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Subjects population density Remove constraint population density: population density
Displaying items 1 - 10 of 843 start over

1. 2008 Sunflower Insect Trap Monitoring Network

Author:
Knodel, Janet J. , Charlet, Laurence D. , Sunflower Research Workshop.
Subject:
Helianthus annuus , Homoeosoma electellum , Cochylis hospes , insect pests , pest identification , pest monitoring , networks , trapping , pheromone traps , population density , Great Plains region , Midwestern United States , Texas , Manitoba
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2009

2. A comparison of sticky traps for monitoring Asian citrus psyllid (Diaphorina citri Kuwayama)

Description:
Includes references
Author:
Hall, David G. , Sétamou, Mamoudou , Mizell, Russell F.
Subject:
Diaphorina citri , insect pests , pest monitoring , color , sticky traps , insect behavior , adhesives , equipment design , product quality , reflectance , seasonal variation , population density , adult insects , Florida , Texas
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2010

3. A landscape view of cereal aphid parasitoid dynamics reveals sensitivity to farm- and region-scale vegetation structure

Description:
Includes references
Author:
Brewer, Michael J. , Noma, Takuji , Elliott, Norman C. , Kravchenko, Alexandra N. , Hild, Ann L.
Subject:
Diuraphis noxia , parasitoids , Aphelinus , Lysiphlebus testaceipes , population dynamics , population density , landscape ecology , vegetation structure , Triticum aestivum , winter wheat , Helianthus annuus , crop rotation , grasslands , seasonal variation , Great Plains region
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

4. A note on the densities of Ixodes scapularis (Acari: Ixodidae) and white-tailed deer on the campus of the National Institute of Standards and Technology, Maryland, USA

Description:
Includes references
Author:
Carroll, J.F. , Cyr, T.L.
Subject:
Ixodes scapularis , Odocoileus virginianus , population density , deer , ticks , host-parasite relationships , disease vectors , Lyme disease , Borrelia burgdorferi , Maryland
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2005

5. A novel approach for assessing density and range-wide abundance of prairie dogs

Description:
Includes references
Author:
Facka, Aaron N. , Ford, Paulette L. , Roemer, Gary W.
Subject:
Cynomys ludovicianus , population density , estimation , methodology , animal communities , geographical variation , environmental factors , mark-recapture studies , species reintroduction , keystone species , endangered species , New Mexico
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2008

6. A pheromone-baited trap for monitoring the indian meal moth, Plodia interpunctella (Hubner)(Lepidoptera: Pyralidae)

Description:
Includes references
Author:
Mullen, M.A. , Dowdy, A.K.
Subject:
Plodia interpunctella , pheromone traps , detection , monitoring , population density , storage pests
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2001

7. A reappraisal of the evidence for regulation of wolf populations

Description:
Includes references
Author:
Cariappa, C.A. , Oakleaf, John K. , Ballard, Warren B. , Breck, Stewart W.
Subject:
Canis lupus , predators , wolves , population density , ungulates , predator-prey relationships , regression analysis , biomass , animal ecology , wildlife management , population dynamics , linear models , North America
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2011

8. A reciprocal transplant experiment within a climatic gradient in a semiarid shrub-steppe ecosystem: effects on bunchgrass growth and reproduction, soil carbon, and soil nitrogen

Description:
Includes references
Author:
Link, Steven O. , Smith, Jeffrey L. , Halvorson, Jonathan J. , Bolton, Harvey Jr.
Subject:
Poa secunda , grasses , climate change , global warming , plant growth , environmental factors , population density , plant density , altitude , shoots , leaves , stems , grasslands , shrublands , vegetation cover , soil , carbon , nitrogen , edaphic factors , population ecology , semiarid zones , temperature , Washington
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2003

9. A review of marking techniques in arthropods and an introduction to elemental marking

Description:
In the series analytic: Use of elemental markers in the study of arthropod movement and trophic interations / edited by D.H. Akey, J.L. Hayes, and S.W. Fleischer.
Author:
Akey, D.H.
Subject:
animal identification , arthropods , dyes , hosts , longevity , parasites , population density , radionuclides , species dispersal
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
1991

10. A sampling method to assess lotic crayfish communities

Description:
Includes references
Author:
DiStefano, R.J. , Gale, C.M. , Wagner, B.A. , Zweifel, R.D.
Subject:
crayfish , rivers , streams , sampling , population density , spatial variation , microhabitats , temporal variation , research methods , lotic systems , Missouri
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Year:
2003