@misc{10481/74091,
year = {2022},
month = {3},
url = {http://hdl.handle.net/10481/74091},
abstract = {Coastal wetlands are valuable aquatic ecosystems with high biological productivity, which provide services such as a reduction
in nitrogen loading into coastal waters and storage of organic carbon acting as carbon dioxide sinks. The predicted rise
of sea level or freshwater extractions, particularly in the arid Mediterranean biome, will salinize many coastal wetlands.
However, there is considerable uncertainty about how salinization will affect microbial communities and biogeochemical
processes. We determined the abundance of total prokaryotes, cyanobacteria, and viruses and quantified the heterotrophic
production of prokaryotes sensitive- (predominantly Bacteria) and resistant- (predominantly Archaea) to erythromycin in
112 ponds from nine coastal wetlands. We explored the main drivers of prokaryotic abundance and heterotrophic production
using generalized linear models (GLMs). The best GLM, including all the wetlands, indicated that the concentration of total
dissolved nitrogen (TDN) positively affected the total abundance of prokaryotes and the heterotrophic erythromycin-resistant
(ery-R) production. In contrast, heterotrophic erythromycin-sensitive (ery-S) production was negatively related to TDN. This
negative relationship appeared to be mediated by salinity and virus abundance. Heterotrophic ery-S production declined as
salinity and virus abundance increased. Consequently, we observed a switch from heterotrophic ery-S production towards
ery-R production as salinity and virus abundance increased. Our results imply that microbial activity will change from
heterotrophic bacterial-dominated processes to archaeal-dominated processes with anthropogenic nitrogen and salinization
increases. However, more studies are required to link the mineralization rates of dissolved nitrogen and organic carbon with
specific archaeal taxa to enable more accurate predictions on future scenarios in coastal wetlands.},
organization = {Universidad de Granada/CBUA},
organization = {Spanish Government	CGL2010-15812	
RTI2018-098849-B-I00},
organization = {Modeling Nature Scientific Unit	UCE. PP2017.03},
organization = {European Commission},
organization = {PhD fellowship FPI (Formacion del Personal Investigador)	BES2011-043658},
publisher = {Springer},
keywords = {Coastal wetlands},
keywords = {Heterotrophic prokaryotic abundance and production},
keywords = {Cyanobacteria},
keywords = {Viruses},
keywords = {Salinity},
keywords = {Nitrogen},
title = {Patterns of microbial abundance and heterotrophic activity along nitrogen and salinity gradients in coastal wetlands},
doi = {10.1007/s00027-022-00855-6},
author = {Batanero Franco, Gema Laura and Reche Cañabate, Isabel},
}