Results 31 to 40 of about 3,801 (201)

Sub-frontal niches of plankton communities driven by transport and trophic interactions at ocean fronts [PDF]

open access: yesBiogeosciences, 2023
Observations and theory have suggested that ocean fronts are ecological hotspots, associated with higher diversity and biomass across many trophic levels. The hypothesis that these hotspots are driven by frontal nutrient injections is seemingly supported
I. Mangolte   +3 more
doaj   +1 more source

Distribution of siphonophores in the Northwest Pacific Ocean and links to environmental conditions

open access: yesFrontiers in Marine Science, 2023
Despite their abundance in marine ecosystems, studies on siphonophores are limited. In this study, 26 species of siphonophores in the Northwest Pacific Ocean were identified during multiple cruises of the R/V ISABU from 2018–2020, and various factors ...
Nayeon Park   +5 more
doaj   +1 more source

Phylogeny: The Continuing Classificatory Conundrum of Chaetognaths [PDF]

open access: yesCurrent Biology, 2006
The phylogenetic conundrum posed by the Chaetognatha, a cryptic phylum consisting largely of planktonic predators, is the subject of two short papers in this issue of Current Biology. These analyses go some way towards defining the phylogenetic position of the chaetognaths, which possess features apparently spanning the protostome/deuterostome divide.
Ball, Eldon, Miller, David J.
openaire   +3 more sources

Evolution of Synonymous Codon Usage in the Mitogenomes of Certain Species of Bilaterian Lineage with Special Reference to Chaetognatha

open access: yesBioinformatics and Biology Insights, 2016
Chaetognatha is a minor phylum, comprising transparent marine invertebrates varying in size from 0.5 to 12 cm. The exact phylogenetic position of Chaetognatha in Metazoa has not been deciphered as some embryological characteristics place chaetognaths ...
Sudeesh Karumathil   +5 more
doaj   +1 more source

Small scale distribution patterns and vertical migration of North Sea erring larvae (Clupea harengus, Teleostei: Clupeidae) in relation to abiotic and biotic factors [PDF]

open access: yes, 2009
The distribution of herring larvae in relation to environmental conditions and the occurrence of possible prey and predator organisms was studied during a 4-day period on a permanent station in the northern North Sea in September 1999.
Haslob, Holger   +2 more
core   +3 more sources

Nearshore marine ecology at Hutchinson Island, Florida: 1971-1974. VI. plankton dynamics, 1971-1973, VII. phytoplankton 1971-1973, VIII. zooplankton, 1971-1973, IX. diel plankton, 1973-1974, X. benthic algae species list [PDF]

open access: yes, 1979
(Document has 122 pages.
Glass, Brian M.   +6 more
core  

The IceShark, an effective method for sampling plankton under sea ice

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Seasonal sea ice plays a crucial role in shaping coastal ecosystem dynamics throughout the circumpolar region. Of particular interest to oceanographers is the ice‐ocean interface which functions as a multidimensional habitat, supporting both sympagic algae and pelagic phytoplankton in the under‐ice surface waters.
Eleanor A. Barry   +4 more
wiley   +1 more source

Relationship between spatial distribution of chaetognaths and hydrographic conditions around seamounts and islands of the tropical southwestern Atlantic

open access: yesAnais da Academia Brasileira de Ciências, 2014
Relationship between spatial distribution of chaetognaths and hydrographic conditions around seamounts and islands off Northeastern Brazil were analyzed from 133 oceanographic stations during the months of January – April of 1997 and April – July of 1998.
CHRISTIANE S. DE SOUZA   +2 more
doaj   +1 more source

Translational machinery of the chaetognath Spadella cephaloptera: a transcriptomic approach to the analysis of cytosolic ribosomal protein genes and their expression

open access: yesBMC Evolutionary Biology, 2007
Background Chaetognaths, or arrow worms, are small marine, bilaterally symmetrical metazoans. The objective of this study was to analyse ribosomal protein (RP) coding sequences from a published collection of expressed sequence tags (ESTs) from a ...
Casanova Jean-Paul   +4 more
doaj   +1 more source

The Chaetognaths of the water of the Peru region [PDF]

open access: yes, 1964
ENGLISH: A study has been made of the distributions of the 28 species of Chaetognatha in the waters off Peru and southern Ecuador, based primarily on data from oceanographic surveys carried out between 1958 and 1961 by the Inter-American Tropical Tuna ...
Sund, Paul N.
core  

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