RT Journal Article
T1 Impact of wildfire ash on bacterioplankton abundance and community composition in a coastal embayment (Ría de Vigo, NW Spain)
A1 Gutiérrez Barral, Alberto
A1 Teira Gonzalez, Eva Maria
A1 Diaz Alonso, Alexandra
A1 Justel Diez, Maider
A1 Kaal, Joeri
A1 Fernández Suárez, Emilio Manuel
K1 3308.11 Control de la Contaminación del Agua
AB Wildfire ash can have an impact on coastal prokaryotic plankton. To understand the extent to which community composition and abundance of coastal prokaryotes are affected by ash, two ash addition experiments were performed. Ash from a massive wildfire that took place in the Ría de Vigo watershed in October 2017 was added to natural surface water samples collected in the middle sector of the ría during the summer of 2019 and winter of 2020, and incubated for 72 h, under natural water temperature and irradiance conditions. Plankton responses were assessed through chlorophyll a and bacterial abundance measurements. Prokaryotic DNA was analyzedusing 16S rRNA gene partial sequencing. In summer, when nutrient concentrations were low in the ría, the addition of ash led to an increase in phytoplankton and bacterial abundance, increasing the proportions of Alteromonadales, Flavobacteriales, and the potentially pathogenic Vibrio, among other taxa. After the winterrunoff events, nutrient concentrations in the Ría de Vigo were high, and only minor changes in bacterial abundance were detected. Our findings suggest that the compounds associated with wildfire ash can alter the composition of bacterioplanktonic communities, which is relevant information for the management of coastalecosystems in fire-prone areas.
PB Marine Environmental Research
SN 01411136
YR 2024
FD 2024-02
LK http://hdl.handle.net/11093/5651
UL http://hdl.handle.net/11093/5651
LA eng
NO Marine Environmental Research, 194, 106317 (2024)
NO Agencia Estatal de Investigación | Ref. CTM 2017-83362-R
DS Investigo
RD 25-abr-2025