Sentences with phrase «in vegetation responses»
[Response: I don't claim any particular special competence in the vegetation response to changing climate, but it will clearly depend on region, and it will depend crucially on changes to precipitation patterns as well as temperature or CO2 fertilization.
http://www.realclimate.org/ Not exact matches
A total of 367 GL of Commonwealth environmental water was released from Hume Dam to support in - channel, wetland and low elevation floodplain habitat throughout the River Murray for improving the condition, movement and recruitment of native fish — both silver (critically endangered under the Environment Protection and Biodiversity Conservation Act 1999) and golden perch were detected spawning in the Mid Murray in response to flow variability; improve riparian and wetland vegetation condition; and contribute to the managed export of salt from the River Murray system.
In particular, this information is building our understanding on the responses of vegetation, fish and frogs to environmental water as well as hydrological connectivity.
In 2017 - 18, Commonwealth environmental water will continue to build on the positive responses of vegetation from past environmental watering and natural flows; and provide habitat and recruitment opportunities for waterbirds, native fish, turtles and frogs.
«Importantly, the observed response lends weight to the hypothesis that any additional soil water in the root zone is then available to facilitate vegetation growth and greening under enhanced carbon dioxide,» Wang said.
The researchers believe the greening is a response to higher atmospheric carbon dioxide inducing decreases in plant stomatal conductance — the measure of the rate of passage of carbon dioxide entering, or water vapor exiting, through the stomata of a leaf — and increases in soil water, thus enhancing vegetation growth.
«Our results highlight the importance of the interactive effects of vegetation type, temperature and moisture in determining of the response of soil decomposition to climate change,» says lead author Julia Bradley - Cook, who conducted the study as part of her doctorate in Ecology and Evolutionary Biology at Dartmouth and who is now a Congressional Science Fellow.
The scientific literature contains two different mechanisms for a similar pattern — one stems from vegetation self - organizing in response to limited rainfall, and the other results from bustling termite mounds improving the lives of nearby plants.
Their results showed that changes in key water - stress variables are strongly modified by vegetation physiological effects in response to increased CO2 at the leaf level, illustrating how deeply the physiological effects due to increasing atmospheric CO2 impact the water cycle.
This study highlights the key role of vegetation in controlling future terrestrial hydrologic response and emphasizes that the continental carbon and water cycles are intimately coupled over land and must be studied as an interconnected system.
«Our finding that vegetation plays a key role future in terrestrial hydrologic response and water stress is of utmost importance to properly predict future dryness and water resources,» says Gentine, whose research focuses on the relationship between hydrology and atmospheric science, land / atmosphere interaction, and its impact on climate change.
The dead speak: Tracking the cryospheric response to contemporary warming in Arctic Canada with entombed vegetation and in situ 14C in adjacent rocks.
For this subsystem, many of the longer term feedbacks in the full climate system (such as ice sheets, vegetation response, the carbon cycle) and some of the shorter term bio-geophysical feedbacks (methane, dust and other aerosols) are explicitly excluded.
The climate sensitivity classically defined is the response of global mean temperature to a forcing once all the «fast feedbacks» have occurred (atmospheric temperatures, clouds, water vapour, winds, snow, sea ice etc.), but before any of the «slow» feedbacks have kicked in (ice sheets, vegetation, carbon cycle etc.).
Regional vegetation die - off in response to global - change - type drought.
Although dynamic vegetation models tend to predict an overall expansion of cool forests and woodlands (Shafer et al. 2015), some tree species may actually experience reduced ranges due to geographical obstacles to range expansion in response to climate (Coops and Waring 2001).
We call this the Charney climate sensitivity, because it is essentially the case considered by Charney (1979), in which water vapor, clouds and sea ice were allowed to change in response to climate change, but GHG (greenhouse gas) amounts, ice sheet area, sea level and vegetation distributions were taken as specified boundary conditions.
Worldwide, vegetation carbon storage and leaf cover are increasing in response to rising CO2.
The long timescales (even ignoring the «Earth system» responses like ice sheets and vegetation) are not easy to get at in the instrumental record or by studying «abrupt forcing» events like volcanic eruptions.
'' in response to rising CO2 emissions and warmer temperatures, but these new results suggest there could also be a negative impact of climate change on vegetation growth in North America.
Average spring (March to May) normalized difference vegetation index in response to the warmest 16 % of Arctic March temperatures between 1982 - 2013.
On the whole, the Earth's land surface has «greened» in response to rising CO2 emissions and warmer temperatures, but these new results suggest there could also be a negative impact of climate change on vegetation growth in North America.
Current research focusing on terrestrial animals includes several studies on the island fox, one on the role of deer mice in affecting vegetation community recovery, and one on the response of lizards to the removal of rats on Anacapa.
The climate sensitivity classically defined is the response of global mean temperature to a forcing once all the «fast feedbacks» have occurred (atmospheric temperatures, clouds, water vapour, winds, snow, sea ice etc.), but before any of the «slow» feedbacks have kicked in (ice sheets, vegetation, carbon cycle etc.).
For this subsystem, many of the longer term feedbacks in the full climate system (such as ice sheets, vegetation response, the carbon cycle) and some of the shorter term bio-geophysical feedbacks (methane, dust and other aerosols) are explicitly excluded.
[Response: Changes in vegetation as a response to warming as seen by satellites over the same areas are obviously caused by former - USSR apparatchiks painting the groundResponse: Changes in vegetation as a response to warming as seen by satellites over the same areas are obviously caused by former - USSR apparatchiks painting the groundresponse to warming as seen by satellites over the same areas are obviously caused by former - USSR apparatchiks painting the ground green.]
The discrepancy is because we measured the impacts on vegetation and soils achieved by ranchers managing at the ranch scale and adapting management in response to changing circumstances in order to achieve desirable outcomes» (Teague, et al 2011 (ISBN 978 -1-60692-023-7)-RRB-.
Instead, to constrain the Charney sensitivity from the ice age cycle you need to specifically extract out those long term changes (in ice sheets, vegetation, sea level etc.) and then estimate the total radiative forcing including these changes as forcing, not responses.
[Response: Some dynamic vegetation models do take the diffuse / direct light ratios into account, but these aren't in widespread use for long millennial runs.
«Vegetation and Soil Feedbacks on the Response of the African Monsson to Orbital Forcing in the Early to Middle Holocene.»
While the human eye can discern colors in the visible spectrum, by also measuring the spectral response of the surface in reflective infrared light a far more precise picture is provided of impacts to forest vegetation.
The study's results are, therefore, «likely to mainly reflect changes in climate features, rather than the full response from vegetation», they note.
For instance a 2017 publication in Nature's subjournal Scientific Reports shows that 48 North - American passerine species show earlier spring arrival, but that their migration is still outpaced by the vegetation response to spring onset.
Wramneby et al (2010) explored the regional interaction between climate and vegetation response using a RCM set - up, and highlighted the importance of this interaction for assessing the mean temperature response particularly at high latitudes (due to the role of vegetation in snow covered areas) and in water limited evaporation regimes (due to the role of vegetation in controlling surface evaporative cooling).
Our results illustrate the utility of global scale analyses that can aide in identifying potential ecoclimate teleconnections affected by vegetation change at regional scales, while simultaneously providing insight into the mechanisms of the associated ecological responses in affected regions.
5 looked in more detail at the responses of three of these DGVMs in the Amazon region, and found that although all three models simulated reductions in vegetation carbon, they did this for different reasons.
We find, when all seven models are considered for one representative concentration pathway × general circulation model combination, such uncertainties explain 30 % more variation in modeled vegetation carbon change than responses of net primary productivity alone, increasing to 151 % for non-HYBRID4 models.
4 looked at the responses of five DGVMs, coupled to a fast climate analog model, finding dramatic divergence in future behavior, particularly of tropical vegetation responses to drought and boreal ecosystem responses to elevated temperature and changing soil moisture.
It is important to recognize that ΔMLT is a proxy for changing magnitudes of temperature, precipitation, humidity, and CO2, and that both climate and ecosystem inertia also play roles in the relationships between climate forcing and vegetation responses.
Therefore, it is imperative that we are capable of anticipating the potential responses of global terrestrial vegetation to future changes in climate and atmospheric chemistry.
65 J. Kutzbach, G. Bonan, J. Foley, S. P. Harrison, «Vegetation and soil feedbacks on the response of the African monsoon to orbital forcing in the early to middle Holocene,» Nature 384:623 - 626 (19 December 1996).
The response of atmospheric CO2 and climate to the reconstructed variability in solar irradiance and radiative forcing by volcanoes over the last millennium is examined by applying a coupled physical — biogeochemical climate model that includes the Lund - Potsdam - Jena dynamic global vegetation model (LPJ - DGVM) and a simplified analogue of a coupled atmosphere — ocean general circulation model.
Impacts ranged from a strong increase to a severe loss of vegetation carbon (cv), depending on differences in climate projections, as well as the physiological response to rising [CO2].
Stillwater Sciences and American Rivers define standard methods for measuring vegetation response to meadow restoration in the Sierra Nevada.
A research team including Riikka Rinnan and Magnus Kramshøj from the Center for Permafrost at the University of Copehagen, Denmark recently conducted studies to assess the Volatile organic compounds (VOC) emission response of vegetation to warming temperatures in the Arctic.
These moist enthalpy - related studies confirm previous results showing that changes in vegetation cover, surface moisture and energy fluxes generally lead to significant climatic changes (e.g. 41 - 43) and responses which can be of a similar magnitude to that projected for future greenhouse gas concentrations (44, 45).
To avoid long response times in extreme climates, today's ice sheets are assigned surface properties of the tundra, thus allowing them to have a high albedo snow cover in cold climates but darker vegetation in warm climates.
Vegetation / ecosystem modelling and analysis project: comparing biogeography and biogeochemistry models in a continental - scale study of terrestrial responses to climate change and CO2 doubling.
Rainfall change and variability is very likely to affect vegetation in tropical grassland and savanna systems with, for example, a reduction in cover and productivity simulated along an aridity gradient in southern African savanna in response to the observed drying trend of about 8 mm / yr since 1970 (Woodward and Lomas, 2004a).
When done so, proxy records and climate models indicate that the response to past global warming was profound, with evidence for global reorganisation of the hydrological cycle and profound local increases and decreases in rainfall; combined with elevated temperatures and terrestrial vegetation change, this appears to often result in warming - enhanced soil organic matter oxidation, chemical weathering and nutrient cycling.