Fleas and ticks in armadillos from Argentinean Patagonia: diversity, abundance and distribution

Instrumental neutron activation analysis (INAA) technique was used to investigate the abundance and distribution of rare earth elements (REE) in soil around Kaduna Refinery. The aim of the study is to assess the rare elements potential of Nigeria for economic exploitation. Five REEs (La, Dy, Eu, Yb, and Lu) were detected in varying concentrations ranging from a minimum of 0.6 µg/g (Lu) to a maximum of 249.0 µg/g (La). The elements existed with trends consistent with the natural pattern of REEs in soil, showing significant Eu and Dy anomalies which characterize upper plains and flood plains. The levels of REEs in soil in the study area were generally slightly above background levels, with minimal (La, Dy, and Eu), moderate (Yb), and significant (Lu) enrichments and trending: Lu ˃Yb ˃ Eu ˃ Dy ˃ La. The abundance of the REEs investigated cannot establish a potential of Nigeria for economic exploitation of the mineral, hence, rare earth project in the study area is not viable at the moment.

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Winter abundance and distribution of Euphausia superba, E. crystallorophias, and Thysanoessa macrura in Gerlache Strait and Crystal Sound, Antarctica

Marine Ecology Progress Series ◽

10.3354/meps111131 ◽

1994 ◽

Vol 111 ◽

pp. 131-142 ◽

Cited By ~ 1

Author(s):

W Nordhausen

Keyword(s):

Euphausia Superba ◽

Thysanoessa Macrura ◽

Abundance And Distribution

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Warming temperatures alter the relative abundance and distribution of two co-occurring foundational seagrasses in Chesapeake Bay, USA

Marine Ecology Progress Series ◽

10.3354/meps12620 ◽

2018 ◽

Vol 599 ◽

pp. 65-74 ◽

Cited By ~ 6

Author(s):

JP Richardson ◽

JS Lefcheck ◽

RJ Orth

Keyword(s):

Chesapeake Bay ◽

Relative Abundance ◽

Abundance And Distribution

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THE ABUNDANCE OF RECENT FORAMINIFERA IN SURFACE SEDIMENT OF AMBON BAY

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v2i1.7859 ◽

2010 ◽

Vol 2 (1) ◽

Author(s):

Suhartati M. Natsir

Keyword(s):

Surface Sediment ◽

Benthic Foraminifera ◽

Sea Water ◽

Planktonic Foraminifera ◽

Sediment Characteristic ◽

Abundance And Distribution

Foraminifera are generally live in sea water with various sizes. These organisms consist of planktonic and benthic foraminifera. Geological activity on plutonic and volcanic with vomiting magma is transpiring on, and then affects sedimentation and foraminiferal abundance of Ambon Bay. The study was determined to study the abundance and distribution of foraminifera based on the sediment characteristic of Ambon Bay. Sample collected in 2007 of Ambon Bay showed that only 29 samples of 50 samples containing foraminifera. The collected sediments have 86 species of foraminifera, consisting 61 species of benthic foraminifera and 25 species of planktonic foraminifera. The dominant benthic foraminifera in the surface sediment of Ambon bay were Amphistegina lessonii, Ammoniabeccarii,Elphidium craticulatum,Operculina ammonoides and Quinqueloculina parkery. The planktonic foraminifera that were frequently collected from the bay were Globorotalia tumida, Globoquadrina pseudofoliata, Globigerinoides pseudofoliata, Globigerinoides cyclostomus dan Pulleniatina finalis. Generally, the species dwelled as abundant on substrate sand, whereas the areas within substrate mud have no foraminifera lie on them. Keywords: Foraminifera, Abundance, Sediment, Ambon Bay

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