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Dissertations / Theses on the topic 'Pollinator-Plant interaction'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

CaraDonna, Paul J., William K. Petry, Ross M. Brennan, et al. "Interaction rewiring and the rapid turnover of plant-pollinator networks." WILEY-BLACKWELL, 2017. http://hdl.handle.net/10150/623072.

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Whether species interactions are static or change over time has wide-reaching ecological and evolutionary consequences. However, species interaction networks are typically constructed from temporally aggregated interaction data, thereby implicitly assuming that interactions are fixed. This approach has advanced our understanding of communities, but it obscures the timescale at which interactions form (or dissolve) and the drivers and consequences of such dynamics. We address this knowledge gap by quantifying the within-season turnover of plant-pollinator interactions from weekly censuses acros

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2

Fründ, Jochen [Verfasser], Teja [Akademischer Betreuer] Tscharntke, and Stefan [Akademischer Betreuer] Vidal. "Pollinator biodiversity, functional complementarity and dynamic plant-pollinator interaction networks / Jochen Fründ. Gutachter: Teja Tscharntke ; Stefan Vidal. Betreuer: Teja Tscharntke." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/104302851X/34.

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3

Antonsen, Adrienne Kendra. "Spatiotemporal Dynamics of Butterflies and Their Floral Resources." Thesis, North Dakota State University, 2020. https://hdl.handle.net/10365/31830.

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Butterflies fulfill a unique role among insect pollinators as long-distance flyers. This makes butterflies particularly valuable as vectors of genetic diversity among spatially isolated plant populations. Like many insects, though, butterfly populations have experienced significant declines in recent years. To help inform conservation efforts, and to investigate community and species level dynamics, I studied butterflies and their floral resources as part of a three year pollinator survey across the state of North Dakota. At the community level, I analyzed butterfly-flower interaction networks

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4

Hernández, Castellano Carlos. "Drivers of variability in plant-pollinator and host-parasitoid communities: effects on interaction network structure and ecosystem function." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/670558.

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Resums pendents<br>Les comunitats ecològiques són entitats dinàmiques l’estructura i composició de les quals està conformada per processos ecològics i per variabilitat ambiental. Degut a que les espècies interaccionen entre elles, els canvis en l’estructura i la composició de les comunitats poden alterar les xarxes d’interacció i el funcionament dels ecosistemes. En aquesta tesi estudio com un procés ecològic (la colonització d’un hàbitat per una nova espècie) i un component important de la variabilitat espacial (la grandària de l’hàbitat) afecta a les comunitats de pol·linitzadors, d’abelles

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5

Lybbert, Andrew H. "Temporal Dynamics of Seeded, Native Adventive, and Non-Native Vegetation in Plant-Pollinator Interaction Networks on Reclaimed Mines." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595512084426782.

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6

Wong, Sato Akira Armando. "Diverse adaptations to increase pollination success in zoophilous plants." Kyoto University, 2018. http://hdl.handle.net/2433/232377.

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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21176号<br>人博第848号<br>新制||人||203(附属図書館)<br>29||人博||848(吉田南総合図書館)<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)教授加藤眞, 教授市岡孝朗, 教授瀬戸口浩彰<br>学位規則第4条第1項該当

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7

Hachuy, Filho Leandro. "Exotic grass invasion alters the structure and functioning of plant-bee interactions in a Neotropical grassland ecosystem." Botucatu, 2019. http://hdl.handle.net/11449/181940.

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Orientador: Felipe Wanderley Amorim<br>Resumo: As mudanças globais mediadas pela ação antrópica estão alterando a biodiversidade e os ecossistemas em um ritmo acelerado. Um dos principais impulsionadores dessas mudanças é a introdução de espécies exóticas em ecossistemas nativos. Entre os grupos de organismos afetados por este processo, o das plantas é reconhecido um dos mais preocupantes, uma vez que a produção primária limita o tamanho e a composição das comunidades e participa através de efeitos em cascata em interações multi-tróficas. Uma das principais relações ecológicas influenciada por

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8

Ines, Maria Carolina Checchia da. "Fenologia e Sucesso Reprodutivo de Psychotria suterella (Rubiaceae): efeitos da disponibilidade de recursos e densidade floral." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-15082007-150943/.

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Várias podem ser as causas da variação local no sucesso reprodutivo de espécies vegetais, sendo a disponibilidade de recursos abióticos, herbivoria, polinização e dispersão de sementes comumente consideradas. Em espécies distílicas, a variação na disponibilidade de recursos abióticos pode determinar diferenças na quantidade e no período de produção das estruturas reprodutivas, e estas por sua vez podem influenciar a interação planta polinizador, modulando o comportamento de forrageio de visitantes florais. Este trabalho teve como objetivos verificar como alguns fatores poderiam determinar vari

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9

Forup, Mikael Lytzau. "The restoration of plant pollinator interactions." Thesis, University of Bristol, 2003. http://hdl.handle.net/1983/f77be7e4-2baa-4d8e-8ffb-e261541923c5.

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10

Ruiz-Guajardo, Juan Carlos. "Community plant-pollinator interactions in a Kenyan savannah." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/3133.

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Previous work has demonstrated that coflowering plant species (those that flower simultaneously in the same place) can potentially compete for pollination services. Competition for pollination among plant species can negatively impact their reproductive success. To minimise competition, plants can partition the activity of shared pollinators through releasing their floral resources at different times. Resource partitioning has been studied in several individual plant species, and some guilds of plants (e.g. African acacias), but little is known about temporal changes in resources at a communit

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11

Wilson, Ashley A. "SENSORY STRESSORS IMPACT SPECIES RESPONSES ACROSS LOCAL AND CONTINENTAL SCALES." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2224.

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Pervasive growth in industrialization and advances in technology now exposes much of the world to anthropogenic night light and noise (ANLN), which pose a global environmental challenge in terrestrial environments. An estimated one-tenth of the planet’s land area experiences artificial light at night — and that rises to 23% if skyglow is included. Moreover, anthropogenic noise is associated with urban development and transportation networks, as the ecological impact of roads alone is estimated to affect one-fifth of the total land cover of the United States and is increasing in space and inten

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12

Bergsdorf, Thomas. "Forest fragmentation and plant pollinator interactions in Western Kenya." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=980756294.

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13

Primante, Clara. "The role of floral traits in structuring plant-pollinator interactions." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/310210.

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Les interaccions planta-pol·linitzador són un component essencial de la biodiversitat i la funció ecològica dels ecosistemes terrestres. Un dels principals objectius de l'ecologia de la pol·linització és descriure aquestes interaccions i comprendre els factors subjacents a la seva estructura. En aquesta tesi doctoral es presenten els resultats dels estudis duts a terme durant tres anys en una comunitat mediterrània de plantes i els seus insectes pol·linitzadors al parc natural del Garraf (NE Espanya). En el capítol 1 es van registrar les interaccions planta-pol·linitzador i es van mesurar dife

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14

Mallet, Bertrand. "Rôle des facteurs écologiques dans le processus de spéciation en milieu insulaire. Effet de l'habitat et des pollinisateurs sur la diversification du faham (Jumellea spp., Orchidaceae) aux Mascareignes." Thesis, La Réunion, 2014. http://www.theses.fr/2014LARE0020/document.

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Les mécanismes à l'origine de la mise en place de l'isolement reproducteur sont relativement peu étudiés dans les radiations adaptatives insulaires. Selon la théorie de la spéciation écologique, l'isolement reproducteur résulte de la sélection divergente agissant sur des populations écologiquement différentes. Par leurs caractéristiques uniques, les îles océaniques constituent des systèmes idéals pour étudier le rôle des facteurs écologiques dans la diversification des lignées endémiques. Le rôle de l'habitat et des pollinisateurs dans la restriction des flux géniques inter et intraspécifique

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15

CaraDonna, Paul James, and Paul James CaraDonna. "Temporal Ecology of a Subalpine Ecosystem: Plant Communities, Plant-Pollinator Interactions, and Climate Change." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/620860.

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Ecological systems are inherently dynamic, and a primary way in which they are dynamic is through time. Individual organisms, populations, communities, species interactions, and ecosystem functions all follow a temporal progression from the past, to the present, and into the future. This temporal progression can occur over the course of minutes, hours, days, weeks, months, years, decades, or various other timescales. In this sense, temporal dynamics are an intrinsic property of all biological systems. In fact, one of the most prominent signals of recent global climate change is the significant

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16

Lepers, Clotilde. "Pollinators : demanding partners : Investigating the interplay between plant-pollinator interactions and plant traits evolution." Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10188/document.

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La grande majorité des plantes à fleurs se reproduisent grâce à leurs pollinisateurs. L’évolution chez les plantes est pourtant souvent étudiée sans prendre en compte ces interactions, et cette thèse vise à mieux comprendre leur impact sur l’évolution des plantes. Dans un premier chapitre, je présenterai les effets connus des pollinisateurs sur le taux d’autofécondation des plantes et sur son évolution. Dans un second chapitre, j’ai modélisé l’évolution du taux d’autofécondation des plantes lorsque celui-ci affecte la démographie des plantes et des pollinisateurs, et l’investissement des plant

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17

Henson, Katherine Sarah Elaine. "The restoration of ecological interactions : considering plant-pollinator, host-parasite and alien-alien interactions." Thesis, University of Bristol, 2007. http://hdl.handle.net/1983/a49626c2-783c-460b-addd-d124175070b1.

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18

Charlton, Nicholas L. "Investigating bumble bee foraging behaviour and the implications for plant-pollinator interactions." Thesis, University of Bristol, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618751.

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Bumble bees are important pollinators of both crops and wildflowers and t heir foraging behaviour greatly affects pollination interactions. The ability to predict these interactions can be improved by understanding the factors influencing bumble bee foraging choices. One method that has been applied to bumble bee foraging with some success is the use of optimal foraging theory to predict and understand foraging choices. This study has used optimal foraging theory in an attempt to explore a number of key assumptions and factors related to bumble bee foraging: whether net rate or efficiency maxi

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19

Bogo, Gherardo <1985&gt. "Exploring Plant-Pollinator interactions: critical studies for the safeguard of wild Apoidea and spontaneous plant populations." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7562/1/bogo_gherardo_tesi.pdf.

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The study of plant-pollinator relationship and the degree of their specialization is among the most lively and debated issues in plant biology and ecology. The fates of plants and bee pollinators are strictly connected: the severe decline lately encountered by wild Apoidea, which in turn results in a lower pollination rate, trigger the so-called “extinction vortex” phenomenon. This study was finalized to improve knowledge on plant-pollinator interactions, in ecological context with conservation needs. Field work on the natural populations of Dictamnus albus allowed us to define practical metho

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20

Dubuisson, Candice. "Impact de la pollution atmosphérique par l’ozone sur la communication chimique plante-pollinisateur : le cas de deux interactions emblématiques en Méditerranée." Thesis, Université de Montpellier (2022-….), 2022. http://www.theses.fr/2022UMONG001.

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Parmi les polluants présents dans la troposphère, l’ozone (O3) est probablement l’un des plus stressant pour les organismes, du fait de son fort potentiel oxydant. Par exemple, de fortes concentrations d’O3 ([O3]) peuvent affecter l’émission des composés organiques volatils (COVs) permettant aux plantes de communiquer avec leur environnement. De plus, l’O3 peut réagir avec ces COVs dans l’atmosphère pour créer de nouvelles molécules, modifiant ainsi le signal chimique émis par les plantes. Or, ce signal est déterminant dans les interactions plantes-insectes. De nombreuses études ont montré les

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21

Ferreira, Mariana Moreira. "Biodiversity and plant-pollinator interactions in native forest areas of Terceira Island (Azores)." Master's thesis, Universidade de Évora, 2018. http://hdl.handle.net/10174/23061.

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Neste trabalho avaliámos o impacto que a perturbação humana das comunidades da floresta nativa da ilha Terceira (Açores) tem sobre a riqueza específica e nas interações ecológicas entre plantas e polinizadores. Para o efeito selecionámos dois locais emparelhados (um bem conservado e outro degradado), em duas áreas de estudo (Lomba e Pico Galhardo) e analisámos a integridade das redes ecológicas planta-polinizador. Constatámos que nas áreas bem conservadas as interações são dominadas por espécies nativas, enquanto que nas áreas perturbadas, apesar da prevalência de plantas introduzidas, os poli

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22

Tur, Espinosa Cristina. "Plant-pollinator networks: incorporating individual variation and functional information." Doctoral thesis, Universitat de les Illes Balears, 2015. http://hdl.handle.net/10803/365035.

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Les xarxes complexes serveixen als ec olegs per a estudiar les interaccions de pollinitzaci o a nivell comunitari. Actualment, es necessari construir xarxes que siguin representacions m es realistes del proc es de pol.linitzaci o per tal d'incrementar la seva utilitat pr actica. Per aix o, aquesta tesi es centra en incorporar a les xarxes la variaci o interindividual i informaci o sobre la magnitud i el signe (positiu, neutre o negatiu) dels efectes de les interaccions sobre la reproducci o de les plantes. Les esp ecies consten de poblacions d'individus amb fenotips, genotips i comport

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23

Reverté, Saiz Sara. "Spatial variation in plant-pollinator relationships: consequences on pollination function." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/669527.

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Els patrons de variabilitat espacial en comunitats naturals han sigut habitualment estudiats en escales espacials grans, comparant hàbitats, on la distribució d’espècies està bàsicament relacionada amb factors ambientals. Tot i això, dintre un hàbitat és possible trobar variabilitat espacial a petita escala. La variació en la ocurrència i l’abundància de les espècies al llarg de l’espai afectarà l’estructura de les interaccions ja que diferents espècies varien en les seves característiques i amb el nombre i identitat de les espècies amb qui poden interactuar. La variabilitat espacial en les co

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24

Kornbluh, Andrea G. "The effect of population density and distribution on pollinator visits and fruit production in a self-incompatible herb, Apocynum cannabinum (Apocynaceae)." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1574358774644695.

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Wolanin, Theresa N. "DECOUPLING OF NEOTROPICAL SEASONALLY DRY TROPICAL FOREST PLANT-POLLINATOR INTERACTIONS IN THE MIDST OF CLIMATE CHANGE." Kent State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=kent1627410105877643.

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26

Davila, Yvonne Caroline. "Pollination ecology of Trachymene incisa (Apiaceae): Understanding generalised plant-pollinator systems." Thesis, The University of Sydney, 2006. http://hdl.handle.net/2123/1896.

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A renewed focus on generalised pollinator systems has inspired a conceptual framework which highlights that spatial and temporal interactions among plants and their assemblage of pollinators can vary across the individual, population, regional and species levels. Pollination is clearly a dynamic interaction, varying in the number and interdependence of participants and the strength of the outcome of the interaction. Therefore, the role of variation in pollination is fundamental for understanding ecological dynamics of plant populations and is a major factor in the evolution and maintenance of

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Davila, Yvonne Caroline. "Pollination ecology of Trachymene incisa (Apiaceae): Understanding generalised plant-pollinator systems." University of Sydney, 2006. http://hdl.handle.net/2123/1896.

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Doctor of Philosophy (PhD)<br>A renewed focus on generalised pollinator systems has inspired a conceptual framework which highlights that spatial and temporal interactions among plants and their assemblage of pollinators can vary across the individual, population, regional and species levels. Pollination is clearly a dynamic interaction, varying in the number and interdependence of participants and the strength of the outcome of the interaction. Therefore, the role of variation in pollination is fundamental for understanding ecological dynamics of plant populations and is a major factor in the

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Sakai, Shoko. "General flowering in an asesonal tropical forest : plant reproductive phenology and plant-pollinator interactions in a lowland dipterocarp forest in Sarawak." 京都大学 (Kyoto University), 1999. http://hdl.handle.net/2433/157180.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(理学)<br>甲第7693号<br>理博第2078号<br>新制||理||1105(附属図書館)<br>UT51-99-G287<br>京都大学大学院理学研究科生物科学専攻<br>(主査)教授山村則男, 教授堀道雄, 教授浅野透<br>学位規則第4条第1項該当

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Goulnik, Jérémie. "Étude fonctionnelle de la fonction de pollinisation entomophile en prairie permanente sous l'effet d'un gradient d'intensification agricole." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0297.

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Le déclin de la biodiversité et son impact sur le fonctionnement des écosystèmes sont un enjeu majeur du XXIème siècle. L’agriculture intensive est aujourd’hui considérée comme l’un des facteurs responsables de ce déclin, suscitant une volonté sociétale pour une transition vers l’agroécologie. Celle-ci vise à intégrer les fonctions écologiques dans la production des biens agricoles. Les prairies permanentes sont au cœur de ces enjeux, étant à la fois essentielles pour l’alimentation du bétail, tout en pouvant abriter une forte biodiversité. L'intensification des pratiques agricoles peut modifi

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Zumkier, Ulrich [Verfasser]. "Impacts of the invasive alien Heracleum mantegazzianum on native plant-pollinator interactions / Ulrich Zumkier. Fakultät für Biologie." Bielefeld : Universitätsbibliothek Bielefeld, Hochschulschriften, 2012. http://d-nb.info/1019892471/34.

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Carman, Karlie. "Effects of mechanical habitat disturbance on the diversity and network structure of plant-bee interaction networks in Central Florida." Master's thesis, University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6252.

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Ecological interactions within a community shape the structure of ecosystems and influence ecosystem function. Plant-pollinator interactions exist as mutualistic exchange networks that may collapse as habitat loss occurs, thereby threatening the overall health of an ecosystem. Understanding the impacts of human-mediated habitat disturbance on ecological interactions is therefore crucial for conservation efforts. Archbold Biological Station (ABS) in Venus, Florida contains over 2000 hectares of protected Florida scrub habitat nested within a human-dominated environment that is threatened by ant

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Evans, Tracie Marie. "Effects of the availability of floral resources on plant-pollinator interactions and the implications for the long-term survival of plant populations." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33045.

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1. Insect pollinators have been shown to alter their foraging patterns in response to habitat and landscape composition, particularly in relation to changes in the availability of floral resources which provide essential pollen and nectar provisions. Changes to pollinator behaviour and community composition, may alter the distance, directness and frequency of pollen movement and thus, the compatibility and genetic relatedness of pollen transferred between plants. We still lack good understanding of how variation in the spatial and temporal availability of floral resources drives pollinator res

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Barker, Daniel A. "Congruence and within-season variation in floral visitation and pollen transport networks in Southern Appalachia plant-pollinator communities." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/asrf/2019/schedule/227.

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Previous studies of plant-pollinator interactions have relied on the use of floral visitation data. Although, this may be insufficient to fully characterize the diversity and strength of plant-pollinator interactions. By using pollen transport data (i.e. pollen on pollinators), new insights can be gained on the structure and function of plant-pollinator communities. Yet studies that characterize and compare pollen-transport with floral-visitation networks are scarce. Furthermore, the strength and frequency of plant-pollinator interactions can vary across temporal scales. Although, monthly and

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Martins, Amanda Eburneo. "Padrões de cores de flores e a polinização em vegetações sazonais /." Rio Claro, 2019. http://hdl.handle.net/11449/191419.

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Orientador: Leonor Patricia Cerdeira Morellato<br>Resumo: A visão é o principal sentido utilizado pelos polinizadores para forragear, no qual a cor das flores é a primeira característica de atração. A percepção dos sinais de cores depende da coloração do segundo plano das flores, composto principalmente pelas folhas. Diferenças na composição das espécies e na estrutura da vegetação, e também na sazonalidade climática, podem interferir na cor do segundo plano de folhas em diferentes vegetações e estações, interferindo como os polinizadores percebem a flor. Portanto, a diversidade de cores das f

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De, Jager Marinus Louis. "The role of pollinators in generating and maintaining floral polymorphism : phylogeographic and behavioural aspects." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/79883.

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Thesis (PhD)--Stellenbosch University, 2013.<br>Pollinators play a fundamental role in floral evolution. They can exert selection on the flowers they visit in a plethora of different ways, ranging from innate floral preferences to differences in body size and shape and behavioural elements such as flower constancy and learning capacity. Since different pollinators exhibit differences in these characters, shifts between pollinating species are often considered the most likely drivers of floral diversification. While many lines of evidence support this claim, numerous angiosperms pollinated

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Barker, Daniel A. "Congruence and Temporal Variation of Floral Visitation and Pollen Transport Networks in Southern Appalachia." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/etd/3811.

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Observation of floral visitation is an accepted method to describe plant-pollinator interactions despite potential biases. Collecting pollen from pollinators offers new insights on the structure and function of plant-pollinator communities. Furthermore, the strength and frequency of plant-pollinator interactions can vary across temporal scales. However, within-season and within-day (morning vs. evening) variation in plant-pollinator networks has been little studied. By evaluating variation in network structure across these biologically relevant time scales, we will gain a better understanding

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Barker, Daniel A. "Congruence and Temporal Variation of Floral Visitation and Pollen Transport Networks in Southern Appalachia." Digital Commons @ East Tennessee State University, 2008. https://dc.etsu.edu/etd/3811.

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Observation of floral visitation is an accepted method to describe plant-pollinator interactions despite potential biases. Collecting pollen from pollinators offers new insights on the structure and function of plant-pollinator communities. Furthermore, the strength and frequency of plant-pollinator interactions can vary across temporal scales. However, within-season and within-day (morning vs. evening) variation in plant-pollinator networks has been little studied. By evaluating variation in network structure across these biologically relevant time scales, we will gain a better understanding

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Lindgren, Jessica. "Small remnant habitats : Important structures in fragmented landscapes." Doctoral thesis, Stockholms universitet, Institutionen för naturgeografi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-148653.

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The world-wide intensification of agriculture has led to a decline in species richness due to land use change, isolation, and fragmentation of natural and semi-natural habitats in agricultural and forestry landscapes. As a consequence, there is a current landscape management focus on the importance of green infrastructure to mitigate biodiversity decline and preserve ecosystem functions e.g. pollination services and pest control. Even though intensification in agriculture has been ongoing for several hundreds of years, remnant habitats from earlier management practices may still be remaining w

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Waites, Anna R. "Plant-animal interactions and seed output of two insectpollinated herbs." Doctoral thesis, Umeå University, Ecology and Environmental Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-576.

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<p>I combined comparative and experimental studies in the field and in the greenhouse to examine factors influencing reproductive success in two insect-pollinated herbs, the tristylous, selfincompatible perennial <i>Lythrum salicaria</i> and the self-compatible, biennial <i>Pedicularis palustris</i>. More specifically, I explored (i) the effects of plant population characteristics on the intensity and outcome of interactions with pollinators and seed predators, (ii) whether flower morphology affects duration of stigma receptivity, and (iii) whether dam

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Banza, Paula. "Investigating the importance of Nocturnal Lepidoptera as Pollinators: a network approach." Master's thesis, Universidade de Évora, 2011. http://hdl.handle.net/10174/15569.

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A polinização pode ser entendida ao nível da comunidade ecológica como uma rede de interacções mutualistas entre dois níveis tróficos, já que a maior das plantas utiliza múltiplos polinizadores e vice-versa. Nos últimos dez anos houve um crescente interesse nas redes de polinização e muitas têm sido estudadas e descritas cobrindo uma ampla variedade geográfica e ecológica. Contudo o estudo dos polinizadores nocturnos ao nível da comunidade, tem sido descurado e praticamente não existem redes nocturnas de polinização descritas na literatura especializada. Os Lepidópteros nocturnos são talvez do

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Johner, Julia. "The effects of soil warming on flowering phenology, reproductive strategy and attractiveness to pollinators in the herb Cerastium fontanum (Caryophyllaceae)." Thesis, Stockholms universitet, Institutionen för ekologi, miljö och botanik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-184959.

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Phenotypic plasticity plays an important role in organisms’ adaptability to environmental change such as global warming caused by greenhouse-gas emissions. One plastic response to increased temperatures is for organisms to shift their phenology. It is of great concern that the phenologies of interacting species, such as plants and pollinators, may be shifting at different rates, causing temporal mismatches, which for plants can lead to unsuccessful reproduction. The “reproductive assurance hypothesis” states that plants capable of self-pollination should be under high selection to employ this

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Vrdoljak, Sven Michael. "The conservation value of habitat remnants for flower visiting insects in the lowlands of the Cape Floristic Region." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5280.

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Thesis (PhD(Agric) (Conservation Ecology and Entomology))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: See full text document for abstract<br>AFRIKAANSE OPSOMMING: sien volteks dokument vir die opsomming

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Fründ, Jochen. "Pollinator biodiversity, functional complementarity and dynamic plant-pollinator interaction networks." Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-000D-EF81-C.

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Meyer, Birgit. "Pollinator communities and plant-pollinator interactions in fragmented calcareous grasslands." Doctoral thesis, 2007. http://hdl.handle.net/11858/00-1735-0000-0006-B001-4.

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Krishnan, Aparna. "Plant-Pollinator Interactions in Lantana camara." Thesis, 2018. https://publications.azimpremjiuniversity.edu.in/152/1/neelima-final.pdf.

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Lantana camara, an invasive plant in India, has brightly coloured inﬂorescences whose ﬂowers undergo dramatic colour changes during its lifetime. This colour change acts as an honest signal for pollinators, where ﬂower colour reliably advertises the quantity and quality of nectar and pollen. In this study, we characterised how nectar quality changes as the colour of Lantana ﬂowers change and examined how insects respond to this. We found that before colour change (henceforth pre-change), ﬂowers had more sucrose concentration than after-colour change (henceforth post-change), thereby advertisin

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Forrest, Jessica. "Plant-pollinator Interactions in a Changing Climate." Thesis, 2011. http://hdl.handle.net/1807/29723.

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Climate change is shifting the seasonal timing of many biological events, and the possibility of non-parallel shifts in different taxa has raised concerns about phenological decoupling of interacting species. My thesis investigates interactions between climate, phenology, and pollination, using the plants and pollinators of Rocky Mountain meadows as a study system. Interannual variation in timing of snowmelt since the 1970s has been associated with changes in the assemblages of concurrently flowering species in these meadows, suggesting that plant species differ in their phenological responses

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Hadrava, Jiří. "Prostorová rozmanitost opylovacích sítí." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-350890.

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Plant-pollinator interaction assembly can be represented as so called pollination network. Using these networks, assembly of plant-pollinator communities and geographic patterns in pollination networks can be studied. During last years, a great progress in describing patterns in structure of plant-pollinator interaction webs and in describing their spatial variability was made. However, these results are mostly based on data from previous studies, which are not seamlessly comparable due to their nonuniformity. My thesis aims at the methodological concepts of study on pollination networks. Base

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Janovský, Zdeněk. "Vliv biotických interakcí na populační biologii lučních rostlin." Doctoral thesis, 2015. http://www.nusl.cz/ntk/nusl-336159.

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In present thesis, I treat the topic of impacts of plant-animal interactions, namely herbivory and pollination, on plant life cycle and lifetime fitness. First, I identify the components of the impact of plant-animal interactions: i) interaction frequency; ii) per-interaction effect; iii) sensitivity of the plant's life cycle to the changes in vital rate impacted by the animals. Furthermore, I also classify other causes changing the outcome of a plant-animal interaction into two categories: i) plant's traits; ii) plant's environment. A review of extant literature on the topic revealed that esp

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Meyer, Birgit [Verfasser]. "Pollinator communities and plant pollinator interactions in fragmented calcareous grasslands / vorgelegt von Birgit Meyer." 2007. http://d-nb.info/98683761X/34.

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Santos, António Carlos Filipe dos. "Effect of eutrophication on plant-pollinator interactions of crop species." Master's thesis, 2021. http://hdl.handle.net/10316/98221.

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Dissertação de Mestrado em Ecologia apresentada à Faculdade de Ciências e Tecnologia<br>O uso crescente de agroquímicos, sobretudo fertilizantes e pesticidas, torna-se cada vez mais um fator preocupante no que toca ao ténue equilíbrio entre estabilidade ecológica e expansão agrícola. Ainda mais quando a expansão de terras agrícolas e intensificação agrícola podem causar um impacto drástico na composição floral e disponibilidade de locais de nidificação e, por sua vez, alterar as interações planta-polinizador. Não são só as flores silvestres que dependem dos polinizadores, mas também as espécie

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