Detailed Information on Publication Record
2007
Plant species richness in continental southern Siberia: effects of pH and climate in the context of the species pool hypothesis.
CHYTRÝ, Milan, Jiří DANIHELKA, Nikolai ERMAKOV, Michal HÁJEK, Petra HÁJKOVÁ et. al.Basic information
Original name
Plant species richness in continental southern Siberia: effects of pH and climate in the context of the species pool hypothesis.
Name in Czech
Druhová bohatost rostlin na kontinentální jižní Sibiři: vliv pH a klimatu v kontextu species pool hypotézy.
Authors
CHYTRÝ, Milan (203 Czech Republic, guarantor, belonging to the institution), Jiří DANIHELKA (203 Czech Republic, belonging to the institution), Nikolai ERMAKOV (643 Russian Federation), Michal HÁJEK (203 Czech Republic, belonging to the institution), Petra HÁJKOVÁ (203 Czech Republic, belonging to the institution), Martin KOČÍ (203 Czech Republic, belonging to the institution), Svatava KUBEŠOVÁ (203 Czech Republic, belonging to the institution), Pavel LUSTYK (203 Czech Republic), Zdenka OTÝPKOVÁ (203 Czech Republic, belonging to the institution), Denis POPOV (643 Russian Federation), Jan ROLEČEK (203 Czech Republic, belonging to the institution), Marcela ŘEZNÍČKOVÁ (203 Czech Republic), Petr ŠMARDA (203 Czech Republic, belonging to the institution) and Milan VALACHOVIČ (703 Slovakia)
Edition
Global ecology and biogeography, 2007, 1466-822X
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 4.435
RIV identification code
RIV/00216224:14310/07:00019578
Organization unit
Faculty of Science
UT WoS
000248959300012
Keywords in English
Calcicole/calcifuge; forest-steppe; plant community; Pleistocene environments; precipitation; soil acidity; tundra; vascular plants
Tags
Tags
International impact, Reviewed
Změněno: 23/9/2012 13:40, prof. RNDr. Milan Chytrý, Ph.D.
V originále
Aim: Many high-latitude floras contain more calcicole than calcifuge vascular plant species. The species pool hypothesis explains this pattern through an historical abundance of high-pH soils in the Pleistocene and an associated opportunity for the evolutionary accumulation of calcicoles. To obtain insights into the history of calcicole/calcifuge patterns, we studied species richness-pH-climate relationships across a climatic gradient, which included cool and dry landscapes resembling the Pleistocene environments of northern Eurasia. Location: Western Sayan Mountains, southern Siberia. Methods: Vegetation and environmental variables were sampled at steppe, forest and tundra sites varying in climate and soil pH, which ranged from 3.7 to 8.6. Species richness was related to pH and other variables using linear models and regression trees. Results: Species richness is higher in areas with warmer winters and at medium altitudes that are warmer than the mountains and wetter than the lowlands. In treeless vegetation, the species richness-pH relationship is unimodal. In tundra vegetation, which occurs on low-pH soils, richness increases with pH, but it decreases in steppes, which have high-pH soils. In forests, where soils are more acidic than in the open landscape, the species richness-pH relationship is monotonic positive. Most species occur on soils with a pH of 6-7. Main conclusions: Soil pH in continental southern Siberia is strongly negatively correlated with precipitation, and species richness is determined by the opposite effects of these two variables. Species richness increases with pH until the soil is very dry. In dry soils, pH is high but species richness decreases due to drought stress. Thus, the species richness-pH relationship is unimodal in treeless vegetation. Trees do not grow on the driest soils, which results in a positive species richness-pH relationship in forests. If modern species richness resulted mainly from the species pool effects, it would suggest that historically common habitats had moderate precipitation and slightly acidic to neutral soils.
In Czech
pH na kontinentální jižní Sibeři je silně negativně korelováno se srážkami a druhová bohatost je určována protisměrnými účinky těchto dvou proměnných. Druhová bohatost se zvyšuje s pH, pokud půda není příliš suchá. U suchých půd je pH vysoké, ale druhová bohatost se snižuje vlivem stresu suchem. Vztah druhové bohatosti a pH je proto v bezlesé vegetaci unimodální. Na nejsušších půdách nerostou stromy, což má za následek, že u lesů je vztah pH/druhová bohatost pozitivní. Pokud je současná druhová bohatost důsledkem velikosti species pool, zdá se, že v minulosti byla běžná stanoviště s nižšími srážkami a mírně kyselými až neutrálními půdami.
Links
| IAA6163303, research and development project |
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| MSM0021622416, plan (intention) |
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