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Post-fire succession on abandoned fields in coniferous forest habitat [Nord-East Poland]

100%

Kwiatkowska-Falinska A. J.

Acta Societatis Botanicorum Poloniae

2008

tom 77

nr 3

245-254

In July, 1992, fire swept through the Jelonka Reserve (52o35'33"N; 23o22'10"E). Litter, herbs layer and juniper shrubs were razed and the tree trunks of Pinus sylvestris and Populus tremula damaged, which resulted in their death the following year. Five research plots of 25 m2 each were established in the post-fire area. The species present there and their degrees of coverage were listed on the Londo scale between 1993 and 2002. The calculation of average degrees of coverage for individual populations allowed for the establishing of a chronological pattern of post-fire succession. The following findings have been made: 1) the primary function in colonization belongs to species of guerilla strategy of growth whose dormant buds survived fire underground (Holcus mollis, Calluna vulgaris and Populus tremula) or phalanx strategy of growth (Corynephoms canescens); 2) the dominants of the initial succession stage are perennial grasses, not therophytes; 3) the spatial pattern of succession is influenced by the occurrence of H. mollis or C. canescens in a particular location; 4) the initial stage terminates with the occurrence and further growth of C. vulgaris clumps; the post-fire succession in the Jelonka Reserve attained a brushwood stage faster in comparison to secondary succession, formerly triggered by the cessation of cultivation on arable land.

Species richness and abundance of insects during post-fire succession of a Pinus brutia forest in Mediterranean region

80%

Kaynas B. Y., Gurkan B.

Polish Journal of Ecology

2008

tom 56

nr 1

In the Marmaris National Park (located on the Mediterranean coast of SW Turkey) mostly covered with Pinus brutia forests, four sites were selected to study the postfire successional trends in vegetation and insect communities. The sites represented: 1, 5, and 21 years after fire as well as control site (more than 45 years after fire). On the study plots (0.5 ha) the insects were collected with the sweep net swung along three transects each of 100 m length, in monthly intervals between August 2000 and September 2001. The number of plant species decreased from 41 to 32 along succession, as well as the number of stage-specific species but the mean height of vegetation increased with successional stage. The abundance and species richness of herbivorous insects decreased along succession as well as two main herbivore groups – xylophagous and sap-feeders. However, no major changes were found between the sites in terms of abundance or species richness of predators. This decrease in herbivorous forms may be a result of changes in the plant architecture and vegetation structure between post-fire successional stages.

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Polish Journal of Ecology

1 Gurkan B.

1 Kaynas B. Y.

1 Kwiatkowska-Falinska A. J.

2 2008

Wyniki wyszukiwania

Post-fire succession on abandoned fields in coniferous forest habitat [Nord-East Poland]

Species richness and abundance of insects during post-fire succession of a Pinus brutia forest in Mediterranean region