The ASC (Isbell 2002) is a hierarchical key and consists of five tiers: Orders, Suborders
, Great Groups, Subgroups and Families.
They are constituted by typical taxa of the Boreal Realm, on which representatives of the suborder
Lagenina are the most abundant components (Haynes, 1981; Murray, 1989), usually accompanied by variable percentages of representatives of the suborders
Textulariina, Spirillinina, Miliolina, Robertinina and Rotaliina depending on paleoecological conditions.
Numbers given for both the entire order and individually for each suborder
Generalist Specialist Lotic Lentic Odonata 23/52 (44%) 56/84 (67%) 38/52 (73%) 41/84 (49%) Anisoptera 15/35 (43%) 42/58 (72%) 27/32 (84%) 30/61 (49%) Zygoptera 8/17 (47%) 14/26 (54%) 11/20 (55%) 11/23 (48%)
2) differed (F = 3.64; df = 8, 112; P < 0.001) among orders or suborders
. These taxonomic levels explained 20.7% of variation in adjusted N mass.
(2002) reconstructed beetle phylogeny using 18S sequences from 25 beetle species in 24 families representing all four suborders
. They also sampled a diverse array of 46 other insects.
While the sequence predicted by the CT is in the order Tenosol, Chromosol, Sodosol, and Vertosol Suborders
, the GARP model predicted a sequence of Vertosol, Sodosol, and Vertosol Suborders
* Udalfs are more extensive than the other suborders
of Alfisols (Figure 3-6).
In the ASC no Subgroups exist for the Supratidal and Extratidal Suborders
and while 3 Subgroups are available for Intertidal Hydrosols, none of these is applicable to the Sulfuric or Sulfidic Great Groups (Isbell 2002).
He describes the characterization of the Tylenchida, including the suborders
and their families and superfamilies, morphometric behavior and functional morphology, including body diameter and pharynx relationships, the position of the median bulb and vulva, stylet growth, and tail length, the body wall including the body cuticle and excretory-secretory system, the nervous system, the head, the digestive system, and the genital systems of both male and female.