Filters: Tags: Leopold (X)
11 results (47ms)|
Filters
Date Range
Extensions Types Contacts Categories Tag Types Tag Schemes |
ADMMR map collection: Arizona State Map showing Keystone Mine Location; 1 in. to 50 miles; 9 x 11 in.
Categories: Data;
Tags: Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
Dataset,
ADMMR map collection: 500 & 600 Foot Levels of the Vertical Hagerman Shaft, Keystone Copper Mining Company; 10 x 13 in.
Categories: Data;
Tags: 1940s,
Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
ADMMR map collection: Keystone and Coronado Copper, St. George Claim Map; 1 in. to 100 feet; 24 x 31 in.
Categories: Data;
Tags: 1940s,
Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
The strength of top-down forces in terrestrial food webs is highly debated as there are few examples illustrating the role of largemammalian carnivores in structuring biotic and abiotic systems. Based on the results of this studywe hypothesize that an increase in human visitation within Zion Canyon of Zion National Park ultimately resulted in a catastrophic regime shift through pathways involving trophic cascades and abiotic environmental changes. Increases in human visitors in Zion Canyon apparently reduced cougar (Puma concolor) densities, which subsequently led to higher mule deer (Odocoileus hemionus) densities, higher browsing intensities and reduced recruitment of riparian cottonwood trees (Populus fremontii),...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Biological Conservation,
Leopold,
biodiversity,
cottonwood,
deer,
ADMMR map collection: Keystone Mining Company Geologic Map; 1 in. to 100 feet; 42 x 31 in.
Categories: Data;
Tags: 1940s,
Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
ADMMR map collection: Keystone and Colorado Copper, St. George Claim; 1 in. to 100 feet; 41 x 31 in.
Categories: Data;
Tags: Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
Dataset,
ADMMR map collection: Plan and Sections with Drill Holes, Keystone and Colorado Copper, St. George Claim; 1 in. to 100 feet; 38 x 31 in.
Categories: Data;
Tags: Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
Dataset,
ADMMR map collection: Section Through Drill Hole 1, Keystone Zinc-Copper Project 1484; 1 in. to 200 feet; 15 x 9 in.
Categories: Data;
Tags: Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
Dataset,
ADMMR map collection: Keystone and Coronado Copper, St. George Claim Map; 1 in. to 100 feet; 24 x 31 in.
Categories: Data;
Tags: 1940s,
Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
ADMMR map collection: Keystone and Coronado Copper, St. George Claim Map; 1 in. to 100 feet; 25 x 30 in.
Categories: Data;
Tags: 1940s,
Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
ADMMR map collection: Property Map of Keystone & St. George Copper-Zinc Deposits; 1 in. to 1125 feet; 11 x 8 in.
Categories: Data;
Tags: Arizona,
Cochise County,
Cochise metallic mineral dist.,
Copper, Oxide,
Dataset,
|
|
