EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES
EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES
European Journal of Environmental Sciences nabízí původní recenzované články z oblasti environmentálních věd, mnohdy inter- a transdisciplinární povahy se zvláštním zřetelem na evropské problémy. Časopis rovněž publikuje kritické shrnující texty a přehledy situace v oblasti ochrany životního prostředí v konkrétních regionech a zemích. Zaměřuje se na širokou škálu témat, jako například přímé a nepřímé interakce živých a neživých složek životního prostředí, interakce s lidskou společností nebo environmentální udržitelnost.

EUROPEAN JOURNAL OF ENVIRONMENTAL SCIENCES, Vol 1 No 2 (2011), 7–17

Revealing the decline and expansion of orchids of NW European Russia

Petr G. Efimov

DOI: https://doi.org/10.14712/23361964.2015.42
zveřejněno: 23. 02. 2012

Abstract

A new approach to reveal the dynamics of taxa on incompletely investigated territories was developed. The decline/expansion rate of orchids in the North Western part of European Russia (Leningrad, Novgorod and Pskov Regions, an area approx. 195,000 km2) was estimated using this method. The method is based on comparison of numbers of grid cells where a certain species was recorded in various time intervals using specially designed software. More than 9000 records were used, however the territory remained insufficiently and unevenly studied both spatially and over time. The study revealed a statistically significant (p < 0.01) decrease for Coeloglossum viride, Corallorhiza trifida, Cypripedium calceolus, Gymnadenia conopsea, Herminium monorchis, Malaxis monophyllos, Neotinea ustulata and Orchis militaris and a significant increase for Dactylorhiza baltica, D. fuchsii and Platanthera chlorantha. In several taxa, the trend was changed over the time. Of them, Gymnadenia conopsea displayed significant decline only since the middle of XX century, and Orchis militaris and Epipactis atrorubens decreased significantly only in the end of XIX and the beginning of XX century. The reasons for these patterns of dynamics were discussed. Parallels between the dynamics of orchids and land use in different periods of time in Russia are provided.

klíčová slova: Orchidaceae; dynamics of plant species; North-West European Russia

Creative Commons License
Revealing the decline and expansion of orchids of NW European Russia is licensed under a Creative Commons Attribution 4.0 International License.

210 x 297 mm
vychází: 2 x ročně
cena tištěného čísla: 150 Kč
ISSN: 1805-0174
E-ISSN: 2336-1964

Ke stažení