Results 11 to 20 of about 1,223 (125)
Accounting for Intra- and Intergenomic Sequence Variation in Reference Barcodes Improves eDNA Metabarcoding Biodiversity Assessment. [PDF]
Mol Ecol ResourABSTRACT Environmental DNA (eDNA) metabarcoding can rapidly characterise biodiversity, yet its accuracy and effectiveness are limited by incomplete DNA barcode reference databases. We evaluated how comprehensive reference databases that include sequence variation within genomes (intragenomic) and across individuals and species (intergenomic) improve ...
McCartin LJ +11 more
europepmc +2 more sources
Observations of Modified Polyps and Polyp Leaves in Sea Pens (Cnidaria: Octocorallia): The Cases of <i>Ptilella</i> and <i>Pennatula</i>. [PDF]
Ecol EvolWe describe unusual and mostly unreported morphological traits on colonies of the deep‐water sea pens Ptilella and Pennatula from the Northwest Atlantic, namely the presence of hypertrophied polyps, split polyp leaves, and autozooids budding on the surface of polyp leaves (as opposed to the edges). ABSTRACT Here we describe unusual morphological traits
de Moura Neves B +4 more
europepmc +2 more sources
After the Fall: The Demographic Destiny of a Gorgonian Population Stricken by Catastrophic Mortality
Oceans, 2021 In recent years, the frequency of mass mortality events in marine ecosystems has increased, and several populations of benthic organism have been affected, reducing their density and changing their size and age structure.
Simona Ruffaldi Santori +6 more
doaj +1 more source
Biology Open, 2022 Skeleton formation in corals is a biologically controlled process in which an extracellular organic matrix (OM) is entrapped inside the calcified structure.
Philippe Ganot +5 more
doaj +1 more source
Transcriptomic Responses of Deep-Sea Corals Experimentally Exposed to Crude Oil and Dispersant
Frontiers in Marine Science, 2021 Resource extraction from the ocean comes with ecosystem-wide risks, including threats to its biota such as the habitat forming corals that support elevated biomass and biodiversity.
Danielle M. DeLeo +5 more
doaj +1 more source
A new ROV storage device for deep-sea sampling
Anais da Academia Brasileira de Ciências, 2023 Sampling deep-sea biota is a significant challenge because of the logistics required, in terms of vessels and equipment, to obtain minimally preserved specimens.
ESTÉFANE C. REIS +4 more
doaj +1 more source
Diversity, 2023 The Persian Gulf, a young and shallow epicontinental sea, is known for its unique geological and oceanographic characteristics that foster its diverse and productive marine ecosystems.
Kaveh Samimi-Namin, Bert W. Hoeksema
doaj +1 more source
Ordovician enigmatic sclerite-type elements from western Argentina: possible oldest axial components of alcyonacean octocorals [PDF]
Acta Palaeontologica Polonica, 2021 The unusual findings of Lower and Middle Ordovician tiny sclerite-type elements in the San Juan Formation of the Argentine Precordillera are described and analysed.
Marcelo G. Carrera +3 more
doaj +1 more source
The Biology and Evolution of Calcite and Aragonite Mineralization in Octocorallia
Frontiers in Ecology and Evolution, 2021 Octocorallia (class Anthozoa, phylum Cnidaria) is a group of calcifying corals displaying a wide diversity of mineral skeletons. This includes skeletal structures composed of different calcium carbonate polymorphs (aragonite and calcite). This represents
Nicola Conci +4 more
doaj +1 more source