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Dissertations / Theses on the topic 'Soil biological activity'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Franey-Gardiner, Mercedes. "The dynamics and biological activity of ALS-inhibiting herbicides in soil." Thesis, Cranfield University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426107.

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2

Berglund, Hanna. "Biological Soil Invertebrate Activity in a Tropical Rainforest : A comparison of soil invertebrate activity in two tropical rain forests in Borneo." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-411109.

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Logging of tropical forests is increasing worldwide. Logging alters the forest conditions such as temperature, soil water content and litter input into the soil. This study explored how soil invertebrate activity in Borneo differs between pristine forests and two secondary forests, with 10 and 40 years of recovery time since the last logging. To measure the soil fauna feeding activity, the bait lamina stick method was applied. The study was conducted in Sabah, Malaysian Borneo, during April and May 2019. 33 forest plots were examined with ten lamina sticks placed in each of the three replicas

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3

Choosai, Chutinan. "Biological activity in paddy fields : the role of soil engineers in ecosystem functioning." Paris 6, 2010. http://www.theses.fr/2010PA066156.

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Les ingénieurs du sol modifient les propriétés physicochimiques des sols à travares la création de structures biogéniques. Ce travail vise à déterminer le rôle respectif de deux types de structures : les buttes termitiques et les turricules de vers de terre. Les buttestermitiques agissent comme des sites de hute activité boilogique. Ils constituent des refuages pour la macrofaune. Ces buttes sont enrichies en C,K,P et argiles par rapport aux sols environnants. Les vers de terre en accumulant leurs turricules au pied du riz favorise l'hétérogénèïté spatiale. Ces structures biogéniques constitue

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4

Park, Kee Choon. "Enzymatic activity, microbial diversity, and weed seed banks in soils receiving different organic amendments and the biological fertilizer EM(tm) /." free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p3164535.

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Thesis (Ph.D.)--University of Missouri-Columbia, 2004.<br>(tm) after EM in title is for Trademark symbol. Typescript. Vita. Includes bibliographical references (leaves 120-142). Also available on the Internet.

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5

Kurek, Danielle K. "Effects of prescribed burning on soil physical, biological, and chemical properties of the Oak Openings region of Northwest Ohio." Toledo, Ohio : University of Toledo, 2010. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1271430752.

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Thesis (M.S.)--University of Toledo, 2010.<br>Typescript. "Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Masters of Science Degree in Biology." "A thesis entitled"--at head of title. Title from title page of PDF document. Bibliography: p. 58-63.

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D'AMICO, MICHELE EUGENIO. "Soil ecology and pedogenesis on ophiolitic materials in the western Alps (Mont Avic Natural Park, North-western Italy): soil properties and their relationships with substrate, vegetation and biological activity." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2009. http://hdl.handle.net/10281/10401.

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Soils formed from ultramafic rocks are normally by pH values close to neutrality, a high base status and are usually rich in Mg, Fe and heavy metals. The low Ca/Mg ratio and the high heavy metal content could cause toxic effects in the biological communities. Plant communities, in particular, are usually different from nearby areas with different substrates and rich in endemisms and adapted species and subspecies. Despite their great environmental and ecological interest, pedological and ecological properties of mountain or boreal soils developed on similar substrates have seldom been studied

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7

Oppong, Francis Kofi. "Studies on the biological activity of a novel herbicide (Triasulfuron) including studies of mobility and persistence in soil." Thesis, Bangor University, 1988. https://research.bangor.ac.uk/portal/en/theses/studies-of-the-biological-activity-of-a-novel-herbicide-triasulfuron-including-studies-of-mobility-and-persistence-in-soils(20ca442c-519c-4e3a-a11e-9e0b162ff25e).html.

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Triasulfuron (3-(6-methoxy-4-methyl-1,3,5-triazin-2-yl)-1-[2-(2- chloroethoxy)-phenylsulfonyl)-urea} is a new pre- and post-emergence herbicide developed for the control of broad-leaved_'Teeds and some grasses in small grain cereals at rates of 10-20gha . Oilseed rape, pea, broad bean, Senecio vulgaris, Veronica persica, Lolium renne, Poa annua, Poa trivialis and prates were severely a ed 5y pre-emergence and post-emergence applications of triasulfuron but wheat and barley were much more resistant. The development of injury symptoms was generally slow and was characterized by an initial growth

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8

Shi, Shengjing. "Influence of root exudates on soil microbial diversity and activity." Lincoln University, 2009. http://hdl.handle.net/10182/1549.

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Interactions between plant roots and soil microorganisms in the rhizosphere are critical for plant growth. However, understanding of precisely how root exudates influence the diversity and activity of rhizosphere microorganisms is limited. The main objective of this study was to investigate the effect of radiata pine (Pinus radiata) root exudates on rhizosphere soil microbial communities, with an emphasis on the role of low molecular weight organic anions. The study involved the development and validation of new methods for investigating rhizosphere processes in a purpose-built facility. This

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9

Uhrová, Anna. "Remediační potenciál huminových kyselin." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-234455.

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V předložené práci byly testovány modifikované lignitické huminové kyseliny za účelem zjištění jejich schopnosti remediace zemědělské půdy. Před samotnou extrakcí jednotlivých huminových kyselin byl lignit modifikován jednou ze série deseti organických kyselin. Cílem modifikace byla simulace procesů vyskytujících se v rizosféře, tj. procesů, kdy malé organické molekuly způsobují změny ve struktuře půdní organické hmoty, během nichž dochází k produkci biologicky aktivních agregátů/molekul podílejících se na růstu rostlin. Prvním krokem této práce bylo zkoumání fyzikálně chemických vlastností vy

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10

Short, Nicolyn. "Implications of green manure amendments on soil seed bank dynamics." University of Western Australia. School of Earth and Geographical Sciences, 2006. http://theses.library.uwa.edu.au/adt-WU2006.0022.

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[Truncated abstract] Weeds are a major limitation to agricultural and horticultural production and the main method of control is the use of herbicides. In addition to the resulting chemical pollution of the environment, the wide spread and continues use of herbicides have resulted in many weeds developing resistance to commonly used herbicides. This study investigated the potential of using green manures as a cultural method of control of weed invasion in agricultural fields. To understand the general mechanisms involved in the suppression of seed germination in green manure amended soils, see

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11

Fialho, Jamili Silva. "Indicadores da qualidade do solo em Sistemas AgrÃcolas anuais e perenes na Chapada do Apodi - CE." Universidade Federal do CearÃ, 2005. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1739.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Este trabalho se propÃs a avaliar as alteraÃÃes nas atividades microbiana, quÃmica e fÃsica em solo sob sistemas agrÃcolas anuais e perenes na regiÃo da Chapada do Apodi - CE. Procurou-se testar a hipÃtese de que o uso agrÃcola de Ãreas sob sistemas anuais e perenes causam alteraÃÃes ambientais que influenciam a biomassa e a atividade microbiana do solo, reduzindo-a em relaÃÃo a Ãreas sob vegetaÃÃo natural. Foram selecionadas duas Ãreas com respectivas testemunhas (vegetaÃÃo natural); a primeira sob cultivo de bananeiras (Fazenda

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12

Sellami, Fatima. "Fonctionnement biologique du sol sableux sous plantations d’eucalyptus d’âges différents. Effets du reboisement sur les communautés de la macrofaune et des microorganismes du sol en milieu tropical (Congo) et méditerranéen (Maroc)." Thesis, Paris Est, 2013. http://www.theses.fr/2013PEST0066.

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Les plantations d'Eucalyptus, au Congo (région de Pointe-Noire) comme au Maroc (forêt de la Maâmora), soulèvent des controverses quant à leurs effets sur des sols sableux pauvres en matière organique. Dans un enjeu de développement durable de tels écosystèmes anthropiques, les recherches sur le sujet se sont multipliées. Toutefois, les connaissances relatives au fonctionnement biologique des sols sous ces plantations méritent encore d'être approfondies. Principaux acteurs de ce fonctionnement biologique, les organismes vivant dans ces sols et leurs activités ne sont que trop peu décrites, et n

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13

Peixoto, Fabiana Gomes Teixeira. "Biomassa microbiana e atividade enzimática em solos do Estado de São Paulo sob vegetação nativa e cultivados /." Jaboticabal : [s.n.], 2010. http://hdl.handle.net/11449/88281.

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Resumo: A derrubada da vegetação nativa e o uso do solo para atividades agropecuárias podem causar alterações nos atributos do solo que variam de intensidade, em função do tipo de manejo adotado. É importante o acompanhamento na variação dos atributos do solo no sentido de detectar alterações que venham em detrimento do potencial produtivo, as propriedades biológicas são as que primeiro se alteram, sendo de grande validade na detecção de impactos negativos no solo pelo uso. O objetivo deste estudo foi verificar alterações em atributos biológicos, comparando áreas sob vegetação nativa com áreas

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14

Inagaki, Thiago Massao. "CALAGEM E GESSAGEM COMO ESTRATÉGIAS PARA AUMENTO DO SEQUESTRO DE CARBONO EM PLANTIO DIRETO." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2016. http://tede2.uepg.br/jspui/handle/prefix/2279.

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Made available in DSpace on 2017-07-25T19:30:54Z (GMT). No. of bitstreams: 1 Thiago Massao Inagaki.pdf: 2612126 bytes, checksum: d3942c0b1697752935db49380ed68c84 (MD5) Previous issue date: 2016-02-26<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Although recognized, the effects of lime and gypsum applications over soil organic matter dynamics is still scarcely studied. This research was developed based in the hypothesis the lime and gypsum applications create a favorable environment for biological activity, leading to increase of carbon sequestration and crop productivity

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Peixoto, Fabiana Gomes Teixeira [UNESP]. "Biomassa microbiana e atividade enzimática em solos do Estado de São Paulo sob vegetação nativa e cultivados." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/88281.

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Made available in DSpace on 2014-06-11T19:23:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-07-22Bitstream added on 2014-06-13T19:29:17Z : No. of bitstreams: 1 peixoto_fgt_me_jabo.pdf: 730452 bytes, checksum: 4beaffe1c13b67a34f074498f7173677 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A derrubada da vegetação nativa e o uso do solo para atividades agropecuárias podem causar alterações nos atributos do solo que variam de intensidade, em função do tipo de manejo adotado. É importante o acompanhamento na variação dos atributos do solo no sentido de

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16

Пляцук, Леонід Дмитрович, Леонид Дмитриевич Пляцук, Leonid Dmytrovych Pliatsuk, Наталія Олексіївна Макаренко, Наталия Алексеевна Макаренко та Nataliia Oleksiivna Makarenko. "Міграція важких металів у грунті". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/63513.

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До факторів, що сприяють утриманню важких металів ґрунтом відносяться: обмінна адсорбція поверхні глин і гумусу, формування комплексних сполук з гумусом, адсорбція поверхнева і оклюзія а також формування нерозчинних сполук, особливо при відновленні. Важкі метали в ґрунтовому розчині зустрічаються як в іонній так і в зв'язаній формах, які перебувають у певній рівновазі. Міграція важких металів у ґрунтах може відбуватися з рідиною, в газоподібній формі випадковий характер та у твердій фазі.

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17

PRAGANA, Rossanna Barbosa. "Caracterização pedológica e diagnóstico da qualidade de solos sob plantio direto na Serra do Quilombo, sudoeste piauiense." Universidade Federal Rural de Pernambuco, 2011. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5381.

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Submitted by (lucia.rodrigues@ufrpe.br) on 2016-08-17T14:39:38Z No. of bitstreams: 1 Rossanna Barbosa Pragana.pdf: 3950123 bytes, checksum: dc61a316ffe362f9d03041160fc4152e (MD5)<br>Made available in DSpace on 2016-08-17T14:39:38Z (GMT). No. of bitstreams: 1 Rossanna Barbosa Pragana.pdf: 3950123 bytes, checksum: dc61a316ffe362f9d03041160fc4152e (MD5) Previous issue date: 2011-08-26<br>This research was conducted in the Cerrado of Piauí. This area has been targeted for exploitation without due concern for the preservation of natural resources, where production systems are characterized by i

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18

Silva, Danni Maisa da. "Biota do solo em pastagem sob aplicação sucessiva de dejetos de suínos." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/3364.

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The successive use of pig slurry as a soil fertilizer on pasture areas is a common practice in southern Brazil. While there are economic benefits of reuse of waste, this practice poses serious environmental risks and can cause changes in the composition and activity of soil organisms. The soil organisms and microbiological soil quality indicators are very sensitive and allow the monitoring of the soil environment conditions. This work aimed to study the effect of the successive application of pig slurry in pasture areas on the composition, biological activity and microbiological soil quality.

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19

Laurent, Fabien. "Impact de l'oxydation chimique et de la refonctionnalisation sur des paramètres physico-chimiques et biologiques de terres contaminées au HAP." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0033/document.

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Afin de dépolluer et de réhabiliter les sols contaminés par des hydrocarbures aromatiques polycycliques (HAP), différentes techniques ont été développées durant les dernières décennies, mais leur impact sur les fonctions du sol est rarement pris en compte. L'objectif de ce travail était d'évaluer l'impact des traitements par oxydation chimique sur différents paramètres physico-chimiques et biologiques de terres contaminées aux HAP et de proposer des solutions pour restaurer le fonctionnement biologique des terres oxydées. Les différentes expérimentations de laboratoire et de terrain ont montré

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20

Jacometti, Marco Alexander Azon. "Enhancing ecosystem services in vineyards to improve the management of Botrytis cinerea." Phd thesis, Lincoln University. Bio-Protection and Ecology Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20070126.115223/.

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Organic mulches and cover crops mulched in situ were assessed for their effects on B. cinerea primary inoculum and disease levels in inflorescences at flowering and/or bunches at harvest. Organic mulches were used to enhance biological degradation of vine debris to reduce levels of B. cinerea primary inoculum the following season. Four mulch types (anaerobically and aerobically fermented marc (grape pressings), inter-row grass clippings and shredded office paper) were applied under ten-year-old Riesling vines in a ten-replicate randomized block design in New Zealand over two consecutive years.

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21

Rizvi, Syed. "Amendements calco-magnésiens de bassins versants forestiers acidifiés : effets sur la dynamique de la matière organique et l'activité biologique du sol." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4796.

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L'objectif principal de ce travail est d'évaluer si l'amendement calco-magnésien de deux bassins versants acidifiés du massif vosgien (un sur grès et un sur granite) engendre des changements de la morphologie des humus, de l'abondance et de la diversité de la mésofaune, de la biomasse fongique, du stockage de carbone dans les horizons organiques 5 et 7 ans après l'amendement. Par ailleurs, nous avons effectué une étude dans des conditions contrôlées de laboratoire en utilisant des microcosmes contenant les horizons organiques du sol provenant de bassins versants acidifiés sur grès et sur grani

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22

Owen, Andrew. "Phosphorus redistribution in acid archaeological soils from North Wales." Thesis, Bangor University, 1999. https://research.bangor.ac.uk/portal/en/theses/phosphorus-redistribution-in-acid-archaeological-soils-from-north-wales(368d2ef4-5334-461b-8795-4e66a616b62f).html.

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23

Grigaliūnienė, Kristina. "Ilgalaikio tręšimo poveikis skirtingos kilmės dirvožemių biologiniam aktyvumui." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20060117_170123-78293.

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The effect of organic and mineral fertilizers on biological activity of different genesis soils in long-term crop rotation trials was determined. Biological activity was diverse in the soils of different genesis and it activity correlated with some soil chemical properties. Organic and mineral fertilizers and their combinations more increased biological activity in the soil than only mineral fertilizers. Mineral fertilizers suppressed dehydrogenase and alkaline phosphatase activity (180 kg ha-1) with phosphorus and potassium fertilizers. The relationship between the crops grown, their yield an

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24

Dufrénoy, Pierrick. "Valorisation en synthèse organique d'éco-catalyseurs hétérogènes régénérables à partir de matériaux verts cultivés sur des sols contaminés." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMLH30/document.

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Les activités des anciennes industries métallurgiques spécialisées dans la production et la transformation de plomb, de zinc ou d’autres métaux ont engendré une pollution métallique importante des sols selon la localisation de ces derniers. Des études actuelles proposent ainsi des solutions de requalification de ces sols via des processus de phytoremédiation afin de valoriser au maximum les plantes cultivées sur ces sols contaminés. Ce projet de thèse a ainsi été réalisé dans le but de valoriser des écocatalyseurs hétérogènes régénérables. Ces derniers sont obtenus à partir des plantes cultivé

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Laurent, Fabien. "Impact de l'oxydation chimique et de la refonctionnalisation sur des paramètres physico-chimiques et biologiques de terres contaminées au HAP." Electronic Thesis or Diss., Université de Lorraine, 2012. http://www.theses.fr/2012LORR0033.

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Afin de dépolluer et de réhabiliter les sols contaminés par des hydrocarbures aromatiques polycycliques (HAP), différentes techniques ont été développées durant les dernières décennies, mais leur impact sur les fonctions du sol est rarement pris en compte. L'objectif de ce travail était d'évaluer l'impact des traitements par oxydation chimique sur différents paramètres physico-chimiques et biologiques de terres contaminées aux HAP et de proposer des solutions pour restaurer le fonctionnement biologique des terres oxydées. Les différentes expérimentations de laboratoire et de terrain ont montré

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Jezile, G., D. Westfall, G. Peterson, DR Child, DP Turner, and Averbeke W. Van. "Effects of liming on microbial activity and N mineralization in broiler manure-amended soils from Bizana, Eastern Cape, South Africa." Taylor & Francis, 2008. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001059.

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A laboratory incubation study was conducted to determine the effects of liming on microbial activity and N mineralization in two Bizana soils amended with broiler manure. The experimental layout was a 4 x 3 complete factorial experiment with three replicates, arranged in a randomized design. Soil pH, CO2 evolution, and mineral N concentration were measured. After 56 days the soil pH ranged from 4.50 to 5.74 and 4.99 to 5.94, in the Magusheni and Nikwe soils, respectively. The effect of liming on microbial activity and N mineralization differed between the soils. In the Nikwe soil (acid saturat

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Caetano, Ana Luísa Neto. "Derivation of soil screening values for metals in Portuguese natural soil." Doctoral thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13764.

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Doutoramento em Biologia<br>The increasing human activity has been responsible by profound changes and a constinuos degradation of the soil compartment in all the European territory. Some European policies are appearing focusing soil’s protection and the management of contaminated sites, in order to recover land for other uses. To regulate the risk assessment and the management of contaminated soils, many European member states adopted soil guideline values, as for example soil screnning values (SSV).These values are particularly useful for the the first tier of the Ecological Risk Assessment

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El, Alam Imad. "Phytoremédiation d'un sol contaminé de la Bekaa (Liban) : Valorisation de la biomasse par production d'huiles essentielles à activités biologiques." Thesis, Littoral, 2018. http://www.theses.fr/2018DUNK0486.

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Situé au sein de la plaine de la Bekaa au Liban, le fleuve du Litani est sujet à divers rejets agricoles, industriels, domestiques et urbain. Lors de l'irrigation des parcelles agricoles, les eaux du fleuve contaminent le sol et les cultures présentant ainsi un risque pour la santé de l'Homme et l’environnement. Parmi les méthodes de remédiation émergentes et en adéquation avec le développement durable figure la phytoremédiation assistée par les champignons mycorhiziens arbusculaires (CMA). Cependant, la rentabilité de ce mode de gestion constitue l'un des principaux freins à son développement

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Machado, Jéssica Cristine Viera. "RECUPERAÇÃO DE SOLO EM PROCESSO DE ARENIZAÇÃO COM O USO DE ESPÉCIES VEGETAIS EM POMAR DE AMOREIRA-PRETA." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/4857.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The southwest region of Rio Grande do Sul (RS) state has widespread areas with sandy soils in the process of sandification. In the present study, we report the effect of different intercropping in blackberry plants on the soil recuperation and crop productivity. The experiment was conducted in São Francisco de Assis located in southwest region of the RS. The soil was a typical Psament with 60 g kg-1 clay and 0.5 g kg-1 organic matter in the top 0- 10 cm layer. The crops that were intercropped with blackberry were jack bean (Canaval

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Mollard, Claire. "Modèles pour l'étude de l'assimilation du fer par les bactéries et les plantes : sidérophores abiotiques et processus d'échange." Université Joseph Fourier (Grenoble ; 1971-2015), 1997. http://www.theses.fr/1997GRE10295.

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L'acquisition du fer et l'echange de ce metal entre deux siderophores sont des processus biologiques majeurs. Des etudes preliminaires ont montre l'existence de complexes ternaires intermediaires lors de l'echange de ligand. Nous presentons une approche structurale des complexes ternaires par le biais de nouveaux ligands de syntheses. Quatre ligands ont ete prepares, deux comportent des structures mixtes : deux sortes de sous-unites regroupees sur une charpente tripodale. Deux voies de syntheses ont ete envisagees. Dans la premiere, la charpente tripodale etait obtenue par alkylation d'une ami

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Moncousin, Charles. "Évolution de l'AIA, des composés phénoliques, de l'activité spécifique des péroxydases et de la production d'éthylène, au cours de la rhizogénèse, sur des microboutures de vigne (V. Riparia Michx. X V. Rupestris Scheele)." Nancy 1, 1987. http://www.theses.fr/1987NAN10216.

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L'étude de la thizogénèse adventive d'un clone de vigne, cultivé in vitro est menée conjointement par histocytologie et par le suivi de l'évolution temporelle de divers marqueurs métaboliques. Les phénomènes sont étudiés sur des boutures monomodales pourvues ou non de feuilles et dans le segment de tige placé au-dessus ou en-dessous du noeud. . .

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Poissonnier, Marie. "Étude expérimentale de la mycorhization in vitro de clones d'eucalyptus gunnii et eucalyptus gunnie x eucalyptus dalrympleana : Recherche de facteurs impliqués dans l'obtention de synthèses ectomycorhiziennes de ces clones par pisolithus tinctorius." Nancy 1, 1989. http://www.theses.fr/1989NAN10238.

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Introduction des clones d'eucalyptus par culture d'apex. Choix des supports et des milieux de culture susceptibles d'améliorer la mycorhization. Contrôle cytologique ultrastructural des mycorhizes obtenues. Recherche de marqueurs biochimiques de la synthèse ectomycorhizienne. Acclimatation en serre des pousses mycorhizées et étude de leur résistance au carbonate de calcium en vue de transplantations en sol calcaire

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33

Dominy, Carol Susan. "Comparative effects of sugarcane monoculture on soil organic matter status and soil biological activity." Thesis, 2002. http://hdl.handle.net/10413/4913.

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The effects of increasing periods under sugarcane monoculture (managed by preharvest burning) on soil organic matter content and related soil properties were investigated in the 0 to 10 cm layer of a sandy coastal Ochric Cambisol (Glenrosa soils) and a red Rhodic Ferralsol (Hutton soil) from the sugar belt of KwaZulu-Natal. The organic C content at both sites under undisturbed vegetation is about 48 g C kg-I. This declined exponentially with increasing years under sugarcane. For the Glenrosa site, organic C reached a new equilibrium level of about 20 g kg-I while at the Hutton soil the equival

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34

Hwang, Jiann Lang, and 黃建郎. "The effect of fire on biological nitrogen fixation activity of Kuandashi forest soil." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/86330561629525204690.

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Hellwig, Niels. "Spatial patterns of humus forms, soil organisms and soil biological activity at high mountain forest sites in the Italian Alps." Doctoral thesis, 2018. https://repositorium.ub.uni-osnabrueck.de/handle/urn:nbn:de:gbv:700-20181024676.

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The objective of the thesis is the model-based analysis of spatial patterns of decomposition properties on the forested slopes of the montane level (ca. 1200-2200 m a.s.l.) in a study area in the Italian Alps (Val di Sole / Val di Rabbi, Autonomous Province of Trento). The analysis includes humus forms and enchytraeid assemblages as well as pH values, activities of extracellular enzymes and C/N ratios of the topsoil. The first aim is to develop, test and apply data-based techniques for spatial modelling of soil ecological parameters. This methodological approach is based on the concept of digi

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Carvalho, Bruno Miguel Castro. "In vitro screening of the anticancer activity of marine and soil-derived fungi extracts and compounds used alone and combined with doxorubicin:evaluation of the anticancer properties of fungi extracts and compounds alone and in combination with doxorubicin in lung cancer cells." Master's thesis, 2014. https://repositorio-aberto.up.pt/handle/10216/77835.

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Carvalho, Bruno Miguel Castro. "In vitro screening of the anticancer activity of marine and soil-derived fungi extracts and compounds used alone and combined with doxorubicin:evaluation of the anticancer properties of fungi extracts and compounds alone and in combination with doxorubicin in lung cancer cells." Dissertação, 2014. https://repositorio-aberto.up.pt/handle/10216/77835.

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Pfeiffer, Birgit. "Impact of plant species, N fertilization and ecosystem engineers on the structure and function of soil microbial communities." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0022-5E3E-7.

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Mikrobielle Gemeinschaften werden direkt und indirekt von einem komplexen System verschiedenster Interaktionen zwischen biotischen und abiotischen Faktoren beeinflusst. So zum Beispiel von verschiedenen Pflanzenarten und ihren jeweiligen Eigenschaften, dem Nährstoffgehalt des Bodens, sowie dem pH-Wert. Im Gegenzug gestalten Mikroorganismen als wichtige Treiber der C- und N-Kreisläufe ihre Umwelt. Im Rahmen der vorliegenden Arbeit wurden mehrere Studien unter kontrollierten Feld- und Laborbedingungen, sowie unter natürlichen Bedingungen im Freiland durchgeführt, um verschiedene Einflussfaktore

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[Verfasser], Le-Thi-Thu-Huong. "Activity of fungal and bacterial endophytes for the biological control of the root-knot nematode Meloidogyne graminicola in rice under oxic and anoxic soil conditions / von Le Thi Thu Huong." 2010. http://d-nb.info/1005308233/34.

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Baková, Izabela. "Izolace alkaloidů druhu Magnolia soulangeana Soul.-Bod. a studium jejich biologické aktivity." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-361795.

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Baková I.: Isolation of alkaloids of the species Magnolia soulangeana Soul.-Bod. and study of their biological activity. Diploma thesis, Charles University, Faculty of Pharmacy in Hradec Králové, Department of Pharmaceutical Botany and Ecology, Hradec Králové, 2017. Key words: Magnolia solulangeana, secondary metabolites, alkaloids, biological activity. Secondary metabolites of plants are responsible for various biological activities. Alkaloids were described as a potentially suitable for Alzheimer's disease therapy (AD) through their inhibition activities against cholinesterases. Nowadays, th

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Hope, Sharon Margaret. "Biologic activity in two western Oregon Douglas-fir stands : a research link to management /." 1995. http://hdl.handle.net/1957/10877.

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