Do czego służą badania na stałych powierzchniach w Białowieskim Parku Narodowym?

Autorzy

• Andrzej Bobiec Uniwersytet Rzeszowski, Wydział Biologiczno-Rolniczy, Katedra Agroekologii, ul. M. Ćwiklińskiej 1a, 35-601 Rzeszów
  Tel. +48 17 8721767, e-mail: a_bobiec@ur.edu.pl

Abstrakt

The purpose of the strictly protected area of the Białowieża National Park (BNP) established in early 1900s, was to protect a compact block of the Białowieża forest from any direct human influence and activity. Its founders considered it a „laboratory of nature.” In 1936, five rectangular plots with a total area of ca. 15.5 ha (ca. 0.3% of the BNP) were set up for regular monitoring of stand development with regards to the initial state and variability of soil conditions. During the first 76 years of the project, a steady increase in the proportion of hornbeam and lime tree at the expense of shade-intolerant species was observed. This trend has been interpreted by the researchers involved in the monitoring of the permanent BNP plots to constitute a biodiversity-threatening development caused by preservation efforts. Such an interpretation has been widely incorporated in the public debate by political authorities and the forestry sector. In this critical article I challenge the major arguments presented by the key expert in silviculture, prof. B. Brzeziecki. My criticism is directed at the methodological approach as well as at the data interpretation.

Słowa kluczowe

• ecological disturbances
• ecological history
• plots' representativeness
• spatial scale
• spruce bark beetle outbreak
• stand dynamics