Results 41 to 50 of about 241 (123)
Variability in Trends and Indicators of CO2 Exchange Across Arctic Wetlands
Journal of Geophysical Research: Biogeosciences, Volume 124, Issue 5, Page 1248-1264, May 2019., 2019 Abstract Arctic wetlands store nearly half of the world's soil organic carbon and are crucial to the global carbon cycle. However, most Earth system models fail to account for wetlands given heterogeneity and uncertainty surrounding the response of different wetland types to climate change. We analyzed summer (June–August) carbon dioxide (CO2) exchange,
Megan M. Coffer, Erin L. Hestir
wiley +1 more source
, 2018 Summary of all the weather variables used to analyze the influence of climatic variability on both the calving date and calving synchrony of a semi-domesticated reindeer population for the study area of the Kutuharju field reindeer research station in ...
Amélie Paoli (5142428) +3 more
core +1 more source
Year‐Round δ13C‐CH4 Reveals Seasonal Transition in Methane‐Related Processes in a Boreal Mire
Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 9, September 2025.Abstract While boreal mires are known to be a significant natural source of methane (CH4), the seasonality of the related processes and their controls are still poorly understood. Here we aim to characterize CH4 production, oxidation and transport, and their drivers in a boreal mire using year‐round continuous measurements of stable carbon isotope ...
Xuefei Li +3 more
wiley +1 more source
The Impact of Parametric Uncertainties on Biogeochemistry in the E3SM Land Model
Journal of Advances in Modeling Earth Systems, Volume 10, Issue 2, Page 297-319, February 2018., 2018 Abstract We conduct a global sensitivity analysis (GSA) of the Energy Exascale Earth System Model (E3SM), land model (ELM) to calculate the sensitivity of five key carbon cycle outputs to 68 model parameters. This GSA is conducted by first constructing a Polynomial Chaos (PC) surrogate via new Weighted Iterative Bayesian Compressive Sensing (WIBCS ...
Daniel Ricciuto +2 more
wiley +1 more source
Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 5, May 2025.Abstract Peatlands are important climate change mitigation agents as they store large amounts of carbon (C). Yet, their C sink capacity is vulnerable to environmental changes, which is however uncertain in a changing climate. Here, we examined potential habitat‐specific C accumulation drivers over the past ∼1,000 years, using replicate peat records ...
Hui Zhang +8 more
wiley +1 more source
Sex ratio variation in reindeer Rangifer tarandus: a test of the extrinsic modification hypothesis
Wildlife Biology, Volume 9, Issue 1, Page 29-36, March 2003., 2003 Evolutionary theories based on adaptive modification of maternal investment are generally suggested to explain variation in offspring sex ratios, but general concordance with empirical data is rare. Recently, factors beyond the control of the mother, such as density and climate, were reported to affect offspring sex ratios, and the extrinsic ...
Robert B. Weladji, Øystein Holand
wiley +1 more source
Phenological time lapse images from ground camera MC128 in Kaamanen Peatland (2015-2016)
, 2017 <p>This dataset contains phenological time lapse images from camera Kaamanen Peatland. Camera was mounted at ground view level at location 69.140583;27.269817(N;E, WGS84). Images were taken between 25.03.2015--31.12.2016.<br> Cameras were set
Tanis, Cemal Melih (5213381) +15 more
core +1 more source
Social relationships and reproductive performance in group-living arctic blue foxes
Agricultural and Food Science, 1994 The aim of the present work was to study social relationships and reproductivity in captive arctic blue fox groups of different genetic origin. The social status of the individuals among groups remained constant during autumn and early winter.
Hannu Korhonen, Sakari Alasuutari
doaj +2 more sources
Hoof and foot loads for reindeer (Rangifer tarandus)
Rangifer, 1990 Hoof and foot measurements and body weights were taken from 60 living semi-domesticated reindeer (Rangifer tarandus tarandus L.) (8 female and 13 male calves, 10 young females (age 2 yrs), 9 young males (age 2-3 yrs) and 20 adult hinds) at the Kaamanen ...
Mauri Nieminen
doaj +1 more source
Journal of Geophysical Research: Biogeosciences, Volume 129, Issue 7, July 2024.Abstract Northern peatlands are a globally significant source of methane (CH4), and emissions are projected to increase due to warming and permafrost loss. Understanding the microbial mechanisms behind patterns in CH4 production in peatlands will be key to predicting annual emissions changes, with stable carbon isotopes (δ13C‐CH4) being a powerful tool
McKenzie A. Kuhn +27 more
wiley +1 more source