Wyniki wyszukiwania

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Seed predation patterns favor the regeneration of dominant species in forest gaps compared with the understory in an oak-pine mixed forest

100%

Yu F., Shi X., Wang D., Wang T., Yi X., Lou Y.

Acta Theriologica

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2014

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tom 59

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nr 4

Recent studies have demonstrated the higher likelihood of regeneration in forest gaps compared with the understory for the dominant species in pine-oak mixed forest. Here, we tested whether rodent seed predation or dispersal was beneficial for gap regeneration. We tracked the seed predation and dispersal of Quercus aliena var. acuteserrata and Pinus armandii using coded plastic tags in the forest understory close to gaps. Our results demonstrated that the proportions of initial buried seeds of both species were significantly more abundant in the forest understory compared with gaps. After seed caching, however, significantly lower proportions of the seeds of both species survived in the forest understory compared with gaps during the 30-day observation period. The final survival proportions of the seeds cached in the forest understory were lower than those cached in the gaps the next spring, which indicated that small rodents rarely retrieved scatter-hoarded seeds from forest gaps. Our findings suggest that rodent seed predation patterns contribute to the regeneration of the dominant species in gaps compared with the understory in a pine-oak mixed forest. In the study area, reforestation usually involves planting seedlings but direct sowing in forest gaps may be an alternative means of accelerating forest recovery and successional processes.

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Formation of bird communities in the forest sample plots undergoing the action of industrial pollution in the Ojcow National Park

100%

Tomek T.

Acta Zoologica Cracoviensia

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1992-1993

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tom 35

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nr 2

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Winter bird communities in a managed mixed oak-pine forest [Niepolomice Forest, Southern Poland]

100%

Skorka P., Wojcik J. D.

Acta Zoologica Cracoviensia

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2003

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tom 46

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nr 1

Winter bird communities in a managed mixed oak-pine forest (Niepołomice Forest, southern Poland) were studied during winters the 1996/1997, 1998/1999, and 2000/2001 using the line-transect method. The transect (9.5 km long, 100 m wide) was conducted through three habitats: forest edge, mature, and young stands. The authors noted 5,764 individuals within the transect belonging to 33 bird species. The largest number of species was noted in mature stands – 27 (mean density: 34.0 inds/10 ha), then at the forest edge – 24 (19.4 inds/10 ha), and 18 species in young stands (25.2 inds/10 ha). The density of birds varied between winters and decreased during their course. The density of plant-eaters was significantly lower than that of invertebrate-eaters, but the total biomass of these groups did not differ. Plant-eater biomass was significantly higher in mature stands and at the forest edge than in young stands. Invertebrate-eater density was considerably lower at the forest edge, but the biomass of this trophic guild did not differ significantly among habitats. Plant-eater biomass was significantly lower during winter 1998/1999 and it is supposed that this variation in plant-eater density affects the most total variation in bird communities in the Niepołomice Forest. The authors’ results indicate that old stands are probably the most favourable habitat for some small birds in winter.

Ograniczanie wyników

2 Acta Zoologica Cracoviensia

1 Acta Theriologica

1 Lou Y.

1 Shi X.

1 Skorka P.

1 Tomek T.

1 Wang D.

1 Wang T.

1 Wojcik J. D.

1 Yi X.

1 Yu F.

1 2014

1 2003

1 1993

Seed predation patterns favor the regeneration of dominant species in forest gaps compared with the understory in an oak-pine mixed forest

Formation of bird communities in the forest sample plots undergoing the action of industrial pollution in the Ojcow National Park

Winter bird communities in a managed mixed oak-pine forest [Niepolomice Forest, Southern Poland]