The epiphyllous bryological flora of Chinobre located in the northeast of Tenerife and included in Reserva Natural Integral de El Pijaral has been studied. 223 leaves with foliicolous bryophytes were collected in the field work, corresponding to 10 species of phorophytes (trees, shrubs, herbs, lianas and ferns) and 20 bryophyte taxa were identified. The life strategies, life-forms and biogeographical element were analyzed and results were compared with that of previous studies. A bibliographical revision of the previous records of these communities in the archipelago was done and compared with our results. Finally, an unpublished study from 1987-88 about the epiphyllous flora of this particular location was also compared with the obtained data.

Endemic flora species are more palatable to invasive herbivores than non-endemic species. In this work we quantified the percentage of damage caused by feral goat on the flora of the Anaga Rural Park. We assessed whether cattle are causing changes in vegetation composition in Morello-Ericetum arboreae and nitrophilous shrub ArtemisioRumicetum lunariae. For this purpose, 16 transects were carried out, in which the cover and level of goat damage of each species were estimated and data on different abiotic variables were collected. The percentage of damaged endemics was positively correlated with the goat droppings index. With respect to the type of community, the results obtained showed a greater damage to endemic species compared to non-endemic species in both open scrubland and forest formations, endangering the survival of many threatened endemic species present exclusively in this natural area.

This study shows the importance of botanical refugee against invasive herbivores. In this work, we analysed the differences in plant diversity and composition in order to demonstrate the effect of invasive herbivores on the flora and the seed bank. Fourteen plots were delimited, four of them in an herbivore exclusion zone. In each plot, a floristic inventory was carried out, estimating cover and those abiotic variables that could affect vegetation dynamics. At the same time, soil samples were collected to carry out the seed bank study, with the aim of examining the regeneration potential of each plot. This study demonstrates the great impact that herbivores have on the studied area, both in terms of plant composition and diversity. The results obtained show that invasive herbivores are completely capable of modifying plant communities, with losses of more than double the number of endemic species, leading to the absence ofthe endemic flora in the seed bank. It also demonstrates the temporality of the richness in inaccessible areas, which should be fenced at their base to avoid the loss of regeneration of the flora they harbour.

Melinis repens (Willd.) Zizka subsp. repens, a grass native to Africa and the southwest of the Arabian peninsula, has established itself in tropical and subtropical regions of the world, including the island of Tenerife (Canary Islands). The first reports in the Canary Islands date back to the 40s of the last century, although its presence could be earlier given the confusion with the native Tricholaena teneriffae (L.f.) Link. In numerous areas of the world it is considered to have invasive behavior, while in Spain it is not included in the Catalog of invasive alien species. Its wide distribution on the island of Tenerife, the appearance and dispersal in the Iberian Peninsula and the first records in Europe, along with the high seed production and high percentage of viability make its inclusion in the list of invasive alien species advisable, to give legal coverage for the application of strategies for its control and eradication.

A total of 38 typus of phanerogams (29 taxa), which are part of the TFC Herbarium, are analyzed. Specimen labels are transcribed and the phenological states of the material as well as the presence of associated documentation are explored. The information on the taxa is updated (distribution, habitat, protection, and new nomenclatural status).

The Indo-West Pacific spotted scat Scatophagus argus (Acanthuriformes, Scatophagidae) is reported for the first time in the Canary Islands (eastern-central Atlantic). This record is based on the sighting of an individual in 2017, which was photographed swimming in shallow waters off the northeastern coast of Gran Canaria, along a route with heavy maritime traffic. In addition to ballast water and organisms transported by oil platforms, the specimen may have been released from an aquarium. No further sightings or captures of this species have been recorded.

The amphi-Atlantic species Brotula barbata (Bloch & Schneider, 1801) (Ophidiiformes, Brotulidae) is reported for the first time in the Canary Islands (northeastern Atlantic). This finding marks a new northern limit for its distribution in the eastern Atlantic. This study also contributes to the knowledge of the species’ morphological characteristics.

Marine macroalgae are vulnerable to be colonized by benthic dinoflagellates. Temporal and spatial variability of dinoflagellates on algal hosts is still a poorly studied topic. To investigate the interaction between marine macroalgae and epiphytic microalgae an infralittoral pool in the rocky platform of Punta del Hidalgo (N Tenerife) was selected. This study focused on the composition of dinoflagellate communities on different abundant macroalgae in the Canary Islands marine flora, such as Anadyomene saldanhae, Asparagopsis taxiformis, Cladophora liebetruthii, Colpomenia sinuosa, Dictyota dichotoma, Halopteris scoparia, ydroclathrus clathratus and Lobophora schneideri. Benthic dinoflagellates ofthe genera Amphidinium, Coolia, Ostreopsis and Prorocentrum were identified. Morphological characteristics of dinoflagellates were studied both under light microscopy and scanning electron microscopy (SEM). Although individuals of benthic dinoflagellates were not numerous, the two most abundant genera were Coolia and Ostreopsis. The identified dinoflagellates did not show specificity towards the selected macroalgae.

Ten scientific surveys were carried out at ‘Isla de La Palma’ and ‘La Graciosa e Islotes al Norte de Lanzarote’ Marine Protected Areas (MPAs) between 2003 and 2010. Length-Weight Relationships (LWR) were estimated for 17 fish species using individual fish records collected by fish pots (half an inch mesh size), bottom horizontal longlines (hook size 3/0) and set gillnets (80 mm mesh size). Fish was measured fresh for the total length (to the lower 0.1 or 0.5 cm, depending on the scientific surveys design) and weighted for the total weight (TW, to the 0.1 g). Except for the Myliobatiformes species (with b-values lower than 2.0), the b-value varied between 2.63 and 3.72. All LWRs were obtained from well adjusted linear regressions with R² ≥0.74. In addition, two new maximum lengths were recorded. Data presented herein expand the knowledge base for these species in the Archipelago, where any status assessment of the species affected by the operating fisheries has been possible so far, and remain as datapoor stocks.