Vegetational Succession in a South Swedish Deciduous Wood

1978 ◽  
pp. 55-67 ◽  
Author(s):  
Nils Malmer ◽  
Lennart Lindgren ◽  
Stefan Persson
Keyword(s):  
Deciduous Wood ◽  
Vegetational Succession

Vegetational succession in a South Swedish deciduous wood

Vegetatio ◽  
1978 ◽  
Vol 36 (1) ◽  
pp. 17-29 ◽  
Author(s):  
Nils Malmer ◽  
Lennart Lindgren ◽  
Stefan Persson
Keyword(s):  
Deciduous Wood ◽  
Vegetational Succession

Fabrication and properties of peroxide cellulose from coniferous and deciduous wood for chemical processing

2006 ◽  
Vol 38 (1) ◽  
pp. 32-36
Author(s):  
O. A. Kolmakova ◽  
R. Z. Pen ◽  
I. L. Shapiro ◽  
A. V. Byvshev
Keyword(s):  
Chemical Processing ◽  
Deciduous Wood

scholarly journals Agroforestry and Its Impact in Southeast Asia

2020 ◽  
Author(s):  
Christopher Hunt
Keyword(s):  
Land Management ◽  
Agroforestry Systems ◽  
Management Systems ◽  
Early Interventions ◽  
Significant Component ◽  
The Holocene ◽  
Wide Range ◽  
Vegetational Succession ◽  
Food Procurement

Research during the late 20th and early 21st centuries found that traces of human intervention in vegetation in Southeast Asian and Australasian forests started extremely early, quite probably close to the first colonization of the region by modern people around or before 50,000 years ago. It also identified what may be insubstantial evidence for the translocation of economically important plants during the latest Pleistocene and Early Holocene. These activities may reflect early experiments with plants which evolved into agroforestry. Early in the Holocene, land management/food procurement systems, in which trees were a very significant component, seem to have developed over very extensive areas, often underpinned by dispersal of starchy plants, some of which seem to show domesticated morphologies, although the evidence for this is still relatively insubstantial. These land management/food procurement systems might be regarded as a sort of precursor to agroforestry. Similar systems were reported historically during early Western contact, and some agroforest systems survive to this day, although they are threatened in many places by expansion of other types of land use. The wide range of recorded agroforestry makes categorizing impacts problematical, but widespread disruption of vegetational succession across the region during the Holocene can perhaps be ascribed to agroforestry or similar land-management systems, and in more recent times impacts on biodiversity and geomorphological systems can be distinguished. Impacts of these early interventions in forests seem to have been variable and locally contingent, but what seem to have been agroforestry systems have persisted for millennia, suggesting that some may offer long-term sustainability.

scholarly journals An Endophytic Trichoderma Strain Promotes Growth of Its Hosts and Defends Against Pathogen Attack

2020 ◽  
Vol 11 ◽  
Author(s):  
Yu-Heng Tseng ◽  
Hamid Rouina ◽  
Karin Groten ◽  
Pijakala Rajani ◽  
Alexandra C. U. Furch ◽  
...  
Keyword(s):  
Pathogenic Fungus ◽  
Alternaria Brassicicola ◽  
Plant Performance ◽  
Nicotiana Attenuata ◽  
Initial Growth ◽  
The Novel ◽  
Leucas Aspera ◽  
Deciduous Wood ◽  
Agricultural Applications ◽  
Multilocus Phylogeny

Plants host numerous endophytic microbes which promote plant performance, in particular under stress. A new endophytic fungus was isolated from the leaves of a deciduous wood tree Leucas aspera. Morphological inspection and multilocus phylogeny identified the fungus as a new Trichoderma strain. If applied to Arabidopsis thaliana and Nicotiana attenuata, it mainly colonizes their roots and strongly promotes initial growth of the plants on soil. The fungus grows on high NaCl or mannitol concentrations, and shows predatory capability on the pathogenic fungus Alternaria brassicicola. Colonized Arabidopsis plants tolerate higher salt stress and show lower A. brassicicola spread in roots and shoots, while arbuscular mycorrhiza formation in N. attenuata is not affected by the Trichoderma strain. These beneficial features of the novel Trichoderma strain are important prerequisites for agricultural applications.

Home sapiensorCastor fiber?

Antiquity ◽  
1983 ◽  
Vol 57 (220) ◽  
pp. 95-102 ◽  
Author(s):  
J. M. Coles ◽  
B. J. Orme
Keyword(s):  
Climatic Change ◽  
Pollen Analysis ◽  
Ice Sheets ◽  
Change Rate ◽  
Species Migration ◽  
Atlantic Period ◽  
Vegetational Change ◽  
Vegetational Succession ◽  
Glacial Refuges

Following the development of pollen analysis in the earlier part of this century, much effort was devoted to unravelling the sequence of vegetational change during and after the retreat of the last European ice-sheets. The outlines established, questions of causation came to the fore, and the debate focused on factors such as climatic change, rate of species migration from glacial refuges, and natural vegetational succession. In more recent decades, a further factor has been widely investigated, namely the possible influence of humans on the landscape, principally as farmers and smiths. The development and modification of hypotheses is well illustrated by the Elm Decline of the Atlantic period, where climate (Iversen, 1941) or man (Troels-Smith, 1960) and occasionally disease (see refs in Simmons & Tooley, 1981, 134) have been held responsible for a widespread but by no means straightforward decline in elm pollen.

GRANULAR ACTIVATED CARBON FROM DECIDUOUS WOOD LIGNOCELLULOSE

2006 ◽  
pp. 187-193
Author(s):  
JANIS RIZHIKOVS ◽  
J. ZANDERSONS ◽  
M. PUKE ◽  
N. VEDERNIKOVS ◽  
G. DOBELE ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Granular Activated Carbon ◽  
Deciduous Wood

Carbon materials obtained from self-binding sugar cane bagasse and deciduous wood residues plastics

2004 ◽  
Vol 26 (4) ◽  
pp. 345-360 ◽  
Author(s):  
J. Zandersons ◽  
J. Gravitis ◽  
A. Zhurinsh ◽  
A. Kokorevics ◽  
U. Kallavus ◽  
...  
Keyword(s):  
Sugar Cane ◽  
Carbon Materials ◽  
Sugar Cane Bagasse ◽  
Wood Residues ◽  
Deciduous Wood

The Role of Fire in Natural Communities: An Example from the Southern Sierra Nevada, California

1976 ◽  
Vol 3 (2) ◽  
pp. 91-99 ◽  
Author(s):  
David J. Parsons
Keyword(s):  
Sierra Nevada ◽  
Woody Species ◽  
Past Century ◽  
The Past ◽  
Shrub Community ◽  
Healthy State ◽  
Low Diversity ◽  
Vegetational Succession ◽  
Dead Material

The exclusion of fire from the low-elevation foothills of the southern Sierra Nevada of California over the past century has resulted in large expanses of over-mature, senescent chaparral. The fuel buildup associated with this situation poses a threat, in that any fire which gets started has the potential of becoming a major holocaust.A detailed analysis is made of the vegetational succession following fire in four different-aged stands of Chamise chaparral in the southern Sierra Nevada. Progression from a diverse multi-species herb and shrub community towards a dense, structurally uniform, low-diversity stand dominated by a single woody species, Adenostoma fasciculatum (Chamise), is demonstrated. An increase in shrub cover and height along with the amount of dead material found laddered through the canopy, create optimal conditions for combustion within some 35 years following the last fire. The herbaceous vegetation shows a high diversity and cover in the first few years after burning, but rapidly decreases thereafter. Evidence is presented that frequent fires are required to maintain the chaparral community in a vigorous and healthy state. The need to institute progressive fuel-management programmes which recognize the natural role of fire in the evolution of the chaparral type wherever it is found, is discussed and advocated. Attempts are also made to relate these findings to the preservation of other fire-adapted vegetation types of the world.

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