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Relevant bibliographies by topics / Trophic regimes / Dissertations / Theses

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Dissertations / Theses on the topic 'Trophic regimes'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Morrow, Kristina Joan. "Modification of Trophic Links between an Omnivore and Macroinfaunal Prey from Sandy Beaches of differing Physical Regimes." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4176.

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Sandy beach ecosystems have been studied worldwide; however, ecological data are sparse for the extensive barrier islands of Florida. Accordingly, I investigated the feeding patterns of the ghost crab (Ocypode quadrata), a dominant omnivore inhabiting beaches along the Floridian coast. Density data was collected for ghost crabs and swash macroinfaunal prey. In addition, I utilized stable isotopes in conjunction with the mixing models IsoSource and SIAR to characterize diets of ghost crabs across three barrier islands in spring and summer 2011. Results showed that ghost crabs at Cayo Costa feed

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2

Brown, Briana. "Small-scale community structure and trophic ecology of groundfishes in the Stellwagen Bank National Marine sanctuary under two anthropogenic disturbance regimes." Thesis, Boston University, 2012. https://hdl.handle.net/2144/31516.

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Thesis (Ph.D.)--Boston University<br>PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.<br>A combination of overexploitation and destructive fishing practices, such as bottom trawling, have depleted native populations of groundfishes in coastal New England and reduced benthic community diversity. T

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3

Denda, Anneke [Verfasser], and Christian [Akademischer Betreuer] Möllmann. "Zooplankton dynamics, fish zonation and trophic interactions at two seamounts in contrasting regimes of the Eastern Atlantic / Anneke Denda. Betreuer: Christian Möllmann." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://d-nb.info/1093411341/34.

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4

Denda, Anneke Verfasser], and Christian [Akademischer Betreuer] [Möllmann. "Zooplankton dynamics, fish zonation and trophic interactions at two seamounts in contrasting regimes of the Eastern Atlantic / Anneke Denda. Betreuer: Christian Möllmann." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://nbn-resolving.de/urn:nbn:de:gbv:18-77592.

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5

Jaffri, Sarah. "Characterization of the photosynthetic apparatus of Chlorella BI sp., an Antarctica mat alga under varying trophic growth states." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1304348068.

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6

Kessouri, Fayçal. "Cycles biogéochimiques de la mer Méditerranée : processus et bilans." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30367/document.

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La Méditerranée est caractérisée par une grande variété de régimes trophiques qui s'explique par les apports fluviaux, les ratios azote/phosphore particulièrement élevés dans le bassin oriental, et par les processus hydrodynamiques en particulier le mélange vertical dans les régions situées au nord. Cette thèse qui s'inscrit dans le cadre du projet MerMEX, composante du chantier MISTRALS, a pour objectif l'étude des cycles biogéochimiques en Méditerranée. Elle s'appuie en particulier sur les observations acquises dans le cadre du projet DeWEx et sur la modélisation couplée physique biogéochimi

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7

Mukherji, Arnab. "Agrarian households in semi-arid tropics evaluating policy options /." Santa Monica, CA : RAND, 2007. http://www.rand.org/pubs/rgs_dissertations/RGSD216/.

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8

Marques, Ana Catarina Tormenta. "Estudo comparativo na produção de bovinos/sistemas produtivos em regiões tropicais." Master's thesis, ISA/UTL, 2012. http://hdl.handle.net/10400.5/5253.

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Mestrado em Engenharia Zootécnica - Produção Animal - Instituto Superior de Agronomia / Faculdade de Medicina Veterinária<br>Production of cattle is always a great alternative of potential value, in particular in Africa and Latin America continents, where the existing forage resources are very abundant. The aim of the present work was to discuss the production systems of beef cattle in tropical regions, notably in Mozambique and in the State of Maranhão - Brazil, making a diagnosis of the technological level of beef cattle production and the quality of life of the household producers in these

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9

D'Ortenzio, Fabrizio. "Space and time occurrence of algal blooms in the Mediterranean : their significance for the trophic regime of the basin." Thesis, Open University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402827.

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10

Khan, Nazma Habib. "Population diversity of `Leishmania tropica' in Northern Pakistan and its neighbouring regions." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.590621.

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11

Saharaoui, Lounes. "Les coccinelles algériennes (Coleoptera, Coccinellidae) : analyse faunistique et structure des communautés." Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30246/document.

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L'étude menée durant quatre années consécutives (2003-2007) a caractérisé écologiquement et faunistiquement le peuplement des coccinelles en Algérie. 48 espèces ont été répertoriées dont 46 sont des agents de lutte biologiques. Elles se répartissent dans huit sous-familles, 12 tribus et 23 genres. La richesse spécifique est très élevée dans les secteurs du nord d'Algérie. Cette zone est caractérisée par des bioclimats humide, sub-humide et semi aride regroupant 41 espèces. Elle est par contre très faible dans le secteur de l'Atlas saharien et le Sud algérien avec respectivement 12 et 16 espèce

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12

Niiranen, Susa. "Multiple forces drive the Baltic Sea food web dynamics and its response to environmental change." Doctoral thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-92541.

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Understanding the interaction of multiple drivers and their compounded effects on ecosystem dynamics is a key challenge for marine resource management. The Baltic Sea is one of the world’s seas most strongly impacted by effects from both human activities and climate. In the late 1980’s changes in climate in combination with intensive fishing initiated a reorganization of the Central Baltic Sea (CBS) food web resulting in the current sprat-dominated state. In the future, climate change is projected to cause drastic changes in hydrodynamic conditions of the world oceans in general, and the Balti

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13

Novoa, Goicochea Zaniel I. "Ecología y geografía de las regiones tropicales : la cuenca del Madre de Dios. De la franja pionera a la integración binacional." Pontificia Universidad Católica del Perú. Centro de Investigación en Geografía Aplicada, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/119812.

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La Cuenca del Madre de Dios, es una región que está plenamente inserta en el trópico húmedo y abarca una considerable superficie del oriente peruanoboliviano. Esta región con vastas áreas naturales, empieza a mostrar cambios fundamentales en la organización de su espacio. Su ocupación si bien se reconoce es desde muy antiguo, por parte de grupos etnicos; ha visto en el presente siglo, principalmente en las tres últimas décadas, el acontecer de diferentes fases en las relaciones del hombre con su medio. El estudio para el desarrollo integral de espacios definidos por cuencas hidrográficas multi

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14

Scott, Catherine Louise. "Calanoid copepods and ice fauna in Arctic fjords and regions of the marginal ice zone around Svalbard : lipids; stage distributions; trophic interactions and life strategies." Thesis, University of Stirling, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341210.

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15

Eklöf, Johan S. "Anthropogenic Disturbances and Shifts in Tropical Seagrass Ecosystems." Doctoral thesis, Stockholm University, Department of Systems Ecology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7285.

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<p>Seagrasses constitute the basis for diverse and productive ecosystems worldwide. In East Africa, they provide important ecosystem services (e.g. fisheries) but are potentially threatened by increasing resource use and lack of enforced management regulations. The major aim of this PhD thesis was to investigate effects of anthropogenic distur-bances, primarily seaweed farming and coastal fishery, in East African seagrass beds. Seaweed farming, often depicted as a sustainable form of aquaculture, had short- and long-term effects on seagrass growth and abundance that cascaded up through the foo

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16

Hancock, Christine [Verfasser], and Elisabeth [Akademischer Betreuer] Obermaier. "Influence of land use on Plantago lanceolata L. and its higher trophic levels at different spatial scales and in three geographic regions / Christine Hancock, geb. Herbst. Betreuer: Elisabeth Obermaier." Würzburg : Universitätsbibliothek der Universität Würzburg, 2012. http://d-nb.info/1028326319/34.

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17

Maluf, João Carlos Cattini. "Estudo dos metais traço (zinco, cádmio e chumbo) em duas regiões do complexo estuarino-lagunar de Cananéia-Iguape(SP) sob diferentes pressões antrópicas." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/21/21133/tde-02082011-111452/.

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Os setores sul e norte do complexo estuarino lagunar de Cananéia-Iguape, sujeitos a diferentes pressões antrópicas, foram estudados quanto às características hidrológicas e hidroquímicas das águas de superfície e fundo, com ênfase às concentrações de zinco, cádmio e chumbo dissolvidos. A amostragem contou com coletas espaciais e temporais, em dois períodos sazonais (outono e primavera) de 2007. Os metais estudados foram: o zinco, devido ação tóxica ou como micronutriente, dependendo de sua concentração, o cádmio e o chumbo, considerados sem função biológica positiva conhecida e com alto grau d

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18

Dubois, Mélodie. "Effets combinés de la pêche et des perturbations naturelles sur la dynamique des écosystèmes coralliens." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEP021.

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Les récifs coralliens fournissent des services écosystémiques critiques aux populations côtières qui en dépendent pour leur mode de vie et leur bien-être. Cependant, les écosystèmes coralliens sont soumis à une combinaison de perturbations naturelles et de facteurs de stress anthropiques de plus en plus importants. Ces pressions peuvent entraîner des changements abruptes et parfois irréversibles dans la structure et le fonctionnement des communautés et, donc, dans les services écosystémiques délivrés par ces écosystèmes. Comprendre la dynamique de ces changements de régime est fondamentale pou

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19

Österblom, Henrik. "Complexity and Change in a Simple Food Web : Studies in the Baltic Sea (FAO Area 27.IIId)." Doctoral thesis, Stockholm University, Department of Systems Ecology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-953.

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<p>An influence at one trophic level can result in dynamic impacts also on other components of a food web. These dynamics are known as trophic cascades, and can be both top-down and bottom-up. After a near-collapse of the Baltic cod <i>Gadus morhua</i> stock in the 1980s, its main prey sprat <i>Sprattus sprattus</i> increased dramatically. The main food of sprat, marine copepods, decreased during the same time period, likely a combined effect of increased predation pressure from sprat and decreasing salinities. This shortage of food for sprat resulted in decreasing quality of sprat as a food s

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20

Chaparro, Mendivelso Hooz Angela. "Impacts of climate and drought on tree radial growth in Neotropical dry forests: Scaling up from short to long time-scales = Impactos del clima y las sequías en el crecimiento radial de los árboles en los bosques secos Neotropicales: Evaluación de sus efectos a diferentes escalas temporales." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/402722.

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This thesis analyzed the dynamics of tree radial growth at different time-scales in relation to climate and drought in two tropical dry forests (TDFs) from Colombia (Tuluá) and Bolivia (INPA). The specific objectives were: (i) To assess intra-annual patterns of radial growth (radial- increment dynamics and xylogenesis) in ten coexisting tree species from Tuluá and INPA and determine their relationship with climate and leaf phenology. (ii) To analyze the effects of climate and drought on long-term radial growth at different time-scales using dendrochronology in seven coexisting deciduous tree

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21

Hancock, Christine [geb Herbst]. "Influence of land use on Plantago lanceolata L. and its higher trophic levels at different spatial scales and in three geographic regions." Doctoral thesis, 2012. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-73877.

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Heutzutage prägen landwirtschaftlich genutzte Flächen einen großen Teil der deutschen Landschaft. Die Umwandlung von natürlichen Lebensräumen zu bewirtschaftetem Grünland beeinflusst grundlegend die Vielfalt von Pflanzen und Tieren. Zwar erhöht die intensive Nutzung dieser Flächen die Produktivität der Pflanzen oder die Biomasse als Viehfutter auf den Wiesen. Wie diese Einflüsse auf die Artenvielfalt, Ökosysteme und trophische Interaktionen, im Laufe der Jahre wirken ist jedoch immer noch nicht vollständig verstanden. Um die Funktionen der Biodiversität in einer landwirtschaftlich genutzten Fl

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