Occurrence and environmental hazard of organic UV filters in seawater and wastewater from Gran Canaria Island (Canary Islands, Spain)

Abstract Recent fieldwork in Gran Canaria and Tenerife (Canary Islands, Spain), mostly between 2012 and 2016, yielded new chorological data for several non-native vascular plant species. The following are considered naturalized and/or potentially invasive: Callistemon viminalis, Casuarina glauca, Chloris barbata, Cyperus difformis, Eucalyptus gomphocephala, E. sideroxylon, Nephrolepis cordifolia, Rumex palustris, Senna × artemisioides (s.l.) and S. × floribunda and are reported for the first time from the Canary Islands. Other first records include: Cascabela thevetia (Tenerife), Cyclospermum leptophyllum (Gran Canaria), Digitaria radicosa (Gran Canaria, Tenerife), Dysphania anthelmintica (Tenerife), Erythrostemon gilliesii (Tenerife), Heliotropium supinum (Tenerife), Limoniastrum monopetalum (Tenerife), Nerium oleander (Tenerife), Pascalia glauca (Tenerife), Phytolacca americana (Tenerife), Podranea ricasoliana (Gran Canaria), Psidium guajava (Gran Canaria), Rumex cristatus (Tenerife), Schinus terebinthifolia (Tenerife), Solandra maxima (Tenerife), Tipuana tipu (Tenerife) and Youngia japonica (Gran Canaria). More than 20 additional taxa also represent chorological novelties but are considered ephemerals. Finally, miscellaneous notes are added for Diplachne fusca subsp. uninervia, Eclipta prostrata, Pluchea carolinensis, Prosopis juliflora and Sida rhombifolia from Gran Canaria.

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Los soldados del presidio de Gran Canaria en el siglo xvi/

Cliocanarias ◽

10.53335/cliocanarias.2021.3.12 ◽

2021 ◽

pp. 1-33

Author(s):

Manuel Lobo Cabrera ◽

Keyword(s):

Canary Islands ◽

Gran Canaria

The study of the militias in the Canary archipelago has been a recurring theme in insular historiography, addressed by different authors in breadth and depth, covering not only their organization but also the strategy and weapons used in moments of danger. However, the presence of the presidios in the Canary Islands has had fewer options, as they are professional troops, passing through and reinforcement, that operate on the islands at specific times. The objective, therefore, that we pursue in this study is. in the development of Gran Canaria defense, to oppose the two types of forces that operated in its territory and their characteristics and consequences.

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Attitudes of children with cochlear implants or hearing aids to inclusive education in the Canary Islands

10.31124/advance.9340787 ◽

2020 ◽

Author(s):

Olga María Alegre de la Rosa ◽

Luis Miguel Villar Angulo

Keyword(s):

Public Schools ◽

Children And Adolescents ◽

Cochlear Implants ◽

Inclusive Education ◽

Canary Islands ◽

Hearing Aids ◽

Attitude Score ◽

Gran Canaria ◽

Medical Specialists ◽

Students Attitudes

Abstract Introduction: This study raised the following problem: How reliable and relevant is the Inclusion for Children and Adolescents Questionnaire (ICAQ) to measure the attitudes of children and adolescents with cochlear implants (CIs) or hearing aids (HAs) to inclusive education (IE) in public schools in the Canary Islands (i.e. provinces of Gran Canaria and Tenerife)? Method: The sample consisted of 297 students from the province of Gran Canaria, and 137 students from the province of Tenerife with an average of 11 years old. An exploratory factor analysis (EFA) determined the reliability and relevance of ICAQ. Results: The authors found four factors of students’ attitudes towards IE: Family involvement and use of technology, Inclusion in the centre, Communication with medical specialists and Assessment of the support technology. Conclusions: There were significant differences between the students with CIs and HAs in the following factors: Inclusion in the centre and Assessment of the support technology. The total score of students’ attitudes towards IE was high. The factor Inclusion in the centre had the most favourable total score of students’ original attitudes towards IE. Communication with medical specialists was the lowest total attitude score towards IE for students with CIs.

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Biodegradation of two organic UV-Filters by single bacteria strains

10.21203/rs.3.rs-302964/v1 ◽

2021 ◽

Author(s):

Florentina Laura Chiriac ◽

Catalina Stoica ◽

Iuiana Paun ◽

Florinela Pirvu ◽

Toma Galaon ◽

...

Keyword(s):

Staphylococcus Aureus ◽

Emerging Contaminants ◽

Degradation Products ◽

Aquatic Organisms ◽

Uv Filters ◽

Bacterial Strains ◽

Gram Negative ◽

Biodegradation Process ◽

Salmonella Thyphimurium ◽

Organic Uv Filters

Abstract Organic UV-filters, including 4-hydroxybenzophenone (4-HBP) and 2,4-dihydroxybenzophenone (BP-1), are persistent emerging contaminants whose presence in the environment poses a threat to aquatic organisms due to their endocrine disruptor’s properties. For this reason, finding suitable technological processes for their safety and efficient removal from the environment represent a priority for the scientific community. To the author’s knowledge, until now, there are no studies reporting the biodegradation of 4-HBP and BP-1 by a single bacteria strain. In this paper, there were tested the 4-HBP and BP-1 biodegradation potential of two Gram-positive (Staphylococcus aureus and Enterococcus faecalis) and two Gram-negative (Salmonella typhimurium and Serratia rubidae). The 4-HPB biodegradation process was observed only in the presence of Gram-negative bacterial strains. Thus, the biodegradation rates of 4-HBP reached up to 12.7% after 24h of incubation in presence of Salmonella thyphimurium and up to 24.0% after 24h of incubation with Serratia rubidae. Staphylococcus aureus was able to biodegrade 26.7% of BP-1, while Salmonella thiphymurium was able to biodegrade 14.7% of BP-1 after 24h of incubation. Their biodegradation products generated during the 4-HBP biodegradation process by Serratia rubidae were analyzed through LC-MS/MS analysis. The (bio)degradation products were benzophenone and a multi-hydroxylated derivative of 4-HBP and the degradation pathways were proposed. The data obtained in this study gave important information regarding the 4-HBP and BP-1 potential biodegradation by single bacterial strains.

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Seasonality of planktonic crustacean decapod larvae in the subtropical waters of Gran Canaria Island, NE Atlantic

Scientia Marina ◽

10.3989/scimar.04683.08a ◽

2018 ◽

Vol 82 (2) ◽

pp. 119 ◽

Cited By ~ 3

Author(s):

José M. Landeira ◽

Fernando Lozano-Soldevilla

Keyword(s):

Canary Islands ◽

Temporal Dynamics ◽

Larval Abundance ◽

Ne Atlantic ◽

Crangon Crangon ◽

Subtropical Region ◽

Larval Release ◽

Gran Canaria ◽

Release Times ◽

Decapod Larvae

A monitoring programme was established to collect plankton samples and information of environmental variables over the shelf off the island of Gran Canaria during 2005 and 2006. It produced a detailed snapshot of the composition and seasonal assemblages of the decapod larvae community in this locality, in the subtropical waters of the Canary Islands (NE Atlantic), where information about crustacean phenology has been poorly studied. The larval community was mainly composed of benthic taxa, but the contribution of pelagic taxa was also significant. Infraorders Anomura (33.4%) and Caridea (32.8%) accounted for more than half the total collected larvae. High diversity, relatively low larval abundance throughout the year and weak seasonality characterized the annual cycle. However, in relation to the temporal dynamics of temperature, two distinct larval assemblages (cold and warm) were identified that correspond to periods of mixing and stratification of the water column. The results also indicate that larval release times and durations in the subtropical waters are earlier and longer than at other higher latitudes in the NE Atlantic. We detected the presence of larvae of six species that have not yet been reported from the Canary Islands (Pandalina brevirostris, Processa edulis, Necallianasa truncata, Parapenaeus longirostris, Crangon crangon, Nematopagurus longicornis). Finally, this study provides a baseline for future comparisons with respect to fishery pressure and climate variability in this subtropical region.

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