A.M. Longacre

Discipline

Géographie (10) Sociologie (3) Archéologie et Préhistoire (2) Anthropologie sociale et ethnologie (2) Littératures (1) Histoire (1) Histoire, Philosophie et Sociologie des sciences (1) Etudes classiques (1)

Discipline

Sociologie (1)

Type de document

Textes imprimés (19)

Type de document

Textes imprimés (1)

Date

Date

Source

Source

Mot-clé

gorge (6) bois (matière) (5) Cercocarpus (5) Timber (5) Brush (5) désert (4) Ceanothus (4) désert (4) crique (3) Adenostoma (3) Sheep (3) Poor (3) fer (2) Area (2) Showing (2) Area (2) Tops (2) Ponderosa pine (2) Oak (2) Iron (2) Foothills (2) ceinture (2) vallée (1) sol (1) mine (1) ordures (1) danger (1) poisson (1) incendie (1) exposition (1)

Documents écrit par A.M. Longacre (19) | parle de A.M. Longacre (1)

North Baldy and in center is shown upper port of Mine Gulch. A very steep and rugged country. Semibarrens are numerous. Shows a few patches of timber holding on.
Longacre A.M. (25 juin 2019)
Sheep Creek country, sage and Joshua trees in canyon bottom. Pinyon types on north slopes, and either Cercocarpus or mixed on the south slopes.
A.M. Longacre (25 juin 2019)
Semi barren slopes south of Iron Fork. Burned over in 1919 and is showing poor comeback. This is characteristic of Iron Mt., slopes also which are very steep.
A.M. Longacre (25 juin 2019)
Pinyon type on north slopes of side canyons in Sheep Creek. The Cercocarpus sp. type can be seen on the ridge top, although it occupies but a small area.
A.M. Longacre (25 juin 2019)
1926 burn on Table Mt. Near Sheep Creek. On the gradual slopes as this is, Cercocarpus sp. has replaced the pinyons, a few of which are still seen in foreground. The larger part of the burn however is almost barren. Very poor recovery due to steep slopes.
A.M. Longacre (25 juin 2019)
Rattlesnake Canyon and Rattlesnake Peak. Shows Spruce growing on north exposure of the canyon.
A.M. Longacre (25 juin 2019)
Mixed brush and semibarren areas on south exposed slopes in Lower Fish Canyon; Upper Fish Canyon of which a part is visible is timbered. Not burned in 50 years.
A.M. Longacre (25 juin 2019)
Slopes of Iron Mt. (unburned) showing the beginning of the timber belt.
A.M. Longacre (25 juin 2019)
Shows desert mixed brush on foothills near Valymero.
A.M. Longacre (25 juin 2019)
Open type of cover in foothills near Valymero.
A. M. Longacre (25 juin 2019)
Quercus chrysolepis. This is about the size it reaches at the higher elevations in the timber belt and is representative of its size in the woodlands on the north side of the divide between San Gabriel Valley and the desert. On the desert side of the San Gabriel Mts. it is more or less stunted except in canyon bottoms and favorable sites.
A.M. Longacre (25 juin 2019)
Shows timber (western yellow pine) type in upper Bear Canyon and on top of Mt. Waterman.
A.M. Longacre (25 juin 2019)
Pinon type -marked as woodland on maps. Cercocarpus betuloides occurs with it generally and some Ceanothus cuneatus
A.M. Longacre (25 juin 2019)
Shows timber type on north sides of Islip and Hawkins, North Baldy Peak in the distance. Composed of sugar and western yellow pine, white fir, and lodgepole pine on ridgetops.
A.M. Longacre (25 juin 2019)
Slopes on edge of desert. Largely Eriogonum fasciculatum and sages.
A.M. Longacre (25 juin 2019)
North side of West Fork of Bear Canyon. Twin Peaks in distance. This area is unburned and carries a heavy load of chamise Ceanothus. The Canyon bottom is covered with a great deal of litter and is quite a fire hazard.
A.M. Longacre (25 juin 2019)
Shows open chararacter of desert mixed brush which occurs on desert side of San Gabriel Mts. Composed of Quercus dumosa, Arctostaphylos glauca, Cercocarpus betuloides.
A.M. Longacre (25 juin 2019)
Shows 1924 burn coming back to mixed brush. Also on right are shown the more barren south slopes coming back to a chamise type with Lotus scoparius, Ceanothus cuneatus, Rhus ovata, mixed in.
A.M. Longacre (25 juin 2019)
Shows 1924 burn with white decomposed burn soil. Very poor comeback of brush. Chamise is the pioneer, with Ceanothus cuneatus coming in feebly.
A.M. Longacre (25 juin 2019)

Dr. and Mrs F. E. Clements make trip with type crews. Left to right: A.M. Longacre, Geo. Falkenburg, Lynne M. Correll, Ray Clar, Warren T. Murphy, George Sargent, Dr. Clements, Mrs. Clements, C.J. Kraebel.
Albert Everett Wieslander (25 juin 2019)