Species composition, diversity and coverage pattern of associated communities of mosses-lichens along a pedoenvironmental gradient in Maritime Antarctica

Schmitz, Daniela; Michel, Roberto; Putzke, Jair; Pereira, Antônio Batista; Schaefer, Carlos Ernesto Gonçalves Reynaud

doi:10.1590/0001-3765202120200094

Cited by 3 publications

(3 citation statements)

References 37 publications

(44 reference statements)

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“…Despite not having evaluated the specific cryptogam communities along a succession dynamic, it is assumed that the reproductive behavior variations of southern giant petrel may induce differences on chemical and physical properties of substrates; consequently, it may generate an abiotic filtering and promotes high β-diversity and low species similarity between active and inactive nests. Previous studies showed that pedoenvironmental and soil fertility have significant effects on species composition and beta diversity of cryptogam communities in Antarctica (Schmitz et al 2020a(Schmitz et al , 2020b(Schmitz et al , 2021. Based on gradient analysis, the pedoenvironmental filtering of cryptogam communities has been previously tested on Maritime Antarctica (Schmitz et al 2020a(Schmitz et al , b, 2021.…”

Section: Discussionmentioning

confidence: 99%

“…Surprisingly, the fruticose lichen Sphaerophorus globosus can survive in the first ring of plants surrounding southern giant petrel nests. Petrels can weigh up to 5.4 kg (Warham 1962) The results of beta diversity allow presuming that a deterministic pattern shape by habitat filtering (i.e., Schmitz et al 2020aSchmitz et al , 2021 is possible, which must be proven through the covariation of nest categories (active and inactive) and nest distribution along environmental gradients. Moreover, the positive relationship of coverage and nests area, and the negative relationship of beta diversity and nests area, may indicate that recently active nests promote higher species richness, community composition variability and beta diversity due to the high resources availability (i.e., nutrients, space) for coexistence during initial successional stages.…”

Section: Discussionmentioning

confidence: 99%

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The diversity and structure of plant communities in the maritime Antarctic is shaped by southern giant petrel’s (Macronectes giganteus) breeding activities

Putzke

Schaefer

Villa

et al. 2022

An. Acad. Bras. Ciênc.

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Southern giant petrels (Macronectes giganteus) are found in the Antarctic.They build their nests with rock fragments, disturbing large areas during incubation and chick feeding periods; however, their impact on vegetation is unknown. Thus, we aimed to evaluate the effect of Petrel nests and associated breeding activities on the diversity and structure of cryptogam communities of Stinker Point, Elephant Island. We selected 13 nests in February and March 2012 and continue the monitoring in 2018. The area of direct influence of breeding activities was photographed to calculate plant community coverage. The results demonstrated that species richness, community coverage and composition, and beta diversity showed significant differences between active and inactive nests. The linear mixed-effect models revealed that the positive effect of nest area mainly caused variation in community coverage, but had a negative effect on beta diversity. Sphaerophorus globosus (lichen) grew around the inactive nests, sometimes forming a ring up to 1 m in diameter. This ring was then surrounded by the Chorisodontium acyphyllum moss colonized by S. globosus, and a final ring of Sanionia uncinata, colonized by the same lichen. Recently constructed nests are generally surrounded by Prasiola crispa and Sanionia uncinata carpets.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The diversity and structure of plant communities in the maritime Antarctic is shaped by southern giant petrel’s (Macronectes giganteus) breeding activities

Putzke

Schaefer

Villa

et al. 2022

An. Acad. Bras. Ciênc.

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“…Lichens are considered key elements of the Antarctic flora. Their distribution ranges from coastal regions of maritime Antarctica (Schmitz et al, 2021) to climatically harsh areas of continental Antarctica (Wagner et al, 2021). They occupy various environments and substrates and exhibit region-and site-dependent biodiversity determined mainly by macro-and microclimatic characteristics.…”

Section: Introductionmentioning

confidence: 99%

Three new records of lichenised fungi for Antarctica

et al. 2022

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As part of a project aiming to determine the lichenised fungal biodiversity of James Ross Island (Eastern coast of Antarctic Peninsula), we identified three infrageneric taxa which were previously not reported from Antarctica: Farnoldia micropsis (A. Massal.) Hertel, Gyalolechia epiphyta (Lynge) Vondrák and Placidium squamulosum var. argentinum (Räsänen) Breuss. Detailed morphological and anatomical properties of these species along with photographs based on the Antarctic specimens are provided here. In addition, the nrITS, mtSSU and/or RPB1 gene regions of the selected specimens are studied and the phylogenetic positions of the species are discussed. The DNA sequence data for Farnoldia micropsis are provided for the first time. Farnoldia micropsis and Gyalolechia epiphyta are also new to the Southern Hemisphere.

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Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica

SACRAMENTO,

SCHAEFER,

SIQUEIRA

et al. 2023

An. Acad. Bras. Ciênc.

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Species composition, diversity and coverage pattern of associated communities of mosses-lichens along a pedoenvironmental gradient in Maritime Antarctica

Cited by 3 publications

References 37 publications

The diversity and structure of plant communities in the maritime Antarctic is shaped by southern giant petrel’s (Macronectes giganteus) breeding activities

The diversity and structure of plant communities in the maritime Antarctic is shaped by southern giant petrel’s (Macronectes giganteus) breeding activities

Three new records of lichenised fungi for Antarctica

Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica

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