scholarly journals Ground Vegetation Modeling through Functional Species Groups and Patches in the Forest Floor

2015 ◽  
Vol 10 (1) ◽  
pp. 15-33
Author(s):  
Л.Г. Ханина ◽  
L.G. Khanina
Keyword(s):  
Functional Groups ◽  
Forest Floor ◽  
Vascular Plants ◽  
Forest Growth ◽  
Plant Functional Groups ◽  
Middle Taiga ◽  
Ground Vegetation ◽  
Published Data ◽  
Spatial Unit ◽  
Field Investigations

We have developed a system of plant functional groups for modeling dynamics of forest ground vegetation. Ecological and coenotic traits of species together with species life form and biomass values were used to classify species into the functional groups. Ground vegetation patches dominated by species of different plant functional groups were distinguished in the forest floor. We have characterized biomass of these patches by applying of statistical analysis of published data and results of our own field investigations combined into the database "Biomass". Biomass of vascular plants and bryophytes quite well differs between the patches. Variations of above and below ground biomass of vascular plants are minimal within the types of forest floor patches as compared to their variations within the plant functional groups and forest types. Database "Elements" on element concentrations of herbaceous species and cryptogams was also developed on the basis of results of field investigations in the North and the Middle Taiga. The functional groups of species well differ on the concentration of elements in plants forming a group. We have proposed a conceptual model of dynamics of ground forest vegetation; a model compatible with the individual-based EFIMOD model of forest growth and elements cycles in forest ecosystems. Spatial unit of the ground vegetation model is the same as spatial unit of the EFIMOD (0.5×0.5 м); it is a patch of the forest floor dominated by species from one or more functional groups.

Long-term effects of a forest amelioration experiment

2002 ◽  
Vol 32 (1) ◽  
pp. 120-128 ◽  
Author(s):  
R Jandl ◽  
F Starlinger ◽  
M Englisch ◽  
E Herzberger ◽  
E Johann
Keyword(s):  
Forest Floor ◽  
Roe Deer ◽  
Mineral Soil ◽  
Forest Growth ◽  
Stem Volume ◽  
Ground Vegetation ◽  
Long Term Effects ◽  
Significant Treatment ◽  
Stand Conversion ◽  
A Site

We evaluated the soil chemistry, plant species composition, and forest growth rate on a site where a site amelioration project had been realized 30 years earlier. The initial goal of the project was the improvement of a site that had been degraded by litter raking. We wanted to know which amelioration method produced a sustainable result and how different treatments might be rated by today's standards. Treatments included fertilization, underplanting with N-fixing plants, and a combination of both. The amelioration was combined with stand conversion by means of natural regeneration and spruce underplanting. In all treatments, a spruce-dominated stand replaced the secondary pine stand. The biomass of the formerly recalcitrant forest floor (143 Mg·ha–1) was reduced by 30 to 50% in treated plots, thereby reducing the total soil pool of C, N, and exchangeable cations. The mineral soil of treated plots was enriched with N, Ca, and Mg. An increase in pH was restricted to the forest floor. The C pool of treated soils was much smaller than that of the control plots. However, the loss from the soil was at least partly offset by increased growth rates of the aboveground tree biomass. In treated plots, the stem volume was more than twice that of control plots (38.3 m3). Soil chemical data and the composition of the ground vegetation suggest that even the control plots have changed compared with pre-treatment conditions. Comparison of different blocks of the experiment suggests that the exclusion of roe deer (Capreolus capreolus) by fencing was the most significant treatment required for successful stand conversion. Prior to fencing, deer browsing inhibited the establishment of a new stand.

Plant community C:N:P stoichiometry is mediated by soil nutrients and plant functional groups during grassland desertification

2021 ◽  
Vol 162 ◽  
pp. 106179
Author(s):  
Zhiying Ning ◽  
Xueyong Zhao ◽  
Yulin Li ◽  
Lilong Wang ◽  
Jie Lian ◽  
...  
Keyword(s):  
Functional Groups ◽  
Plant Community ◽  
Soil Nutrients ◽  
Plant Functional Groups ◽  
C:N:P Stoichiometry

Social network analysis of sheep grazing different plant functional groups

2018 ◽  
Vol 74 (1) ◽  
pp. 129-140 ◽  
Author(s):  
Maria D. Yiakoulaki ◽  
Nikolaos D. Hasanagas ◽  
Eleni Michelaki ◽  
Eleni T. Tsiobani ◽  
Ioannis E. Antoniou
Keyword(s):  
Social Network ◽  
Social Network Analysis ◽  
Network Analysis ◽  
Functional Groups ◽  
Plant Functional Groups ◽  
Sheep Grazing

scholarly journals Traditional plant functional groups explain variation in economic but not size‐related traits across the tundra biome

2018 ◽  
Author(s):  
H. J. D. Thomas ◽  
I. H. Myers‐Smith ◽  
A. D. Bjorkman ◽  
S. C. Elmendorf ◽  
D. Blok ◽  
...  
Keyword(s):  
Functional Groups ◽  
Plant Functional Groups

Dynamics of plant functional groups composition along environmental gradients in the typical area of Yi-Luo River watershed

2011 ◽  
Vol 10 (65) ◽  
pp. 14485-14492 ◽  
Author(s):  
Liao Bing Hua ◽  
Ding Sheng Yan ◽  
Liang Guo Fu ◽  
Guo Yi Li ◽  
Tian Li ◽  
...  
Keyword(s):  
Functional Groups ◽  
Environmental Gradients ◽  
Plant Functional Groups ◽  
River Watershed

scholarly journals Mowing alters nitrogen effects on the community-level plant stoichiometry through shifting plant functional groups in a semi-arid grassland

2020 ◽  
Vol 15 (7) ◽  
pp. 074031
Author(s):  
Shijie Li ◽  
Fuwei Wang ◽  
Mengfei Chen ◽  
Zhengyi Liu ◽  
Luyao Zhou ◽  
...  
Keyword(s):  
Functional Groups ◽  
Community Level ◽  
Plant Functional Groups ◽  
Semi Arid

scholarly journals Effects of High Impact Grazing on Species Diversity and Plant Functional Groups in Grasslands of Northern Argentina

2018 ◽  
Vol 10 (9) ◽  
pp. 3153
Author(s):  
Ditmar Kurtz ◽  
Marcus Giese ◽  
Folkard Asch ◽  
Saskia Windisch ◽  
María Goldfarb
Keyword(s):  
Species Composition ◽  
Functional Groups ◽  
Plant Species ◽  
High Impact ◽  
Sustainable Land Use ◽  
Plant Functional Groups ◽  
Seasonal Effects ◽  
Plant Species Composition ◽  
Wiener Diversity Index ◽  
The Impact

High impact grazing (HIG) was proposed as a management option to reduce standing dead biomass in Northern Argentinean (Chaco) rangelands. However, the effects of HIG on grassland diversity and shifts in plant functional groups are largely unknown but essential to assess the sustainability of the impact. During a two-year grazing experiment, HIG was applied every month to analyze the seasonal effects on plant species composition and plant functional groups. The results indicate that irrespective of the season in which HIG was applied, the diversity parameters were not negatively affected. Species richness, the Shannon–Wiener diversity index and the Shannon’s equitability index did not differ from the control site within a 12-month period after HIG. While plant functional groups of dicotyledonous and annual species could not benefit from the HIG disturbance, C3-, C4-monocotyledonous and perennials increased their absolute and relative green cover. Our results suggest that HIG, if not applied in shorter frequencies than a year, neither alters diversity nor shifts the plant species composition of the grassland plant community, but instead it promotes previously established rather competitive species. HIG could therefore contribute as an alternative management practice to the sustainable land use intensification of the “Gran Chaco” grassland ecosystem and even counteract the encroachment of “low value” species.

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