Artículos en Revistas-en

Resumen: Beach evening primrose Oenothera drummondii is a perennial plant native to the southern USA and adjacent parts of Mexico that invades coastal habitats in several countries. There are currently no accepted control methods. We conducted a seven-month controlled field trial using the glyphosate herbicide Roundup® Ultra Plus in the Odiel Marsh Nature Reserve, Huelva Province, southern Spain. Different herbicide concentrations were tested by knapsack spraying. We estimated the costs of treating an entire invaded nature reserve in southern Spain where Oenothera drummondii has invaded 123 ha of land. A dose of 20 g active ingredient/litre was the minimum effective dose for this species in coastal dunes. As new seedlings appeared after a single herbicide treatment, periodic treatments would be necessary to maintain the population level below an impact threshold. However, the total glyphosate input (710 kg active ingredient/year) to the Reserve for an indefinite period may give rise to social rejection, and demands for the assessment of ecotoxicological impact on native fauna, adjacent habitats and site uses before initiating control actions at full scale. The control costs of the entire 123 ha invaded area for two herbicide applications/year were estimated at €162,000/year (€1,317/ha/year). This includes materials (30% of total costs) and workers (70% of total costs). The study highlights the difficulties and constraints of controlling advanced stages of invasions.


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Abstract: The Thymus carnosus Boiss (Lamiaceae) is a small bush indigenous to the south-eastern coast of the Iberian Peninsula, listed as "in critical danger" in Andalusia and protected by the applicable legislation. The sandbar of El Rompido, on the coast of Lepe in Huelva, is home to the largest colony in Spain. The spread of retama (Retama monosperma) is a threat to its Preservation. This study describes the characteristics of T. carnosus at the sandbar of El Rompido in regards to its local distribution, robustness, sex-ratio, demographic, and accompanying plant community. Thymus carnosus grows preferentially on fixed dunes with herbaceous vegetation, between the leeside of the primary dune and the most mature coastal sage scrub. The abundance of T. carnosus varied among the colonies studies (n = 1136 and 226 individuals at colonies 1 and 2, respectively), associated with significant differences in the amount of Retama and the composition of accompanying vegetation. Colony 1, with a lower density of Retama, displayed a smaller size structure, with evidence of recruitment and a proportion of hermaphroditic individuals 3.3 times greater than females. For its part, Colony 2, immersed in a fixed dune colonised by mature retama and more closed-off, displayed a greater medium size, with a greater proportion of  females (hermaphrodites/females = 1.9), and without recruitment. Robustness was similar at both colonies. These results provide an updated knowledge of T. carnosus on the eastern edge of its natural distribution and serves as a basis for planning Preservation activities for the species as well as the recovery of its favourable habitats by the Regional Ministry for the Environment and Land Use, as part of the framework of the LIFE CONHABIT ANDALUCÍA project.

 

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Abstract: Evening primrose (Oenothera drummondii Hook) is a plant species native to the southern coast of North America and Mexico that has formed invasive prairies at habitats of European community interest at the Marismas del Odiel Natural Site (Huelva, South of Spain). We evaluate the extent of the invasion by creating a georeferenced densty map of the sandy environments of the site. The extent of the invasion in November of 2014 was 122.77 ha., which is a total of 30.2% of potentially-invadable areas (406.77 ha.) Oenothera drummondii colonises dune environments, with a preference for fixed dunes with herbaceous vegetation. The magnitude of the invasion and the biological characteristics of the species give rise to serious management difficulties, making it recommended to evaluate different control methods according to the current distribution.


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Congresos y Seminarios-en

Life Conhabit Andalucía participated in the European LIFE project meeting held in Zandvoort (Holland), from 15 to 17 June 2016. 

This meeting served for the exchange of management experiences in the framework of Life projects with actions focused on coastal and inland dune ecosystems. Results of 15 LIFE projects were presented. LIFE Conhabit Andalucía project presented the preliminary results of several control actions of invasive alien and competing native species that are being carried out in dunes of the coast of Huelva.

 

See the following documents:

Poster: Viability of the chemical control of Oenothera drummondii in Odiel Marshes Nature Reserve (southern Spain).
Poster: Control of prickly pear Opuntia dillenii in dune juniper thickets (Juniperus spp.) from Andalusia (southern Spain).
Poster: Clear-cutting of stone pine Pinus pinea plantations to preserve Natura 2000 wetland habitats from Doñana Natural Park (southern Spain).
Poster: Control of the native-invasive Retama monosperma in grey dunes from Andalusia (southern Spain): restoring the habitat of Thymus carnosus

LIFE CONHABIT ANDALUCÍA presented the project with special attention on the activities to be carried out in the province of Cadiz.

This biannual symposium brings together nature studies in all areas (administrators, researchers, naturalists) with a common interest: knowledge and Preservation of the natural heritage of the province of Cádiz.

  

See the following documents:

See Presentation

LIFE CONHABIT ANDALUCÍA participated by presenting the project to attendees of five of the seminars organised. 

The importance of the role of the Natura 2000 Network in the Preservation and sustainable development of Andalusia requires the reinforcement and consolidation of technical training activities that favour greater social involvement and adequate understanding on the part of people who, directly or indirectly, participate in their management, monitoring, and Preservation. The Directorate General of the Environment and Protected Areas has organised these sessions in each of the provinces of Andalusia.

 

ALMERÍA 

Date: 12th of November of 2015. 

Location: Salón de actos de la Delegación Territorial de Hacienda y Administración Pública (Calle Arapiles, nº 10-12)

 

MÁLAGA 

Date: 17th of November of 2015. 

Location: Salón de actos de la Delegación Territorial de medio Ambiente y Ordenación del territorio (Avenida de la Aurora, nº 47)

Edificio Servicios Múltiples.

 

CÁDIZ

Date: 18th of November of 2015

Location: Centro de Visitantes del Parque Natural Bahía de Cádiz. San Fernando.

 

HUELVA

Date: 20th of November of 2015. 

Location: Centro de Visitantes de Calatilla (Paraje Natural Marismas del Odiel).

Date: 30th of November of 2015. 

Location: CIECEMA (Avenida de la Juventud, nº 0. Almonte).

LIFE CONHABIT ANDALUCÍA participated with three communications, one orally and two in poster format. The oral presentation described the most important achievements of LIFE CONHABIT ANDALUCÍA. The posters displayed the preliminary results of two project actions: (Action A4): Viability of chemical control of Oenothera drummondii at the Odiel Natural Site (Huelva; S. of Spain): Estimation of the extension of the invasion and the minimum dose of herbicide; and Action C4): Recommendations for the management of the largest Spanish population of Thymus carnosus Boiss. Diagnosis of its state of conservation.

 

The purpose of this Conference was to communicate progress in regards to the Preservation of plant biodiversity, spanning themes as varied as molecular studies of plants, reproductive biology, and on-site/off-site Preservation activities, studies on demographics and dynamics of plant colonies and strategies for environmental management.

 

 

See the following documents:

VII Congreso BCP

Oenothera drummondii

Thymus carnosus Boiss

Noticias en Prensa-en

Materiales Conhabit-en

This Awareness and Communication Plan forms a fundamental part of the LIFE CONHABIT ANDALUCÍA Project. Conservation and improvement in priority habitats on the Andalusian coast. With the application of this Awareness and Communications Plan the achievement of the following objectives will be advanced:

- To convey the values and significances that the Natura 2000 Network has as a Heritage site and the presence of habitats and species of community interest status.
- To increase the level of knowledge and awareness of key sectors regarding the main threats that the coastal habitats present.
- To convey the social, economic and cultural benefits that the conservation of coastal habitats brings.
- To improve social attitude towards the measures of conservation related to the improvement and conservation of priority habitats.
- To promote the public image of the LIFE CONHABIT ANDALUCÍA project.
- To promote support and social participation in the LIFE CONHABIT ANDALUCÍA project.
 

[ENGLISH]“Un Litoral Con Raíces” pretende aproximar a los escolares a los hábitats litorales, comprender cuáles son las principales adaptaciones de la flora y reconocer nuestro papel en su conservación.

 

Guía Un Litoral con Raíces
Itinerarios Conhabit
Material Infantil
Material Primaria y Secundaria

Bases I Concurso Escolar de Murales 'Hábitats Litorales, tan cerca y tan lejos'.