Academic literature on the topic 'Biocroûte'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Biocroûte.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Biocroûte":
Carvalho Lima, Kleber, Cenira Maria Lupinacci, Daniel Dantas Moreira Gomes, Sirius Oliveira Souza, and Fernando Da Silva Alexandre. "Erosão em áreas suscetíveis a desertificação no Semiárido: possibilidades de análise por meio da cartografia geomorfológica baseada em imagens de altíssima resolução." Revista Brasileira de Geomorfologia 24, no. 2 (June 1, 2023). http://dx.doi.org/10.20502/rbg.v24i2.2319.
Dissertations / Theses on the topic "Biocroûte":
Guo, Meina. "Aggregation and biological processes in ion-adsorption rare earth mine tailings under natural restoration and reclamation approaches." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0301.
Ion-adsorption REE deposits are one of the main reservoirs of REEs worldwide, mainly distributing in southern China. In the past decades, the production of REEs has caused serious environmental damage and left over a large area of tailings which continuously threaten the surrounding environment. The main obstacles for ecological restoration of such tailings are poor physical structure, low nutrients, high pollution of REEs and Al. These unfavourable factors hinder the colonization of organisms and the restoration of ecosystem services. Therefore, how to restore the structure and function of soil and ecosystem has become a major issue. Natural succession and phytoremediation provide an option for restoration of mine tailings. However, so far less is understood in terms of the mechanisms of soil formation and ecological succession of REE tailings under different strategies. Therefore, the objectives of this thesis are to: 1) study the evolution mechanism of structure and function of tailing soils and ecosystem in natural succession; 2) study the restoration effects of various phytoremediation strategies; and 3) assess the soil and ecological environment quality under natural succession and phytoremediation. The main findings are as follows. (1) In natural succession of a 15-year chronosequence, soil and ecological functions are significantly increasing over time. There are three completely different evolution patterns (i.e. visual bare, biocrust and vascular vegetation) in the early stage of succession. The evolution between biocrusts and vascular plants occurs from the initial mutual promotion to the later competition. The formation of large aggregates (> 0.25 mm) is mainly controlled by the electrostatic interaction of minerals and biological activities, which improves the diversity of microorganisms and accumulation of nutrients, and controls the migration of REEs. (2) The macroaggregates associated with biocrusts (BC) and with vascular plant root soils (RS) show different morphologies, that is, longitudinal stratification of biocrust and interlacement within the rhizosphere. Both BC and RS are significantly enriched in nutrients. The highest REE concentration is observed in BC while the lowest is found in RS, suggesting that REEs could be redistributed among different horizons by biotic processes. Interestingly, autotrophic microorganisms are more concentrated in the BC, while heterotrophic rhizosphere growth-promoting bacteria are preferentially distributed in the RS. These results show that, although in the same site, the mechanism of soil formation and recovery of soil function under different evolution patterns are quite different. (3) In consideration of time and efficiency, different phytoremediation strategies (i.e. amendment and plantation of pioneer plant Miscantus sinensis and commercial grasses) were conducted by a plot experiment. Compared with bare tailings, the addition of amendment induces a significant increase in nutrients, promotes the formation of macroaggregates, and reduces the availability of REEs. In addition, phytoremediation introduces nitrogen fixing bacteria (e.g. Burkholderia), which change the biological characteristics of tailings and promote nutrient cycling. Our results have proved the effectiveness and sustainability of the amendment input. Nevertheless, the plant effect is not significantly visible within only a 16 month-experiment in this study. In conclusion, this research shows that nature, as an “engineer”, is uninterruptedly improving the soil and ecological environment quality, while phytoremediation efforts can significantly enhance the soil and ecological environment function but the effect weakens with time, which requires longer-term observation
BLANCO, SACRISTAN JAVIER. "Investigation of terrain control on dryland functioning and composition using multiple remote sensing sensors and platforms." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/294894.
Drylands are among the most sensitive areas to actual global change and their cover will increase in the next decades. Terrain has a key role in the distribution of water and nutrients in drylands and shaping their composition. These environments are composed by vegetation and bare soil, many times colonized by biocrusts, which are expected to suffer compositional changes. Remote sensing has been highlighted as an important tool for dryland monitoring. It is a very cost-effective approach to identify biodiversity hotspots, predict changes in their composition, and to evaluate the relationships these changes have with the terrain. Using the proper image analysis according to the study case, remote sensing has proved to be useful for monitoring well differentiated drylands, but not when dryland components are mixed. Thus, the main aim of this dissertation was to study how heterogeneous dryland composition and functioning is affected by the terrain using different multiple remote sensing sensors and platforms. Data from very high spatial resolution RGB, thermal infrared, multi- and hyperspectral imagery, retrieved in the laboratory and in the field using airborne, UAV and stationary platforms were used. The next specific objectives were set: - Evaluating whether SfM techniques can be used in drylands with complex surfaces to derive their terrain from UAV imagery; - Developing a reproducible technique to relate human actions to changes in the health of dryland scarce vegetation communities by using object-based image analysis; - Testing whether the spectral heterogeneity of lichens can be used to estimate their α-diversity using hyperspectral imagery; - Developing a methodology to evaluate the control that terrain has on dryland biocrusts’ distribution using information solely retrieved from UAV; - Testing if TIR imagery can estimate soil moisture in heterogeneous drylands. This PhD thesis comprises an evaluation of SfM techniques at different scales and their applicability at different levels. It also comprises a novel methodology to monitor vegetation in a ground-water dependent ecosystem, where their health is key for the ecosystem’s functioning. Moreover, the application of close-range hyperspectral imagery allowed to estimate the α-diversity of biocrust-forming lichens using their spectral diversity. This led to a better understanding of the spectral behaviour of biocrusts depending on their composition and allowed to develop a methodology to produce accurate maps of land cover in a dryland ecosystem of heterogeneous composition and to relate the effect of terrain atrributes on dryland composition.
Books on the topic "Biocroûte":
Pilkey, Dav. Capitaine Bobette Et La Bagarre Brutale de Biocrotte Dené, 2e Partie. Scholastic, 2004.
Pilkey, Dav. Capitaine Bobette Et La Bagarre Brutale de Biocrotte Dené, 1re Partie. Scholastic, 2003.