Thus, allopatric speciation may be a particularly important pathway for the origin of edaphically
restricted paleoendemic species (Table 1).
During the first 2[theta]-30 years of succession following a disturbance, stands are usually dominated by the edaphically
more tolerant manuka, which can form a thick canopy that excludes other species.
Furthermore, Encelia and Gutierrezia also occurred in wash habitats within the mature, edaphically
stable Coleogyne shrublands.
PLACIDL tp = placidly PLACIDYL ta3 = deiphically, edaphically
VALIUM tp = maulvi VALIUM ta2 = alluvium, impluvia, misvalue, velarium PERCODAN tp = endocarp PERCODAN ta1 = cardphone, endocarps, phonecard DEMEROL tp = modeler, remodel DEMEROL ta1 = modelers, rebeldom, remolade, remodels DILAUDID ta6 = individualized LIDOCAINE ta1 = decisional HYCODAN ta2 = diachylon
The following environmental variables were submitted to CCA after initial inspection of patterns of variation and correlation: slope and aspect (coded as degrees from north-northeast, so that higher scores are edaphically
drier); soil concentrations of P, K, Ca, Fe, Al, and [[NO.sub.3].sup.-]; soil PH; and percentage sand and gravel (by mass).
The local codominance of such a guild of legumes on this edaphically
extreme site suggests that there is a selective advantage in the trees being ectomycorrhizal as opposed to being arbuscular (or non-) mycorrhizal.
Studies of edaphic aspects of the big sagebrush hybrid zone (Wang 1996) showed that the soils in the hybrid zone are not a simple blend of parental habitat soils, but rather, are unique and edaphically
more variable than those in parental habitats.
The effects of desurfacing are more drastic where nutrient fertility is concentrated in the top few centimeters and subsoil horizons are edaphically
Effect of shrubs and seasonal variability of rainfall on the establishment of Aspidosperma quebrachoblanco in two edaphically
This is not surprising because southeast Texas, where the Big Thicket is located, is among the wettest areas in Texas and is edaphically
, geologically, and climatically continuous with the southeastern United States (MacRoberts and MacRoberts, 2008b).
(1993) noted that spatial pattern and scale of soil variability can differ markedly among edaphically
identical sites and the differences can be related to disturbance history.
For a variety of reasons, including issues relating to sample size and adequate edaphic characterization of landscapes, we suggest that the -30% of species shown to be edaphically
biased in this study is an underestimate of the true degree of edaphically
related distributional biases.