Variation in Soil CO2 Fluxes across Land Cover Mosaic in Typical Tundra of the Taimyr Peninsula, Siberia DOI Creative Commons
A. V. Panov, Anatoly Prokushkin, Mikhail Korets

et al.

Atmosphere, Journal Year: 2024, Volume and Issue: 15(6), P. 698 - 698

Published: June 9, 2024

Increased warming in the Arctic is of great concern. This particularly due to permafrost degradation, which expected accelerate microbial breakdown soil organic carbon, with its further release into atmosphere as carbon dioxide (CO2). The fine-scale variability CO2 fluxes across highly mosaic tundra landscapes can provide us insights diverse responses individual plant communities environmental change. In paper, we contribute filling existing gaps by investigating flux rates within different landscape units for dominant vegetation and species typical southern part Taimyr Peninsula, Siberia. general, illustrates a four-fold increase from non-vascular vegetation, mainly lichens mosses (1.05 ± 0.36 µmol m−2 s−1), towards vascular plants (3.59 0.51 s−1). Barren ground (“frost boils”) shows lowest value 0.79 0.21 s−1, while considering “browning” phenomenon, substantial be shrub expansion. Given high correlation top temperature, well-drained relatively dry habitats such barren are most sensitive observed projected temperature growth Arctic. For mixed that favor wetter conditions, moisture appears play greater role. Based on modeled seasonal pattern precipitation records, applying rainfall simulations situ outlined role enhanced emissions (i.e., “Birch” effect). We found pulse-like fluxes, first few minutes after vegetated plots, reaches 0.99 0.48 s−1 per each 1 mm precipitation, 55–70% inhibition emission during several hours. An average additive effect may achieve 7–12% over entire growing season, increased regime strengthen total surface season.

Language: Английский

Microclimate, an important part of ecology and biogeography DOI Creative Commons
Julia Kemppinen, Jonas J. Lembrechts, Koenraad Van Meerbeek

et al.

Global Ecology and Biogeography, Journal Year: 2024, Volume and Issue: 33(6)

Published: April 8, 2024

Abstract Brief introduction: What are microclimates and why they important? Microclimate science has developed into a global discipline. is increasingly used to understand mitigate climate biodiversity shifts. Here, we provide an overview of the current status microclimate ecology biogeography in terrestrial ecosystems, where this field heading next. investigations We highlight latest research on interactions between organisms, including how influence individuals, through them populations, communities entire ecosystems their processes. also briefly discuss recent organisms shape from tropics poles. applications ecosystem management Microclimates important under change. showcase new with examples conservation, forestry urban ecology. importance microrefugia conservation promote heterogeneity. Methods for advances data acquisition, such as novel sensors remote sensing methods. modelling, mapping processing, accessibility modelling tools, advantages mechanistic statistical solutions computational challenges that have pushed state‐of‐the‐art field. What's next? identify major knowledge gaps need be filled further advancing investigations, These include spatiotemporal scaling data, mismatches macroclimate predicting responses change, more evidence outcomes management.

Language: Английский

Citations

43
Remote sensing of vegetation trends: A review of methodological choices and sources of uncertainty DOI Creative Commons
Hamid Darabi, Ali Torabi Haghighi, Bjørn Kløve

et al.

Remote Sensing Applications Society and Environment, Journal Year: 2025, Volume and Issue: unknown, P. 101500 - 101500

Published: Feb. 1, 2025

Language: Английский

Citations

1
The significant role of vegetation activity in regulating wetland methane emission in China DOI

Boming Liang,

Yuanyuan Hao, Zhuangsheng Tang

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: 268, P. 120773 - 120773

Published: Jan. 4, 2025

Language: Английский

Citations

0
Discovery of Eremiobacterota with nifH homologues in tundra soil DOI Creative Commons
Igor Stelmach Pessi, Tom O. Delmont, Jonathan P. Zehr

et al.

Environmental Microbiology Reports, Journal Year: 2024, Volume and Issue: 16(3)

Published: June 1, 2024

Abstract We describe the genome of an Eremiobacterota population from tundra soil that contains minimal set nif genes needed to fix atmospheric N 2 . This putative diazotroph population, which we name Candidatus Lamibacter sapmiensis, links for first time and fixation. The integrity its are well supported by both environmental taxonomic signals. Ca. sapmiensis three nifH homologues complementary nifDKENB assemble a functional nitrogenase. diazotrophic role is presence regulate fixation other involved in downstream processes such as ammonia assimilation. Similar Eremiobacterota, encodes potential chemosynthesis via CO coupled with H oxidation. Interestingly, O reductase indicates this could play sink soils. Due lack activity data, it remains uncertain if able nitrogenase participate Confirmation ability would be testament great metabolic versatility appears underlie their ecological success cold oligotrophic environments.

Language: Английский

Citations

2
Variation in Soil CO2 Fluxes across Land Cover Mosaic in Typical Tundra of the Taimyr Peninsula, Siberia DOI Creative Commons
A. V. Panov, Anatoly Prokushkin, Mikhail Korets

et al.

Atmosphere, Journal Year: 2024, Volume and Issue: 15(6), P. 698 - 698

Published: June 9, 2024

Increased warming in the Arctic is of great concern. This particularly due to permafrost degradation, which expected accelerate microbial breakdown soil organic carbon, with its further release into atmosphere as carbon dioxide (CO2). The fine-scale variability CO2 fluxes across highly mosaic tundra landscapes can provide us insights diverse responses individual plant communities environmental change. In paper, we contribute filling existing gaps by investigating flux rates within different landscape units for dominant vegetation and species typical southern part Taimyr Peninsula, Siberia. general, illustrates a four-fold increase from non-vascular vegetation, mainly lichens mosses (1.05 ± 0.36 µmol m−2 s−1), towards vascular plants (3.59 0.51 s−1). Barren ground (“frost boils”) shows lowest value 0.79 0.21 s−1, while considering “browning” phenomenon, substantial be shrub expansion. Given high correlation top temperature, well-drained relatively dry habitats such barren are most sensitive observed projected temperature growth Arctic. For mixed that favor wetter conditions, moisture appears play greater role. Based on modeled seasonal pattern precipitation records, applying rainfall simulations situ outlined role enhanced emissions (i.e., “Birch” effect). We found pulse-like fluxes, first few minutes after vegetated plots, reaches 0.99 0.48 s−1 per each 1 mm precipitation, 55–70% inhibition emission during several hours. An average additive effect may achieve 7–12% over entire growing season, increased regime strengthen total surface season.

Language: Английский

Citations

1