Understorey plant species richness and composition in metropolitan forest archipelagos: Effects of forest size, adjacent land use and distance to the edge

Guirado M., Pino J., Rodà F. (2006) Understorey plant species richness and composition in metropolitan forest archipelagos: Effects of forest size, adjacent land use and distance to the edge. Global Ecology and Biogeography. 15: 50-62.
Enllaç
Doi: 10.1111/j.1466-822X.2006.00197.x

Resum:

Aim: To address the relative role of adjacent land use, distance to forest edge, forest size and their interactions on understorey plant species richness and composition in perimetropolitan forests. Location: The metropolitan area of Barcelona, north-eastern Spain. Methods: Twenty sampling sites were distributed in two forest size-categories: small forest patches (8-90 ha) and large forest areas (> 18,000 ha). For each forest-size category, five sites were placed adjacent to crops and five sites adjacent to urban areas. Vascular plant species were recorded and human frequentation was scored visually in 210 10 ×10 m plots placed at 10, 50 and 100 m from the forest edge, and additionally at 500 m in large forest areas. Plant species were grouped according to their ecology and rarity categories. A nonmetric multidimensional scaling (NMS) ordination was carried out to detect patterns of variation in species assemblage, and to explore the relationships between these patterns and the richness of the species groups and the studied factors. Factorial ANOVAS were used to test the significance of the studied factors on the richness of species groups. Relationships between human frequentation and the studied variables were assessed through contingency tables. Results: Forest-size category was the main factor affecting synanthropic species (i.e. those thriving in man-made or man-disturbed habitats). Synanthropic species richness decreased with increasing distance from the forest edge and, when forests were adjacent to crops, it was higher in small forest patches than in large forest areas. Richness of rare forest species was lower in small forest patches than in large forest areas when forests were adjacent to urban areas. Richness of common forest species and of all forest species together were higher close to the forest edge than far from it when forests were adjacent to urban areas. Forests adjacent to urban areas were more likely to experience high human frequentation, particularly in those plots nearest to the forest edge. Main conclusions: Forest-size category and adjacent land use were the most important factors determining species richness and composition. The preservation of large forests adjacent to crops in peri-urban areas is recommended, because they are less frequented by humans, are better buffered against the percolation of nonforest species and could favour the persistence of rare forest species. © 2006 Blackwell Publishing Ltd.

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Land Cover Changes in Europe from the 50’ies.

Gerard F, Olschofsky K, Köhler R, Mücher S, Hazeu G, Pino J, Luque S, Halada L, Bugar G, Gregor M (2006) Land Cover Changes in Europe from the 50’ies. University of Hamburg. ISBN: 80-89088-46-5.

Linking plant invasions to global environmental change. In: J. Canadell, D. Pataki, L. Pitelka. Terrestrial ecosystems in a changing world.

Vilà M, Corbin J D, Dukes J.S. , Pino J, Smith S D (2006) Linking plant invasions to global environmental change. In: J. Canadell, D. Pataki, L. Pitelka. Terrestrial ecosystems in a changing world. Springer, Berlin pp. 115-124.

A land suitability index for strategic environmental assessment in metropolitan areas.

Marull J, Pino J, Mallarach JM, Cordobilla MJ (2006) A land suitability index for strategic environmental assessment in metropolitan areas. Landscape and Urban Planning 81: 200-212 DOI:10.1016/j.landurbplan.2006.11.005

Paràmetres de l'aigua associats a canvis en l'alçada dels canyissars del Delta del Llobregat.

Pino J, de Roa E, Lucena JR (2006) Paràmetres de l'aigua associats a canvis en l'alçada dels canyissars del Delta del Llobregat. Spartina. Butlletí Naturalista del Delta del Llobregat. Núm. 5

La ecología del paisaje y la gestión de la matriz de espacios abiertos. En: El paisaje y la gestión del territorio. Criterios paisajísticos en la ordenación dl territorio y el urbanismo.

Pino J, Rodà F, Guirado M (2006) La ecología del paisaje y la gestión de la matriz de espacios abiertos. En: El paisaje y la gestión del territorio. Criterios paisajísticos en la ordenación dl territorio y el urbanismo. El paisaje y la gestión del territorio. Diputación de Barcelona. ISBN: B-37719-2006.

Invasibility of four plant communities in the Llobregat delta (Catalonia, NE of Spain) in relation to their historical stability

Pino J., Seguí J.M., Alvarez N. (2006) Invasibility of four plant communities in the Llobregat delta (Catalonia, NE of Spain) in relation to their historical stability. Hydrobiologia. 570: 257-263.
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Doi: 10.1007/s10750-006-0189-x

Resum:

Presence and cover of alien plants were analysed in relation to recent naturalness changes (1956-1999) in the Llobregat delta by means of GIS techniques and field surveys. Two land cover maps of 1956 and 1999 were generated by photo-interpretation of orthoimages and they were then reclassified into naturalness classes, defined as the degree of preservation of the pristine state. The resulting naturalness maps were combined in order to obtain a naturalness change map, which was used to design field sampling in four pristine communities: reedbeds, rushbeds, halophilous scrubs and fixed dune communities. Two study areas were selected for each community and three stability regimes (stable, semi-stable and non-stable) obtained from the naturalness change map. Five vegetation inventories were performed on average in each of these areas using the classical sigmatist method. Results showed a negative relationship between stability and invasibility, with several variations between communities. No alien species were found in stable areas of all communities. Alien species number, species percentage and relative cover increased from semi-stable to non-stable regimes in reedbeds and dune communities, indicating that reversion towards the climax reduces opportunities for alien establishment in these communities. In contrast, halophilous habitats such as rushbeds and scrubs did not exhibit significant differences between semi-stable and non-stable plots, probably because saline stress makes their invasion by alien plants difficult, even under disturbance. © Springer 2006.

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