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The present study aims to overview Brazilian human resources and scientific output in astronomy, immunology and oceanography during the last decade.

Data on human resources and on scientific output were obtained from the Brazilian database, the Directory of Research Groups. Scientific outputs were also analysed from a set of journals catalogued by the Institute for Scientific Information: the 20 journals with the largest number of articles in 2003.

Compared with the other two fields, the number of Brazilian researchers in astronomy has not grown from 1997‐2002, but they are the most qualified and more than 90 per cent of them have a PhD degree. Most astronomy publications are in international journals and they are well cited. The most cited astronomy papers are on international topics, but this is not true for the oceanography papers.

These data are derived from a particular set of publications and should be interpreted as trends rather than as definitive.

This study, which covers three fields with different structures and traditions, provides a snapshot of some features of the whole of Brazilian science, and will provide evidence for new science policies.

The serial coverage and indexing policies of Aquatic Sciences and Fisheries Abstracts (ASFA), Oceanic Abstracts, Biosis, and Georef were compared. Analyses indicated considerable overlap in serial sources in marine biology for ASFA, Oceanic Abstracts, and Georef. Biosis appeared to include the largest amount of material relevant to marine biology and Georef the largest relevant to marine geology. Oceanic Abstracts and Georef provided the most extensive general subject indexing, Biosis the most complete taxonomic indexing, and ASFA and Georef the easiest systems for geographic retrieval.

In this article the author discovers a most economic method of velocity calculation of ocean currents with the help of salinity measurements at different depths instead of density measurements‐method that has been followed by the midshipmen and marine research fellows. He also presents all possible applications of ocean currents in the development of navigation, navy, power and energy‐production, oceanography, meteorology, food and medicine‐supplies. The application of ocean current dynamics on ecological life is elaborated in the case of different kinds of fish and amphibian life. The ethico‐scientific implications of these case studies are based on the knowledge of harmonious interactions that exist between the inanimate natural world (ocean currents), the animate natural world (amphibian life) and the human world.

The recent proliferation of preprints could be a way for researchers worldwide to increase the availability and visibility of their research findings. Against the background of rising publication costs caused by the increasing prevalence of article processing fees, the search for other ways to publish research results besides traditional journal publication may increase. This could be especially true for lower-income countries.

Therefore, the authors are interested in the experiences and attitudes towards posting and using preprints in the Global South as opposed to the Global North. To explore whether motivations and concerns about posting preprints differ, the authors adopted a mixed-methods approach, combining a quantitative survey of researchers with focus group interviews.

The authors found that respondents from the Global South were more likely to agree to adhere to policies and to emphasise that mandates could change publishing behaviour towards open access. They were also more likely to agree posting preprints has a positive impact. Respondents from the Global South and the Global North emphasised the importance of peer-reviewed research for career advancement.

The study has identified a wide range of experiences with and attitudes towards posting preprints among researchers in the Global South and the Global North. To the authors' knowledge, this has hardly been studied before, which is also because preprints only have emerged lately in many disciplines and countries.

The peer review history for this article is available at: https://publons.com/publon/10.1108/OIR-04-2023-0181

Only 1% of the presently available 5000 database titles are relevant to marine biology and biotechnology. Nearly 60% of these are bibliographic in nature. There are almost no textual and numeric databases, which are the prime need of researchers. This paper presents a review of the major databases related to marine biology and biotechnology, with a discussion on the scope for textual and numeric databases.

There are very few studies that characterize the properties of the edible part from deep‐water fish species which constitute a new target for developing fisheries. Therefore this paper aimed to examine the balance between health benefits and risks associated to the birdbeak dogfish consumption, with a special emphasis on the assessment of the risks of toxic metal intake.

Between September 2008 and May 2009, 82 individuals were analysed. The chemical composition (moisture, ash, protein and lipid content), essential elements (zinc (Zn), copper (Cu), iron (Fe), potassium (K), magnesium (Mg) and sodium (Na)), toxic elements (mercury (Hg), cadmium (Cd) and lead (Pb)) and fatty acid composition were determined using standard procedures.

The species is a lean fish (fat content <2.0 per cent) and for both females and males the mineral concentration in descending order was K>Na>Mg>Fe>Zn>Cu. The edible part of birdbeak dogfish is a good source of several minerals, namely K and Na, reaching respectively ca 18 and 36 per cent of the recommended daily intakes for a 150 g muscle portion. Polyunsaturated fatty acids prevail in the fatty acid composition of both sexes and significant differences between females and males were only found in palmitic acid, arachidonic acid and omega 6. Females attained larger length and higher Hg values. The risk assessment was established for three different consumption scenarios (one and two portions of 150 g per month and one portion of 150 g per week) and showed that only a regular consumption of one portion of a female dogfish per week posed a higher health risk (15 per cent).

This study presents the information about the quantity of shark muscle (in g) to be ingested in terms of the PTWI allowing each consumer to have access to the risks and benefits in eating this fish.

No data existed for fatty acid profile and risk assessment yet and this is the first information on the essential and toxic elements for the European waters.

While bilinguals frequently mix languages in everyday conversation, these hybrid language practices have often been viewed from a deficit perspective, particularly in classroom contexts. However, an emerging literature documents the complexity of hybrid language practices and their usefulness as an academic and social resource for bilingual students. This chapter examines hybrid language practices among English- and Spanish-speaking high school students in an astronomy/oceanography classroom in southern Arizona. Microethnography, or fine-grained analysis of video recordings from long-term ethnographic observation, is used to reveal what bilingual students accomplished with hybrid language practices in the classroom and to outline implications for teachers who want to engage their students’ hybrid repertoires. Specifically, the analyses reveal that careful attention to hybrid language practices can provide teachers with insights into students’ academic learning across linguistic codes, their use of language mixing for particular functions, and their beliefs about language and identity. The research is necessarily limited in scope because such in-depth analysis can only be done with a very small amount of data. Nevertheless, the findings affirm that hybrid language practices can enrich classroom discourse, academic learning, and social interaction for emergent bilinguals. The chapter highlights a teacher’s story in order to offer practical guidance to other teachers who seek to capitalize on the promise of hybrid language practices in their own classrooms.

In this paper, a light-weight, low-power atmospheric multi-parameter sensor (AMPS), which could be mounted on small flying platforms such as a tethered balloon, a quad-rotor unmanned aerial vehicle (UAV), a UAV helicopter, etc., is implemented and integrated to sample vertical distribution of aerosols with integrated parameters of aerosol particle concentration, temperature, relative humidity and atmospheric pressure.

The AMPS integrates three kinds of probes in an embedded system. A synchronous method based on GPS is proposed to drive the laser aerosol particle sensor, the temperature and humidity probe and the pressure probe to sample four channels approximately simultaneously. Different kinds of housing are designed to accommodate various flying platforms, and the weight is controlled to adapt the payload of each platform.

A series of validation tests show that while the AMPS achieves high precision, its power consumption is less than 1.3 W, which is essential for light flying platforms. The AMPS was mounted on different flying platforms and the difference was evaluated. For three times every five days, vertical profiles of PM2.5 and PM10 concentrations were observed by the AMPS mounted on a quad-rotor UAV, which revealed the significant correlation between the aerosol particle concentration and atmospheric parameters.

A new light-weight and low-power AMPS for small flying platforms is designed and tested, which provides an effective way to explore the properties of aerosol vertical distribution, and to monitor pollutants flexibly.

Purpose – The purpose of this paper is to evaluate the origin of the solid wastes contamination for an isolated beach (Várzea do Una), through the classification of the plastics fraction into specific use‐related categories along a full seasonal cycle. Design/methodology/approach – The assessment was made through the sampling of a transect along a full hydrological year, delimited at an isolated tropical beach under the direct influence of a river. The registered items were then classed according to their most probable sources, with emphasis to plastics of riverine origin. Findings – Results indicated an exceptionally high level of contamination of the beach by plastics of urban origin. The main items found were related to household activities. Hospital wastes were also present, highlighting the riverine contribution to the solid wastes contamination of the beach. Practical implications – The work reports the gravity of the situation in the urban centers of this river basin concerning basic sanitation. It compels the local administrations to act in order to abate the solid wastes collection and final destination. Originality/value – In Brazil, as well as in other tropical/developing countries, there is a lack of scientific reports on the theme. However, they are in great need, since the local, State and Federal administrations' disregard the basic sanitation problem of small and/or isolated coastal communities. The solid wastes generated by these populations easily reach the coastal and marine environments with a number of consequences, themselves also unassessed.

The purpose of this paper is to provide a conceptual framework for using citizen science – defined as a data collection method through which non-professionals engage in contributing to authentic scientific inquiry – within the expedition cruise industry to contribute significantly to the collection of environmental data from hard-to-access Arctic areas.

The authors review trends in Arctic expedition cruise tourism and current needs in Arctic research and monitoring, and clarify where the expedition cruise tourism industry could have the most impact by providing data to the scientific community. The authors also compare the regulatory context in the Antarctic to that in the Arctic and discuss how these differences could affect the widespread use of citizen science. At last, the authors describe some general principles for designing citizen science programs to be successful on board, and highlight several existing programs that are being recognized for their contributions to a greater scientific understanding of the Arctic.

The authors find that citizen science data from the expedition cruise industry are underutilized as a tool for monitoring Arctic change. Numerous examples illustrate how citizen science programs on-board expedition ships can successfully collect robust scientific data and contribute to enhancing the knowledge and stewardship capacity of cruise passengers. Inclusion of citizen science data from the expedition cruise industry should be considered a critical part of international Arctic observing networks and systems.

Active participation in Arctic citizen science by tourists on expedition cruise ships has many potential benefits beyond the collection of high quality data, from increasing passengers’ knowledge and understanding of the Arctic while on board, to affecting their attitudes and behaviors after they return home.

The potential for tourism to contribute to Arctic observing systems has been discussed previously in the scientific literature; the authors narrow the focus to citizen science programs in the expedition cruise industry, and provide concrete examples, in the hope that this will streamline acceptance and implementation of these ideas by researchers and tourism practitioners.