 11 June 2015, 29 June 2015, and 25 July 2015, respectively), representing the initial, middle, and end of the experiment. Besides salinity levels, measured nitrogen and phosphorus concentrations were similar among treatment tanks (26).…”
Section: Methodsmentioning
confidence: 90%
See 1 more Smart Citation
“…Community analysis was focused on three of the time points (days 0, 18, and 45; 11 June 2015, 29 June 2015, and 25 July 2015, respectively), representing the initial, middle, and end of the experiment. Besides salinity levels, measured nitrogen and phosphorus concentrations were similar among treatment tanks (26).…”
Section: Methodsmentioning
confidence: 90%
“…Sample collection occurred every 9 days (due to average time for completion of one zooplankton generation cycle) (27) over the 6-week mesocosm experiment for a total of six time points. The salinity × dispersal setup was replicated 4 times to generate 16 tanks (4 at each salinity level) with the salt dispersal treatment or with the fresh+salt dispersal treatment (26). For each tank, the following were measured using a YSI Pro: dissolved oxygen, ammonium (NH 4 + ), temperature, and pH.…”
Section: Methodsmentioning
confidence: 99%
“…Increasing salinity has been systematically found to decrease autochthonous and allochthonous organic matter decomposition, microbial activity and/or fungal biomass associated with decomposing litter [11,12,23]. A significant decrease of mass loss of the North American species (family Sapindaceae) Acer rubrum leaf litter in mesocosms has been found with increasing salinity (0 to 13 psu) and mass loss correlated with bacterial diversity, with distinct bacterial communities associated to each of the four tested salinities [24]. Interestingly, bacterial diversity in the latter study increased with salinity during the first 18 days, suggesting that some small compensation by bacteria mitigated the effect of salinity, but the effect may be temporary since the pattern was reversed the longer the term.…”
Section: Leaf Litter Decomposition and Associated Invertebratesmentioning
confidence: 92%
“…The copyright holder for this preprint this version posted January 11, 2022. ; https://doi.org/10.1101/2022.01.10.475621 doi: bioRxiv preprint aquatic bacterial communities (13,(38)(39)(40)(41). However, there were disparities in how well communities in each mesocosm size tracked temporal changes in salinity.…”
Section: Salinity Press Disturbance Enforces Environmental Trackingmentioning
confidence: 99%