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The impact of management on ground vegetation in Riga’s urban forests
2017
Kalnins, A., Latvia Univ. of Agriculture, Jelgava (Latvia) | Straupe, I., Latvia Univ. of Agriculture, Jelgava (Latvia) | Liepa, L., Latvia Univ. of Agriculture, Jelgava (Latvia)
Urban forests provide ecological and social functions and significantly improve esthetical value of these ecosystems. These forests also function as recreational areas for urban residents. The aim of this study was to assess the influence of understory cutting of different intensity on vegetation and coincidence with Myrtillosa forest type in Mežaparks, Riga. In total nine study sites were established: three sites adjacent to roads where regular undergrowth management is practiced, three adjacent sites to edges of the pathways, where undergrowth management is practiced only occasionally and three adjacent sites to roads where there is no management activity at all. Combined 54 sample plots were created (each sized 10 × 10 m, area 100 m2 ), where vegetation survey was done using Braun-Blanquet method. This study showed that with an increase in the intensity of undergrowth management, in general, the species richness and their coverage increases, or more specifically, the number of herbaceous and moss species increases, but the occurrence of shrub species decreases. In all study sites we observed the development of synantrophic species, especifically, the development of fructification which was indicated by the following species: Sambucus nigra L., Sambucus racemosa L., Amelanchier spicata Lam. If management intensity decreases, the proportion of competitor species decreases, but the proportion of CSR strategy type species stabilizes.
Show more [+] Less [-]The assessment of vegetation in unmanaged nemoral forests in Zemgale [Latvia]
2017
Broka, D., Latvia Univ. of Agriculture, Jelgava (Latvia) | Liepa, L., Latvia Univ. of Agriculture, Jelgava (Latvia) | Straupe, I., Latvia Univ. of Agriculture, Jelgava (Latvia)
Zemgale geobotanical region historically was dominated by large broad-leaved forests, but last centuries the high anthropogenic pressure on these territories has reduced the area of these forests. In fragmented landscape small patches of natural broad-leaf forests are protected to preserve the forest structural features, which also function as habitats for rare and protected species. The aim of this study was to compare the natural broad-leaf forest habitats and structural elements and vegetation in woodland key habitats in production forests and protected areas (nature park ''Tērvete'' and nature reserve ''Ukru gārša'') in Zemgale. In total, 12 sample plots were established (the size of sample plot 0.1 ha) in Aegopodiosa forest type. In all sample plots forest structural features were measured and vegetation survey using Braun-Blanquet method was made. In this study, we found that average amount of dead wood varies between 78.7 m**3 haE-1 in woodland key habitats in production forests and 133.0 m**3 haE-1 special protected areas. Considerable amount of broad-leaf natural forests represented by nemoral species (50 – 58% of species richness), which corresponds to these forest type communities in the region.
Show more [+] Less [-]The relation of green infrastructure and tourism in urban ecosystem
2018
Straupe, I., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Liepa, L., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia)
Green infrastructure (GI) is a strategically planned network of high quality natural and semi-natural areas and provides a range of ecosystem services and protects biodiversity in urban settings. It is very important to increase understanding of the role of GI from a scientific and a socio-economic perspective. The main goal was to understand and assess the ways that tourists use from experiencing urban green infrastructure in the cities they visit. An interview questionnaire survey took place among tourists of the following countries and cities: Latvia (Riga and Jelgava) and Portugal (Lisbon and Faro). The questionnaire includes perception, psychological aspects and preferences, behaviour and activities and general questions as well as biographical information about tourists. The study represents that no significant differences have been found between respondent groups in Latvia and Portugal. The results of the survey show that in future there is a need to improve the linkage between GI and social-cultural activities in cities. Therefore, studies for tourists’ perceptions, preferences and uses of GI will provide the alternative management approaches for urban planning and tourism development in future.
Show more [+] Less [-]The compositional solutions of the historical parks in Latvia
2016
Ziemelniece, A., Latvia Univ. of Agriculture, Jelgava (Latvia)
The information about gardens of the Duchy of Courland in the 17th century is scarce and fragmentary, as part of documents is lost or exported abroad during the war. The time of the Duchy and its baroque gardens is attributed to reign of E. J. Biron in the first half of the 18th century, when impressive palace ensembles were created the help of architects F. B. Rastrelli and S. Jensen, building of summer residences in Rundāle, Vircava, Svēte, Luste. They served as summer amusement gardens or parks. In their arrangement, a compositional connection with the palace, the front courtyard, outbuildings and the garden was sought. These summer residences were located in rural plain areas, thus, the features of natural area - water, floodplains, terrain, nature of plantations and materials were used. The choice of planting materials was influenced by the climatic conditions - harsh winters, short summers, late spring frosts or early autumn frosts. Therefore, in the Duke’s time gardens, there are no delicate plants such as jews, boxwood plants, peach and mandarin fruit trees imported from the Western Europe. The local trees and shrubs, fruit trees, spice plants were used, vegetable beds made. The study examines two of the Duchy’s summer residences at Vircava (Wūrzau) and Svēte (Swethof), the study of which, as already mentioned, is made difficult due to the relatively scarce information.
Show more [+] Less [-]The influence of active leisure areas on the visual quality of the urban environment
2024
Janpavle, Ilze | Īle, Una
In planning active leisure areas, the main emphasis is placed on the elements used in the infrastructure of childrenʼs playgrounds and recreational sports areas, their functionality, and compliance with various safety requirements in the public outdoor space. However, there are no uniform requirements for the aesthetics of the elements or the visually coherent inclusion of such infrastructure in the surrounding environment and existing infrastructure. The study aims to evaluate the impact of the infrastructure of active leisure areas on the visual quality of the public outdoor space and possible improvements by choosing alternative elements with a different visual design but similar functionality and to distinguish the main characteristic features for determining the visual quality of elements and characterize the impact on the surrounding environment. The research uses the descriptive or monographic method to collect and analyse the elements and functionality included in the surveyed territories in the summer and autumn of 2022, evaluating the aesthetic quality of the elements in active leisure areas in the public outdoor space of Riga and Tallinn. The studyʼs main results reflected several problems related to integrating active recreation areas into the surrounding environment. They highlighted issues related to the quality of the existing environment, which can be described as insufficient or low and which characterizes the planned development as coming into conflict with the existing environmentʼs aesthetic qualities or their absence.
Show more [+] Less [-]Urban and peri-urban forest area stakeholder identification, case study of ‘Bernāti’ and ‘Ogres Zilie kalni’ nature parks
2024
Kraukle, Ieva | Jūrmalis, Edgars | Stokmane, Ilze | Vugule, Kristīne
Stakeholders and involved parties are crucial in a proper management of forest areas, more so in nature park areas. Urban nature areas and more remote peri-urban areas have objectively the most complex management issues due to the potentially high density of visitors and a diverse range of stakeholders. Such areas can also be valuable nature conservation and biodiversity hotspots, further making stakeholder interactions more complex. In this research, we conduct stakeholder identification for two case study areas – an urban forest nature park and a peri-urban forest nature park, with the aim of developing detailed lists of involved parties, including both public and private entities. We identified three main blocks of stakeholders (regulatory, usage, management), and detailed each group and sub-group for the case study areas. Our main results and conclusions include the identification of minor differences particularly explained by geographical and socio-economic contexts for each of the areas, with the regulatory stakeholder group overlapping the most between the two areas. The potential use of such analysis can improve or develop cooperation between previously unobserved stakeholders, and in research contexts, allow for a greater input from various parties that could have been missed in a more detailed analysis of a research area.
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