Effects of fire seasonality and intensity on resprouting woody plants in prairie‐forest communities

2021 ◽  
Author(s):  
Jed Meunier ◽  
Nathan S. Holoubek ◽  
Yari Johnson ◽  
Tim Kuhman ◽  
Brad Strobel
Keyword(s):  
Woody Plants ◽  
Forest Communities ◽  
Fire Seasonality

Wyniki oznaczeń taksonomicznych szczątków drewna

2020 ◽  
pp. 105-106
Author(s):  
Grzegorz Skrzyński
Keyword(s):  
Pinus Sylvestris ◽  
Human Activity ◽  
Scots Pine ◽  
Woody Plants ◽  
The Other ◽  
Taxonomic Identification ◽  
Forest Communities ◽  
Widespread Occurrence ◽  
Przeworsk Culture ◽  
High Share

A number of samples collected during exploration of archaeological features from the Przeworsk culture cremation cemetery were submitted for xylological examination. The samples contained poorly preserved charred remains of wood, which were subjected to taxonomic identification. Anthracological analyses allowed four taxa of woody plants to be identified, with the predominant share of remains belonging to Scots pine Pinus sylvestris. The high share of pine wood fragments may indicate selective acquisition of this species as a material for building funeral pyres. On the other hand, it may reflect the widespread occurrence of this species in the nearby forest communities, which were shaped by human activity.

scholarly journals ZONAL FOREST COMMUNITIES AND FOREST ZONING OF WESTERN SIBERIA (RUSSIA)

2018 ◽  
Vol 49 (6) ◽  
Author(s):  
Al A. Myasnikov
Keyword(s):  
Species Composition ◽  
Economic Efficiency ◽  
Woody Plants ◽  
Forest Cover ◽  
Western Siberia ◽  
Economic Assessment ◽  
Forest Resources ◽  
Forest Communities ◽  
Forest Distribution ◽  
The Given

Forests of Siberia are heterogeneous in species composition, productivity, types and nature of renewability. They are also heterogeneous in patterns of forest distribution on different categories of land, marshes, bare mountains, meadows and percentage of forest cover. This research investigates the main types of woody plants and geographical distribution of forest communities in Western Siberia. The forest zoning of Western Siberia was analyzed to reveal the features of zonal formation of forest biogeocenoses. Forest zoning and ecological and economic assessment of the productivity of forest communities within zones and regions make the basis for outlining the strategic priorities in the given territory, and help to develop a system of forestry and timber processing activities aimed to improve ecological and economic efficiency of forest resources.

Riparian forest communities and their role in nutrient conservation in an agricultural watershed

1987 ◽  
Vol 2 (3) ◽  
pp. 114-121 ◽  
Author(s):  
Joseph L. Fail ◽  
Bruce L. Haines ◽  
Robert L. Todd
Keyword(s):  
Woody Plants ◽  
Riparian Forest ◽  
Test Site ◽  
Riparian Forests ◽  
Nutrient Concentrations ◽  
Agricultural Practice ◽  
Forest Communities ◽  
Production Rates ◽  
Accretion Rates ◽  
Agricultural Areas

AbstractRiparian forests situated adjacent to agricultural uplands were studied to test the hypothesis that riparian forests intercept and utilize nutrients lost from these uplands. Production rates, tissue nutrient concentrations, and nutrient accretion rates of woody plants were compared between sites that were contiguous to agricultural areas (test sites) and sites that were separated from agricultural areas by grass buffer zones (reference sites). Net primary production was 10,344 kg ha–1yr–1, but trees within a riparian forest that received runoff directly from a pigpen (test site) had production rates that were 2.5 times higher than the average for all other sites. Above ground forest nutrient accretion rates were also highest at the pigpen test site. Woody plants in test site forests had, on the average, higher branch wood and leaf nutrient concentrations than plants in reference site forests. The data provide evidence that riparian forest communities within agricultural environments absorb and retain nutrients lost from agricultural uplands. As such they are important components of agricultural ecosystems helping to maintain acceptable stream water quality. It is suggested that ecologically sound agricultural practice should include longterm maintenance of natural riparian vegetation zones within agricultural areas.

SURFACE AREA RELATIONS OF WOODY PLANTS AND FOREST COMMUNITIES

1967 ◽  
Vol 54 (8) ◽  
pp. 931-939 ◽  
Author(s):  
R. H. Whittaker ◽  
G. M. Woodwell
Keyword(s):  
Surface Area ◽  
Woody Plants ◽  
Forest Communities

New Invention Uproots Woody Plants

1989 ◽  
Vol 7 (2) ◽  
pp. 77-78
Author(s):  
Tom Ness
Keyword(s):  
Woody Plants

Species specificity of woody trees adaptation at technogenically transformed urbanhabitats of the Kyiv megalopolisis

2014 ◽  
Vol 26 (3-4) ◽  
pp. 42-61
Author(s):  
O. G. Lucyshyn ◽  
I. K. Teslenko
Keyword(s):  
Woody Plants ◽  
Sugar Maple ◽  
Horse Chestnut ◽  
Tilia Cordata ◽  
Technogenic Pollution ◽  
Acer Platanoides ◽  
Norway Maple ◽  
Na Ions ◽  
High Concentrations ◽  
Lombardy Poplar

The recent ecological situation of Kyiv megalopolis has a special specific of environment technogenic pollution as a chemical features and content of polluting phytotoxicants. During 2007–2012, our observation revealed what the most dangerous factors which have harm impact on the street woody plants are the huge concentration of phytotoxic elements (Na+, Cl-, Pb2+, Cd2+). Nowadays, the technogenic impact on the megalopolyisis surrounding comes to the dangerous, even, catastrophic level. The main reason of total and chloral necrose of leaves, the summer defoliation of crown and major tree's death is the over pollution of the soil and plant's phytomass by phytotoxic elements, the concentration of which by standards evaluation and by trees reactions are critical and exists at the level of adaptation possibility and survival. The main sources of Pb2+ and Cd2+ ions are transport outcomes (> 90 % of total technogenic pollution). The increasing of Pb2+ and Cd2+ in the soil is depended from intensivity of transport outcomes, using of ethylated petrol, and location of trees along roads as well as from the trees species. Continuously increasing of number of cars at the city streets is accompanying with similar increasing of ions concentration. Thus, in the soil around root system of street woody plants, depending from their location along roads, the concentration of Pb2+ (moving form) is between 41,7 (I. Kudri str.) and 102,6 mg\kg of soil (Nauki avenue). It exceeds the maximum permissible concentration (MPC), which is 20,8–51,3 mg\kg of soil. Next, for Norway maple (Acer platanoides) the concentration of Pb2+ in the soil varies from 41,7 to 80,5 mg / kg of soil in the area of the root system and it is around 20,8–40,2 MPC. In the leaves of this tree it is 7,83–13,5 mg / kg of dry mass (MPC is 15,8–27,0). For the horse chestnut (Aedculus hippocastanum) at the Nauka avenue, the concentration of plumbum in the root is 13,4 mg / kg (MPC is 26,8), in the cortex – 17,7 mg / kg (MPC is 35,4), in leaves – 8,21 mg / kg (MPC is 16,4), which by the normative evaluation are the critical concentrations. The source of Na+ and Cl-, which is a new factor for Kyiv megalopolis, is irregular load of high concentrations of industrial salt NaCl into the environment, as a way against black ice in winter time, where the Na+ ions ( mobile form) is in the high concentrations in leaves (0,76 % for Norway maple (Acer platanoides) on the I. Kudri str., 1,28 % – small-leaved linden (Tilia cordata) at the 40-richya Zhovtnya ave, 2,0 % – horse chestnut (Aedculus hippocastanum) at the Nauki ave), those are exceeded the concentration of the element comparing to the control test object, respectively, in 10,6, 12,8 and 5,0 times. Na+ ions are an aggressive phytotoxins and the main factor of leaves necrose of tree crown (within 70–100 % necrosis leaves in the crown). Degradation and total reduction of the specific weight of plants in the megalopolis environment are decrease the cleaning role of the street tree plants, which are the main alive filters for soil and air cleaning, as well as the main bioaccumulators and detoxicants of harm substances of anthropogenic pollution. Species adaptive specificity is revealed at the bioaccumulation level and the selective locality of phytotoxic elements (Na+, Cl-, Pb2+, Cd2+, agile form) in technourbanhabitats-pic conditions, there dominated bioaccumulation and localization of Na+ ions by trees assimilative system is caused the adaptive orientation of endogenic and intraspecific variability of phytoindicative morphophysiologic features of plants functional condition under the stressing factors. This also is defined the sensitivity of small-leaved linden (Tilia cordata Mill.), norway maple (Acer platanoides L.) and horse chestnut (Aesculus hippocastanum L.) to the big concentration of potassium as the most danger one for the plant survival. The biggest accumulation of Na+ ions at the roots of Lombardy poplar (Populus pyramidalis Roz.), Bolle's poplar (Populus bolleana Lauche) and sugar maple (Acer saccharinum L.) is lead to a higher resistance of their assimilation system. At the technourbohabitate-pic conditions, the level of realization of ontogenetic and phylogenetic adaptive capacity of the sensitive species of trees is harmfully low (21,3–44,3 %). It is at the level of survival/death of plants. The street Lombardy poplar, Bolle's poplar and sugar maple, despite of more higher level of their adaptation (68,4–87,7 %), still also can't fully adapt to the critical levels of technogenic pollution of megalopolis environment. 

Sign in / Sign up

Export Citation Format

Share Document