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Monday, May 4, 2020 | History

3 edition of Diversity, density, and development of early vegetation in a small clear-cut environment found in the catalog.

Diversity, density, and development of early vegetation in a small clear-cut environment

Philip M. McDonald

Diversity, density, and development of early vegetation in a small clear-cut environment

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Published by Pacific Southwest Research Station in [Albany, Calif.] .
Written in English

    Subjects:
  • Plant communities -- California,
  • Clearcutting -- California

  • Edition Notes

    StatementPhilip M. McDonald.
    SeriesResearch paper PSW-RP -- 239., Research paper PSW -- 239.
    ContributionsPacific Southwest Research Station (Berkeley, Calif.)
    The Physical Object
    Paginationii, 22 p. :
    Number of Pages22
    ID Numbers
    Open LibraryOL17596771M
    OCLC/WorldCa44393369

    The Amazon rainforest, alternatively, the Amazon Jungle, also known in English as Amazonia, is a moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompasses 7,, km 2 (2,, sq mi), of which 5,, km 2 (2,, sq mi) are covered by the rainforest. This region includes territory belonging to nine nates: Coordinates: 3°S 60°W / 3°S 60°W. Thanks for your visit my site. The largest single block of tidal halophytic mangrove forest in the world. [1] The name Sundarban can be literally translated as “beautiful jungle” or “beautiful forest” in the Bengali language (Sundar, “beautiful” and ban, “forest” or “jungle”).The name may have been derived from the Sundari trees that are found in Sundarbans in large numbers. Companion vegetation can promote the survival and growth of planted conifer trees by offering protection against stressful environmental conditions or by reducing competition from other species. A known companion plant is the alder tree—it can fix atmospheric nitrogen for .


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Diversity, density, and development of early vegetation in a small clear-cut environment by Philip M. McDonald Download PDF EPUB FB2

Ii In Brief McDonald, Philip M. Diversity, density, and development of early vegetation in a small clear-cut environment. environment. Res. Diversity, density, and development of early vegetation in a small clear-cut environment (OCoLC) Online version: McDonald, Philip M.

Diversity, density, and development of early vegetation in a small clear-cut environment (OCoLC) Material Type: Government publication, National government publication: Document Type: Book.

Diversity, density, and development of early vegetation in a small clear-cut environment (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors: Philip M McDonald; Pacific Southwest Research Station.

Density and Development of Bracken Fern (Pteridium aquilinum) in Forest Plantations as Affected by Manual and Chemical Application Article in Native Plants Journal 4(1) March Diversity 25 Reads. The density and development of greenleaf manzanita, other shrubs, and graminoids were evaluated in a young ponderosa pine plantation on a poor site in northern California from through term patterns of diversity and species occurrence.

Permanent-plot studies of early succession in old-growth Pseudotsuga forests suggest that changes in understory diversity are fairly short-lived following clear-cut logging and slash burning.

Populations of most vascular plant species recover to original levels prior to canopy closure. However. The density distribution in Indian coals is characterised by a low proportion or complete lack of low relative density fractions below orwhich is evident from the density distribution curves in Fig.

Lack of density fraction accounts for the lack of low ash fractions. As a consequence, Indian coals, as shown in Fig. are incapable of producing clean coal at low ash levels.

Relative density was used to conduct the CCA analysis of seedling and sapling vegetation and importance value was used to conduct the analysis of overstory vegetation.

CCA is a constrained ordination technique that achieves an optimal solution by arranging sites and species in a multidimensional space, with the restriction that the ordination Cited by: Clear cut Pros: low costs, simple, always with machines, easy soil preparation and regeneration Cons: requires using pioneer species, changed microclimate, loss of soil nutrients (esp K and nitrate), competing ground vegetation, mice habitat, aesthetics.

The active effect of natural regeneration on understory vegetation and diversity on clear-cut forestlands, in contrast to conifer reforestation, is still controversial.

Here we investigated differences in understory vegetation by comparing naturally regenerated deciduous forests (NR) and reforested spruce plantations (SP) aged 20–40 years on 12 similar clear-cuts of subalpine old-growth Cited by: 7.

Though the theory of density dependence or self-thinning is clear-cut, it has been difficult to find evidence of it in field studies. If density dependence is at play, it should leave an imprint on tree or shrub spatial distribution, such as a decrease in spatial aggregation with tree size or age (Meyer et al.

; Belay and Moe ).Cited by: The natural environment, commonly referred to simply as the environment, includes all living and non-living things occurring naturally on Earth. The natural environment includes complete ecological units that function as natural systems without massive human intervention, including all vegetation, animals, microorganisms, soil, rocks, atmosphere and natural phenomena that occur within their.

In order to prioritize promoting plant species diversity, clear-cut harvesting and selective harvesting at high and extra-high intensities should be avoided with regard to this type of forest in this region.

This study sheds light on the practice of forest operation in the study region and subtropical forests with the same environment. Full article. (1) Literature review.

We searched the literature for studies on disturbance by fire, wind and bark beetles, and their impacts on ecosystem services as defined by the Millennium Ecosystem Assessment (MEA, ), as well as their effects on biodiversity, focusing on species richness and habitat quality as well as on indices of diversity (e.g.

Shannon‐Index, Simpson‐Index, etc.).Cited by: In this report we evaluate (1) existing data regarding the ability of vegetation to act as a nutrient and sediment filter, (2) the effects of stream morphology on water quality, (3) the effects of streamside vegetation on water temperature, and (4) the potential impact of greenbelts (a combina- tion of nearstream vegetation and stream.

Long, James N. Trends in plant species diversity associated with development in a series of Pseudotsuga menziesii/Gaultheria shallon stands.

Northwest Science. 51(2): [] Long, James N.; Turner, J. Aboveground biomass of understorey and overstorey in an age sequence of four Douglas-fir stands. Journal of Applied. Urban sprawl or suburban sprawl mainly refers to the unrestricted growth in many urban areas of housing, commercial development, and roads over large expanses of land, with little concern for urban planning.

In addition to describing a particular form of urbanization, the term also relates to the social and environmental consequences associated with this development.

Invasive species can be a major threat to native biodiversity and the number of invasive plant species is increasing across the globe. Population genetic studies of invasive species can provide key insights into their invasion history and ensuing evolution, but also for their control.

Here we genetically characterise populations of Impatiens glandulifera, an invasive plant in Europe that can Cited by: Ecological succession is the process of change in the species structure of an ecological community over time.

The time scale can be decades (for example, after a wildfire), or even millions of years after a mass extinction. The community begins with relatively few pioneering plants and animals and develops through increasing complexity until it becomes stable or self-perpetuating as a climax. In the early development of forest stand, density of trees remain high and there is competition among trees for nutrients.

When natural regeneration or artificial seeding has resulted in dense, overstocked young stands, natural thinning will in most cases eventually reduce stocking to more silviculturally desirable levels.

But by the time some. Carabids (Carabidae, Coleoptera) were studied for 2 yearsto explore changes in their diversity and composition during a forestry cycle inthe Hungarian Mountain Range.

Native beech forest was clear-cut and replantedwith Norway by:   In the Great Basin, these include historical practices such as trapping for the fur trade in the mid to late s, predator-control programs using poison on public lands from the early s to to protect livestock (Feldman ), and poisoning of small mammals to protect crop production (Buffum ) and forage seedings (Plummer et al Cited by: Fike, J.

and Niering, W. () Four decades of old field vegetation development and the role of Celastrus orbiculatus in the Northeastern United States. Journal of Vegetation Science, 10, – Cited by: Full text of "The vegetation of South Africa, Lesotho and Swaziland" See other formats.

Nature, in the broadest sense, is equivalent to the natural world, physical world, or material world. "Nature" refers to the phenomena of the physical world, and also to life in general. It ranges in scale from the subatomic to the cosmic. The word nature is derived from the Latin word natura, or "essential qualities, innate disposition", and in ancient times, literally meant "birth".

[1]. The development of this fertile soil allowed agriculture and silviculture in the previously hostile environment; meaning that large portions of the Amazon rainforest are probably the result of centuries of human management, rather than naturally occurring as has previously been supposed.

Community Structure Any definition of a community is necessarily vague, but the relevant features of a community require that an assemblage of species coexist together in a habitat and they interact.

Therefore, a working definition of a community is a collection of plant and animal populations that are interacting directly or indirectly. The present book constitutes the general part of a monograph on Rocky Mountain vegetation which has been under way since It is hoped that another volume dealing with the details of the development and structure of the climax formation of the Great Plains, Rocky Mountains, and.

US EPA-AWBERC LIBRARY United States Environmental Protection Agency and Government of Canada ISBN Copies may be obtained from: Great Lakes National Program Office U.S.

Environmental Protection Agency 77 West Jackson Blvd Chicago, Illinois U.S.A. EPA B Public Inquiries Environment Canada, Ontario Region Dufferin Street.

Abstract: The book covers the development, site condition, composition, stucture and use history, flora and vegetation, dynamics and conservation issues of slope steppes, loess steppes and forest steppe meadows of Hungary. There are notes on favourable management as well.

Matang Mangrove Forest Reserve (MMFR) in Peninsular Malaysia is under systematic management since and still considered as the best managed mangrove forest in the world.

The present study on silvimetrics assessed the ongoing MMFR forest management, which includes a first thinning after 15 years, a second thinning after 20 years and clear-felling of year old forest blocks, for its Cited by:   Stand density (stems ha −1) or basal area (m 2 ha −1)a a Overstorey types: B – broadleaf, C – conifer, and M – mixed‐wood.,b b Values are means with 1 SE in parentheses.

Stand density (stems ha −1) was determined for the younger (7‐ and 15‐year‐old) stands and basal area (m 2 ha −1) for older by: The natural environment encompasses all living and non-living things occurring naturally, meaning in this case not term is most often applied to the Earth or some parts of Earth.

This environment encompasses the interaction of all living species, climate, weather and natural resources that affect human survival and economic activity.

The concept of the natural environment can be. The vegetation on the west coast of Norway is mainly in the boreonemoral zone (Abrahamsen et al. Exceptions to this general pattern are a small area around the Hardangerfjorden in Hordaland, which is in the nemoral zone, and some areas not far from the Trondheimsfjorden, which is in the southern boreal by:   An illustration of the two forest management systems to be compared in this study: the even-aged (a) and uneven-aged (b) forest stand level, even-aged management comprises a clear and repetitive cycle of distinct phases, including the regeneration, growing, and thinning, and final harvesting where typically a low number of live retention trees are leaf on the clear Cited by: The main goals of the Biodiversity Conservation Strategy and Action Plan are to conserve the country’s biological diversity - major ecosystems and species - for future generations, at the same time contributing to the global conservation efforts which employ every measure known and available to mankind, at laying down the foundations for.

Affected Environment and Environmental Consequences – Socioeconomics Socioeconomics This section addresses several different factors that could affect the quality of life and economy in the area surrounding the proposed acquisition area where.

Climate and Society in Ancient Worlds. Diversity in Collapse and Resilience long focused on the concept of “carrying capacity” to try and elucidate both the potential and limitations of the environment for societal development.

The term was first used at the end of the 19th century in ecology and has since come to be understood as. The development and survival of the eggs and early instars of the grasshopper Chorthippus brunneus (Thunberg) in north west England. / Unpubl. Ph.D. thesis, Univ.

of Liverpool. Cohen, D. After the first clearcut, tree diversity remained high until after the second cut. Diversity based on density and basal area decreased significantly 14 years after the second clearcut and remained low through Diversity was highest in the early establishment stage of stand development, then declined at the intermediate stage with canopy.

Diversity, density, and development of early vegetation in a small clear-cut environment. Treesearch. Philip M. McDonald. On a high quality site in northern California, frequency, density, foliar cover, and height were measured on every plant species present in an 8-acre clear-cut opening each year from through Full text of "Final environmental impact statement: California vegetation management" See other formats.Biodiversitas, Journal of Biological Diversity or Biodiversitas encourages submission of manuscripts dealing with all biodiversity aspects of plants, animals and microbes at the level of gene.