Marine-derived nutrients shape the functional composition of High Arctic plant communities

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F25%3A00636205" target="_blank" >RIV/67985939:_____/25:00636205 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/25:10513032

Výsledek na webu

<a href="https://doi.org/10.1111/1365-2435.70056" target="_blank" >https://doi.org/10.1111/1365-2435.70056</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/1365-2435.70056" target="_blank" >10.1111/1365-2435.70056</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Marine-derived nutrients shape the functional composition of High Arctic plant communities

Popis výsledku v původním jazyce

Low temperatures and nutrient limitation have shaped Arctic plant communities, which are now affected by biome-wise changes in both climate and nutrient cycling. Rising temperatures are favouring taller plant species with more resource-acquisitive traits across the Arctic tundra. Simultaneously, declines in seabird populations may reduce subsidies of marine-derived nutrients to terrestrial ecosystems, potentially favouring more resource-conservative plant traits. It is crucial to understand the consequences of these concurrent changes in climate and marine-derived nutrient inputs from seabirds for the functional composition and roles of Arctic plant communities. We use a 'space-for-time approach' to compare the functional composition of vascular plant communities across two elevational gradients in High Arctic Svalbard, one where climate is the major environmental driver and one influenced by nutrient input from a seabird colony. We assess changes in 13 traits related to plant size, leaf economics and nutrient cycling along the two gradients, and we also explore the relative contributions of species turnover and intraspecific variation to total trait variation across and between the gradients. Elevation per se had little impact on the plant functional composition. Instead, plants at the top of the seabird nutrient gradient, closest to the nesting sites, were taller and had resource-acquisitive trait values, such as larger and thicker leaves and higher leaf nutrient contents. Enriched soil delta N-15 parts per thousand signatures at these sites correlated with resource-acquisitive values of leaf area, specific leaf area, leaf dry matter content, leaf phosphorous content and with enriched leaf delta N-15 parts per thousand signatures. This variation in leaf economic traits and isotopes was largely driven by intraspecific variation at the nutrient gradient, whereas species turnover dominated at the reference gradient. Our results are consistent with marine-derived nutrient subsidies from seabirds being a major driver of functional trait variation in Arctic vegetation. Ongoing declines in seabird populations may therefore affect terrestrial primary producer communities in the Arctic and beyond, with potentially important but unknown implications for biodiversity, consumer and decomposer communities, and ecosystem processes.

Název v anglickém jazyce

Marine-derived nutrients shape the functional composition of High Arctic plant communities

Popis výsledku anglicky

Low temperatures and nutrient limitation have shaped Arctic plant communities, which are now affected by biome-wise changes in both climate and nutrient cycling. Rising temperatures are favouring taller plant species with more resource-acquisitive traits across the Arctic tundra. Simultaneously, declines in seabird populations may reduce subsidies of marine-derived nutrients to terrestrial ecosystems, potentially favouring more resource-conservative plant traits. It is crucial to understand the consequences of these concurrent changes in climate and marine-derived nutrient inputs from seabirds for the functional composition and roles of Arctic plant communities. We use a 'space-for-time approach' to compare the functional composition of vascular plant communities across two elevational gradients in High Arctic Svalbard, one where climate is the major environmental driver and one influenced by nutrient input from a seabird colony. We assess changes in 13 traits related to plant size, leaf economics and nutrient cycling along the two gradients, and we also explore the relative contributions of species turnover and intraspecific variation to total trait variation across and between the gradients. Elevation per se had little impact on the plant functional composition. Instead, plants at the top of the seabird nutrient gradient, closest to the nesting sites, were taller and had resource-acquisitive trait values, such as larger and thicker leaves and higher leaf nutrient contents. Enriched soil delta N-15 parts per thousand signatures at these sites correlated with resource-acquisitive values of leaf area, specific leaf area, leaf dry matter content, leaf phosphorous content and with enriched leaf delta N-15 parts per thousand signatures. This variation in leaf economic traits and isotopes was largely driven by intraspecific variation at the nutrient gradient, whereas species turnover dominated at the reference gradient. Our results are consistent with marine-derived nutrient subsidies from seabirds being a major driver of functional trait variation in Arctic vegetation. Ongoing declines in seabird populations may therefore affect terrestrial primary producer communities in the Arctic and beyond, with potentially important but unknown implications for biodiversity, consumer and decomposer communities, and ecosystem processes.

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

2025

Kód důvěrnosti údajů

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

Název periodika

Functional Ecology

ISSN

0269-8463

e-ISSN

1365-2435

Svazek periodika

39

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

1606-1621

Kód UT WoS článku

001483381900001

EID výsledku v databázi Scopus

2-s2.0-105004690197