Search Results - (Author, Cooperation:R. J. Marquis)
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1Latest Papers from Table of Contents or Articles in PressJ. A. Estes ; J. Terborgh ; J. S. Brashares ; M. E. Power ; J. Berger ; W. J. Bond ; S. R. Carpenter ; T. E. Essington ; R. D. Holt ; J. B. Jackson ; R. J. Marquis ; L. Oksanen ; T. Oksanen ; R. T. Paine ; E. K. Pikitch ; W. J. Ripple ; S. A. Sandin ; M. Scheffer ; T. W. Schoener ; J. B. Shurin ; A. R. Sinclair ; M. E. Soule ; R. Virtanen ; D. A. Wardle
American Association for the Advancement of Science (AAAS)
Published 2011Staff ViewPublication Date: 2011-07-19Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Biodiversity ; *Ecosystem ; *Extinction, Biological ; Feeding Behavior ; *Food Chain ; Humans ; Introduced Species ; Population Dynamics ; Predatory BehaviorPublished by: -
2Articles: DFG German National LicensesSinger, M. S. ; Lill, J. T. ; Stireman, J. O. ; Gentry, G. L. ; Marquis, R. J. ; Ricklefs, R. E. ; Greeney, H. F. ; Wagner, D. L. ; Morais, H. C. ; Diniz, I. R. ; Kursar, T. A. ; Coley, P. D. ; Dyer, L. A.
[s.l.] : Nature Publishing Group
Published 2007Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] For numerous taxa, species richness is much higher in tropical than in temperate zone habitats. A major challenge in community ecology and evolutionary biogeography is to reveal the mechanisms underlying these differences. For herbivorous insects, one such mechanism leading to an increased ...Type of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Patterns of association between herbivores and host plants have been thought to reflect the quality of plants as food resources as influenced by plant nutrient composition, defences, and phenology. Host-plant-specific enemies, that is, ...Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1432-1939Keywords: Key words Allocation cost ; Asclepias syriaca ; Compensation ; Herbivory ; Resource allocation patternsSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract To investigate the potential for and constraints on the evolution of compensatory ability, we performed a greenhouse experiment using Asclepias syriaca in which foliar damage and soil nutrient concentration were manipulated. Under low nutrient conditions, significant genetic variation was detected for allocation patterns and for compensatory ability. Furthermore, resource allocation to storage was positively, genetically correlated both with compensatory ability and biomass when damaged, the last two being positively, genetically correlated with each other. Thus, in the low nutrient environment, compensatory ability via resource allocation to storage provided greater biomass when damaged. A negative genetic correlation between compensatory ability and plant biomass when undamaged suggests that this mechanism entailed an allocation cost, which would constrain the evolution of greater compensatory ability when nutrients are limited. Under high nutrient conditions, neither compensatory ability nor allocation patterns predicted biomass when damaged, even though genetic variation in compensatory ability existed. Instead, plant biomass when undamaged predicted biomass when damaged. The differences in outcomes between the two nutrient treatments highlight the importance of considering the possible range of environmental conditions that a genotype may experience. Furthermore, traits that conferred compensatory ability did not necessarily contribute to biomass when damaged, demonstrating that it is critical to examine both compensatory ability and biomass when damaged to determine whether selection by herbivores can favor the evolution of increased compensation.Type of Medium: Electronic ResourceURL: