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27 Results Found

  • Article
  • Open Access
29 Citations
6,656 Views
18 Pages

Spatially Distributed Evaluation of ESA CCI Soil Moisture Products in a Northern Boreal Forest Environment

  • Jaakko Ikonen,
  • Tuomo Smolander,
  • Kimmo Rautiainen,
  • Juval Cohen,
  • Juha Lemmetyinen,
  • Miia Salminen and
  • Jouni Pulliainen

Several previous studies have discussed the challenges in remotely sensed soil moisture retrievals over northern boreal environments. However, very few studies have focused solely on an evaluation of these products specifically over these areas. This...

  • Review
  • Open Access
1 Citations
2,795 Views
18 Pages

The Paradigm Shift of Using Natural Molecules Extracted from Northern Canada to Combat Malaria

  • Alexandra Bourgeois,
  • Juliana Aline Souza Lemos,
  • Stéphanie Roucheray,
  • Audrey Sergerie and
  • Dave Richard

26 June 2024

Parasitic diseases, such as malaria, are an immense burden to many low- and middle-income countries. In 2022, 249 million cases and 608,000 deaths were reported by the World Health Organization for malaria alone. Climate change, conflict, humanitaria...

  • Review
  • Open Access
6 Citations
5,699 Views
14 Pages

Hydrocarbon extraction and exploitation is a global, trillion-dollar industry. However, for decades it has also been known that fossil fuel usage is environmentally detrimental; the burning of hydrocarbons results in climate change, and environmental...

  • Review
  • Open Access
7 Citations
9,005 Views
22 Pages

6 January 2020

Carbohydrate-rich extrafloral nectar (EFN) is produced in nectaries on the leaves, stipules, and stems of plants and provides a significant energy source for ants and other plant mutualists outside of the flowering period. Our review of literature on...

  • Article
  • Open Access
42 Citations
8,703 Views
22 Pages

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 and
  • Rebecca A. Montgomery
  • + 1 author

16 July 2019

Peatlands, which account for approximately 15% of land surface across the arctic and boreal regions of the globe, are experiencing a range of ecological impacts as a result of climate change. Factors that include altered hydrology resulting from drou...

  • Article
  • Open Access
46 Citations
11,149 Views
19 Pages

Potential Trade-Offs Between Nature-Based Tourism and Forestry, a Case Study in Northern Finland

  • Anssi Ahtikoski,
  • Seija Tuulentie,
  • Ville Hallikainen,
  • Vesa Nivala,
  • Eero Vatanen,
  • Liisa Tyrväinen and
  • Hannu Salminen

28 October 2011

Forestry, as a large industry, has significant impacts on the quality of nature-based tourism landscapes in boreal forests. In Finland, the rapid growth of nature-based tourism has expanded outdoor recreation activities from protected areas into timb...

  • Article
  • Open Access
28 Citations
8,080 Views
27 Pages

Detecting European Aspen (Populus tremula L.) in Boreal Forests Using Airborne Hyperspectral and Airborne Laser Scanning Data

  • Arto Viinikka,
  • Pekka Hurskainen,
  • Sarita Keski-Saari,
  • Sonja Kivinen,
  • Topi Tanhuanpää,
  • Janne Mäyrä,
  • Laura Poikolainen,
  • Petteri Vihervaara and
  • Timo Kumpula

13 August 2020

Sustainable forest management increasingly highlights the maintenance of biological diversity and requires up-to-date information on the occurrence and distribution of key ecological features in forest environments. European aspen (Populus tremula L....

  • Article
  • Open Access
12 Citations
4,167 Views
24 Pages

Arctic Greening Caused by Warming Contributes to Compositional Changes of Mycobiota at the Polar Urals

  • Anton G. Shiryaev,
  • Pavel A. Moiseev,
  • Ursula Peintner,
  • Nadezhda M. Devi,
  • Vladimir V. Kukarskih and
  • Vladimir V. Elsakov

6 December 2019

The long-term influence of climate change on spatio-temporal dynamics of the Polar mycobiota was analyzed on the eastern macro slope of the Polar Urals (Sob River valley and Mountain Slantsevaya) over a period of 60 years. The anthropogenic impact is...

  • Article
  • Open Access
24 Citations
10,316 Views
32 Pages

Climate Change, Forest Fires, and Territorial Dynamics in the Amazon Rainforest: An Integrated Analysis for Mitigation Strategies

  • Nathalia Celis,
  • Alejandro Casallas,
  • Ellie Anne Lopez-Barrera,
  • Martina Felician,
  • Massimo De Marchi and
  • Salvatore E. Pappalardo

Recent times have witnessed wildfires causing harm to both ecological communities and urban–rural regions, underscoring the necessity to comprehend wildfire triggers and assess measures for mitigation. This research hones in on Cartagena del Ch...

  • Article
  • Open Access
73 Citations
10,922 Views
17 Pages

22 May 2009

The design, operation, and properties of the Finnish Geodetic Institute Field Goniospectrometer (FIGIFIGO) are presented. FIGIFIGO is a portable instrument for the measurement of surface Bidirectional Reflectance Factor (BRF) for samples with diamete...

  • Review
  • Open Access
6 Citations
3,494 Views
11 Pages

12 January 2021

Intact polar membrane lipids (IPLs) are the building blocks of all cell membranes. There is a wide range of phosphorus-free IPL structures, including amino acid containing IPLs, that can be taxonomically specific. Trimethylornithine membrane lipids (...

  • Article
  • Open Access
10 Citations
2,588 Views
15 Pages

Study on Spatial-Distribution Characteristics Based on Fire-Spot Data in Northern China

  • Yuping Tian,
  • Zechuan Wu,
  • Shaojie Bian,
  • Xiaodi Zhang,
  • Bin Wang and
  • Mingze Li

4 June 2022

Forest fires are an important disturbance in forest ecosystems and can affect the structure and function of forests. These must be mitigated, to eliminate the associated harmful impacts on forests and the environment as well as to have a healthy and...

  • Article
  • Open Access
68 Citations
11,306 Views
24 Pages

14 October 2013

Leaf Area Index (LAI) is an important input variable for forest ecosystem modeling as it is a factor in predicting productivity and biomass, two key aspects of forest health. Current in situ methods of determining LAI are sometimes destructive and ge...

  • Article
  • Open Access
3,693 Views
14 Pages

1 January 2022

Salt marshes and mangroves are currently being affected by rising temperatures. Mangroves thrive below −29° N latitude in Florida, USA, and have a low tolerance for extreme cold events, whereas salt marshes dominate further north. One poten...

  • Article
  • Open Access
11 Citations
3,442 Views
12 Pages

Seasons Influence the Native Gut Microbiome of Lake Trout Salvelinus namaycush

  • Pascale Savard,
  • Tim Fernandes,
  • Amy Dao,
  • Bailey McMeans and
  • Cassandre Sara Lazar

The fish gut microbiome plays an essential role in the host’s development and survival. Environmental factors can shape the gut microbiome and potentially mediate physiological performance. Seasonal environments that experience regular abiotic...

  • Article
  • Open Access
8 Citations
3,449 Views
19 Pages

The sedimentary record of aeolian deposits and geomorphic features of the aeolian landforms of Northern Eurasia contain important information that allows us to better understand the climate and environments of the Late Glacial and Early Holocene peri...

  • Article
  • Open Access
31 Citations
7,207 Views
23 Pages

Fire Regime along Latitudinal Gradients of Continuous to Discontinuous Coniferous Boreal Forests in Eastern Canada

  • Jeanne Portier,
  • Sylvie Gauthier,
  • Alain Leduc,
  • Dominique Arseneault and
  • Yves Bergeron

24 September 2016

Fire is the main disturbance in North American coniferous boreal forests. In Northern Quebec, Canada, where forest management is not allowed, the landscape is gradually constituted of more opened lichen woodlands. Those forests are discontinuous and...

  • Article
  • Open Access
24 Citations
5,930 Views
14 Pages

15 April 2016

Fire is the most common disturbance in northern boreal forests, and large fires are often associated with highly variable burn severities across the burnt area. We studied the understory plant community response to a range of burn severities and pre-...

  • Article
  • Open Access
67 Citations
12,323 Views
21 Pages

Capability of C-Band SAR for Operational Wetland Monitoring at High Latitudes

  • Julia Reschke,
  • Annett Bartsch,
  • Stefan Schlaffer and
  • Dmitry Schepaschenko

1 October 2012

Wetlands store large amounts of carbon, and depending on their status and type, they release specific amounts of methane gas to the atmosphere. The connection between wetland type and methane emission has been investigated in various studies and util...

  • Article
  • Open Access
2 Citations
2,200 Views
15 Pages

7 September 2022

The effects of the present global climate change appear more pronounced in high latitudes and alpine regions. Transitions zones, such as the southern fringe of the boreal region in northern Mongolia, are expected to experience drastic changes as a re...

  • Article
  • Open Access
23 Citations
5,658 Views
22 Pages

Evaluation of SMAP Freeze/Thaw Retrieval Accuracy at Core Validation Sites in the Contiguous United States

  • Simon Kraatz,
  • Jennifer M. Jacobs,
  • Ronny Schröder,
  • Eunsang Cho,
  • Michael Cosh,
  • Mark Seyfried,
  • John Prueger and
  • Stan Livingston

17 September 2018

Seasonal freeze-thaw (FT) impacts much of the northern hemisphere and is an important control on its water, energy, and carbon cycle. Although FT in natural environments extends south of 45°N, FT studies using the L-band have so far been restrict...

  • Technical Note
  • Open Access
9 Citations
3,681 Views
12 Pages

30 June 2021

Daily Normalized Difference Vegetation Index (NDVI) values from the MODIS Aqua and Terra satellites were compared with on-the-ground camera observations at five locations in northern Alaska. Over half of the spring rise in NDVI was due to the transit...

  • Article
  • Open Access
1 Citations
2,429 Views
20 Pages

A Comparative Study of Climatology, Energy and Mass Exchange in Two Forests on Contrasting Habitats in Central Siberia: Permafrost Larix gmelinii vs. Permafrost-Free Pinus sylvestris

  • Nadezhda M. Tchebakova,
  • Viacheslav I. Zyryanov,
  • Olga A. Zyryanova,
  • Elena I. Parfenova,
  • Takuya Kajimoto and
  • Yojiro Matsuura

9 February 2023

Inter-annual and seasonal variations of energy, vapor water, and carbon fluxes and associated climate variables in a middle taiga pine (Pinus sylvestris) forest on sandy soils and in a northern taiga larch (Larix gmelinii) forest on permafrost in cen...

  • Article
  • Open Access
30 Citations
10,368 Views
29 Pages

Low Cost and Compact FMCW 24 GHz Radar Applications for Snowpack and Ice Thickness Measurements

  • Patrick Pomerleau,
  • Alain Royer,
  • Alexandre Langlois,
  • Patrick Cliche,
  • Bruno Courtemanche,
  • Jean-Benoît Madore,
  • Ghislain Picard and
  • Éric Lefebvre

14 July 2020

Monitoring the evolution of snow on the ground and lake ice—two of the most important components of the changing northern environment—is essential. In this paper, we describe a lightweight, compact and autonomous 24 GHz frequency-modulate...

  • Article
  • Open Access
1 Citations
1,750 Views
15 Pages

Carbon Accounting of Weihe CSA Pilot Demonstration Area in Longjiang Forest Industry

  • Kexin Ma,
  • Meiyun Geng,
  • Lidong Han,
  • Qingfang Sun,
  • Leihao Zhang,
  • Zekai Yang,
  • Yue Tang,
  • Sihan Guo,
  • Yufei Xiao and
  • Xiaotang Wo
  • + 1 author

18 April 2023

Carbon sink afforestation (CSA) has become one of the most concerned issues of countries around the world under the background of climate change. The northern forest ecosystem, located in mid- and high latitudes, is a huge terrestrial carbon pool and...

  • Article
  • Open Access
15 Citations
5,812 Views
36 Pages

Evaluating Carbon Monoxide and Aerosol Optical Depth Simulations from CAM-Chem Using Satellite Observations

  • Débora Souza Alvim,
  • Júlio Barboza Chiquetto,
  • Monica Tais Siqueira D’Amelio,
  • Bushra Khalid,
  • Dirceu Luis Herdies,
  • Jayant Pendharkar,
  • Sergio Machado Corrêa,
  • Silvio Nilo Figueroa,
  • Ariane Frassoni and
  • Paulo Nobre
  • + 3 authors

7 June 2021

The scope of this work was to evaluate simulated carbon monoxide (CO) and aerosol optical depth (AOD) from the CAM-chem model against observed satellite data and additionally explore the empirical relationship of CO, AOD and fire radiative power (FRP...

  • Review
  • Open Access
2 Citations
2,643 Views
9 Pages

19 April 2024

Mercury (Hg) is a pollutant that bioaccumulates in the food web, leading to health issues in humans and other fauna. Although anthropogenic Hg deposition has decreased over the past 20 years, our watersheds continue to be sources of Hg to downstream...