Wetland biomass responses to experimental flooding and warming, Yukon-Kuskokwim Delta (Western Alaska, USA), 2022-2023 ...

This dataset was used to answer the question: to what extent do flooding and warming alter plant-community structure in the high-latitude coastal wetlands of the Yukon-Kuskokwim (Y-K) Delta (Western Alaska, USA)? Over two years, we simulated periodic summer tidal flood events at two severity levels...

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Bibliographic Details
Main Authors: Petit Bon, Matteo, Beard, Karen H., Leffler, A. Joshua, Kelsey, Katharine C.
Format: Dataset
Language:English
Published: NSF Arctic Data Center 2024
Subjects:
Aboveground biomass
Belowground biomass
Alaska
Arctic tundra
Plant functional group PFG
Roots
Tidal floods
Yukon-Kuskokwim Y-K Delta
Point intercept method PIM
Graminoids
Shrubs
Forbs
Arctic
The ''Y''
Yukon
Kuskokwim
Tundra
Online Access:https://dx.doi.org/10.18739/a2k93180p
https://arcticdata.io/catalog/view/doi:10.18739/A2K93180P
Description
Summary:This dataset was used to answer the question: to what extent do flooding and warming alter plant-community structure in the high-latitude coastal wetlands of the Yukon-Kuskokwim (Y-K) Delta (Western Alaska, USA)? Over two years, we simulated periodic summer tidal flood events at two severity levels and passively increased summer temperatures in a full-factorial field experiment, and measured alterations in aboveground plant functional group (PFG) biomass and composition. We simulated low-severity and high-severity flooding to represent near-future flooding regimes for the Y-K Delta, projected respectively in the next ~5 and ~10 years. The experiment was established in a wet sedge-shrub meadow, an ecotype covering greater than 10% of the vegetated area of the central coast of the Y-K Delta. We characterized aboveground plant-community structure using the point intercept frequency (PIM) methodology. We clumped vascular plant species into five broad PFGs: graminoids, deciduous and evergreen shrubs, forbs, and ...

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