A narrowly endemic species of Begoniaceae: rediscovery, distribution and conservation ofBegonia jocelinoi

Abstract

Begonia jocelinoi Brade (Begoniaceae) is a threatened species, endemic to a small locality in the Brazilian Atlantic Forest. The species was formerly listed as Wanted in the Red List of Endemic Flora of the state of Rio de Janeiro because it had not been recorded since 1953. After evaluating herbarium collections and conducting fieldwork during May 2019–February 2020, we report the rediscovery of a single population of 65 reproductive individuals of B. jocelinoi, along with numerous seedlings, besides a trail in Itatiaia National Park. This Park is an IUCN category II protected area that permits some tourism activities. Some individuals of B. jocelinoi showed signs of pruning following the maintenance of the trail. We recommend strategies for in situ and ex situ conservation of this narrowly endemic species, including provision of advice to tourists regarding the occurrence of threatened species, and diversion of the trail where the species occurs.

Endangered status and threatened population ecological factors in Salvia daiguii, an endemic species from Hunan, China

“…The Tianmenshan National Forest Park is located about 20 km from the Wulingyuan Scenic Area, one of the three natural heritage landscapes included in the World Heritage List of the United Nations Educational, Scientific, and Cultural Organization, and it was the first national forest park to be established in China (Yan, 2003 ). The development of forest tourism and human activities may also have contributed to landscape fragmentation, habitat loss, and abrupt population declines of S. daiguii (Clark‐Tapia et al., 2021 ; Paglia et al., 2022 ).…”

“…Information on the distribution of plants in the field, including location and range of distribution, habitat, population size, abundance, plant growth state, and soil nutrition, is significant in determining the threat level to plants and related conservation priorities (Cogoni et al., 2021; Dabré et al., 2023; Krebs, 2015; Robiansyah et al., 2021; Wang et al., 2016; Xu & Zang, 2022; Zhang et al., 2022). Moreover, the goal of biodiversity conservation is to conserve species and the habitats in which they occur (Essl et al., 2009); however, habitat loss may cause a significant threat including a decline in biodiversity, especially for an endangered species with a narrow geographical distribution (Paglia et al., 2022; Xu et al., 2021). Therefore, knowing the distribution and habitats of endangered plants can help researchers to better understand the endangered status of plants, so that they can conserve endangered species more effectively.…”

“…Moreover, the goal of biodiversity conservation is to conserve species and the habitats in which they occur (Essl et al, 2009); however, habitat loss may cause a significant threat including a decline in biodiversity, especially for an endangered species with a narrow geographical distribution (Paglia et al, 2022;Xu et al, 2021).…”

Lost but not forgotten: a new nomenclature to support a call to rediscover and conserve lost species

“…Some are naturally rare or cryptic and so are hard to document conclusively (e.g. de Lírio, 2018; Paglia et al, 2022), others have had their numbers reduced to such low levels that finding them is difficult (e.g. Lee et al, 2008; Richmond et al, 2022).…”

Rediscovery of the Critically Endangered Primula esquirolii, a karst cave species with an extremely small population endemic to China

“…Narrow endemic plant species require diversified conservation measures. For Parakmeria omeiensis , a Critically Endangered tree species in the family Magnoliaceae, an integrated conservation approach, including strengthening in situ conservation, cultivation of saplings, ex situ conservation and reintroduction, was adopted (Yu et al, 2020); for Begonia jocelinoi , a threatened species endemic to a small locality in the Brazilian Atlantic Forest, in situ and ex situ conservation including studies on phenology, pollination, seed dispersal and population dynamics were recommended (Paglia et al 2022).…”