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Dissertations / Theses on the topic 'Ecosystem engineer'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Wodika, Ben. "EFFECTS OF TIME, SEED SOURCE, AND PLANT COMPOSITION ON MACROINVERTEBRATES IN RESTORED PRAIRIE." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/dissertations/1088.

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Invertebrates influence primary productivity and nutrient cycling in ecosystems. They are also important links between producer and higher trophic levels. Despite their important role in terrestrial ecosystem function, invertebrates are frequently overlooked in ecological restorations. Thus, the objective of this research was to quantify how belowground macroinvertebrate ecosystem engineers and communities change over time following ecological restoration and examine whether the source of dominant plant species and the composition of non-dominant plant species influence aboveground macroinvert

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2

McCaffery, Magnus. "The influence of an ecosystem engineer on nutrient subsidies and fish invasions in Southwestern Montana." Diss., [Missoula, Mont.] : University of Montana, 2009. http://etd.lib.umt.edu/theses/available/etd-03102010-102211.

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Bush, Laura Elizabeth. "Stability and variability of the ecosystem engineer Sabellaria alveolata on differing temporal and spatial scales." Thesis, Bangor University, 2016. https://research.bangor.ac.uk/portal/en/theses/stability-and-variability-of-the-ecosystem-engineer-sabellaria-alveolata-on-differing-temporal-and-spatial-scales(1deae07d-a12b-4f61-9838-77e1a8bc9cca).html.

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Climate change is directly and indirectly impacting biota, A common prediction is that biogeographic ranges will extend poleward, with increases in abundance near the leading edge. Understanding how marine species will respond is hindered by a scarcity of long-term datasets. However, within the British Isles there is a long history of well-documented intertidal research. Historical data are stored in a variety of forms from grey-literature and national databases to published journals. Sabellaria alveolata is a conservationally important biogenic reef-forming species that reaches its northern r

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4

Hochhalter, Samuel J. "Patch-Scale Effects of an Invasive Ecosystem Engineer on the Structure and Function of a Eutrophic Stream." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/307.

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Recent theoretical and technological advances in ecosystem science have dramatically expanded the ways in which scientists can pursue and explore ecological questions. For my thesis research, I integrated the recent theoretical concept of organisms as ecosystem engineers with the relatively recent development of stable isotope tracer tests to ask the question: how does the invasive common carp affect stream ecosystem structure and function? To investigate the structuring role of carp, I measured autotroph seasonal distribution and abundance and macroinvertebrate seasonal abundance and diver

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Vitelli, Frederico. "Herbivory by Parma mccullochi (Pomacentridae) : its role as an ecosystem engineer in temperate algal-dominated reefs." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/583.

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Pomacentridae is one of the most representative families of herbivorous fishes inhabiting both tropical and temperate reefs, yet the vast majority of studies examining feeding within this family have been undertaken in tropical rather than temperate regions. Despite the high abundances of the pomacentrid Parma mccullochi in temperate waters of Western Australia, and their likely importance in removing algae from reefs in the region, there is a lack of information on their diet and their impact on the reef algal community. This study aims to determine the role of Parma mccullochi as an ecosyste

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James, Alexandra Iona Biological Earth &amp Environmental Sciences Faculty of Science UNSW. "Development of resource-rich patches by soil-disturbing animals in arid environments." Awarded by:University of New South Wales. Biological, Earth & Environmental Sciences, 2009. http://handle.unsw.edu.au/1959.4/44353.

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In arid landscapes limited resources are concentrated into fertile patches that allow greater productivity than would otherwise be expected. Fertile patches are created and maintained by processes that modify soil topography and interrupt the flow of resources across the landscape. These processes may be abiotic or biotic in origin. Species that modify, maintain or create habitat have been termed ecosystem engineers. One group of soil disturbing ecosystem engineers creates fertile patches by modifying soil microtopography through foraging for food and creating habitat. This thesis examines the

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Martin, Stephanie Ann, and Marietjie Landman. "The Aardvark as an ecological engineer in the Eastern Karoo: dig patterns and emergent processes." Thesis, Nelson Mandela Metropolitan University, 2017. http://hdl.handle.net/10948/11952.

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Species which play particularly important roles in ecosystem patterns and processes are recognised as keystone species or ecosystem engineers. The conservation of these species is critical for the maintenance of the ecological role they play in ecosystem function. The aardvark, Orycteropus afer, is known to play a role in biopedturbation through digging for refuges and for prey, and as a consequence of these digging activities is expected to serve the role of an ecosystem engineer and keystone species. This study aimed to describe and quantify the ecological patterns and processes driven by th

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Posthumus, Erin Elizabeth. "Do Red Squirrel Middens Promote Vertebrate Species Diversity?" Thesis, The University of Arizona, 2013. http://hdl.handle.net/10150/294022.

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The modifications animals make to their environments can be critical to species diversity. Red squirrels (Tamiasciurus hudsonicus) create large piles of conifer cone debris (middens) and are hypothesized to function as a keystone species due to positive associations between middens and other vertebrate species. We assessed vegetation and landscape structure at middens with a resident red squirrel for varying consistencies over the prior 5 years and surveyed mammals and birds at the community and population level. After accounting for vegetation and landscape characteristics, red squirrel-creat

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Njozela, Cuma. "The role of the sandprawn, Callichirus kraussi, as an ecosystem engineer in a temporarily open/closed Eastern Cape estuary, South Africa." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001539.

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The role of the sandprawn, Callichirus (=Callianassa) kraussi (Stebbing), as an ecosystem engineer was assessed in the lower reach of the temporarily open/closed Kasouga Estuary situated along the Eastern Cape coastline of southern Africa over the period April 2010 to June 2011. The study comprised two distinct components, a field study and a caging experiment. The field study assessed the correlation between sand prawn densities and selected physico-chemical (organic content of the sediment and bioturbation) and biological (microphytobenthic algal concentrations and macrobenthic abundance and

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Sancomb, Elizabeth J. "Direct and indirect effects of white-tailed deer (Odocoileus virginianus) herbivory on beetle and spider assemblages in Northern Wisconsin." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1408363956.

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Bancroft, Wesley J. "Environmental response to burrowing seabird colonies : a study in ecosystem engineering." University of Western Australia. School of Animal Biology, 2004. http://theses.library.uwa.edu.au/adt-WU2005.0064.

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[Truncated abstract] Ecosystem engineers are organisms that physically modify habitat in a manner that modulate resource flows and species within ecosystems. Ecosystem engineering is distinct from classical interactions (competition, predation, parasitism and mutualism) in that it does not involve direct trophic exchange between organisms. The term ‘ecosystem engineer’ is a recently adopted one, and we are just beginning to investigate the occurrence and impact of engineers in ecosystems. My thesis explores the ecosystem engineering actions of Wedge-tailed Shearwaters, Puffinus pacificus, in a

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Jones, Kevin Christopher. "Ecological effects of the feeding and construction activities of the Eurasian beaver (Castor fiber) in Scotland : implications for reintroduction." Thesis, University of Stirling, 2006. http://hdl.handle.net/1893/211.

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Beavers have been described as a “keystone species” and “ecosystem engineers”, and in this dual role have great potential to physically modify their environment through tree-felling, foraging and construction activities. The resultant change in habitat heterogeneity can affect the flora and fauna that share the habitat with them. There has been recent interest in reintroducing the Eurasian beaver to the United Kingdom after an absence of over 400 years. To date, no research (aside from this thesis) has focussed on beaver ecology and behaviour in Scotland. This study has investigated the ecolog

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Veras, Priscila de Cerqueira. "Papel do peixe Malacanthus Plumieri (Actinopterygii) na estrutura dos bancos de rodolitos do Arquipélago de Fernando de Noronha - Brasil." reponame:Repositório Institucional da UFABC, 2016.

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Orientador: Prof. Dr. Guilherme Henrique Pereira Filho<br>Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Evolução e Diversidade, 2016.<br>Engenheiros Ecossistemicos (EE) modulam a disponibilidade de recursos no ambiente. Este e o caso dos rodolitos (i.e. gnodulos de vida livreh compostos por mais de 50% de algas calcarias incrustantes que formam bancos em fundos inconsolidados) que promovem habitats para diversos organismos. Por outro lado, muitos desses organismos modulam condicoes para o crescimento de rodolitos. Esta interacao resulta na criacao de redes

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Jones, Auriane. "Effect of an engineer species on the diversity and functioning of benthic communities : the Sabellaria Alveolata reef habitat." Thesis, Brest, 2017. http://www.theses.fr/2017BRES0142/document.

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A travers le monde, les zones côtières abritent une grande diversité d’ingénieurs de l’écosystème accomplissant des fonctions clés comme le recyclage de la matière organique et des nutriments. Les habitats résultants de l’activité biologique de ces espèces sont exposés à de nombreuses perturbations comme la surpêche, le piétinement ou via l’aménagement des côtes. Dans ce contexte, il est urgent de comprendre le fonctionnement de ces habitats ingénieurés et comment ils sont affectés par des perturbations croissantes. Pendant ma thèse, j’ai utilisé l’habitat récifal construit par le polychète gr

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Guerin, Natalia. "Impacto da invasão e mecanismos de regeneração natural do cerradão em áreas ocupadas por Pteridium arachnoideum (kaulf.) Maxon (Dennstaedtiaceae) no sudoeste do Estado de São Paulo." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-06052010-084435/.

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As samambaias do gênero Pteridium caracterizam-se pelas largas frondes e por um sistema de rizomas subterrâneos que possibilita sua rápida expansão. Apresentam elevada produção de biomassa ao longo do ano, que aumenta a incidência de incêndios, e ainda liberam substâncias químicas consideradas alelopáticas. Atualmente, são conhecidas como plantas-problema, pois vêm se expandindo e ocupando grandes áreas em diversas partes do mundo, causando impacto econômico e ecológico. Nesse contexto, este estudo teve por objetivo geral a compreensão do impacto da invasão por Pteridium arachnoideum sobre a v

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DeVanna, Kristen M. "Spatial Correlation and Facilitation Between Dreissena and Hexagenia: Possible Food-Web Disruption?" University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1320935549.

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Queiros, Ana Filipa de Moura. "Ecosystem engineers in diversity and process relationships." Thesis, Bangor University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.528333.

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Blanc, Lori A. "Experimental study of an avian cavity-nesting community: nest webs, nesting ecology, and interspecific interactions." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/28420.

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Cavity-nesting communities are structured by the creation of and competition for cavities as nest-sites. Viewing these communities as interconnected webs can help identify species interactions that influence community structure. This study examines cavity-nesting bird community interactions within the fire-maintained longleaf pine (Pinus palustris) ecosystem at Eglin Air Force Base, Florida. In chapter 1, I provide a background review of the ecology of my study system. In chapter 2, I use nest webs to depict the flow of cavity-creation and use at Eglin. I identified 2 webs into which most

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Hamani, Vincent. "Vers une meilleure compréhension des écosystèmes portuaires : interactions entre les organismes filtreurs et leur environnement." Thesis, La Rochelle, 2022. http://www.theses.fr/2022LAROS013.

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L’hyper-anthropisation, en particulier le long de nos côtes, a profondément modifié l’environnement. De plus en plus de structures, telles que les ports, forment des écosystèmes à part entière. Parmi la multitude d’espèces qui peuplent le port, un groupe semble particulièrement intéressant à étudier : les Filtreurs (bivalve set tuniciers). Ces organismes, par leurs modes de vie, ont une forte interaction avec l’environnement portuaire. En effet, en restant fixés sur les structures, ils subissent sans cesse les facteurs environnementaux qui caractérisent le port et leur mode d’alimentation, la

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Ward, Jessica MacKay. "Community-level effects of nonindigenous aquatic ecosystem engineers." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:8881/R/?func=dbin-jump-full&object_id=92244.

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Catano, Christopher. "Species and habitat interactions of the gopher tortoise: A keystone species?" Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5153.

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Species-species and species-habitat interactions have been demonstrated to be important in influencing diversity across a variety of ecosystems. Despite generalities in the importance of these interactions, appropriate mechanisms to explain them are absent in many systems. In sandhill systems of the southeast U.S., gopher tortoises have been hypothesized to be a crucial species in the maintenance of diversity and function. However, the mechanisms and magnitude in which they influence their communities and habitats have rarely been empirically quantified. I examined how habitat structure influe

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De, almeida Tania. "Impact d’une espèce ingénieure de l’écosystème et son utilisation en restauration écologique : Le cas de Messor barbarus (L.) dans les pelouses méditerranéennes Above- and below-ground effects of an ecosystem engineer ant in Mediterranean dry grasslands Harvester ants as ecological engineers for Mediterranean grassland restoration: impacts on soil and vegetation A trait-based approach to promote ants in restoration ecology." Thesis, Avignon, 2020. http://www.theses.fr/2020AVIG0358.

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L’objectif principal de cette thèse était double : (i) mesurer l’impact d’une espèce de fourmi sur son écosystème, afin (ii) d’en déduire des applications potentielles dans le domaine de la restauration écologique.Les fourmis sont parmi les organismes les plus abondants des écosystèmes terrestres et occupent des zones géographiques très variées. Elles jouent des rôles écologiques clés dans de nombreux écosystèmes comme ingénieurs du sol, prédateurs ou régulateurs de la croissance et de la reproduction des plantes. Cependant les données collectées localement sont souvent parcellaires et ne perm

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Hortobágyi, Borbála. "Multi-scale interactions between riparian vegetation and hydrogeomorphic processes (the lower Allier River)." Thesis, Université Clermont Auvergne‎ (2017-2020), 2018. http://www.theses.fr/2018CLFAL001/document.

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Dans les écosystèmes, tels que les rivières, les marais salés, les mangroves, les dunes côtières, qui sont exposés à des flux hydrogéomorphologiques fréquents et réguliers (c’est-à-dire à des perturbations physiques), des rétroactions se mettent en place entre la géomorphologie (eau, sédiments et formes fluviales) et les plantes (par exemple Populus nigra L., Salix alba L., Salix purpurea L. dans les rivières). L’établissement de la végétation est contrôlé par des processus hydrogéomorphologiques qui, en retour, sont modulés par la végétation. De telles rétroactions contrôlent la dynamique des

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Brown, Joseph K. "Emergent interactions influence functional traits and success of dune building ecosystem engineers." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4111.

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Stability of coastal systems are threatened by oceanic and atmospheric drivers of climate change. Sea-level rise compounded with increased frequency and intensity of storms emphasizes need for protection of inner island systems by dune formations. Dune building processes are affected by interactions between growth of ecosystem engineering dune grasses and environmental factors associated with disturbance such as sand burial and salt spray. Climate change may also cause latitudinal expansion of some species, resulting in emergence of competitive interactions that were previously absent. Topogra

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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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Mitchell, Mark E. "Nutrient Cycling Dynamics and Succession in Green Roof Ecosystems." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin150487303109878.

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Parrott, Lael. "Learning to engineer life, development of a generally configurable model for the simulation of artificial ecosystems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq64489.pdf.

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Beltrand, Maeva Mereana Marion. "The effects of the macroalga Gracilaria gracilis and increasing temperatures on the performance of the endemic Cape eelgrass Zostera capensis." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/27537.

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Rising temperature caused by global warming alters physiology, phenology and/or distribution in a wide array of plant and animal species, which has dramatic knock-on effects at different levels of organisation. This study investigates the individual and interactive effects of temperature (18ᵒC, 22ᵒC and 30ᵒC) and additions of the macroalga Gracilaria gracilis (high and low) on the performance of the seagrass Zostera capensis, which occurs in Langebaan Lagoon, South Africa over a seven-week period. Results from the laboratory experiment revealed that G. gracilis did not significantly affect the

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Speed, James D. M. "Ecosystem engineers of the tundra the impacts and extent of goose herbivory in the high Arctic /." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=26470.

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DeVanna, Kristen M. "Role of Dreissena as ecosystem engineers : effects to native bioturbators and benthic community structure and function /." Connect to Online Resource-OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1165420236.

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Thesis (M.S.)--University of Toledo, 2006.<br>Typescript. "Submitted as partial fulfillment of the requirements for The Master of Science Degree in Biology (Ecology-track)." Bibliography: leaves 26-34.

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Sanabria-Blandon, Maria Catalina. "Effects of agricultural Landscape of the Colombian Llanos on Ecosystem Services and assemblages of soil engineers." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066025/document.

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Les savanes tropicales sont très importantes pour la production agricole et de nombreux services écosystémiques. En Colombie, ces savanes ont été traditionnellement gérées par l'élevage extensif et l'agriculture à faible intrants. La conversion actuelle de ces systèmes naturels en agriculture intensive peut avoir des effets dévastateurs sur la biodiversité du sol et au-dessus du sol. La macrofaune du sol représente une part importante de la biodiversité des agroécosystèmes et certains groupes ont reçu une attention considérable en tant qu'ingénieurs des écosystèmes. L'objectif général de la th

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Whittington-Jones, Gareth Morgan. "The role of aardvarks (Orycteropus afer) as ecosystem engineers in arid and semi-arid landscapes of South Africa." Thesis, Rhodes University, 2007. http://hdl.handle.net/10962/d1005445.

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Arid and semi arid environments are characterised by extreme fluctuations in temperature and low rainfall which present significant challenges to the animals inhabiting these areas. Mammals, such as aardvarks (Orycteropus afer, Pallas 1766), excavate burrows in order to avoid predators and climatic extremes and are termed “ecosystem engineers” as they physically modify their environment and in doing so create new habitats and alter the availability of resources to other species. In this study I assessed the microhabitat conditions (maximum and minimum temperature, relative humidity and seed ab

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Holland, Michael. "An Assessment of the U.S. Army Corps of Engineers' Environmental Plan Evaluation Methods." ScholarWorks@UNO, 2011. http://scholarworks.uno.edu/td/124.

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The U.S. Army Corps of Engineers is a federal agency with a mission to develop water resource projects to benefit the nation. Some of its large scale projects have been built to benefit cities, but through unintended consequences have caused economic and environmental damages. For example, its control of Mississippi River flooding has protected the City of New Orleans, but contributed to land loss in coastal Louisiana, and by some accounts, made the population more susceptible to hurricane damage. The agency has now embarked on a mission to restore some of the damaged environmental areas. This

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Kavanagh, Lydia Jane. "An engineered ecosystem for environmentally sustainable wastewater treatment for remote tourist resorts in tropical/sub-tropical regions /." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16958.pdf.

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Perfect, Charles. "From engineered channel to functioning stream ecosystem : rates, patterns and mechanisms of development in a realigned river channel." Thesis, University of Stirling, 2010. http://hdl.handle.net/1893/2431.

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1. Realigning rivers is becoming common as a solution to conflicting needs of land development and ecosystem preservation. Although an increasing number of projects are monitored, exactly how these channels develop as functional stream ecosystems is still poorly understood. Mining in the upper catchment of the River Nith (Scotland) required the realignment of 3km (approx.) of river. The engineered channel was designed around sound geomorphological principles of sediment transport and supply with a sinuous planform and pool-riffle sequences along the installed gravel-bed. 2. A comprehensive sur

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True, Aaron Conway. "Ecological engines: Finescale hydrodynamic and chemical cues, zooplankton behavior, and implications for nearshore marine ecosystems." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54019.

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Ephemeral patches of hydrodynamic and chemical sensory cues at fine scales are fundamentally important to the life success of plankton populations and thus the overall health and vitality of nearshore marine ecosystems. We employed various tools from experimental fluid mechanics to create ecologically-relevant hydrodynamic and chemical conditions in a recirculating flume system for zooplankton behavioral assays. The goal was to quantify and correlate changes in zooplankton behavior with coincident sensory cues. A laminar, planar free jet (the Bickley jet) was used to create finescale, free she

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Sandom, Christopher. "Wild boar, wolves and fences : managing ecosystem engineers and keystone species to restore ecological processes, a case study in the Scottish Highlands." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542969.

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Eriksson, Bert. "The zoo-geomorphological impact of fossorial rodents in sub-polar alpine environments." Licentiate thesis, Uppsala universitet, Kulturgeografiska institutionen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-150807.

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The geomorphological impact of small fossorial mammals (adapted to digging and living underground), such as rodents can be significant, and both their direct and indirect effects may contribute to landscape formation. This thesis is based on empirical field studies of two burrowing rodent species in sub-polar environments, namely invasive House mice (Mus musculus) on sub-Antarctic Marion Island and Norwegian lemmings (Lemmus lemmus) in sub-Arctic Abisko. The spatial distribution, sediment displacements, impact on vegetation and microclimatic effects of the rodents are documented. Invasive mice

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Oliveira, Marina Vasconcelos de. "Efeitos dos ninhos de Atta sexdens (Linnaeus, 1758) (Hymenoptera: Formicidae) sobre a estrutura da comunidade de artr?podes do solo na Mata Atl?ntica." Universidade Federal Rural do Rio de Janeiro, 2017. https://tede.ufrrj.br/jspui/handle/jspui/1925.

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Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-07-27T13:09:11Z No. of bitstreams: 1 2017 - Marina Vasconcelos de Oliveira.pdf: 1221503 bytes, checksum: 9381f92942c7388888364c8566c8a781 (MD5)<br>Made available in DSpace on 2017-07-27T13:09:11Z (GMT). No. of bitstreams: 1 2017 - Marina Vasconcelos de Oliveira.pdf: 1221503 bytes, checksum: 9381f92942c7388888364c8566c8a781 (MD5) Previous issue date: 2017-02-13<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES<br>Tropical forests support a great vegetal diversity, in part, through an nutrient cycling initiated

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Heuner, Maike [Verfasser], Birgit [Akademischer Betreuer] Kleinschmit, Boris [Akademischer Betreuer] Schröder-Esselbach, Stijn [Akademischer Betreuer] Temmerman, and Reinhard [Gutachter] Hinkelmann. "Key ecosystem engineers in estuarine vegetation : their niches, traits, and services for coping with hydrodynamic stress / Maike Heuner ; Gutachter: Reinhard Hinkelmann ; Birgit Kleinschmit, Boris Schröder-Esselbach, Stijn Temmerman." Berlin : Technische Universität Berlin, 2016. http://d-nb.info/1156270472/34.

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Vieira, Camila. "Engenheiros dos ecossistemas em plantas : modificações arquiteturais de folhas por largatas de Lepidoptera influenciam a estrutura de comunidades de artrópodes /." São José do Rio Preto : [s.n.], 2010. http://hdl.handle.net/11449/87623.

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Orientador: Gustavo Quevedo Romero<br>Banca: Martin Francisco Pareja<br>Banca: Thiago Junqueira Izzo<br>Resumo: Engenharia dos ecossistemas é um processo em que organismos modificam a distribuição de recursos (i.e, disponibilizando novos habitats) para outras espécies via interação não trófica. Lagartas de Lepidoptera enroladoras de folhas podem atuar como engenheiros dos ecossistemas florestais, uma vez que são capazes de modular interações entre comunidade artrópode - planta fornecendo aos colonizadores secundários diversos tipos de benefícios. Essas lagartas quando engenheiras influenciam o

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Vieira, Camila [UNESP]. "Engenheiros dos ecossistemas em plantas: modificações arquiteturais de folhas por largatas de Lepidoptera influenciam a estrutura de comunidades de artrópodes." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/87623.

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Made available in DSpace on 2014-06-11T19:22:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-03-26Bitstream added on 2014-06-13T19:28:31Z : No. of bitstreams: 1 vieira_c_me_sjrp.pdf: 516040 bytes, checksum: 821016a30a1a01c83f46226e00f63cb0 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Engenharia dos ecossistemas é um processo em que organismos modificam a distribuição de recursos (i.e, disponibilizando novos habitats) para outras espécies via interação não trófica. Lagartas de Lepidoptera enroladoras de folhas podem atuar como engenheiros dos ecossistema

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Holbrook, David Lee. "Corbicula fluminea Invasion as a Secondary Effect of Hydrilla verticillata Management via Triploid Grass Carp (Ctenopharyngodon idella)." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062823/.

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A study of Asian clam (Corbicula fluminea Müller) colonization in relation to changes in aquatic vegetation community as a result of management of Hydrilla verticillata (L. f.) Royle with grass carp was conducted at the Lewisville Aquatic Ecosystem Research Facility (LAERF), Lewisville, TX, from April 2015 through October 2016. Percent vegetation cover, C. fluminea abundance and water quality metrics (pH, turbidity, conductivity, DO, calcium, chlorophyll a) from 16 experimental subjects were analyzed. Treatments included four replicated grass carp stocking densities; 1-control with no fish sto

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Engvall, Cecilia. "A first classification of zoogeomorphological activity and impacts by large mammals in national parks, South Africa." Thesis, Uppsala universitet, Kulturgeografiska institutionen, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-194811.

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Pfeiffer, Birgit Verfasser], Rolf [Akademischer Betreuer] [Daniel, Michael [Akademischer Betreuer] Hoppert, et al. "Impact of plant species, N fertilization and ecosystem engineers on the structure and function of soil microbial communities / Birgit Pfeiffer. Gutachter: Michael Hoppert ; Hermann Jungkunst ; Stefanie Pöggeler ; Stefan Pd. Irniger ; Kai Jun.- Heimel. Betreuer: Rolf Daniel." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2014. http://d-nb.info/1047932199/34.

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Dahlsjö, Cecilia A. L. "Termite assemblage structure and function : a study of the importance of termites in lowland equatorial forests." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:28a37283-4013-4c5a-be2e-aac26d97f838.

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Termites are important ecosystem engineers in tropical and sub-tropical terrestrial regions where they influence ecosystem processes by altering the physical and chemical structure of the habitat. Termites affect nutrient availability by decomposition and comminution (shredding) of organic matter and act as agents of bioturbation as they re-work substrates during the construction of nests, tunnels and runways. At present we have a relatively good understanding of termite diversity patterns in the tropics through the extensive use of the standardised transect sampling protocol by Eggleton et al

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Roman, Alexander Cesar Ferreira. "Rela??es ecologicas entre caranguejos e composi??o arb?rea em bosques de mangue naturais e restaurados no nordeste brasileiro." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14045.

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Made available in DSpace on 2014-12-17T14:33:09Z (GMT). No. of bitstreams: 1 AlexanderCFR_TESE.pdf: 2277990 bytes, checksum: fde046b8c7771a53154cf0f53839f90c (MD5) Previous issue date: 2014-07-08<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>This study aimed to compare the development of crab and tree communities of two restored mangrove areas, one planted with Rhizophora mangle and the other naturally recovered, and also to compare the predation of Grapsid crab Goniopsis cruentata and the Ocypodid Ucides cordatus over the propagules of three mangrove trees: Rhizophora ma

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Silva, Rodrigo Pires da. "The The sun coral as an ecosystem engineer." Master's thesis, 2018. http://hdl.handle.net/10451/36493.

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Tese de mestrado, Ecologia Marinha, Universidade de Lisboa, Faculdade de Ciências, 2018<br>As invasões biológicas são uma das maiores ameaças à biodiversidade e aos ecossistemas marinhos nos dias de hoje. A introdução de espécies não-indígenas começou a ser comum no início do século XX devido ao grande aumento do tráfego marítimo decorrente da globalização. Regra-geral, a introdução de novas espécies não é propositada. Grande parte dos indivíduos pioneiros são transportados em águas de lastro ou viajam encrustados em navios transoceânicos. Os indivíduos transportados para fora da sua zona orig

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"Ecosystem Consequences Of Genetic Variation In The Salt Marsh Engineer Spartina Alterniflora." Tulane University, 2015.

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Ecosystem engineers can govern ecosystem dynamics, yet ecosystem consequences of trait variation within engineering species are often overlooked. Combining field and greenhouse experiments with mathematical modelling, this study aimed to assess the relative importance of heritable and non-heritable trait variation within the engineer species Spartina alterniflora in controlling salt marsh erosion. In the field experiment, plots along a devegetated shoreline were restored with wild and cultivated sources to test whether populations exerted different control on erosion. The greenhouse experiment

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Verstege, Jacqueline. "Fox and lemming responses to climate and snow conditions at the Arctic’s edge." 2017. http://hdl.handle.net/1993/31976.

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Low species diversity in the Arctic promotes strong food-web linkages, as changes in abundance of one species may influence many others. Using harvest records, I determined Arctic fox populations are declining in their southern distributional range due to shallower snow potentially limiting density of lemmings, their primary prey, which live and breed beneath snow. Additionally, warm fall and spring temperatures are shortening access to alternative prey, seals on sea ice. Arctic foxes also influence other species through non-trophic interactions, as lemming winter nests were found on 70% of f

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