Auswahl der wissenschaftlichen Literatur zum Thema „Sous-Étage“
Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an
Inhaltsverzeichnis
Machen Sie sich mit den Listen der aktuellen Artikel, Bücher, Dissertationen, Berichten und anderer wissenschaftlichen Quellen zum Thema "Sous-Étage" bekannt.
Neben jedem Werk im Literaturverzeichnis ist die Option "Zur Bibliographie hinzufügen" verfügbar. Nutzen Sie sie, wird Ihre bibliographische Angabe des gewählten Werkes nach der nötigen Zitierweise (APA, MLA, Harvard, Chicago, Vancouver usw.) automatisch gestaltet.
Sie können auch den vollen Text der wissenschaftlichen Publikation im PDF-Format herunterladen und eine Online-Annotation der Arbeit lesen, wenn die relevanten Parameter in den Metadaten verfügbar sind.
Zeitschriftenartikel zum Thema "Sous-Étage"
Gautier, Jean-Jacques. „Les occupants du premier étage de l’aile du Midi à Versailles sous Louis XIV“. Versalia. Revue de la Société des Amis de Versailles 14, Nr. 1 (2011): 63–92. http://dx.doi.org/10.3406/versa.2011.1127.
Der volle Inhalt der QuelleFourdrin, Jean-Pascal. „Vestiges d'un parapet antique près de la tour du Sacraire Saint-Sernin à Carcassonne“. Journal of Roman Archaeology 15 (2002): 310–16. http://dx.doi.org/10.1017/s1047759400013994.
Der volle Inhalt der QuelleThébaud, Gilles, Guillaume Choisnet und Camille Roux. „Contribution to the survey of the heathlands of the french Massif central (habitats 4030 and 4060) : analysis of phytosociological data.“ BIOM - Revue scientifique pour la biodiversité du Massif central 2, Nr. 1 (01.06.2021): 62–109. http://dx.doi.org/10.52497/biom.v2i1.283.
Der volle Inhalt der QuelleYancy, Briana M., Janine M. Antalffy, Michael G. Rowley, Cierra N. McKoy, Daniel C. Stonko, Lehron E. Rolle, Jennifer L. Christhilf, Scott B. Johnson, Shelley Cant-Woodside und Kevin E. Omland. „Nest site characteristics of the Critically Endangered Bahama Oriole (<em>Icterus northropi</em>)“. Journal of Caribbean Ornithology 33 (15.12.2020): 95–103. http://dx.doi.org/10.55431/jco.2020.33.95-103.
Der volle Inhalt der QuelleBendjaballah, Soumaya, Redha Lakehal, Farid Aimer, Rabeh Bouharagua, Radouane Boukarroucha und Abdelmalek Brahami. „False aneurism of the aortic arch with bypass on the left lung. A case report“. Batna Journal of Medical Sciences (BJMS) 5, Nr. 1 (25.12.2018): 82–83. http://dx.doi.org/10.48087/bjmscr.2018.5119.
Der volle Inhalt der QuelleLathuilière, Bernard. „Faune corallienne des récifs toarciens du Moyen Atlas marocain, première approche“. Bulletin de la Société Géologique de France 182, Nr. 6 (01.11.2011): 533–44. http://dx.doi.org/10.2113/gssgfbull.182.6.533.
Der volle Inhalt der QuelleBernèche, Francine. „Immigration et espace urbain“. Cahiers québécois de démographie 12, Nr. 2 (27.10.2008): 295–324. http://dx.doi.org/10.7202/600512ar.
Der volle Inhalt der QuelleMissa, Jean Nöel. „Gilbert Hottois et la Species Technica“. Revista Colombiana de Bioética 16, Nr. 1 (01.03.2021). http://dx.doi.org/10.18270/rcb.v16i1.3216.
Der volle Inhalt der QuelleSnaith, Tamaini V., und Karen F. Beazley. „THE DISTRIBUTION, STATUS AND HABITAT ASSOCIATIONS OF MOOSE IN MAINLAND NOVA SCOTIA“. Proceedings of the Nova Scotian Institute of Science (NSIS) 42, Nr. 2 (01.11.2004). http://dx.doi.org/10.15273/pnsis.v42i2.3608.
Der volle Inhalt der QuelleGuille-Escuret, Georges. „Cannibalisme“. Anthropen, 2019. http://dx.doi.org/10.17184/eac.anthropen.119.
Der volle Inhalt der QuelleDissertationen zum Thema "Sous-Étage"
Rivest, Sébastien. „Variations altitudinales des interactions biotiques et de la phénologie de la floraison chez deux plantes de sous-étage de l'est de l'Amérique du Nord“. Mémoire, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/10593.
Der volle Inhalt der QuelleCollard, Amélie. „Réponses des plantes de sous-bois au retrait expérimental du cerf de Virginie dans les forêts du sud du Québec“. Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26196/26196.pdf.
Der volle Inhalt der QuelleWe examined the response of understory plants to deer exclusion in maple-dominated forests of southern Québec following nearly 30 years of deer overabundance. Six maple forests were selected for the study and at each site one deer exclosure and one control were established in 1998. One exclosure and one control at each of the same sites were established in 2003 under recent gap openings. We investigated deer impacts on the richness, abundance, and aboveground biomass of different plant groups. None of these variables differed significantly between treatments over the years under both forest cover and gaps, except for tree seedlings and total plant abundance under gaps. Trillium erectum recovered partially as individuals were taller and reproduced more frequently in deer exclosures under forest cover. Overall, our results suggest that plant groups did not recover from deer exclusion, likely because of low light levels that prevail in maple-dominated forests.
Dumas, Noé. „La végétation concurrente de la régénération forestière : évaluation des surfaces colonisées, modélisation de l'abondance et de l'impact sur la régénération ligneuse à l'échelle de la France“. Electronic Thesis or Diss., Paris, AgroParisTech, 2022. http://www.theses.fr/2022AGPT0015.
Der volle Inhalt der QuelleForest renewal is a key stage in the life of forest stands as it allows the long-term maintenance of the forest and its associated ecosystem services. Among the factors likely to have a negative impact on forest renewal, colonisation by competitive species can slow down tree regeneration, or even block it for several decades.The objective of this thesis is to estimate the impact of competitive vegetation on tree regeneration on a regional to national scale. The thesis is mainly based on the use of French National Forest Inventory (NFI) data.A first step, using the results of a survey of forest managers, was to establish a list of the main competing species for tree regeneration, and to determine the areas where each species is present with a high abundance. Bramble (Rubus fruticosus), Eagle Fern (Pteridium aquilinum) and Purple Moor-grass (Molinia caerulea) are the main competitive species in France, and are each present with a high abundance in more than 300,000 ha of forests with open canopies in France.In order to better understand the ecology of competitive species, the role of canopy openness on the probability of presence and high abundance of competitive species was studied. For a majority of species, canopy cover has a weak effect on the probability of presence of species. Conversely, species abundance was strongly correlated with canopy cover, with high canopy cover being associated with lower abundance for most competitive species.The effect of competitive vegetation on tree regeneration cover was then modelled at the scale of France for the three main species. High abundance of P. aquilinum and M. caerulea is associated with a relative decrease in tree regeneration cover of about 30% and 40% respectively, compared to situations where these species are present at low abundance. Conversely, R. fruticosus has a more ambivalent effect on tree regeneration. Woody regeneration cover increases slightly on average at intermediate R. fruticosus abundances, and decreases significantly at high abundance of this species.Finally, the probability of presence and high abundance of the three main competing species was modelled, in order to identify the conditions of high abundance and to predict the location of the areas potentially impacted by the appearance of these three species when the canopy is opened. The difficulty of accurately modelling the presence and, more importantly, the level of abundance of these species led to models with poor predictive abilities, which did not allow for robust estimates of the conditions at high risk of colonisation by the three species studied.In conclusion, this thesis has shown that tree regeneration problems related to competitive vegetation species are present on significant areas in French forests. P. aquilinum and M. caerulea have a marked negative effect on tree regeneration regardless of their abundance, whereas the effect of R. fruticosus is only negative at high abundances. Finally, this thesis also demonstrated the importance of modelling presence and abundance separately, and identified the main factors that need to be taken into account to better model species abundance
Senterre, Bruno. „Recherches méthodologiques pour la typologie de la végétation et la phytogéographie des forêts denses d'Afrique tropicale“. Doctoral thesis, Universite Libre de Bruxelles, 2005. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210954.
Der volle Inhalt der QuelleII. Field data consisted in phytosociological homogeneous sample plots localized within different recognized phytogeographical entities, in a region of tropical Africa where these entities are known to be well conserved. A total of 37 such plots were inventoried in the region extending from the littoral forests of Ndoté, Equatorial Guinea, which are wet evergreen forests, to the continental forests of the Dja, Cameroon, known as evergreen seasonal forests. The studied region also included the oriental Atlantic forests of Equatorial Guinea, known as moist evergreen forests or caesalp forests. In various parts of this continentality gradient, some plots were localized within climax non-zonal formations, namely the submontane rain forests. The emphasis was put on the vegetation of the Monte Alén National Park.
The sampling methodology was willing to be as "complete ", including all strata, "quantitative ", enumerating all individuals, and "representative ", within each stratum, as possible. These multi-layers plots were realised using nested sub-plots, with a sampling size of 100 individuals for every ligneous stratum recognized (dominant trees, dominated trees and shrubs) and a sampling size of 200m² for the herbaceous and suffrutex stratum.
Forest types were defined independently for each stratum and the differences were analysed. A method was proposed for the simultaneous analysis of all floristic data, converting and standardizing the values from ligneous strata, on the one hand, and from understorey strata, on the other hand.
III. Ten forest types were described using IndVal and discussed in the general context of the guineo-congolian region, from a syntaxonomic view point (agglomerative classification) and from a phytogeographical view point (divisive classification). Homologies between these two approaches are described. The proposed phytogeographical system is based on an "open " conception of hierarchical classifications, combining advantages of agglomerative and divisive classifications. In concrete terms, the non-zonal criteria, for example the submontane variants, are categorised separately and in analogy with the zonal criteria, related to the usual phytochoria.
Analysis of ecological relationships for the 10 communities showed that the main variables related to the floristic variability in our mainland rain forests are elevation, rainfall, hygrometry (estimated using bryophytes cover levels) and distance to the ocean. The two extremes on the vertical microclimatic gradient, dominant trees stratum and herbaceous stratum, give similar typologies, however canonical analysis showed that for the herbaceous layer, non-zonal variables (hygrometry and elevation) were gaining more importance when the influence of the two zonal variables was attenuated. In every case, spatial autocorrelation was less important than the environment in explaining floristic variability but its role increased in the spatial arrangement of understorey species, whose dispersal capacity is generally lower than canopy trees. The phytosociological, phytogeographical and ecological description of forest types is accompanied by a physiognomical description using biological types spectrum, as well as architectural models, leaf sizes, etc.
With regard to diversity, we have demonstrated that species richness was higher from upper to lower strata because of the accumulation in lower strata of species from various strata. On the other hand, the proper stratum diversity, i.e. the structural set, decreased from dominant trees to shrubs. The proper diversity of the herb layer showed relatively high figures mainly due to the higher individual density in relation to the existence of microstrata. Within the 37 sample plots, 1,050 taxa have been identified to species or morpho-species levels, for a total of 25,750 individuals. These taxa represent 442 genus among 104 families. The richest forest type is found on the foothills of the Niefang range, on the windward side. This forest type is also characterised by a high number of oligotypic genus and by species belonging to functional types indicators of glacial refuges. These functional types are defined on the basis of the dispersal capacity and on kind of stand needed for effective germination. We formulated the hypothesis that this kind of "foothills refuge ", characterised by his zonal nature, could have been one of the rare refuges for species from mainland rain forests, while montane and fluvial refuges would mainly have preserved species from non-zonal forest types: (sub)montane and riverine.
Based on indicator species of submontane forests, a potential distribution map of this forest type has been realised at the Atlantic central African scale. More than 400 submontane forest localities have been mapped. These forests begin at 400m of altitude near the ocean, and progressively at higher altitude for increasing distance to the ocean. Many lowland localities also comprised submontane species, which could indicate the existence of ecological transgressions. These transgressions would allow migratory tracks for submontane species between isolated mountain ranges, not only during glacial periods, through heights at the northern and southern borders of the congo basin, but also contemporarily through the lowland riverine forest network, in the centre of this basin. Finally, a special attention has been attributed to littoral forests and to some cases of choroecological transgressions, coupled to the ecological equalization phenomenon.
Doctorat en sciences agronomiques et ingénierie biologique
info:eu-repo/semantics/nonPublished
Desrochers, Annie. „Détermination de l'âge de l'épinette noire (picea mariana) en sous-étage de peupliers faux-trembles (populus tremuloides) dans la forêt boréale, Québec“. Thèse, 1996. http://constellation.uqac.ca/1155/1/1525779.pdf.
Der volle Inhalt der QuelleBücher zum Thema "Sous-Étage"
Swift, D. E. Établissement de critères relatifs à la régénération naturelle acceptable des conifères sous un étage dominant clairsemé composé de feuillus: Établissement et rapport d'étape de l'étude. Fredericton, N.-B: Service canadien des forêts, 1996.
Den vollen Inhalt der Quelle findenCoates, K. Dave. Abundance of secondary structure in lodgepole pine stands affected by the mountain pine beetle in the Cariboo-Chilcotin. Victoria, B.C: Pacific Forestry Centre, 2009.
Den vollen Inhalt der Quelle findenTeti, Patrick Anthony. Novel aerial photography as an aid to sampling secondary structure in pine stands. Victoria, B.C: Pacific Forestry Centre, 2009.
Den vollen Inhalt der Quelle finden