Perlas Puente, Albert

Universitat Autònoma de Barcelona. Facultat de Veterinària

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CONCLUSIONThe wild boar presence in the urban and peri-urban areas of Castelldefels is a fact and causes problems for citizenship. One of the most determinant factors for the presence of urbanwild boar in Castelldefels are the colonies of cats, so it is necessary to control the feeders. The citizens seems to be aware of the problem, but requires more information to avoidrejecting necessary management measures.Study of an urban wild boar population in CastelldefelsINTRODUCTION AND OBJECTIVESWild boar populations are increasing throughout the world. Geographic and demographic expansion of wild boars could be explained by a combination of socio-economic and ecologicalchanges. The increase in wild boar abundance has driven to an increase in the interaction of this species with human activities. Despite the progressive increase, the population of wildboars in the Parc Nacional del Garraf is the lowest in Catalonia (1,5 wild boards/km²). The management measures in Castelldefels are the campaigns of awareness and the catches withcage and with points of waiting. This paper aims to provide a first approximation to the urban wild boar in Castelldefels with the calculation of density, conducting surveys and aninterview with the mayor of the city.MATERIALS AND METHODS-We carried out a transect (Image 1) of 4.2 km and that takes place in three districts of the city. We travelthe transect 10,6 times a month at a speed of 20km / h with a car. We note all the sightings.-Wild boar population was estimated from the transect data by the minimum convex polygons (MCP)method, one of the most used formulas to estimate wildlife populations, using Qgis software to join theobservation points.-We conducted a survey with google survey as well as in the street.RESULTS-The annual average density in the studyarea is 5 individuals / km2-The months with the highest density areSeptember and October (Graph 1).-The areas with greater density are streetCastanyer and street Passeig Bellavista(Image 2).-Graphically we have a positive correlationbetween the monthly average temperaturevariable and the transect path efficiency.Statistically there is no significance (Graph2).-Graphically we have a negative correlationbetween the variable of the monthlypluviometry and the efficiency of the route ofthe transect. Statistically there is nosignificance (Graph 3).-A 67% of the citizens of Castelldefels like tosee wild boars, but only 13% do not considerthem a problem at all (Graph 4).Image 1: The study transectImage 2: The circles indicate areas of study with a higher concentration of wild boar. Points indicate sightings for monthsGraph 1: Density in the studied area by monthsGraph 2: Efficiency of the route in relation to the average monthly temperature in degreesALBERT PERLAS PUENTEJUNE 2017 0,02,04,06,08,010,012,014,0DensityDensity by months0,00,20,40,60,81,01,21,41,61,80 2 4 6 8 10 12 14 16 18 20Efficiency traveled (sightings / tours)Average monthly temperature ° CEffect of temperature on the efficiency of the route0,00,20,40,60,81,01,21,41,61,80 10 20 30 40 50 60 70 80 90 100Efficiency traveled (sightings / tours)Monthly rain ml.Effect of rain on the efficiency of the routeGraph 3: Efficiency of the route in relation to the average monthly rain in ml.67%33%Do you like to see wild boars?YesNoGraph 4: Survey resultDICUSSION The density of wild boars in Castelldefels is three times higher then the density of Parc Natural del Garraf. The months with the highest density are September and October becausethey are the warmest months (no data was gathered during the summer). The areas with greater density are the streets with colonies of cats because they feed the wild boar whit catfood (Image 3). We may not have significant correlation with rainfall, temperature, and effectiveness because we did not conduct the study during the summer. The degree ofacceptance of the wild boar is similar to other urban areas that coexist with wildlife. In La Floresta the acceptance is greater and this could be due to a higher density which leads to agreater acceptance. The population of Castelldefels rejects some of the most effective management measures (Graph 5).Image 3: A cat and a wild boar eating cat food 11% 5%75%9%What do you think that should be done with a boar that has caused injuries or accidents in an urban area?NothingCapture andsacrificeCapture and returnto the mountainCapture and keep incaptivityGraph 5: Survey result

Study of an urban wild boar population in Castelldefels

https://ddd.uab.cat/pub/tfg/2017/179915/TFG_aperlaspuente_poster.pdf

Study of an urban wild boar population in Castelldefels

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