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Artículos de revistas sobre el tema "Diel cycle"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Livingstone, David M. "The diel oxygen cycle in three subalpine Swiss streams." Archiv für Hydrobiologie 120, no. 4 (1991): 457–79. http://dx.doi.org/10.1127/archiv-hydrobiol/120/1991/457.

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2

Thomas, H., S. E. Craig, B. J. W. Greenan, et al. "Direct observations of diel biological CO<sub>2</sub> fixation on the Scotian Shelf, northwestern Atlantic Ocean." Biogeosciences 9, no. 6 (2012): 2301–9. http://dx.doi.org/10.5194/bg-9-2301-2012.

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Abstract. Much of the variability in the surface ocean's carbon cycle can be attributed to the availability of sunlight, triggering surface heat flux and photosynthesis, which in turn regulate the biogeochemical cycling of carbon over a wide range of time scales. The critical processes of this carbon cycle regulation, occurring at time scales of a day or less, however, have undergone few investigations, most of which have been limited to time spans of several days to months. Optical methods have helped to infer short-term biological variability, but complementing investigations of the oceanic

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3

Ball, Becky A., and Ross A. Virginia. "Controls on diel soil CO2 flux across moisture gradients in a polar desert." Antarctic Science 27, no. 6 (2015): 527–34. http://dx.doi.org/10.1017/s0954102015000255.

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AbstractThe McMurdo Dry Valleys of Antarctica are a climate-sensitive ecosystem, where future projected climate warming will increase liquid water availability to release soil biology from physical limitations and alter ecosystem processes. For example, many studies have shown that CO2 flux, an important aspect of the carbon cycle, is controlled by temperature and moisture, which often overwhelm biotic contributions in desert ecosystems. However, these studies used either single-point measurements during peak times of biological activity or diel cycles at individual locations. Here, we present

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4

Thomas, H., S. E. Craig, B. J. W. Greenan, et al. "Direct observations of diel biological CO<sub>2</sub> fixation in the oceans." Biogeosciences Discussions 9, no. 2 (2012): 2153–68. http://dx.doi.org/10.5194/bgd-9-2153-2012.

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Abstract. Much of the variability in the surface ocean's carbon cycle can be attributed to the availability of sunlight, through processes such as heat fluxes and photosynthesis, which regulate over a wide range of time scales. The critical processes occurring on timescales of a day or less, however, have undergone few investigations, and most of these have been limited to a time span of several days to months, or exceptionally, for longer periods. Optical methods have helped to infer short-term biological variability, however corresponding investigations of the oceanic CO2 system are lacking.

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5

Fleming, Sean W., Peter Hudson, and Edward J. Quilty. "Interpreting nonstationary environmental cycles as amplitude-modulated (AM) signalsA paper submitted to the Journal of Environmental Engineering and Science." Canadian Journal of Civil Engineering 36, no. 4 (2009): 720–31. http://dx.doi.org/10.1139/s08-051.

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Inspired by an analogy to AM radio signals, amplitude modulation (AM) is proposed here as a useful view of nonstationary environmental periodicities, and applied to hydrologic and air quality datasets. Both example time series considered exhibit seasonally evolving diel cycles, with large (small) daily cycle amplitudes in summer (winter). The carrier wave is taken to be a sinusoidal daily cycle; this is multiplied by an information signal consisting of a sinusoidal annual cycle, forming an envelope to the diel variations. Our results suggest that amplitude modulation may offer a novel, compact

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6

Carniatto, Natália, Rosemara Fugi, Geuza Cantanhêde, Éder André Gubiani, and Norma Segatti Hahn. "Effects of flooding regime and diel cycle on diet of a small sized fish associated to macrophytes." Acta Limnologica Brasiliensia 24, no. 4 (2013): 363–72. http://dx.doi.org/10.1590/s2179-975x2013005000007.

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AIM: In this paper we assessed the effects of flooding (low and high water period) on the feeding activity and diet composition of Serrapinus notomelas in patches of the macrophyte Eichhornia azurea in a shallow floodplain lake (upper Paraná River Floodplain, Brazil). We also assessed the variations of diet composition and feeding activity along the diel cycle. METHODS: Traps were used to catch the fish inside of macrophyte patches monthly from June/2007 to May/2008. A total of 1038 stomachs were examined. We assessed the feeding activity with the mean stomach fullness degree method. To summar

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7

Watras, Carl J., Kenneth A. Morrison, Noah R. Lottig, and Timothy K. Kratz. "Comparing the diel cycles of dissolved organic matter fluorescence in a clear-water and two dark-water Wisconsin lakes: potential insights into lake metabolism." Canadian Journal of Fisheries and Aquatic Sciences 73, no. 1 (2016): 65–75. http://dx.doi.org/10.1139/cjfas-2015-0172.

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The cycling of organic carbon is fundamental to aquatic ecosystems, reflecting processes that extend from terrestrial watersheds to fish. Here, we use embedded fluorescence sensors that sample at high frequency to investigate the daily dynamics of a proxy for the major pool of organic carbon (chromophoric dissolved organic matter, CDOM) in a clear-water Wisconsin lake (∼3 mg C·L−1). We compare the diel CDOM cycle in this lake with cycles observed previously in two dark-water lakes (10 to 20 mg C·L−1). Despite differences in DOM quality and quantity, diel fluorescence cycles were evident in the

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8

Briggs, Nathan, Kristinn Guðmundsson, Ivona Cetinić, et al. "A multi-method autonomous assessment of primary productivity and export efficiency in the springtime North Atlantic." Biogeosciences 15, no. 14 (2018): 4515–32. http://dx.doi.org/10.5194/bg-15-4515-2018.

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Abstract. Fixation of organic carbon by phytoplankton is the foundation of nearly all open-ocean ecosystems and a critical part of the global carbon cycle. But the quantification and validation of ocean primary productivity at large scale remains a major challenge due to limited coverage of ship-based measurements and the difficulty of validating diverse measurement techniques. Accurate primary productivity measurements from autonomous platforms would be highly desirable due to much greater potential coverage. In pursuit of this goal we estimate gross primary productivity over 2 months in the

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9

Liu, Riyue, Yaxin Liu, Yue Chen, Yuanchao Zhan, and Qinglu Zeng. "Cyanobacterial viruses exhibit diurnal rhythms during infection." Proceedings of the National Academy of Sciences 116, no. 28 (2019): 14077–82. http://dx.doi.org/10.1073/pnas.1819689116.

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As an adaptation to the daily light–dark (diel) cycle, cyanobacteria exhibit diurnal rhythms of gene expression and cell cycle. The light–dark cycle also affects the life cycle of viruses (cyanophages) that infect the unicellular picocyanobacteriaProchlorococcusandSynechococcus, which are the major primary producers in the oceans. For example, the adsorption of some cyanophages to the host cells depends on light, and the burst sizes of cyanophages are positively correlated to the length of light exposure during infection. Recent metatranscriptomic studies revealed transcriptional rhythms of fi

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10

Forget, Marie-Hélène, Richard Carignan, and Christiane Hudon. "Influence of diel cycles of respiration, chlorophyll, and photosynthetic parameters on the summer metabolic balance of temperate lakes and rivers." Canadian Journal of Fisheries and Aquatic Sciences 66, no. 7 (2009): 1048–58. http://dx.doi.org/10.1139/f09-058.

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Primary production, planktonic respiration, bacterial abundance, and chlorophyll a were measured in the epilimnion of two Canadian Shield lakes and in two large rivers to establish their metabolic balance and to contrast oligotrophic and oligo-mesotrophic systems. Pronounced diel respiration cycles were observed in all systems, with a minimum in the morning and a maximum in the evening. Respiration was positively correlated with water temperature, incident light, and chlorophyll a concentration. Diel cycles of chlorophyll a were discernible in both rivers and in the oligo-mesotrophic lake. Our

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11

Levy, David A. "Reciprocal Diel Vertical Migration Behavior in Planktivores and Zooplankton in British Columbia Lakes." Canadian Journal of Fisheries and Aquatic Sciences 47, no. 9 (1990): 1755–64. http://dx.doi.org/10.1139/f90-199.

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Simultaneous comparison of planktivore and crustacean zooplankton distribution patterns in a set of British Columbia lakes suggested coupled diel vertical migration behavior in the two adjacent trophic levels. In lakes where juvenile sockeye salmon performed diel vertical migrations, most zooplankton were non-migratory and concentrated in shallow surface waters over the diel cycle. In contrast, in one lake where pelagic threespine sticklebacks were present, and where juvenile sockeye diel vertical migrations were periodically reversed, most zooplankton undertook diel vertical migrations. The p

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12

Dall'Olmo, G., T. K. Westberry, M. J. Behrenfeld, et al. "Inferring phytoplankton carbon and eco-physiological rates from diel cycles of spectral particulate beam-attenuation coefficient." Biogeosciences Discussions 8, no. 2 (2011): 3009–50. http://dx.doi.org/10.5194/bgd-8-3009-2011.

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Abstract. The diurnal fluctuations in solar irradiance impose a fundamental frequency on ocean biogeochemistry. Observations of the ocean carbon cycle at these frequencies are rare, but could be considerably expanded by measuring and interpreting the inherent optical properties. A method is presented to analyze diel cycles in particulate beam-attenuation coefficient (cp) measured at multiple wavelengths. The method is based on fitting observations with a size-structured population and optical model to infer the particle size distribution and physiologically relevant parameters of the cells res

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13

Sweeney, Colm. "The diel carbon cycle of the Biosphere 2 ocean." Ecological Engineering 13, no. 1-4 (1999): 235–47. http://dx.doi.org/10.1016/s0925-8574(98)00101-3.

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14

Kopec, B. G., A. M. Lauder, E. S. Posmentier, and X. Feng. "The diel cycle of water vapor in west Greenland." Journal of Geophysical Research: Atmospheres 119, no. 15 (2014): 9386–99. http://dx.doi.org/10.1002/2014jd021859.

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15

Orlowski, Andrzej. "Experimental verification of the acoustic characteristics of the clupeoid diel cycle in the Baltic." ICES Journal of Marine Science 62, no. 6 (2005): 1180–90. http://dx.doi.org/10.1016/j.icesjms.2005.02.013.

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Abstract This paper describes the results of a short-term experiment using measurements of sv from the diel, spatial, clupeoid distribution in the southern Baltic. The aim of the experiment was to verify fish-behaviour characteristics measured over the period from 1995 to 2001. It was also intended to estimate the dynamics of fish behaviour over one separate diel cycle. The studies were based on a 24 h continuous integration of fish echoes using an EY500 echosounder at 38 kHz. Measurements were carried out by RV “Baltica” travelling along the sides of a square of 4 nautical miles at a constant

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16

Dall'Olmo, G., E. Boss, M. J. Behrenfeld, et al. "Inferring phytoplankton carbon and eco-physiological rates from diel cycles of spectral particulate beam-attenuation coefficient." Biogeosciences 8, no. 11 (2011): 3423–39. http://dx.doi.org/10.5194/bg-8-3423-2011.

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Abstract. The diurnal fluctuations in solar irradiance impose a fundamental frequency on ocean biogeochemistry. Observations of the ocean carbon cycle at these frequencies are rare, but could be considerably expanded by measuring and interpreting the inherent optical properties. A method is presented to analyze diel cycles in particulate beam-attenuation coefficient (cp) measured at multiple wavelengths. The method is based on fitting observations with a size-structured population model coupled to an optical model to infer the particle size distribution and physiologically relevant parameters

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17

Shin, C. N., G.-Y. Rhee, and J. Chen. "Phosphate Requirement, Photosynthesis, and Diel Cell Cycle of Scenedesmus obliquas Under Fluctuating Light." Canadian Journal of Fisheries and Aquatic Sciences 44, no. 10 (1987): 1753–58. http://dx.doi.org/10.1139/f87-214.

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The effect of light fluctuation (0.06 Hz) on P requirement, photosynthesis, and the diel cell-division cycle was investigated in Scenedesmus obliquus in a chemostat under a 12 h day: 12 h night cycle. P requirement was much less under oscillating than under constant daylight of the same photon flux density. However, cell chlorophyll a was significantly higher, indicating an increased N requirement. There was little difference in photosynthetic efficiency (the slope of the photosynthesis–light regression) between oscillating and constant light, but photosynthetic capacity was higher in fluctuat

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18

Bahamon, Nixon, Francesc Sardà, and Jacopo Aguzzi. "Fuzzy diel patterns in catchability of deep-water species on the continental margin." ICES Journal of Marine Science 66, no. 10 (2009): 2211–18. http://dx.doi.org/10.1093/icesjms/fsp190.

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Abstract Bahamon, N., Sardà, F., and Aguzzi, J. 2009. Fuzzy diel patterns in catchability of deep-water species on the continental margin. – ICES Journal of Marine Science, 66: 2211–2218. Exploited deep-water fish communities on continental margins are poorly understood in terms of variations in species composition and abundance by depth and season as a response to diel changes in light intensity and length of photoperiod. Innovative fuzzy clustering and traditional agglomerative hierarchical clustering methods were applied to data from bottom trawls collected continuously for 4 d in October a

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19

Hawes, Ian, and Paul Brazier. "Freshwater stream ecosystems of James Ross Island, Antarctica." Antarctic Science 3, no. 3 (1991): 265–71. http://dx.doi.org/10.1017/s0954102091000329.

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The freshwater streams of James Ross Island share many of the features common to other Antarctic streams. There is a diel variation in temperature and discharge, which follows the daily insolation cycle; catchments are barren; stream vegetation is predominantly algal, comprising mat-forming cyanobacteria and filamentous chlorophytes; and physical factors, particularly turbidity and bed stability are important in determining biomass and composition of algal assemblages. Nutrient concentrations vary from stream to stream and over a diel cycle, with minimum dissolved N in late afternoon. Biomass

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20

Brinton, Cameron Patrick, and Mary Carla Curran. "Tidal and diel movement patterns of the Atlantic stingray (Dasyatis sabina) along a stream-order gradient." Marine and Freshwater Research 68, no. 9 (2017): 1716. http://dx.doi.org/10.1071/mf16073.

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The behaviour of the Atlantic stingray (Dasyatis sabina) is affected by environmental cues, including time of day and tide. The purpose of the present study was to determine whether these cycles and differences in creek geomorphology affected presence and movement patterns of Atlantic stingrays near Savannah, GA, USA. Forty-five stingrays were tagged with Vemco coded-acoustic transmitters and passively tracked in two creek systems between December 2012 and December 2014. The geomorphology of the creeks was classified using the Horton stream-order concept, with the smallest tributaries assigned

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21

Holtzendorff, J., F. Partensky, S. Jacquet, et al. "Diel Expression of Cell Cycle-Related Genes in Synchronized Cultures of Prochlorococcus sp. Strain PCC 9511." Journal of Bacteriology 183, no. 3 (2001): 915–20. http://dx.doi.org/10.1128/jb.183.3.915-920.2001.

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ABSTRACT The cell cycle of the chlorophyll b-possessing marine cyanobacterium Prochlorococcus is highly synchronized under natural conditions. To understand the underlying molecular mechanisms we cloned and sequenced dnaA and ftsZ, two key cell cycle-associated genes, and studied their expression. An axenic culture of Prochlorococcus sp. strain PCC 9511 was grown in a turbidostat with a 12 h–12 h light-dark cycle for 2 weeks. During the light periods, a dynamic light regimen was used in order to simulate the natural conditions found in the upper layers of the world's oceans. This treatment res

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22

Levy, David A. "Acoustic Analysis of Diel Vertical Migration Behavior of Mysis relicta and Kokanee (Oncorhynchus nerka) within Okanagan Lake, British Columbia." Canadian Journal of Fisheries and Aquatic Sciences 48, no. 1 (1991): 67–72. http://dx.doi.org/10.1139/f91-010.

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Dual-beam acoustic surveys of Okanagan Lake suggested active diel vertical migrations of Mysis relicta and kokanee (Oncorhynchus nerka) within the pelagic zone. Mysis relicta were situated between 90–150 m during the day and migrated upwards into the thermocline region of the water column at night. Two groups of kokanee targets were detected. The first undertook a diel vertical migration and coalesced at dusk with a second, shallow-oriented group of targets. Daytime target strength estimates taken while the two groups were vertically segregated in the water column suggested an 8–12 db lower ta

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23

Raick, Xavier, Pierre Collet, Under The Pole Consortium, David Lecchini, Frédéric Bertucci, and Eric Parmentier. "Diel cycle of two recurrent fish sounds from mesophotic coral reefs." Scientia Marina 87, no. 4 (2023): e078. http://dx.doi.org/10.3989/scimar.05395.078.

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Mesophotic coral ecosystems (MCEs) are the deepest part of tropical coral reefs, ranging from depths of 30 to over 170 m. Despite their significance, MCEs remain largely unexplored due to the challenges associated with accessing these depths. However, the application of passive acoustic monitoring methods (PAM) is a suitable approach for studying fish communities within these unique habitats. In French Polynesia, recent PAM studies have unveiled a higher occurrence of frequency-modulated fish sounds in MCEs than in shallower reef environments. This study aims to further enhance our understandi

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24

Matallana-Surget, Sabine, Augustin Geron, Corentin Decroo, and Ruddy Wattiez. "Diel Cycle Proteomics: Illuminating Molecular Dynamics in Purple Bacteria for Optimized Biotechnological Applications." International Journal of Molecular Sciences 25, no. 5 (2024): 2934. http://dx.doi.org/10.3390/ijms25052934.

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Circadian rhythms, characterized by approximately 24 h cycles, play a pivotal role in enabling various organisms to synchronize their biological activities with daily variations. While ubiquitous in Eukaryotes, circadian clocks remain exclusively characterized in Cyanobacteria among Prokaryotes. These rhythms are regulated by a core oscillator, which is controlled by a cluster of three genes: kaiA, kaiB, and kaiC. Interestingly, recent studies revealed rhythmic activities, potentially tied to a circadian clock, in other Prokaryotes, including purple bacteria such as Rhodospirillum rubrum, know

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25

Reiman, Jeremy, and Y. Xu. "Diel Variability of pCO2 and CO2 Outgassing from the Lower Mississippi River: Implications for Riverine CO2 Outgassing Estimation." Water 11, no. 1 (2018): 43. http://dx.doi.org/10.3390/w11010043.

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Carbon dioxide (CO2) outgassing from river surface waters is an important component of the global carbon cycle currently not well constrained. To test the hypothesis that riverine partial pressure of CO2 (pCO2) and CO2 outgassing rates differ between daylight and darkness, we conducted in-situ pCO2 and ambient water measurements over four 24-h periods in the spring and summer of 2018 in the Lower Mississippi River under varying flow regimes. We hypothesized that diel pCO2 variation will correlate inversely with solar radiation due to light-induced photosynthesis. Despite differing ambient cond

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26

Jamet, Jean Louis, Pierre Gres, Nicole Lair, and Gerard Lasserre. "Diel feeding cycle of roach (Rutilus rutilus, L.) in eutrophic Lake Aydat (Massif Central, France)." Archiv für Hydrobiologie 118, no. 3 (1990): 371–82. http://dx.doi.org/10.1127/archiv-hydrobiol/118/1990/371.

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27

Nalewajko, C., and H. Godmaire. "Extracellular products of Myriophyllum spicatum L. as a function of growth phase and diel cycle." Archiv für Hydrobiologie 127, no. 3 (1993): 345–56. http://dx.doi.org/10.1127/archiv-hydrobiol/127/1993/345.

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28

Baumann-Pickering, Simone, Marie A. Roch, Sean M. Wiggins, Hans-Ulrich Schnitzler, and John A. Hildebrand. "Acoustic behavior of melon-headed whales varies on a diel cycle." Behavioral Ecology and Sociobiology 69, no. 9 (2015): 1553–63. http://dx.doi.org/10.1007/s00265-015-1967-0.

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29

Benoit-Bird, Kelly J., Whitlow W. L. Au, and Daniel W. Wisdoma. "Nocturnal light and lunar cycle effects on diel migration of micronekton." Limnology and Oceanography 54, no. 5 (2009): 1789–800. http://dx.doi.org/10.4319/lo.2009.54.5.1789.

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30

Géron, Augustin, Johannes Werner, Philippe Lebaron, Ruddy Wattiez, and Sabine Matallana-Surget. "Diel Protein Regulation of Marine Picoplanktonic Communities Assessed by Metaproteomics." Microorganisms 9, no. 12 (2021): 2621. http://dx.doi.org/10.3390/microorganisms9122621.

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The diel cycle is of enormous biological importance in that it imposes temporal structure on ecosystem productivity. In the world’s oceans, microorganisms form complex communities that carry out about half of photosynthesis and the bulk of life-sustaining nutrient cycling. How the functioning of microbial communities is impacted by day and night periods in surface seawater remains to be elucidated. In this study, we compared the day and night metaproteomes of the free-living and the particle-attached bacterial fractions from picoplanktonic communities sampled from the northwest Mediterranean S

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31

Ceusters, Nathalie, Stijn Luca, Regina Feil, et al. "Hierarchical clustering reveals unique features in the diel dynamics of metabolites in the CAM orchid Phalaenopsis." Journal of Experimental Botany 70, no. 12 (2019): 3269–81. http://dx.doi.org/10.1093/jxb/erz170.

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Abstract Crassulacean acid metabolism (CAM) is a major adaptation of photosynthesis that involves temporally separated phases of CO2 fixation and accumulation of organic acids at night, followed by decarboxylation and refixation of CO2 by the classical C3 pathway during the day. Transitory reserves such as soluble sugars or starch are degraded at night to provide the phosphoenolpyruvate (PEP) and energy needed for initial carboxylation by PEP carboxylase. The primary photosynthetic pathways in CAM species are well known, but their integration with other pathways of central C metabolism during

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32

Connell, PE, F. Ribalet, EV Armbrust, A. White, and DA Caron. "Diel oscillations in the feeding activity of heterotrophic and mixotrophic nanoplankton in the North Pacific Subtropical Gyre." Aquatic Microbial Ecology 85 (December 3, 2020): 167–81. http://dx.doi.org/10.3354/ame01950.

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Daily oscillations in photosynthetically active radiation strongly influence the timing of metabolic processes in picocyanobacteria, but it is less clear how the light-dark cycle affects the activities of their consumers. We investigated the relationship between marine picocyanobacteria and nanoplanktonic consumers throughout the diel cycle to determine whether heterotrophic and mixotrophic protists (algae with phagotrophic ability) display significant periodicity in grazing pressure. Carbon biomass of Prochlorococcus and Synechococcus was estimated continuously from abundances and cell size m

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Goulet, R. R., and F. R. Pick. "Diel changes in iron concentrations in surface-flow constructed wetlands." Water Science and Technology 44, no. 11-12 (2001): 421–26. http://dx.doi.org/10.2166/wst.2001.0861.

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Diel changes in Fe concentrations were examined from spring to late fall at two surface-flow wetlands. The highest concentrations of ferrous, dissolved and total Fe were measured at night in the littoral zone, when oxygen and pH were low. The lowest Fe concentrations were measured during the day when oxygen and pH were highest. The amplitude of change over the day-night cycle was greatest in July and lowest in May and October. These diel changes were also observed at the outlet of both wetlands. Overall, O2 and pH explained 60% of the observed seasonal and diel variation in water Fe (R2=0.60,

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Thomaz, Sidinei M., Alex Enrich-Prast, José F. Gonçalves Jr., Anderson M. dos Santos, and Francisco A. Esteves. "Metabolism and Gaseous Exchanges in Two Coastal Lagoons from Rio de Janeiro with Distinct Limnological Characteristics." Brazilian Archives of Biology and Technology 44, no. 4 (2001): 433–38. http://dx.doi.org/10.1590/s1516-89132001000400015.

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The global metabolism and exchange of gases with the atmosphere were measured during a diel cycle in two tropical coastal lagoons, using the curves of carbon dioxide and dissolved oxygen. Heterotrophic metabolism (net CO2 production and net O2 consumption) was observed in a black water lagoon (Comprida), and autotrophic metabolism (net O2 production and net CO2 consumption) in a clear water lagoon (Imboassica). These differences were attributed to the limnological characteristics of both ecosystems, especially to dissolved organic carbon and the attenuation coefficient of light, which are much

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35

Kirchner, James W., Sarah E. Godsey, Madeline Solomon, Randall Osterhuber, Joseph R. McConnell, and Daniele Penna. "The pulse of a montane ecosystem: coupling between daily cycles in solar flux, snowmelt, transpiration, groundwater, and streamflow at Sagehen Creek and Independence Creek, Sierra Nevada, USA." Hydrology and Earth System Sciences 24, no. 11 (2020): 5095–123. http://dx.doi.org/10.5194/hess-24-5095-2020.

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Abstract. Water levels in streams and aquifers often exhibit daily cycles during rainless periods, reflecting daytime extraction of shallow groundwater by evapotranspiration (ET) and, during snowmelt, daytime additions of meltwater. These cycles can aid in understanding the mechanisms that couple solar forcing of ET and snowmelt to changes in streamflow. Here we analyze 3 years of 30 min solar flux, sap flow, stream stage, and groundwater level measurements at Sagehen Creek and Independence Creek, two snow-dominated headwater catchments in California's Sierra Nevada mountains. Despite their sh

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36

Rose, Clémence, Martine Collaud Coen, Elisabeth Andrews, et al. "Seasonality of the particle number concentration and size distribution: a global analysis retrieved from the network of Global Atmosphere Watch (GAW) near-surface observatories." Atmospheric Chemistry and Physics 21, no. 22 (2021): 17185–223. http://dx.doi.org/10.5194/acp-21-17185-2021.

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Abstract. Aerosol particles are a complex component of the atmospheric system which influence climate directly by interacting with solar radiation, and indirectly by contributing to cloud formation. The variety of their sources, as well as the multiple transformations they may undergo during their transport (including wet and dry deposition), result in significant spatial and temporal variability of their properties. Documenting this variability is essential to provide a proper representation of aerosols and cloud condensation nuclei (CCN) in climate models. Using measurements conducted in 201

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37

Bollen, Martijn, Jim Casaer, Thomas Neyens, and Natalie Beenaerts. "When and where? Day-night alterations in wild boar space use captured by a generalized additive mixed model." PeerJ 12 (June 12, 2024): e17390. http://dx.doi.org/10.7717/peerj.17390.

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Wild boar (Sus scrofa), an abundant species across Europe, is often subjected to management in agro-ecosystems in order to control population size, or to scare them away from agricultural fields to safeguard crop yields. Wild boar management can benefit from a better understanding on changes in its space use across the diel cycle (i.e., diel space use) in relation to variable hunting pressures or other factors. Here, we estimate wild boar diel space use in an agro-ecosystem in central Belgium during four consecutive “growing seasons” (i.e., April–September). To achieve this, we fit generalized

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Cohen, J. H., and R. B. Forward. "Diel vertical migration of the marine copepod Calanopia americana. I. Twilight DVM and its relationship to the diel light cycle." Marine Biology 147, no. 2 (2005): 387–98. http://dx.doi.org/10.1007/s00227-005-1569-x.

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39

Wyman, Michael. "Diel Rhythms in Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase and Glutamine Synthetase Gene Expression in a Natural Population of Marine Picoplanktonic Cyanobacteria (Synechococcusspp.)." Applied and Environmental Microbiology 65, no. 8 (1999): 3651–59. http://dx.doi.org/10.1128/aem.65.8.3651-3659.1999.

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ABSTRACT Diel periodicity in the expression of key genes involved in carbon and nitrogen assimilation in marine Synechococcus spp. was investigated in a natural population growing in the surface waters of a cyclonic eddy in the northeast Atlantic Ocean.Synechococcus sp. cell concentrations within the upper mixed layer showed a net increase of three- to fourfold during the course of the experiment (13 to 22 July 1991), the population undergoing approximately one synchronous division per day. Consistent with the observed temporal pattern of phycoerythrin (CpeBA) biosynthesis, comparatively littl

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40

Chen, Jichen, Jianchao Yang, Hong Du, et al. "Laminarin, a Major Polysaccharide in Stramenopiles." Marine Drugs 19, no. 10 (2021): 576. http://dx.doi.org/10.3390/md19100576.

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During the processes of primary and secondary endosymbiosis, different microalgae evolved to synthesis different storage polysaccharides. In stramenopiles, the main storage polysaccharides are β-1,3-glucan, or laminarin, in vacuoles. Currently, laminarin is gaining considerable attention due to its application in the food, cosmetic and pharmaceuticals industries, and also its importance in global biogeochemical cycles (especially in the ocean carbon cycle). In this review, the structures, composition, contents, and bioactivity of laminarin were summarized in different algae. It was shown that

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41

Lawson, Jenna, Andrew Whitworth, and Cristina Banks-Leite. "Soundscapes show disruption across the diel cycle in human modified tropical landscapes." Ecological Indicators 144 (November 2022): 109413. http://dx.doi.org/10.1016/j.ecolind.2022.109413.

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42

Woltz, J. M., and D. A. Landis. "Comparison of sampling methods of Aphis glycines predators across the diel cycle." Journal of Applied Entomology 138, no. 7 (2013): 475–84. http://dx.doi.org/10.1111/jen.12106.

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43

Gusareva, Elena S., Enzo Acerbi, Kenny J. X. Lau, et al. "Microbial communities in the tropical air ecosystem follow a precise diel cycle." Proceedings of the National Academy of Sciences 116, no. 46 (2019): 23299–308. http://dx.doi.org/10.1073/pnas.1908493116.

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The atmosphere is vastly underexplored as a habitable ecosystem for microbial organisms. In this study, we investigated 795 time-resolved metagenomes from tropical air, generating 2.27 terabases of data. Despite only 9 to 17% of the generated sequence data currently being assignable to taxa, the air harbored a microbial diversity that rivals the complexity of other planetary ecosystems. The airborne microbial organisms followed a clear diel cycle, possibly driven by environmental factors. Interday taxonomic diversity exceeded day-to-day and month-to-month variation. Environmental time series r

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44

Woolway, Richard Iestyn, David M. Livingstone, and Martin Kernan. "Altitudinal dependence of a statistically significant diel temperature cycle in Scottish lochs." Inland Waters 5, no. 4 (2015): 311–16. http://dx.doi.org/10.5268/iw-5.4.854.

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45

Hynes, Annette M., Brad J. Blythe, and Brian J. Binder. "An individual-based model for the analysis of Prochlorococcus diel cycle behavior." Ecological Modelling 301 (April 2015): 1–15. http://dx.doi.org/10.1016/j.ecolmodel.2015.01.011.

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46

Bollens, Stephen M., and Donald E. Stearns. "Predator-induced changes in the diel feeding cycle of a planktonic copepod." Journal of Experimental Marine Biology and Ecology 156, no. 2 (1992): 179–86. http://dx.doi.org/10.1016/0022-0981(92)90244-5.

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47

Fahnenstiel, Gary L., Tyrone R. Patton, Hunter J. Carrick, and Michael J. McCormick. "Diel Division Cycle and Growth Rates ofSynechococcus in Lakes Huron and Michigan1." Internationale Revue der gesamten Hydrobiologie und Hydrographie 76, no. 4 (1991): 657–64. http://dx.doi.org/10.1002/iroh.19910760415.

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48

Tan, Maxine H., Sarah R. Smith, Kim K. Hixson, et al. "The Importance of Protein Phosphorylation for Signaling and Metabolism in Response to Diel Light Cycling and Nutrient Availability in a Marine Diatom." Biology 9, no. 7 (2020): 155. http://dx.doi.org/10.3390/biology9070155.

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Diatoms are major contributors to global primary production and their populations in the modern oceans are affected by availability of iron, nitrogen, phosphate, silica, and other trace metals, vitamins, and infochemicals. However, little is known about the role of phosphorylation in diatoms and its role in regulation and signaling. We report a total of 2759 phosphorylation sites on 1502 proteins detected in Phaeodactylum tricornutum. Conditionally phosphorylated peptides were detected at low iron (n = 108), during the diel cycle (n = 149), and due to nitrogen availability (n = 137). Through a

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49

Trotter, A. J., S. C. Battaglene, and P. M. Pankhurst. "Buoyancy control and diel changes in swim-bladder volume in cultured striped trumpeter (Latris lineata) larvae." Marine and Freshwater Research 56, no. 4 (2005): 361. http://dx.doi.org/10.1071/mf04209.

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Body density, swim-bladder volume, buoyant force and feeding in relation to growth, photoperiod and light intensity were investigated in cultured striped trumpeter larvae. Prior to initial swim-bladder inflation, body density was negative during both the light and dark phases, regulated on a diel cycle from 1.0275 to 1.0290 g cm−3 (seawater: 1.0265 g cm−3). After initial swim-bladder inflation, body density decreased markedly during the dark phase as swim-bladder volume increased on a diel cycle. Downward buoyant force from dry matter increased with age and was compensated for by increasing re

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50

Perdomo, Juan Alejandro, Peter Buchner, and Elizabete Carmo-Silva. "The relative abundance of wheat Rubisco activase isoforms is post-transcriptionally regulated." Photosynthesis Research 148, no. 1-2 (2021): 47–56. http://dx.doi.org/10.1007/s11120-021-00830-6.

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AbstractDiurnal rhythms and light availability affect transcription–translation feedback loops that regulate the synthesis of photosynthetic proteins. The CO2-fixing enzyme Rubisco is the most abundant protein in the leaves of major crop species and its activity depends on interaction with the molecular chaperone Rubisco activase (Rca). In Triticum aestivum L. (wheat), three Rca isoforms are present that differ in their regulatory properties. Here, we tested the hypothesis that the relative abundance of the redox-sensitive and redox-insensitive Rca isoforms could be differentially regulated th

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