Ashley P Ballantyne
Biographic Data
| ID | 6822030 |
|---|---|
| NAME | Ashley P Ballantyne |
| GIVEN NAMES | Ashley P |
| FAMILY NAME | Ballantyne |
| SIGNATURE | BALLANTYNE A P |
| AFFILIATIONS | University of Montana |
| ORCID | 0000-0003-1532-5126 |
| VERIFIED | Yes |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 9 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2007 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 0 |
Warming of northern peatlands increases the global temperature overshoot challenge
Widespread deepening of the active layer in northern permafrost regions from 2003 to 2020
The changing thermal state of permafrost is an important indicator of climate change in northern high latitude ecosystems. The seasonally thawed soil active layer thickness (ALT) overlying permafrost may be deepening as a consequence of enhanced polar warming and widespread permafrost thaw in northern permafrost regions (NPRs). The associated increase in ALT may have cascading effects on ecological and hydrological processes that impact climate f…
A strong mitigation scenario maintains climate neutrality of northern peatlands
Global synthesis for the scaling of soil microbial nitrogen to phosphorus in terrestrial ecosystems
Nitrogen (N) and phosphorus (P) are associated with the life history of all organisms. Soil microbes play essential roles in nutrient cycling and ecosystem dynamics. As compared to plants, however, our understanding of the soil microbial N versus P scaling relationship remains limited. In this study, we used a comprehensive dataset comprising 2210 observations from 422 sites worldwide to examine microbial C, N, and P concentrations and C:N:P rati…
The influence of hydroclimate and management on forest regrowth across the western U.S
Forests are subject to a range of management practices but it is unclear which produce the most rapid rates of regrowth across heterogeneous moisture gradients produced by regional climate and complex terrain. We analyzed recovery rates of satellite derived net primary productivity (NPP) over 27 years for 26 069 individual silvicultural treatments (stands) across the western U.S. at a 30 m resolution. Rates of NPP recovery and forest regrowth wer…
Siberian 2020 heatwave increased spring CO 2 uptake but not annual CO 2 uptake
Siberia experienced an unprecedented strong and persistent heatwave in winter to spring of 2020. Using bottom–up and top–down approaches, we evaluated seasonal and annual CO 2 fluxes of 2020 in the northern hemisphere (north of 30 °N), focusing on Siberia where the pronounced heatwave occurred. We found that, over Siberia, CO 2 respiration loss in response to the pronounced positive winter temperature anomaly was greater than in previous years. H…
Below-surface water mediates the response of African forests to reduced rainfall
Terrestrial ecosystem gross primary productivity (GPP) is the largest land-atmosphere carbon flux and the primary mechanism of photosynthetic fixation of atmospheric CO 2 into plant biomass. Anomalous rainfall events have been shown to have a great impact on the global carbon cycle. However, less is known about the impact of these events on GPP, especially in Africa, where in situ observations are sparse. Here, we use a suite of satellite and oth…
Coarse woody debris are buffering mortality-induced carbon losses to the atmosphere in tropical forests
Quaternary glaciation and hydrologic variation in the South American tropics as reconstructed from the Lake Titicaca drilling project
A 136-m-long drill core of sediments was recovered from tropical high-altitude Lake Titicaca, Bolivia-Peru, enabling a reconstruction of past climate that spans four cycles of regional glacial advance and retreat and that is estimated to extend continuously over the last 370,000 yr. Within the errors of the age model, the periods of regional glacial advance and retreat are concordant respectively with global glacial and interglacial stages. Perio…
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Quaternary glaciation and hydrologic variation in the South American tropics as reconstructed from the Lake Titicaca drilling project
A 136-m-long drill core of sediments was recovered from tropical high-altitude Lake Titicaca, Bolivia-Peru, enabling a reconstruction of past climate that spans four cycles of regional glacial advance and retreat and that is estimated to extend continuously over the last 370,000 yr. Within the errors of the age model, the periods of regional glacial advance and retreat are concordant respectively with global glacial and interglacial stages. Perio…
Below-surface water mediates the response of African forests to reduced rainfall
Terrestrial ecosystem gross primary productivity (GPP) is the largest land-atmosphere carbon flux and the primary mechanism of photosynthetic fixation of atmospheric CO 2 into plant biomass. Anomalous rainfall events have been shown to have a great impact on the global carbon cycle. However, less is known about the impact of these events on GPP, especially in Africa, where in situ observations are sparse. Here, we use a suite of satellite and oth…
Coarse woody debris are buffering mortality-induced carbon losses to the atmosphere in tropical forests
Global synthesis for the scaling of soil microbial nitrogen to phosphorus in terrestrial ecosystems
Nitrogen (N) and phosphorus (P) are associated with the life history of all organisms. Soil microbes play essential roles in nutrient cycling and ecosystem dynamics. As compared to plants, however, our understanding of the soil microbial N versus P scaling relationship remains limited. In this study, we used a comprehensive dataset comprising 2210 observations from 422 sites worldwide to examine microbial C, N, and P concentrations and C:N:P rati…
The influence of hydroclimate and management on forest regrowth across the western U.S
Forests are subject to a range of management practices but it is unclear which produce the most rapid rates of regrowth across heterogeneous moisture gradients produced by regional climate and complex terrain. We analyzed recovery rates of satellite derived net primary productivity (NPP) over 27 years for 26 069 individual silvicultural treatments (stands) across the western U.S. at a 30 m resolution. Rates of NPP recovery and forest regrowth wer…
Siberian 2020 heatwave increased spring CO 2 uptake but not annual CO 2 uptake
Siberia experienced an unprecedented strong and persistent heatwave in winter to spring of 2020. Using bottom–up and top–down approaches, we evaluated seasonal and annual CO 2 fluxes of 2020 in the northern hemisphere (north of 30 °N), focusing on Siberia where the pronounced heatwave occurred. We found that, over Siberia, CO 2 respiration loss in response to the pronounced positive winter temperature anomaly was greater than in previous years. H…
A strong mitigation scenario maintains climate neutrality of northern peatlands
Widespread deepening of the active layer in northern permafrost regions from 2003 to 2020
The changing thermal state of permafrost is an important indicator of climate change in northern high latitude ecosystems. The seasonally thawed soil active layer thickness (ALT) overlying permafrost may be deepening as a consequence of enhanced polar warming and widespread permafrost thaw in northern permafrost regions (NPRs). The associated increase in ALT may have cascading effects on ecological and hydrological processes that impact climate f…
Warming of northern peatlands increases the global temperature overshoot challenge
Environmental Science (8 works) · Geography (8 works) · Atmospheric sciences (7 works) · Geology (7 works) · Climatology (5 works) · Ecology (5 works) · Physical geography (5 works) · Climate change (4 works) · Biology (3 works) · Climate change and permafrost (3 works)