We quantified the taxonomic, functional, and phylogenetic diversity of fungi associated with dead moss tissues conifer needles in a forest-tundra ecotone sub-Arctic region, Quebec, Canada. detected 615 operational taxonomic units, total, 84 families 97% sequence similarity by metabarcoding internal transcribed spacer 1 (ITS1) region nuclear ribosomal DNA. Saprotrophs were dominant functional gu...

«Si hasta fechas recientes la seducción aparecía con una cara ambivalente (por un lado remitía a lo que tiene de engaño, por otro, a la admiración que provoca), asistimos ahora a su legitimación como forma deseable de la comunicación social. Ya no se trata de que alguien quiera seducir, sino de que todos quieren ser seducidos, sin que la base falsa o tramposa sobre la que puede estar construida...

Species numbers are increasing rapidly. This is due mostly to taxonomic inflation, where known subspecies are raised to species as a result in a change in species concept, rather than to new discoveries. Yet macroecologists and conservation biologists depend heavily on species lists, treating them as accurate and stable measures of biodiversity. Deciding on a standardized, universal species lis...

A phenetic analysis of the 12 taxa or operational taxonomic units (OTUs) belonging to the three sections; Genea, Neobromus, and Nevskiella of the genus Bromus was performed. Unweighted pair-group method using arithmetic averages (UPGMA) and weighted pair-group method using arithmetic averages (WPGMA) clustering and factoriel method analyses were used to set the taxa apart. Forty-four characters...

Climate warming is predicted to alter species interactions, which could potentially lead to extinction events. However, there is an ongoing debate whether the effects of warming on biodiversity may be moderated by biodiversity itself. We tested warming effects on soil nematodes, one of the most diverse and abundant metazoans in terrestrial ecosystems, along a gradient of environmental complexit...

the genus alyssum l. belongs to the subtribe alyssinae, tribe alysseae and family cruciferae (brassicaceae). this genus is one of the largest genera of the family of cruciferae in iran, and seems to be the most problematic genus in which the boundary of certain species is not completely clear due to the polymorphism of morphological characters. the main objective of this research is to study th...

Microeukaryotes have vital roles for the functioning of marine ecosystems, but still some general characteristics of their current diversity and phylogeny remain unclear. Here we investigated both aspects in major oceanic microeukaryote lineages using 18S rDNA (V4-V5 hypervariable regions) sequences from public databases that derive from various marine environmental surveys. A very carefully an...

In spite of technical advances that have provided increases in orders of magnitude in sequencing coverage, microbial ecologists still grapple with how to interpret the genetic diversity represented by the 16S rRNA gene. Two widely used approaches put sequences into bins based on either their similarity to reference sequences (i.e., phylotyping) or their similarity to other sequences in the comm...

MOTIVATION Many metagenomic studies compare hundreds to thousands of environmental and health-related samples by extracting and sequencing their 16S rRNA amplicons and measuring their similarity using beta-diversity metrics. However, one of the first steps--to classify the operational taxonomic units within the sample--can be a computationally time-consuming task because most methods rely on co...