Habitat invasions by alien plants: A quantitative comparison among Mediterranean, subcontinental and oceanic regions of Europe

Chytrý M., Maskell L.C., Pino J., Pyšek P., Vilà M., Font X., Smart S.M. (2008) Habitat invasions by alien plants: A quantitative comparison among Mediterranean, subcontinental and oceanic regions of Europe. Journal of Applied Ecology. 45: 448-458.
Enllaç
Doi: 10.1111/j.1365-2664.2007.01398.x

Resum:

1. Although invasions by alien plants are major threats to the biodiversity of natural habitats, individual habitats vary considerably in their susceptibility to invasion. Therefore the risk assessment procedures, which are used increasingly by environmental managers to inform effective planning of invasive plant control, require reliable quantitative information on the extent to which different habitats are susceptible to invasion. It is also important to know whether the levels of invasion in different habitats are locally specific or consistent among regions with contrasting climate, flora and history of human impact. 2. We compiled a database of 52 480 vegetation plots from three regions of Europe: Catalonia (Mediterranean-submediterranean region), Czech Republic (subcontinental) and Great Britain (oceanic). We classified plant species into neophytes, archaeophytes and natives, and calculated the proportion of each group in 33 habitats described by the European Nature Information System (EUNIS) classification. 3. Of 545 alien species found in the plots, only eight occurred in all three regions. Despite this large difference in species composition, patterns of habitat invasions were highly consistent between regions. None or few aliens were found in environmentally extreme and nutrient-poor habitats, e.g. mires, heathlands and high-mountain grasslands. Many aliens were found in frequently disturbed habitats with fluctuating nutrient availability, e.g. in man-made habitats. Neophytes were also often found in coastal, littoral and riverine habitats. 4. Neophytes were found commonly in habitats also occupied by archaeophytes. Thus, the number of archaeophytes can be considered as a good predictor of the neophyte invasion risk. However, neophytes had stronger affinity to wet habitats and disturbed woody vegetation while archaeophytes tended to be more common in dry to mesic open habitats. 5. Synthesis and applications. The considerable inter-regional consistency of the habitat invasion patterns suggests that habitats can be used as a good predictor for the invasion risk assessment. This finding opens promising perspectives for the use of spatially explicit information on habitats, including scenarios of future land-use change, to identify the areas of highest risk of invasion. © 2007 The Authors.

Llegeix més

Quercus and Pinus cover are determined by landscape structure and dynamics in peri-urban Mediterranean forest patches

Guirado M., Pino J., Rodà F., Basnou C. (2008) Quercus and Pinus cover are determined by landscape structure and dynamics in peri-urban Mediterranean forest patches. Plant Ecology. 194: 109-119.
Enllaç
Doi: 10.1007/s11258-007-9278-9

Resum:

Successional dynamics in Mediterranean forests have been modulated by anthropogenic disturbances during thousands of years, especially in areas densely populated since ancient times. Our objective is to determine whether pine tree cover (early-successional species) and oak tree cover (late-successional species), used as a surrogate of successional stage of peri-urban fragmented forests in the Vallès lowlands (Catalonia, NE, Spain), are primarily determined by (1) climate and topography; (2) anthropogenic disturbances; (3) patch structure; or (4) patch dynamics from 1956 to 1993. Quercus spp. and Pinus spp. tree cover were separately recorded on 252 randomly selected plots of 100 m2, within forest patches ranging in size from 0.25 to 218 ha. Multiple linear regressions indicated that forest patch history is the most important variable determining oak and pine tree cover: new forest patches showed higher pine and lower oak tree cover than recently split patches (i.e. those that became fragmented from large forest areas after 1956). Patches already existing as such in 1956 (pre-existent patches) showed higher pine cover than recently split patches. Oak cover increased and pine cover decreased with increasing forest connectivity of the patch. Finally, highly frequented forests were related to high cover of pines. Climatic and topographic variables were not significant. We conclude that pine and oak cover in these peri-urban forests are mainly determined by recent patch dynamics, but also by the spatial pattern of patches. However, human-induced disturbance can modulate this as there is some evidence for pine being associated with a high human frequentation. © 2007 Springer Science+Business Media, Inc.

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Anàlisi preliminar de la percepció i la gestió de les invasions vegetals en espais naturals protegits de Catalunya.

Andreu J, Vilà M, Pino J (2008) Anàlisi preliminar de la percepció i la gestió de les invasions vegetals en espais naturals protegits de Catalunya. Butlletí de la Institució Catalana d’Història Natural 74: 145-164.

Regiones y hábitats más invadidos.

Vilà M, Corbin JD, Dukes JS, Pino J, Smith SD (2008) Regiones y hábitats más invadidos. Invasiones biológicas CSIC pp. 41-52.

Alien vascular Plants of Europe.

Pysek P, Lambdon PW, Arianoutsou M, Kühn I, Pino J, Winter M (2008) Alien vascular Plants of Europe. DAISIE, The Handbook of Alien Species in Europe. Springer Science + Business Media pp 43-61.

Aportacions de l’Índex de Connectivitat Ecològica a la planificació territorial i l’avaluació ambiental estratègica, en el context de les recerques i les polítiques de connectivitat ecològica a Catalunya.

Mallarach JM, Marull J, Pino J (2008) Aportacions de l’Índex de Connectivitat Ecològica a la planificació territorial i l’avaluació ambiental estratègica, en el context de les recerques i les polítiques de connectivitat ecològica a Catalunya. Documents d’Anàlisi Geogràfica 51: 113-128.

The loss of territorial efficiency: a landscape ecology analysis of the land-use changes in a West Mediterranean agriculture during the last 150 years (the Catalan Vallès county, 1853-2004).

Tello E, Marull J, Pino J (2008) The loss of territorial efficiency: a landscape ecology analysis of the land-use changes in a West Mediterranean agriculture during the last 150 years (the Catalan Vallès county, 1853-2004). Global Environment 2: 114-152.

El tratamiento del territorio como sistema: criterios ecológicos y metodologías paramétricas de análisis.

Tello E, Marull J, Pino J (2008) El tratamiento del territorio como sistema: criterios ecológicos y metodologías paramétricas de análisis. Ciudad y Territorio 157: 235-249.

Regiones y hábitats más invadidos. A: Vilà M. F. Valladares, A. Traveset, L. Santamaría y P. Castro (eds.). Invasiones Biológicas.

Pino J, Gassó N, Vilà M, Sol D (2008) Regiones y hábitats más invadidos. A: Vilà M. F. Valladares, A. Traveset, L. Santamaría y P. Castro (eds.). Invasiones Biológicas. CSIC-Divulgación. Madrid. Pp. 41-51.

Canvis en la superfície i el grau de fragmentació del bosc a la plana del Vallès entre els anys 1993 i 2000.

Pino J, Rodà F, Basnou C, Guirado M (2008) Canvis en la superfície i el grau de fragmentació del bosc a la plana del Vallès entre els anys 1993 i 2000. Documents d’Anàlisi Geogràfica 51: 59-77.

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