macrofauna


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Related to macrofauna: faunas

mac·ro·fau·na

 (mă′krō-fô′nə)
n. pl. macrofauna or ma·cro·fau·nas
Macroscopic animals of soil or benthic sediments that are greater than about 1 or 2 millimeters in size, such as earthworms or polychaetes.

mac′ro·fau′nal adj.

macrofauna

(ˈmækrəʊˌfɔːnə)
n
(Biology) any animals visible to the naked eye
References in periodicals archive ?
En el presente trabajo se describe la distribucion espacial de la macrofauna bentonica en la Ensenada de Sechura, Piura (5[grados]12'-5[grados]50'S y 81[grados]12'-80[grados]51'W).
The habitat associations of these larger macrofauna and megafauna have been well described from submersible observations and monitoring studies (Hessler et al., 1985; Fustec et al., 1987; Shank et al., 1998), but much less information is available on the spatial patterns of smaller macrofauna.
One classification scheme (and there are many) is to divide soil organisms into the following groups, which become progressively smaller and less complex as you proceed: macrofauna, mesofauna, microfauna, microorganisms.
The evolution of the macrofauna in the Spanish Toarcian is interpreted on the background of an Early Toarcian mass extinction recognized world-wide.
Macrofauna are animals large enough for us to see, like earthworms and woodchucks.
The number of bacteria colonies and the number of soil organisms, mesofauna and macrofauna, from various sites were collected to determine the fertility and productiveness of fill dirt versus virgin soil at construction sites.
In the laboratory, the material from each core retained on the 250-[micro]m mesh was elutriated in supersaturated sucrose solution to remove juvenile macrofauna and sediments were sorted to remove larger macrofauna.
A sense of the biodiversity of any landscape can also be assessed through less formal observation: the number of bird species, the development of strata within forest communities, the presence of earthworms and other micro- and macrofauna in the soil, and the presence of species that for a developed food web are all indicators of the relative richness of species.
In addition, John Lambshead (Museum of Natural History, UK) suggests that the number of deep-sea species of smaller multi-celled animals (the meiofauna) is even greater than the numbers of macrofauna.
The cores were sectioned to sediment depths of 0-3 cm and 3-10 cm to examine the vertical distribution of macrofauna. Each sediment section was stored in 4% Formalin made with filtered sea-water.
Demersal fish food habits, based on benthic macrofauna as important prey, have received increased attention since the 1950's (Wigley, 1956; Wigley and Theroux, 1965; Langton and Bowman, 1980, 1981; Hahm and Langton, 1984).