Water availability and species identity control shrub colonization in abandoned semiarid steppes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43510%2F16%3A43910848" target="_blank" >RIV/62156489:43510/16:43910848 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.agee.2016.05.014" target="_blank" >http://dx.doi.org/10.1016/j.agee.2016.05.014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.agee.2016.05.014" target="_blank" >10.1016/j.agee.2016.05.014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Water availability and species identity control shrub colonization in abandoned semiarid steppes

Popis výsledku v původním jazyce

The increase in shrub cover and density is a widespread phenomenon in drylands worldwide. Its causes and consequences are complex and strongly idiosyncratic. Detailed knowledge of the rate of shrub colonization, and its abiotic and biotic drivers is crucial to fully understand and manage these areas. We used a set of aerial photographs (1956, 1978, 1985, 1998 and 2009) and field data to relate shrub patch dynamics, and abiotic and biotic properties of 27 abandoned steppes in SE Iberian Peninsula. Shrub patch density in 2009 ranged from 11 to 143 patches ha(-1), and increased by an average of similar to 180% between 1956 and 2009. Temporal changes in shrub patch density followed non-linear functions (monomolecular, logistic and exponential) describing early, gradual and late recruitment, respectively. Differences in shrub patch colonization rate were related to the identity of patch-forming species, but contingent on water availability. Total increases in shrub patch density were larger when patches were dominated by late colonizer species. Overall shrub patch dynamics was mostly related to the identity of patch-forming species and climatic conditions, and to a lesser extent physical factors such as aspect and rock cover. Given the sensitivity of patch-forming species to climatic conditions, new challenges for steppe management will emerge over the next decades. Species able to thrive under harsh conditions may increase their dominance at the expense of species adapted to less demanding conditions.

Název v anglickém jazyce

Water availability and species identity control shrub colonization in abandoned semiarid steppes

Popis výsledku anglicky

The increase in shrub cover and density is a widespread phenomenon in drylands worldwide. Its causes and consequences are complex and strongly idiosyncratic. Detailed knowledge of the rate of shrub colonization, and its abiotic and biotic drivers is crucial to fully understand and manage these areas. We used a set of aerial photographs (1956, 1978, 1985, 1998 and 2009) and field data to relate shrub patch dynamics, and abiotic and biotic properties of 27 abandoned steppes in SE Iberian Peninsula. Shrub patch density in 2009 ranged from 11 to 143 patches ha(-1), and increased by an average of similar to 180% between 1956 and 2009. Temporal changes in shrub patch density followed non-linear functions (monomolecular, logistic and exponential) describing early, gradual and late recruitment, respectively. Differences in shrub patch colonization rate were related to the identity of patch-forming species, but contingent on water availability. Total increases in shrub patch density were larger when patches were dominated by late colonizer species. Overall shrub patch dynamics was mostly related to the identity of patch-forming species and climatic conditions, and to a lesser extent physical factors such as aspect and rock cover. Given the sensitivity of patch-forming species to climatic conditions, new challenges for steppe management will emerge over the next decades. Species able to thrive under harsh conditions may increase their dominance at the expense of species adapted to less demanding conditions.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

—

Projekt

<a href="/cs/project/EE2.3.30.0017" target="_blank" >EE2.3.30.0017: Postdoktorandi v oborech biologických věd na MENDELU</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Agriculture, Ecosystems and Environment

ISSN

0167-8809

e-ISSN

—

Svazek periodika

228

Číslo periodika v rámci svazku

15 July

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

62-69

Kód UT WoS článku

000378455800007

EID výsledku v databázi Scopus

2-s2.0-84971260318