UDTR — Radar mondial des droits de la Nature

Data from: Contrasting conclusions in the study of wetland bird abundances show the importance of multi-level insights into protection and restoration actions

Identification

Clé publique

radar:r-48265c5d4321436a4a8f8198735e0332

Auteurs

Lehikoinen, Petteri · Xu, Yanjie · Mikkola-Roos, Markku · Lehikoinen, Aleksi · Jaatinen, Kim

Année déclarée

2026

Langue déclarée

en

Type source

Dataset

Première détection

2026-11-13T15:29:11.985365+00:00

Dernière observation des métadonnées

2026-11-13T15:29:11.985365+00:00

Dernière vérification HTTP

Non effectuée

Institutions déclarées par la source

University of Helsinki · Finnish Environment Institute

Résumé documentaire — langue originale

Wetland biodiversity has declined around the world due to habitat loss and degradation. To alter this trend several management actions still are taken including protection and restoration. The management responses may vary across analytical scales including species, functional groups and total waterbird abundance, but it is rarely investigated how similar conclusions these approaches yield. 2. We evaluated how wetland protection and small-scale restoration actions influenced breeding waterbird abundances and species richness by using a 34-year dataset (1986–2019) from 994 naturally eutrophic wetlands across Finland. Protected wetlands supported higher waterbird abundances and species richness than unprotected sites, indicating successful conservation prioritisation. Contrary to expectations, population trends at protected sites were generally more negative than at unprotected wetlands; a finding potentially related to the higher initial waterbird numbers at protected sites allowing a decline not possible at unprotected sites that harbour less waterbirds. Inference depended strongly on the response metric: species-specific models suggested stable or increasing trends, whereas total abundance models revealed overall declines. Within protected wetlands restored sites exhibited higher abundances and species richness than unrestored sites. However, wetlands restored with multiple restoration actions showed more negative total abundance trends than those restored with one action. Responses varied markedly among guilds and species, with increases in some groups (e.g. large herbivores) and persistent declines in several diving species. Species richness trends did not differ among protection or restoration categories. Wetlands selected for protection and restoration harbour high biodiversity value but may still experience declining water bird populations, likely reflecting broad-scale environmental pressures not mitigated by the small-scale protection and restoration. Contrasting results between species-specific and total abundance models highlight the importance of using multiple response metrics when evaluating management effectiveness. Conservation assessments should thus integrate species-, functional-group- and community-level indicators and address drivers operating beyond site boundaries, including catchment-level processes. These findings provide evidence-based guidance for large-scale wetland restoration and management initiatives, including national programmes and the EU Nature Restoration Regulation.

Identifiants

DOI

10.5061/dryad.bcc2fqzvq

Repères documentaires

Famille documentaire

dataset

Types déclarés par les sources

Dataset

Éditeurs

Dryad

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Sources

DataCite · Document 1

• Document · https://datadryad.org/dataset/doi:10.5061/dryad.bcc2fqzvq

Statut documentaire

Pertinence à examiner

Bibliothèque

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