The unpredictable fate of the single population of a threatened narrow endemic Mediterranean plant

Cogoni, Donatella; Sulis, Elena; Bacchetta, Gianluigi; Fenu, Giuseppe

doi:10.1007/s10531-019-01757-0

Cited by 19 publications

(24 citation statements)

References 70 publications

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“…All these results are encouraging for the survival of the species and, together with demographic information (e.g. Cogoni et al, 2019), can help us plan species-specific conservation measures. In future studies plant-animal interactions should be studied both in the natural and translocated plants to analyse how pollinators, herbivory and parasitism influence the reproductive success of D. morisianus, and the survival capacity of the species.…”

Section: Discussionmentioning

confidence: 73%

“…Populations of narrow endemic plants, which are often small and fragmented (e.g. Larrinaga et al, 2014), are often subject to a higher extinction risk (Cowling et al, 1996;Orsenigo et al, 2018;Cogoni et al, 2019) due to habitat degradation (e.g. Baillie et al, 2004), inbreeding depression (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…is a psammophilous threatened narrow endemic plant that grows only in one natural population on established sand dunes in Portixeddu (South-western Sardinia; Bacchetta et al, 2010). This species is considered as one of the most threatened on the island (Bacchetta et al, 2012) and it has been categorised as Critically Endangered on the IUCN Global Red List due to the strong degradation of its natural habitat (Fenu et al, 2017;Cogoni et al, 2019), the small population size (Fenu et al, 2013) and the limited seedling recruitment rate (Cogoni et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Breeding system and inbreeding depression in a translocated population of the endangered plant Dianthus morisianus (Caryophyllaceae)

Nebot

Cogoni

Fenu

et al. 2020

Flora

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Know the breeding system of endemic plants is important to design conservation strategies. Translocations are actions to improve the survival prospects of the species, but nowadays there are only a few studies that analyse their success and make a comparison between translocation and the natural populations. Dianthus morisianus is a threatened narrow endemic plant species growing on sand dunes in SW Sardinia (Italy). The objective of this study was to assess the breeding system, the presence of inbreeding depression and pollen limitation, as well as the success of the plant translocation. All these results were compared with those from the single natural population. The breeding system was tested through five pollination treatments and the reproductive success was analysed by the fruit set, seed set, seed weight, germination and mortality rate. The translocated population behaved like the natural one on fruit and seed formation. Autonomous self-pollination was lower than the other treatments regarding fruit set and seed/ovule ratio in the two studied populations. The species is self-compatible and presents partial self-fertility. The selfing rate was higher in the translocated population and the inbreeding depression presented low values for the natural population, while the translocated population presented negative values. Neither of the populations suffered pollen limitation. The species did not present reproductive problems and it is pollinator dependent. Moreover, the translocated population demonstrated high success after five years, as an increase of the population area and new recruited plants was observed; the offspring were able to flower, fruiting and reproduce. This translocation success increases the survival prospects of the species.

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Section: Discussionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Breeding system and inbreeding depression in a translocated population of the endangered plant Dianthus morisianus (Caryophyllaceae)

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Cogoni

Fenu

et al. 2020

Flora

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“…Considering that a large number of medicinal and aromatic plants utilized all over the world are threatened [251] and two thirds of them are directly collected in the wild, it is necessary to promote and plan a rational exploitation of the plant biodiversity as a source of new bioactive substances. This observation is even more true for the endemic species, since they are particularly sensitive due to their restricted distribution and the small and often fragmented population size [15][16][17][252][253][254]. Thus, additional routes for resupply plant material need to be considered and, among the feasible strategies, the ex situ cultivation of threatened medicinal plants represents an encouraging protective approach in order to reconcile the conservation needs with research in the pharmaceutical field [19,255].…”

Section: Criticism and Future Perspectivesmentioning

confidence: 99%

So Uncommon and so Singular, but Underexplored: An Updated Overview on Ethnobotanical Uses, Biological Properties and Phytoconstituents of Sardinian Endemic Plants

Sanna

Maxia

Fenu

et al. 2020

Plants

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The last decades have recorded an increase of plant-based drug discovery processes. Indeed, natural products possess a superior chemical diversity as compared to synthetic ones, leading to a renewal in searching for new therapeutic agents from the plant kingdom. In particular, since the structural variety of natural compounds reflects the biodiversity of their source organisms, regions of the world with high biodiversity and endemism deserve particular interest. In this context, Sardinia Island (Italy), with 290 endemic taxa (12% of the total flora), is expected to provide unique and structurally diverse phytochemicals for drug development. Several research groups built up a large program dedicated to the analysis of Sardinian endemic species, highlighting their peculiar features, both in respect of phytochemical and biological profiles. On this basis, the aim of this review is to provide an up-to-date and comprehensive overview on ethnobotanical uses, biological properties and phytoconstituents of Sardinian endemic plants in order to support their beneficial potential and to provide input for future investigations. We documented 152 articles published from 1965 to June 2020 in which a broad range of biological activities and the identification of previously undescribed compounds have been reported, supporting their great value as sources of therapeutic agents.

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“…Godefroid et al 2011;Menges et al 2016) since demographic studies are a powerful tool for detecting and diagnosing the decline of plants populations (Menges 1990). A recovery plan for a threatened plant is impossible without a good knowledge of population demography (Schemske et al 1994;Menges and Dolan 1998;Bell et al 2003;Cogoni et al 2019). Therefore, demographic analysis, combined with extensive ecological and genetic studies, constitute an essential conservation tool allowing to identify the long-term population trends, the contribution of particular life history stages to the population growth rate, and causes and consequences of differences in life stages among populations and years (Caswell 2001;Morris and Doak 2002;Dibner et al 2019;Cogoni et al 2019).…”

Section: Introductionmentioning

confidence: 99%

From global to local scale: where is the best for conservation purpose?

et al. 2020

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Demographic analysis of plant populations represents an essential conservation tool allowing to identify the population trends both at global and at the local level. In this study, the population dynamics of Helianthemum caput-felis (Cistaceae) was investigated at the local level by monitoring six populations distributed in Sardinia, Balearic Islands and Ibero-Levantine coast (Alicante). Demographic data for each population were analysed by performing Integral Projection Models (IPMs). Our results showed that, although the local trend of the main basic demographic functions was similar, vital rates and demographic dynamics varied among populations indicating high variability. In fact, asymptotic growth rate in Spanish populations widely varied both between years and populations (some populations growth, decline or strongly decline), while Sardinian populations showed greater equilibrium or a slight increase. Also, the typical pattern of a long-lived species was not supported by the results at the local scale. These results indicated that different populations of the same species can present extremely different population dynamics and support the belief that, for conservation needs, local studies are more informative than global ones: the conservation status of H. caput-felis could notably vary at a small spatial scale and, accordingly, the conservation efforts must be planned at the population level and supported by local analysis.

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The unpredictable fate of the single population of a threatened narrow endemic Mediterranean plant

Cited by 19 publications

References 70 publications

Breeding system and inbreeding depression in a translocated population of the endangered plant Dianthus morisianus (Caryophyllaceae)

Breeding system and inbreeding depression in a translocated population of the endangered plant Dianthus morisianus (Caryophyllaceae)

So Uncommon and so Singular, but Underexplored: An Updated Overview on Ethnobotanical Uses, Biological Properties and Phytoconstituents of Sardinian Endemic Plants

From global to local scale: where is the best for conservation purpose?

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