Denitrification is a critical process that can alleviate the effects of excessive nitrogen availability in aquatic ecosystems subject to eutrophication. An important part of denitrification occurs in benthic systems where bioturbation by meiofauna (invertebrates <1 mm) and its effect on element cycling are still not well understood. Here we study the quantitative impact of meiofauna populations...

Wrack deposits provide potential food, shelter and breeding sites for marine and terrestrial invertebrate macrofauna and can support communities with high diversity, abundance and biomass. Macrofauna may also play important roles in the fragmentation, decomposition and incorporation of wrack into the beach and nearshore ecosystem. In this chapter I sampled surface-active macrofauna using pitfal...

Patterns in community structure of meiofauna and macrofauna in relation to Portuguese clam dredging were compared during a 2-y-period o¡ Lagos and Vilamoura, south Portugal. SCUBA divers randomly sampled corer and quadrat samples before and immediately after simulating commercial dredge ¢shery. Univariate measures (abundance, number of taxa, evenness, diversity and biomass) and multivariate ana...

In this study, we analyzed the spatial and seasonal distributions of ten species benthic macrofauna 12 water environmental parameters at thirty-six sampling stations in subtidal zone near Daya Bay Nuclear Power Plant. The results showed that there were four types distribution characteristics for 10 macrobenthic animals factors nuclear power plant: (1) three macrofauna, namely Apionsoma (Apionso...

The burrow walls created by macrofauna in aquatic sediments are sites of intense chemical mass transfer. Quantitative measurement of their significance is, however, difficult because chemistry in the immediate vicinity of burrow walls is temporally dynamic due to periodic ventilation of burrows by macrofauna. A temporally dynamic, 2D multicomponent diffusion-reaction model was utilized to depic...

&#x0D; Focus:&#x0D; To appreciate the biodiversity of Arctic Ocean and ocean floor, with a particular focus on lesser-known species. What kind micro- meio-, macrofauna (species) live floor what do they look like?&#x0D; Learning objectives:&#x0D; In this activity, pupils will identify (one, two, or more) species living at close to sculpt them using modelling clay. Through hopefully begin underst...

abstract soil invertebrate and their spatial pattern are affected strongly by environmental factors. spatial variability of soil properties is one of the most important reasons of the macrofauna variability. this study was conducted to investigate the spatial variability of soil properties and soil macrofauna biomass in the riparian forest landscape of karkhe river. soil macro fauna were sample...

We examined the habitat of juvenile haddock on the eastern Scotian Shelf (off Nova Scotia, Canada) in relation to grab-sampled benthic macrofaunal invertebrate species assemblages in order to determine whether there were significant differences in benthic macrofauna between areas of historically persistent high and low juvenile haddock abundance. Our analyses were conducted over two spatial sca...