Relevant bibliographies by topics / Seasonal variation / Dissertations / Theses
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Dissertations / Theses on the topic 'Seasonal variation'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Price, Myra Ann. "Seasonal Variation in Runoff Curve Number." Thesis, The University of Arizona, 1998. http://hdl.handle.net/10150/225411.

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The seasonal variation in rainfall - runoff response is investigated for about 300 small watersheds throughout the United States. Data from USDA research watersheds were used to define runoff Curve Number for ordered data sets by months. Three major patterns of cyclic variation are found and investigated: 1) distinct and well - defined seasonal variations as typified by forested watersheds in heavy rainfall zones; 2) mildly cyclic variation found typically in meadows and grasslands, and 3) non - cyclic or unidentifiable patterns, including those with insufficient seasonal data. The only patter
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2

Morken, Gunnar. "Seasonal Variation of Human Mood and Behavior." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Medicine, 2001. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-326.

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<p>Seasonal variations of mood, behavior and physiology have been of increasing interest. At least two different seasonal rhythms seem to exist: Descriptions of Seasonal Affective Disorder (SAD) with increased weight, increased sleep and fatigue during winter have attracted attention in academic psychiatry and in the general public the last two decades. In addition to such a difference in mood, weight and sleep between summer and winter, many studies describe a spring and fall increase in frequency of suicides and of admissions to hospital for mood disorders. In searching for a possible etiolo
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3

Postuma, Ronald B. "Seasonal variation in risk of Parkinson's disease." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99199.

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Parkinson's disease (PD) is a common neurodegenerative condition characterized by progressive motor, speech, swallowing, and gait difficulties. Risk factors for PD include male sex, pesticide exposure, head trauma, and rural living, but these account for only a small amount of the variation in risk. Recent studies suggest that for many neurological diseases, people born at a certain time of year are at higher risk of developing the disease. Small-scale studies have also suggested that persons born in the spring may be at higher risk of developing PD late in life. We examined the birth dates of
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4

Corry, R. A. "Modelling the seasonal variation of the Florida current." Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:644edc47-15b5-491f-a2a3-a2c25c864791.

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The linear response of a two layer ocean model to a periodic wind stress curl in the presence of bottom topography has been investigated. For periods much less than the time taken for the wind generated baroclinic Rossby waves to pass over the topography (i.e. 'short' periods), the ocean response is primarily that for a homogeneous ocean and thus strongly modified by topography. For periods much longer than this time (i.e. 'long' periods), the Rossby waves compensate for the effect of topography and the non-topographic Sverdrup balance holds. For the Atlantic at 25°N, the long period limit is
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Bolohan, Noah. "Seasonal Variation in a Predator-Predator-Prey Model." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40899.

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Seasonal shifts in predation habits, from a generalist in the summer to a specialist in the winter, have been documented for the great horned owl (Bulbo virginialis) in the boreal forest. This shift occurs largely due to varying prey availability. There is little study of this switching behaviour in the current literature. Since season length is predicted to change under future climate scenarios, it is important to understand resulting effects on species dynamics. Previous work has been done on a two-species seasonal model for the great horned owl and its focal prey, the snowshoe hare (Lepus a
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6

Ofstad, Endre. "Seasonal Variation in Site Fidelity of Moose (Alces alces)." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-21418.

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Species across many taxa display site fidelity, the tendency to return to previous used areas, particularly during important periods of life, such as at mating and reproduction. In general, it is expected that familiarity to an area is beneficial, and the ability to return to the same area for specific life history events should therefore have a fitness benefit. Efficient wildlife management relies on good knowledge about the tendency of the target species to display site fidelity. Here, I investigated to what extent moose show seasonal variation in site fidelity and to what extent site fideli
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7

Stilwell, W. B. "Origin and seasonal variation of bacterial contamination of milk." Thesis, University of Canterbury. Biological Sciences, 2003. http://hdl.handle.net/10092/6482.

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Type, origin and seasonal variation of psychrotrophic bacteria contaminating milk from a Christchurch milk-processing factory was investigated. Bacteria were monitored in bottled milk over ten days at 7°C. Bacillus licheniformis, B. subtilis, Pseudomonas fluorescens and Ps. putida were identified, with populations exceeding 5x105 CFU/ml after five days. Origin of the bacterial contamination was determined by isolating from milk at various points on the processing line including newly pasteurised, storage tank and pre-filler, as well as filler and bottled milk. Environmental isolations were m
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8

Dantas, Whitney Thomas Edward. "Exploring the Links Between Seasonal Variation and Spider Foraging." UKnowledge, 2014. http://uknowledge.uky.edu/entomology_etds/9.

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According to optimal foraging theory, generalist predators, such as spiders, are thought to feed indiscriminately on prey according to its availability, especially when food is scarce. In contrast, generalists can display selective feeding decisions under regimes of high prey abundance, but few studies have tracked changes in prey choice on a seasonal basis under open field conditions. Additionally, adaptations to surviving winter have been largely ignored in the research of foraging behavior. To elucidate this, I monitored prey availability and collected common forest-dwelling wolf spiders fo
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9

Kitson, Sarah R. "Malaclemys terrapin Hatchlings: Variation in Seasonal Emergence." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1479156414322192.

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10

Matheron, Mike, and Joe Matejka. "Seasonal Variation in Susceptibility of Citrus Rootstocks to Phytophthora." College of Agriculture, University of Arizona (Tucson, AZ), 1986. http://hdl.handle.net/10150/215689.

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Phytophthora parasitica and P. citrophthora are routinely recovered from diseased citrus groves in Arizona. Stem sections were collected monthly from Citrus macrophylla, rough lemon, .sour orange, Cleopatra mandarin, Troyer citrange and Citrus volkameriana. Stem pieces were wounded, inoculated with mycelium of P. parasitica or P. citrophthora, then incubated for 7 days at 21° C in moist chambers. For all tested rootstocks, the smallest cankers were produced on tissue collected in December, January and February, the winter dormancy period for citrus in Arizona. The period of higher susceptibili
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11

DeMuth, Carol Ann 1957. "Seasonal variation in utilization estimates on sideoats grama plants." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/277939.

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The variability in utilization estimates using seasonal production data from clipped sideoats grama plants was studied in southeastern Arizona. Three intensities of clipping at four seasons were studied. Regrowth was also examined. Current growth was highest in October and lowest in June, whereas, standing dead material was lowest in February and highest in June. By April 1986, 39% of peak current growth was already produced. Total peak standing crop occurred in October. The sum of current growth and regrowth from heavy clipping was greater than for plants clipped heavily only in October. The
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12

Crawford, Jared Louis. "Seasonal variation in thyroxine in the American alligator (Alligator mississippiensis)." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/303.

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Male and female alligators ranging from 58 cm to 361 cm in length (N=1054) were captured and their blood was sampled between 9 A.M. and midnight from June 2000 - June 2002 at the Rockefeller Wildlife Refuge in Grand Chenier, LA. Animals were captured in a variety of habitats including marsh, open water, canals, and ponds. Total thyroid hormones were measured by radioimmunoassay. Four criteria were used to evaluate changes in hormone levels: sex, total length, season, and time of day. Thyroxine (T4) varied over a wide range from 0.5 to 57 ng/mL. Triiodothyronine (T3) levels were below the s
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13

Woodhouse, Peter Robert. "Seasonal variation of cardiovascular disease risk factors in older adults." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295672.

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14

Juzak, Damian. "Effect of population characteristics and seasonal variation on anthrax epidemiology." Thesis, Södertörns högskola, Internationell hälsa, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-41631.

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Introduction Anthrax is a disease caused by the spores of Bacillus anthracis and can have a high fatality rate. It is a zoonosis and mostly affecting animals. In this study I want to find out risk factors on population scale for anthrax cases and deaths in humans and animals, and look at the relation of anthrax with weather patterns. Methods I searched for anthrax outbreaks in different countries, mainly yearly reports. I looked at human cases, human deaths, livestock deaths and wildlife deaths. Different risk factors were considered: country size, population characteristics, Human Developmen
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15

Logan, Kathryn G. "Seasonal Variation in Vitamin D Levels in Adolescent Girls in Maine." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/LoganKG2003.pdf.

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16

Tsui, Ka-kit, and 徐家傑. "Seasonal variation of serum prostate-specific antigen levels in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40738292.

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17

Auld, Ryan Richard. "RE-EXAMINING TEMPORAL AND SEASONAL MICROBIAL ACID MINE : DRAINAGE COMMUNITY VARIATION." Thesis, Laurentian University of Sudbury, 2014. https://zone.biblio.laurentian.ca/dspace/handle/10219/2153.

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Acid Mine Drainage (AMD) is characterized by high metal concentrations and an extremely low pH, primarily generated by the microbial oxidation of iron sulfides from mine tailings. Research on the microbial AMD community has largely focused on Bacteria, while little information is known about the Archaeal and Eukaryote members or the seasonal patterns within the communities. Here I examined the Bacterial, Archaeal, and eukaryotic AMD seasonal microbial community, using direct sequencing techniques on AMD samples from the Copper Cliff Tailings AMD site in Sudbury, Ontario, Canada. I found large
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18

Ateljevich, Eli Sava. "Seasonal variation and spatial organization of hydrologic fluxes over complex topography." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/37015.

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19

Theron, Daniel Frederick. "Reproduction and its seasonal variation in the soupfin shark, Galeorhinus galeus." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52431.

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Thesis (MSc)--Stellenbosch University, 2001.<br>ENGLISH ABSTRACT: The soupfin shark, Galeorhinus galeus, is a circum-global shark species of great economical importance. Their reproductive biology is reasonably well understood, but intraspecific differences between global populations necessitate the study o f populations separately. For this study, 70 male and 74 female specimens were collected along the southwestern coast of South Africa between 34°8'S; 18°27'E and 34°24S; 21°25'E. Morphological changes were described and serum steroid hormone concentrations evaluated by enzyme-linked
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20

Van, Zyl Gideon. "Seasonal variation in preeclampsia – timing of conception vs timing of delivery." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71985.

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Thesis (MMed)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Background - Preeclampsia is a multi-system disease characterized by hypertension and proteinuria in pregnant women at greater than 20 weeks of gestational age. It remains one of the leading causes of maternal and foetal mortality and morbidity. While the cause of preeclampsia is essentially unknown, the important theories strongly implicate disturbed placental function in early pregnancy. Additionally, some researchers have investigated the possibility of a seasonal relationship with the incidence of preeclampsia. Differences
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Hibbert, Chris. "Controls on seasonal elemental variation in tropical rivers in Goa, India." Thesis, Birkbeck (University of London), 2017. http://bbktheses.da.ulcc.ac.uk/275/.

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This study focuses upon chemical variation in fluvial discharge over a 15 month period (May 2007 – July 2008) in a sub-tropical, monsoonal climatic regime in western India. Here, highly seasonal rivers rising at the Western Ghats escarpment discharge into the Arabian Sea. The Ghats present a topographical barrier to the SW monsoon, and thus generate one of the world’s highest orographic gradients. Two river basins were selected for this study, the Zuari and the Chapora, both characterised by high seasonal precipitation and run-off, with c. 85% occurring during the monsoon months (June – Septem
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22

Wilding, Nicholas. "Seasonal rainfall regime modulates genetic variation in the moss Pseudocrossidium crinitum." Bachelor's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/26003.

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Patterns of genetic variation, resulting from Pliocene-Pleistocene climate shifts have been largely documented for species from Europe. However, little is known from Africa and especially South Africa, where climate shifts have often been invoked to explain the amazingly high diversity of the Cape Floristic Region. An analysis of cpDNA and nDNA sequence variation for 65 populations of the moss Pseudocrossidium crinitum across South Africa revealed the presence of a phylogeographic break corresponding to the split between the winter-rainfall zone (WRZ) and the all-year-(ARZ) and summer-rainfall
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23

Hart, Adam Michael. "Seasonal Variation in Whole Stream Metabolism across Varying Land Use Types." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23256.

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Historically, whole stream open channel metabolism has been measured over short periods in conjunction with nutrient injections to assess nutrient dynamics within streams. The purpose of my study was to understand the seasonal changes in metabolism within and among streams as well as the impacts of different land use. This was addressed by monitoring nine different watersheds in the Little Tennessee River watershed in southwestern North Carolina.  The nine study watersheds were selected to represent a gradient of forested, agricultural, and developed land use / land cover types. Data loggers w
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Ribeiro, Emanuel Ferreira. "Seasonal variation in foraging habitat preferences in Lesser Kestrel Falco naumanni." Master's thesis, Universidade de Aveiro, 2007. http://hdl.handle.net/10773/720.

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Conhecer as preferências de habitat de uma espécie é crucial para a definição e implementação de medidas com objectivos de conservação. Neste estudo analisamos a preferência de habitat de caça de uma espécie ameaçada, e a maneira como estas preferências se alteram ao longo da época de reprodução. A disponibilidade de cada tipo de habitat varia consoante as actividades agrícolas, como sementeiras, aragem ou ceifas. Os resultados evidenciam que esta espécie selecciona diferentes tipos de habitat de acordo em cada fase do ciclo reprodutor. No início da época de reprodução, a espécie, pref
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Tsui, Ka-kit. "Seasonal variation of serum prostate-specific antigen levels in Hong Kong." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40738292.

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Baytak, Derya Sofuoğlu Sait C. "Seasonal Variation In Disinfection By-Product Concentrations In İzmir Drinking Water/." [s.l.]: [s.n.], 2007. http://library.iyte.edu.tr/tezler/master/cevremuh/T000655.pdf.

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27

Sirniö, K. (Kai). "Distal radius fractures:epidemiology, seasonal variation and results of palmar plate fixation." Doctoral thesis, Oulun yliopisto, 2019. http://urn.fi/urn:isbn:9789526223506.

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Abstract Distal radius fractures (DRFs) are the most commonly encountered fall-related fracture in clinical practice. Recognised as a typical fragility fractures, the ageing of the population may increase the occurrence of DRFs in the near future. The aims of this thesis were (I) to describe the epidemiology of DRFs in a cohort of adult patients in the city of Oulu during the year 2008 and to study changes in the incidence of DRFs during the last decades in Finland and other northern countries and the relationship between slippery conditions during the winter and the incidence of DRFs, (II) to
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28

Jia, Yanli. "Seasonal and interannual variabilities in a model of the equatorial Pacific Ocean." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236325.

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29

Needham, Karen Merrie. "Specific and seasonal variation in survival and sodium balance at low pH in five species of waterboatmen (Hemiptera: Corixidae) ?" Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29632.

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Sodium balance and mortality rates were examined in five species of adult waterboatmen (Hemiptera: Corixidae) exposed to neutral and low pH waters. The five species were chosen to reflect a wide range of pH conditions in waters where they naturally occur. Cenocorixa bifida and C. expleta normally inhabit high pH waters, whereas C. blaisdelli and Hesperocorixa atopodonta can be found most often at neutral pH. Sigara omani occur in acidic waters. Haemolymph [Na], whole-body [Na], and sodium influx rates were recorded during exposures of 6-9 days at pH 7.0, 4.5, and 3.0. C. blaisdelli and H. ato
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Reneerkens, Jeroen Willem Hendrik. "Functional aspects of seasonal variation in preen wax composition of sandpipers (Scolopacidae)." [S.l. : [Groningen : s.n.] ; University Library Groningen] [Host], 2006. http://irs.ub.rug.nl/ppn/298826216.

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31

Hellström, Anna. "Uptake of airborne organic pollutants in pine needles : geographical and seasonal variation /." Uppsala : Dept. of Environmental Assassment, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/a402.pdf.

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Kirby, Peter C. "The seasonal variation of soil erosion and soil erodibility in southwestern Quebec /." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65361.

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33

Okus, E. "Seasonal variation in phytoplankton, nutrients and primary productivity at the Mumbles, Swansea." Thesis, Swansea University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638362.

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The main object of this investigation was to study the occurrence and distribution of the phytoplankton off the Mumbles, Swansea Bay and record changes in the physical and chemical factors in this area during the period 1990-1992. The data obtained will serve as a basis of comparison with the situation after the planned modification of the sewage outfall in Swansea Bay. Changes in nutrients (N, P, Si), salinity, temperature and rainfall, together with numbers and species composition of the phytoplankton were monitored fortnightly. Measurements were made of pigment concentrations and primary pr
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Duong, Thi Thuy, Thi Nguyet Vu, Thi Phuong Quynh Le, Tu Cuong Ho, Trung Kien Hoang, and Dinh Kim Dang. "Seasonal variation of phytoplankton assemblage in Hoa Binh reservoir, north of Vietnam." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-176884.

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Algae provide an important role in aquatic food web and biochemical cycles in aquatic systems. They are affected by different environmental factors, such as pH, light, temperature and nutrients. This study aimed to describe the composition abundance and density of phytoplankton in the Hoa Binh reservoir during period from March to December 2011. Phytoplankton samples were collected monthly at four sampling stations. Result obtained showed that 6 phytoplankton classes were recorded: Cyanobacteria, Chlorophyceae, Bacillariophyceae, Euglenophyceae, Dinophyceae and Cryptophyceae. Bacillariophyceae
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Werners, Ursula. "Seasonal variation in mood, well-being and cognition in an elderly sample." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615930.

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Pathak, Pratik. "SEASONAL VARIATION IN TEMPERATURE, PRECIPITATION AND STREAMFLOW ACROSS THE MIDWESTERN UNITED STATES." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/theses/2028.

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A great deal of attention has been given to global climate change by the hydrologic community. Temperature, precipitation and streamflow trend analysis, on different spatial and temporal scales, is important in understanding the impact of climate change. Midwest region is the heartland of agriculture production in U.S., and change in hydrologic variables may affect both quantity and quality of production. In the study, mean, maximum and minimum temperature along with mean precipitation for 106 climate divisions in the Midwest were analyzed to test the existence of monotonic trend and shift cha
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Calcagno, Joseph. "Seasonal and Anatomical Variation in Compact Bone Remodeling in the Adult Sheep." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/652.

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ABSTRACT SEASONAL AND ANATOMICAL VARIATION IN COMPACT BONE REMODELING IN THE ADULT SHEEP Joseph Calcagno In order to determine whether ovine compact bone is suitable for study of osteoporosis, the remodeling parameters of the untreated animal must be fully characterized. Ovine compact bone is an attractive large animal model due to its similarities in size and bone remodeling to humans. However hormonal, exercise, and dietary changes due to seasonal changes can cause treatment effects to be hidden or superimposed on existing changes in the bone. In order to determine if any seasonal or anatomi
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Ågren, Anneli. "Seasonal variation and landscape regulation of dissolved organic carbon concentrations and character in Swedish boreal streams." Doctoral thesis, Umeå universitet, Ekologi, miljö och geovetenskap, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1374.

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The seasonal variation and landscape regulation of dissolved organic carbon (DOC) concentrations in streams have been studied in two watersheds in the boreal zone. The seasonal variation was found to be highly correlated to variations in runoff. An increase in runoff was always accompanied with an increase in DOC concentration. However, there were indications that the TOC concentration was restricted by the soil TOC pool during snowmelt. The main factors affecting DOC exports varied between seasons. During winter baseflow the spatial variation in DOC exports was strongly influenced by wetland
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Ahmed, Rafiq. "Seasonal Variation of Inorganic Nutrients (DSi, DIN and DIP) Concentration in Swedish River." Thesis, Linköping University, Department of Water and Environmental Studies, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-10387.

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<p>Rivers have been playing most important role as fresh water source and medium of nutrient transportation from terrestrial to aquatic ecosystem. Inorganic form of nutrients (DSi, DIN and DIP) are plant available mostly control the productivity of aquatic ecosystem. Transfer of these nutrients in higher concentrations cause harmful eutrophication in receiving water body.</p><p>Study of dissolved inorganic nutrients concentrations in 12 Swedish rivers of different basin characteristics demonstrated both similar and varying behaviour from river to river and from season to season depending on ca
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Härkönen, L. (Laura). "Seasonal variation in the life histories of a viviparous ectoparasite, the deer ked." Doctoral thesis, Oulun yliopisto, 2012. http://urn.fi/urn:isbn:9789514298967.

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Abstract The life histories of ectoparasites are shaped by both host and off-host environment. A suitable host is primarily needed during reproduction, whereas juvenile stages outside the host are directly exposed to environmental variability. Viviparity, i.e. the development of an embryo inside the body of the mother resulting in large offspring size, increases offspring survival. The production of large offspring has its consequences in terms of high variation in offspring age and in the environment that each young individual will face. I used a viviparous ectoparasite, the deer ked (Lipopte
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Goslan, Emma Harriet. "Natural organic matter character and reactivity : assessing seasonal variation in a moorland water." Thesis, Cranfield University, 2003. http://dspace.lib.cranfield.ac.uk/handle/1826/101.

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Natural organic matter (NOM) is described as an intricate mixture of organic compounds that occurs universally in ground and surface waters. After treatment for potable use, there is NOM remaining in the water that reacts with the chlorine used for disinfection to form disinfection by-products (DBPs). Some of the DBPs, trihalomethanes (THMs) are regulated. Several water treatment works (WTWs) in the Yorkshire Water and United Utilities (previously North West Water) region in England have recently experienced difficulty in meeting THM limits (100 µg L-1) in their finished drinking water at cert
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Saalfeld, Sarah Therese Ditchkoff Stephen S. "Seasonal variation in sex ratios and survival rates of white-tailed deer fawns." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/master's/SAALFELD_SARAH_36.pdf.

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Obiri-Danso, Kwasi. "Seasonal variation of indicator and pathogenic bacteria in coastal and inland bathing waters." Thesis, Lancaster University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301090.

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Eriksson, Linnéa. "PSA testing, seasonal variation and relations to media in terms of prostate cancer." Thesis, Uppsala universitet, Tillämpad matematik och statistik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-377562.

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Stålhandske, Sandra. "Spring Phenology of Butterflies : The role of seasonal variation in life-cycle regulation." Doctoral thesis, Stockholms universitet, Zoologiska institutionen, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-132278.

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Animals and plants in temperate regions must adapt their life cycle to pronounced seasonal variation. The research effort that has gone into studying these cyclical life history events, or phenological traits, has increased greatly in recent decades. As phenological traits are often correlated to temperature, they are relevant to study in terms of understanding the effect of short term environmental variation as well as long term climate change. Because of this, changes in phenology are the most obvious and among the most commonly reported responses to climate change. Moreover, phenological tr
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Mohamud, Yussuf. "Seasonal Variation in the Redox Zones and Biogeochemical Processes within the Constructed Wetland." Wright State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=wright1187103877.

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Thrush, Hood Mariah A. "Seasonal Variation of Chemistry, Hydrology, and Macroinvertebrate Communities within Acid Mine Drainage Streams." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1545254097494315.

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48

Sá, Fausto Joaquim Ribeiro. "Fish microbiota, the influence of seasonal variation and contamination on cultivable bacterial species." Master's thesis, Universidade de Aveiro, 2018. http://hdl.handle.net/10773/22787.

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Mestrado em Ecologia Aplicada<br>The study of microbiota present in organisms revealed that it has as extremely relevant role for some key biological functions such as immunity and nutrition. Such evidence originated, in the most recent years, an increase in the number of studies focusing the interaction between microbiota and the host organisms to further enlighten the underlying mechanisms of these interactions. Despite the growing interest and knowledge in this area, much is still unknown, such as the role of the environment in the microbiota composition. This can be of extreme importance w
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Kirk, Andrew J. "Seasonal Variation of Fish and Macroinvertebrate Biomass Spectra in Southern West Virginia Streams." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4228.

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The biomass size spectrum - the power-law scaling relationship between average individual size and total biomass - has often been studied in lake and marine ecosystems, but rarely in lotic systems. The objective of this study was to test for characteristic biomass spectra in small temperate streams. Seasonal fish and macroinvertebrate data, including population abundance and biomass estimates, were collected in three wadeable, southern West Virginia streams from October 2013 to May 2015. Fish abundances were estimated with 3-pass electrofishing (depletion) surveys and individuals were weighed
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50

Cox, Daniel T. C. "Seasonal mass variation as a life history trait in West African savannah birds." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/3581.

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Seasonality influences life history through its effect on the availability of essential resources, with birds timing breeding to occur during peak food availability. Due to density-dependence, investment in breeding is determined largely by the seasonality of food availability, with an increased investment being traded-off against adult survival. A bird's mass acts as an index of a species' foraging environment, because a bird bases its foraging decisions on a trade-off between the risk of predation and the risk of starvation. Under constant predation risk a bird increases its mass as insuranc
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