Gotowe bibliografie tematyczne / Trophic spectra

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Gotowa bibliografia na temat „Trophic spectra”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Trophic spectra"

Gascuel, Didier, Yves-Marie Bozec, Emmanuel Chassot, Audrey Colomb, and Martial Laurans. "The trophic spectrum: theory and application as an ecosystem indicator." ICES Journal of Marine Science 62, no. 3 (2005): 443–52. http://dx.doi.org/10.1016/j.icesjms.2004.12.013.

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Abstract Trophic spectra represent the distribution of biomass, abundance, or catch by trophic level, and may be used as indicators of the trophic structure and functioning of aquatic ecosystems in a fisheries context. As a theoretical background, we present a simple ecosystem model of biomass flow reflecting predation and ontogenetic processes. Biomass trophic spectrum of total biomass can be modelled as the result of three major factors and processes: trophic efficiency, transfer kinetics, and extent of top-down control. In the simulations, changes in the spectrum highlight fishing impacts o

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Libralato, Simone, and Cosimo Solidoro. "Comparing methods for building trophic spectra of ecological data." ICES Journal of Marine Science 67, no. 3 (2009): 426–34. http://dx.doi.org/10.1093/icesjms/fsp249.

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Abstract Libralato, S., and Solidoro, C. 2010. Comparing methods for building trophic spectra of ecological data. – ICES Journal of Marine Science, 67: 426–434. The distribution of biomass, production, and catches over trophic levels (TLs) of the foodweb has been shown theoretically and empirically to provide powerful insights into ecosystem functioning and the effects of fishing. One approach for building trophic spectra of ecological data is based on smoothing original data and assuming zeroes when no values are available for a TL (smoothing-based method). An alternative method is proposed,

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Setiawan, F., D. Jiang, R. Hamzah, and B. Matsushita. "Inland Water Trophic State Identification using Remote Sensing data and Machine Learning Approach." IOP Conference Series: Earth and Environmental Science 1062, no. 1 (2022): 012033. http://dx.doi.org/10.1088/1755-1315/1062/1/012033.

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Abstract Providing information on inland waters’ trophic state levels (oligotrophic, mesotrophic, eutrophic, and hypereutrophic) is considered more effective in communicating the lake’s conditions to the public and policymakers than water quality. It is highly demanding for a straightforward method to estimate inland waters’ trophic state. This study proposes a model for estimating the lake trophic state levels from remote sensing data. We used simulation data to overcome data limitations in building the classification model. The simulation data consists of one nanometer (nm) interval spectra,

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Boudreau, P. R., and L. M. Dickie. "Biomass Spectra of Aquatic Ecosystems in Relation to Fisheries Yield." Canadian Journal of Fisheries and Aquatic Sciences 49, no. 8 (1992): 1528–38. http://dx.doi.org/10.1139/f92-169.

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The biomass density of aquatic ecosystems can be expressed as an allometric function of organism body size. The log–log plot of this relation, termed the biomass spectrum, is used to compare aquatic ecosystems in various parts of the world. We develop a standardized presentation for several example environments where detailed data on biomass density by body size in the trophic positions, phytoplankton, zooplankton, benthos, and fish, make it possible to establish overall or primary spectral slopes. The basic methodology is adapted for application to other ecosystems where less detailed data ar

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Xu, Junwei, Jie Yin, Binduo Xu, et al. "The Effect of Ontogenetic Dietary Shifts on the Trophic Structure of Fish Communities Based on the Trophic Spectrum." Fishes 10, no. 5 (2025): 231. https://doi.org/10.3390/fishes10050231.

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The trophic spectrum provides a useful method to investigate the trophic structure of fish communities. However, ontogenetic shifts in diet can cause variations in the trophic level with body size, thereby influencing the trophic structure of fish communities. In this study, we investigated the effect of ontogenetic dietary shifts on the trophic structure of fish communities in Haizhou Bay based on trophic spectra and trophic indicators calculated under different scenarios of functional group classification. The results showed that the size threshold of ontogenetic dietary shifts was a viable

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Smolskaya, V. S., H. A. Zhukava, and B. V. Adamovich. "Spectral characteristics of the autotrophic component of suspended matter in the lakes of the National Park “Narochansky”." Doklady of the National Academy of Sciences of Belarus 63, no. 3 (2019): 325–30. http://dx.doi.org/10.29235/1561-8323-2019-63-3-325-330.

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The studies on 32 lakes of the National Park “Narochansky” were aimed both at studying quantitative and qualitative characteristics of the autotrophic component of plankton and at finding their correlation with the data of spectral analysis of pigment composition. On the basis of the chlorophyll content in the summer season (July–August), the main part of the sampled lakes can be attributed to the mesotrophic type, 2 lakes – oligotrophic, 10 – eutrophic. The content of chlorophyll-ɑ in the lakes ranged from 0.3 to 55.2 μg/l, seston – from 0.3 to 29.8 mg/l. Pigment indices, reflecting the state

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Cózar, Andrés, Carlos M. García, José A. Gálvez, and Fidel Echevarría. "Structuring pelagic trophic networks from the biomass size spectra." Ecological Modelling 215, no. 4 (2008): 314–24. http://dx.doi.org/10.1016/j.ecolmodel.2008.02.038.

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GJONI, VOJSAVA, STAMATIS GHINIS, MAURIZIO PINNA, et al. "Patterns of functional diversity of macroinvertebrates across three aquatic ecosystem types, NE Mediterranean." Mediterranean Marine Science 20, no. 4 (2019): 703. http://dx.doi.org/10.12681/mms.19314.

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This study is focused on investigating the variation patterns of macroinvertebrate guilds functional structure, in relation to the taxonomic one, across aquatic ecosystem types along the salinity gradient from freshwater to marine and the resulting implications on guild organization and energy flows. Synoptic samplings have been carried out using the leaf-pack technique at 30 sites of the aquatic ecosystems of the Corfu Island (Greece), including freshwater, lagoon, and marine sites. Here, we analyzed the macroinvertebrate guilds of river, lagoon, and marine ecosystems, as: i. taxonomic compos

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Cózar, Andrés, Carlos M. García, and José A. Gálvez. "Analysis of plankton size spectra irregularities in two subtropical shallow lakes (Esteros del Iberá, Argentina)." Canadian Journal of Fisheries and Aquatic Sciences 60, no. 4 (2003): 411–20. http://dx.doi.org/10.1139/f03-037.

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Biomass irregularities in the plankton size spectra of two subtropical shallow lakes have been quantified assuming the classical observed generalities of the size spectra. During a seasonal cycle, three main functional size ranges determined the allocation of the spectra irregularities: microbial food web, nanoplanktonmicroplankton autotrophs, and herbivorous organisms. The structural adjustments within these trophic positions responded to the internal competition between functional guilds, mainly as the result of size-based characteristics related to the ability to eat and the susceptibility

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Харченко and Nikolay Kharchenko. "Trophic characteristics of burrowing animals of different ecological groups in the conditions of the central forest steppe." Forestry Engineering Journal 4, no. 3 (2014): 107–16. http://dx.doi.org/10.12737/6275.

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Allocation to food spectra of burrowing ani-mals of different ecological groups has its own specifics that reflect their biotopical distribu-tion. Burrowing mammals of the region is cha-racterized by a combination of different types of plant and animal feeds. Heterophagous and omnivorous in a region of anthropogenic land-scapes is in progress. Burrowing animals, with permanent and long-lasting relationship with burrow (geoaerobionts and geobionts) trophic relations maintain the high level of stability and clear trophic specialization (zoophages or herbivores).

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Rozprawy doktorskie na temat "Trophic spectra"

Bourassa, Nathalie. "Effet de la trophie et de la taille du substrat sur le spectre de taille des invertébrés benthiques en ruisseaux." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6533.

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Five different substrates (sand, fine gravel, coarse gravel, cobble and boulder) in nine streams forming a trophic gradient in the Ottawa Valley have been sampled in June 1992 to determine the effect of trophic level and substrate size on benthic communities. Total biomass of invertebrates (B, mg dry mass m$\sp{-2})$ and periphyton are strongly related to substrate particle size $(\Phi$, $-$Log$\sb2$diameter in mm) and trophy, represented by total phosphorus concentration (P, $\mu$g L$\sp{-1}).$ The model for periphyton biomass (Log$\sb $Peri = $-$0.08 $-$ 1.68Log$\sb $P + 1.08Log$\sb $P$\sp2\

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Zardo, éverton Luís. "ESTRUTURA POPULACIONAL, BIOLOGIA REPRODUTIVA E ECOLOGIA ALIMENTAR DE Loricariichthys melanocheilus REIS & PEREIRA, 2000 (SILURIFORMES, LORICARIIDAE) NO RIO IBICUÍ, RS, BRASIL." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/5320.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The aim of this work was analyze population structure, reproductive biology and feeding ecology of Loricariichthys melanocheilus in Ibicui River. Fish were caught bimonthly in lotic and lentic environment between São Vicente do Sul and Itaqui, with gillnets and witches, with revision every six hours. The population structure was evaluated by seasonal and spatial distribution, bimonthly variations in average size, sex ratio and weight-length relationship. Females reached larger sizes than males and the sex ratio was 1.38 females per

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Alves, Fábio Rui Lima. "Traits of benthic assemblages subjected to different trawling pressure." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/12618.

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Mestrado em Biologia Marinha<br>Over time, fishing techniques improved as a response to the needs of Human populations. Alongside with the increase of fishing activities important changes in the marine ecosystems were also observed (e.g. overexploitation of stocks and habitat loss or degradation). Overfishing, bycatch, discards and ghost-fishing are some of the most discussed impacts of fishing activities, but the effect of bottom trawling should not be underestimated, since it has been proven to have a significant impact of benthic communities. Up to now the knowledge about fisheries impac

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Halouani, Ghassen. "Modélisations de la dynamique trophique d'un écosystème Méditerranéen exploité : le Golfe de Gabès (Tunisie)." Thesis, Brest, 2016. http://www.theses.fr/2016BRES0076/document.

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L’objectif de cette thèse est d’améliorer la compréhension du fonctionnement et de la structure trophique du golfe de Gabès en Tunisie. Afin de concilier exigences écologiques et exploitation des ressources marines, différents modèles écosystémiques ont été développés pour étudier sa dynamique trophique et contribuer à la réflexion sur la mise en place de plans de gestion. Un modèle trophique d’équilibre de masse « Ecospace » a été construit afin d’évaluer les conséquences écosystémiques de différentes mesures de gestion. Les résultats des simulations ont permis d’explorer les interactions ent

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Noersomadi. "Characteristics of tropical tropopause and stratospheric gravity waves analyzed using high resolution temperature profiles from GNSS radio occultation." Kyoto University, 2019. http://hdl.handle.net/2433/242617.

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Janakiraman, S. "A Variable Resolution Global Spectral Method With Finer Resolution Over The Tropics." Thesis, 2009. https://etd.iisc.ac.in/handle/2005/940.

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Variable resolution method helps to study the local scale phenomenon of interest within the context of global scale atmosphere/ocean dynamics. Global spectral methods based on spherical harmonics as basis functions are known to resolve a given function defined on the sphere, in an uniform manner. Though known for its mathematical elegance and higher order accuracy, global spectral methods are considered to be restrictive for developing mesh-refinement strategies. The only mesh refinement strategy available until now is due to the pioneering work of F. Schmidt. Schmidt transformation can study

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Janakiraman, S. "A Variable Resolution Global Spectral Method With Finer Resolution Over The Tropics." Thesis, 2009. http://hdl.handle.net/2005/940.

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Murphy, KJ. "Exploring macroecology of cephalopods in a changing climate through trait-based approaches." Thesis, 2021. https://eprints.utas.edu.au/45940/.

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Cephalopods are important predators and prey in the global oceans and have a key role in the transfer of energy through marine ecosystems. As a result, marine ecosystem structure and function is affected by the trophic role of cephalopods. Individual body size strongly influences the trophic role of marine organisms and quantifying trophic position-individual body size relationships (trophic allometries) is a powerful approach to facilitate size-structured ecosystem modelling. Despite the importance of cephalopods in marine ecosystems and the documentation of their abundance increasing globall

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Książki na temat "Trophic spectra"

Spector, Jonathan M., and Timothy E. Gibson, eds. Atlas of Pediatrics in the Tropics and Resource-Limited Settings. American Academy of Pediatrics, 2005. http://dx.doi.org/10.1542/9781581104271.

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All-new convenient take-along guide to the full spectrum of more than 80 pediatric tropical diseases and conditions. A full-color comprehensive resource for treatment of pediatric tropical disease. Includes dosing information for all diseases discussed, at-a-glance endemicity maps, and weight/height tables for use in assessing nutritional status. Includes a bonus free tool for field screening for malnutrition.

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Jha, Vivekanand. Acute kidney injury in the tropics. Edited by Norbert Lameire. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199592548.003.0241.

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The spectrum of acute kidney injury (AKI) encountered in the hospitals of the tropical zone countries is different from that seen in the non-tropical climate countries, most of which are high-income countries. The difference is explained in large part by the influence of environment on the epidemiology of human disease. The key features of geographic regions falling in the tropical zones are climatic, that is, high temperatures and absence of winter frost, and economic, that is, lower levels of income. The causes and presentation of tropical AKI reflect these prevailing cultural, socioeconomic

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Kidd, Sarah E., and Catriona L. Halliday. Dematiaceous fungi. Edited by Christopher C. Kibbler, Richard Barton, Neil A. R. Gow, Susan Howell, Donna M. MacCallum, and Rohini J. Manuel. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198755388.003.0014.

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The dematiaceous fungal pathogens, classified by their darkly pigmented hyphae, cause infection in both immunosuppressed and immunocompetent individuals. Infections may present as chromoblastomycosis, mycetoma, and a spectrum of phaeohyphomycoses varying in severity. The route of infection may be through traumatic inoculation, or inhalation with or without dissemination. A number of species are considered neurotropic and can cause cerebral abscesses in immunocompetent persons. Infections can occur worldwide, but are most common in the tropics, and some species appear to have specific geographi

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Części książek na temat "Trophic spectra"

Naselli-Flores, Luigi. "Phytoplankton assemblages in twenty-one Sicilian reservoirs: relationships between species composition and environmental factors." In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_1.

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Temponeras, M., J. Kristiansen, and M. Moustaka-Gouni. "Seasonal variation in phytoplankton composition and physical-chemical features of the shallow Lake Doïrani, Macedonia, Greece." In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_10.

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Reynolds, C. S. "Phytoplankton designer — or how to predict compositional responses to trophic-state change." In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_11.

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Rojo, Carmen, Elizabeth Ortega-Mayagoitia, and Miguel Alvarez-Cobelas. "Lack of pattern among phytoplankton assemblages. Or, what does the exception to the rule mean?" In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_12.

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Rojo, C., and M. Alvarez-Cobelas. "A plea for more ecology in phytoplankton ecology." In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_13.

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Reynolds, Colin, Martin Dokulil, and Judit Padisák. "Understanding the assembly of phytoplankton in relation to the trophic spectrum: where are we now?" In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_14.

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Köhler, Jan, and Sigrid Hoeg. "Phytoplankton selection in a river—lake system during two decades of changing nutrient supply." In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_2.

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Negro, Ana I., Caridad De Hoyos, and Jose C. Vega. "Phytoplankton structure and dynamics in Lake Sanabria and Valparaíso reservoir (NW Spain)." In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_3.

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Leitão, M., and L. Léglize. "Long-term variations of epilimnetic phytoplankton in an artificial reservoir during a 10-year survey." In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_4.

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Beyruth, Z. "Periodic disturbances, trophic gradient and phytoplankton characteristics related to cyanobacterial growth in Guarapiranga Reservoir, São Paulo State, Brazil." In The Trophic Spectrum Revisited. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-017-3488-2_5.

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Streszczenia konferencji na temat "Trophic spectra"

Viktor, Mankovsky, and Ekaterina V. Mankovskaya. "Spectral relations of the beam attenuation coefficient with Secchi disk depth for the Mediterranean Sea waters. The influence of sea water components on the shape of beam attenuation coefficient spectra in waters of different trophic state." In XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, edited by Gennadii G. Matvienko and Oleg A. Romanovskii. SPIE, 2019. http://dx.doi.org/10.1117/12.2540809.

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Pfitzner, Kirrilly, Andreas Bollhoefer, Renee Bartolo, and Andrew Esparon. "Spectral sampling of vegetation species in the wet dry tropics." In 2014 6th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS). IEEE, 2014. http://dx.doi.org/10.1109/whispers.2014.8077621.

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Bairwa, Suneel Kumar, Satyabhan Singh, and Anupam Priyadarshi. "Predicting qualitative behavior of a tri-trophic food chain model having Allee effect on prey growth using spectral theory." In 2ND INTERNATIONAL CONFERENCE ON APPLIED MATHEMATICS AND COMPUTATIONAL SCIENCES 2022 (ICAMCS-2022). AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0199450.

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Shaw, Joseph A., Yong Han, James H. Churnside, Robert O. Knuteson, Henry E. Revercomb, and Fred A. Best. "Comparison of Atmospheric Radiances Measured by Two FTIR Spectro-radiometers in the Tropical Pacific." In Optical Remote Sensing of the Atmosphere. Optica Publishing Group, 1997. http://dx.doi.org/10.1364/orsa.1997.owa.4.

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In early 1996, our two organizations measured infrared atmospheric radiances with two independent Fourier Transform InfraRed (FTIR) spectro-radiometers on the NOAA R/V Discoverer in the tropical Pacific. Our objective was to make highly accurate measurements that would be useful for improving radiative transfer models and for establishing FTIR technology as a practical tool for measuring atmospheric radiation in the tropics. However, the usual problem with such an approach is that there is no easy way to assess the accuracy of the resulting data. Therefore, comparing measurements from the two

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Rodrigues, Luciana Machado, and Lui´s Frederico Pinheiro Dick. "Influence of Humic Substances on the Corrosion of the API 5LX65 Steel." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27230.

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Aiming to simulate the underground corrosion of pipeline steels in tropic soils, the electrochemical behavior and corrosion morphology of API 5LX65 steel were studied in 0.01molL−1 Na2SO4 solutions with additions of humic (HA) or fulvic (FA) acids extracted from a peat soil. These humic substances have a higher carboxylic and nitrogenated character for HA, and a higher concentration of oxidized groups for FA, as determined by infrared (FTIR) and Raman spectroscopies. The corrosion tests showed that HA and FA enhance the pitting corrosion of the API 5LX65 steel. The observed pits are always ass

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NISTREANU, Victoria. "Trophic spectrum of the long-eared owl (Asio otus l.) In the Southern part of the Republic of Moldova." In "Instruire prin cercetare pentru o societate prosperă", conferinţă ştiinţifico-practică internaţională. Ion Creangă Pedagogical State University, 2024. https://doi.org/10.46727/c.v1.16-17-05-2024.p32-38.

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Ciuful de pădure (Asio otus) este o pasăre sedentară în Moldova și formează colonii de iarnă de câteva zeci de indivizi în biotopuri favorabile din localități. Spectrul trofic al A. otus a fost studiat în perioada de iarnă în două situri din partea de sud al Republicii Moldova: Sadaclia și Slobozia Mare, unde au fost colectate 378 de ingluvii și identificați 678 de indivizi. Dieta ciufului de pădure a constat din mamifere mici (peste 95%) și păsări. În ambele locații dominant a fost Microtus sp., constituind 67% in Sadaclia si 48% in Slobozia Mare, cu o frecvență de circa 70%. A doua specie ca

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