Influences of climate, fire, grazing, and logging on woody species composition along an elevation gradient in the eastern Cascades, Washington

2010 ◽  
Vol 260 (12) ◽  
pp. 2204-2213 ◽  
Author(s):  
Ryan D. Haugo ◽  
Sonia A. Hall ◽  
Elizabeth M. Gray ◽  
Patrick Gonzalez ◽  
Jonathan D. Bakker
Keyword(s):  
Species Composition ◽  
Elevation Gradient ◽  
Woody Species ◽  
Eastern Cascades

Effects of human disturbance on understory woody species composition and diversity in fengshui forests

2009 ◽  
Vol 17 (5) ◽  
pp. 458 ◽  
Author(s):  
Lü Hao-rong ◽  
Liu Song-song ◽  
Zhu Jian-yun ◽  
Ye Yong-chang ◽  
Chen Hong-yue ◽  
...  
Keyword(s):  
Species Composition ◽  
Human Disturbance ◽  
Woody Species

Woody Species Composition, Diversity, Structure and Uses of Selected Church Forests in Central Ethiopia

2022 ◽  
pp. 205-223
Author(s):  
Eguale Tadesse Kifle ◽  
Asia Khamzina ◽  
Yowhan Son ◽  
Florent Noulèkoun ◽  
Abdu Abdelkadir ◽  
...  
Keyword(s):  
Species Composition ◽  
Woody Species ◽  
Central Ethiopia ◽  
Diversity Structure

Seasonal variation in soil seed bank size and species composition of selected habitat types in Maputaland, South Africa

Bothalia ◽  
2007 ◽  
Vol 37 (2) ◽  
pp. 249-258 ◽  
Author(s):  
M. J. S. Kellerman ◽  
M. W. Van Rooyen
Keyword(s):  
South Africa ◽  
Seasonal Variation ◽  
Species Composition ◽  
Seed Bank ◽  
Soil Seed Bank ◽  
Woody Species ◽  
Forest Edge ◽  
Seed Banks ◽  
Habitat Types ◽  
Open Woodland

Seasonal variation in seed bank size and species composition of five selected habitat types within the Tembe Elephant Park. South Africa, was investigated. At three-month intervals, soil samples were randomly collected from five different habitat types: a, Licuati forest; b, Licuati thicket; c, a bare or sparsely vegetated zone surrounding the forest edge, referred to as the forest/grassland ecotone; d, grassland; and e, open woodland. Most species in the seed bank flora were either grasses, sedges, or forbs, with hardly any evidence of woody species. The Licuati forest and thicket soils produced the lowest seed densities in all seasons.  Licuati forest and grassland seed banks showed a two-fold seasonal variation in size, those of the Licuati thicket and woodland a three-fold variation in size, whereas the forest/grassland ecotone maintained a relatively large seed bank all year round. The woodland seed bank had the highest species richness, whereas the Licuati forest and thicket soils were poor in species. Generally, it was found that the greatest correspondence in species composition was between the Licuati forest and thicket, as well as the forest/grassland ecotone and grassland seed bank floras.

Species Composition and Development of Second-Growth Hardwood Stands in Quebec

1968 ◽  
Vol 44 (6) ◽  
pp. 31-35 ◽  
Author(s):  
Carl H. Winget
Keyword(s):  
Species Composition ◽  
Dominant Species ◽  
Sugar Maple ◽  
Woody Species ◽  
Balsam Fir ◽  
Black Cherry ◽  
Minor Components ◽  
White Ash ◽  
Second Growth ◽  
Cutting Intensity

Second-growth, tolerant hardwood stands developed rapidly and, almost entirely from shade-tolerant advance growth, regardless of cutting intensity. Non-commercial woody species were seldom important competitors. Sugar maple, associated with beech on upland and balsam fir on lowland sites, was the dominant species. Yellow birch, basswood and hemlock, important contributors to wood volumes harvested, were minor components of second-growth stands. Valuable minor species such as red oak, white ash, and black cherry had practically disappeared. The application of known techniques for regenerating disturbance-dependent species is urgently required.

scholarly journals The analysis of functional significance of the urban plantings in Vladivostok landscape structure

2020 ◽  
Author(s):  
Н.С. ШИХОВА
Keyword(s):  
Heavy Metals ◽  
Species Composition ◽  
Functional Status ◽  
Functional Significance ◽  
Woody Species ◽  
Urban Ecosystems ◽  
Biological Indicators ◽  
Town Planning ◽  
Systematic Analysis ◽  
Integral Assessment

Обобщены результаты многолетнего мониторинга зеленых насаждений Владивостока. Были обследованы растительность и почвы всех городских парков, большинства скверов, старых садов-скверов, аллейных и рядовых посадок, 34 насаждений внутриквартального озеленения в разных районах города, 6 внутригородских рекреационных лесов. Дана качественная и количественная характеристика зеленых насаждений и озелененных городских территорий различного функционального назначения по комплексу эколого-биологических показателей. Сравниваются видовой состав арборифлоры, виталитет древостоя, качество почвенного покрова, интенсивность накопления тяжелых металлов почвами и растениями, а также напряженность антропогенно-техногенного пресса. Основной целью работы являлись системный анализ состояния зеленых насаждений и методическое обоснование интегральной оценки их функциональной значимости в системе городского озеленения. Была разработана оригинальная методика, в основу которой положен введенный автором сводный показатель – индекс функционального статуса насаждений. На его основе выполнена сравнительная оценка функциональной эффективности городских зеленых насаждений разного назначения. Установлен высокий функциональный статус рядовых посадок и скверов, обусловленный преимущественно активной трансформацией почвами и растениями тяжелых металлов. В 1,5 раза ниже этот показатель для внутригородских рекреационных лесов как следствие их бедного видового состава и низкого жизненного состояния древостоя, а также слабого накопления тяжелых металлов почвами и растениями. Результаты исследований могут служить научно-методической базой при разработке устойчивой структуры городского озеленения и организации рациональной системы мониторинга урбоэкосистем. The article compiles the results of long-term monitoring of green plantings in Vladivostok city. The vegetation and soils of all city parks, most of squares, old gardens, alleys and ordinary plantings, 34 intra-quarter plantings in different parts of the city, 6 urban recreational forests were examined. The qualitative and quantitative characteristics of greenery and urban green areas of various functional purposes are given for a set of ecological and biological indicators. The species composition of arboriflora, the vitality of the stand, the quality of the soil cover, the intensity of accumulation of heavy metals by soils and plants, and the intensity of the anthropogenic-technogenic press are compared. The main purpose of the work was a systematic analysis of the state of green spaces and a methodological substantiation of the integral assessment of their functional significance in the urban greening system. An original methods was developed based on the summary indicator introduced by the author – the “functional status index (IFS) of plantings”. A comparative assessment of the functional effectiveness of urban plantings of various town planning function has been made on the basis of such index. The increased functional status of ordinary plantings and squares, caused mainly by the active transformation of heavy metals by soils and plants, was installed. This index is 1.5 times lower for intra-urban recreational forests and was the result of a few species composition, low vitality of woody species and poor accumulation of heavy metals by soils and plants. The results of this research may serve as a scientific-methodological basis to creation of stability town plantings structure and organize the rational monitoring system of urban ecosystems.

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