DCGISTAM 2017 Abstracts


Full Papers
Paper Nr: 1
Title:

The Use of Geotechnologies to Analyze the Influence of the Road Infrastructure on the Landscape

Authors:

Aimara Reyes, Mercedes Solla and Henrique Lorenzo

Abstract: The projects devoted to the construction of transport infrastructure represent social and economic benefits that provide communication between different regions, which makes the transportation of people and goods easier while providing social and economic development at different local, regional and national scales and improving the quality of life of the inhabitants. Nevertheless, the construction and maintenance of roads have negative effects on the environment, especially at the landscape scale. The identification and evaluation of effects such as the landscape heterogeneity are important to design strategies oriented to mitigate and compensate such impacts. The growth of road infrastructure is becoming more and more important due to the environmental impacts produced at different territorial scales: urban, periurban, and rural. The knowledge of the landscape diversity and the understanding of the changing spatial and temporal patterns associated with roads are necessary, especially in areas with high spatial dynamic. For example, in urban and periurban areas, the urbanization processes will continue and the requirements of connection between urban centers will be greater, requiring a large number of roads and maintenance of the existing infrastructure. However, without efficient planning tools that protect the spatial dynamics of the ecosystems, a sustainable environment could not be available over time. One challenge is the use of different geotechniques and statistical methods, in addition to simulation models, to analyze and predict the effects of road infrastructure on the temporal and spatial changes of the landscape. Thus, the main objective of this PhD study is to achieve an adequate methodology through the use of existing models and techniques for the analysis of heterogeneous landscapes, and mainly the influence of the transport infrastructure on the fragmentation and diversity of natural ecosystems.

Paper Nr: 2
Title:

The Use of Airborne Laser Scanning Data to Study Birds Habitat Requirements

Authors:

Fogl Michal and Moudrý Vítězslav

Abstract: Vegetation structure is an important factor that influence species diversity and distribution. However, field measurement of vegetation structure is labour intensive and of limited spatial extents. Laser altimetry (LiDAR) is an active remote sensing technology that has enabled measurement of vegetation 3D structure over large areas. We will use airborne LiDAR acquired over Krkonose Mountains National Park, Czech Republic with average point density 6 p/m2 in combination with in situ measurements of forest composition and structure and bird data collected for Atlas of breeding bird distribution in the Krkonose to: (1) evaluate the accuracy of LiDAR derived forest stand characteristics with field measurements; (2) assess the utility of LiDAR derived variables to explain bird species richness and single species presence and (3) compare results of existing studies with our results to investigate whether the relationship between vegetation structure and particular bird species is consistent across species ranges.

Paper Nr: 3
Title:

The Quality of Spatial Data and Its Effect on Species Distribution Models

Authors:

Gábor Lukáš and Moudrý Vítězslav

Abstract: Biodiversity is declining throughout the world and its monitoring is an ongoing challenge of modern biogeography and macroecology. To deal with biodiversity crisis data from both remote sensing and in situ observations are often utilized. To successfully utilize these two complementary sources various modelling approaches has been adopted and plays an important role. The objective of the modelling is to relate in situ response variable (e.g. species distribution) and remotely sensed explanatory variables (e.g. derived from digital elevation models) to describe the relationship between these two or to predict unknown values of the biodiversity response variable. Species distribution models (SDMs) is the most popular example of such analysis and are widely used in biogeography, macroecology and nature conservation for both fundamental and applied research purposes. The quality of spatial data is currently one of the major limiting factors of the modelling, however, studying its influence with real species is difficult. Virtual species, on the other hand, allows to easily determine how for example different methods of data collection, its quality or used scale, affect models. The aim of this research is to address data quality in SDMs.

Paper Nr: 4
Title:

The Use of 3DGIS Models to Develop a New Model of Urban Management: The Fortaleza- Brasil Case Study

Authors:

Caroline Camara, Ana Paula Falcão and Jorge Baptista e Silva

Abstract: The uncontrolled urban growth occurred in several cities of Brazil, source of urban and environmental degradation was allowed by the local authority to give fast answers to individual requests related with the natural or built environment. The extensive territory of Fortaleza, the most densely populated capital of Brazil, among the 26 state capitals and 01 federal district, is marked by urban vocations and environmental peculiarities that influence the land use, growing without any integration between the environmental conditions and the urban design. To solve this lack of communication we intend to improve the current methodology for territorial management, using a 3DGIS approach.