ArticleCommunications earth & environment2026
Gatekeeper wetlands govern nutrient pathways in a continental basin.
Article in Communications earth & environment, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
1 citing paper in PubMed.
- Gatekeeper wetlands govern nutrient pathways in a continental basin.Communications earth & environment · 2026Article
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Headwater non-floodplain wetlands are often overlooked in nutrient-management strategies despite their potential to regulate downstream water quality. Here we test whether headwater non-floodplain wetlands act as nutrient gatekeepers in the Lake Winnipeg Watershed. We define wetlands as seasonally-to-persistently inundated surface-water areas mapped from satellite imagery, and combine multi-decadal observations of wetland inundation and wetland-stream connectivity (1984-2020) with observed annual total nitrogen and total phosphorus loads (1994-2020) and random forest models. Nutrient export is lowest when headwater non-floodplain wetlands remain hydrologically disconnected and increases during episodic reconnection, indicating a threshold-like shift from nutrient storage to export. The ratio of disconnected non-floodplain wetland area is the strongest negative predictor of nutrient delivery, whereas mid/high-order reaches are weaker and less consistent. These results identify intermittently connected headwater non-floodplain wetlands as basin-scale regulators of nutrient pathways and highlight protecting them as a scalable strategy to reduce eutrophication risk in climate-sensitive watersheds.
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