Weed activity in arable plant communities in the Central Urals (Sverdlovsk oblast)

Climate models project overall a reduction in rainfall amounts and shifts in the timing of rainfall events in mid-latitudes and sub-tropical dry regions, which threatens the productivity and diversity of grasslands. Arbuscular mycorrhizal fungi may help plants to cope with expected changes but may also be impacted by changing rainfall, either via the direct effects of low soil moisture on survival and function or indirectly via changes in the plant community. In an Australian mesic grassland (former pasture) system, we characterised plant and arbuscular mycorrhizal (AM) fungal communities every six months for nearly four years to two altered rainfall regimes: i) ambient, ii) rainfall reduced by 50% relative to ambient over the entire year and iii) total summer rainfall exclusion. Using Illumina sequencing, we assessed the response of AM fungal communities sampled from contrasting rainfall treatments and evaluated whether variation in AM fungal communities was associated with variation in plant community richness and composition. We found that rainfall reduction influenced the fungal communities, with the nature of the response depending on the type of manipulation, but that consistent results were only observed after more than two years of rainfall manipulation. We observed significant co-associations between plant and AM fungal communities on multiple dates. Predictive co-correspondence analyses indicated more support for the hypothesis that fungal community composition influenced plant community composition than vice versa. However, we found no evidence that altered rainfall regimes were leading to distinct co-associations between plants and AM fungi. Overall, our results provide evidence that grassland plant communities are intricately tied to variation in AM fungal communities. However, in this system, plant responses to climate change may not be directly related to impacts of altered rainfall regimes on AM fungal communities. Our study shows that AM fungal communities respond to changes in rainfall but that this effect was not immediate. The AM fungal community may influence the composition of the plant community. However, our results suggest that plant responses to altered rainfall regimes at our site may not be resulting via changes in the AM fungal communities.

Remote estimation techniques of biophysical parameters of forest plant communities and agrophytocenoses within different landscape and climatic zones of Ukraine

Kosmìčna nauka ì tehnologìâ ◽

10.15407/knit2015.04.081 ◽

2015 ◽

Vol 21 (4(95)) ◽

pp. 81-83

Author(s):

V.I. Lyalko ◽

◽

M.O. Popov ◽

V.O. Yatsenko ◽

O.I. Sakhatsky ◽

...

Keyword(s):

Plant Communities ◽

Biophysical Parameters ◽

Climatic Zones ◽

Estimation Techniques ◽

Remote Estimation

Variation of plant communities along an elevation gradient in the Guandi Mountains, North China

Community Ecology ◽

10.1556/comec.5.2004.2.10 ◽

2004 ◽

Vol 5 (2) ◽

pp. 227-233 ◽

Cited By ~ 9

Author(s):

J.T. Zhang ◽

T.G. Chen

Keyword(s):

Plant Communities ◽

North China ◽

Elevation Gradient

Establishing knowledge-based and digital cooperation between small and medium-sized businesses, science and the State through a cluster approach

Regional Economics Theory and Practice ◽

10.24891/re.18.11.2089 ◽

2020 ◽

Vol 18 (11) ◽

pp. 2089-2110

Author(s):

A.V. Ivanchenko ◽

E.S. Mezentseva

Keyword(s):

Financial Support ◽

Triple Helix ◽

The State ◽

Sverdlovsk Oblast ◽

Cluster Approach ◽

Innovation Development ◽

Economic Agents ◽

Knowledge Based ◽

Cluster Network ◽

Digital Development

Subject. This article discusses the issues of innovative and digital development of the economy. Objectives. The article aims to justify the benefits of cluster cooperation and networking between different structures. Methods. For the study, we used systems, logical, structural, and comparative analyses, generalization and statistical methods, and the cluster-network and institutional approaches. Results. The article substantiates the role and position of small business in the innovation development of the Sverdlovsk Oblast and identifies trends of innovation and digital advancement. Conclusions. The cluster theory, supplemented with the Triple Helix concept, can be a basis for rationale for effective ways of integrating economic agents. Small innovative business has significant potential for sustainability, but it needs additional financial support from the State.

Methods for saving the productivity of slope lands

сборник статей всероссийской научной конференции с международным участием "Растениеводство и луговодство" ◽

10.26897/978-5-9675-1762-4-2020-57 ◽

2020 ◽

Author(s):

N.A. Batyakhina N.A. ◽

Keyword(s):

Forest Soil ◽

Crop Rotation ◽

Plant Communities ◽

Crop Production ◽

Phosphorus Content ◽

Gray Forest Soil ◽

Conservation Tillage ◽

Multicomponent Mixtures

The influence of various annual multicomponent mixtures in the crop rotation link on its productivity and fertility of gray forest soil is shown. The complexity of the structure of plant communities has reduced the share of weeds in crop production annual mix, 2.6-3.7% and conservation tillage for wheat has increased by 2.5 times the phosphorus content is 1.9 times the potassium, 12% increased productivity.