e-journal

Jellyfish diversity and distribution patterns in the tropical Southwestern Atlantic

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Jellyfish are often the most prominent components of plankton, with severe consequences for fisheries and tourism. However, in tropical regions, there is much uncertainty about these consequences due to the lack of basic data. Our objective was to improve the knowledge about jellyfish in the Western Atlantic, with an emphasis on understanding diversity, abundance, and distribution patterns. Samples were collected at 34 stations in 1995 using a 300-lm-mesh Bongo net. The 21 species identified belonged to Hydromedusae (11), Siphonophora (nine), and Scyphomedusae (one). The overall mean density was low (5.2
5.3 ind. m
3). Total Hydromedusae biomass was 130.86 mg C m 3, and total Siphonophora biomass was 19.04 mg C m
3. Chelophyes appendiculata (Eschscholtz, 1829) was the most frequent species captured in the oceanic samples, and Aglaura hemistoma (P
eron & Lesueur, 1810) was the most common in the neritic region. The latter species is sometimes characterized as a bloom associated with the most polluted and eutrophic river plumes. The main role of jellyfish species in the area is as a higher-order carnivore. A cross-shelf significant difference (P < 0.05) was registered, with higher species numbers in oceanic regions and higher densities and biomass in neritic regions.

Keywords
Biodiversity; Cnidaria; gelatinous plankton distribution; neritic-oceanic; tropical Atlantic

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Ketersediaan

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Informasi Detail

Judul Seri

Marine Ecology

No. Panggil

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Penerbit

Brazil : Blackwell Verlag GmbH., 2014

Deskripsi Fisik

Marine Ecology 2015

Bahasa

English

ISBN/ISSN

0173-9565

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

36 (2015) 93–103

Subjek

PERIKANAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

Mutia/Agus

Versi lain/terkait

Lampiran Berkas

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