Filters: Tags: deserts (X)
478 results (56ms)
Filters
Date Range
Extensions Types Contacts
Categories Tag Types Tag Schemes |
We examined the content and isotopic composition of nitrogen within soils of a juniper woodland and found that a cryptobiotic crust composed of cyanobacteria, lichens, and mosses was the predominant source of nitrogen for this ecosystem. Disturbance of the crust has resulted in considerable spatial variability in soil nitrogen content and isotopic composition; intercanopy soils were significantly depleted in nitrogen and had greater abundance of 15N compared to intra-canopy soils. Variations in the 15N\14N ratio for inter- and intracanopy locations followed similar Rayleigh distillation curves, indicating that the greater 15N/14N ratios for inter-canopy soils were due to relatively greater net nitrogen loss. Coverage...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Oecologia,
cryptobiotic crusts,
deserts,
nitrogen,
δ15N
This metadata record describes the materials contained in stake folder 696. Stake 696 is located at latitude 36.39889, longitude -112.63056. This location was photographed in the following years: 1872, 1968 and 1972. The materials associated with this item include original best quality images from each repeat date (preserved as digitized film images or in some cases digitized print photographs, depending on availability), scanned film envelopes with camera metadata, records of repeat photography sheets, and all field notes and/or camera notes associated with this stake. All attachments follow the following naming convention: stake_date_material_type_Kanab. Some stakes will have multiple materials from one repeat...
Types: Citation;
Tags: Albion camera,
Colorado River,
Dallmeyer lenses,
Kanab Creek,
Southwestern United States,
This metadata record describes the materials contained in stake folder 713. Stake 713 is located at latitude 36.42478, longitude -112.63036. This location was photographed in the following years: 1872 and 1968. The materials associated with this item include original best quality images from each repeat date (preserved as digitized film images or in some cases digitized print photographs, depending on availability), scanned film envelopes with camera metadata, records of repeat photography sheets, and all field notes and/or camera notes associated with this stake. All attachments follow the following naming convention: stake_date_material_type_Kanab. Some stakes will have multiple materials from one repeat date...
Types: Citation;
Tags: Albion camera,
Colorado River,
Dallmeyer lenses,
Kanab Creek,
Southwestern United States,
This metadata record describes the materials contained in stake folder 2595. Stake 2595 is located at latitude 36.392, longitude -112.629. This location was photographed in the following years: 1942 and 1993. The materials associated with this item include original best quality images from each repeat date (preserved as digitized film images or in some cases digitized print photographs, depending on availability), scanned film envelopes with camera metadata, records of repeat photography sheets, and all field notes and/or camera notes associated with this stake. All attachments follow the following naming convention: stake_date_material_type_Kanab. Some stakes will have multiple materials from one repeat date (e.g.,...
Types: Citation;
Tags: Albion camera,
Colorado River,
Dallmeyer lenses,
Kanab Creek,
Southwestern United States,
This metadata record describes the materials contained in stake folder 1506. Stake 1506 is located at latitude 36.38585, longitude -112.63963. This location was photographed in the following years: 1909 (no physical image) and 1990. The materials associated with this item include original best quality images from each repeat date (preserved as digitized film images or in some cases digitized print photographs, depending on availability), scanned film envelopes with camera metadata, records of repeat photography sheets, and all field notes and/or camera notes associated with this stake. All attachments follow the following naming convention: stake_date_material_type_Kanab. Some stakes will have multiple materials...
Types: Citation;
Tags: Albion camera,
Colorado River,
Dallmeyer lenses,
Kanab Creek,
Southwestern United States,
Categories: Publication;
Types: Citation;
Tags: Crotalus,
D 04670 Reptiles,
Ecology Abstracts,
Thamnophis,
USA, Southwest,
Categories: Publication;
Types: Citation;
Tags: Entomology Abstracts; Ecology Abstracts,
Formicidae,
Hymenoptera,
Pheidole xerophila,
Pogonomyrmex desertorum,
Categories: Publication;
Types: Citation;
Tags: D 04130 Arid zones,
Ecology Abstracts,
USA, Nevada,
deserts,
landscape,
Categories: Publication;
Types: Citation;
Tags: Aves,
Citrullus lanatus,
D 04671 Birds; D 04672 Mammals,
Ecology Abstracts,
Mammalia,
Categories: Publication;
Types: Citation;
Tags: D 04700 Management; D 04130 Arid zones,
Ecology Abstracts,
Rodentia,
USA, California,
deserts,
Categories: Publication;
Types: Citation;
Tags: P 0000 AIR POLLUTION,
Pollution Abstracts,
USA, Arizona, Meadview,
aerosols,
air sampling,
Categories: Publication;
Types: Citation;
Tags: D 04705 Conservation; G 07270 Ecological genetics,
Diceros bicornis,
Ecology Abstracts; Genetics Abstracts,
Namibia,
conservation,
Categories: Publication;
Types: Citation;
Tags: D 04803 Pollution effects; P 5000 LAND POLLUTION,
Ecology Abstracts; Pollution Abstracts,
Egypt,
Egypt, Arab Rep.,
Pollution effects,
Categories: Publication;
Types: Citation;
Tags: Deserts,
Grasses,
Runoff,
SW 0870 Erosion and sedimentation,
Soil Erosion,
|
![]() |