Growth dynamics of Dracaena cinnabari under controlled conditions as the most effective way to protect endangered species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F17%3A43911903" target="_blank" >RIV/62156489:43410/17:43911903 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.sjbs.2015.09.011" target="_blank" >https://doi.org/10.1016/j.sjbs.2015.09.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sjbs.2015.09.011" target="_blank" >10.1016/j.sjbs.2015.09.011</a>

Result language

angličtina

Original language name

Growth dynamics of Dracaena cinnabari under controlled conditions as the most effective way to protect endangered species

Original language description

Dracaena cinnabari Balf. fil. is an endangered endemic species growing on the Yemeni island of Soqotra. Dracaena woodlands are considered as one of the oldest forest communities on Earth. Uncontrolled grazing unfortunately caused a lack of naturally occurring regeneration. Our two-year research was focused on the growth dynamics of Dracaena seedlings from two separate populations. One hundred of germinated seeds from two different altitudes from the island were sown and planted under the same conditions. Average increment and difference between the growth dynamics of plants from the two localities were investigated. The observed data on this plant species revealed very interesting, hitherto unknown results. (1) The seedlings germinated within a time period from four to ten weeks. Germination rate was 90% on the Firmihin highland plateau and 78% on the Scand Mountain. (2) Average plant length from both localities was almost the same (24.9 cm) at the end of measurement. Differences in values between the two populations proved as non-significant. (3) A significant difference was found in the number of leaves and in the sum of lengths of all leaves on one plant. While the seedlings from Firmihin featured a wide spreading above-ground part with a large number of leaves, the plants from Scand invested more energy into faster leaves elongation rate. (4) Growth dynamics reflected seasonal changes. Increments were slower or ceased during the period of vegetative rest from autumn to spring. (5) Average mortality rate was 13%. Most of the plants died during the period of vegetative rest. Further study on germination and regeneration under artificial conditions seems like the only way to prevent species extinction.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40102 - Forestry

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Saudi Journal of Biological Sciences

ISSN

1319-562X

e-ISSN

—

Volume of the periodical

24

Issue of the periodical within the volume

7

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

1445-1452

UT code for WoS article

000413736800001

EID of the result in the Scopus database

2-s2.0-84945529571