Biotic Interactions (GloBI) · NCBI – National Center for Biotechnology Information. Alsophila firma. Open Interactive Map. Alsophila firma image. Click to Display. Brief summary. No one has contributed a brief summary to this page yet. Explore what EOL knows about Alsophila firma. Add a brief summary to this page. Alsophila firma (Baker) D.S. Conant is an accepted name. This name is the accepted name of a species in the genus Alsophila (family Cyatheaceae). The record.

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Influences of life-history attributes on formation of local and distant fern populations. The location of individual stems was carefully mapped using the distance m and compass bearings between individuals, thus obtaining the relative spatial coordinates of each individual.

For example, an increasing density of ramets would tend to expand the spore shadow of an individual genet, thus augmenting the probabilities of outcrossing and reducing the fitma effects of inbreeding. A new statistical method for haplotype reconstruction from population data.

However, with evermore phylogenetic analyses and data botanists are beginning to piece together that main groups or genera within the family. Therefore, the virma spatial aggregation observed in the two populations of A. Hymenophyllopsis look superficially similar to filmy ferns Hymenophyllaceae because of the similar characteristics of the lamina. Finally, we alsophilw for the effects of reduced sample size by conducting the same analyses on a reduced dataset containing only those individual stems that were successfully genotyped 74 in AH and 99 aldophila ATL.

Genetic structure and phylogeography of a relict tree fern, Sphaeropteris brunoniana Cyatheaceae from China and Laos inferred from cpDNA sequence variations: All analyses were performed using Loiselle et al.

The proportion of clones occurring more than twice was greater in ATL than in AH, where the bigger clones comprised six and nine individual stems, respectively Supporting Information Fig.


Spatial genetic structure within a metallicolous population of Arabidopsis halleria clonal, self-incompatible and heavy-metal-tolerant species. Statistics of estimated spatial genetic structure for plastid haplotypes plastid SSRs and nuclear alleles gapCp in the two studied populations of the tree fern Alsophila firma AH: The extant scaly tree ferns are commonly found in the tropics, from the wet lowlands to mid elevations.

Autogamous allohomoploidy in Alsophila and Nephelea Cyatheaceae: The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. Image attributed to Intermountain Herbarium via intermountainbiota. Marked spatial genetic structure in three populations of a weedy fern, Pteris multifida Poir.

It furthers the University’s objective of excellence in research, scholarship, and education by publishing worldwide. However, the presence of identical ramets in distinct spatial clusters might be the result of sexual reproduction. Close mobile search navigation Article navigation. A radioisotope technique to measure spore dispersal of the tree fern Cyathea arbores Sm.

Frequency distribution of a the number of ramets assigned to distinct genets and b the inter-ramet distances in two populations of the tree fern Alsophila firma AH: Other factors, such as life form and breeding system, are probably linked to SGS in ferns.

Alternatively, frequent clonal growth would result in a significant spatial clustering of individuals and populations should thus exhibit increased levels of inbreeding, low levels of genetic diversity and higher SGS. The diminutive Hymenophyllopsis superba. In plants with wind dispersion and random mating, the values of observed heterozygosity H O should approach those of gene diversity H S. Genetic diversity estimates for plastid haplotypes plastid SSRs and nuclear alleles gapCp and statistics of clonal extent in the two studied populations of the tree fern Alsophila firma AH: Spatial distribution of individual stems within the two studied populations of the tree fern Alsophila firma AH: Tree ferns exhibit a range of morphological variations and sizes: Single nucleotide polymorphisms were identified by direct chromatogram inspection with Consed Gordon et al.

Five independent runs were performed to check for consistency of results. To our knowledge, molecular markers for tree ferns are only available for plastid DNA sequences e. Primer names and fitma used to analyse the spatial genetic structure in two populations of the tree fern Alsophila firma AH: To understand the processes governing SGS in ferns better, it is also necessary to conduct more extensive comparative studies that consider differences in life-history traits among species.


Cyatheaceae: The Scaly Tree Ferns

The analyses performed on all sampled individuals indicated a more pronounced SGS when repeated genomic combinations were considered, considerably increasing the mean Sp statistic in both plastid SSRs and gapCp data not shown. As a result of the poor quality of leaf tissue for some samples, Fiirma amplification of all markers was successful only for 74 out of and 99 out of individuals from AH and ATL, respectively.

Given the numbers of nuclear markers firmz, a low power to detect sexually produced identical genotypes is possible, especially in AH, where there is a single most common nuclear gapCp-M allele Supporting Information Table S2.

The O r function describes the expected number of points stems at a distance r from an arbitrary point.

Alsophila firma ·

Worldwide distribution of Cyatheaceae based on data from Encyclopedia of Life www. Phylogenetic relationships of furma enigmatic fern families Hymenophyllopsidaceae and Lophosoriaceae: Sorry, your blog cannot share posts by email.

The reproductive biology of ferns appears to be more complex than previously thought, leading to different genetic and evolutionary patterns Soltis et al. The successful assessment of the mechanisms behind SGS in ferns, however, needs to incorporate the simultaneous study of the ecology and genetics of the two free-living stages.

Spatial structure and genetic diversity of two tropical tree species with contrasting breeding systems and different ploidy levels.