scholarly journals Degradation of Cymodocea nodosa (Ucria) Ascherson meadow at Las Canteras Beach (Gran Canaria, Canary Islands, Atlantic Ocean)

2014 ◽  
Keyword(s):  
Atlantic Ocean ◽  
Canary Islands ◽  
Cymodocea Nodosa ◽  
Gran Canaria

Relation between the type of wave exposure and seagrass losses (Cymodocea nodosa) in the south of Gran Canaria (Canary Islands — Spain)

2014 ◽  
Vol 43 (1) ◽  
Author(s):  
Eduardo Portillo
Keyword(s):  
Canary Islands ◽  
Qualitative Evaluation ◽  
Cymodocea Nodosa ◽  
The South ◽  
Frictional Drag ◽  
Winter Storms ◽  
Gran Canaria ◽  
Seagrass Meadows ◽  
The North ◽  
Storm Waves

AbstractEffects of different types of wave events on Cymodocea nodosa seagrass meadows were observed and investigated by quantitative and qualitative evaluation of material washed ashore a few days after the events. The studied seagrass meadows are located on the south coast of the island of Gran Canaria (Canary Islands — Spain) and they are protected from frequent swells arriving from the North Atlantic. However, sporadic phenomena associated with winter storms occasionally hit this coastline, causing the loss of entire plants (fresh leaves with rhizomes and roots attached). An unusual type of southern swells generated in the South Atlantic also reaches the Islands in spring and summer. A clear relation was observed between the wave events (southern swells and storm waves) and the material cast ashore over the following days, with differences in composition (fresh vs. decaying leaves) depending on the type of event. After southern swells, detached portions of C. nodosa consisted mostly of decaying leaves shed after senescence. These old swells cause frictional drag with moderate oscillations over a wider range at greater depths, removing only decaying leaves from the seagrass meadows and favoring the natural clean-up process.

scholarly journals Subtidal soft-bottom macroinvertebrate communities of the Canary Islands. An ecological approach

2012 ◽  
Vol 60 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Oscar Monterroso ◽  
Rodrigo Riera ◽  
Jorge Núñez
Keyword(s):  
Canary Islands ◽  
Ecological Approach ◽  
Macroinvertebrate Communities ◽  
Cymodocea Nodosa ◽  
Soft Bottom ◽  
Gran Canaria ◽  
La Palma ◽  
Diverse Communities ◽  
Soft Bottoms ◽  
Canarian Archipelago

The Canarian archipelago is characterized by a mosaic of soft-bottoms such as Cymodocea nodosa meadows, Caulerpa spp. meadows, mäerl bottoms, sabellid fields and bare sandy seabeds, including various macroinfaunal communities. Vegetated habitats (e.g. Cymodocea and Caulerpa) maintain more diverse communities than the non-vegetated seabeds. The results indicated that Caulerpa meadows and, to a lesser extent, Cymodocea nodosa and sabellid fields are the richest and most diverse ecosystems in the study area. Moreover, biodiversity differences among islands could be detected with maximum values on the eastern islands (Lanzarote and Gran Canaria) and lowest values on the western ones (La Palma).

New records of naturalised and invasive cacti (Cactaceae) from Gran Canaria and Tenerife, Canary Islands, Spain

Bradleya ◽  
2017 ◽  
Vol 35 (35) ◽  
pp. 58-79 ◽  
Author(s):  
Filip Verloove ◽  
Elizabeth Ojeda-Land ◽  
Gideon F. Smith ◽  
Alessandro Guiggi ◽  
Jorge Alfredo Reyes-Betancort ◽  
...  
Keyword(s):  
Canary Islands ◽  
New Records ◽  
Gran Canaria

scholarly journals New xenophytes from the Canary Islands (Gran Canaria and Tenerife; Spain)

2017 ◽  
Vol 76 (2) ◽  
pp. 120-131 ◽  
Author(s):  
Filip Verloove
Keyword(s):  
Canary Islands ◽  
Vascular Plant ◽  
Psidium Guajava ◽  
Nerium Oleander ◽  
Gran Canaria ◽  
Cyperus Difformis ◽  
Eclipta Prostrata ◽  
Callistemon Viminalis ◽  
Eucalyptus Gomphocephala ◽  
Chloris Barbata

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.

scholarly journals Direct and indirect effects of climate change on Cymodocea nodosa in the Canary Islands

2019 ◽  
Vol 6 ◽  
Author(s):  
Adriana Rodríguez ◽  
Iago Peaguda ◽  
Sergio Moreno-Borges ◽  
Alberto Brito
Keyword(s):  
Climate Change ◽  
Canary Islands ◽  
Indirect Effects ◽  
Cymodocea Nodosa ◽  
Direct And Indirect Effects
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