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### Access Dataset can be accessed and downloaded from the directory via: [http://arcticdata.io/data/10.18739/A2599Z39H](http://arcticdata.io/data/10.18739/A2599Z39H). ### Overview This dataset contains raw sedimentary ancient DNA (sedaDNA) sequence data and associated metadata generated from a 3-meter sediment core collected from Andy Lake, Alaska. The core was obtained during fieldwork supported by the National Science Foundation (NSF) Arctic Doctoral Dissertation Research Improvement Grant #2230019, titled Assessing the impacts of Pleistocene megaherbivores on vegetation stability and resilience in the Arctic, awarded to Principal Investigator (PI) Jacquelyn L. Gill and Co-PI Alessandro Mereghetti. The primary objective of this project is to investigate how Pleistocene megafaunal diversity influenced long-term plant community dynamics and ecosystem resilience in Arctic environments. These data contribute to understanding ecological baselines and biotic responses to past climate and extinction events, with implications for modern conservation and rewilding strategies.
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Multispectral and RGB Uncrewed Aerial Vehicle imagery for several sites in interior Alaska in 2024
### Access Dataset can be accessed and downloaded from the directory via: [http://arcticdata.io/data/10.18739/A2736M42V](http://arcticdata.io/data/10.18739/A2736M42V). ### Overview This data set includes imagery collected using Uncrewed Aerial Vehicles (UAV, i.e. drones) for a series of research sites in interior Alaska with the objective of mapping the distribution of individual plants (e.g. Eriophorum vaginatum tussocks) and other similarly sized ecosystem components. Data was collected in the summer of 2024 using a DJI Mavic 3 Enterprise quadcopter with integrated multispectral and rgb sensors. The majority of the imagery focuses on study sites within the National Ecological Observatory Network (NEON) site near Healy, Alaska. The data set also includes a small amount of ground truth data on tussock dimensions for these sites. Additional images include a series of riparian corridors with beaver wetlands along the Denali and Steese Highways.
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- Award ID(s):
- 2321530
- PAR ID:
- 10599393
- Publisher / Repository:
- NSF Arctic Data Center
- Date Published:
- Subject(s) / Keyword(s):
- NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI) ARCTIC TUNDRA BOREAL FOREST/TIAGA ECOLOGICAL DYNAMICS
- Format(s):
- Medium: X Other: text/xml
- Sponsoring Org:
- National Science Foundation
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