No abstract

This paper reviews the use of modern 3D image-based and Light Detection and Ranging (LiDAR) methods of surface reconstruction techniques for high fidelity surveys of small rock outcrops to highlight their potential within structural geology and landscape protection. LiDAR and Structure from Motion (SfM) software provide useful opportunities for rock outcrops mapping and 3D model creation. The accuracy of these surface reconstructions is crucial for quantitative structural analysis. However, these technologies require either a costly data acquisition device (Terrestrial LiDAR) or specialized image processing software (SfM). Recent developments in augmented reality and smartphone technologies, such as increased processing capacity and higher resolution of cameras, may offer a simple and inexpensive alternative for 3D surface reconstruction. Therefore, the aim of the paper is to show the possibilities of using smartphone applications for model creation and to determine their accuracy for rock outcrop mapping.

This research was focused on the study of visual exposure evolution in the locality of the Drátenická skála nature monument (in the Czech Republic) and the surrounding forest complex in terms of history and through modelling for further possible stand development. The local forests underwent conversion from a natural fir-beech composition to an intensive spruce monoculture with few insect pests or windbreak events to an actual bark beetle infestation. Historic maps, landscape paintings, photographs, and orthophotos served as the basic materials for the illustration of the past situation. Further development was modelled using canopy height models and spectral properties captured by unmanned aerial vehicles (UAVs). As an example, the possible situation of total mortality among coniferous spruce trees after a bark beetle outbreak was modelled. Other options and a practical use of such preprocessed data are, for example, a model for opening and transforming the stands around the rock as one of the ongoing outcrop management trends in the protected landscape area (PLA) of Žďárské vrchy.

Geodiversity has an irreplaceable significance for both biodiversity and for human society as it has numerous functions and offers various benefits and services. These have been already recognized and assessed by using numerous approaches and methods (e.g., geosite assessment methods, geodiversity indexes, and evaluation of geodiversity functions within the concept of ecosystem services). Nearly all these procedures were elaborated by professionals in the Earth sciences or related domains. The assessment of geodiversity functions and services within nature conservation by the public was not the subject of detailed research yet (with an exception of geotourist assessment). This communication presents the results of a pilot research that is focused on the analysis and interpretation of the public opinion on geodiversity and geoconservation. The data were collected by using the semi-structured questionnaire, and based on them, the interpretation was done and comparison or confrontation with original hypotheses was undertaken.

No abstract

Detailed, three-dimensional modeling of trees is a new approach in botanical taxonomy. Representations of individual trees are a prerequisite for accurate assessments of tree growth and morphological metronomy. This study tests the abilities of 3D modeling of trees to determine the various metrics of growth habit and compare morphological differences. The study included four species of the genus Dracaena: D. draco, D. cinnabari, D. ombet, and D. serrulata. Forty-nine 3D tree point clouds were created, and their morphological metrics were derived and compared. Our results indicate the possible application of 3D tree point clouds to dendrological taxonomy. Basic metrics of growth habit and coefficients derived from the 3D point clouds developed in the present study enable the statistical evaluation of differences among dragon tree species.

A complex approach to geodiversity and landscape in order to foster geoconservation and develop geotourism and geoeducation is usually more effective than isolated protection and promotion of geoheritage sites without wider context. A Geodiversity Action Plan (GAP) represents a reasonable tool for how to follow these goals in cooperation with local stakeholders. This specific document is not focused only on an inventory of sites of Earth science interest in an area, but encompasses all geodiversity (geological, geomorphological, soil and hydrological features, processes, systems and relationships). As geoconservation often goes hand in hand with education, sustainable tourism and promotion, the GAP includes practical proposals for management and rational use of the area’s geodiversity and geoheritage. This complex approach is needed as it provides a complement to the site-oriented protection or management and, moreover, it can be perceived as coherent with a geoethical approach. The paper presents a case study from Moravian-Slovak border (a central part of Bílé Karpaty/Biele Karpaty Mountains) where the proposal for GAP (including inventory, assessment and management measures) was elaborated together with local authorities, schools and other stakeholders.

Though botanical gardens are an important and widely visited component of urban green spaces (UGS) worldwide, their pollution is rarely studied. The aim of this study was to assess botanical garden soil contamination and ecotoxicity and to evaluate whether urban botanical gardens are more contaminated than urban parks. Soil assessments showed serious contamination with Cd, Pb and Zn, emitted predominantly by traffic, agrochemicals and past construction and demolition waste. The discovery of hazardous historical ecological burden in the UGS calls for the necessity of detailed surveys of such areas. Despite prevailing moderate-to-heavy contamination, the soil was only slightly ecotoxic. Maximum immobilisation inhibition of Daphnia magna reached 15%. Growth of Sinapis alba L. was predominantly stimulated (73%), and Desmodesmus subspicatus Chodat was exclusively stimulated, possibly due to soil alkalinity and fertiliser-related nutrients. The hypothesis of a higher contamination of urban botanical gardens compared to urban parks was confirmed. However, urban parks can face a greater risk of soil ecotoxicity, hypothetically due to decreased activity of soil organisms resulting from adverse soil conditions caused by active recreation. The results highlight the need for an increased focus on botanical and ornamental gardens when assessing and managing UGS as areas potentially more burdened with contamination.