Results 31 to 40 of about 3,499 (232)

Using ecological partitions to assess zooplankton biogeography and seasonality

open access: yesFrontiers in Marine Science, 2023
Zooplankton play a crucial role in marine ecosystems as the link between the primary producers and higher trophic levels, and as such they are key components of global biogeochemical and ecosystem models. While phytoplankton spatial-temporal dynamics can
Niall McGinty   +3 more
doaj   +1 more source

Exceptional endemicity of Aotearoa New Zealand biota shows how taxa dispersal traits, but not phylogeny, correlate with global species richness. [PDF]

open access: yesJ R Soc N Z
ABSTRACT Species’ with more limited dispersal and consequently less gene flow are more likely to form new spatially segregated species and thus contribute disproportionally to endemic biota and global species richness. Aotearoa New Zealand has exceptional endemicity, with 52% of its 54,000 named species endemic, including 32%, 39% and 68% for ...
Costello MJ.
europepmc   +2 more sources

Ecosystem maturation follows the warming of the Arctic fjords

open access: yesOceanologia, 2017
Two fjords in West Spitsbergen (Hornsund 77°N and Kongsfjorden 79°N) differ with regard to their exposure towards increasingly warm Atlantic water inflow.
Jan Marcin Węsławski   +3 more
doaj   +1 more source

Distribution, maturity and population structure of Meganyctiphanes norvegica and Thysanoessa inermis around Iceland in spring [PDF]

open access: yes, 2017
This study aims to explain the distribution, maturity and population structure of Meganyctiphanes norvegica and Thysanoessa inermis in springtime in relation to main hydrographic regions around Iceland: Atlantic in the southwest, Atlantic-Arctic mixture ...
Astthorsson, Olafur S   +3 more
core   +1 more source

Molecular prey identification in wild Octopus vulgaris paralarvae [PDF]

open access: yes, 2012
11 páginas, 3 figuras, 4 tablas.-- The final publication is available at www.springerlink.comThe trophic ecology of Octopus vulgaris paralarvae collected in 2008 off the Ría de Vigo, NW Spain (42° 12.80′ N–9° 00.00′ W), was approached by both ...
González, Ángel F.   +3 more
core   +1 more source

The other krill: overwintering physiology of adult Thysanoessa inermis (Euphausiacea) from the high‑Arctic Kongsfjord

open access: yesAquatic Biology, 2015
Polar environments like the high-Arctic Kongsfjord are characterized by pronounced seasonality leading to strong variations in primary production. Food sources are particularly scarce during winter. Herbivorous krill, such as the arcto-boreal Thysanoessa
K Huenerlage   +3 more
doaj   +1 more source

State of plankton community in the Kuril waters under recent renewal of mass feeding northward migrations of subtropical fish

open access: yesИзвестия ТИНРО, 2017
State of plankton community was monitored in the Pacific waters at Kuril Islands in July-August 2016, in conditions of mass feeding migrations of subtropical fish.
Natalya A. Kuznetsova   +1 more
doaj   +1 more source

Sticholonche zanclea (Protozoa, Actinopoda) in fecal pellets of copepods and Euphausia sp. in Brazilian coastal waters

open access: yesBrazilian Journal of Biology
Fecal pellets produced by mesozooplanktonic copepods (Centropages velificatus and Paracalanus parvus) and macrozooplanktonic Euphausiacea (Euphausia sp.) were examined using scanning electron microscopy.
E. M. Eskinazi-Sant'Anna
doaj   +1 more source

Chromosome Diversity in Mediterranean and Antarctic Euphausiid Species (Euphausiacea) [PDF]

open access: yesJournal of Crustacean Biology, 1998
Chromosome number and morphology were studied in gonadal tissue from eight euphausiid species, using an air-drying technique and Giemsa staining. Among Mediterranean species, haploid chromosome numbers were: n = 19 in Euphausia hemigibba, Euphausia brevis, and Nematoscelis megalops, n = 18 in Euphausia krohni, and n = 11 in Nyctiphanes couchi.
Thiriot-Quievreux, C   +2 more
openaire   +2 more sources

Intercolony Comparison of Diets of Western Gulls in Central California [PDF]

open access: yes, 2016
As human populations expand, they force free-ranging animals to adapt to an increasingly urban environment, resulting in changes in diets, reproductive success, and mortality.
Cassell, Anne L.
core   +1 more source

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