Recursos de colección

ORBi Open Repository and Bibliography (263.678 recursos)

In may 2007, the ULg's Administrative Board (joined in June 2007 by the FUSAGx) decided to create an institutional repository and defined a strong institutional self-archiving policy to increase the visibility, accessibility and impact of the University's publications (Board's decision). This decision led to the official launch, in November 2008, of the ORBi platform including both the Academic Bibliography and the Institutional Repository of the Wallonia-Europe University Academy.

Life sciences => Environmental sciences & ecology

Mostrando recursos 1 - 20 de 5.206

  1. Is the observer effect significant in vegetation assessment of restored metallicolous grassland?

    Boisson, Sylvain; Mahy, Grégory
    Projects that prospects habitat restoration require protocols of vegetation assessment to monitor the evolution of the restored ecosystems over time. In most cases, multiple assessors are needed and some studies have shown that the variability among observer can be significant. In the context of tropical grassland, few studies quantified the impact of the observer on the results, reducing the capacity to replicate conclusions, and, therefore to plan restoration strategies at large scale. This study aims to quantify the variation among observers using two phytosociological methods on restored metallicolous grassland and to test whether variation in the assessment could involve the...

  2. Isotopic turnover and trophic fractionation in two species of European freshwater fishes: an experimental approach

    Latli, Adrien; Sturaro, Nicolas; Michel, Loïc; Dejardin, Nelson; Defour, Jean; Lepoint, Gilles; Kestemont, Patrick

  3. Are Christmas tree plantations a suitable habitat for farmland birds?

    Gailly, Robin; Paquet, Jean-Yves; Titeux, Nicolas; Claessens, Hugues; Dufrêne, Marc
    Over the last decade, nonfood perennial crops have been increasingly prevalent in European farming systems. Here, vegetation structure and crop management greatly differ from conventional crops and may likely impact farmland birds. Impacts on birds have been examined for bioenergy agricultural systems, such as miscanthus plantations and short rotation willow coppice. In Europe, the extend of Christmas tree plantations (CTP) has recently increased dramatically in farmland but their impacts on farmland birds remains largely unknown. We examined the extent to which CTP in southern Belgium alter bird species assemblages compared to traditional farmland. The presence and abundance of birds were recorded...

  4. Are Christmas tree plantations a suitable habitat for farmland birds?

    Gailly, Robin; Paquet, Jean-Yves; Titeux, Nicolas; Claessens, Hugues; Dufrêne, Marc
    Over the last decade, nonfood perennial crops have been increasingly prevalent in European farming systems. Here, vegetation structure and crop management greatly differ from conventional crops and may likely impact farmland birds. Impacts on birds have been examined for bioenergy agricultural systems, such as miscanthus plantations and short rotation willow coppice. In Europe, the extend of Christmas tree plantations (CTP) has recently increased dramatically in farmland but their impacts on farmland birds remains largely unknown. We examined the extent to which CTP in southern Belgium alter bird species assemblages compared to traditional farmland. The presence and abundance of birds were recorded...

  5. DIFFERENCIATION GENETIQUE ENTRE POPULATIONS NATIVES ET INVASIVES DU CHENE ROUGE D’AMERIQUE (QUERCUS RUBRA L.)

    Merceron, Nastasia
    Notre objectif est de comprendre le rôle de l’évolution rapide des populations dans le succès des arbres invasifs. Une étude précédente a permis de montrer, par exemple, que les populations européennes de Acer negundo présentent une croissance plus élevée et une durée de saison de croissance plus longue expliqué par un débourrement plus précoce par rapport aux mêmes caractères observés chez les populations natives des États-Unis. Ceci a été observé dans un test de provenance au sein de l’aire invasive, ces tests comparatifs formant des outils appropriés pour l'étude de la différenciation génétique entre populations d'origines différentes via l’analyse de...

  6. Genetic differentiation of native and introduced populations of Quercus rubra L

    Merceron, Nastasia
    Peer reviewed

  7. Carrières et Biodiversité : Les Oiseaux

    Gailly, Robin
    Reconnaissance et bonnes pratiques de gestion des espèces d’oiseaux liées à l'activité d’extraction

  8. Narrowing the science/policy gap for environmental management

    Hughes, Kevin A; Liggett, Daniela; Roldan, Gabriela; Wilmotte, Annick; Xavier, José C
    Antarctic terrestrial and marine environments are under increasing pressure from national operator activities, tourism and climate change. The Protocol on Environmental Protection to the Antarctic Treaty provides overarching legislation concerning the environmental management of the Treaty area, with 2016 marking the Protocol’s 25th anniversary. The Protocol also established the Committee for Environmental Protection (CEP) to provide advice to the Antarctic Treaty Consultative Meeting (ATCM) on environmental matters. Today, the CEP’s Five-Year Work Plan and Climate Change Response Work Programme lists and prioritises issues that need to be addressed to ensure impacts in Antarctica by human activities are both recognized andminimised.Despite all of this, recent evaluations have suggested...

  9. Hautes Valeurs de Conservation (HVC) dans les Unités Forestières d'Aménagement du Cameroun : concepts, choix et pratiques

    Daïnou, Kasso; Bracke, Charles; Vermeulen, Cédric; Haurez, Barbara; De Vleeschouwer, Jean-Yves; Fayolle, Adeline; Doucet, Jean-Louis
    Le système de certification FSC (Forest Stewardship Council) vise à promouvoir la gestion durable des forêts. Il repose sur un ensemble de normes dont une est particulièrement complexe à mettre en oeuvre en Afrique Centrale, le principe 9 traitant des Hautes Valeurs de Conservation (HVC). Ce principe devrait être interprété aux échelons nationaux afin de prendre en compte les spécificités de chaque pays. Bien que des ouvrages aient déjà été élaborés par diverses organisations, aucun ne cible particulièrement les grandes concessions forestières. Au Cameroun, ces concessions ou Unités Forestières d’Aménagement (UFA), représentent pourtant 40 % du domaine forestier national. Le présent...

  10. Genetic Differentiation Between Native and Invasive Populations of Quercus rubra L.

    Merceron, Nastasia
    Peer reviewed

  11. Phenotypic differentiation of native and introduced populations of Quercus rubra L.

    Merceron, Nastasia
    Peer reviewed

  12. Control of Acer negundo L.: insights from experimental and physiological studies

    Merceron, Nastasia
    Peer reviewed

  13. Killing it Softly: Girdling as an Efficient Eco-friendly Method to Locally Remove the Invasive Acer negundo

    Merceron, Nastasia
    Peer reviewed

  14. Investigating the effect of plant-derived amendments on PAHs degradation in brownfield contaminated soils

    Davin, Marie; Starren, Amandine; Colinet, Gilles; Fauconnier, Marie-Laure
    Polycyclic aromatic hydrocarbons (PAHs) are a class of persistant organic compounds of major concern that tend to accumulate in the environment, damaging ecosystems and health. Brownfields represent an important tank for PAHs that require remediation. As an alternative to environmentally aggressive, expensive and often disruptive soil remediation strategies, experiences have been carried on to understand and develop techniques based on bioremediation and phytoremediation. PAHs degradation experiments were conducted in microcosms (laboratory scale) in order to determine whether several plant-derived amendments could enhance bioremediation. Briefly, samples of aged contaminated soils were treated with different concentrations of Medicago sativa or Trifolium pratense root exudates...

  15. Comment les villageois nomment-ils et s’approprient-ils leurs espaces ressources ? Description d’un socio-écosystème en pays Yambassa, Cameroun

    Gillet, Pauline; Codina Llavina, Elisabeth; Yambene, Henri; Vermeulen, Cédric
    Peer reviewed

  16. Acoustic indices provide information on the status of coral reefs: an example from Moorea Island in the South Pacific

    Bertucci, Frédéric; Parmentier, Eric; Lecellier, Gaël; Hawkins, Anthony; Lecchini, David
    Peer reviewed

  17. Variations spatiales et intraspécifiques des concentrations en mercure et en polluants organiques persistants chez le grand dauphin (Tursiops truncatus) dans le sud de la Floride

    Damseaux, France
    L’environnement marin est le réceptacle de nombreuses pollutions d’origine anthropique. Certains prédateurs marins occupant un niveau trophique élevé, tel que le grand dauphin, Tursiops truncatus, présentent des concentrations importantes en polluants dans leurs tissus (e.g. mercure et polluants organiques persistants, POPs). Une population de grands dauphins de Floride est divisée en deux groupes. L’un d’entre eux vit dans la région de Key West en milieu marin, l’autre vit dans le parc national des Everglades caractérisé par l’enchevêtrement de rivières, de ruisseaux et de marécages. L’objectif global de ce travail est d’évaluer les niveaux de contamination en mercure total et en 55...

  18. Assessment of vertical contamination of Cd, Pb and Zn in soils around a former ore smelter in Wallonia, Belgium

    Liénard, Amandine; Colinet, Gilles
    Peer reviewed

  19. Invading or recolonizing? Patterns and drivers of wild boar population expansion into Belgian agroecosystems

    Morelle, Kévin; Fattebert, Julien; Mengal, Coralie; Lejeune, Philippe
    Peer reviewed

  20. AxIOM: Amphipod crustaceans from insular Posidonia oceanica seagrass meadows

    Michel, Loïc(*); Sturaro, Nicolas(*); Heughebaert, André; Lepoint, Gilles
    Peer reviewed

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.