نتایج جستجو برای: macrofauna

تعداد نتایج: 1048  

2006
P. Schwinghamer

Published data on production of natural populations of benthic organisms were used to derive allometric equations relating annual production per unit biomass (P: B ratio) to mean individual body mass (time and biomass weighted) in the population on which production was measured. Separate equations were derived for meiofauna and macrofauna. Since no published data on production and size-structur...

Journal: :ARPHA Conference Abstracts 2021

During the last decade, considerable efforts have been undertaken to achieve a “good ecological status” of European coastal waters and ensuring development methodological standards for evaluation this status. However, current routine biomonitoring implicates time-consuming costly manual sorting morphological identification benthic macrofauna. In our study, we tested performance environmental DN...

2015
Kathleen E. Conlan David R. Currie Sabine Dittmann Shirley J. Sorokin Ed Hendrycks Covadonga Orejas

Two South Australian canyons, one shelf-incising (du Couedic) and one slope-limited (Bonney) were compared for macrofaunal patterns on the shelf and slope that spanned three water masses. It was hypothesized that community structure would (H1) significantly differ by water mass, (H2) show significant regional differences and (H3) differ significantly between interior and exterior of each canyon...

2003
J. M. Guerra-García F. J. González-Vila J. C. García-Gómez

The aliphatic hydrocarbon composition of sediments from Ceuta harbour, North Africa, was studied to determine the sources, levels and effects of these hydrocarbons on macrofauna composition by considering indices and concentration ratios in multivariate analyses. A total of 21 stations (15 inside and 6 outside the harbour) were sampled using a van Veen grab. High hydrocarbon concentrations (496...

Journal: :Jurnal Agronomi Tanaman Tropika (JUATIKA) 2021

Macrofauna data on post-fire peat soils have been documented in many literatures, but assessments of soil macrofauna recovery peatlands after one and a half years fires are scarce. The aim this study was to evaluate the fires. This research conducted land PT.SSS Kuala Panduk Teluk Meranti District, Pelalawan Regency. by survey method. Determination location using purposive sampling method, espe...

2013
Angus Charles Jackson

THE ECOLOGICAL CAUSES AND CONSEQUENCES OF PREY CHOICE AND ONTOGENETIC NICHE SHIFTS IN THE COMMON GOBY Angus Charles Jackson Foraging behaviour of the common goby, Pomatoschistus microp s was investigated in both the United Kingdom and Sweden, with the aim of establishing causes and consequences of prey choice and ontogenetic shifts in diet. Goby life-cycle could be clearly divided into two stag...

2013
Francesca Rossi Britta Gribsholt Frederic Gazeau Valentina Di Santo Jack J. Middelburg

Ecosystem engineers change abiotic conditions, community assembly and ecosystem functioning. Consequently, their loss may modify thresholds of ecosystem response to disturbance and undermine ecosystem stability. This study investigates how loss of the bioturbating lugworm Arenicola marina modifies the response to macroalgal detrital enrichment of sediment biogeochemical properties, microphytobe...

Journal: :Proceedings of the National Academy of Sciences 2009

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