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Littérature scientifique sur le sujet « Multispecie »

Auteur : Grafiati
Publié le 9 mars 2023

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Articles de revues sur le sujet "Multispecie"

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Menchise, Chiara. « Abitare Metamorfosi ». CRIOS, no 23 (octobre 2022) : 88–95. http://dx.doi.org/10.3280/crios2022-023009.

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La casa come artefatto materiale e psichico del mondo con la funzione morale di rendere possibile la felicità, è ciò di cui scrive Coccia in un saggio che non riguarda l'architettura, ma una filosofia multispecie che mira a fare dell'intero pianeta una casa come unica possibilità di sopravvivenza. In 'Filosofia della casa' il filosofo si concentra sui pezzi che l'architettura solitamente perde nella sua traduzione dall'invisibile al visibile, riportando gli effetti che la città, la rivoluzione tecnologica e la pandemia hanno impresso sulla casa in quanto forti presenze modellanti, non ancora abbastanza considerate, e che invece richiedono e domandano la nostra attenzione e riconoscimento..
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Erlania, Erlania, Fifi Widjaja et Enan Mulyana Adiwilaga. « PENYIMPANAN ROTIFERA INSTAN (Brachionus rotundiformis) PADA SUHU YANG BERBEDA DENGAN PEMBERIAN PAKAN MIKROALGA KONSENTRAT ». Jurnal Riset Akuakultur 5, no 2 (25 novembre 2016) : 287. http://dx.doi.org/10.15578/jra.5.2.2010.287-297.

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Keberhasilan kegiatan budidaya perikanan harus ditunjang dengan ketersediaan benih yang berkesinambungan. Oleh karena itu, diperlukan juga ketersediaan pakan alami larva berupa rotifera (Brachionus rotundiformis). Desain percobaan berupa rancangan faktorial dengan dua faktor dan lima ulangan diaplikasikan dalam penelitian ini. Sebagai perlakuan berupa suhu ruang penyimpanan (suhu kamar, suhu ruang AC, dan suhu refrigerator/lemari es) dan pakan mikroalga konsentrat (monospesies dan multispesies). Bakteri probiotik juga digunakan sebagai pengontrol kualitas air. Spesies mikroalga yang digunakan adalah Nannochloropsis sp., Dunaliella sp., Isochrysis sp., dan Pavlova sp. Parameter yang diukur adalah kelimpahan rotifera dan parameter kualitas air media kultur (pH, salinitas, DO, dan NH3). Analisis data terdiri atas analisis regresi, analisis ragam, dan uji keparalelan. Hasil pengukuran parameter kualitas air selama penyimpanan menunjukkan kondisi media yang relatif stabil dan merupakan kisaran optimum bagi pertumbuhan B. rotundiformis. Kelimpahan maksimum tertinggi dari B. rotundiformis baik pada perlakuan pakan monospesies maupun multispesies alga adalah pada suhu kamar. Dari interaksi kedua perlakuan, diperoleh kelimpahan akhir tertinggi pada suhu ruang AC–pakan multispesies. Hal ini menunjukkan bahwa rotifera dapat disimpan lebih lama pada suhu ruang AC dengan pemberian pakan multispesies alga.The success of any aquaculture practices should be supported by sustainable supply of fish fry. Therefore, the availability of rotifers (Brachionus rotundiformis) as natural feed for fish larvae is required. The research was arranged in factorial design with two treatments and five replications. Treatments consisted of different room storage temperatures (refrigerator, room temperature, and room with air conditioner/AC) and microalgae concentrate added as rotifer feed (monospecies and multispecies algae). Probiotic bacteria was used to control water quality. Mikroalgae species consisted of Nannochloropsis sp., Dunaliella sp., Isochrysis sp., and Pavlova sp. Parameters measured were rotifer density and water quality of rotifer media (pH, salinity, DO, and NH3). Data analysis included regression analysis, analysis of varians and parallel testing. The results of water quality parameters during rotifer storage showed that media conditions were relatively stable and optimal for B. rotundiformis growth. The result of treatments interaction showed that the highest maximum density of rotifer at the end of the research was achieved by rotifer stored in air conditioned room fed with multispecies algae. This showed that rotifers can be stored longer in room storage with AC and fed by multispecies algae.
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Frie, Adrienne C. « Multispecies Futures ». Current Swedish Archaeology 29, no 1 (9 décembre 2021) : 34–37. http://dx.doi.org/10.37718/csa.2021.02.

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van Dooren, Thom, Eben Kirksey et Ursula Münster. « Multispecies Studies ». Environmental Humanities 8, no 1 (1 janvier 2016) : 1–23. http://dx.doi.org/10.1215/22011919-3527695.

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Jaramillo, David M., Helen Sheridan, Kathy Soder et Jose C. B. Dubeux. « Enhancing the Sustainability of Temperate Pasture Systems through More Diverse Swards ». Agronomy 11, no 10 (24 septembre 2021) : 1912. http://dx.doi.org/10.3390/agronomy11101912.

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Temperate grasslands can be highly productive. However, those that are productive are generally heavily dependent on high inputs of nitrogen (N) fertilizer. Including legumes such as white clover (Trifolium repens L.) in the sward can reduce reliance on N fertilizer. Recent investigations have evaluated the potential of multispecies swards, which are defined as agronomically improved grasslands that include multiple plant functional groups, e.g., grasses, legumes, and forage forbs. Several of the benefits and challenges of multispecies swards are summarized in this review. To date, the most prominent forb species included in multispecies swards are chicory (Cichorum intybus L.) and ribgrass/ribwort plantain (Plantago lanceolata L.). Multispecies swards grown under reduced N fertilizer input conditions can produce as much biomass as monocultures receiving large quantities of N fertilizer. The nutritive value of multispecies swards may potentially be greater than grass-only swards, especially since forbs may contribute additional micro and macro minerals to livestock diet. While challenges associated with multispecies swards may include weed management and facilitating persistence of the forb species in particular, the overall evidence suggests that well-managed multispecies swards can enhance the productivity as well as environmental sustainability of grazing systems.
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Schoenbrun, David L., et Jennifer L. Johnson. « Introduction : Ethnic Formation with Other-Than-Human Beings ». History in Africa 45 (juin 2018) : 307–45. http://dx.doi.org/10.1017/hia.2018.11.

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Abstract:Literature on ethnicity in Africa meets literature on multispecies ethnography to their mutual benefit. Multispecies ethnography considers people together with other-than-human beings, insisting the figure of the human is an interspecific one. We explore the ways in which multispecies ethnography needs history as part of a story about power and politics. But, the burden of the essay argues that historians of ethnicity need multispecies ethnographers’ embrace of a broader canvas of life, in motion at many scales. Historians of ethnicity need a greater awareness of change and continuity in the presence of other-than-human life forms, over time. Those same historians also might adopt the readiness of multispecies ethnographers to recognize other than the descent metaphor at the heart of thinking and making groups.
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Satsuka, Shiho. « Sensing Multispecies Entanglements ». Social Analysis 62, no 4 (1 décembre 2018) : 78–101. http://dx.doi.org/10.3167/sa.2018.620405.

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This article explores how matsutake, with its elusive characteristics that evade human senses, guides humans to cultivate a sensitivity to multispecies entanglements. It analyzes the concept of koto, developed by psychiatrist Bin Kimura, to describe how people learn to notice the events and happenings that a variety of beings are engaging in at every moment, even though these practices often elude human consciousness. Drawing examples from a manga series and two ethnographic cases in Japan—a grassroots satoyama forest revitalization movement and a forest biomass study—the article discusses koto as an ‘ontology’ of entangled life. At the same time, koto raises questions about ‘ontology’, as it indicates the traces of struggle in translating the term itself.
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Irni, Kuura. « Queering Multispecies Bonding ». Humanimalia 12, no 1 (10 septembre 2020) : 188–209. http://dx.doi.org/10.52537/humanimalia.9435.

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By conducting a queer theoretical reading of Donna Haraway’s work on dogs, this paper develops queer feminist animal studies by focusing on the critique and rethinking of anthropocentric family and relationship norms. Starting with Haraway’s proposal in Staying with the Trouble to “make kin, not babies” and to question the link between genealogy and kin, this paper reads Haraway’s dog stories as queer feminism. The paper argues that Haraway’s thinking aligns with queer feminist scholarship that questions the link between sex and reproduction also in nonhuman animal lives and that recognizes the value of alternatives to compulsory sexuality and couple normativity, such as Angela Willey’s ethics of antimonogamy. By conceptualizing a romantic, non-sexual relationship with a dog, Haraway’s texts destabilize normative ideals of significant relationships between adults and present an alternative to the anthropocentric understandings of intimacy and family. The paper suggests that initiating a discussion about these alternative relationship constellations in the context of feminist animal studies makes it possible to build connections between critical perspectives in animal studies and queer and sexuality studies in order to develop alternatives to couple normative, racialized, class-based, and anthropocentric family and relationship norms.
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Khan, Steven, et G. Michael Bowen. « Why Multispecies’ Flourishing ? » Journal of Research in Science, Mathematics and Technology Education 5, no 1 (15 janvier 2022) : 1–10. http://dx.doi.org/10.31756/jrsmte.515.

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Coker, Samuel T. « Multispecies Toxicity Testing ». International Journal of Crude Drug Research 25, no 3 (janvier 1987) : 188–92. http://dx.doi.org/10.3109/13880208709060927.

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Thèses sur le sujet "Multispecie"

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MARIANI, JACOPO. « MULTICENTRE AND MULTISPECIES PRECLINICAL TRIAL OF REMOTE ISCHEMIC CONDITIONING IN ANIMAL MODEL OF ACUTE ISCHEMIC STROKE (TRICS–BASIC) ». Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/403043.

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Il condizionamento ischemico remoto (RIC) risulta essere un candidato ideale per essere investigato in uno studio multicentrico volto al trattamento dell'ictus ischemico acuto (AIS). L’ efficacia terapeutica del RIC è stata dimostrata a livello preclinico, come riportato da precedenti studi ottenuti da singoli laboratori; ciò nonostante, gli studi clinici di fase II-III non hanno ancora fornito risultati soddisfacenti. TRICS Basic è definita come la fase preclinica del progetto TRICS, un Trial traslazionale multicentrico di Condizionamento Ischemico Remoto in modelli animali di Ictus Ischemico Acuto, sostenuto dell’Organizzazione Italiana sull’ictus (ISO), che ha previsto la collaborazione di 7 università e centri di ricerca italiani. TRICS Basic è uno studio preclinico multicentrico, randomizzato e consistente, oltre ad essere orientato alla pratica traslazionale. Lo studio include due specie animali (ratti e topi) ed entrambi i generi (maschi e femmine) sono ugualmente rappresentati. Lo scopo di questo progetto è quello di studiare l'efficacia del trattamento RIC in modelli preclinici di ictus ischemico acuto. Tutti gli animali allocati nel gruppo MCAo+ (soggetti ad ictus) sono stati sottoposti allo stesso tempo di occlusione (60min nei topi; 100min nei ratti). In particolare, il trattamento è stato applicato bloccando l'arteria femorale ipsilaterale per 10 minuti nei topi e 20 nei ratti. La valutazione dei risultati è stata eseguita in cieco, sia per quanto riguarda l’outcome funzionale dicotomizzato (risultato primario), che per la quantificazione del volume dell'infarto (risultato secondario) a 48 ore. Anche le analisi statistiche sono state eseguite in cieco e secondo un paradigma intention–to–treat. Durante la fase sperimentale iniziale, è stata effettuata una fase di armonizzazione, includendo tutti i centri coinvolti, al fine di ridurre le differenze di valutazione durante la valutazione neurocomportamentale. Dopo aver raggiunto l'obiettivo di interclass correlation (ICC)=0.60, imposto a priori dal protocollo pre–pubblicato, la vera fase sperimentale ha avuto inizio. La coorte sperimentale è composta da n=206 animali (n=110 topi e n=96 ratti) ma solo n=152 sono stati inclusi nell’analisi finale per il gruppo MCAo+ (n=81 topi; n=71 ratti). I risultati ottenuti hanno dimostrato che il RIC ha un effetto positivo a livello dell’outcome funzionale (+20% nei topi; +18% nei ratti) ed è in grado di ridurre l'area della lesione ischemica (-4,3% nei topi; -26,6% nei ratti) in entrambe le specie analizzate. Nonostante il consistente numero di animali utilizzati in questo studio, rispetto ai precedenti studi preclinici su questo trattamento, non abbiamo raggiunto la significatività statistica nei nostri due outcome principali, se confrontiamo le singole specie animali. Al contrario, analizzando tutti gli animali come un’unica specie, abbiamo ottenuto un risultato significativo in entrambi gli outcome. Ciò suggerisce che, analogamente agli studi clinici, una maggiore dimensione della popolazione avrebbe portato a risultati più significativi per quanto riguarda il miglioramento del deficit neurologico e la riduzione del volume dell’infarto, analizzando le singole specie.
Remote ischemic conditioning (RIC) represents an ideal candidate to enter a multicenter trial for acute ischemic stroke (AIS) treatment, since previous results from single laboratories support its efficacy, but unfortunately phase II–III clinical trials still provided inconclusive results. TRICS–Basic is the preclinical trial in the TRICS project, a multicentre translational Trial of Remote Ischemic Conditioning in Acute Ischemic Stroke from the Italian Stroke Organization (ISO) Basic Science network, which consisted in the collaboration of 7 Italian institution. TRICS–Basic is a robust, translationally oriented, multicentre, randomized preclinical trial, which includes two animal species (rats and mice) and both male and female sexes are equally represented. The aim of this project was to investigate the efficacy of RIC treatment in AIS experimental models. All the animals in the MCAo+ groups were subjected to the same time of occlusion (60 min in mice; 100 min in rats). The treatment was applied by clamping the ipsilateral femoral artery for 10 min in mice and 20 min in rats. Blinded outcomes assessment was performed both for dichotomized functional neuroscore (primary outcome) and for infarct volume (secondary outcome) at 48 hours. Statistical analyses were performed in a blind status and according to an intention–to–treat paradigm. During the initial experimental period, we carried out a harmonization phase, including all the involved centres, in order to reduce the assessment bias during the neurobehavioral test evaluation. After we have reached the target of Inter class correlation (ICC) 30.60 imposed a priori by the protocol paper, we started the real experimental phase. The experimental cohort was composed by n=206 animals (n=110 mice and n=96 rats) but only n=168 were allocated in the MCAo+ groups (n=88 mice; n=80 rats) and n=152 animals were included in the study (n=78 mice; n=74 rats). The obtained data showed that RIC improve the good functional outcome (+20% in mice; +18% in rats) and reduce the area of ischemic injury (-4.3% in mice; -26.6% in rats) in both species. Despite the large number of animals used in this study and as compared to previous preclinical studies on RIC treatment, we did not reach the statistical significance in our two major outcomes, if we compare the single species alone. On the contrary, if we combine together all the animals, we obtained a significant result in both the analysed outcomes. This suggest that, similarly to clinical trials, a larger sample size would have resulted in more significant results in the functional and the infarct size outcomes single species analyses.
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Metcalfe, Daniel J. « Multispecies design ». Thesis, University of the Arts London, 2015. http://ualresearchonline.arts.ac.uk/13351/.

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The devastating effects that unsustainable design practices have on the natural world and other species with whom we share this planet have gained widespread awareness and are the driving force behind attempts to develop more sustainable design approaches. These efforts tend to focus on minimising the negative effects that design has on the natural world by reduced material and energy usage. However, the possibility that design may have an active role in mitigating the erosion of biodiversity has only entered the discussion in recent years and remains a marginal activity for design. Following an ongoing paradigm shift calling for the inclusion of a greater diversity of wild animals within human-dominated habitats (as a way of addressing both the erosion of biodiversity and humankind’s alienation from nature), this research proposes that there is a growing need for a design practice capable of responding to the needs of wild animals, while addressing questions of human-animal interaction. In this thesis, Multispecies Design is proposed and developed as a theoretical framework for supporting the shift to more biodiverse human habitats. The research addresses both the physical and socio-cultural requirements of such a shift. Three distinct views define this emerging design approach: recognising animals as clients of design, recognising human-animal interactions as designed experiences and the view of manmade systems as further extensions of ecological systems. The methodological implications of Multispecies Design have been explored in a case study design project concerned with the ecological enhancement of a coastal outfall pipe on a highly frequented beach in Cornwall, UK. The case study explored ways of designing to address the needs of both people and of wild animal species, as well as the interactions between the two groups. It focused on identifying and developing design approaches and tools for studying and representing wild animals in design projects to facilitate their integration into built environments. These tools were further refined in a series of workshops with design and art students carried out during the PhD research. The insights from the practical work, together with the theoretical framework developed alongside them, have led to the development of Principles of Multispecies Design and practical and conceptual Tools for Multispecies Design.
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Mercante, Donald Eugene. « Analysis of multispecies microcosm experiments ». Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/39798.

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Rasmussen, J. « Multispecies effects in larval fish assemblages ». Thesis, University of Aberdeen, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590944.

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A drift study was conducted east of Shetland in May 1996 which collected a range of environmental and biological data on a 6-hourly basis while tracking a patch of fish larvae. The data analysed in this work identified hydrographic sub-domains in the water column before, during, and after the onset of spring bloom conditions. It became evident that the water body which was being tracked was subject to some exchange processes as concentrations of zooplankton concentrations fluctuated to a larger extent than could be accounted for by internal production. A detailed analysis of zooplankton composition and larval fish gut contents were performed for a range of stations throughout the study. Seven species of larval fish were examined to assess potential density dependent processes occurring in the larval fish assemblages. However, the concentrations of larval fish prey items were generally high throughout the study, and the feeding of the entire larval fish assemblage had a negligible potential impact on the standing stock of zooplankton. The individual species of larval fish displayed changes in food selected with increased sizes. Some of the apparent higher relative proportions of prey in larval fish guts were explained from turbulence enhanced encounter rates, but strong selectivity for certain types of prey were still apparent. Conclusively, no density dependent processes were apparent during this study, but there are strong indications of dietary overlap between commercially important species, which potentially could have significant effects during food limitation.
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Martin, Sarah Margaret. « An integrated analysis of multispecies tropical fisheries ». Thesis, Imperial College London, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538691.

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Bottomley, Herbert Christian. « The population biology of multispecies helminth infection ». Thesis, University College London (University of London), 2006. http://discovery.ucl.ac.uk/1445327/.

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Vertebrate hosts are frequently infected with multiple helminth species. There is a body of experimental evidence to suggest that infection with one parasite species can have either an antagonistic or synergistic effect on another species such interactions may occur through parasite establishment, survival and fecundity. The extent to which such interactions are involved in the organization of helminth communities is largely unknown. Mathematical models based on Markov processes are used to explore two themes: 1) The effect of interspecific interactions on the joint distribution of helminth par asites in a population of hosts, and 2) conditions under which interacting species can coexist. To explore the former, models are formulated that describe the pro cess by which helminths of two species are acquired and lost in a cohort of ageing hosts. In these models, the interspecific interaction occurs at the point of parasite establishment within the host such that the rate of establishment depends on the current worm burdens of the two species. The results are used to highlight some of the difficulties associated with inferring interspecific interactions from ecological data. The relationship between competition and species coexistence is investigated us ing models of the long-term dynamics of interacting species. Models are developed in which there is a free-living larval stage whose population size is dependent on the size of the adult worm population. The models are analyzed using 'hybrid' and 'moment-closure' approximations the former involves replacing stochastic com ponents of the model with deterministic approximations, and the latter assumes a functional relationship between higher and lower order moments based on a specified distribution. The Lotka-Volterra model of competition is derived for the case where hosts are equally exposed to parasites of the same species. Coexistence of two compet ing species is promoted by heterogeneous host exposure to each parasite species, provided that the rates of exposure to the two parasite species are not perfectly, positively correlated, and provided that the degree of heterogeneity in host expo sure is similar for both species. In addition, it is shown that the conditions required for coexistence are the same regardless of whether competition occurs at the point of parasite establishment within the host or via parasite fecundity. These results are discussed within the context of helminth community ecology.
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Roth, Andrea J. « Multispecies Character Displacement in Mexican Poeciliopsis Fishes ». BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/8278.

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Competition has long been recognized as a central force in shaping evolution, particularly through character displacement. Yet research on character displacement is biased as it has focused almost exclusively on pairs of interacting species while ignoring multispecies interactions. Unfortunately, communities are seldom so simple that only pairs of species interact, and it is not clear if inferences from pairwise interactions are sufficient to explain patterns in nature. A more realistic approach is to ask how traits evolve when multiple species interact. Here I explore the importance of multispecies competitive interactions on trait evolution in four congeneric species of livebearing fishes in the genus Poeciliopsis (P. prolifica, P. viriosa, P. latidens, and P. presidionis). These species are found co-occurring throughout northwestern Mexico: My first chapter builds a framework for multispecies character displacement research by hypothesizing three effects that an unconsidered competitor, termed a hidden competitor, can have on pairwise interactions and the resulting pattern of character displacement. I show through these effects that research focused solely on pairwise interactions can be misleading for character displacement. I also provide suggestions on how to address character displacement research that incorporates more complexity. In chapter two, I test for character displacement in body shape in the four congeneric species. I found evidence for convergent character displacement in populations of P. prolifica, P. viriosa, and P. latidens. I also found that the convergence in body shape was not consistently in the same direction, meaning that when more than two species co-occurred I did not find a more extreme body shape that when only two species co-occurred. On the contrary, body shape when more than two competitors co-occurred seemed to be intermediate between the shape of two competitors and no competitor. This intermediate shape suggests that evolution in multispecies communities may occur in response to several competitors, rather than pairwise interactions. Finally, in chapter three, I test the effect of several hypothetical selective pressures on life history of P. prolifica, including intraspecies and interspecies competition, factors not often considered in life history evolution. I found that competition, both intraspecific and interspecific, was the most important factor in explaining variation in life history. I also found that the best models were those that included these selective pressures as direct effects as opposed to indirect effects through resource availability. However, it is not clear why competition was supported as a direct effect and future studies are needed to fully understand this aspect. Overall, my research suggests that competition plays an important role in shaping trait evolution, even in traits where it has not been considered. Thus, competition should be included in future studies as it may be an important factor in shaping several traits. I also found that competition in multispecies interactions is more complex than in a simple pairwise interactions, and can be harder to detect due to confounding effects acting in conjunction with competition. My study highlights the importance of competition and of considering multispecies competition to better understand the effects of competition.
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Celiker, Hasan. « Exploring multispecies evolutionary dynamics using model microbial ecosystems ». Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91125.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2014.
76
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 79-85).
Experiments to date probing adaptive evolution have predominantly focused on studying a single species or a pair of species in isolation. In nature, on the other hand, species evolve within complex communities, interacting and competing with many other species. We developed experimental microbial ecosystems with which we can start to answer some of the fundamental questions regarding evolution in complex ecosystems. We first tested how the evolution of cooperation within a species can be affected by the presence of competitor species in an ecosystem. To achieve this, we used sucrose metabolism of budding yeast, Saccharomyces cerevisiae, as a model cooperative system that is subject to social parasitism by cheater strategies. We found that when co-cultured with a bacterial competitor, Escherichia coli, the frequency of cooperator phenotypes in yeast populations increases dramatically as compared to isolated yeast populations. These results indicate that a thorough understanding of species interactions is crucial for explaining the maintenance and evolution of cooperation in nature. Next, we wanted to explore the question of whether evolution in a multispecies community is deterministic or random. We let many replicates of a multispecies laboratory bacterial ecosystem evolve in parallel for hundreds of generations. We found that after evolution, relative abundances of individual species varied greatly across the evolved ecosystems and that the final profile of species frequencies within replicates clustered into several distinct types, as opposed to being randomly dispersed across the frequency space or converging fully. These results suggest that community structure evolution has a tendency to follow one of only a few distinct paths.
by Hasan Celiker.
Ph. D.
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Mattei, Maria Rosaria. « Mathematical modelling of multispecies biofilms for wastewater treatment ». Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1182/document.

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Cette thèse s'intéresse à l'application d'un modèle mathématique unidimensionnel de formation et de croissance de biofilms multi-espèces. Le modèle se compose d'un système d'équations non linéaires aux dérivées partielles hyperboliques, décrivant la croissance d'espèces microbiennes dans le biofilm, et un système d'équations semi-linéaires aux dérivées partielles paraboliques, qui régit la diffusion de substrat de la phase aqueuse vers la matrice du biofilm. L'ensemble conduit à un problème de valeur limite libre, essentiellement hyperbolique. Dans une première étude, l'analyse et la simulation de la phase initiale de croissance du biofilm ont été examinées. Le problème mathématique résultant a été discuté en utilisant la méthode des caractéristiques et le théorème du point fixe a été utilisé pour déterminer l'existence et l'unicité des solutions mathématiques. Un deuxième aspect de la thèse porte sur l'analyse et la prévision de la dynamique des populations microbienne dans plusieurs types biofilms pour le traitement des eaux usées. Le modèle a été appliqué pour simuler la compétition bactérienne et évaluer l'influence de la diffusion du substrat sur la stratification microbienne des biofilms multi-espèces, en incluant les bactéries nitrifiantes, Anammox et bactéries sulfato-réductrices. Dans les deux cas, la méthode des caractéristiques a été utilisée à des fins numériques et l'équation de conservation de masse joue un rôle crucial pour vérifier l'exactitude des simulations. Les résultats des simulations montrent que le modèle est en mesure d'évaluer correctement les effets des conditions limites qui s'exercent sur la concurrence bactérienne. Enfin, ce modèle a été étendu pour inclure le phénomène de colonisation microbienne. Le nouveau modèle est capable de prendre en compte l'invasion de nouvelles espèces en se basant sur un ensemble d'équations non linéaires aux dérivées partielles hyperboliques pour ce qui concerne le processus de croissance. De plus, le processus d'invasion biologique d'espèces nouvelles dans le biofilm a été modélisé par un système d'équations non linéaires aux dérivées partielles paraboliques. Ce modèle d'invasion a été appliqué avec succès pour simuler l'invasion des bactéries hétérotrophes dans les biofilms autotrophes
This dissertation relates to the applications of a one-dimensional mathematical model for multispecies biofilm formation and growth. The model consists of a system of nonlinear hyperbolic partial differential equations, describing the growth of microbial species in biofilms, and a system of semilinear parabolic partial differential equations, which governs substrate diffusion from the surrounding aqueous phase into the biofilm. Overall, this leads to a free boundary value problem, essentially hyperbolic. In a first study, the analysis and simulations of the initial phase of biofilm growth have been addressed. The resulting mathematical problem has been discussed by using the method of characteristics and the fixed-point theorem has been used to obtain existence, uniqueness and properties of solutions. A second aspect of the thesis deals with the analysis and prediction of population dynamics in multispecies biofilms for wastewater treatment. The model has been applied to simulate the bacterial competition and to evaluate the influence of substrate diffusion on microbial stratification for a nitrifying multispecies biofilm including Anammox bacteria and a sulfate-reducing biofilm. In both cases, the method of characteristics has been used for numerical purposes and the mass conservation equation plays a crucial role in checking the accuracy of simulations. The simulation results reveal that the model is able to evaluate properly the effects that boundary conditions exert on bacterial competition. Finally, the biofilm model has been extended to include the colonization phenomenon. The new model is able to take into account the invasion of new species diffusing from bulk liquid to biofilm, still based on a set of nonlinear hyperbolic partial differential equations for what concerns growth process. Indeed, the biological invasion process of new species into the biofilm has been modeled by a system of nonlinear parabolic partial differential equations. The invasion model has been successfully applied to simulate the invasion of heterotrophic bacteria in a constituted autotrophic biofilm and viceversa
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Smith, Leanne. « Predicting yield and profit losses from multispecies weed competition ». Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388471.

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Livres sur le sujet "Multispecie"

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Kaushik, Karishma S., et Sophie E. Darch, dir. Multispecies Biofilms. Cham : Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-15349-5.

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Multispecies Bodysnatching. [Allston, MA?] : the author, 2014.

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1923-, Cairns John, Ecological Society of America et SETAC (Society), dir. Multispecies toxicity testing. New York : Pergamon Press, 1985.

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Rødseth, Tor, dir. Models for Multispecies Management. Heidelberg : Physica-Verlag HD, 1998. http://dx.doi.org/10.1007/978-3-642-99793-8.

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McIntyre-Mills, Janet J., et Yvonne Corcoran-Nantes, dir. From Polarisation to Multispecies Relationships. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6884-2.

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Flaaten, Ola. The Economics of Multispecies Harvesting. Berlin, Heidelberg : Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83395-3.

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Martin, R. B. Project progress review, January 1992. Causeway, Harare, Zimbabwe : WWF Multispecies Project, 1992.

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Cumming, D. H. M. Project outline for the development of multispecies animal production systems. Causeway, Harare, Zimbabwe : WWF Multispecies Project, 1988.

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Project, WWF Multispecies. Annual report, 1990. Causeway, Harare, Zimbabwe : The Project, 1990.

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De Bruyn, Ben. The Novel and the Multispecies Soundscape. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-30122-4.

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Chapitres de livres sur le sujet "Multispecie"

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De Bruyn, Ben. « Multispecies Multilingualism ». Dans The Novel and the Multispecies Soundscape, 133–82. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-30122-4_4.

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Hilborn, Ray, et Carl J. Walters. « Multispecies Analysis ». Dans Quantitative Fisheries Stock Assessment, 434–49. Boston, MA : Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3598-0_14.

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Wijunamai, Roderick. « Multispecies Studies ». Dans The Routledge Companion to Northeast India, 342–47. London : Routledge India, 2022. http://dx.doi.org/10.4324/9781003285540-57.

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Oliver, Catherine. « Multispecies futures ». Dans Veganism, archives, and animals, 104–17. London : Routledge, 2021. http://dx.doi.org/10.4324/9781003141211-7.

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Malone, Karen, et Carol A. Taylor. « Multispecies Kin ». Dans A Glossary for Doing Postqualitative, New Materialist and Critical Posthumanist Research Across Disciplines, 90–91. London : Routledge, 2021. http://dx.doi.org/10.4324/9781003041153-45.

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Beisel, Uli, et Carsten Wergin. « Understanding multispecies mobilities ». Dans Mosquitopia, 32–46. London : Routledge, 2021. http://dx.doi.org/10.4324/9781003056034-4.

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Matsuda, Hiroyuki, Peter A. Abrams et Toshio Katsukawa. « Multispecies Fisheries Management ». Dans Ecological Risk Management, 289–307. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6934-4_18.

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Ameli, Katharina. « Multispezies-Ethnographie ». Dans Handbuch Soziologische Ethnographie, 605–14. Wiesbaden : Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-26405-5_39.

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Ameli, Katharina. « Multispezies-Ethnographie ». Dans Handbuch Soziologische Ethnographie, 605–14. Wiesbaden : Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-26405-5_39.

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Broglio, Ron. « Multispecies ». Dans The Cambridge Companion to Environmental Humanities, 128–40. Cambridge University Press, 2021. http://dx.doi.org/10.1017/9781009039369.011.

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Actes de conférences sur le sujet "Multispecie"

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Clarke, Rachel E. « Ministry of Multispecies Communications ». Dans DIS '20 : Designing Interactive Systems Conference 2020. New York, NY, USA : ACM, 2020. http://dx.doi.org/10.1145/3393914.3395845.

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Haldrup, Michael, Kristine Samson et Thomas Laurien. « Designing for Multispecies Commons ». Dans PDC 2022 : Participatory Design Conference 2022. New York, NY, USA : ACM, 2022. http://dx.doi.org/10.1145/3537797.3537801.

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Mancini, Clara, Rob Harris, Brendan Aengenheister et Claire Guest. « Re-Centering Multispecies Practices ». Dans CHI '15 : CHI Conference on Human Factors in Computing Systems. New York, NY, USA : ACM, 2015. http://dx.doi.org/10.1145/2702123.2702562.

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Mancini, Clara, Sha Li, Grainne O'Connor, Jose Valencia, Duncan Edwards et Helen McCain. « Towards multispecies interaction environments ». Dans ACI '16 : Third International Conference on Animal-Computer Interaction. New York, NY, USA : ACM, 2016. http://dx.doi.org/10.1145/2995257.2995395.

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Roudavski, Stanislav. « Multispecies Cohabitation and Future Design ». Dans Design Research Society Conference 2020. Design Research Society, 2020. http://dx.doi.org/10.21606/drs.2020.402.

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Popov, M., N. Sterligov, O. Lakhmanskaya et K. Lakhmanskiy. « Multispecies Segmented Trapped Ion Architecture for Scalable Quantum Computing ». Dans Quantum 2.0. Washington, D.C. : Optica Publishing Group, 2022. http://dx.doi.org/10.1364/quantum.2022.qw3a.7.

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Here we propose a new way to scale up trapped ion quantum computer based on long multispecies ion chains. Mass difference of ions leads to chain segmentation and allows to implement high-fidelity entangling gates.
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Krebbers, R., N. Liu, K. E. Jahromi, M. Nematollahi, O. Bang, G. Woyessa, C. R. Petersen et al. « Mid-infrared Broadband Spectroscopy for Plasma Analysis ». Dans Optics and Photonics for Sensing the Environment. Washington, D.C. : Optica Publishing Group, 2022. http://dx.doi.org/10.1364/es.2022.etu4h.4.

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We demonstrate the application of a home-built Fourier Transform Spectrometer based on a mid-infrared supercontinuum source for multispecies detection in a plasma reactor. The results show the high capability of the system for plasma analysis.
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Wang, Chunting Michelle, et Alastair Lewis. « Low-Cost Multispecies Air Quality Sensor ». Dans 8th Conference of the International Forum on Urbanism (IFoU). Basel, Switzerland : MDPI, 2015. http://dx.doi.org/10.3390/ifou-e001.

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Liu, Szu-Yu (Cyn). « Designing for Multispecies Collaboration and Cohabitation ». Dans CSCW '19 : Computer Supported Cooperative Work and Social Computing. New York, NY, USA : ACM, 2019. http://dx.doi.org/10.1145/3311957.3361861.

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Wang, C. M. « Low-cost multispecies air quality sensor ». Dans AIR POLLUTION 2015, sous la direction de B. D. Esse et A. C. Lewis. Southampton, UK : WIT Press, 2015. http://dx.doi.org/10.2495/air150091.

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Rapports d'organisations sur le sujet "Multispecie"

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Rindorf, Anna, Jörn Schmidt, Bjarte Bogstad, Stuart Reeves et Yvonne Walther. A Framework for Multispecies Assessment and Management. Nordic Council of Ministers, juin 2013. http://dx.doi.org/10.6027/tn2013-550.

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Gault, K. A., R. S. Lillo, D. J. Temple et P. K. Weathersby. Multispecies Decompression Model Using Asymmetrical Gas Kinetics. Fort Belvoir, VA : Defense Technical Information Center, janvier 2003. http://dx.doi.org/10.21236/ada444048.

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Tessarotto, M., et R. B. White. Multispecies transport theory for axisymmetric rotating plasmas. Office of Scientific and Technical Information (OSTI), janvier 1992. http://dx.doi.org/10.2172/5934826.

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Tessarotto, M., et R. B. White. Multispecies transport theory for axisymmetric rotating plasmas. Office of Scientific and Technical Information (OSTI), janvier 1992. http://dx.doi.org/10.2172/10115634.

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Stagg, Alan K., et Su-Jong Yoon. Hydra-TH Extensions for Multispecies and Thermosolutal Convection. Office of Scientific and Technical Information (OSTI), septembre 2015. http://dx.doi.org/10.2172/1221742.

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Golding, Jessie D., Michael K. Schwartz, Kevin S. McKelvey, John R. Squires, Scott D. Jackson, Cara Staab et Rema B. Sadak. Multispecies mesocarnivore monitoring : USDA Forest Service multiregional monitoring approach. Ft. Collins, CO : U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2018. http://dx.doi.org/10.2737/rmrs-gtr-388.

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Golding, Jessie D., Michael K. Schwartz, Kevin S. McKelvey, John R. Squires, Scott D. Jackson, Cara Staab et Rema B. Sadak. Multispecies mesocarnivore monitoring : USDA Forest Service multiregional monitoring approach. Ft. Collins, CO : U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2018. http://dx.doi.org/10.2737/rmrs-gtr-388.

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G. Rewoldt, R.V. Budny et W.M. Tang. Multispecies Density and Temperature Gradient Dependence of Quasilinear Particle and Energy Fluxes. Office of Scientific and Technical Information (OSTI), août 2004. http://dx.doi.org/10.2172/828597.

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Indireshkumar, K., et W. M. Jr Stacey. Effect of a poloidal electric field on neoclassical transport in a multispecies tokamak plasma. Office of Scientific and Technical Information (OSTI), décembre 1992. http://dx.doi.org/10.2172/6742695.

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Indireshkumar, K., et W. M. Jr Stacey. Effect of a poloidal electric field on neoclassical transport in a multispecies tokamak plasma. Office of Scientific and Technical Information (OSTI), décembre 1992. http://dx.doi.org/10.2172/10130925.

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