Effect of Grazing and Drought on Seed Bank in Semiarid Patchy Rangelands of Northern Patagonia, Argentina

Funk, Flavia Alejandra; Loydi, Alejandro; Peter, Guadalupe; Distel, Roberto Alejandro

doi:10.1086/702661

Cited by 13 publications

(8 citation statements)

References 66 publications

(60 reference statements)

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“…Therefore, it can be supposed that shrubs may have different performances in producing and trapping seeds and could affect seed production by smaller species in their sub-canopy area. Nevertheless, our literature review showed that none of the studies (e.g., Bullock & Moy, 2004;Erfanzadeh et al, 2014;Funk et al, 2019;Giladi, Segoli, & Ungar, 2013;Niknam et al, 2018) has compared the effect of different species of shrubs, varying in architectures and features, on SSBs in the semiarid regions.…”

mentioning

confidence: 92%

“…It has been frequently been noted that shrubs act as 'fertile islands', since they have significant influences on habitat conditions. Shrubs have been shown to increase soil microbial functions (Chandregowda, Murthy, & Bagchi, 2018), enhance mycorrhizal colonization (Armenta Calderón, Moreno‐Salazar, Furrazola Gómez, & Ochoa‐Meza, 2019), alter runoff and sediment yields (García‐Ruiz, Nadal‐Romero, Lana‐Renault, & Beguería, 2013; Keesstra et al, 2016; Lu et al, 2019) and affect the soil seed bank (SSB; Funk, Loydi, Peter, & Distel, 2019; Niknam, Erfanzadeh, Ghelichnia, & Cerdà, 2018). They increase SSB under their canopies by trapping seeds or increasing seed production by sub‐canopy plants through ameliorating the environment (García‐Sánchez et al, 2012; Mussa, Ebro, & Nigatu, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Soil seed bank characteristics in relation to different shrub species in semiarid regions

2021

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Little information is available about the effects of different species of shrubs on the composition of the soil seed bank (SSB) in the semiarid regions. We determined the role of three dominant shrub species on SSB characteristics and evaluated their potential for their possible use in rangeland restoration projects. Fifteen sites, each containing three shrub species (Amygdalus scoparia, Daphne mezereum and Ebenus stellata) and a herbaceous patch (control) in close proximity, were sampled and their SSB density, species richness and diversity at 0–10 cm depth were determined. The results showed that the density of the SSB was highest under A. scoparia and lowest in the control. The highest SSB density of grasses was found under A. scoparia, while the highest SSB density of forbs was found under E. stellata. Species diversity of the SSB was significantly greater under E. stellata than under the other shrubs and control. This study revealed that the extent to which shrubs affected SSB characteristics did not only depend on the presence of shrubs, but also on the species of shrubs. These different roles of different species of shrubs on SSB are advised to be considered in the restoration of degraded areas through the SSB in the semiarid areas. In the case of changing management type from intensive grazing to extensive grazing or non‐grazing, the role of different shrub species in the conservation herbaceous species through their SSB can be different.

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mentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Soil seed bank characteristics in relation to different shrub species in semiarid regions

2021

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“…These techniques are expensive and do not ensure reintroduction success in the field. In such context, positive interactions between plant species could play a key role in reducing stress and favoring plant survival for successful reintroduction and restoration (Fedriani et al 2019;Funk et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Positive interaction between shrubs and native orchids in a Mediterranean ecosystem

et al. 2020

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In the Mediterranean portion of Central Chile, where anthropic disturbances are common and severe, precipitations could drastically decrease and temperatures increase due to climate change. In this ecological context, positive interactions between plants could increase in relevance since they can increase growth and survival in stressful conditions. In this area, natural populations also suffer herbivore damage, mainly by cattle and other introduced species. The orchid family is represented in Chile by terrestrial species only that grow in natural and disturbed sites where native shrubs are common. These species have been poorly studied in terms of their ecology, and some species are currently severely threatened. In this study, we tested if native shrubs can facilitate Chilean orchids, reducing abiotic stress and herbivory. We evaluated this positive interaction in three sites with different orchid and shrub species. We found that in all sites, there are more orchid individuals growing inside the canopy of shrubs compared to open areas. Additionally, abiotic conditions were milder and herbivory was reduced inside shrubs in all sites. Our results suggest that there is a positive interaction between native shrubs and native orchids that could result in increased survival in orchid individuals growing inside the canopy of such shrubs. This result could be essential for future conservation and restoration initiatives that should take into account the need for shrubs before re-introduction of individuals in the field, especially for endangered orchid species present in Central Chile.

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“…It has been frequently called shrubs as fertile islands, since, they have significant influences on habitat conditions. Shrubs have been shown to increase soil microbial functions (Chandregowda et al, 2018), enhance mycorrhizal colonization (Armenta Calderón et al, 2019), alter runoff and sediment yields (García Ruiz et al, 2013;Keesstra et al, 2016;Lu et al, 2019) and affect the soil seed bank (SSB) (Niknam et al, 2018;Funk et al, 2019). They increase SSB under their canopies by trapping seeds or increasing seed production by sub-canopy plants through ameliorating the environment (García-Sánchez et al, 2012;Mussa et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Soil seed bank characteristics in relation to different shrub species in semiarid regions

Erfanzadeh¹,

Hadinezhad²,

Ghelichnia³

2020

Preprint

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Little information is available about the effects of different species of shrubs on the composition of the soil seed bank (SSB) in semiarid regions. We determined the role of three dominant shrub species on SSB characteristics and evaluated their potential for their possible use in rangeland restoration projects. Fifteen sites, each containing three shrub species (Amygdalus scoparia, Daphne mezereum and Ebenus stellata) and a herbaceous patch (control) in close proximity, were sampled and their SSB density, species richness and diversity at 0-10 cm depth were determined. The results showed that the density of the SSB was highest under A. scoparia (1133 seeds per m2) and lowest in herbaceous vegetation (110 seeds per m2). Species richness and diversity of the SSB was significantly greater under E. stellata than under the other shrubs and control. This study revealed that the extent to which vegetation affected SSB characteristics did not only depend on the presence of shrubs, but also on the species of shrub. These different roles of different species of shrubs on SSB are advised to be considered in the restoration of degraded areas through planting of shrubs in semiarid regions. Planting and the extension of E. stellata cover in degraded sites could be of priority due to its prominent role in herbaceous SSB reservoir and species diversity and richness.

show abstract

Effect of Grazing and Drought on Seed Bank in Semiarid Patchy Rangelands of Northern Patagonia, Argentina

Cited by 13 publications

References 66 publications

Soil seed bank characteristics in relation to different shrub species in semiarid regions

Soil seed bank characteristics in relation to different shrub species in semiarid regions

Positive interaction between shrubs and native orchids in a Mediterranean ecosystem

Soil seed bank characteristics in relation to different shrub species in semiarid regions

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