Gigier Marcelo de Oliveira, Heiden Gustavo, Forzza Rafaela Campostrini
Jardim Botânico do Rio de Janeiro, Rio de Janeiro, Brazil Jardim Botânico do Rio de Janeiro Rio de Janeiro Brazil.
Embrapa Clima Temperado, Pelotas, Brazil Embrapa Clima Temperado Pelotas Brazil.
Biodivers Data J. 2025 May 21;13:e142891. doi: 10.3897/BDJ.13.e142891. eCollection 2025.
As an area of great diversity and suffering from many threats, the Brazilian and its floristic zones, such as , Rock Outcrops and Grasslands, call for attention and recurrent studies on plant diversity as a means of helping conservation efforts. In this context, acquiring, curating and using herbaria data is crucial to filling gaps in plant distribution and biogeography, as well as confirming or denying species incidence in the area of interest. This study provides a solid dataset with information regarding diversity and distribution of species from the tribe Gnaphalieae (Asteraceae) in the State of Rio de Janeiro, Brazil, with significant updates since the publication of Flora Fluminensis by Vellozo almost 200 years ago, the Rio de Janeiro checklist one decade ago and the milestone of the continuously updated dynamic dataset.
We recorded 31 species of Gnaphalieae (Cass.) Lecoq. & Juill. for Rio de Janeiro State of which nine are newly recorded in the area and five are refuted occurrences, compared to the listing in 2023. In our compilation, we confirmed the occurrence of eight genera in the State flora: (Less.) DC., Cass., DC., Cass., Wedd., L., Cass. and Kirp. Moreover, we compared the cost-benefit on using municipality centroids versus original/curated coordinates on 5 km quadrants. We found that, on this geographical scale, there is no significant difference between the two methods. We advocate for using the less time-consuming centroids, which are less prone to human error, for expediting presence/absence checklist data curation and if the main goals are to quantify records, map species richness and evaluate sampling effort. Nevertheless, precise coordinates are essential for ecological niche modelling, conservation assessments and other data usage, focusing on habitat level mapping.
巴西及其植物区系，如岩石露头和草原，是一个多样性极高且面临诸多威胁的地区，需要对植物多样性进行持续关注和研究，以助力保护工作。在此背景下，获取、整理和使用植物标本数据对于填补植物分布和生物地理学方面的空白，以及确认或否定感兴趣区域内物种的存在至关重要。本研究提供了一个可靠的数据集，包含巴西里约热内卢州鼠麴草族（菊科）物种的多样性和分布信息，自近200年前韦洛佐发表《里约热内卢植物志》、十年前的里约热内卢清单以及不断更新的动态数据集这一里程碑以来，有了重大更新。
我们记录了里约热内卢州的31种鼠麴草（Cass.）Lecoq. & Juill.，与2023年的清单相比，其中9种是该地区新记录的，5种被证明不存在。在我们的汇编中，我们确认了该州植物区系中有8个属：（Less.）DC.、Cass.、DC.、Cass.、Wedd.、L.、Cass.和Kirp。此外，我们比较了使用市中心点与5公里象限的原始/整理坐标的成本效益。我们发现，在这个地理尺度上，两种方法之间没有显著差异。我们主张使用耗时较少、不易出现人为错误的中心点，以加快存在/不存在清单数据的整理，如果主要目标是量化记录、绘制物种丰富度图和评估采样工作。然而，精确坐标对于生态位建模、保护评估和其他数据使用至关重要，重点是栖息地水平的绘图。
