Known only from two records (one of which was from a Botanic Garden), the full distribution, population size, trends and ecology of this species are essentially unknown. In effect it could fall in any category between Critically Endangered and Least Concern. Therefore, it is evaluated as Data Deficient.
Rubroporus carneoporis is the type species of the genus and was described by Loguercio-Leite et al. (2002).
Rubroporus carneoporis is a rare and conspicuous yellow wood-decaying fungus growing on angiosperm wood. The species occurs only in the Atlantic Forest domain of Brazil, with just two known occurrences in the state of Santa Catarina.
Rubroporus carneoporis is known from only 2 sites, both of them in the Atlantic Forest, in Santa Catarina, Brazil. The type locality is a very small tropical broadleaved forest fragment in the botanical department of Universidade Federal de Santa Catarina, located in the urban area of Florianópolis municipality. The other site is located in Itapiranga municipality, western region of Santa Catarina state, in the deciduous forest vegetation. Both phytogeographic regions belong to the Atlantic Forest domain. The sites are 520 kilometers apart from each other, and the species is likely rare, as there are few records, despite the well surveyed areas in its potential distribution in southern Brazil, and the species is likely restricted to the southern Atlantic Forest.
Currently, the species is known from only two sites in Santa Catarina, Brazil, in the tropical broadleaved and semideciduous forests of the Atlantic Forest, a very fragmented domain that has only 28% of its original area remaining (Rezende 2018), and forest declines are still ongoing and increasing. However, the exact habitat requirements are uncertain, and so we cannot accurately estimate the population trend.
It is suspected that the species is probably restricted to the southern Atlantic Forest, which is one of the most intensively studied parts of Brazil. It is likely extremely rare, as it was only found twice in about 100 years, and as it was not found in several other well surveyed sites throughout its potential area of occurrence, despite being very conspicuous. However, there is currently insufficient data to accurately estimate distribution and population size.
Population Trend: Uncertain
Rubroporus carneoporis is a wood-decay fungus found growing on dead angiosperm wood. The type specimen was found growing on Alchornea triplinervia, a common pioneer tree species in an urban setting, while no host identification was provided for the other record. Thus its actual habitat and ecology are uncertain. Despite being recorded in a very well surveyed area, the species has not found again in over 20 years since its description.
It may be found throughout the southern Atlantic Forest of Brazil, in the tropical broadleaved forest (Coastal Atlantic Forest), mixed needle-broadleaved forest (Araucaria Forest) and the Semideciduous Forest of the Uruguay river basin.
Rubroporus carneoporis is found in the Atlantic Forest of Brazil, regarded as a biodiversity Hotspot for conservation priorities due to its high diversity, endemism rates and habitat loss (Myers et al. 2000). This phytogeographical domain is estimated to have only 28% of its original cover remaining, being significantly fragmented and with many patches in process of regeneration (Rezende et al. 2018). According to Pinto et al. (2006), the Atlantic Forest is found in this situation due to exploitation of the resources and other human actions, like territorial occupation. About 60% of the Brazilian population lives in the Atlantic Forest, mainly in coastal areas, where the country’s largest cities are located (Rezende et al. 2018). Other threats to the Atlantic Forest include increase in fire frequency and intensity, introduction of invasive species and the connection between these factors (Brooks and Balmford 1996, Pinto et al. 2006, Tabarelli et al. 2006). Also, a reduction and ‘savannization’ of Atlantic Forest is expected due to climate change in the next decades (Salazar et al. 2007). However, because the specific habitat requirements of this species are not known, the impacts of these threats on the species are essentially unknown.
The main action to prevent the decline of the species is the protection of its habitat by the implementation of conservation units and enforcement of public policies to recover secondary forests.
More surveys are essential to rediscover the species and to better understand its distribution and ecology. The phylogenetic position of this species should also be evaluated.
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