Swan Lake Creek Study Reach Datasets - beaver dams, flowlines, and UAS imagery; Seward Peninsula, Alaska; 2006-2021 ...

Beavers have established themselves as a key component of low arctic ecosystems over the past several decades. The data presented here document the occurrence, reconstruct the timing, and highlight the effects of beaver activity on a small creek valley confined by ice-rich permafrost on the Seward P...

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Bibliographic Details
Main Authors: Jones, Benjamin, Tape, Ken, Clark, Jason, Bondurant, Allen, Ward Jones, Melissa, Gaglioti, Benjamin, Elder, Clayton, Witharana, Chandi, Miller, Charles
Format: Dataset
Language:English
Published: NSF Arctic Data Center 2021
Subjects:
Arctic
Beavers
Geomorphology
Permafrost
Remote Sensing
Thermokarst
Tundra
Ice
permafrost
Seward Peninsula
Alaska
Online Access:https://dx.doi.org/10.18739/a2pk0732f
https://arcticdata.io/catalog/view/doi:10.18739/A2PK0732F
Description
Summary:Beavers have established themselves as a key component of low arctic ecosystems over the past several decades. The data presented here document the occurrence, reconstruct the timing, and highlight the effects of beaver activity on a small creek valley confined by ice-rich permafrost on the Seward Peninsula, Alaska. We analyzed very high resolution satellite imagery to digitize beaver dams and stream channels from the years 2006, 2011, 2014, 2015, 2017, 2019, 2020, and 2021. We also acquired Uncrewed Aircract System (UAS) imagery on 06 August 2021 and created a 5 centimeter (cm) resolution orthophoto mosaic and a 15 cm resolution digital surface model. Our data show that beaver engineering between 2006 and 2021 caused a systems-level response to a small tundra stream that promoted lateral expansion of the creek valley into an ice-rich permafrost hillslope and development of a diffuse network of stream channels expanding the area of potential beaver engineering in the future. The datasets support the findings ...

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