Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
See detailLandscape assessment by graphical evenness analysis. Landscape Ecology – The science and the action
Van Hecke, P; Bogaert, Jan ULg; Salvador-Van Eysenrode, D

in Proceedings of the 5th World Congress of the International Association for Landscape Ecology (IALE). (1999)

Detailed reference viewed: 16 (0 ULg)
Full Text
See detailLandscape Capacity and Social Attitude towards wind energy projects in Belgium
Van Rompaey; Schmitz, Serge ULg; Kestelot, C.

Report (2010)

Detailed reference viewed: 65 (18 ULg)
Full Text
See detailLandscape Capacity and Social Attitudes towards Wind Energy Projects in Belgium
Van Rompaey, Anton; Schmitz, Serge ULg; Kesteloot, Chris et al

Book published by Belgian Science Policy (2011)

The present energy crisis and the awareness of the human impact on climate change have boosted the public debate on the accelerated deployment of renewable energy sources. The objective of this research ... [more ▼]

The present energy crisis and the awareness of the human impact on climate change have boosted the public debate on the accelerated deployment of renewable energy sources. The objective of this research project is to analyse and assess the landscape capacity and social attitudes towards wind energy parks in Belgium, especially in non-urban and non-industrial sites. This research project starts from the observation that a sustainable production of energy, relying on renewable resources, should go hand in hand with a sustainable societal support for the use of these renewable sources. Experiences from neighbouring countries showed that the societal support depends of the regional landscape capacity and the social attitudes towards wind energy parks. In this research project both quantitative and qualitative research techniques will be used to: (1) measure the landscape capacity in relation to the location of wind energy parks in Belgium, (2) to gain insight in the way attitudes towards wind energy parks are socially constructed and reproduced. [less ▲]

Detailed reference viewed: 363 (29 ULg)
Full Text
Peer Reviewed
See detailThe landscape charter issue in Walloon nature parks: an opportunity to revisit notions of landscape conformity and visual integrity
Schmitz, Serge ULg

in Van Der Vaart, Jacob; Palang, Hannes (Eds.) Reflection on Landscape Change: The European Perspective (2012, August)

Detailed reference viewed: 38 (12 ULg)
Full Text
Peer Reviewed
See detailLandscape Control on the Spatial and Temporal Variability of Chromophoric Dissolved Organic Matter and Dissolved Organic Carbon in Large African Rivers
Lambert, Thibault ULg; Darchambeau, François ULg; Bouillon, Steven et al

in Ecosystems (2015)

The characteristics of colored dissolved organic matter (CDOM) as well as the concentrations and stable isotope composition (d 13 C) of dissolved organic carbon (DOC) were characterized in several large ... [more ▼]

The characteristics of colored dissolved organic matter (CDOM) as well as the concentrations and stable isotope composition (d 13 C) of dissolved organic carbon (DOC) were characterized in several large rivers of Africa including the Congo, Niger, Zambezi, and Ogooué basins. We compared the spatial and temporal patterns of dissolved organic matter (DOM) quantity and quality along with various environmental gradients, including hydrology, river size, catchment vegetation, and connectivity to land. The optical proxies used include the absorption coefficient at 350 nm, the specific ultraviolet absorbance, and the spectral slope ratio (S R = 275–295-nm slope divided by 350–400-nm slope). Our results show that land cover plays a primary role in controlling both DOC concentration and optical properties of DOM in tropical freshwaters. A higher cover of dense forest in the catchment leads to a higher quantity of highly aromatic DOM in the river network, whereas an increasing savannah cover results in lower DOC concentrations and less absorptive DOM. In addition to land cover, the watershed morphology (expressed by the average slope) exerts a strong control on DOC and CDOM in tropical rivers. Our results also show that the percentage of C3 and C4 vegetation cover is not an accurate predictor for DOM and CDOM quality in rivers due to the importance of the spatial distribution of land cover within the drainage network. The comparison of our results with previously published CDOM data in temperate and high-latitude rivers highlights that DOM in tropical freshwa-ters is generally more aromatic, and shows a higher capacity for absorbing sunlight irradiance. [less ▲]

Detailed reference viewed: 52 (2 ULg)
Full Text
Peer Reviewed
See detailLandscape cultivation alters d30Si signature in terrestrial ecosystems
Vandevenne, F; Delvaux, C; Hughes, H et al

in Scientific Reports (2015)

Detailed reference viewed: 26 (1 ULg)
Full Text
See detailLandscape diversity, better for biodiversity? - hoverflies and butterflies in different agri-environment schemes
Pécheur, Emilie ULg; Piqueray, Julien; Dopagne, Claude ULg et al

Conference (2016, August 31)

In Europe, agri-environment schemes (AES) are designed to give credit to environmental issues in agricultural practices. Among the different Walloon AES, some are dedicated to enhance and preserve ... [more ▼]

In Europe, agri-environment schemes (AES) are designed to give credit to environmental issues in agricultural practices. Among the different Walloon AES, some are dedicated to enhance and preserve biodiversity linked to the agroecosystems. This study wishes to explore, at a landscape scale, how do different AES perform regarding butterflies and syrphidae diversity. Data collection occurred in five categories of ecological infrastructures (EI): four types of agri-environmental schemes (grassy strips, wildflower strips, bird-feeding margins, species-rich meadows) and cereal crops. Five replicates were selected for each category. Syrphidae were collected in water traps once per month, from May to July. Butterflies were monitored along transects from May to Augustus. Plant species were identified in every plot, within a 1-m radius around the traps and along a transect through every plot. Preliminary results show that abundance and species diversity of butterflies is significantly higher in parcels with floral resources. Moreover, hosts plants for larvae and foraging plants for adults are significantly more present in two types of AES: the wildflower strips and the species-rich meadows. Regarding the identified plant species, categories are divided in three groups (crops apart): bird-feeding margins; species-rich meadows and grassy strips; wildflower strips (Fig.1). Concerning hoverflies, a significantly higher abundance is observed in the wildflower strips compared to the crops in June (p= 0.008). Other abundance values in May and July show no difference. These results suggest that wildflower strips are performing infrastructures for biodiversity conservation in agroecosystems. As the presence of floral resources seem to be an important factor for the presence of foraging of adults, attention should be paid to the provisioning of food resources for the larval stages, especially butterflies, at a landscape scale in order to assure a sustainable approach in biodiversity support. [less ▲]

Detailed reference viewed: 51 (3 ULg)
Full Text
Peer Reviewed
See detailLandscape Dynamics And Habitat Selection By The Alien Invasive Fallopia (Polygonaceae) In Belgium
Tiebre, Marie-Solange; Saad, Layla ULg; Mahy, Grégory ULg

in Biodiversity & Conservation (2008), 17(10), 2357-2370

Detailed reference viewed: 26 (3 ULg)
See detailLandscape dynamics in Central and West Africa : causes, consequences and quantification
Bogaert, Jan ULg; Barima, Y S S; Bamba, I et al

in Azevedo, J C; Feliciano, M; Castro, J (Eds.) et al Forest landscapes and Global Change (2010)

Detailed reference viewed: 35 (4 ULg)
Full Text
See detailLandscape ecological consequences of the (sub)urbanization process in an African city: Lubumbashi (Democratic Republic of Congo)
Andre, Marie ULg

Doctoral thesis (2017)

If anthropogenic effect is a general term accounting for the influence of human activities on environment, it may also designate specific influences that may be inter- and intralinked. Thus, urbanization ... [more ▼]

If anthropogenic effect is a general term accounting for the influence of human activities on environment, it may also designate specific influences that may be inter- and intralinked. Thus, urbanization and suburbanization are anthropogenic processes contributing to the broad anthropogenic effect. They hide in turn other subprocesses of land transformation that will be called here the secondary spatial impacts. However, although the growing influence of the latter processes, they are still not defined consensually nor exist a comprehensive and applied-oriented methodology to delimit them. The general objective of this thesis is to develop a spatially explicit methodology to evaluate the landscape ecological consequences of the urbanization and suburbanization processes, taking a representative city of Sub-Saharan Africa as a case study: Lubumbashi (Democratic Republic of Congo), and the last decade as the period of study. That general objective is addressed through two themes, to which correspond specific objectives. The first theme concerns the evaluation of the anthropogenic land use and land cover dynamics and the second one proposes a methodology to evaluate the expansion of urban and suburban areas, in relation with consistent definitions of the areas in the urban-rural gradient. For both themes, the propositions are based on remote sensing techniques and landscape ecology metrics. Results show that the region of Lubumbashi underwent a global anthropisation increase mostly constituted of minor rises of anthropisation levels but impacting mainly the most natural landscape classes. Urban and suburban areas were located through the use of the proportion of built-up metric, the secondary spatial impact area through the use of adjacencies of the less natural landscape patches. The growth shape of the urban and suburban areas is concentric, except in the south-western part of the city where an affluent of the river Kafubu and its adjacent wetlands slow the urban expansion. The secondary spatial impact area dynamics seems determined, in the north-west, by the relief and, in the north-east, by a transportation axis. It is the latter dynamics that is dominant for the period. It corresponds to the so-called savanisation process, probably due to wood fuel and charcoal production. The methodologies developed here could be improved by taking connectedness into account, by using an additional configuration metric for the definition of urban areas or by taking advantage of spatially explicit socio-economic data. They could also be tested on mining sites, other cities and/or using images of different spatial resolution. [less ▲]

Detailed reference viewed: 104 (31 ULg)
Full Text
Peer Reviewed
See detailLandscape ecology in action (A. Farina).
Bogaert, Jan ULg

in Landscape & Urban Planning (2001), 53(1-4), 181-182

Detailed reference viewed: 34 (2 ULg)
Full Text
Peer Reviewed
See detailLandscape ecology – A top-down approach (J. Sanderson, L.D. Harris)
Bogaert, Jan ULg

in Acta Biotheoretica (2002), 50(2), 129-131

Detailed reference viewed: 26 (0 ULg)
Full Text
Peer Reviewed
See detailLandscape Ecology: a unifying discipline
Bogaert, Jan ULg; Andre, Marie ULg

in Tropicultura (2013), 31(1), 1-2

Detailed reference viewed: 97 (14 ULg)
See detailLandscape ecology: focus on spatio-temporal patterns.
Bogaert, Jan ULg

Conference (2004)

Detailed reference viewed: 9 (0 ULg)
Full Text
See detailLandscape ecology: monitoring landscape dynamics using spatial pattern metrics.
Bogaert, Jan ULg; Hong, S-K

in Hong, S-K; Lee, J-A; Ihm, B-S (Eds.) et al Ecological Issues in a Changing World: Status, Response and Strategy (2004)

Detailed reference viewed: 46 (9 ULg)
Full Text
Peer Reviewed
See detailLandscape fragmentation assessment using a single measure.
Bogaert, Jan ULg; Van Hecke, P; Salvador-Van Eysenrode, D et al

in Wildlife Society Bulletin (2000), 28(4), 875-881

Detailed reference viewed: 64 (3 ULg)
Full Text
See detailThe “Landscape Laboratory Approach”: Examples from Scandinavia, Experiments from Europe, Proposals for Liège
Szanto, Catherine ULg

Scientific conference (2014)

The aim of the seminar is to present the Landscape Laboratory and to explore the different directions of thoughts towards which Roland Gustavsson’s work is pointing, by presenting experiences directly ... [more ▼]

The aim of the seminar is to present the Landscape Laboratory and to explore the different directions of thoughts towards which Roland Gustavsson’s work is pointing, by presenting experiences directly inspired by Alnarp, and other examples exploring similar issues in different contexts. The Landscape Laboratory is a place for multidisciplinary research and experimentation in a 1 to 1 scale. The approach is based on theoretical foundations that share a belief in the essential character of ‘embodied knowledge’, where practical and theoretical knowledge is constructed through dialogue. Starting from the presentation of concrete examples (in Alnarp and elsewhere), the seminar will look at the specificity of the research methodology developed by Roland Gustavsson, and study its applicability to other sites, such as for example the Meuse valley around Liège. [less ▲]

Detailed reference viewed: 61 (0 ULg)
See detailLandscape metrics for the evaluation of trend reliability in remote sensing imagery.
Bogaert, Jan ULg

in Abstracts of the Second International SPOT/VEGETATION Users Conference (2004)

Detailed reference viewed: 14 (1 ULg)