Plant communities, populations and individuals have distinct responses to short‐term warming and neighbour biomass removal in two montane grasslands

2020 ◽  
Author(s):  
Travis G. Britton ◽  
Mark J. Hovenden ◽  
Meagan Porter ◽  
Anna Flittner ◽  
Rose Brinkhoff ◽  
...  
Keyword(s):  
Plant Communities ◽  
Short Term ◽  
Biomass Removal ◽  
Montane Grasslands

scholarly journals Weather fluctuations drive short‐term dynamics and long‐term stability in plant communities: A 25‐year study in a Central European dry grassland

2020 ◽  
Vol 31 (5) ◽  
pp. 711-721 ◽  
Author(s):  
Felícia M. Fischer ◽  
Kryštof Chytrý ◽  
Jakub Těšitel ◽  
Jiří Danihelka ◽  
Milan Chytrý
Keyword(s):  
Plant Communities ◽  
Short Term ◽  
Dry Grassland ◽  
Central European ◽  
Term Stability ◽  
Long Term Stability

scholarly journals Community Sporobolus Cryptandrus (Torr.) A. Gray in the Northern Part of Volga-Akhtuba Floodplain

2018 ◽  
pp. 5-14
Author(s):  
Mikhail Maltsev ◽  
Vadim Sagalaev
Keyword(s):  
Plant Communities ◽  
Early Stage ◽  
Floristic Composition ◽  
Summer Period ◽  
Short Term ◽  
River Bed ◽  
Volgograd Region ◽  
Cereal Species ◽  
Steppe Communities ◽  
Sporobolus Cryptandrus

On the territory of the Volga-Akhtuba floodplain, plant communities including Sporobolus cryptandrus are found. This is an adventitious species from North America that came to Europe in the early 20th century. In Russia, Sporobolus cryptandrus was first discovered in 1998 on the territory of the Volgograd region. Currently, Sporobolus cryptandrus is actively distributed throughout the Volgograd regions. Probably, Sporobolus cryptandrus was introduced together with imported grain and mixed fodders. This species was originally built into the plant communities of sandy steppes. In this paper, we describe the S. cryptandrus communities that we found in the Volga-Akhtuba floodplain. The descriptions were carried out at two sites in the northern part of the floodplain. Geobotanical sites are located on the nearbed sand banks along the river bed. Akhtuba. Completed 19 geobotanical descriptions. All descriptions were accumulated in an electronic database based on the TURBOVEG program. Communities of Sporobolus cryptandrus are characterized by poor floristic composition, low overall projective cover. Habitats of communities are subject to short-term flooding in the spring-summer period, as well as cattle grazing. In communities dominated: Sporobolus cryptandrus, Secale sylvestre, Artemisia marschalliana. We assume that these phytocenoses can be classified as cl. Artemisietea tchernievianae Golub 1994. Sporobolus cryptandrus has shown itself as an agriophyte and a transformer species that can completely replace the dominant cereal species in sand steppe communities or be introduced to pioneer communities at an early stage of overgrowth. Settling of this adventive species can lead to the loss of the natural appearance of the vegetation of sandy substrates. Propagation processes need further observation and analysis.

Experience in assessing the dynamic state of vegetation based on a large-scale map of modern vegetation (on the example of the area “Levashovskiy les”, St. Petersburg)

2019 ◽  
pp. 39-56 ◽  
Author(s):  
E. A. Volkova ◽  
V. N. Khramtsov
Keyword(s):  
Plant Communities ◽  
Forest Fires ◽  
Vegetation Cover ◽  
Large Scale ◽  
Anthropogenic Impacts ◽  
Dynamic State ◽  
Anthropogenic Factors ◽  
Natural State ◽  
Short Term

The article is devoted to the vegetation mapping of the “Levashovskiy les”— a large forest-mire massif located in the northern part of St. Petersburg (Fig. 1). It continues a series of articles on the vegetation of existing and proposed specially protected natural areas of St. Petersburg (Volkova, Khramtsov, 2018). Large-scale map of modern vegetation (Fig. 2) is presented; the map legend includes 67 main numbers, the signs and numeric indexes at the numbers made it possible to show 93 mapping units (associations and their variants). Brief description of the main types of plant communities (spruce, pine, birch, aspen, gray alder and black alder forests; raised bogs, transitional mires and fens, floodplain and upland meadows) reveals the content of the legend. Vegetation cover is characterized by the dominance of secondary communities. The main anthropogenic impacts on modern vegetation are following: drainage reclamation, deforestation and former agricultural use, forest fires, gas pipelines, highways. Most of the forest communities are secondary ones; they have grown under the pressure of various anthropogenic factors and at different time. Nowadays an active process of natural regeneration of conife­rous (mainly spruce) trees goes in the forests. Plant community structure and species composition were taken into account as well as their dynamic state. To assess the degree of disturbance of plant communities and the potential for their restoration, the analysis of all mapped vegetation categories with respect to their position in the ranks of restorative successions was made. Then an assessment map “Dynamic state of plant communities” (Fig. 3) was compiled. The map shows following categories of dynamic types of communities: conventionally primary; relatively long-term secondary and stable long-term secondary (Sukachev, 1938; Isachenko, 1964; Karpenko, 1965; Gribova, Isachenko, 1972); short-term secondary that were divided into 3 categories representing different stages of restorative series. Present state of the vegetation cover of the “Levashovskiy les” can be determined by the ratio of the areas of conventionally primary and secondary communities. Areal analysis of dynamic categories of plant communities showed that only a bit more than 20 % of the territory is occupied by conventionally primary communities and about 60 % – by short-term secondary ones with good restorative potential. Without strong anthropogenic and natural disturbances, a significant part of the disturbed plant communities will be able to self-restore to their natural state. The establishment of a specially protected natural area as well as the regulation of conservation regime will support restoration process of nature ecosystems.

scholarly journals Fire rather than nitrogen addition affects understory plant communities in the short term in a coniferous‐broadleaf mixed forest

2018 ◽  
Vol 8 (16) ◽  
pp. 8135-8148 ◽  
Author(s):  
Mengjun Hu ◽  
Yanchun Liu ◽  
Zhaolin Sun ◽  
Kesheng Zhang ◽  
Yinzhan Liu ◽  
...  
Keyword(s):  
Plant Communities ◽  
Mixed Forest ◽  
Nitrogen Addition ◽  
Short Term ◽  
Understory Plant ◽  
Understory Plant Communities

scholarly journals Alternanthera bettzickiana (calico plant).

2020 ◽  
Author(s):  
Jeanine Vélez-Gavilán
Keyword(s):  
Plant Communities ◽  
Botanical Garden ◽  
Virgin Islands ◽  
Native Plant ◽  
Missouri Botanical ◽  
Short Term ◽  
British Virgin Islands ◽  
Disturbed Areas ◽  
Ornamental Species ◽  
Missouri Botanical Garden

Abstract There are no published reports about the invasiveness of A. bettzickiana, a cultivated herb not known from the wild other than where escaped from cultivation. In most of the countries where it occurs, it is reported as an ornamental species (Missouri Botanical Garden, 2016). In Palau, although is listed as only planted near the Capitol, it is listed as a species of possible threat without further information (Space et al., 2009). In Texas it is not considered as a threat to native plant communities, although occasionally escaping to disturbed areas near where planted (Nesom, 2009). It is reported as a short-term escape for India (Sankaran et al., 2014) and common and not invasive in Taiwan (Wu et al., 2004). It is also escaped and naturalized in the British Virgin Islands, Costa Rica, Colombia, Dominican Republic, Peru and St. Lucia (D'Arcy, 1967; Graveson, 2012; Missouri Botanical Garden, 2016), but without further details.

Short-term responses of soil nutrient dynamics and herbaceous riverine plant communities to summer inundation

Wetlands ◽  
2008 ◽  
Vol 28 (1) ◽  
pp. 232-244 ◽  
Author(s):  
A. Martijn Antheunisse ◽  
Jos T. A. Verhoeven
Keyword(s):  
Plant Communities ◽  
Nutrient Dynamics ◽  
Soil Nutrient ◽  
Short Term
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