The phrase "ash species" is correct and usable in written English.
It can be used when referring to different types or varieties of ash trees or plants within the genus Fraxinus.
Example: "The forest is home to several ash species, each with unique characteristics and ecological roles."
Alternatives: "varieties of ash" or "types of ash trees".
We are looking at all 35 ash species in the world.
What ash species are at risk?
Ash species and water treatment had little effect on A. planipennis mortality in either year.
The emerald ash borer (EAB) is an exotic insect pest currently threatening ash species in the Great Lakes region.
Electron microscopy and chemical analyses, combined with thermodynamic equilibrium calculations, were carried out for interpreting the effect of ash species on the particle shrinking observed at various temperatures.
Sub-Mediterranean belt consist mainly of Pubescent Oak (Quercus pubescens), Turkey Oak (Quercus cerris), different Mapples (Acer spp ., Ash species (Fraxinus spp ., Hop-hornbeam (Ostrya carpinifolia), some conifers and farmlands (Fig. 2).
Five native forest canopy types were used, Populus tremuloides (quaking aspen), Acer saccharum (sugar maple), Quercus spp./Carya spp. (oak/hickory), Fraxinus americana (white ash), evergreen species mix Pinus spp./Tsuga canadensis (pine/hemlock), along with one nonnative canopy species, Robinia pseudoacacia (black locust).
The crude protein content is relatively low compared to other ash tree species referred to in the literature (Masson and Decaen 1980, Papachristou 1996, Papachristou et al. 1999; Masson and Decaen 1980).
Chemical composition values and digestion coefficients obtained in the present study are in phase with reported data about the relatively good nutritional value of different ash tree species as forage in the Mediterranean region for ruminants (Masson and Decaen 1980; Papachristou 1996).
The 35 acre Jodrell Bank Arboretum, created in 1972, houses the UK's national collections of crab apple Malus and mountain ash Sorbus species, and the Heather Society's Calluna collection.
The model presented is based on the Kunii Levenspiel theory for circulating fluidized bed and on the recent findings on the properties of CaO as a CO2 sorbent, while taking into account the effects of coal ash and sulfur species.
