Botanica Pacifica. A journal of plant science and conservation 2024. 13(1):179-182
Article first published online: 02 DEC 2023 | DOI: 10.17581/bp.2024.13104
Biomass of Dendrosenecio keniodendron leaves in the high mountains of Kenya almost corresponds to their annual productivity
Vladimir G. Onipchenko
,
David Mwangi ,
Aliy M. Kipkeev ,
Natalia A. Kopylova &
Tatiana G. Elumeeva Lomonosov Moscow State University, Faculty of Biology, Dept. Ecology and Plant Geography, Moscow, Russia
In the high mountains of the Mount Kenya (tropical Africa) the leaf life span of the dominant species of rosette trees Dendrosenecio keniodendron was estimated using observations on marked leaves. The intervals between the beginning of leaf expansion and its full death, between the beginning of expansion and the death of 50% of its area, and between 50% leaf length expansion and the 50 % leaf area death were 366±8, 326±18 and 284±17 days correspondingly (mean ± standard error, n=7). As the full leaf life span lasted approximately one year, leaf biomass of this species is considered to be an adequate assessment of its annual production.
Онипченко В.Г., Мванги Д., Кипкеев А.М., Копылова Н.А., Елумеева Т.Г. Биомасса листьев Dendrosenecio keniodendron в высокогорьях Кении примерно соответствует их годичной продукции.. В высокогорьях горы Кения (тропическая Африка) определена длительность жизни листьев доминирующего вида розеточных деревьев Dendrosenecio keniodendron методом наблюдений за мечеными листьями. Время от начала развертывания до полного отмирания, от начала развертывания до отмирания 50 % поверхности листа и от 50 % развертывания до 50 % отмирания составило 366±8, 326±18 и 284±17 дней соответственно (среднее и его ошибка, n=7). Поскольку полное время жизни листа составило около года, биомасса листьев этого вида может служить адекватной оценкой его годичной продукции.
Keywords: afroalpine habitats, rosette trees, leaf life span, афроальпийские местообитания, розеточные деревья, длительность жизни листа
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