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The conclusions of these analyses are that, besides some widespread and eurytopic species, most sponges have ecological preferences in relation to depth and degree of wave exposure, which are the main factors determining reef physiognomy.
those due to glaciation and major sea level changes) were global in scale, the isolation of the Atlantic fauna, the dominance of eurytopic species, and slow evolutionary rates (Potts 1984) have apparently retarded recovery of a more speciose regional fauna.
It is unlikely that native shellfish will exhibit useful defensive preadaptations to this voracious generalist, eurytopic, euryhaline predator.
A second approach, especially useful for opportunisitic or eurytopic consumers, is to categorize prey items by size without regard to their taxonomic identity.
Concerning the type of bottom and substrate, certain species are found preferably over calcareous algae bottoms, other on soft bottoms with a predominance of sand or mud, and some are eurytopic.
Agyneta rurestris, Oedothorax retusus), of thermophilous (Xerolycosa nemoralis, Micaria silesiaca) and eurytopic (Diplostyla concolor) species often preferring open sites, and of some typical pine forest species (Tapinocyba pallens, Centromerus arcanus).
These species are more eurytopic than the others but are nevertheless sensitive to ecological factors common to several habitats.
Nevertheless, many European harvestmen researchers have described the latter as eurytopic (Platen et al.