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Dissertations / Theses on the topic 'Insect assemblages'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Perry, David William. "The analysis of sub-fossil insect assemblages : a numerical approach." Thesis, University of Birmingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509342.

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The application of numerical techniques within palaeoentomology has been sporadic and of a largely simplistic nature. In particular, the assessment of faunal similarity has relied mainly upon subjective value judgements; similarly, the reconstruction of past climates using fossil Coleoptera has been undertaken with only a limited application of numerical methods. This thesis presents a computational approach to these problems. Although the intrinsic properties of palaeoentomological sample units impose limitations on the validity of a statistical analysis of faunal similarity, the use of such

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2

Peeters, Paula J. (Paula Jane) 1969. "Relationships between leaf traits and herbivorous insect assemblages in a temperate Australian forest." Monash University, Dept. of Biological Sciences, 2001. http://arrow.monash.edu.au/hdl/1959.1/8792.

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3

Littlewood, Nick. "The response of plant and insect assemblages to the restoration of heather moorland." Thesis, University of Aberdeen, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421334.

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Heather moorland is highly valued for its economic, cultural and biodiversity interest. Recent declines in moorland extent are largely attributable to intense livestock grazing pressure and atmospheric nitrogen deposition. Their combined influence leads to a replacement of <i>Calluna vulgaris</i> as the dominant plant by graminoids, especially <i>Molinia caerulea </i>or <i>Nardus stricta</i>. Recent management has sought to reverse this process and restoration projects utilising either grazing control or more intensive mechanical methods have been initiated at a number of sites. However th

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4

Dittler, Matthew Jason. "Ecology of Root-Feeding Insect Assemblages in Fire-Manipulated Longleaf Pine-Wiregrass Ecosystems." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/50858.

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Root-feeding insects can have top-down influence on vegetative composition and ecosystem processes; however, they may respond to bottom-up factors such as soil resources, site productivity, and disturbance. My research addressed the following questions: (1) Do disturbance (fire), vegetative composition, soil resources, and fine root standing mass influence the structure of root-feeding insect assemblages? (2) What types of roots do root-feeding insects eat, and do they forage selectively? (3) Do root-feeding insects influence fine root productivity? To address these questions, I studied roo

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5

Hill, Michael J. "Insect death assemblages and the interpretation of woodland history : evidence from the Vale of York." Thesis, University of York, 1993. http://etheses.whiterose.ac.uk/10927/.

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6

Schmalholz, Martin. "Resistance and recolonization of bryophyte assemblages following disturbances : - detecting patterns and exploring mechanisms." Doctoral thesis, Stockholm : Department of Botany, Stockholm University, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-38883.

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Diss. (sammanfattning) Stockholm : Stockholms universitet, 2010.<br>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Submitted. Paper 3: Manuscript. Paper 4: Manuscript.

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7

Grimbacher, Peter Siegfried. "Beetle Assemblage Responses to Rainforest Deforestation and Reforestation in North-Eastern Australia." Thesis, Griffith University, 2007. http://hdl.handle.net/10072/365285.

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Insects are well recognised as being the major contributor to global biodiversity, and for their critical involvement in many biotic interactions. Most of the insect diversity is found in tropical rainforests. However, these forests are threatened by high rates of clearing and the subsequent fragmentation of remaining habitat. The effects on biota, particularly insects, are poorly understood as are the mechanisms mediating faunal changes. Reforestation could potentially alleviate some of the deleterious effects of forest loss and fragmentation. However, because reforestation is a relatively ne

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8

Schoeman, Colin Stefan. "Synergistic impact of invasive alien plants and the alien Argentine ant on local ant assemblages in the Western Cape." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/21759.

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Thesis (MSc)--Stellenbosch University, 2008.<br>ENGLISH ABSTRACT: Alien trees, Pinus spp. and Eucalyptus spp., affect ants negatively in the Cape Floristic Region (CFR), a global biodiversity hotspot in South Africa. They reduce ant abundance and species richness, thus also changing ant assemblage structure. This is alarming, because almost 1300 species of plant species in the CFR are dispersed by certain indigenous ants, and thus there is concern for an indirect effect on indigenous plant assemblages. One of the most impacting ant species on seed dispersal is the invasive Argentine ant

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9

Shimizu, Kaya. "Host plant use in the assemblage of herbivorous insects on Macaranga myrmecophytes." Kyoto University, 2014. http://hdl.handle.net/2433/188797.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(人間・環境学)<br>甲第18359号<br>人博第672号<br>新制||人||162(附属図書館)<br>25||人博||672(吉田南総合図書館)<br>31217<br>京都大学大学院人間・環境学研究科相関環境学専攻<br>(主査)教授市岡孝朗, 教授加藤眞, 教授松井正文<br>学位規則第4条第1項該当

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10

Chung, Arthur Y. C. "The diversity of Coleoptera assemblages in different habitat types in Sabah, Malaysia, with special reference to herbivory." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299010.

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11

Desbordes, Cloé. "Étude du contact mécanique et électrique réalisé par hybridation de micro-tubes oxyde et de nano-inserts." Electronic Thesis or Diss., Paris, HESAM, 2024. http://www.theses.fr/2024HESAE017.

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L’assemblage flip-chip de composants photoniques à faible pas pixel, particulièrement sensibles car constitués de matériaux hétérogènes, rencontre de nombreux verrous technologiques liés à l’utilisation de procédés traditionnels impliquant une montée en température (thermocompression, brasage, etc.). L’assemblage par insertion à température ambiante, à l’aide d’interconnexions dont la fabrication est compatible avec les procédés traditionnels de fonderie, s’avère donc être une solution adaptée à ces problématiques. L’objectif de cette thèse est de développer ce procédé d’assemblage à travers l

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12

Alalouni, Urwa [Verfasser], and Roland [Akademischer Betreuer] Brandl. "Insects in forests. Assemblages, effects of tree diversity and population dynamics / Urwa Alalouni. Betreuer: Roland Brandl." Marburg : Philipps-Universität Marburg, 2014. http://d-nb.info/1059856425/34.

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13

Grégoire, Taillefer Amélie. "Colonization of restored peatlands by insects : Diptera assemblages in mined and restored bogs in eastern Canada." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112626.

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The impact of peatland restoration on Diptera assemblages was studied across multiple organizational levels (taxon, size class, trophic group) among abandoned-mined, restored and natural sites of three bogs and the environmental variables affecting those assemblages were determined. More than 22,000 individuals representing 716 species were collected using pan traps, sweeping and Malaise traps. Restored and abandoned sites were similar to each other and both distinct from natural sites as shown by small-size class, acalyptrate and trophic assemblages. However, abandoned sites showed much lower

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14

Damien, Maxime. "Favoriser les ennemis naturels de ravageurs par la diversité végétale dans un contexte hivernal." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1B027/document.

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L’agriculture intensive et les changements climatiques ont profondément modifié la biodiversité et les systèmes d’interactions trophiques dans les paysages agricoles, entrainant la perte de services écosystémiques tel que le contrôle biologique de ravageurs. La lutte biologique par conservation vise à restaurer la complexité des réseaux trophiques au sein des terres cultivées par l’utilisation de la diversité végétale et la mise en place d’aménagements fonctionnels. Ces travaux de thèse ont cherché à identifier, par des expériences en laboratoire et trois hivers de suivi des populations, comme

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15

Martin, Grant Douglas. "Drivers of macrophyte assemblages in South African freshwater systems." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1004127.

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Potentially damaging submerged invasive freshwater macrophytes have been identified in South African freshwater systems, but have received less attention than their floating counterparts. To ascertain the changes and effects that these species may have on macrophyte ecology, an understanding of the drivers of macrophyte assemblages is essential. The aims of this thesis were to investigate select abiotic and biotic factors driving introduction, establishment and spread of submerged macrophytes in South Africa. Surveys on the status of submerged plant species in South Africa were conducted to fi

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16

Godfrey, Thomas George. "On the floral rewards and flower-visitor assemblages of annual urban flower meadow seed mixes." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28945.

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Flower seed mixes are increasingly used to enhance the biodiversity and amenity values of urban green spaces. Urban or “pictorial” flower seed mixes are often used because they are designed using cultivars and non-native species to provide more colourful and longer-lasting flower displays. Although these seed mixes are effective in providing a high density of large colourful flowers, over an extended season, their value for biodiversity, and in particular the floral rewards they provide for flower-visitors, is largely unknown. The overall aim of my thesis was to assess and improve the value of

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17

Guyomar, Cervin. "Développement et applications d'outils d'analyse métagénomique des communautés microbiennes associées aux insectes." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1B049/document.

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Ces travaux de thèse reposent sur le double objectif de proposer des approches innovantes pour l’étude des relations entre un hôte et son microbiote, et de les appliquer à la description fine de l’holobionte du puceron du pois par des données métagénomiques. Les relations symbiotiques façonnent le fonctionnement et l’évolution de tous les organismes, mais restent décrites de manière imparfaite, notamment à cause de la difficulté à caractériser la diversité génomique des partenaires microbiens constitutifs des holobiontes. L’essor des technologies de séquençage métagénomique révolutionne l’étud

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18

Rambaud, David. "L'insecte comme métaphore de l'assemblage : une recherche entomologique et historique sur les conditions d'apparition de l'objet manufacturé dans l'art." Paris 8, 2009. http://octaviana.fr/document/150986920#?c=0&m=0&s=0&cv=0.

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Plusieurs thèmes traversent les aspects en apparence si différents de cette recherche : l'insecte d'abord, qui est à l'origine de la démarche plastique et devient l'agent et le guide de notre déambulation dans l'histoire. De petites fabrications dérisoires faites de résidus récoltés au cours d’itinéraires dans Paris, sont à l'origine de multiples questionnements sur l'assemblage. L'institution de quelques règles de fabrication permet, à leur image, de parler essentiellement d'assemblages figuratifs réalisés par récupération d'objets manufacturés. L'entomologie, à la méthodologie si rigoureuse,

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19

Aubert, Cyril. "Changements environnementaux et climatiques dans l'ouest iranien durant les 15000 dernières années : apport des assemblages fossiles de chironomes (insectes, diptères) des séquences lacustres dans les provinces de Fars (SO Iran) et d'Ardabil (NO Iran)." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0400.

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Plusieurs questions se posent lors des études paléo-environnementales en Asie du sud-ouest : (i) le retard de 4 500 ans de l’expansion postglaciaire de la forêt dans le Zagros, (ii) les changements hydroclimatiques au début de la néolithisation et de la domestication et (iii) le rôle des changements climatiques dans les changements écosystémiques et sociétaux. En raison de la position géographique stratégique de l’Iran, les études paléo environnementales en Iran peuvent aider à répondre à ces questions. Selon nos résultats, les chironomes (insectes - diptères), utilisés comme bioindicateurs pa

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20

Le, Yannou-Cateine Maureen. "La myrmécochorie en nouvelle-Calédonie : importance du contexte et impact des fourmis introduites sur ce service." Thesis, Nouvelle Calédonie, 2017. http://www.theses.fr/2017NCAL0007/document.

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La biosphère traverse une crise de biodiversité pour laquelle les milieux insulaires sont l’épicentre. Les invasions biologiques y constituent l’un des principaux facteurs de forçage, notamment du point de vue de l’altération des mutualismes, pour le fonctionnement et le maintien des écosystèmes. Durant notre travail en Nouvelle-Calédonie, nous nous sommes intéressés à un groupe clé de voute pour le fonctionnement des écosystèmes, les fourmis, et leur implication vis-à-vis de la dispersion de graines (myrmécochorie). Nous avons réalisé la première identification de plantes autochtones myrmécoc

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21

Chuang, Chi-Chou, and 莊棨州. "Vertical Distribution of Insect Assemblages in the Cryptomeria japonica D. Don Plantation in Xitou." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/96192529335095052820.

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碩士<br>國立臺灣大學<br>昆蟲學研究所<br>102<br>Forest canopy has significant contributions to forest productivity, ecosystem function and global climate condition. However, due to the difficulty of vertical movement in forests, the forest canopy is widely recognized as one of poorly known ecosystems on earth. Previous studies have showed that the differentiation of forest strata affects the vertical distribution of forest animals. In order to study the vertical stratification of insect in artificial plantations at Xitou, the investigation was carried out at the flux tower located in a Cryptomeria japonica f

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22

Chuang, Tzu-Ying, and 莊子瑩. "The Investigation on Aquatic insect Resource of Ponds and assemblage dynamics at Hualien County." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/h6g6nt.

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碩士<br>國立東華大學<br>自然資源與環境學系<br>100<br>This study was conducted between 2010-2011, the monthly to survey in HualienCounty, environmental factors and aquatic insect resources at 18 pond in the Hualien County. A total of 25842 aquatic inect specimens were collected and 92 taxa were identified. Theseaquatic insect included Ephemeroptera, Coleoptera, Odonata, Hemiptera, Diptera, Lepidoptera. The dominant taxon at sites 1,3,4,7,14,16 were Paraplea japonica ,at site 2,5,6,8,10,13,15,17 were Cloeon sp.; at site 9 was Microvelia sp.,at site 11 was Hydroglyphus flammulatus, at site 12, 18 were Copera marg

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23

Rader, Romina. "The provision of pollination services to agroecosystems by a diverse assemblage of wild, unmanaged insect taxa." Thesis, 2010. https://researchonline.jcu.edu.au/21912/1/01front.pdf.

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The current global pollination crisis highlights the advantages of the provision of pollination services by a suite of core pollinators. Recent declines in honeybee populations have focused attention on the potential for unmanaged insects to replace them as pollinators of global food crops. The ability of unmanaged pollinators to replace services currently provided by honeybees requires understanding of their efficiency as pollinators as well as the spatial and temporal variability of their services, yet few quantitative assessments currently exist. In order to understand if unmanaged pollinat

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24

Scott, Ryan William. "The diversity and composition of benthic macroinvertebrate assemblages in streams in the Mackenzie River system, Northwest Territories." Thesis, 2010. http://hdl.handle.net/10012/4984.

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Impending natural resources development and concern about the effects of climate change have spurred increased efforts to study and monitor aquatic habitats in the Mackenzie River system. As part of Environment Canada’s attempt to survey the system in advance of the construction of the Mackenzie Gas Pipeline, benthic macroinvertebrates were sampled at 50 streams spanning the geographical range of the Mackenzie system in the Northwest Territories, Canada, to assess spatial patterns in diversity and assemblage structure and the environmental factors driving them. Replicated, quantitative D-net s

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25

Niba, Augustine Suh. "Dragonfly assemblage dynamics and conservation at small reservoirs in KwaZulu-Natal, South Africa." Thesis, 2004. http://hdl.handle.net/10413/5638.

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A study of the odonate fauna was carried out at the edge of a major escarpment, in eastern South Africa, using the same methodology as has been used in the temperate regions to obtain a sub-tropical perspective. The study used the macroecology approach to compare patterns and responses of these animals (at the developmental stages of larva, tenerals and adults) to seasonal, topographical and anthropogenic disturbances. The habitats used were small, but well-established reservoirs located at five elevational gradients: Stainbank Nature Reserve (100 m), Krantzkloof Nature Reserve (450 m), Nation

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