کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4397634 | 1618489 | 2007 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sediment reworking by marine benthic species from the Gullmar Fjord (Western Sweden): Importance of faunal biovolume
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
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![عکس صفحه اول مقاله: Sediment reworking by marine benthic species from the Gullmar Fjord (Western Sweden): Importance of faunal biovolume Sediment reworking by marine benthic species from the Gullmar Fjord (Western Sweden): Importance of faunal biovolume](/preview/png/4397634.png)
چکیده انگلیسی
In order to compare and quantify sediment reworking activities by different species/functional groups of macrofauna, a laboratory experiment was carried out with species from the Gullmarsfjord (Western Sweden). Monospecific communities of Amphiura filiformis, Echinocardium cordatum, Scalibregma inflatum and Abra nitida were introduced in experimental mesocosms, with identical densities (795 ind. mâ 2), for 10 days. Sediment reworking was studied by quantifying downward and upward movements of fluorescent inert tracers (luminophores). Luminophores with different colour were initially deposited both at the sediment surface and within the sediments. Population biomass and biovolume were also determined. Surface tracers reworking coefficients ranged from 0.6 to 2.2 cm2 yâ 1 and 0.9 to 4.1 yâ 1, respectively for the biodiffusive-like and non-local transports. Calculated biodiffusive-like coefficient was between 1.0 and 2.3 cm2 yâ 1 for the deep tracers. For both tracers, the E. cordatum population presented the highest reworking coefficients. Among the morphological and/or ethological parameters that could determine overall patterns of reworking and differences between species, results have shown a direct relationship between the apparent biodiffusive mixing and the biovolume of the individuals (Db = 0.35 â Biovolume). This suggests that the biovolume of macrofauna may allow a rough estimate of the biodiffusive-like reworking intensity of particles deposited on the sediment surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Experimental Marine Biology and Ecology - Volume 348, Issues 1â2, 7 September 2007, Pages 133-144
Journal: Journal of Experimental Marine Biology and Ecology - Volume 348, Issues 1â2, 7 September 2007, Pages 133-144
نویسندگان
Franck Gilbert, Stefan Hulth, Vincent Grossi, Jean-Christophe Poggiale, Gaston Desrosiers, Rutger Rosenberg, Magali Gérino, Frédérique François-Carcaillet, Emma Michaud, Georges Stora,