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Ground-Based Hyperspectral Characterization of Alaska Tundra Vegetation along Environmental Gradients

Marcel Buchhorn, Donald Walker, Birgit Heim, Martha Raynolds, Howard Epstein, Marcel Schwieder
2013 Remote Sensing  
The aim of this paper is ground-based hyperspectral characterization of Low Arctic Alaskan tundra communities along four environmental gradients (regional climate, soil pH, toposequence, and soil moisture  ...  (iv) MAT and MNT plant community separation via narrowband Normalized Difference Vegetation Index (NDVI) shows the potential of hyperspectral remote sensing applications in the tundra.  ...  This work is part of the hy-ARK-VEG (hyperspectral method development for ARCtic VEGetation biomes) project sponsored by the German research center for aeronautics and space (DLR) and funded by the German  ... 
doi:10.3390/rs5083971 fatcat:jurwm2o7xjf3tgvwfgntusdmeu

Relationships between hyperspectral data and components of vegetation biomass in Low Arctic tundra communities at Ivotuk, Alaska

Sara Bratsch, Howard Epstein, Marcel Buchhorn, Donald Walker, Heather Landes
2017 Environmental Research Letters  
, Alaska using field spectroscopy Remote Sens. 8 51 Buchhorn M et al 2013 Ground-based hyperspectral characterization of Alaska tundra vegetation along environmental gradients Remote Sens. 5 3971-4005  ...  Tundra plant above-ground biomass and shrub dominance mapped across the North Slope of Alaska Logan T Berner, Patrick Jantz, Ken D Tape et al.  ... 
doi:10.1088/1748-9326/aa572e fatcat:mvtramwhf5ezrjraajktqmho4m

Influence of BRDF on NDVI and biomass estimations of Alaska Arctic tundra

Marcel Buchhorn, Martha K Raynolds, Donald A Walker
2016 Environmental Research Letters  
We examined the effects of these different variables on five studies that estimated above-ground tundra biomass of two common arctic vegetation types that dominate the Alaska tundra, moist acidic tussock  ...  Researchers have found that the normalized difference vegetation index (NDVI) correlates well with biomass sampled on the ground.  ...  Acknowledgments Field work was carried out within the framework of a US-German expedition in summer 2012, and part of the hy-ARK-VEG (hyperspectral method development for ARCtic VEGetation biomes) project  ... 
doi:10.1088/1748-9326/11/12/125002 fatcat:4ymttm6qfzdxtn7omws4xtt2he

Focus on recent, present and future Arctic and boreal productivity and biomass changes

Hans Tømmervik, Bruce C Forbes
2020 Environmental Research Letters  
These mechanisms include former human interactions (legacies) and drivers that control such changes (both greening and browning), along with consequences for local, regional and global scale processes.  ...  The reduction of cold temperature constraints on photosynthesis in recent decades has led to extended growing seasons and increased plant productivity (greening) in significant parts of Polar, Arctic and  ...  BCF was also supported by Academy of Finland projects RISES (no. 256991) and  ... 
doi:10.1088/1748-9326/ab79e3 fatcat:d7h4i5w3sjhtlosv3tlhaxvtvq

Characterizing Boreal Peatland Plant Composition and Species Diversity with Hyperspectral Remote Sensing

Mara Y. McPartland, Michael J. Falkowski, Jason R. Reinhardt, Evan S. Kane, Randy Kolka, Merritt R. Turetsky, Thomas A. Douglas, John Anderson, Jarrod D. Edwards, Brian Palik, Rebecca A. Montgomery
2019 Remote Sensing  
We used hyperspectral remote sensing to characterize the response of boreal peatland plant composition and species diversity to warming, hydrologic change, and elevated CO2.  ...  Based on the results of our field study, we performed a supervised land cover classification analysis on an aerial hyperspectral dataset to map peatland plant functional types (PFTs) across an area encompassing  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs11141685 fatcat:3usxwfzd5zd5zahgmclchailam

Recent trends and remaining challenges for optical remote sensing of Arctic tundra vegetation: A review and outlook

Alison Beamish, Martha K. Raynolds, Howard Epstein, Gerald V. Frost, Matthew J. Macander, Helena Bergstedt, Annett Bartsch, Stefan Kruse, Victoria Miles, Cemal Melih Tanis, Birgit Heim, Matthias Fuchs (+4 others)
2020 Remote Sensing of Environment  
The first are issues related to environmental controls including disturbance, hydrology, plant functional types, phenology and the tundra-taiga ecotone, and understanding their influence on interpretation  ...  These efforts are necessary to generate high quality, temporally dense datasets for identifying trends in Arctic tundra vegetation.  ...  Acknowledgements The authors would like to thank all participants of the 15th annual International Circumpolar Remote Sensing Symposium Arctic Vegetation Workshop for their valuable contributions, which  ... 
doi:10.1016/j.rse.2020.111872 fatcat:gpprd3is7ff33fhtuh4go7nu44

A Multi-Sensor Unoccupied Aerial System Improves Characterization of Vegetation Composition and Canopy Properties in the Arctic Tundra

Dedi Yang, Ran Meng, Bailey D. Morrison, Andrew McMahon, Wouter Hantson, Daniel J. Hayes, Amy L. Breen, Verity G. Salmon, Shawn P. Serbin
2020 Remote Sensing  
We present a case study demonstrating the processing and application of Osprey data products for characterizing the key biophysical properties of tundra vegetation canopies.  ...  Therefore, the development and deployment of the Osprey UAS, as a state-of-the-art methodology, has the potential to be widely used for characterizing tundra vegetation composition and canopy properties  ...  Using a case study from a low Arctic tundra site in Western Alaska, we showed that our platform provides an efficient means for accurate mapping of tundra vegetation as well as for characterizing canopy-scale  ... 
doi:10.3390/rs12162638 fatcat:sxmx2i3xu5b7bkhtqsykkh56eq

Predicting aboveground biomass in Arctic landscapes using very high spatial resolution satellite imagery and field sampling

Aleksi Räsänen, Sari Juutinen, Mika Aurela, Tarmo Virtanen
2018 International Journal of Remote Sensing  
Overall, the usage of VHSR images creates new possibilities but 44 to utilize them to full potential requires similarly more detailed in-situ data 45 related to biomass inventories and other ecosystem  ...  "Ground-based hyperspectral characterization of Alaska 558 tundra vegetation along environmental gradients." Remote Sensing 5 (8):3971- 559 4005. doi: 10.3390/rs5083971. 560 Burn, C. R. 2012.  ...  "Relationships 547 between hyperspectral data and components of vegetation biomass in Low 548 Arctic tundra communities at Ivotuk, Alaska."  ... 
doi:10.1080/01431161.2018.1524176 fatcat:kvutfxz2mncgja5g47g3swqfbq

Overview: Integrative and Comprehensive Understanding on Polar Environments (iCUPE) – concept and initial results

Tuukka Petäjä, Ella-Maria Duplissy, Ksenia Tabakova, Julia Schmale, Barbara Altstädter, Gerard Ancellet, Mikhail Arshinov, Yurii Balin, Urs Baltensperger, Jens Bange, Alison Beamish, Boris Belan (+60 others)
2020 Atmospheric Chemistry and Physics  
The iCUPE work consists of thematic state-of-the-art research and the provision of novel data in atmospheric pollution, local sources and transboundary transport, the characterization of arctic surfaces  ...  multi-scale modeling to synthesize data from comprehensive long-term measurements, intensive campaigns, and satellites to deliver data products, metrics, and indicators to stakeholders concerning the environmental  ...  As a first step to improve the estimation and monitoring of Arctic tundra vegetation, we conducted a detailed spectral characterization of dominant vegetation communities at Toolik Lake, Alaska, with the  ... 
doi:10.5194/acp-20-8551-2020 fatcat:g2smd6jovnbtne2nntccpexz6u

Satellite-based evidence for shrub and graminoid tundra expansion in northern Quebec from 1986 to 2010

kelly M. McManus, Douglas C. Morton, Jeffrey G. Masek, Dongdong Wang, Joseph O. Sexton, Jyoteshwar R. Nagol, Pascale Ropars, Stéphane Boudreau
2012 Global Change Biology  
26 Global vegetation models predict rapid poleward migration of tundra and boreal forest vegetation 27 in response to climate warming.  ...  The average NDVI trend (0.007/yr) 39 corresponds to a leaf-area index (LAI) increase of ~0.6 based on the regional relationship 40 between LAI and NDVI from the Moderate Resolution Spectroradiometer (MODIS  ...  The addition of hyperspectral imagery (to map compositional 404 gradients) and LiDAR(to map structure) would provide a more comprehensive benchmark of 405 current conditions for future studies of climate-driven  ... 
doi:10.1111/j.1365-2486.2012.02708.x fatcat:jd3fzz3irnas7jsq2icjftware

Vulnerability of high-latitude soil organic carbon in North America to disturbance

Guido Grosse, Jennifer Harden, Merritt Turetsky, A. David McGuire, Philip Camill, Charles Tarnocai, Steve Frolking, Edward A. G. Schuur, Torre Jorgenson, Sergei Marchenko, Vladimir Romanovsky, Kimberly P. Wickland (+4 others)
2011 Journal of Geophysical Research  
Press disturbances of relatively slow but persistent nature such as top-down thawing of permafrost, and changes in hydrology, microbiological communities, pedological processes, and vegetation types, as  ...  We address key factors (permafrost, vegetation, hydrology, paleoenvironmental history) and processes (C input, storage, decomposition, and output) responsible for the formation of the large high-latitude  ...  Ping et al. [2008a] also found that cryoturbation increased along a north to south warming gradient in Alaska.  ... 
doi:10.1029/2010jg001507 fatcat:kbbg5hhg2bchto4fec2xcawisi

Can C-band synthetic aperture radar be used to estimate soil organic carbon storage in tundra?

Annett Bartsch, Barbara Widhalm, Peter Kuhry, Gustaf Hugelius, Juri Palmtag, Matthias Benjamin Siewert
2016 Biogeosciences  
</strong> A new approach for the estimation of soil organic carbon (SOC) pools north of the tree line has been developed based on synthetic aperture radar (SAR; ENVISAT Advanced SAR Global Monitoring mode  ...  It can be shown that measurements in C band under frozen conditions represent vegetation and surface structure properties which relate to soil properties, specifically SOC.  ...  The Kytalyk soil organic carbon inventory was conducted with support of the above-mentioned EU PAGE21 project; Arymas and Shalaurovo soil sampling and analyses were possible through the financial support  ... 
doi:10.5194/bg-13-5453-2016 fatcat:l7omj6jxm5bgtknervypnfj434

Reviews and syntheses: Arctic fire regimes and emissions in the 21st century

Jessica L. McCarty, Juha Aalto, Ville-Veikko Paunu, Steve R. Arnold, Sabine Eckhardt, Zbigniew Klimont, Justin J. Fain, Nikolaos Evangeliou, Ari Venäläinen, Nadezhda M. Tchebakova, Elena I. Parfenova, Kaarle Kupiainen (+3 others)
2021 Biogeosciences  
) Climate change is expected to make Arctic fires more likely by increasing the likelihood of extreme fire weather, increased lightning activity, and drier vegetative and ground fuel conditions. (3) To  ...  some extent, shifting agricultural land use and forest transitions from forest–steppe to steppe, tundra to taiga, and coniferous to deciduous in a warmer climate may increase and decrease open biomass  ...  Privately owned grassy tussock tundra and dwarf shrub tundra vegetation types are more likely to burn than low shrub tundra in Alaska (Hu et al., 2015) , with relatively rapid vegetation re-greening within  ... 
doi:10.5194/bg-18-5053-2021 fatcat:gilnyxnrzbcabidrieo3d5xxz4

Five years of land surface phenology in a large-scale flooding and draining manipulation in a coastal Arctic ecosystem [article]

Santonu Goswami, John A. Gamon, Sergio Vargas, Craig E. Tweedie
2017 bioRxiv   pre-print
Hyperspectral reflectance data were collected in the visible to near IR region of the spectrum using a robotic tram system that operated along a 300m transects during the snow free growing period between  ...  to ground level.  ...  properties using these ground based methods.  ... 
doi:10.1101/146662 fatcat:rpjqcdpahzhhfkdr3frhdcjnqq

Methane in Zackenberg Valley, NE Greenland: multidecadal growing season fluxes of a high-Arctic tundra

Johan H. Scheller, Mikhail Mastepanov, Hanne H. Christiansen, Torben R. Christensen
2021 Biogeosciences  
on the most common vegetation types in the valley to estimate the landscape fluxes over 14 years.  ...  Methane fluxes based on manual chamber measurements are available from campaigns in 1997, 1999–2000, and in shorter periods from 2007–2013 and were summarized in several published studies.  ...  This study was supported by the Faculty of Science and Technology and the thematic centers iCLIMATE and ARC at Aarhus University.  ... 
doi:10.5194/bg-18-6093-2021 fatcat:3omdecj7rfdw5ayl4yzph4egbq
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