TY - JOUR

T1 - Seeds distribution at the beginning of disturbed lands colonization: Influence of relief and season.

AU - Сумина, Ольга Ивановна

AU - Копцева, Елена Михайловна

PY - 2019

Y1 - 2019

N2 - Distribution of viable seeds on the bare ground slope in a sand quarry located in the vicinity of Saint-Petersburg was studied in relation to the relief of the ground surface, species composition of pioneer communities and surrounding vegetation, as well as the timing of a growing season. Seeds were found even on bare ground and poorly vegetated sites. Ground contains three times more seeds in autumn than in early summer. Most of seeds belonged to perennial grasses (mainly anemochorous, apophytes, and weeds), with a few coming from other life-forms (from annuals to trees), which were spread in the quarry or in the surrounding vegetation. Seeds concentrated on the slope, their number was the lowest in the quarry bottom in both observation periods, since conditions favored to plant germination there. The microrelief of the ground surface can also influence seed distribution: in June, viable seeds mostly located in depressions. We suppose that in dissemination period, seeds of anemochorous plants concentrate on

AB - Distribution of viable seeds on the bare ground slope in a sand quarry located in the vicinity of Saint-Petersburg was studied in relation to the relief of the ground surface, species composition of pioneer communities and surrounding vegetation, as well as the timing of a growing season. Seeds were found even on bare ground and poorly vegetated sites. Ground contains three times more seeds in autumn than in early summer. Most of seeds belonged to perennial grasses (mainly anemochorous, apophytes, and weeds), with a few coming from other life-forms (from annuals to trees), which were spread in the quarry or in the surrounding vegetation. Seeds concentrated on the slope, their number was the lowest in the quarry bottom in both observation periods, since conditions favored to plant germination there. The microrelief of the ground surface can also influence seed distribution: in June, viable seeds mostly located in depressions. We suppose that in dissemination period, seeds of anemochorous plants concentrate on

KW - natural recovery

KW - pioneer vegetation

KW - relief

KW - safe sites

KW - seasonal dynamics

KW - seed bank

KW - viable seeds

KW - natural recovery

KW - pioneer vegetation

KW - relief

KW - safe sites

KW - seasonal dynamics

KW - seed bank

KW - viable seeds

M3 - Article

SP - 48

EP - 63

JO - Vestnik Tomskogo Gosudarstvennogo Universiteta, Biologiya

JF - Vestnik Tomskogo Gosudarstvennogo Universiteta, Biologiya

SN - 1998-8591

IS - 46

ER -