Convolvulaceae do Parque Estadual do Juquery, Franco da Rocha, SP, Brasil

Silva, Denise Brentan; Simão-Bianchini, Rosângela; Souza-Buturi, Fátima Otavina de

doi:10.1590/2236-8906-72/2017

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…Creating a species list. We identified the specimens collected consulting specialized literature for the plants of the state of São Paulo (e.g., Wanderley et al 2001Wanderley et al , 2002Wanderley et al , 2005Wanderley et al , 2007Wanderley et al , 2016Martins et al 2009) and for specific families and groups (e.g., Caruzo and Cordeiro 2007;Borges and Forzza 2008;Nakajima 2008, 2011;Heiden et al 2009;Silva et al 2018). We consulted specialists in the local flora (see Acknowledgments) to identify or confirm species.…”

Section: Methodsmentioning

confidence: 99%

“…The few sites that harbor this flora are relicts of the original vegetation of this biome (Raimundo 2006), and these are necessary for the conservation of rare and threatened species (Baitello et al 2013;Beraldo et al 2018). Still, few studies have been carried out in these fragments in the MRSP (e.g., Baitello et al 2013;Beraldo et al 2018;Silva et al 2018). The lack of floristic surveys of the grasslands in the MRSP reveals a gap in knowledge on species diversity, especially for herbaceous plants, needed to understand the physiognomic and ecological characteristics and the conservation status of these areas.…”

Section: Introductionmentioning

confidence: 99%

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High richness, new occurrences, and threatened species in a savanna grassland remnant in the largest Brazilian metropolis

Keller¹,

Pereira-Silva²,

Hardt³

2021

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Parque Estadual do Juquery is the largest protected remnant of savanna grassland in the metropolitan region of São Paulo (MRSP). We conducted a floristic inventory and created a photographic record of the angiosperm flora of the savanna formations in this area and compared it with those of other Cerrado sites using Jaccard’s similarity index. We present a list with 366 species, distributed in 58 botanical families. Asteraceae and Poaceae were the families with the highest species richness. Eighty-six new occurrences were recorded in the park. According to the São Paulo state Red List, 14 species are threatened by extinction, of which four are presumably extinct. Most species are herbaceous (36.0%) and sub-shrub plants (26.5%). No floristic similarity was observed with other savanna formations in the countryside of the state of São Paulo. Our results emphasize the importance of the Parque Estadual do Juquery for the conservation of savanna grassland formations in the MRSP and the protection of locally endangered species.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High richness, new occurrences, and threatened species in a savanna grassland remnant in the largest Brazilian metropolis

Keller¹,

Pereira-Silva²,

Hardt³

2021

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Too hot for the weeds? Exploring the impact of climate change in herbaceous Convolvulaceae in Cerrado and Mata Atlântica biomes (SE Brazil)

Barbosa,

Alves,

Moreira

et al. 2024

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Aim: We investigated the potential resilience to climatic change of nine species of weeds in Convolvulaceae, using predictive spatial modeling across two contrasting biomes in Southeastern Brazil: Cerrado (=Savanna) and Mata Atlantica (=Atlantic Forest). We inferred future changes in distribution area, the climatic variables that will be most impactful, and the potential occurrence of future climatic refuges. Location: Southeastern Brazil (Sao Paulo, Brazil). Methods: A total of 195, taxonomically vetted, distribution records were compiled for nine species of Convolvulaceae. Potential distribution areas were modelled in RStudio 1.3.1056 with R 3.6.3 using modleR; environmental layers used were the 19 bioclimatic variables with 30 seconds resolution. After a correlation analysis, four bioclimatic variables were selected for distribution modelling: Temperature Seasonality (BIO4), Mean Temperature of Wettest Quarter (BIO8), Precipitation of Wettest Month (BIO13) and Precipitation of Driest Quarter (BIO17). The species distribution modelling was performed using the Maxent algorithm for the present time (1960-1990) and for future projections (2050 and 2070), under two different scenarios of projections, moderate and pessimistic. The final distribution models were generated through the selection of primary models with a minimum level of TSS (True Skills Statistics) equal to 0.7. Results: The analysed species demonstrated different levels of response to climatic change: Distimake aegyptius, D. dissectus, and Evolvulus pteurocaulon exhibited a gain in the climatic suitability range, regardless of the future scenarios. Other species, such as E. glomeratus, Ipomoea bonariensis, and I. alba showed a decline in climatic suitability range, more accentuated in the pessimistic scenario . Three species showed a positive response in a moderate future scenario, but a decline in the most extreme projection. Areas that may act, in the future, as climatic refuges for the displaced species are also highlighted, in view of being prioritised for conservation.

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Floristic survey of Rubiaceae in the largest remnant of Cerrado in the metropolitan region of São Paulo, Brazil

Rossatto,

Bruniera

2024

Rodriguésia

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We present a floristic survey of the family Rubiaceae in Juquery State Park, a conservation unit that harbors the largest Cerrado area in the metropolitan region of São Paulo and is a refuge within the Atlantic Forest domain. The work was conducted using conventional methods in plant taxonomy, including fieldwork between 2020 and 2023, a literature survey, visits to herbaria, and requests for specimen loans. Previous articles revealed the high diversity of the family in the park, but no specific treatment had been published. In the present study, 35 species distributed in 15 genera were recorded in different phytophysiognomies, and Borreria (7 spp.), Palicourea (5 spp.), Coccocypselum (4 spp.), Psychotria (4 spp.), and Galianthe (3 spp.) are the richest. Four genera (Cordiera, Hexasepalum, Malanea and Mitracarpus) and 21 species are new records for this conservation unit. A dichotomous identification key and photos of the species are also provided. The diversity of Rubiaceae species in the study area is greater than previously recorded in broader surveys, and the mosaic formed by open and forest phytophysiognomies in the park probably contributes to this high level of diversity.

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Convolvulaceae do Parque Estadual do Juquery, Franco da Rocha, SP, Brasil

Cited by 4 publications

References 22 publications

High richness, new occurrences, and threatened species in a savanna grassland remnant in the largest Brazilian metropolis

High richness, new occurrences, and threatened species in a savanna grassland remnant in the largest Brazilian metropolis

Too hot for the weeds? Exploring the impact of climate change in herbaceous Convolvulaceae in Cerrado and Mata Atlântica biomes (SE Brazil)

Floristic survey of Rubiaceae in the largest remnant of Cerrado in the metropolitan region of São Paulo, Brazil

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