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Artykuły w czasopismach na temat "Ecologie de l'invasion"
Tassin, Jacques, Rado Rakotomanana i Christian A. Kull. "Proposition d'un cadre de représentation des bioinvasions en milieu rural : cas de Acacia dealbata à Madagascar". BOIS & FORETS DES TROPIQUES 300, nr 300 (1.06.2009): 3. http://dx.doi.org/10.19182/bft2009.300.a20413.
Pełny tekst źródłaSansonetti, Philippe J. "Bases moléculaires et cellulaires de l'invasion des cellules épithéliales intestinales par Shigella flexneri". Comptes Rendus de l'Académie des Sciences - Series III - Sciences de la Vie 320, nr 9 (wrzesień 1997): 729–34. http://dx.doi.org/10.1016/s0764-4469(97)84821-4.
Pełny tekst źródłaChekchaki, Samir, Arifa Beddiar i Mohamed Djalil Zaafour. "Cartographie par télédétection des milieux envahis par Acacia mearnsii De Wild. dans l’extrême Nord-Est algérien". BOIS & FORETS DES TROPIQUES 343 (14.01.2020): 5–16. http://dx.doi.org/10.19182/bft2020.343.a31835.
Pełny tekst źródłaBâ, Khalilou, Massamba Thiam, Gauthier Dobigny, Laurent Granjon, Youssou Mane, Vitaly Volobouev i Jean-Marc Duplantier. "Hypothesis on the origin of the invasion of Senegal by Gerbillus nigeriae based on chromosomal data / Hypothèses sur l'origine de l'invasion du Sénégal par Gerbillus nigeriae sur la base de données chromosomiques". mammalia 70, nr 3/4 (styczeń 2006). http://dx.doi.org/10.1515/mamm.2006.047.
Pełny tekst źródłaRozprawy doktorskie na temat "Ecologie de l'invasion"
Delbac, Lionel. "Effet de la succession temporelle des ressources végétales à l’échelle des paysages sur les communautés de drosophiles : Cas d’étude en agrosystème viticole suite à l'invasion par Drosophila suzukii". Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0261.
Pełny tekst źródłaDrosophila suzukii is an invasive species, native to Asia, which has expanded very rapidly since its introduction in 2008 in Europe. This species poses serious ecological and agronomic problems by attacking the fruits of many non-cultivated or cultivated host plants such as grapes. It is now present in the Drosophilidae community found in wine-growing landscapes. This drosophila community remains largely unknown and no studies have been carried out so far to characterise it. We also lack data on the effects of resource fragmentation (wintering sites, shelter and food resources), in space and time, on the population dynamics of D. suzukii in the wine-growing agrosystem. To address all these shortcomings, we set up an observational study based on a network of twenty vineyard plots located in the Bordeaux vineyard along different gradients of spatial continuity of resources. We sought to assess 1) the effect of landscape composition on the structure of the Drosophilidae community in vineyard landscapes, 2) the temporal dynamics of D. suzukii on the fruits of different wild host plant species present in the landscape, and 3) the effect of the spatial and temporal distribution of food resources on the pest's population levels. In this work, we showed that the abundance of the different species of fruit flies found in vineyards, and not their species richness, is positively dependent on the proportion of semi-natural habitat in the surrounding landscape. We highlighted a temporal differentiation between the two dominant species of this community, Drosophila subobscura in winter and D. suzukii in summer and autumn. Furthermore, we characterised the temporal dynamics of D. suzukii on five fruits of host plants present in the landscape (mistletoe, cherry, black elder, wild blackberry and grape) which ensure temporal continuity of food resources on a year-round scale. Nevertheless, our work shows that taking into account the spatial and temporal distribution of these food resources in the landscape does not improve the predictive qualities of the statistical model seeking to predict the insect's population levels on the basis of land use around the vineyard plots. This work has demonstrated that an invasive pest, which integrates a native insect community, can establish itself in the wild habitat at the edge of agricultural plots in a given region by passing over different resources during its life cycle before attacking the cultivated plant. These landscape ecology approaches represent interesting levers for understanding the population dynamics of a new invasive species and thus enable the possible definition of areas favourable to its abundance
Tassin, Jacques. "Dynamique et conséquences de l'invasion des paysages agricoles des Hauts de la Réunion par Acacia Mearnsii de Wild". Toulouse 3, 2002. http://www.theses.fr/2002TOU30096.
Pełny tekst źródłaPapin, Marine. "Efficiency and impact of recurrent microbial inoculation in soil, a lab to field assessment". Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCK051.
Pełny tekst źródłaWith the urgent need to adopt more sustainable practices that sustain agricultural production while protecting the environment, microbial inoculants are gaining increasing attention for their potential to reduce reliance on agrochemicals. However, despite decades of research, the benefits of soil microbial inoculants for crop yields remain highly variable across different soils, climates, plant genotypes, and inoculant strains. This variability makes outcomes difficult to predict and may ultimately reduce farmers’ confidence. This work explores the potential of recurrent inoculations as a strategy to overcome the biotic resistance of the resident soil microbial community and promote inoculant establishment. It also examines the effects of these inoculations on the resident microbial community. In a first microcosm experiment, we showed that recurrent inoculation could transiently improve the abundance of the inoculant (Pseudomonas fluorescens) with minimal impact on the resident bacterial community. A second experiment in greenhouse evidenced the unexpected potential of recurrent inoculation carried out until sowing to enhance maize growth while exerting a weaker impact on the bacterial resident community compared to recurrent inoculation starting at sowing. The third experiment conducted under field conditions reflected the challenges of translating the growth benefits observed in controlled environments to uncontrolled field conditions. Overall, this work suggests that both the timing and frequency of inoculation should be adjusted in a complementary way. Specifically, recurrent inoculation may transiently enhance the abundance of the inoculant during the critical early stages of plant growth. This may either promote successful host colonization when an adequate dose is applied, or indirectly influence the soil microbial community at sowing