Research, Surveys and Data Management

It is no secret that there hardly is any other issue in biology which has been full of contradiction as the species, whether as a concept, category or taxon in systematics. The continuing debate which set of individuals could be considered the species resulted in at least 35 various concepts: although most species concepts have strong implicit similarities and they in some extent overlap each other, some of them exclude others (ZACHOS 2015, 2018b). It is necessary to mention that many of them in the fact do not define what species are or should be but rather provide differently complicated approach how to delimitate them (MAYDEN 1997, QUEIROZ 1998, 2007, STEWART 2018, REYDON & KUNZ 2019). Taking into account the extent of the debate the following reflection offers only a glimpse of the topic from a point of view of nature conservation, not an exhaustive analysis. 

Every cave represents a unique natural phenomenon, preserving the complex links between living and non-living nature. They often contain paleontological findings as well as archaeological monuments connected with the development of the humans. The remains of animals get into the caves through the sinking of debris and alluvium. Some animals use caves for hibernation, others as shelters, dens, and food stores. And some find death underground after being caught in a natural trap...

Lowland wetland meadows are among the most endangered habitats in the Czech Republic. The main drivers of their decline and loss include particularly decline in traditional management measures, targeted draining, consequent overgrowing by natural self-seeding as well as spreading aggressive plant species the latter excluding wild plant and animal species there. Thus, suitable meadow wetland management should aim namely at maintaining an open character of the above habitat effectively provided by grazing and mowing.. Although it may not be apparent at first glance, these measures can also significantly affect small water bodies in the immediate vicinity of the managed area. The article presents the project entitled Management measures and assessment of their impact on meadow wetland biodiversity and it introduces the pilot results of water body hydrobiological monitoring in a meadow wetland near the village of Krumvíř (South Moravia).

The International Union of Speleology (UIS) has declared 2021 as the International Year of Caves and Karst (IYCK). Unique phenomena in our landscape have therewith received deserved attention. Of more than 2,460 karst caves in the Czech Republic, 14 are show caves. All of them are fully legally protected according to national law and in addition, most of them are also protected as important bat hibernation sites (hibernacula) at the European level pursuant to the European Union’s legislation, namely the Habitats Directive. An important pillar of nature conservation is regular monitoring of Specially Protected animal species, and this also is the case in caves.

Invasive alien species (IAS), together with natural ecosystem fragmentation, degradation, destruction and loss, growing natural-resource consumption, environmental pollution and climate change, are among the main negative factors threatening native species and the biodiversity of native ecosystems. In addition, they can cause high economic damage/financial costs or adversely affect human health. Due to the ability of IAS to spread, an isolated approach to their management at the level of individual regions or countries is usually not effective; we need a targeted and tailored strategy that transcends national borders. Therefore, Regulation (EU) No 1143/2014 of the European Parliament and of the Council on the prevention and management of the introduction and spread of invasive alien species was adopted in the European Union, which was transposed into the Czech Republic’s legal order by amending Act No. 114/1992 Gazette on Nature Conservation and Landscape Protection, and other laws related to the issue, entering into force January 1, 2022.

The agri-environmental-climate measures (AECM) announced by the Ministry of Agriculture of the Czech Republic are intended to support management methods mitigating the negative effects of intensive farming on the landscape and its inhabitants, including insects. Despite their productive nature, permanent grasslands are an important landscape component hosting a wide range of invertebrates. The right balance of production practices and compensatory measures can make a significant contribution to maintaining the diversity of grassland organisms and the ecosystem services they provide. The Nature Conservation Agency of the Czech Republic (NCA CR) has therefore commissioned a study on the effects of temporarily unmown grass strips on the diversity and abundance of meadow organisms. The aim of the study was to verify whether the retained parts of grass stands have a positive effect on the biota on common managed meadows of various sizes.

Yes, this is possible. Although computer modelling will not save the Black grouse, its outputs can significantly help in planning various practical measures in the field, regulating tourists at high-risk sites, and educating visitors. Habitat modelling, which uses the possibilities of geo-information technologies, remote sensing data, and advanced spatial analysis methods (e.g. Hirzel & le lay 2008, ElitH & leatHwick 2009), is applied significantly in the study of ecological requirements of (not only) animal species. These methods, technologies, and data allow extensive analyses of the relationships between the occurrence of species of interest and relevant environmental factors (e.g. Franklin 2010, Guisan et al. 2017). A common approach is to model the current or potential occurrence of species (e.g. tHuiller et al. 2004, Hirzel et al. 2006, Basille et al. 2008); the aim is to determine the landscape potential for their perma- nent or temporary occurrence and to evaluate the significance of individual environmental factors for their spatial expansion. Thus, habitat modelling is currently one of the most widely used approaches in conservation biology (e.g. Huck et al. 2010, Basille et al. 2013, Guisan et al. 2013).

Data show that, in the 1990s, 28.4% of the total length of the Czech Republic’s watercourses were unfavourably modified, which is tens of thousands of kilometres of the river network. According to the current National Biodiversity Strategy of the Czech Republic, the country’s current optimistic targets are at least 300 km of restored watercourses for the 2016–2025 period. The status of watercourses and related floodplains has therefore not seen any significant improvement since the 1990s. Compared with biological and physical/chemical quality elements, monitoring and enhancement of the morphological status of the country’s watercourses has enjoyed a less significant position in the long term. However, apart from the “aesthetical” point of view, its improvement is also of unquestionable importance in terms of water retention in the landscape, flood protection, and drought management. It is therefore a topical issue in society.

Particularly in farmland, there are consequences of erosion and soil transportation into watercourses and further to fishponds and water reservoirs. How to correctly assess the current state of a river basin/catchment areas and of a reservoir and to identify the sources of pollution? Therefore, for proposing appropriate conservation measures both in the landscape and directly on watercourses, mathematical modelling can be successfully combined with Geographic Information Systems (GIS), remote sensing and photogrammetry.
When surveying a site, archive data of aerial photography it is a good resource, and Unmanned Aerial Vehicles (UAVs) or drones are useful, both for making overview images and for photogrammetric processing of a ortophotomaps, or of a detailed surface model