Julia A. Klein
A5083034663- Ecology and Vegetation Dynamics Studies
- Rangeland Management and Livestock Ecology
- Cryospheric studies and observations
- Climate change and permafrost
- Geology and Paleoclimatology Research
- Species Distribution and Climate Change
- Rangeland and Wildlife Management
- Plant and animal studies
- Plant Water Relations and Carbon Dynamics
- Land Use and Ecosystem Services
- Sustainability and Climate Change Governance
- Climate change impacts on agriculture
- Soil Carbon and Nitrogen Dynamics
- Tree-ring climate responses
- Conservation, Biodiversity, and Resource Management
- Peatlands and Wetlands Ecology
- Animal Ecology and Behavior Studies
- Climate variability and models
- Workplace Health and Well-being
- Plant Ecology and Soil Science
- Climate Change, Adaptation, Migration
- Wildlife Ecology and Conservation
- Landslides and related hazards
- Winter Sports Injuries and Performance
- Forest, Soil, and Plant Ecology in China
Colorado State University
2015-2025
Wissenschaftliches Institut der AOK
2020-2021
Ecological Society of America
2020
Yahoo (United Kingdom)
2010
SOAS University of London
2009
University of California, Berkeley
2004-2007
La Trobe University
2006
Pacific Northwest Research Station
2006
University of British Columbia
2006
Grand Valley State University
2006
Recent observations of changes in some tundra ecosystems appear to be responses a warming climate. Several experimental studies have shown that plants and can respond strongly environmental change, including warming; however, most were limited single location short duration based on variety designs. In addition, comparisons among are difficult because techniques been used achieve different measurements assess responses. We metaanalysis plant community from standardized experiments at 11...
Ecology Letters (2011) Abstract Understanding the sensitivity of tundra vegetation to climate warming is critical forecasting future biodiversity and feedbacks climate. In situ experiments accelerate change on a small scale forecast responses local plant communities. Limitations this approach include apparent site‐specificity results uncertainty about power short‐term studies anticipate longer term change. We address these issues with synthesis 61 experimental studies, up 20 years duration,...
For more than 30 years, the relationship between net primary productivity and species richness has generated intense debate in ecology about processes regulating local diversity. The original view, which is still widely accepted, holds that hump-shaped, with first rising then declining increasing productivity. Although recent meta-analyses questioned generality of hump-shaped patterns, these syntheses have been criticized for failing to account methodological differences among studies. We...
Abstract We investigated the independent and combined effects of experimental warming grazing on plant species diversity north‐eastern Tibetan Plateau, a region highly vulnerable to ongoing climate land use changes. Experimental caused 26–36% decrease in richness, response that was generally dampened by grazing. Higher losses occurred at drier sites where N less available. Moreover, we observed an indirect effect change richness as mediated plant–plant interactions. Heat stress...
Abstract Whether climate change will turn cold biomes from large long‐term carbon sinks into sources is hotly debated because of the great potential for ecosystem‐mediated feedbacks to global climate. Critical are direction, magnitude and generality responses plant litter decomposition. Here, we present first quantitative analysis major climate‐change‐related drivers decomposition rates in northern worldwide. Leaf litters collected predominant species 33 manipulation experiments...
We investigated experimental warming and simulated grazing (clipping) effects on rangeland quality, as indicated by vegetation production nutritive in winter-grazed meadows summer-grazed shrublands the Tibetan Plateau, a system experiencing climatic pastoral land use changes. Warming decreased total aboveground net primary productivity (ANPP) 40 g·m−2·yr−1 at meadow habitats palatable ANPP (total minus non-palatable forb ANPP) 10 both habitats. The of medicinal Gentiana straminea increased...
Global climate change is predicted to have large impacts on the phenology and reproduction of alpine plants, which will important implications for plant demography community interactions, trophic dynamics, ecosystem energy balance, human livelihoods. In this article we report results a 3-year, fully factorial experimental study exploring how warming, snow addition, their combination affect reproductive phenology, effort, success four species belonging three different life forms in semiarid,...
Abstract Mountain regions are particularly vulnerable to climate change impacts. Yet, little is known about local adaptation responses in African mountain regions, especially if these incremental or transformational. First, using household questionnaires, we interviewed 1,500 farmers across ten investigate perceived impacts and responses. Second, through a reflective process involving all co-authors, identified: (1) main constraints opportunities for adaptation, (2) was Questionnaire data...
Abstract Exotic species dominate many communities; however the functional significance of species’ biogeographic origin remains highly contentious. This debate is fuelled in part by lack globally replicated, systematic data assessing relationship between provenance, function and response to perturbations. We examined abundance native exotic plant at 64 grasslands 13 countries, a subset sites we experimentally tested responses two fundamental drivers invasion, mineral nutrient supplies...
The rapidly warming temperatures in high-latitude and alpine regions have the potential to alter phenology of Arctic plants, affecting processes ranging from food webs ecosystem trace gas fluxes. International Tundra Experiment (ITEX) was initiated 1990 evaluate effects expected rapid changes temperature on tundra plant phenology, growth community using experimental warming. Here, we used ITEX control data test phenological responses background variation across sites spanning latitudinal...
Alpine meadows on the Tibetan Plateau comprise largest alpine ecosystem in world and provide critical services, including forage production carbon sequestration, which people depend from local to global scales. However, provision of these services may be threatened by climate warming combined with land use policies that are altering if how pastoralists can continue graze livestock, dominant livelihood practice this region for millennia. We synthesized findings a yak grazing experiment...
Abstract Mountain social‐ecological systems (MtSES) are vital to humanity, providing ecosystem services over half the planet's human population. Despite their importance, there has been no global assessment of threats MtSES, even as they face unprecedented challenges sustainability. With survey data from 57 MtSES sites worldwide, we test a conceptual model types and scales stressors in explore distinct configurations according primary economic orientation land use. We find that worldwide...
Abstract Synthesis efforts that identify patterns of ecosystem response to a suite warming manipulations can make important contributions climate change science. However, cross‐study comparisons are impeded by the paucity detailed analyses how passive and other affect microclimate. Here we document independent combined effects common manipulation, open‐top chambers (OTCs), simulated widespread land use, clipping, on microclimate Tibetan Plateau. OTCs consistently elevated growing season...
Many ecosystems worldwide are dominated by introduced plant species, leading to loss of biodiversity and ecosystem function. A common but rarely tested assumption is that these plants more abundant in vs. native communities, because ecological or evolutionary-based shifts populations underlie invasion success. Here, data for 26 herbaceous species at 39 sites, within eight countries, revealed abundances were similar (home) (away) sites - grass generally home away, while forbs low abundance,...