UDTR — Radar mondial des droits de la Nature

Data from: Seasonal variation of ecosystem processes in a large Arctic Lake

Identification

Clé publique

radar:r-845bf15a53a33a0479e816ce2ee98592

Auteurs

Mingzhen Zhang · Jan Weckström · Kaarina Weckström · Suzanne McGowan · Maija Heikkilä

Année déclarée

2026

Langue déclarée

en

Type source

dataset

Première détection

2026-11-14T02:13:06.043634+00:00

Dernière observation des métadonnées

2026-11-14T02:13:06.043634+00:00

Dernière vérification HTTP

Non effectuée

Institutions déclarées par la source

University of Helsinki · Netherlands Institute of Ecology · Geological Survey of Finland

Pays d’affiliation déclarés

FI · NL

Résumé documentaire — langue originale

Despite previous research on under-ice ecology and thermal drivers of productivity, year-round datasets of Arctic lake ecosystem dynamics remain limited. We conducted continuous observations of lake water-column temperatures, water quality and vertical fluxes of organic matter and algal pigments between April 2022 and April 2023 in Lake Kilpisjärvi, Finland. The ultraoligotrophic lake exhibited minor year-round variation in water quality, while distinct seasonal patterns in algal diversity and indicators of production were driven by shifts in thermal structure, including brief spring overturn, weak summer stratification with frequent large-scale wind‑driven mixing, extended autumn overturn, and weak winter inverse stratification. Autumn was the most productive season, with nutrient enrichment from overturn supporting diverse algal communities including diatoms, chrysophytes, cryptophytes, chlorophytes, and cyanobacteria. Spring phytoplankton communities were dominated by siliceous algae. Summer stratification was weak overall with a brief interval of stability that may have limited nutrient availability supporting the development of a deep chlorophyll maximum dominated by motile cryptophytes. Under-ice production was observed in both spring and autumn, but not in winter polar night. The year-round dataset from Lake Kilpisjärvi highlights the key role of thermal processes and wind-driven mixing, offering insights into large Arctic lake ecosystems and informing future monitoring.

Identifiants

OPENALEX

https://openalex.org/W7223666539

DOI

10.5061/dryad.jm63xsjst

Repères documentaires

Famille documentaire

dataset

Types déclarés par les sources

dataset

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Sources

OpenAlex · Document 1

• Document · https://doi.org/10.5061/dryad.jm63xsjst

Statut documentaire

Pertinence à examiner

Bibliothèque

Cette identité n’est pas encore intégrée à la Bibliothèque juridique.