Changes in the composition of planktonic ostracod populations across a range of latitudes in the North-east Atlantic

Angel, Martin V.; Błachowiak‐Samołyk, Katarzyna; Drapun, Inna; Castillo, Ruth

doi:10.1016/j.pocean.2006.11.002

Cited by 31 publications

(17 citation statements)

References 23 publications

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“…Rather surprisingly this study showed that sampling depth was not a statistically significant variable in contrast to the results of Angel et al (2007). A possible explanation could be that some of the species in our survey tend to be concentrated within relatively narrow depth ranges of the mesopelagial zone.…”

Section: Environmental Influence On Pelagic Ostracoda Distributioncontrasting

confidence: 85%

“…It was one of the first halocyprids described (Sars, 1865) from high latitudes in the Atlantic from the Lofoten Islands (north-western Norway). Since then it has been the most frequently recorded species of halocyprid Ostracoda (e.g., Müller, 1906;Skogsberg, 1920;Deevey, 1968;Poulsen, 1973;Angel, 1977a, b;Martens, 1979;Angel et al, 2007). Published reports show it has a cosmopolitan distribution, but populations from different regions have widely differing size ranges (e.g., Skogsberg, 1920;Deevey, 1968;Mumm, 1991).…”

Section: Species Composition and Abundancesmentioning

confidence: 99%

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Distribution of pelagic Ostracoda (Crustacea) inhabiting the waters around Svalbard (Arctic Ocean: 76°36–81°50N)

2011

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Although, pelagic Ostracoda are locally abundant component of the mesozooplankton in the waters around Svalbard, the group remains poorly characterised both taxonomically and ecologically. Herein, the spatial and vertical variations in abundances and species composition of the pelagic Ostracoda assemblages are examined and related to the water masses. The study is based on a series of zooplankton samples collected with a multinet plankton sampler (MPS; HydroBios, Kiel), consisting of five nets fitted with a 180-lm mesh net. Samples were collected from deep stations (i.e., with bottom depths [300 m) around Svalbard and included localities influenced by the West Spitsbergen Current and the East Spitsbergen Current and to the north of Svalbard, between years 2001 and 2006. Throughout all the samples studied Discoconchoecia elegans was the numerically dominant species. The other species found were Boroecia maxima, Boroecia borealis, Obtusoecia obtusata, and a rare novel Boroecia species. Analyses of the pelagic Ostracoda assemblages showed that their variability was predominantly influenced by four factors: water temperature, geographical position, bottom depth and season. The highest densities of D. elegans were correlated with salinities [35 PSU whereas B. maxima distribution was dependent on latitude. Highest concentrations of B. borealis were determined by longitude. Abundances of O. obtusata were positively correlated with warmer water temperatures. Thus this work suggests that halocyprids have the potential to be good indicators of environmental changes associated with shifts in climate at high latitudes in the North Atlantic.

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Section: Environmental Influence On Pelagic Ostracoda Distributioncontrasting

confidence: 85%

Section: Species Composition and Abundancesmentioning

confidence: 99%

Distribution of pelagic Ostracoda (Crustacea) inhabiting the waters around Svalbard (Arctic Ocean: 76°36–81°50N)

2011

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“…At 900-1000m single specimens of Mikroconchoecia acuticosta and Gaussicia subedentata were collected. This is the first record of M. acuticosta from outside the North Atlantic (Angel et al, 2007). The first specimens of bathypelagic species began to be encountered at 1200-1400 m, namely Conchoecissa plinthina, Conchoecissa symmetrica, Muelleroecia aff.…”

Section: Bathymetric Distribution Of Planktonic Ostracods (Ostracoda;mentioning

confidence: 82%

“…At depths between 200 and 1000 m Metaconchoecia inflata was the only species that was relatively abundant. It is notable that between 300-1000m where there were very low ostracod abundances, there was a complete absence of any mesopelagic species; large mesopelagic assemblages are a characteristic feature of the ostracod populations in the North Atlantic (Angel et al 2007). Comparing the profile of oxygen concentration with the profiles of the halocyprid abundances (Table 1 and Figure 2), it can be seen that Euconchoecia omanensis was almost entirely restricted to the well-oxygenated water (Figure 4).…”

Section: Species Profilesmentioning

confidence: 96%

“…The sampling procedures adopted in the Gulf of Oman were identical to those used for the Atlantic surveys (Angel, 1969(Angel, , 1979Angel and Fasham, 1973, 1974Angel et al 2007; Fasham and Angel, 1975), so direct comparisons can be made between the profiles observed. The environment conditions in the Gulf of Oman are markedly different from those in the North Atlantic.…”

Section: Introductionmentioning

confidence: 99%

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Bathymetric Distribution of Planktonic Ostracods (Ostracoda; Crustacea) in the Gulf of Oman (Northwest Indian Ocean) in relation to the Oxygen Minimum Zone

Angel¹

2017

IJMBR

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The composition and abundances of populations of planktonic ostracods have been analysed from a day and a night series of stratified samples collected from the Gulf of Oman during the Northeast monsoon to a maximum depth of 2000 m. The profiles show that the ostracods were strongly affected by the intense Oxygen Minimum Zone (OMZ), which at the time extended down through much of the water column from 80-1000 m. Comparisons with similar profile data at similar latitude in the Northeast Atlantic demonstrate the overwhelming impact of the OMZ on the distributions of the planktonic ostracods. Forty-two species were identified from the Gulf of Oman, far fewer than the 61 species collected in the Northeast Atlantic. The ostracods are detritivores and probably play an important role in modifying midwater fluxes of organic material.

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A Census of Zooplankton of the Global Ocean

Bucklin

Nishida

Schnack-Schiel

et al. 2010

Life in the World's Oceans

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IntroductionThe animals that drift with ocean currents throughout their lives (that is, the holozooplankton) include approximately 7,000 described species in 15 phyla. The holozooplankton assemblage is the focus of the Census of Marine Zooplankton (CMarZ; www.CMarZ.org ), which has produced comprehensive new information on species diversity, distribution, abundance, biomass, and genetic diversity. Our realm among Census of Marine Life projects is the open ocean; we have sampled biodiversity hot spots throughout the world ' s oceans: little -known seas of Southeast Asia, deep -sea zones below 5,000 m, and polar seas. We have used traditional plankton nets and newer sensing systems deployed from ships and submersibles. Our analysis has included traditional microscopic and morphological examination, as well as molecular genetic analysis of zooplankton populations and species. CMarZ has contributed to Census legacies in data and information for the Ocean Biogeographic Information System (see Chapter 17 ) and proven technologies of DNA barcoding. Our photograph galleries of living plankton have captured public interest, and our training workshops have enhanced taxonomic expertise in many countries. The knowledge gained will provide a new baseline for detection of impacts of climate change, and will contribute to our fundamental understanding of biogeochemical transports, fl uxes and sinks, productivity of living marine resources, and marine ecosystem health. Historical PerspectiveDespite more than a century of sampling the oceans, comprehensive understanding of zooplankton biodiversity has eluded oceanographers because of the fragility, rarity, small size, and/or systematic complexity of many taxa. For many zooplankton groups, there are long -standing and unresolved questions of species identifi cation, systematic relationships, genetic diversity and structure, and biogeography.There has never been a taxonomically comprehensive, global -scale summary of the current status of our knowledge of biodiversity of marine zooplankton. Although studies of the taxonomy, distribution, and abundance of zooplankton date back as far as the middle of the nineteenth century, worldwide distribution patterns have not been mapped for all described species. The cosmopolitan or circumglobal distributions characteristic of holozooplankton species of many groups have created special Life in the W orld's Oceans: Diversity, Distribution, and Abundance Edited

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Changes in the composition of planktonic ostracod populations across a range of latitudes in the North-east Atlantic

Cited by 31 publications

References 23 publications

Distribution of pelagic Ostracoda (Crustacea) inhabiting the waters around Svalbard (Arctic Ocean: 76°36–81°50N)

Distribution of pelagic Ostracoda (Crustacea) inhabiting the waters around Svalbard (Arctic Ocean: 76°36–81°50N)

Bathymetric Distribution of Planktonic Ostracods (Ostracoda; Crustacea) in the Gulf of Oman (Northwest Indian Ocean) in relation to the Oxygen Minimum Zone

A Census of Zooplankton of the Global Ocean

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