Abstract

The Olekminsky Natural Reserve is composed of four types of lake land, six types of river land and two types of wetlands. The wetlands can be classified into four types of spatial complexes. The main types of forest habitats may be incorporated into six types of land. Forest complex functional forms in the reserve are characterized by four types. In accordance with the predominance of land types and typological complexes, the territory can be divided into four areas.

Abstract

The goal of the Gas Research Institute Wetland Corridors Program is to document impacts of existing pipeline on the wetlands they traverse. To accomplish this goal, 12 existing wetland crossings were surveyed. These sites varied in elapsed time since pipeline construction, wetland type, pipeline installation techniques, and night of-way (ROW) management practices. This report presents the results of a survey conducted over the period of August 12-13, 1991, at the Bayou Grand Cane crossing in De Soto Parish, Louisiana, where a pipeline constructed three years prior to the survey crosses the bayou through mature bottomland hardwoods. The sit was not seeded or fertilized after construction activities. At the time of sampling, a dense herb stratum (composed of mostly native species) covered the 20-m-wide ROW, except within drainage channels. As a result of the creation of the ROW, new habitat was created, plant diversity increased, and forest habitat became fragmented. The ROW must be maintained at an early stage of succession to allow access to the pipeline however, impacts to the wetland were minimized by decreasing the width of the ROW to 20 m and recreating the drainage channels across the ROW. The canopy trees on the ROW`s edge shaded partmore » of the ROW, which helped to minimize the effects of the ROW.« le Document type: Report