Results 31 to 40 of about 1,243 (186)

Revealing zooplankton diversity in the midnight zone

Frontiers in Marine Science, 2023
Zooplankton diversity in the deep “midnight zone” (>1000 m), where sunlight does not reach, remains largely unknown. Uncovering such diversity has been challenging because of the major difficulties in sampling deep pelagic fauna and identifying many ...
Carolina E. González, Leocadio Blanco-Bercial, Rubén Escribano, Rubén Escribano, Igor Fernández-Urruzola, Reinaldo Rivera, Osvaldo Ulloa, Osvaldo Ulloa   +7 more
doaj   +1 more source

Using ecological partitions to assess zooplankton biogeography and seasonality

Frontiers 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, Andrew J. Irwin, Zoe V. Finkel, Stephanie Dutkiewicz   +3 more
doaj   +1 more source

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

Aquatic 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, M Graeve, C Buchholz, F Buchholz   +3 more
doaj   +1 more source

Stylocheiron indicus, a new euphausiid (crustacea: euphausiacea) from Indian seas [PDF]

, 1967
In the material of Euphausiacea in the deep-water plankton collections made with the Indian Ocean Standard net from the Indo- Norwegian Project Research Vessel VARUNA off the west coast of India, we have been able to identify 22 species of seven ...
Silas, E G, Mathew, K J
core   +1 more source

Method‐dependent differences in zooplankton abundance and size metrics: Microscopy vs. ZooScan

Limnology and Oceanography: Methods, EarlyView.
Abstract Image‐based approaches such as ZooScan are increasingly used for high‐throughput zooplankton monitoring. However, quantitative evaluations of methodological differences relative to conventional microscopy remain limited. In this study, zooplankton abundance and size‐based metrics obtained from microscopy and ZooScan image analysis were ...
Young Seok Jeong, Min‐Chul Jang, Min Ho Seo, Dong‐Hun Lee, Ho Young Soh   +4 more
wiley   +1 more source

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

Brazilian 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

The habitat niche breadth in a zooplanktivorous High Arctic seabird as an indicator of ocean-related pressures [PDF]

Royal Society Open Science
Seabirds adjust their foraging behaviour to cope with changing environmental conditions by changing prey choice, foraging locations and trip characteristics. We studied the foraging ecology of zooplanktivorous little auks (Alle alle) during chick-rearing
Pauline Bodson, Kaja Bałazy, Katarzyna Błachowiak-Samołyk, Rafał Boehnke, Lech Marek Iliszko, Kristin Piening, Lech Stempniewicz, Martyna Syposz, Emilia Trudnowska, Katarzyna Wojczulanis-Jakubas, Dariusz Jakubas   +10 more
doaj   +1 more source

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

Journal 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, Leitao, A, Cuzin-Roudy, J   +2 more
openaire   +2 more sources

Under the cover of darkness: Foraging behaviour increases on cloudy, new moon nights in a pelagic seabird

Ibis, EarlyView.
While many visual predators feed exclusively during the day, others exploit foraging opportunities at night, although the efficiency with which they do so is strongly influenced by ambient light levels. We investigated the influence of variation in nocturnal light on the foraging behaviour of a small pelagic seabird, the European Storm‐petrel ...
Darren Wilkinson, Adam Kane, Mark Jessopp, John L. Quinn   +3 more
wiley   +1 more source

Distribuição de euphausiacea (Crustacea) (krill) no Arquipélago de São Pedro e São Paulo [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-Graduação em Ecologia, Florianópolis, 2012Eufausiáceos podem ter sua distribuição afetada por diversos fatores, como a temperatura, massas d ...
Menezes, Barbara Santos
core