Unexpected functional diversity of stream biofilms within and across proglacial floodplains despite close spatial proximity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10474877" target="_blank" >RIV/00216208:11310/23:10474877 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ZkWQDzRXkG" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ZkWQDzRXkG</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/lno.12415" target="_blank" >10.1002/lno.12415</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unexpected functional diversity of stream biofilms within and across proglacial floodplains despite close spatial proximity

Popis výsledku v původním jazyce

High-mountain streams are particularly vulnerable to climate change because they intimately interface with the cryosphere. As glaciers shrink and snowpack diminishes, proglacial streams will eventually shift from being glacier-fed to streams fed by groundwater, snowmelt and precipitation. This shift will affect both the flow regime and physico-chemical characteristics of streams, possibly also the structure and function of their benthic microbiome. Here, we applied genome-resolved metagenomics to benthic biofilms from glacier-fed streams and their groundwater-fed tributaries within three proglacial floodplains in the Swiss Alps. Despite the close spatial proximity between both stream types, their microbiome structure differed consistently for both prokaryotes and eukaryotes. The glacier-fed stream microbiome was taxonomically and functionally less diverse than its groundwater-fed counterpart, and had smaller genomes, but with conservation of the central metabolic functions primarily related to nitrogen and sulfur cycling. Consequently, much higher functional variability was associated with the microbiome of tributary streams, mainly due to abundant genes involved in the transport and degradation of organic matter. Our findings suggest that glacier shrinkage will cause shifts in the functioning of benthic microbiomes of proglacial floodplains with yet unknown consequences for downstream biogeochemistry.

Název v anglickém jazyce

Unexpected functional diversity of stream biofilms within and across proglacial floodplains despite close spatial proximity

Popis výsledku anglicky

High-mountain streams are particularly vulnerable to climate change because they intimately interface with the cryosphere. As glaciers shrink and snowpack diminishes, proglacial streams will eventually shift from being glacier-fed to streams fed by groundwater, snowmelt and precipitation. This shift will affect both the flow regime and physico-chemical characteristics of streams, possibly also the structure and function of their benthic microbiome. Here, we applied genome-resolved metagenomics to benthic biofilms from glacier-fed streams and their groundwater-fed tributaries within three proglacial floodplains in the Swiss Alps. Despite the close spatial proximity between both stream types, their microbiome structure differed consistently for both prokaryotes and eukaryotes. The glacier-fed stream microbiome was taxonomically and functionally less diverse than its groundwater-fed counterpart, and had smaller genomes, but with conservation of the central metabolic functions primarily related to nitrogen and sulfur cycling. Consequently, much higher functional variability was associated with the microbiome of tributary streams, mainly due to abundant genes involved in the transport and degradation of organic matter. Our findings suggest that glacier shrinkage will cause shifts in the functioning of benthic microbiomes of proglacial floodplains with yet unknown consequences for downstream biogeochemistry.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Limnology and Oceanography

ISSN

0024-3590

e-ISSN

1939-5590

Svazek periodika

68

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

2183-2194

Kód UT WoS článku

001050263900001

EID výsledku v databázi Scopus

2-s2.0-85168361338