Semi-arid environments : agriculture, water supply, and vegetation / Kara M. Degenovine, editor.

Includes bibliographical references and index.

Print version record.

SEMI-ARID ENVIRONMENTS: AGRICULTURE, WATER SUPPLY AND VEGETATION ; SEMI-ARID ENVIRONMENTS: AGRICULTURE, WATER SUPPLY AND VEGETATION ; CONTENTS ; PREFACE ; THE SEMI-ARID ENVIRONMENT OF THE EL MELAH LAGOON (NE TUNISIA) -- CLOSING EVOLUTION TO A FUTURE SABKHA ; ABSTRACT ; 1. INTRODUCTION ; 2. THE EL MELAH LAGOON AREA; 3. ENVIRONMENTAL ZONES OF THE EL MELAH LAGOON AREA ; Waters and Nutrients ; Sediments ; Ecology ; Zonation of the Lagoon: The Environmental Scenario (2003) ; 4. PAST, PRESENT AND FUTURE OF THE EL MELAH LAGOON ; 5. SEDIMENTS.

Grain Size Distribution, Trace Elements Contents and Enrichment Factors Statistical Analysis ; 6. SOILS ; Mineralogical Composition of the Soils -- Whole Sample and <2 æm Fraction ; Core and Oued El Bey Sediment- Mineralogical Composition and Micro-paleontology; Mössbauer Spectrometry ; Chemical Composition of Soils ; Trace and Major Elements Distribution in Soils -- In-Depth Variation (S/D) ; Rare Earth Elements Patterns of Soils; Trace, Minor and Major Elements Distribution in the Core and the Oued El Bey ; REE Patterns of the Core and the Oued El Bey.

Compositional Variability in Surface Samples of the El Melah Lagoon Area 7. CONCLUSION ; ACKNOWLEDGMENTS ; REFERENCES ; LIMITING FACTORS AND STRATEGIES FOR IMPROVING REPRODUCTIVE OUTPUTS OF SMALL RUMINANTS REARED IN SEMI-ARID ENVIRONMENTS ; ABSTRACT; INTRODUCTION; BREED DIVERSITY AND FEATURES OF PRODUCTION SYSTEMS AND MANAGEMENT; MODULATION OF REPRODUCTIVE ACTIVITY BY ENVIRONMENTAL FACTORS ; ROLE OF THERMOPERIOD IN MODULATING REPRODUCTIVE FUNCTION; ROLE OF PHOTOPERIOD IN MODULATING REPRODUCTIVE FUNCTION; MANAGEMENT OF PHOTOPERIOD AND SEASONALITY BY THE "MALE EFFECT."

NUTRITION AS MAIN FACTOR MODULATING PRODUCTIVE YIELDS ROLE OF NUTRITION IN MODULATING REPRODUCTIVE FUNCTION; IMPROVEMENT OF REPRODUCTIVE FEATURES BY FOCUS-FEEDING; CONCLUSION ; REFERENCES ; CROP RESIDUE CONTRIBUTION TO N FERTILIZATION UNDER LONG TERM NO-TILL SYSTEMS IN THE CENTRAL SEMI-ARID REGION OF ARGENTINA ; ABSTRACT ; INTRODUCTION ; MATERIALS AND METHODS ; RESULTS ; Total Residue Biomass and Fractions Biomass; Residue Total and Soluble N; Soil Nitrate Content ; N2 Fixation Parameters ; CONCLUSION ; Residue Biomass Dynamics; Residue N Dynamics ; Soil Nitrate Dynamics.

Biological N2 Fixation in Crop Residues REFERENCES; CYANOBACTERIAL SOIL CRUSTS: ANALYSING RESILIENCE IN KALAHARI SAND SOILS ; ABSTRACT; 1. DRYLAND ECOSYSTEMS ; 2. THE KALAHARI ENVIRONMENT ; 3. BIOLOGICAL SOIL CRUSTS IN THE KALAHARI ; 4. BIOLOGICAL SOIL CRUSTS AND NUTRIENT CYCLING ; 5. BIOLOGICAL SOIL CRUSTS AND SOIL MOISTURE DYNAMICS ; 6. IMPLICATIONS OF DESERTIFICATION AND FUTURE CLIMATE CHANGE IN KALAHARI SAND SOILS ; 7. CONCLUSIONS ; REFERENCES ; SEMI-ARID VEGETATION IN BRAZIL: BIODIVERSITY, IMPACTS AND MANAGEMENT ; ABSTRACT; INTRODUCTION ; NATURAL VEGETATIONAL TYPES IN THE NR OF BRAZIL.

eBooks on EBSCOhost EBSCO eBook Subscription Academic Collection - Worldwide