Keyphrases
Mexico
100%
Tree Rings
100%
Hydroclimatic Variability
100%
Chihuahua
100%
Drought
80%
Northern Mexico
80%
Durango
60%
Ring Width
60%
Earlywood
60%
New Mexico
40%
Douglas-fir
40%
Dry Year
40%
Southwestern USA
40%
Spring Precipitation
40%
Prolonged Drought
40%
Ring Width Index
40%
Sierra Madre Occidental
40%
Winter-spring
40%
Precipitation Reconstruction
40%
Famine
40%
Arizona
20%
Rural Areas
20%
Wildlife Species
20%
Pseudotsuga Menziesii
20%
Extreme Drought
20%
Moisture
20%
Historical Trees
20%
Increment Cores
20%
Precipitation Data
20%
Central Mexico
20%
Migrant Farmworkers
20%
Age Differences
20%
Mixed-conifer Forest
20%
Natural Protected Areas
20%
Fir Tree
20%
Chainsaw
20%
Tree Growth
20%
Climate Variability
20%
Southwestern Region
20%
Negative Relationships
20%
Endangered Species
20%
Food Production
20%
Average Precipitation
20%
Southern Oscillation Index
20%
Temperature Data
20%
Climatic Response
20%
Rain
20%
Tree-ring Series
20%
Neotropical Birds
20%
Water Holding Capacity
20%
Nesting Habitat
20%
Tree-ring Chronologies
20%
Water Restriction
20%
Climate-sensitive
20%
Cool Season
20%
Latewood
20%
Summer Months
20%
Extreme Climatic Events
20%
Historical Documents
20%
Soil Infiltration
20%
Thick-billed Parrot
20%
Historical Drought
20%
Power Spectral Analysis
20%
Increment Borer
20%
Livestock Mortality
20%
Bracero
20%
Stem Size
20%
Economical Crisis
20%
Straight Line
20%
Multi-annual
20%
Climate Dynamics
20%
Moisture Condition
20%
Western Slope
20%
Standardization Methods
20%
Rhynchopsitta Pachyrhyncha
20%
Infiltration Water
20%
ENSO Influence
20%
Agricultural and Biological Sciences
Palmer Drought Severity Index
100%
Earlywood
100%
Spring
66%
Fir
66%
Grains
66%
Annuals
33%
Pseudotsuga menziesii
33%
Wildlife Species
33%
Farm Animal
33%
Tree Growth
33%
Watersheds
33%
Protected areas
33%
Water Resources
33%
Water Holding Capacity
33%
Latewood
33%
Parrot
33%
Infiltration Rate
33%
Rhynchopsitta pachyrhyncha
33%
Spectral Analysis
33%
Rural Areas
33%
Earth and Planetary Sciences
Mexico
100%
United States of America
100%
Tree rings
100%
El Nino-Southern Oscillation
80%
New Mexico
40%
Tree Ring
40%
Arizona
20%
Protected Natural Area
20%
Atmospherics
20%
Water Resource
20%
Climate Variation
20%
Southern Oscillation
20%
Food Production
20%
Rural Area
20%
Spectrum Analysis
20%
Climate Dynamics
20%
Agricultural Worker
20%