Log in

Relevant bibliographies by topics / Foraging strategy / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Foraging strategy.

Dissertations / Theses on the topic 'Foraging strategy'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 40 dissertations / theses for your research on the topic 'Foraging strategy.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Stewart, L. A. "Size and foraging in coccinellids." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384473.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Takemoto(Nota), Yukiko. "Foraging strategy of the Little Egret Egretta garzetta." 京都大学 (Kyoto University), 2000. http://hdl.handle.net/2433/151667.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Day, Elaine Baird. "Medial and dorsal cortex function and foraging strategy in lizards /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Van, Nest Byron N. "Time-Memory Behavior Yields Energetically Optimal Foraging Strategy in Honey Bees." Digital Commons @ East Tennessee State University, 2010. https://dc.etsu.edu/etd/1709.

Full text

Abstract:

Classical experiments on honey bee time-memory showed that foragers trained to collect food at a fixed time of day return the following day with a remarkable degree of time-accuracy. A series of field experiments revealed that not all foragers return to a food source on unrewarded test days. Rather, there exist two subgroups: "persistent" foragers reconnoiter the source; "reticent" foragers wait in the hive for confirmation of source availability. A forager's probability of being persistent is dependent both on the amount of experience it has had at the source and the environmental conditions

APA, Harvard, Vancouver, ISO, and other styles

5

Medeiros, Mirra Renata Jorge. "The migration strategy, diet and foraging ecology of a small seabird in a changing environment." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54124/.

Full text

Abstract:

This thesis examines the migration strategy, diet and foraging ecology of the smallest Atlantic seabird, the European Storm Petrel Hydrobates pelagicus.Evidence was found for sex-specific migration behaviour, opportunistic feeding, temporal variation in diet, and the strategy regulation of energy reserves in response to varying environmental conditions, as a buffer against starvation during migration. Molecular sexing from feather and faecal samples revealed an unexpectedly strong female bias in the sex ratio of Storm Petrels attracted to tape-lures of conspecific calls, during their northward

APA, Harvard, Vancouver, ISO, and other styles

6

Labrousse, Sara. "Beneath the sea ice : exploring elephant seal foraging strategy in Earth's extreme Antarctic polar environment." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066542/document.

Full text

Abstract:

Les mammifères marins de l'Océan Austral sont des éléments essentiels des écosystèmes marins antarctiques et des sentinelles de l’état des océans polaires. Comprendre comment les conditions océanographiques déterminent leurs habitats préférentiels est essentiel pour identifier de quelle façon et dans quelle région ces mammifères acquièrent les ressources nécessaires à leur déplacement, leur croissance, leur reproduction et donc leur survie. Les éléphants de mer du Sud (Mirounga leonina) se déplacent dans l’océan austral à l’échelle des bassins océaniques pour s’alimenter en plongeant en moyenn

APA, Harvard, Vancouver, ISO, and other styles

7

Labrousse, Sara. "Beneath the sea ice : exploring elephant seal foraging strategy in Earth's extreme Antarctic polar environment." Electronic Thesis or Diss., Paris 6, 2016. http://www.theses.fr/2016PA066542.

Full text

Abstract:

Les mammifères marins de l'Océan Austral sont des éléments essentiels des écosystèmes marins antarctiques et des sentinelles de l’état des océans polaires. Comprendre comment les conditions océanographiques déterminent leurs habitats préférentiels est essentiel pour identifier de quelle façon et dans quelle région ces mammifères acquièrent les ressources nécessaires à leur déplacement, leur croissance, leur reproduction et donc leur survie. Les éléphants de mer du Sud (Mirounga leonina) se déplacent dans l’océan austral à l’échelle des bassins océaniques pour s’alimenter en plongeant en moyenn

APA, Harvard, Vancouver, ISO, and other styles

8

Bala, Saminu Iliyasu. "Planktonic contact and predation rates : Studies on saltatory foraging strategy and prey perception by hydromechanical means." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511082.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Creasey, Matthew John Stanley. "Social specialists? : personality variation, foraging strategy and group size in the chestnut-crowned babbler, Pomatostomus ruficeps." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/33703.

Full text

Abstract:

Although group-living is widespread in animals, the degree of social complexity varies markedly within and among taxa. One important precondition for the evolution of higher forms of social complexity is increasing group size. However, this imposes a challenge: finding sufficient food for growing numbers of individuals. One hypothesis is that the (in)ability to avoid resource competition as group size increases, could partly explain variation in social complexity among vertebrates. Increasingly, evidence suggests that resource competition can be reduced via three forms of individual specialisa

APA, Harvard, Vancouver, ISO, and other styles

10

Daniels, Wiltrud. "The complex foraging strategy of the specialised gall fly Urophora cardui (Diptera: Tephritidae) for host plants (Cirsium arvense, Asteraceae)." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972290540.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Sato, Hiroki. "The Foraging Strategy of Common Brown Lemurs and the Importance as Seed Dispersers in a Dry Deciduous Forest in Northwestern Madagascar." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/142475.

Full text

Abstract:

Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(地域研究)<br>甲第16198号<br>地博第115号<br>新制||地||37(附属図書館)<br>28777<br>京都大学大学院アジア・アフリカ地域研究研究科アフリカ地域研究専攻<br>(主査)准教授山越言, 教授小林繁男, 准教授森哲, 准教授中川尚史<br>学位規則第4条第1項該当

APA, Harvard, Vancouver, ISO, and other styles

12

Warrick, Douglas Robert. "Prey flight behaviors in response to wading bird disturbances and their influence on foraging strategy of Great Blue Herons (Ardea herodias)." Thesis, Thesis (M.S.)--University of Oregon, 1992, 1992. http://hdl.handle.net/1794/9891.

Full text

Abstract:

Typescript. Includes vita and abstract. Bibliography: Includes bibliographical references (leaves 89-91).<br>A geometric model using idealized prey behaviors in reaction to wading bird disturbances was developed to hypothesize how wading bird foraging strategy might most efficiently counter those behaviors. The model suggests that for prey responding to wading bird disturbances with flight response distance strongly negatively correlated to their distance from the point of disturbance, wading birds could employ disturbance facilitated social foraging strategy, thereby increasing indi

APA, Harvard, Vancouver, ISO, and other styles

13

Clymer, Gretchen A. "Foraging Responses to Nutritional Pressures in Two Species of Cercopithecines: Macaca mulatta and Papio ursinus." unrestricted, 2006. http://etd.gsu.edu/theses/available/etd-04282006-000204/.

Full text

Abstract:

Thesis (M.A.)--Georgia State University, 2006.<br>Title from title screen. Frank L'Engle Williams, committee chair; Aras Petrulis, Susan McCombie, committee members. Electronic text (69 p.) : digital, PDF file. Description based on contents viewed Apr. 26, 2007. Includes bibliographical references (p. 58-67).

APA, Harvard, Vancouver, ISO, and other styles

14

Pickens, Bradley A. "THE CONSEQUENCES OF A MANAGEMENT STRATEGY FOR THE ENDANGERED KARNER BLUE BUTTERFLY." Bowling Green State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1149173870.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Charalabidis, Alice. "Effect of inter-individual variabilities and intraguild interferences on the foraging stratégies of seed-eating carabid species." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCK035/document.

Full text

Abstract:

Faire un choix n’est pas juste un évènement spontané. La recherche d’une ressource alimentaire, par exemple, implique un investissement temporel et est donc en conflit avec d’autres activités essentielles telles que la vigilance pour les prédateurs. Ainsi être sélectif augmente le risque de se faire attaquer par un prédateur. Par ailleurs, être sélectif implique aussi de rejeter beaucoup de potentielles options avant de finalement en accepter une et donc accepter une perte non négligeable d’opportunités en présence de potentiels compétiteurs. Pour ces raisons, une réduction du niveau de sélect

APA, Harvard, Vancouver, ISO, and other styles

16

Louis, Marceau. "Collective foraging is an efficient strategy for low density population of the bark beetle Ips typographus (Coleoptera, Curculionidae) in need for scarce, unpredictable and ephemeral resources." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/222963.

Full text

Abstract:

Ips typographus est le principal ravageur de l'épicéa en Europe, s’attaquant en masse aux arbres vivants en période d’épidémie, par le biais d’une communication chimique. Comme de nombreuses autres espèces de scolytes « agressives », le typographe se reproduit uniquement sur des arbres affaiblis ou des chablis en périodes d’endémie, quand les densités de population ne sont pas suffisantes pour surmonter les défenses des arbres vivants. Ces ressources sont en général présentées dans la littérature comme étant dispersées et imprédictibles dans le temps et l’espace. De plus, ces ressources affaib

APA, Harvard, Vancouver, ISO, and other styles

17

Hastenreiter, Isabel Neto. "Novas perspectivas sobre a ocorrência do comportamento de caroneira." Universidade Federal de Juiz de Fora, 2016. https://repositorio.ufjf.br/jspui/handle/ufjf/1767.

Full text

Abstract:

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-06-07T13:56:48Z No. of bitstreams: 1 isabelnetohastenreiter.pdf: 312777 bytes, checksum: c72248e87e64decb1255f12baae71e68 (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-07-13T13:15:20Z (GMT) No. of bitstreams: 1 isabelnetohastenreiter.pdf: 312777 bytes, checksum: c72248e87e64decb1255f12baae71e68 (MD5)<br>Made available in DSpace on 2016-07-13T13:15:20Z (GMT). No. of bitstreams: 1 isabelnetohastenreiter.pdf: 312777 bytes, checksum: c72248e87e64decb1255f12baae71e68 (MD5) Previous

APA, Harvard, Vancouver, ISO, and other styles

18

Quinalha, Marília Monteiro. "Limitação de pólen em uma espécie ornitófila de cerrado causas e consequências /." Botucatu, 2020. http://hdl.handle.net/11449/192400.

Full text

Abstract:

Orientador: Elza Maria Guimarães Santos<br>Resumo: A limitação de pólen é um dos fatores que mais afeta a produção de frutos e sementes de muitas populações naturais. Cerca de 60% das angiospermas apresentam baixo sucesso reprodutivo decorrente da transferência ineficiente dos grãos de pólen pelos polinizadores. Assim, o objetivo geral desse estudo foi avaliar diversos aspectos ligados à limitação de pólen em Zeyheria montana (Bignoniaceae), uma espécie ornitófila e autoincompatível. Ao longo do período de florescimento, com ampla variação do anúncio floral, nós avaliamos o efeito do padrão de

APA, Harvard, Vancouver, ISO, and other styles

19

Fischbein, Deborah. "Influencia de los rasgos de historia de vida y del uso de información en la adquisición de recursos y dispersión en el parasitoide Ibalia leucospoides Hochenwarth (Hymenoptera Ibaliidae)." Thesis, Lyon 1, 2011. http://www.theses.fr/2011LYO10105.

Full text

Abstract:

L'objectif principal de cette thèse est d'étudier comment la sélection naturelle façonne les traits d'histoire de vie et le comportement des animaux en fonction de l'environnement écologique dans lequel ils évoluent. Ce cadre théorique soulève des hypothèses spécifiques concernant les processus de reproduction, de dispersion et d'approvisionnement chez le parasitoïde Ibalia leucospoides. Les expériences d'écologie comportementale et d'écophysiologie menées sur des parasitoïdes femelles d' Ibalia leucospoides démontrent principalement que (1) la proportion d'oeufs matures que possède la femelle

APA, Harvard, Vancouver, ISO, and other styles

20

Watkins, Nigel G. "Ecological correlates of bird damage in a Canterbury vineyard." Lincoln University, 1999. http://hdl.handle.net/10182/508.

Full text

Abstract:

Birds are a major pest in vineyards both in New Zealand and overseas. There is a need for new behavioural research on birds' foraging habits and feeding preferences in vineyards, as much of the literature to date is anecdotal. Research on cues to birds' feeding will provide a basis on which new deterrent and control strategies can be devised. Spatial-and temporal bird damage in a small vineyard block was mapped to find if damage was correlated with grape maturity and environmental factors. Vineyard and field observations of bird behaviour using video technology combined with preference experim

APA, Harvard, Vancouver, ISO, and other styles

21

Jouma'a, Joffrey. "Stratégies d'acquisition des ressources en proies et coût du transport chez l'éléphant de mer austral." Thesis, La Rochelle, 2016. http://www.theses.fr/2016LAROS014/document.

Full text

Abstract:

L’océan austral est un écosystème fragile dont la dynamique est influencée par des variations climatiques qui vont structurer la distribution spatio-temporelle des ressources. L’objectif de cette thèse était d’étudier les stratégies d’acquisition des ressources en proies mises en place par l’éléphant de mer austral face aux contraintes énergétiques (coûts du transport et coûts d’accès à la ressource) et temporelles (temps passé au fond d’une plongée et limite de plongée aérobie) auxquelles il est soumis. L’utilisation d’un ensemble d’enregistreurs de données déployés sur ces animaux a permis d

APA, Harvard, Vancouver, ISO, and other styles

22

Sullins, Daniel S. "Regional variation in demography, distribution, foraging, and strategic conservation of lesser prairie-chickens in Kansas and Colorado." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/35604.

Full text

Abstract:

Doctor of Philosophy<br>Department of Biology<br>David A. Haukos<br>The lesser prairie-chicken (Tympanuchus pallidicinctus) is 1 of 3 prairie-grouse species in North America. Prairie-grouse have undergone local or widespread declines due to a loss of habitat through conversion to row crop agriculture, anthropogenic development, and alteration of ecological drivers that maintain quality grasslands. For lesser prairie-chickens, habitat loss and declines were deemed significant for listing as threatened under the Endangered Species Act in 2014. Despite a judge vacating the listing decision in

APA, Harvard, Vancouver, ISO, and other styles

23

Marks, Theodore Pearson. "Bedtime for the Middle Stone Age: land use, strategic foraging, and lithic technology at the end of the Pleistocene in the Namib Desert, Namibia." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6198.

Full text

Abstract:

Scholars of the Late Pleistocene in Southern Africa have recently sought to develop models explaining long-term variation between Middle Stone Age and Late Stone Age assemblages in terms of variability between “macrolithic” vs. “microlithic” toolmaking systems associated with shifts in hunter-gatherer ecology and land use patterns. While it has often proven extremely difficult to actually test many models, recently developed methods allow us to do so in novel ways. In this dissertation, I use new archaeological data from excavations of two sites in the Namib Desert, as well as new approaches t

APA, Harvard, Vancouver, ISO, and other styles

24

Meurisse, Nicolas. "Chemical ecology of rhizophagus grandis (Coleoptera: Monotomidae) and its application to the biological control of dendroctonus micans (Coleoptera: Scolytinae)." Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210567.

Full text

Abstract:

The Eurasian spruce bark beetle Dendroctonus micans is a major pest of spruce which is expanding its range in France, Turkey, England and Wales. Its monospecific predator Rhizophagus grandis has followed naturally the bark beetle into most areas and, since the 1960s, has also been mass-produced and successfully released within newly infested locations. <p>In this scope, the development of an effective trapping method would be very useful to assess the bark-beetle presence at previously uninfested sites, or predator establishment after release or natural spread. We demonstrated the efficiency o

APA, Harvard, Vancouver, ISO, and other styles

25

Yi-Te, Lai. "Foraging strategy and foraging behavior in the predatory leech Whitmania laevis (Arhynchobdellida: Haemopidae)." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2407200615592300.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Lai, Yi-Te, and 賴亦德. "Foraging strategy and foraging behavior in the predatory leech Whitmania laevis (Arhynchobdellida: Haemopidae)." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/06683387060721865327.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

MENDES, ROBERTO FILIPE AFONSO. "Foraging ecology of yellow-legged gulls with a marine strategy." Master's thesis, 2017. http://hdl.handle.net/10316/83229.

Full text

Abstract:

Dissertação de Mestrado em Ecologia apresentada à Faculdade de Ciências e Tecnologia<br>Seagulls are opportunistic seabirds that can feed on a wide variety of food, including anthropogenic resources, traveling even for dozens kilometers in that demand. This work focuses on the foraging strategies (particularly the marine strategy) of the yellow - legged gull (Larus michaellis) in two distinct colonies (Berlenga – from 2011 to 2016 and Deserta – in 2015 and 2016) during the breeding season (May - June). In addition, the strategies of yellow-legged gulls were compared with the foraging strategy

APA, Harvard, Vancouver, ISO, and other styles

28

Weclaw, Piotr. "Optimal use of resources : classic foraging theory, satisficing and smart foraging - modelling foraging behaviors of elk /." Phd thesis, 2010. http://hdl.handle.net/10048/996.

Full text

Abstract:

Thesis (Ph.D.)--University of Alberta, 2010.<br>Title from PDF file main screen (viewed on July 8, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Department of Renewable Resources, University of Alberta. Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

29

Labrousse, SA. "Beneath the sea ice : exploring elephant seal foraging strategy in Earth’s extreme Antarctic polar environment." Thesis, 2017. https://eprints.utas.edu.au/23857/1/Labrousse_whole_thesis.pdf.

Full text

Abstract:

Understanding how physical properties of the environment underpin habitat selection of large marine vertebrates is crucial in identifying how and where animals acquire resources necessary for locomotion, growth and reproduction and ultimately their fitness. The Southern Ocean harbors one of the largest and most dynamic marine ecosystems on our planet which arises from the presence of two majors physical features dominating the ecosystem dynamics, (i) the Antarctic Circumpolar Current and (ii) the seasonal sea ice cover region. In the Antarctic, marine predators are exposed to climate-induced s

APA, Harvard, Vancouver, ISO, and other styles

30

Lin, Ping-Chih, and 林品誌. "The Tool Selection of Foraging Strategy between Different Colony Size in Aphaenogaster tipuna（Hymenoptera: Formicidae）." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/882wf8.

Full text

Abstract:

碩士<br>國立彰化師範大學<br>生物學系<br>107<br>Tool use by the nonhuman animals has been noticed and researched in recent decades. Compared to the most research about primates and Corvidae, only few researches about the formicidae. In the past, the tool used by ants mainly recorded by observation. Previously research indicate, Aphaenogaster senilis has the selectively preferences and flexibility about tool use. But the tool selection of foraging strategy between different colony size didn't have further investigate. In this research, we want investigated the tool selection of foraging strategy between diffe

APA, Harvard, Vancouver, ISO, and other styles

31

Grant, John D. A. "Aspects of the foraging strategy of an insectivorous bat, Nyctophilus gouldi Tomes, 1858 (Microchiroptera: Vespertilionidae)." Phd thesis, 1988. http://hdl.handle.net/1885/142327.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Chen, Chieh-Han, and 陳玠含. "A Novel Strategy-adaptation-based Bacterial Foraging Optimization for FCMAC Model and Its Applications in Classification." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/06701788743677371159.

Full text

Abstract:

碩士<br>國立勤益科技大學<br>資訊工程系<br>101<br>In this thesis, we propose a fuzzy cerebellar model articulation controller (FCMAC) model with improved bacterial foraging optimization (BFO). The proposed modified bacterial foraging optimization is called Strategy-adaptation-based Bacterial Foraging Optimization (SABFO). The SABFO is use to adjust the weights of FCMAC model and facilitate the actual output of the FCMAC model approximating the desired output for classifications. This thesis consisted of two major parts. In the first part, we propose a new Strategy-adaptation-based Bacterial Foraging Optimiza

APA, Harvard, Vancouver, ISO, and other styles

33

Wei, Shih-Min, and 魏世旻. "Mobile Robot Wall-following Control Using a Fuzzy CMAC with Group-based Strategy Bacterial Foraging Optimization." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/20707906136341859210.

Full text

Abstract:

碩士<br>國立勤益科技大學<br>資訊工程系<br>103<br>In this paper, a fuzzy cerebellar model articulation controller (FCMAC) with group-based strategy bacterial foraging optimization (GSBFO) for mobile robot wall-following control is proposed. In the proposed FCMAC controller, the inputs are the distance between the sonar and the wall, the outputs are the angular velocity of two wheels. Through using the GSBFO to adjust parameters of FCMAC. A new fitness function is defined to evaluate the evolution of mobile robot wall-following. The fitness function includes four assessment factors which are defined as follows

APA, Harvard, Vancouver, ISO, and other styles

34

Shih, Po-Lin, and 施伯霖. "Integrated Optimal Energy Management/Gear Shifting Strategy Using Bacterial Foraging Algorithm for a Three-Power-Source Hybrid Powertrain." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/wdaw58.

Full text

Abstract:

碩士<br>國立臺灣師範大學<br>工業教育學系<br>105<br>The purpose of this study is to develop the bacterial foraging algorithm (BFA) by applying it to the energy management/gear shifting strategy system of a three-power-source hybrid powertrain. Furthermore, this study was practical in nature, as it used the real-time simulation Hardware-in-the-Loop (HIL) to verify the algorithm’s feasibility. This study employs HIL to assess the influence that using BFA will have on the energy management and gear shifting strategy control of a three-power-source hybrid powertrain. The vehicle weighs 1,368 kilograms and its subs

APA, Harvard, Vancouver, ISO, and other styles

35

"Fertility of frost boils and the effect of diapirism on plant nitrogen uptake in a polar desert ecosystem of the Canadian High Arctic." Thesis, 2016. http://hdl.handle.net/10388/ETD-2016-02-2431.

Full text

Abstract:

Polar desert environments are limiting in plant available nutrients, mainly nitrogen (N) and phosphorus (P) that severely limit plant growth and establishment. Cryogenic activity regularly patterns the ground into a patchwork of frost boils – sorted circles that are associated with an increase in moisture, fertility and plant cover. Within some frost boils, the accumulation of ice-rich soil at the permafrost table can cause an upward flow of soil organic carbon (SOC) enriched permafrost material into the active layer. These diapiric intrusions are predicted to fuel microbial activity and enric

APA, Harvard, Vancouver, ISO, and other styles

36

Daniels, Wiltrud [Verfasser]. "The complex foraging strategy of the specialised gall fly Urophora cardui (Diptera: Tephritidae) for host plants (Cirsium arvense, Asteraceae) / vorgelegt von Wiltrud Daniels." 2004. http://d-nb.info/972290540/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Cerveira, Lara Rodrigues. "Implications of seasonal and annual changes in oceanic productivity on the at-sea spatial and temporal consistency of Cape Verde shearwaters (Calonectris edwardsii)." Master's thesis, 2019. http://hdl.handle.net/10316/87909.

Full text

Abstract:

Dissertação de Mestrado em Ecologia apresentada à Faculdade de Ciências e Tecnologia<br>A abundância e a previsibilidade dos recursos alimentares para os predadores marinhos são altamente influenciadas pelas mudanças anuais das condições oceanográficas, mas, em geral, são menores nos ecossistemas tropicais do que nos temperados. No entanto, fenómenos de afloramento em determinadas áreas costeiras permitem a multiplicação e emergência de muitas espécies. As aves marinhas são predadores marinhos de topo que têm sido usados para avaliar a saúde do ecossistema e compreender as alterações nos ambie

APA, Harvard, Vancouver, ISO, and other styles

38

Růžičková, Lucie. "Sběr plodů: (ne)tradiční strategie získávání potravin ve městě?" Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-388615.

Full text

Abstract:

A research of foraging represents a relatively new phenomenon abroad. In Czechia, on the other hand, this is an ordinary issue with a long-time tradition, but until recently it has not received much attention by the scientific community. For this reason the following diploma thesis deals with this activity. It consists of two main units. The first part aims to create the theoretical framework necessary for the introduction into the foraging study. There is a familiarization with the trend of the self-provisioning in general both in Czechia and abroad. A substantial part of the theoretical fram

APA, Harvard, Vancouver, ISO, and other styles

39

Gooch, Scott. "Effects of white-tailed deer herbivory on a tallgrass prairie remnant." 2010. http://hdl.handle.net/1993/3847.

Full text

Abstract:

A study was conducted to determine what impact high white-tailed deer (Odocoileus virginianus) densities were having on the native grasslands of a tallgrass: aspen forest tract embedded within an agro-urban setting. Due to excessive spring moisture, row-crops were unavailable the first year. Using microhistological fecal analysis to determine dietary composition, deer were assessed to be placing the site’s favoured native plant species at risk of extirpation. Measuring woody stem abundance and height along and near the prairie: forest ecotone, deer were found to restructure woody growth but no

APA, Harvard, Vancouver, ISO, and other styles

40

Jażdżewski, Maciej. "Porównanie strategii żerowania kozy Cobitis taenia complex (Linneusz, 1758) i kozy bałtyckiej Sabanejewia baltica (Witkowski, 1994) (Pisces, Cobitidae)." Phd diss., 2020. http://hdl.handle.net/11089/32566.

Full text

Abstract:

Comparison of the foraging strategies of spined loach (Cobitis taenia complex) and northern golden loach (Sabanejewia baltica) was conducted. Due to current limited knowledge on the nutritional biology of both species, diel research of fish diet was conducted in: spring, summer and autumn. Because the sensory organs responsible for finding food may affect differences in the feeding efficiency of these fishes, the structure of the olfactory organ of both species was examined. The stomach fullness index of S. baltica was higher than for spined loach. Both species showed similar patterns of fora

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!