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Beavers lodges represent specific, zoogenic habitats. Their flora show some distinctive features differentiating them from the species composition of the areas surrounding the lodges. Studies were conducted in the Romincka Forest, in north-eastern Poland. Although lodges and their surroundings did not differ in the total number of vascular plants recorded in their area, the 40 beavers lodges studied had a significantly higher mean species richness, however half of the total species cover compared with the lodges’ surroundings. Species from the Lamiaceae, Polygonaceae and Asteraceae families were more often present in lodges rather than in their surroundings. Within the lodges there were more species tolerating disturbance (r strategy), more hemicryptophytes and therophytes, more species associated with eutrophic habitats and of neutral soil reaction. Aside from this, species from the Alnetea glutinosae, Bidentetea tripartiti, Scheutzerio- Caricetea, Artemisietea vulgaris, and Stellarietea mediae classes had a bigger share compared to lodges’ surroundings. Finally, there were also more euhemerobic species recorded in that habitat. By contrast, the communities which surround the lodges had a higher representation of stresstolerant species (s strategy), typical for mesotrophic habitats with acidic soils and more mesohemerobous and urbanophobous species. The above mentioned tendencies allowed to conclude that beavers’ lodges contribute to the increase in the diversity of habitats and subsequently may be regarded as an important factor influencing flora and vegetation biodiversity.
In temperate forest ecosystems, management is one of the most relevant factors that can drive the temporal pattern of species. As species in an ecosystem show susceptibility to stress and disturbance, it is useful to take into account the plant community “compositional dimension”, which derives from species behaviour and ecological attributes and provides information on the mechanisms underlying species assemblages. Taking into account the influence of environmental factors on species diversity and composition, in order to determine the most suitable ecological behaviour type of each species, the research aim was to generate a model for Ostrya carpinifolia coppiced woods (central Italy) that describes forest ecosystem regeneration after coppicing by the assessment of change in the composition of ecological behaviour types. Vascular species cover percentage, field data, soil data, light intensity at the undergrowth, dominant tree layer cover and time since last logging were recorded for 63 plots covering 400 m2 each (20 x 20 m), randomly selected within a set of homogeneous macro-environmental conditions. Low species richness is related to stressing factors (acid soil, high soil skeleton percentage), while high species richness is linked to high light intensity at the undergrowth level due to scarce canopy cover soon after coppicing. The driving forces affecting floristic composition, highlighted through multi-response permutation procedures (MRPP) were light intensity at the undergrowth, regenerative phase, dominant tree layer cover, acidity, presence/absence of outcropping rock or rock fragments and total nitrogen content. Six species groups, each one characterized by homogeneous ecological behaviour, were defined by indicator species analysis (ISA) and tested using bioindication values analysis. Floristic successional change, related to time since last coppicing, turned out to follow an ecological cycling process characterized by cyclical occurrence/disappearance of species belonging to the six groups.
Land use changes occurring in Europe in recent decades are generating important changes in the forest landscape characteristics and are having important effects on avian species richness and abundance. This is particularly important for some bird species of particular conservation concern that require heterogenous landscapes where breeding habitats are proximal to foraging habitats. Among these birds, the European Turtle Dove Streptopelia turtur is particularly important because of its marked population decline. In southern Europe, forest landscapes have been considered important breeding areas for Turtle Doves. We assessed the influence of the foraging area characteristics — distance to cereal crops and wild seed species abundance — and water availability on Turtle Dove breeding habitat suitability in a Mediterranean forest landscape in southern Spain. Forty-six point locations were surveyed during the spring of 2014 and 2015 on two nearby farms of a forest protected area. The average local abundance of Turtle Doves found at each point location was 1.25 ± 1.31 males, and it was significantly higher at the point locations closest to cereal crops, as well as at nesting sites where the wild seed species included in its local diet were abundant, especially Echium plantagineum. Distance to water in the studied range (average distance 475 m) did not show a significant effect on Turtle Dove local abundance, although the high availability of water in the study area could have a positive influence on the overall Turtle Dove breeding habitat suitability. To benefit Turtle Dove breeding habitat suitability, cultivated areas with cereals/legumes near those forest areas where Turtle Doves reproduce should be promoted. Likewise, the promotion of those herbaceous species that are locally important in the Turtle Dove diet, available, for example, through specific grazing management, should be taken into account when nesting habitat restoration is designed in forest areas, regardless of whether the distances to food resources are long.
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