Abinieku sugu daudzveidība un nārsta ūdenstilpes Aizsargājamo ainavu apvidū „Ādaži”
Date
2015
Authors
Supe, Laura
Journal Title
Journal ISSN
Volume Title
Publisher
Latvijas Universitāte
Abstract
Darba ietvaros veikti 5 abinieku sugu (Rana arvalis; Rana lessonae; Epidalea calamita; Pelobates fuscus; Triturus vulgaris) iespējamo nārstošanas vietu apsekojumi Ādažu poligonā, kur notiek militārās apmācības. Darba mērķis: izpētīt ūdenstilpju ekoloģiskās īpatnības un analizēt, kādi faktori veido sugu nārsta nišas.
Lauka darbi veikti Ādažu poligona C sektorā, kā parauglaukumus ieviešot apsekotās ūdenstilpes. Apkopota informācija par ūdenstilpju koordinātēm, lielumu, dziļumu, veģetāciju un tajā sastopamajiem abiniekiem.
Galvenie rezultāti: izdalās faktori, kas liecina par katras sugas specifiskumu: T. vulgaris - ūdenstilpju dziļums; P.fuscus - makrofītu aizaugums (%); R.lessonae – grīšļu un dūņu segums (%); R.arvalis – kopējais aizaugums (%) un dziļums; E.calamita – mazs kopējais aizaugums (%) un smilšaina grunts. Ādažu poligonā ir pietiekami daudzveidīgi apstākļi, lai abinieku sugām nodrošinātu nārstošanas nišas.
For this work was studied potential spawning places of 5 amhibian species (Rana arvalis; Rana lessonae; Epidalea calamita; Pelobates fuscus; Triturus vulgaris) in the firing range “Ādaži”. The aim of this research was: to find out specific ecological characters of water basins and analyse factors which form the breeding niche of amphibians. Field has been made at C sector of the landfill, as sampling plots used ponds, which have been founded. The information about coordinates, size, depth, vegetation and the common amphibians of pond was collected. The main results: in this research was approved that there are factors which indicate specificity of species: P.fuscus – overgrowth of macrophytes (%); R.lessonae – cover of sedge and sludge (%); R.arvalis – total overgrowth (%) and depth; E.calamita – pure total overgrowth (%) and sandy soil. There are enough variable conditions to provide breeding niches for each species of amphibian in the firing range “Ādaži”.
For this work was studied potential spawning places of 5 amhibian species (Rana arvalis; Rana lessonae; Epidalea calamita; Pelobates fuscus; Triturus vulgaris) in the firing range “Ādaži”. The aim of this research was: to find out specific ecological characters of water basins and analyse factors which form the breeding niche of amphibians. Field has been made at C sector of the landfill, as sampling plots used ponds, which have been founded. The information about coordinates, size, depth, vegetation and the common amphibians of pond was collected. The main results: in this research was approved that there are factors which indicate specificity of species: P.fuscus – overgrowth of macrophytes (%); R.lessonae – cover of sedge and sludge (%); R.arvalis – total overgrowth (%) and depth; E.calamita – pure total overgrowth (%) and sandy soil. There are enough variable conditions to provide breeding niches for each species of amphibian in the firing range “Ādaži”.
Description
Keywords
Bioloģija , Ādažu poligons , abinieki , nārsta ūdenstilpju nišas , P.fuscus , T.vulgaris