Accumulating pollutants in conifer needles on an Atlantic island – A case study with Pinus canariensis on Tenerife, Canary Islands

2005 ◽  
Vol 136 (3) ◽  
pp. 397-407 ◽  
Author(s):  
Michael Tausz ◽  
Walter Trummer ◽  
Walter Goessler ◽  
Astrid Wonisch ◽  
Dieter Grill ◽  
...  
Keyword(s):  
Canary Islands ◽  
Pinus Canariensis ◽  
Conifer Needles ◽  
Atlantic Island

scholarly journals Co-creating narratives for WEF nexus governance: a Quantitative Story-Telling case study in the Canary Islands

2021 ◽  
Author(s):  
Violeta Cabello ◽  
David Romero ◽  
Ana Musicki ◽  
Ângela Guimarães Pereira ◽  
Baltasar Peñate
Keyword(s):  
Water Resources ◽  
Canary Islands ◽  
Sustainable Use ◽  
Quantitative Information ◽  
Practical Case ◽  
Story Telling ◽  
Practical Applications ◽  
Narrative Assessment ◽  
Alternative Water

AbstractThe literature on the water–energy–food nexus has repeatedly signaled the need for transdisciplinary approaches capable of weaving the plurality of knowledge bodies involved in the governance of different resources. To fill this gap, Quantitative Story-Telling (QST) has been proposed as a science for adaptive governance approach that aims at fostering pluralistic and reflexive research processes to overcome narrow framings of water, energy, and food policies as independent domains. Yet, there are few practical applications of QST and most run on a pan-European scale. In this paper, we apply the theory of QST through a practical case study regarding non-conventional water sources as an innovation for water and agricultural governance in the Canary Islands. We present the methods mixed to mobilize different types of knowledge and analyze interconnections between water, energy, and food supply. First, we map and interview relevant knowledge holders to elicit narratives about the current and future roles of alternative water resources in the arid Canarian context. Second, we run a quantitative diagnosis of nexus interconnections related to the use of these resources for irrigation. This analysis provides feedback to the narratives in terms of constraints and uncertainties that might hamper the expectations posed on this innovation. Thirdly, the mixed analysis is used as fuel for discussion in participatory narrative assessment workshops. Our experimental QST process succeeded in co-creating new knowledge regarding the water–energy–food nexus while addressing some relational and epistemological uncertainties in the development of alternative water resources. Yet, the extent to which mainstream socio-technical imaginaries surrounding this innovation were transformed was rather limited. We conclude that the potential of QST within sustainability place-based research resides on its capacity to: (a) bridge different sources of knowledge, including local knowledge; (b) combine both qualitative and quantitative information regarding the sustainable use of local resources, and (c) co-create narratives on desirable and viable socio-technical pathways. Open questions remain as to how to effectively mobilize radically diverse knowledge systems in complex analytical exercises where everyone feels safe to participate.

scholarly journals Study of the current vegetation of the historical lava flows of the Arafo Volcano, Tenerife, Canary Islands, Spain

2020 ◽  
Vol 41 (2) ◽  
pp. 193-212
Author(s):  
Victoria Eugenia Martín Osorio ◽  
Wolf Hermann Wildpret Martín ◽  
Rocío González Negrín ◽  
Wolfredo Wildpret De la Torre
Keyword(s):  
Canary Islands ◽  
Nutrient Deficiency ◽  
Lava Flows ◽  
Pinus Canariensis ◽  
Healthy Tree ◽  
New Associations ◽  
Colonization Dynamics ◽  
Vegetation Complex ◽  
High Degree ◽  
Two Populations

Vegetation research on the lava flows of the historic volcanic eruption of 1705 in Arafo, Tenerife, Canary Islands, is presented. The study area located in the 830000-year-old valley of Güímar was created after a massive landslide 47 km3 in volume. The research is divided into three parts, which cover an altitudinal range from around 35 to 1583 m a.s.l. from the Lower-semiarid Inframediterranean up to the Lower-dry lower-Mesomediterranean bioclimatic belts. First, a phytosociological study of the vegetation present in the area was made and concluded that richness in pioneer communities form a vegetation complex with a high degree of endemicity. Two new associations and four pioneer communities are proposed. Especially notable are the communities of Stereocauletum vesuviani and the pioneer communities of Pinus canariensis. The second part of the research was a field sampling study of 450 individuals of Pinus canariensis, which were measured at different altitudes to obtain data about the colonization dynamics of this species on this 300 years old substrate. We found that stem diameter seems to be a good indicator for healthy tree development at a range between 700 to 1300 m asl, which corresponds to the pine forest as potential vegetation and that many individuals show signs of nutrient deficiency. The third part consists of the publication of two new populations of the Canarian endemism Himantoglossum metlesicsianum, a highly endangered orchid. The monitoring of these two populations has recently begun, and further research will be conducted on all three aspects of this publication, which will be presented and expanded upon in the future.

scholarly journals Reduction of Energy Consumption in Hotels with Aerothermal Energy. Case Study: Canary Islands (Spain)

2018 ◽  
Vol 7 (3.32) ◽  
pp. 127
Author(s):  
Francisco Javier Díaz Perez ◽  
David Chinarro ◽  
M Rosa Pino Otín ◽  
Ricardo Díaz Martín ◽  
Adib Guardiola Mouhaffel
Keyword(s):  
Canary Islands ◽  
Water System ◽  
Heat Pumps ◽  
Hot Water ◽  
Hourly Rate ◽  
The Hours ◽  
Reduction Of Energy Consumption ◽  
Opening And Closing ◽  
And Control

This article presents a management model and control of energy efficiency in hotels adapted to the consumption patterns that ensure the comfort requirements of customers and integrated into the environment of an intelligent tourist complex. The analysis of the hot water system (DHW) of two hotels in the Canary Islands (Spain) in relation to their occupation, yields a solution based on renewable energies using high temperature heat pumps with aerothermal dissipation and supported by boilers of existing LPG propane. The control by programmable automatons (PLC) integrated in a system of control and acquisition of data (SCADA) optimizes the systems to maintain the maximum accumulated energy during the periods of cheapest electric tariff, by means of a system of opening and closing of hydraulic Valves that It manages to adjust the demand of DHW consumption to achieve the highest energy accumulation during the hours with the cheapest electricity tariff. The result after two and a half years of activity registration is a faster return on investment due to the optimized energy management of the system, through the control of operating hours adjusted to the needs of customers and the hourly rate. It has also been predicted that during the estimated 12 years of the system will have saved more than € 1,179,737 and thermal 8,780,005 kWh in a hotel 1 and € 1,315,104 and thermal 9,522,301 kWh in the hotel 2. This model shown can be seen how economically and energetically very efficient.  

scholarly journals A Bimodal Discrete Shifted Poisson Distribution. A Case Study of Tourists’ Length of Stay

Symmetry ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 442 ◽  
Author(s):  
Emilio Gómez-Déniz ◽  
Jorge Vicente Pérez-Rodríguez ◽  
Jimmy Reyes ◽  
Héctor W. Gómez
Keyword(s):  
Length Of Stay ◽  
Poisson Distribution ◽  
Canary Islands ◽  
Count Data ◽  
Mean Value ◽  
Data Models ◽  
Skewed Data ◽  
Count Data Models ◽  
Empirical Results

Although the Poisson distribution is appropriate for modelling equi-dispersed distributions, it reflects bimodality less well. In this paper, we propose a distribution which is more suitable for the latter purpose. It can be fitted to both positively and negatively skewed data and appears to represent overdispersion phenomena correctly in count data models obtained using a Poisson distribution. Furthermore, the distribution can be normalised in terms of its mean value, and therefore covariates can be included. Our empirical results are based on tourists’ length of stay in the Canary Islands (Spain), a popular holiday destination. The study analyses data supplied by the Canary Islands Tourist Expenditure Survey. Our findings show that the model presented is valid and that the fit obtained is reasonably good.

scholarly journals Flood Hazard Management in Public Mountain Recreation Areas vs. Ungauged Fluvial Basins. Case Study of the Caldera de Taburiente National Park, Canary Islands (Spain)

Geosciences ◽  
2017 ◽  
Vol 8 (1) ◽  
pp. 6 ◽  
Author(s):  
Julio Garrote ◽  
Andrés Díez-Herrero ◽  
José Bodoque ◽  
María Perucha ◽  
Pablo Mayer ◽  
...  
Keyword(s):  
Canary Islands ◽  
National Park ◽  
Flood Hazard ◽  
Hazard Management ◽  
Recreation Areas ◽  
Flood Hazard Management

scholarly journals Modelling and simulation of a lava flow affecting a shore platform: a case study of Montaña de Aguarijo eruption, El Hierro (Canary Islands, Spain)

2021 ◽  
Vol 17 (2) ◽  
pp. 502-511
Author(s):  
C. Prieto-Torrell ◽  
A. Rodriguez-Gonzalez ◽  
M. Aulinas ◽  
J. L. Fernandez-Turiel ◽  
M.C. Cabrera ◽  
...  
Keyword(s):  
Lava Flow ◽  
Canary Islands ◽  
Modelling And Simulation ◽  
El Hierro ◽  
Shore Platform

scholarly journals Antropología, deporte y turismo: Reflexiones sobre deportes étnicos, identidades, políticas deportivas y promoción turística en las Islas Canarias (España) (Anthropology, sports, and tourism: reflections on ethnic sports, identities, sporting policies, a

Retos ◽  
2019 ◽  
pp. 480-486
Author(s):  
Víctor Lorenzo Alonso Delgado ◽  
F. Xavier Medina
Keyword(s):  
Canary Islands ◽  
Public Policies ◽  
Qualitative Information ◽  
Sports Tourism ◽  
Tourism Policy ◽  
Estudio De Caso

El objetivo de este artículo es el de mostrar las contradicciones, tensiones y conflictos latentes en relación con los deportes étnicos, las políticas públicas y la promoción del turismo deportivo en las Islas Canarias. El artículo, basado en etnografía y en información cualitativa, muestra cómo determinados deportes étnicos se llevan a cabo en un contexto turístico maduro como es el del archipiélago canario, y para ello hemos desarrollado un estudio de caso encuadrado de manera principal en la isla de Fuerteventura. Si bien las políticas públicas apoyan estas prácticas deportivas atendiendo a su fundamento identitario y cultural, dicho apoyo resulta difuso cuando se habla específicamente de política turística, donde la atención al deporte pasa hoy en día muy principalmente por el turismo activo. Asimismo, los actores participantes presentan posicionamientos diferentes en torno a la potencial presencia de estos deportes étnicos en el ámbito turístico, lo que permite ver con mayor significación las tensiones resultantes.Abstract. The aim of this article is to show the different contradictions, tensions, and latent conflicts related to ethnic sports, public policies, and promotion of sports tourism in the Canary Islands. This article, based on ethnography and qualitative information, shows the development of certain ethnic sports in a tourist context. A case study was carried out in the island of Fuerteventura, where tensions and latent conflicts exist despite public policies actually supporting these sports practices –underlining their identity and cultural basis-. Such support is very frequently diffuse in terms of tourism policy, where attention to sport is mainly driven by active tourism. Likewise, those having a role in the tourism field assume different positions regarding the potential presence of these ethnic sports in it, a fact that makes the resulting tensions more evdient.

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