Summit vascular flora of Serra de São José, Minas Gerais, Brazil

The campos rupestres form a mosaic of rocky savannas concentrated mainly along the Espinhaço chain, on the Brazilian shield. Though the Serra de São José lies over 100 km to the south of the Espinhaço chain, the campo rupestre flora of this small range harbors several endemic plant taxa. The provided checklist is the result of two decades of floristic research complemented with data from herbaria and literature. The flora is compared with the results of several other pertinent surveys. A total of 1,144 vascular plant species, representing 50.3 species/km2, were documented to date in the São José range, representing a species-richness per unit area over five times greater than other known campo rupestre floras. The most species-rich families were the Asteraceae (126 species), Orchidaceae (106), Melastomataceae (63), Leguminosae (60), Cyperaceae (45), Poaceae (41), Rubiaceae (37), Myrtaceae (28), Bromeliaceae (27), Eriocaulaceae (23), Lamiaceae (23), and Malpighiaceae (22).

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Species Richness of Sclerophyll (Heathy) Plant Communities in Australia ̵2 the Influence of Overstorey Cover

Australian Journal of Botany ◽

10.1071/bt9890337 ◽

1989 ◽

Vol 37 (4) ◽

pp. 337 ◽

Cited By ~ 42

Author(s):

RL Specht ◽

A Specht

Keyword(s):

Species Richness ◽

Plant Species ◽

Plant Communities ◽

Unit Area ◽

Vascular Plant ◽

Biotic Factor ◽

Rate Of Development ◽

South West ◽

Open Forest ◽

Simultaneous Decrease

The species richness (number of vascular-plant species per unit area) of sclerophyll (heathy) plant communities is examined from south-east Queensland to south-west Western Australia. The species richness of communities of heathy open forest, heathy open scrub, dry heathland and wet heathland is consist- ently similar throughout southern Australia and decreases from dry heathland (on laterite, coastal and inland localities) to heathy open forest, heathy open scrub and wet heathland. Investigation of related microcommunities at Cooloola, Stradbroke Island, Ku-ring-gai Chase and Wilsons Promontory indicates that species richness decreases linearly as overstorey cover increases. In post-fire succession on Stradbroke Island heathy woodland and Dark Island heathland, species richness declines linearly as overstorey cover increases during the regeneration of the community. The appli- cation of limiting fertiliser to Stradbroke Island heathy woodland and Dark Island heathland increases the rate of development of overstorey cover, with a simultaneous decrease in species richness. Species richness of the understorey strata of plant communities appears to be inversely related to the rate of development of foliage projective cover in the overstorey. If an environmental or biotic factor inhibits or retards the development of overstorey cover, the understorey increases in species richness. Conversely, if any environmental or biotic factor accelerates the development of overstorey cover, the understorey species show a reduction in species richness.

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Predicting changes in Fennoscandian vascular-plant species richness as a result of future climatic change

Journal of Biogeography ◽

10.1046/j.1365-2699.1998.251192.x ◽

1998 ◽

Vol 25 (1) ◽

pp. 111-112 ◽

Cited By ~ 53

Author(s):

Magne Saetersdal ◽

H. J. B Birks ◽

Sylvia Peglar

Keyword(s):

Species Richness ◽

Climatic Change ◽

Plant Species ◽

Vascular Plant ◽

Plant Species Richness ◽

Vascular Plant Species ◽

Future Climatic Change

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Intensified grazing affects endemic plant and gastropod diversity in alpine grasslands of the Southern Carpathian mountains (Romania)

Biologia ◽

10.2478/s11756-007-0086-4 ◽

2007 ◽

Vol 62 (4) ◽

Cited By ~ 17

Author(s):

Bruno Baur ◽

Cristina Cremene ◽

Gheorghe Groza ◽

Anatoli Schileyko ◽

Anette Baur ◽

...

Keyword(s):

Species Richness ◽

Vascular Plant ◽

Calcareous Soils ◽

Acid Soils ◽

Endemic Plant ◽

Alpine Grasslands ◽

Gastropod Species ◽

Mountain Area ◽

The Carpathians ◽

Steep Slopes

AbstractAlpine grasslands in the Southern Carpathian Mts, Romania, harbour an extraordinarily high diversity of plants and invertebrates, including Carpathic endemics. In the past decades, intensive sheep grazing has caused a dramatic decrease in biodiversity and even led to eroded soils at many places in the Carpathians. Because of limited food resources, sheep are increasingly forced to graze on steep slopes, which were formerly not grazed by livestock and are considered as local biodiversity hotspots. We examined species richness, abundance and number of endemic vascular plants and terrestrial gastropods on steep slopes that were either grazed by sheep or ungrazed by livestock in two areas of the Southern Carpathians. On calcareous soils in the Bucegi Mts, a total of 177 vascular plant and 19 gastropod species were recorded. Twelve plant species (6.8%) and three gastropod species (15.8%) were endemic to the Carpathians. Grazed sites had lower plant and gastropod species richness than ungrazed sites. Furthermore, grazed sites harboured fewer gastropod species endemic to the Carpathians than ungrazed sites. On acid soils in the Fagaras Mts, a total of 96 vascular plant and nine gastropod species were found. In this mountain area, however, grazed and ungrazed sites did not differ in species richness, abundance and number of endemic plant and gastropod species. Our findings confirm the high biodiversity of grasslands on steep slopes in the Southern Carpathian Mts and caution against increasing grazing pressure in these refuges for relic plants and gastropods as well as for other invertebrates.

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O gênero Chamaecrista (Leguminosae: Caesalpinioideae) no Parque Estadual do Rio Preto, São Gonçalo do Rio Preto, Minas Gerais, Brasil

Rodriguésia ◽

10.1590/2175-7860201970030 ◽

2019 ◽

Vol 70 ◽

Author(s):

Laís Couto Zeferino ◽

Rubens Teixeira de Queiroz ◽

Juliana Gastaldello Rando ◽

Matheus Martins T. Cota ◽

Isabella Fernandes Fantini ◽

...

Keyword(s):

Minas Gerais ◽

Campo Rupestre ◽

Campos Rupestres ◽

Cadeia Do Espinhaço

Resumo O gênero Chamaecrista possui distribuição pantropical e está bem representado na flora brasileira, principalmente em campos rupestres e matas ciliares. No Brasil são encontradas 256 espécies, sendo que 149 delas aparecem somente em Minas Gerais, o que corresponde mais da metade da diversidade do gênero no país. A área selecionada para o estudo, o Parque Estadual do Rio Preto (PERP), pertence à Cadeia do Espinhaço. A vegetação é composta principalmente por fitofisionomias de Cerrado e Campo rupestre existindo também áreas de matas ciliares e de galerias. O estudo em questão teve como objetivo realizar o levantamento florístico e um estudo taxonômico de Chamaecrista no PERP, abrangendo chave de identificação das espécies e descrições taxonômicas das mesmas. As coletas foram realizadas dentro de um período de dois anos, por meio de caminhadas assistemáticas. O material coletado foi identificado e depositado na coleção do Herbário OUPR. Foram coletados e descritos 19 táxons que compreendem às seções Absus, Chamaecrista e Xerocalyx.

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