A New Distinctive Species of<i>Schizanthus</i>(Solanaceae) and the Reinstatement of<i>Schizanthus fallax</i>

Lavandero, Nicolás; Chinga, Javiera; Pinto, Raquel; Pérez, Manuel Antonio Silva

doi:10.1600/036364421x16231782047541

Cited by 2 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Specific status based on recent studies and reports published after April 2019 (not included in Palchetti et al, 2020 ) has been considered. This included studies, such as the revision of the genus Schizanthus ( Morales-Fierro et al, 2020 ; Lavandero et al, 2021 ); updates in Nolana ( Hepp and Dillon, 2018 ); the Morelloid clade of Solanum in Argentina ( Knapp et al, 2020 ); cryptic species recently reported ( Moreira-Muñoz and Muñoz-Schick, 2020 ); and new Petunia and Nicotiana species ( Greppi et al, 2019 ; Santilli et al, 2021 ). After a first cleaning, data from ex situ living collections that introduced species, hybrid taxa, and records with doubtful or incomplete identification at the species level were excluded.…”

Section: Methodsmentioning

confidence: 99%

Diversity and Conservation Gap Analysis of the Solanaceae of Southern South America

et al. 2022

View full text Add to dashboard Cite

There is a need to make substantial advances in the taxonomic, systematic, and distribution knowledge of plants, and find better ways of transmission of this information to society to surpass the general pattern described as “plant blindness.” The diversity of the plant family Solanaceae reaches its peak in South America; however, many of its species are threatened due to the expansion of the human footprint. Here, we examine the diversity patterns of the family in southern South America (Argentina and Chile) by means of species richness (SR), weighted endemism (WE), and corrected weighted endemism (CWE). We also evaluated conservation gaps in relation to protected areas and the human footprint as a proxy for potential impacts on this biodiversity. Results show two richness centers in NW and NE Argentina, with a high degree of overlap with protected areas, which, on the other side, show a relative high index of human footprint. Comparatively, coastal Atacama (Chile) shows lower richness values, but outstanding CWE and WE values. The coast of Atacama harbors high values due the presence of species of the genus Nolana with restricted distributions. Protected areas in this tight coastal strip are sparse, and the human footprint is also relatively high. The degree of protection based on these parameters is then unbalanced, highlighting the need for a geographically explicit strategy for the conservation of the family at subcontinental scale. In doing so, it is likely that other representatives of these unique centers of richness and endemism will benefit.

show abstract

Section: Methodsmentioning

confidence: 99%

Diversity and Conservation Gap Analysis of the Solanaceae of Southern South America

et al. 2022

View full text Add to dashboard Cite

show abstract

Effects of trade and poaching pressure on extinction risk for cacti in the Atacama Desert

Villalobo‐Lopez,

Peña,

Varas‐Myrik

et al. 2024

Conservation Biology

View full text Add to dashboard Cite

In this era of a global biodiversity crisis, vascular plants are facing unprecedented extinction rates. We conducted an assessment of the extinction risk of 32 species and 7 subspecies of Copiapoa, a genus endemic to Chile's fog‐dependent coastal Atacama Desert. We applied the International Union for Conservation of Nature Red List Categories and Criteria enhanced by expert insights and knowledge. Our primary aim was to analyze the impact of trade and poaching on their extinction risk. We employed machine learning models, including multinomial logistic regression (MLR), decision tree (DT), and random forest (RF), to analyze the relationships between conservation status and various factors. These factors encompassed trade and poaching activities, landscape condition, human footprint, monthly cloud frequency, and biological traits such as evolutionary distinctiveness and maximum diameter. Seven taxa had an area of occupancy (AOO) of <10 km2, 10 additional taxa had an AOO of <20 km2, and 16 taxa had an AOO of ≤100 km2. This reassessment exposed a critical level of extinction risk for the genus; 92% of the taxa were classified as threatened, 41% as critically endangered, 41% as endangered, and 10% as vulnerable. MLR, DT, and RF exhibited accuracies of 0.784, 0.730, and 0.598, respectively, and identified trade and poaching pressure and landscape condition as the primary drivers of extinction risk. Our assessment of Copiapoa showed trade, poaching, habitat degradation, and their synergic impacts as the main drivers of the genus’ extinction risk. Our results highlight the urgent need for nations to develop and enforce strategies to monitor and control trade and poaching pressure because these factors are crucial for the long‐term persistence of desert plants.

show abstract

A New Distinctive Species ofSchizanthus(Solanaceae) and the Reinstatement ofSchizanthus fallax

Cited by 2 publications

References 37 publications

Diversity and Conservation Gap Analysis of the Solanaceae of Southern South America

Diversity and Conservation Gap Analysis of the Solanaceae of Southern South America

Effects of trade and poaching pressure on extinction risk for cacti in the Atacama Desert

Contact Info

Product

Resources

About