Bryophytes on rocky outcrops in the caatinga biome: a conservationist perspective

Silva, Joan Bruno; Germano, Shirley Rangel

doi:10.1590/s0102-33062013000400023

Cited by 23 publications

(21 citation statements)

References 36 publications

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“…The composition being dominated by Acrocarpic mosses dominate the bryophyte flora on rocky outcrops (Silva and Germano 2013, Silva et al 2014a, 2014b, where roughly 74% of the species are acrocarpic. The most species-rich families in the studies by Silva and Germano (2013) and Silva et al (2014aSilva et al ( , 2014b were Leucobryaceae, Bryaceae, and Pottiaceae; in our study, these families were also highly species rich, which reflects the great availability in the study area of exposed habitats, where these families are typically found. These families are adapted for sunny substrates (Richards 1984).…”

Section: Discussionmentioning

confidence: 99%

Acrocarpic mosses (Bryophyta) of Chapada das Mesas National Park, Maranhão, Brazil

Oliveira¹,

Oliveira²,

Peralta³

et al. 2018

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Chapada das Mesas National Park is located in southwestern Maranhão state, Brazil and comprises several forest types characteristic of the Brazilian Cerrado. We contribute to the knowledge of the distribution of Brazilian bryoflora and provide a list of moss species of Chapada das Mesas National Park. A total of 38 species of acrocarpic mosses were found, with Fissidentaceae being the richest family with 11 species. Of the species recorded, 22 are new occurrences for the state of Maranhão, and 4 of these are new records for the Northeast Region of Brazil. Most of the species recorded are broadly distributed in Brazil (66%), while restricted species represented just 10%. The most common acrocarpic moss species were Hyophila involuta (Hook.) A. Jaeger and Octoblepharum albidum Hedw.

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Section: Discussionmentioning

confidence: 99%

Acrocarpic mosses (Bryophyta) of Chapada das Mesas National Park, Maranhão, Brazil

Oliveira¹,

Oliveira²,

Peralta³

et al. 2018

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“…According to Spence and Ramsay (2006), members of this family colonize the most diverse habitats, from hot and disturbed environments to those that are extremely humid. Representatives of this family seem to have a great ability to colonize rock surfaces, which makes them important pioneer species (Silva and Germano 2013).…”

Section: Discussionmentioning

confidence: 99%

Bryophytes of Serra da Capivara National Park, Piauí, Brazil

Nascimento¹,

Conceição²,

Peralta³

et al. 2019

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Most studies of bryophytes in Brazil have focused on the Atlantic and Amazon forests, leaving the Caatinga as the biome least bryologically studied in the country. A bryofloristic survey of Serra da Capivara National Park was undertaken to analyze species richness, the distribution of species among Brazilian biomes, and the geographic distribution of species. A total of 450 samples of 62 species were collected, representing 48 mosses, 13 hepatics, and one hornwort. The resulting species list includes 22 new records for the Caatinga, 34 new records for the state of Piauí, and two for the Northeast Region of Brazil. About 60% (37 spp.) of the species have broad distributions in Brazil while 13 have moderate distributions and 12 are considered restricted. The results reinforce the importance of floristic inventories in Brazil and the maintenance of Parque Nacional da Serra da Capivara as an area for the conservation of bryophytes.

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“…Bryophytes have greater species richness in wet tropical forest than in dry tropical forests (see Delgadillo & Cárdenas 1990;Pôrto et al 1994;Pôrto & Bezerra 1996;Glime 2007;Silva & Germano 2013;Silva et al 2014). Despite soil islands being one of the richest microhabitats of rocky outcrops of xeric environments (Silva et al 2014), the richness of bryophytes is naturally low in these habitats (Silva & Germano 2013;Silva et al 2014), probably because of the low tolerance of bryophytes to water deficit.…”

Section: Discussionmentioning

confidence: 99%

“…Despite soil islands being one of the richest microhabitats of rocky outcrops of xeric environments (Silva et al 2014), the richness of bryophytes is naturally low in these habitats (Silva & Germano 2013;Silva et al 2014), probably because of the low tolerance of bryophytes to water deficit. This low level of species richness could decrease the predictive power of SAR (Patiño et al 2014), but this was not corroborated by other studies (e.g.…”

Section: Discussionmentioning

confidence: 99%

Bryophyte richness of soil islands on rocky outcrops is not driven by island size or habitat heterogeneity

et al. 2018

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Th e species-area relationship (SAR) is one of the oldest and most studied ecological models, having even served as the foundation of the Th eory of Island Biogeography. Nevertheless, the relative importance of habitat heterogeneity to SAR remains poorly understood. Our aim was to test the relative importance of habitat heterogeneity to the SAR of bryophyte assemblages of soil islands of rocky outcrops in the semi-arid region of Brazil. We randomly selected 15 to 20 soil islands on each of four outcrops for a total of 59 soil islands, and calculated the area, mean depth, and number of substrates for each. We used Generalized Linear Models (GLM) to test the SAR with two models, one using species richness and another using life-form richness as the dependent variables. We found no positive relationship between area and habitat heterogeneity, nor any evidence of a SAR, such as a positive relationship between area and species or life-form richness neither between habitat heterogeneity and species richness. However, our fi ndings did show that life-form richness is related to bryophyte species richness on the soil islands. We conclude by suggesting that not only can microclimate infl uence bryophyte richness, but opportunistic colonization by bryophytes is also important.

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Bryophytes on rocky outcrops in the caatinga biome: a conservationist perspective

Cited by 23 publications

References 36 publications

Acrocarpic mosses (Bryophyta) of Chapada das Mesas National Park, Maranhão, Brazil

Acrocarpic mosses (Bryophyta) of Chapada das Mesas National Park, Maranhão, Brazil

Bryophytes of Serra da Capivara National Park, Piauí, Brazil

Bryophyte richness of soil islands on rocky outcrops is not driven by island size or habitat heterogeneity

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Bryophytes on rocky outcrops in the caatinga biome: a conservationist perspective

Cited by 23 publications

References 36 publications

Acrocarpic mosses (Bryophyta) of Chapada das Mesas National Park, Maranh&atilde;o, Brazil

Acrocarpic mosses (Bryophyta) of Chapada das Mesas National Park, Maranh&atilde;o, Brazil

Bryophytes of Serra da Capivara National Park, Piau&iacute;, Brazil

Bryophyte richness of soil islands on rocky outcrops is not driven by island size or habitat heterogeneity

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Acrocarpic mosses (Bryophyta) of Chapada das Mesas National Park, Maranhão, Brazil

Acrocarpic mosses (Bryophyta) of Chapada das Mesas National Park, Maranhão, Brazil

Bryophytes of Serra da Capivara National Park, Piauí, Brazil