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June 2015, № 6 (181)

Kapustina N.V., Egorova N.Yu., Egoshina T.L. STATUS OF DACTYLORHIZA FUCHSII (DRUCE) SOO COENOPOPULATIONS IN "BYLINA" STATE NATURE RESERVE10 coenopopulations (CP) of Dactylorhiza fuchsii (Druce) Soo were investigated in middle-taiga subzone of Kirov region within the area of "Bylina" State Nature Reserve. It was shown that D. fuchsii is found in forest communities of Vaccinio-Piceetea class. the species is predominantly found in sparse linden-spruce and also aspen-birch and spruce-birch Majanthemum herbaceous forests. 33 species are marked in herbaceous-undershrub layer of phytocoenoses. Dominant species are:Vacciniummyrtillus, Vacciniumvitis-idaea, Lathyrusvernus, Rubussaxatilis, Solidagovirgaurea, Oxаlisacetosеlla, Majanthemumbifolium, Melicanutans, Viciasylvatica, Poanemoralis. D. fuchsia onthogeny consists of 2 ontogenetic periods (pre-productive, productive) and 4 ontogenetic states (juvenile, immature, virgin, productive). All studied CP are incomplete, individuals of pre-productive group of immature ontogenetic state prevail. Basic ontogenetic spectre is ancipital with local maximum in immature individuals group. The part of productive individuals varied from 7.7 to 100 % in the investigated CP. The following morphometric parameters points are given — sprout length, inflorescence length, parameters of the first leaf (length, width, number of veins). The analyses of basic morphometric features of productive individuals showed that the highest plants were found incowberry-blueberry spruce-linden forest on an overgrowing runway. The estimation of parameterscarried out on pooled data of studied CP demonstrated high level of variability. The least variable features of productive individuals of D. fuchsia are the width of the first leaf and inflorescence length (3.4 and 8 % correspondingly). Maximum variability level was marked for sprout length (62 %). The range of integrable coefficient (SC) forD. Fuchsia is between 1.6 and 2.8. The status of 6 coenopopulations of D. fuchsia is estimated as "close to threatened". One CP is in satisfactory condition which is determined by high share of productive individuals and maximum density. The rest of the coenopopulations are in the state "depending on protection". For that matter it is recommended to monitor the status of all coenopopulations. Key words: Dactylorhiza fuchsii, coenopopulation, demographic characteristics, age structure, morphometric parameters.


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About this article

Authors: Kapustina N.V., Egorova N.Yu., Egoshina T.L.

Year: 2015

Sergey Aleksandrovich

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