GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles  (326)
  • Data  (4)
Document type
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Immunological reviews 166 (1998), S. 0 
    ISSN: 1600-065X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary: Teleosts (bony fish) are thought to primarily or exclusively possess a single, structural form of immunoglobulin (Ig), a tetrameric IgM. However, in species wherein intact Ig has been electrophoretically analyzed under denaturing, non-reducing conditions, a significato degree of structural diversity has been revealed. This IgM molecule appears to be assembled with great latitude in the degree of disulfide crosslinking between monomeric or hallmark subunits composing the complete IgM molecule. This heterogeneity in the basic structure (herein referred to as redox forms) is not due to isotopic differences as each B cell produces this heterogeneity within its immunoglobulin product. Additionally, in the case of the catfish, a single fish/mouse chimeric Ig H gene is capable of producing IgM with a comparable amount of structural heterogeneity within the mouse cell. Thus, the piscine B lymphocyte routinely assembles a variety of redox forms from one IgM H chain. This has both profound biosynthetic implications for macromolecular assembly processes as well as intriguing possibilities for the generation of teleost Ig functional diversity.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2024-03-15
    Description: Larger benthic foraminifera (LBF) are unicellular eukaryotic calcifying organisms and an important component of tropical and subtropical modern and ancient oceanic ecosystems. They are major calcium carbonate producers and important contributors to primary production due to the photosynthetic activity of their symbiotic algae. Studies investigating the response of LBF to seawater carbonate chemistry changes are therefore essential for understanding the impact of climate changes and ocean acidification (OA) on shallow marine ecosystems. In this study, calcification, respiration, and photosynthesis of the widespread diatom‐bearing LBF Operculina ammonoides were measured in laboratory experiments that included manipulation of carbonate chemistry parameters. pH was altered while keeping dissolved inorganic carbon (DIC) constant, and DIC was altered while keeping pH constant. The results show clear vulnerability of O. ammonoides to low pH and CO32− under constant DIC conditions, and no increased photosynthesis or calcification under high DIC concentrations. Our results call into question previous hypotheses, suggesting that mechanisms such as the degree of cellular control on calcification site pH/DIC and/or enhanced symbiont photosynthesis in response to OA may render the hyaline (perforate and calcitic‐radial) LBF to be less responsive to OA than porcelaneous LBF. In addition, manipulating DIC did not affect calcification when pH was close to present seawater levels in a model encompassing the total population size range. In contrast, larger individuals (〉1,200 μm, 〉1 mg) were sensitive to changes in DIC, a phenomenon we attribute to their physiological requirement to concentrate large quantities of DIC for their calcification process.
    Keywords: Alkalinity, total; Aragonite saturation state; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calcium carbonate, mass; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chromista; Coast and continental shelf; Experiment; Experiment duration; Foraminifera; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Heterotrophic prokaryotes; Hydroxide ion; Identification; Individuals; Laboratory experiment; Mass; OA-ICC; Ocean Acidification International Coordination Centre; Operculina ammonoides; Oxygen evolution; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Photosynthesis rate; Primary production/Photosynthesis; Ratio; Red Sea; Registration number of species; Respiration; Salinity; Single species; Size; Species; Temperate; Temperature, water; Time in hours; Treatment; Type; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 3889 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2024-03-15
    Description: The response of the marine carbon cycle to changes in atmospheric CO2 concentrations will be determined, in part, by the relative response of calcifying and non-calcifying organisms to global change. Planktonic foraminifera are responsible for a quarter or more of global carbonate production, therefore understanding the sensitivity of calcification in these organisms to environmental change is critical. Despite this, there remains little consensus as to whether, or to what extent, chemical and physical factors affect foraminiferal calcification. To address this, we directly test the effect of multiple controls on calcification in culture experiments and core-top measurements of Globigerinoides ruber. We find that two factors, body size and the carbonate system, strongly influence calcification intensity in life, but that exposure to corrosive bottom waters can overprint this signal post mortem. Using a simple model for the addition of calcite through ontogeny, we show that variable body size between and within datasets could complicate studies that examine environmental controls on foraminiferal shell weight. In addition, we suggest that size could ultimately play a role in determining whether calcification will increase or decrease with acidification. Our models highlight that knowledge of the specific morphological and physiological mechanisms driving ontogenetic change in calcification in different species will be critical in predicting the response of foraminiferal calcification to future change in atmospheric pCO2.
    Keywords: Aragonite saturation state; Area; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcification intensity; Calcification intensity, standard error; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chamber number; Chromista; Coast and continental shelf; Experiment; Foraminifera; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Globigerinoides ruber; Growth/Morphology; Heterotrophic prokaryotes; Laboratory experiment; Magnesium/Calcium ratio; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard error; Red Sea; Salinity; Single species; Species; Temperate; Temperature, water; Type
    Type: Dataset
    Format: text/tab-separated-values, 264 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2024-04-20
    Description: We have measured Mg/Ca, Sr/Ca and Na/Ca in carbonate shells of the deepwater bivalve Acesta excavata. The samples were collected in the Sula reef and the Leksa reef on the Norwegian margin in summer 2014. Measurements were conducted using LA-ICP-MS.Laser ablation was performed using a Resolution M50 193 nm ArF Excimer Laser system (Resonetics), with a 72 μm beam diameter, a pulse rate of 10 Hz and 10 μm/s scan speed. Total sweep time was 0.65 s. Prior to the measurement a fast precleaning pass was conducted at 0.2 mm/s, 10Hz, and 104 μm laser spot size. Elemental ratio analysis was performed with a Thermo-Scientific ELEMENT XR sector field ICP-MS. In total, eight specimens were measured. In three specimens we measuerd perpendicular to the shell to investigate all shell layers. Additionally, we measured all eight samples in the fibrous and microgranular shell section (calcite). The measurements were taken from the ontogenetic oldest part of the bivalve (ventral side), spanning a length of 20 mm.
    Keywords: Aecsta excavata; Binary Object; BIOACID; Bivalve; Dive #18; Dive #4; File content; JAGO; Mg/Ca; Na/Ca; POS473; POS473_892-1; POS473_911-1; Poseidon; Sr/Ca; Submersible JAGO
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2024-04-25
    Description: New and compiled Na/Ca measurements of the planktonic foraminifera Globigerinoides ruber. The dataset contains data from foraminiferal samples 1) collected from plankton tows and sediment traps which span a wide salinity range (32.5 - 40.7 salinity units) across the Bay-of-Bengal, Arabian Sea, and Red Sea, 2) cultured in the laboratory under varying carbonate chemistry, and 3) a globally-distributed suite of core-top samples. Na/Ca was measured using both solution and laser ablation ICP-MS. The foraminiferal Na/Ca data are provided alongside environmental parameters for each sample (e.g. temperature, salinity, pH, bottom water Omega calcite), in order to assess the environmental controls on Na/Ca in foraminifera. The data accompany the following manuscript: Gray et al. (2023, doi:10.1016/j.gca.2023.03.011).
    Keywords: Analytical method; as_m5_1; as_m5_10; as_m5_11; as_m5_12; as_m5_13; as_m5_14; as_m5_15; as_m5_16; as_m5_17; as_m5_18; as_m5_19; as_m5_2; as_m5_20; as_m5_21; as_m5_3; as_m5_4; as_m5_5; as_m5_6; as_m5_7; as_m5_8; as_m5_9; as_m5_LA; Calcite saturation state; Calculated according to Henehan et al. (2015); CAR22Z_RUBER_SS_250-300; CAR22Z_RUBER_SS_300-355; Carbonate ion; cbbt_LA; cbbt06_C10; cbbt06_C11; cbbt06_C12; cbbt06_C2; cbbt06_C3; cbbt06_C4; cbbt06_C6; cbbt06_C7; cbbt06_C8; cbbt06_C9; Core; CORE; DEPTH, water; Eilat_RUBER_SL_250-300; Eilat_RUBER_SS_250-300; Eilat_Tow_DE; Eilat_Tow1; Eilat_Tow2; Eilat_Tow3; Event label; Foraminifera; Foraminiferal geochemistry; G4_RUBER_SL_300-355; G4_RUBER_SL_355-400; G4_RUBER_SS_300-355; GGC48_RUBER_MIXED_250-300; GGC48_RUBER_MIXED_300-355; GGC48_RUBER_SS_250-300; GGC48_RUBER_SS_300-355; Globigerinoides ruber white; Globigerinoides ruber white, size; Globigerinoides ruber white, Sodium/Calcium ratio; Globigerinoides ruber white, Sodium/Calcium ratio, standard deviation; LATITUDE; LONGITUDE; MC120_RUBER_SL_250-300; MC120_RUBER_SL_300-355; MC120_RUBER_SS_250-300; MC120_RUBER_SS_300-355; MC120_RUBER_SS_355-400; MC29__RUBER_SL_250-355; MC394_RUBER_MIXED_300-355; MC40_RUBER_SL_300-355; MC420_RUBER_SL_250-300; MC420_RUBER_SL_300-355; MC420_RUBER_SL_355-400; MC420_RUBER_SS_250-300; MC420_RUBER_SS_300-355; MC420_RUBER_SS_355-400; MC436_RUBER_SL_300-355; MC497_RUBER_SL_300-355; MC497_RUBER_SS_300-355; MC497_RUBER_SS_355-400; MC497_RUBER_SS_400-455; MC655_RUBER_PINK; MC655_RUBER_SL_250-300; MC655_RUBER_SL_300-355; mezger2016_pp1; mezger2016_pp2; mezger2016_pp4; mezger2016_pp5; mezger2016_pp7; mezger2016_pp9; Microscopy; Na/Ca; nbbt09_N1; nbbt09_N10_11; nbbt09_N13; nbbt09_N3; nbbt09_N4; nbbt09_N5; nbbt09_N6; nbbt09_N7; nbbt09_N8; OC476-SR223_RUBER_SL_250-300; OC476-SR223_RUBER_SL_300-355; OC476-SR223_RUBER_SS_250-355; ODP_664_RUBER_SL_300-355; ODP_664_RUBER_SS_300-355; pH; planktic foraminifera; Plankton Tow; Q699_RUBER_SL_250-355; Reference/source; Salinity; Sample ID; Sample type; sbbt_LA; sbbt09_S1; sbbt09_S10; sbbt09_S11; sbbt09_S12; sbbt09_S2; sbbt09_S3; sbbt09_S4; sbbt09_S5; sbbt09_S6; sbbt09_S8; sbbt09_S9; Sediment trap; See description in dataset comment; Site; T329_RUBER_SL_250-300; T329_RUBER_SL_300-355; T329_RUBER_SL_355-400; T329_RUBER_SS_250-300; T329_RUBER_SS_300-355; T329_RUBER_SS_355-400; Temperature, water; TOWN; Tow net; U226_RUBER_SL_250-355
    Type: Dataset
    Format: text/tab-separated-values, 1907 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2021-05-19
    Description: La Siguanea inlet, one of the two inlets present in the Gulf of Batabanó, contains essential habitats such as seagrass beds and mangroves. However, it has been poorly studied and currently there is little information about the biological diversity in the area. The aim of this study was to make the first check list of fishes on this region of the Cuban archipelago. We used complementary methodologies such as multiple seine nets, gill net, drum lines, visual census and underwater video census. The inventory recorded 122 species of fishes distributed in 53 families. The best represented families were Haemulidae, Lutjanidae, Scaridae, Carangidae, Monacanthidae and Gerreidae. This finding coincided partially with similar studies done in other Cuban shelf areas, although the order of these may vary. During the surveys a high proportion of juvenile fishes was found, which suggests a possible nursery site that could be playing an important role in fish stocks in the area. This result contributes to raise the knowledge about marine biodiversity in Cuba and also for the Caribbean, providing a baseline of fish for the area. In this work we found a high diversity of fishes in La Siguanea inlet, as well as a high proportion of juveniles. Future studies that explore the composition and structure of fish stocks in the area are required; as well as studies on the possible connectivity between this area and the reefs in Punta Francés. Allowing a better understanding of ecological processes in the area, and in turn a better use and management of these natural resources.
    Description: La Ensenada de la Siguanea es una de las dos ensenadas presentes en el Golfo de Batabanó, en la cual se pueden encontrar importantes hábitats para el desarrollo de los peces como son los pastizales y los manglares. No obstante, esta ensenada ha sido poco estudiada y se cuenta con poca información sobre la diversidad biológica en el área. El objetivo de este estudio fue realizar, por primera vez para el área, un inventario de las especies de peces. Se emplearon diferentes metodologías de muestreo como redes de pesca, palangres, censos visuales y videos bajoel agua. Se inventariaron 122 especies de peces distribuidas en 53 familias. Las familias más diversas fueron Haemulidae, Lutjanidae, Scaridae, Carangidae, Monacanthidae y Gerreidae, coincidiendo parcialmente con resultados previos en otras regiones del país, aunque su orden puede variar. En los muestreos se encontró una alta proporción de juveniles de peces, sugiriendo que esta es una zona de crianza, que puede tener un rol importante en las poblaciones de peces en el área. Estos resultados contribuyen al conocimiento de la diversidad marina en Cuba y el Caribe, proporcionado una línea base de la ictiofauna para la Ensenada de la Siguanea. En este trabajo se encontró una alta diversidad de de peces en la Siguanea, así como un elevada proporción de juveniles. Se requieren de estudios futuros que exploren la composición y estructura de las poblaciones de peces en el área, así como la posible conectividad entre esta área y el Parque Nacional Punta Francés. Esto permitirá un mejor entendimiento de los procesos ecológicos en el área, y un mejor uso y manejo de los recursos naturales.
    Description: Published
    Keywords: Diversidad ; Peces ; Inventario ; Diversity ; Fishes ; Inventory
    Repository Name: AquaDocs
    Type: Journal Contribution , Not Known
    Format: pp. 29-45
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2022-05-25
    Description: Author Posting. © Elsevier B.V., 2007. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Comparative Biochemistry and Physiology Part D: Genomics and Proteomics 2 (2007): 257-286, doi:10.1016/j.cbd.2007.09.001.
    Description: A strong foundation of basic and applied research documents that the estuarine fish Fundulus heteroclitus and related species are unique laboratory and field models for understanding how individuals and populations interact with their environment. In this paper we summarize an extensive body of work examining the adaptive responses of Fundulus species to environmental conditions, and describe how this research has contributed importantly to our understanding of physiology, gene regulation, toxicology, and ecological and evolutionary genetics of teleosts and other vertebrates. These explorations have reached a critical juncture at which advancement is hindered by the lack of genomic resources for these species. We suggest that a more complete genomics toolbox for F. heteroclitus and related species will permit researchers to exploit the power of this model organism to rapidly advance our understanding of fundamental biological and pathological mechanisms among vertebrates, as well as ecological strategies and evolutionary processes common to all living organisms.
    Description: This material is based on work supported by grants from the National Science Foundation DBI-0420504 (LJB), OCE 0308777 (DLC, RNW, BBR), BES-0553523 (AW), IBN 0236494 (BBR), IOB-0519579 (DHE), IOB-0543860 (DWT), FSML-0533189 (SC); National Institute of Health NIEHS P42-ES007381(GVC, MEH), P42-ES10356 (RTD), ES011588 (MFO); and NCRR P20 RR-016463 (DWT); Natural Sciences and Engineering Research Council of Canada Discovery (DLM, TDS, WSM) and Collaborative Research and Development Programs (DLM); NOAA/National Sea Grant NA86RG0052 (LJB), NA16RG2273 (SIK, MEH,GVC, JJS); Environmental Protection Agency U91620701 (WSB), R82902201(SC) and EPA’s Office of Research and Development (DEN).
    Keywords: Fundulus heteroclitus ; Physiological genomics ; Ecological genomics ; Evolutionary genomics ; Toxicogenomics ; Environmental genomics
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    facet.materialart.
    Unknown
    In:  http://aquaticcommons.org/id/eprint/2099 | 403 | 2011-09-29 19:41:17 | 2099
    Publication Date: 2021-07-12
    Description: Health advisories are now posted in northern Florida Bay, adjacent to the Everglades, warning of high mercury concentrations in some species of gamefish. Highestconcentrations of mercury in both forage fish and gamefish have been measured in the northeastern corner of Florida Bay, adjacent to the dominant freshwater inflows from the Everglades. Thirty percent of spotted seatrout (Cynoscion nebulosus Cuvier, 1830) analyzed exceeded Florida’s no consumption level of 1.5 μg g−1 mercury in this area. We hypothesized that freshwater draining the Everglades servedas the major source of methylmercury entering the food web supporting gamefish. A lack of correlation between mercury concentrations and salinity did not support this hypothesis, although enhanced bioavailability of methylmercury is possible as freshwater is diluted with estuarine water. Stable isotopes of carbon, nitrogen, andsulfur were measured in fish to elucidate the shared pathways of methylmercury and nutrient elements through the food web. These data support a benthic source of both methylmercury and nutrient elements to gamefish within the eastern bay, as opposed to a dominant watershed source. Ecological characteristics of the eastern bay, including active redox cycling in near-surface sediments without excessive sulfide production are hypothesized to promote methylmercury formation and bioaccumulation in the benthos. Methylmercury may then accumulate in gamefish through a food web supported by benthic microalgae, detritus, pink shrimp (Farfantepenaeus duorarum Burkenroad, 1939), and other epibenthic feeders. Uncertainty remains as to the relative importance of watershed imports of methylmercury from the Everglades and in situ production in the bay, an uncertainty that needs resolution if the effects of Everglades restoration on mercury levels in fish are to be modeled and managed.
    Keywords: Ecology ; Fisheries ; Chemistry
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 321-345
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    facet.materialart.
    Unknown
    Wiley
    In:  EPIC3Geophysical Research Letters, Wiley, 48, pp. e2021GL092773, ISSN: 0094-8276
    Publication Date: 2021-08-23
    Description: A quantitative analysis of any environment older than the instrumental record relies on proxies. Uncertainties associated with proxy reconstructions are often underestimated, which can lead to artificial conflict between different proxies, and between data and models. In this paper, using ordinary least squares linear regression as a common example, we describe a simple, robust and generalizable method for quantifying uncertainty in proxy reconstructions. We highlight the primary controls on the magnitude of uncertainty, and compare this simple estimate to equivalent estimates from Bayesian, nonparametric and fiducial statistical frameworks. We discuss when it may be possible to reduce uncertainties, and conclude that the unexplained variance in the calibration must always feature in the uncertainty in the reconstruction. This directs future research toward explaining as much of the variance in the calibration data as possible. We also advocate for a “data-forward” approach, that clearly decouples the presentation of proxy data from plausible environmental inferences.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2024-02-08
    Description: Shells of the giant clam Tridacna can provide decade-long records of past environmental conditions via their geochemical composition and structurally through growth banding. Counting the daily bands can give an accurate internal age model with high temporal resolution, but daily banding is not always visually retrievable, especially in fossil specimens. We show that daily geochemical cycles (e.g., Mg/Ca) are resolvable via highly spatially resolved laser-ablation inductively coupled plasma mass spectrometry (LA-ICPMS; 3 \xc3\x97 33 \xce\xbcm laser slit) in our Miocene (\xe2\x88\xbc10 Ma) specimen, even in areas where daily banding is not visually discernible. By applying wavelet transformation on the measured daily geochemical cycles, we quantify varying daily growth rates throughout the shell. These growth rates are thus used to build an internal age model independent of optical daily band countability. Such an age model can be used to convert the measured elemental ratios from a function of distance to a function of time, which helps evaluate paleoenvironmental proxy data, for example, regarding the timing of sub-seasonal events. Furthermore, the quantification of daily growth rates across the shell facilitates the evaluation of (co)dependencies between growth rates and corresponding elemental compositions.
    Keywords: Tridacna
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...