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Mobile dune fixation by a fast-growing clonal plant: a full life-cycle analysis.

Li SL, Yu FH, Werger MJ, Dong M, During HJ, Zuidema PA - Sci Rep (2015)

Bottom Line: Elasticity analysis revealed that clonal propagation was the key contributor to population growth.The capacity of high clonal propagation and rapid population expansion in mobile dunes makes H. laeve a suitable species to combat desertification.Species with similar life-history traits to H. laeve are likely to offer good opportunities for stabilizing active dunes in arid inland ecosystems.

View Article: PubMed Central - PubMed

Affiliation: 1] State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China [2] Ecology &Biodiversity Group, Institute of Environmental Biology, Utrecht University, P.O. Box 80084, 3508 TB Utrecht, the Netherlands [3] Section of Ecology, Department of Biology, University of Turku, 20014 Turku, Finland.

ABSTRACT
Desertification is a global environmental problem, and arid dunes with sparse vegetation are especially vulnerable to desertification. One way to combat desertification is to increase vegetation cover by planting plant species that can realize fast population expansion, even in harsh environments. To evaluate the success of planted species and provide guidance for selecting proper species to stabilize active dunes, demographic studies in natural habitats are essential. We studied the life history traits and population dynamics of a dominant clonal shrub Hedysarum laeve in Inner-Mongolia, northern China. Vital rates of 19057 ramets were recorded during three annual censuses (2007-2009) and used to parameterize Integral Projection Models to analyse population dynamics. The life history of H. laeve was characterized by high ramet turnover and population recruitment entirely depended on clonal propagation. Stochastic population growth rate was 1.32, suggesting that the populations were experiencing rapid expansion. Elasticity analysis revealed that clonal propagation was the key contributor to population growth. The capacity of high clonal propagation and rapid population expansion in mobile dunes makes H. laeve a suitable species to combat desertification. Species with similar life-history traits to H. laeve are likely to offer good opportunities for stabilizing active dunes in arid inland ecosystems.

No MeSH data available.


Related in: MedlinePlus

Relations of vital rates with plant height for Hedysarum laeve in Mu Us Sandland during 2007–2008 (a, d, g) and 2008–2009 (b, c, e, f, h, i).Individuals in 2008 were presented as one group (b, e, h), but also divided into two groups as new recruited ramets (new) and ramets survived from previous years (old; c, f, i). Regression functions are described in Tables 1 and 2.
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f1: Relations of vital rates with plant height for Hedysarum laeve in Mu Us Sandland during 2007–2008 (a, d, g) and 2008–2009 (b, c, e, f, h, i).Individuals in 2008 were presented as one group (b, e, h), but also divided into two groups as new recruited ramets (new) and ramets survived from previous years (old; c, f, i). Regression functions are described in Tables 1 and 2.

Mentions: Ramet survival of H. laeve was generally very low; for example, individuals of 50 cm (the average ramet size) had a survival probability of less than 10% in both census periods (Table 1, Fig. 1a, b). Survival chance increased with ramet size. Large individuals (100–200 cm high) exhibited a considerably higher survival probability, particularly during the second census period (45.1–98.4%; Fig. 1b). Interestingly, newly recruited ramets had a higher survival rate than existing ramets (Table 2, Fig. 1c).


Mobile dune fixation by a fast-growing clonal plant: a full life-cycle analysis.

Li SL, Yu FH, Werger MJ, Dong M, During HJ, Zuidema PA - Sci Rep (2015)

Relations of vital rates with plant height for Hedysarum laeve in Mu Us Sandland during 2007–2008 (a, d, g) and 2008–2009 (b, c, e, f, h, i).Individuals in 2008 were presented as one group (b, e, h), but also divided into two groups as new recruited ramets (new) and ramets survived from previous years (old; c, f, i). Regression functions are described in Tables 1 and 2.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4355633&req=5

f1: Relations of vital rates with plant height for Hedysarum laeve in Mu Us Sandland during 2007–2008 (a, d, g) and 2008–2009 (b, c, e, f, h, i).Individuals in 2008 were presented as one group (b, e, h), but also divided into two groups as new recruited ramets (new) and ramets survived from previous years (old; c, f, i). Regression functions are described in Tables 1 and 2.
Mentions: Ramet survival of H. laeve was generally very low; for example, individuals of 50 cm (the average ramet size) had a survival probability of less than 10% in both census periods (Table 1, Fig. 1a, b). Survival chance increased with ramet size. Large individuals (100–200 cm high) exhibited a considerably higher survival probability, particularly during the second census period (45.1–98.4%; Fig. 1b). Interestingly, newly recruited ramets had a higher survival rate than existing ramets (Table 2, Fig. 1c).

Bottom Line: Elasticity analysis revealed that clonal propagation was the key contributor to population growth.The capacity of high clonal propagation and rapid population expansion in mobile dunes makes H. laeve a suitable species to combat desertification.Species with similar life-history traits to H. laeve are likely to offer good opportunities for stabilizing active dunes in arid inland ecosystems.

View Article: PubMed Central - PubMed

Affiliation: 1] State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China [2] Ecology &Biodiversity Group, Institute of Environmental Biology, Utrecht University, P.O. Box 80084, 3508 TB Utrecht, the Netherlands [3] Section of Ecology, Department of Biology, University of Turku, 20014 Turku, Finland.

ABSTRACT
Desertification is a global environmental problem, and arid dunes with sparse vegetation are especially vulnerable to desertification. One way to combat desertification is to increase vegetation cover by planting plant species that can realize fast population expansion, even in harsh environments. To evaluate the success of planted species and provide guidance for selecting proper species to stabilize active dunes, demographic studies in natural habitats are essential. We studied the life history traits and population dynamics of a dominant clonal shrub Hedysarum laeve in Inner-Mongolia, northern China. Vital rates of 19057 ramets were recorded during three annual censuses (2007-2009) and used to parameterize Integral Projection Models to analyse population dynamics. The life history of H. laeve was characterized by high ramet turnover and population recruitment entirely depended on clonal propagation. Stochastic population growth rate was 1.32, suggesting that the populations were experiencing rapid expansion. Elasticity analysis revealed that clonal propagation was the key contributor to population growth. The capacity of high clonal propagation and rapid population expansion in mobile dunes makes H. laeve a suitable species to combat desertification. Species with similar life-history traits to H. laeve are likely to offer good opportunities for stabilizing active dunes in arid inland ecosystems.

No MeSH data available.


Related in: MedlinePlus