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4 edition of Role of boreal vegetation in controlling ecosystem processes and feedbacks to climate found in the catalog.

Role of boreal vegetation in controlling ecosystem processes and feedbacks to climate

Role of boreal vegetation in controlling ecosystem processes and feedbacks to climate

1997 final report

  • 275 Want to read
  • 12 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Vegetation,
  • Ecosystems,
  • Feedback,
  • Climate

  • Edition Notes

    StatementF.S. Chapin, III ... [et al.].
    Series[NASA contractor report] -- NASA-113018., NASA contractor report -- NASA CR-113018.
    ContributionsChapin, F. Stuart III., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17838083M
    OCLC/WorldCa40855423

    The sharp contrast in albedo between snow cover and vegetation, the potential release of large carbon stocks, and strong feedback on ocean-atmosphere circulation make the boreal region play a very. The Earth's climate is determined by a number of complex connected physical, chemical and biological processes occurring in the atmosphere, land and ocean. The radiative properties of the atmosphere, a major controlling factor of the Earth's climate, are strongly affected by the biophysical state of.

    Microbes, Plants, Animal Interactions] Determine how and where interactions among microbes, plants, and animals exert control over ecosystem responses to climate change and disturbances. 3.[ Vegetation, hydrology, disturbance interactions ] Understand how vegetation attributes and hydrologic conditions interact, and respond and feedback to. However, global warming will change the balance between fire and climate in driving variations of boreal forest distribution under four global warming scenarios. With a future global warming of °C, the fire control on local vegetation composition will grow to exceed that of climate Author: C Wu.

    Anthropogenic climate change will likely result in shifts in tree species ranges and abundances. The species composition of the southern boreal biome (much of northern USA and southern Canada) is expected to be especially sensitive to climate warming since there is a relatively sharp boundary between many temperate species to the south and boreal species to the north. Carbohydrate-rich extrafloral nectar (EFN) is produced in nectaries on the leaves, stipules, and stems of plants and provides a significant energy source for ants and other plant mutualists outside of the flowering period. Our review of literature on EFN indicates that only a few forest plant species in cool boreal environments bear EFN-producing nectaries and that EFN Author: Jarmo K. Holopainen, James D. Blande, Jouni Sorvari.


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Role of boreal vegetation in controlling ecosystem processes and feedbacks to climate Download PDF EPUB FB2

Vegetation phenology is highly sensitive to climate change. Phenology also controls many feedbacks of vegetation to the climate system by influencing the seasonality of albedo, surface roughness length, canopy conductance, and fluxes of water, energy, CO 2 and biogenic volatile organic by: Get this from a library.

Role of boreal vegetation in controlling ecosystem processes and feedbacks to climate: final report. [F Stuart Chapin, III; United States. National Aeronautics and Space Administration.;]. In boreal forests, which contain large amounts of the world's terrestrial organic carbon, fire is a natural and fundamental disturbance regime essential in controlling many ecosystem processes.

As a result of predicted climate change in the future, the fire regime and, consequently, the forest cover and carbon storage of boreal regions will. Cumulatively, these changes have the potential to greatly influence plant species composition, abundance, and diversity, with implications for ecosystem function and feedbacks to regional and global climate (cf.

Euskirchen et al.,). Boreal and arctic ecosystems may differ in their response to disturbances, including climate by:   The contributed papers in this issue point to the importance of looking at all scales and processes involved to better understand the effects of global climate change on the boreal ecosystem.

They also provide further understanding on some of the concerns that governments, NGOs and the public should consider in any policy discussions regarding Cited by: Climate change can affect terrestrial and marine ecosystems which in turn has impacts on both the water and carbon cycles and then feeds back to the climate.

Direct human influence on vegetation can also lead to impacts on the climate, through the energy, water and carbon cycles. Terrestrial ecosystem carbon dynamics and climate feedbacks.

that biological processes can control and steer the Earth system in a globally significant way. in temperate and boreal forest Cited by: within ecosystems, the age and compositional structure, and plant-animal interactions.

(c) Document how changes in vegetation characteristics, surface water extent, and/or changes in faunal communities influence ecosystem processes and services, in particular net feedbacks to Size: KB.

The role of vegetation feedbacks for the process of ice-sheet evolution could potentially be important in realistically modeling the past and future evolution of the Greenland by: hydrologic cycle will shift ecosystem types, process rates, and connections to other ecosystems, often irreversibly † Changes in ecosystem productivity, food-chain relationships, disease spread, pollutant transport, and climate feedbacks have important societal consequences † The human and financial costs of climate change in the US areCited by:   At monthly-to-interannual time scales, leaf phenology plays an important role in vegetation–climate interaction.

The seasonal emergence and senescence of leaves on deciduous trees and grasses are affected by temperature and precipitation variability, and can in turn alter surface energy and hydrological budgets to impact the climate.

In spite of this Cited by: Because this ecosystem is located at the southern edge of the boreal zone, it is considered particularly vulnerable to climate change.

The S1 bog is. Climate: warm temperature year-round and altering dry and wet seasons vegetation: plants are adapted to survive drought and extreme heat and may have deep roots that can tap into ground water Temperate: (prairies) Climate: winters are bitterly cold, summers are hot and dry with annual precipitation that is fairly sparse an uneven throughout.

Plant-soil feedbacks (PSFs) are interactions among plants, soil organisms, and abiotic soil conditions that influence plant performance, plant species diversity, and community structure, ultimately driving ecosystem processes.

We review how climate change will alter PSFs and their potential consequences for ecosystem functioning. Climate change Cited by: 3. The Boreal Ecosystem presents an overview of the state of knowledge on the boreal forest region of North America, with extensive reference to the boreal regions of Europe and Asia.

Initial sections of this book deal with aspects of the floristic composition and evolutionary history of the boreal Edition: 1. Characterization of ecosystem resilience of southern boreal forests in relation to variation in climate averages and extremes, with particular emphasis on the effects of hydrology and soil properties; Analysis of the climatic, hydrologic and biophysical processes that govern water, energy and carbon balances at the stand level.

across boreal landscapes, it remains a meaningful fraction of the carbon pool (Ohlson et al. In this paper, we review the role of wildfire charcoal in boreal ecosystems with an emphasis on boreal carbon budgets, ecosystem productivity and implications for forest management.

Properties and role of charcoal in boreal soil functionCited by: Ecosystem Management in the Boreal Forest. ring width of adult trees from 34 control and thinned stands within an area of 11, km2 in the boreal.

The boreal forest holds the largest pool of living biomass of the terrestrial surface. It is thought to be a net sink for carbon at present, but global climate change could affect the balance of carbon fluxes.

Synthesis of results from several Arctic and boreal research programmes provides evidence for the strong role of high‐latitude ecosystems in the climate system. Average surface air temperature has increased °C per decade during the twentieth century in the western North American Arctic and boreal forest by:.

that τveg is dependent on the combined effects of vegetation type, climate, soil and land use (Erb et al., ). However, our quantita-tive understanding on the controlling factors of τveg is still very limited.

Moreover, as it is difficult to measure foliage, root and wood C turn-over times separately and directly in the field, the ESMs Cited by:   The boreal forest is one of the world's great ecosystems, stretching across North America and Eurasia in an unbroken band and containing about 25% of the world's closed canopy forests.

The Kluane Boreal Forest Ecosystem Project was a year study by nine of Canada's leading ecologists to unravel the impact of the snowshoe hare cycle on the plants and the other vertebrate species in the boreal.climate are discussed in terms of adaptive fire management strategies, age class distribution, and such global stewardship issues as biodiversity, carbon cycling, and sequestration.

Key words: climate change, fire regime, boreal forests, ecosystem structure and function, ecosystem Size: KB.