Differentiation and adaptation in Brassica nigra populations: interactions with related herbivores.

abstract：:A factorial design of clipping and compaction was used to study the responses of Schizachyrium scoparium and its mycorrhizal symbionts to these stresses. All treatment combinations significantly reduced the growth and biomass of plants relative to controls. Compaction significantly reduced tillering and crown expansio...

journal_title：Oecologia

authors： Wallace LL

更新日期：1987-06-01 00:00:00

abstract：:In arctic tundra soil, oxygen depletion associated with soil flooding may control plant growth either directly through anoxia or indirectly through effects on nutrient availability. This study was designed to evaluate whether plant growth and physiology of two arctic sedge species are more strongly controlled by the d...

journal_title：Oecologia

authors： Gebauer RL,Reynolds JF,Tenhunen JD

更新日期：1995-11-01 00:00:00

abstract：:Studies on the lizard, Anolis sagrei, revealed that after Hurricane Floyd devastated the Bahamas in 1999, some populations consisted only of hatchlings. Because the storm surge of the hurricane completely inundated these islands, apparently for up to 6 h, survival of anole eggs in salt water for such periods is implie...

journal_title：Oecologia

authors： Losos JB,Schoener TW,Spiller DA

更新日期：2003-11-01 00:00:00

abstract：:I suggest that between-community variations in diversity patterns during succession in plant communities are due to the effects of selection on life history strategies under different disturbance regimes. Natural disturbances to plant communities are simultaneously a source of mortality for some individuals and a sour...

journal_title：Oecologia

authors： Denslow JS

更新日期：1980-07-01 00:00:00

abstract：:The relative importance of allelopathy and resource competition in plant-plant interactions has been vigorously debated but seldom tested. We used activated carbon to manipulate the effects of root exudates of Centaurea maculosa, a noxious weed in much of western North America, on root elongation rates and growth of t...

journal_title：Oecologia

authors： Ridenour WM,Callaway RM

更新日期：2001-02-01 00:00:00

abstract：:Interactions among granivores and seeds depend on the foraging behaviour and morphology of the granivores and on the attributes and availability of seeds. We investigated seed selection by the seed harvesting ant Messor bouvieri in three adjacent plant communities in Spain by relating the harvested seeds to those in t...

journal_title：Oecologia

authors： Willott SJ,Compton SG,Incoll LD

更新日期：2000-10-01 00:00:00

abstract：:The survival time of small and isolated populations will often be relatively low, by which the survival of species living in such a way will depend on powers of dispersal sufficiently high to result in a rate of population foundings that about compensates the rate of population extinctions. The survival time of compos...

journal_title：Oecologia

authors： den Boer PJ

更新日期：1981-08-01 00:00:00

abstract：:Release from natural enemies is often cited as a key factor for understanding the success of invasive plant species in novel environments. However, with time invasive species will accumulate native enemies in their invaded range, with factors such as spread distance from the site of introduction, climate and leaf-leve...

journal_title：Oecologia

authors： Tabassum S,Leishman MR

更新日期：2018-02-01 00:00:00

abstract：:Resource supply and pollen delivery are often thought to equally limit seed production in animal-pollinated plants. At equilibrium, plants should show no response to experimental pollen supplementation because resources limit seed set above the current level of pollen attraction, while experimental reduction in pollen...

journal_title：Oecologia

authors： Ornelas JF,Lara C

更新日期：2009-07-01 00:00:00

abstract：:Although the selective loss of individuals susceptible to disease can favor the evolution of female preference for older males, the interrelationship between age, infection, longevity, and mating success remains poorly characterized in natural populations. In a longitudinal study of 61 male common yellowthroats (Geoth...

journal_title：Oecologia

authors： Freeman-Gallant CR,Taff CC

更新日期：2017-08-01 00:00:00

abstract：:Many native communities contain exotic plants that pose a major threat to indigenous vegetation and ecosystem functioning. Therefore the enemy release hypothesis (ERH) and biotic resistance hypothesis (BRH) were examined in relation to the invasiveness of the introduced dune grass Ammophila arenaria in South Africa. T...

journal_title：Oecologia

authors： Knevel IC,Lans T,Menting FB,Hertling UM,van der Putten WH

更新日期：2004-11-01 00:00:00

abstract：:The extent of the response of plant growth to atmospheric CO2 enrichment depends on the availability of resources other than CO2. An important growth-limiting resource under field conditions is nitrogen (N). N may, therefore, influence the CO2 response of plants. The effect of elevated CO2 (60 Pa) partial pressure (pC...

journal_title：Oecologia

authors： Zanetti S,Hartwig UA,van Kessel C,Lüscher A,Hebeisen T,Frehner M,Fischer BU,Hendrey GR,Blum H,Nösberger J

更新日期：1997-09-01 00:00:00

abstract：:Seasonal and nutritionally induced changes of whole body protein metabolism have been studied in 45 to 57 mm shell-length Mytilus edulis from Whitsand Bay, southwest England. The subtraction of measured net protein balances from coincident rates of protein synthesis, determined in vivo by supplying 15N-labelled alga a...

journal_title：Oecologia

authors： Hawkins AJ

更新日期：1985-04-01 00:00:00

abstract：:Predators attack and plants defend, so herbivores face the dilemma of how to eat enough without being eaten. But do differences in the personality of herbivores affect the foraging choices of individuals? We explored the ecological impact of personality in a generalist herbivore, the brushtail possum (Trichosurus vulp...

journal_title：Oecologia

authors： Mella VS,Ward AJ,Banks PB,McArthur C

更新日期：2015-01-01 00:00:00

abstract：:We determined the effects of defoliation by a graminivorous grasshopper on the foliage quality of the C3 plant, western wheatgrass (Pascopyrum smithii [Rydb] A. Love). Additionally, we determined the effects of this defoliation upon the subsequent feeding of the graminivorous grasshopper Phoetaliotes nebrascensis Thom...

journal_title：Oecologia

authors： Redak RA,Capinera JL

更新日期：1994-11-01 00:00:00

abstract：:Daily energy metabolism and water flux were measured with doubly labeled water in the free-living insectivorous lizards Cnemidophorus tigris (mean body mass 15.7 g) and Callisaurus draconoides (8.6 g) in June 1979 in the Colorado Desert of California. C. tigris was an active forager; it spent 91% of its 5-h daily acti...

journal_title：Oecologia

authors： Anderson RA,Karasov WH

更新日期：1981-05-01 00:00:00

abstract：:Herbivore-induced defences appear ubiquitous across most biomes and habitats. Yet the direct correlation between induced changes in host plant chemistry and the population dynamics of the herbivore remain untested in many systems. In plant-herbivore interactions in the terrestrial environment, indirect or tritrophic i...

journal_title：Oecologia

authors： Coleman RA,Ramchunder SJ,Davis KM,Moody AJ,Foggo A

更新日期：2007-03-01 00:00:00

abstract：:During five consecutive growing seasons (winters) ca. 110 plants of the desert geophyte Bellevalia desertorum were marked individually in a 25 m2 plot on a south-facing slope in the central Negev Desert of Israel. The number of rosette leaves of each plant was recorded, as well as whether it flowered and produced seed...

journal_title：Oecologia

authors： Boeken B

更新日期：1989-08-01 00:00:00

abstract：:Monk parakeets have been introduced into North America within the past 15 years and are apparently becoming established in several geographical regions. Several physiological responses of monk parakeets related to climatic tolerance were examined, and it is concluded that the species is equipped physiologically to occ...

journal_title：Oecologia

authors： Weathers WW,Caccamise DF

更新日期：1975-12-01 00:00:00

abstract：:It is important to understand the role that different predators can have to be able to predict how changes in the predator assemblage may affect the prey community and ecosystem attributes. We tested the effects of different stream predators on macroinvertebrates and ecosystem attributes, in terms of benthic algal bio...

journal_title：Oecologia

authors： Nilsson E,Olsson K,Persson A,Nyström P,Svensson G,Nilsson U

更新日期：2008-10-01 00:00:00

abstract：:In a tropical environment near the equator in Nairobi, Kenya, flesh fly development is nearly continuous throughout the year with only a few individuals being channeled into pupal diapause during the coldest months. Two species reared in a field cage completed 7 generations/year. Generation time for nondiapause flies ...

journal_title：Oecologia

authors： Denlinger DL

更新日期：1978-01-01 00:00:00

abstract：:We assessed the ecomorphological structure of a guild of rhinolophoid bats in a Malaysian rainforest first described by Heller and von Helversen (1989). These authors found that the distribution of echolocation call frequencies used by 12 syntopic species was more even than expected from allometric relationships or in...

journal_title：Oecologia

authors： Kingston T,Jones G,Zubaid A,Kunz TH

更新日期：2000-08-01 00:00:00

abstract：:In order to understand habitat selection, it is important to consider the way individual animals assess the suitability of a future reproductive site. One way of investigating mechanisms (such as those involved in nest site selection) is to examine breeding success and habitat characteristics in terms of animals retur...

journal_title：Oecologia

authors： Hoi H,Krištín A,Valera F,Hoi C

更新日期：2012-05-01 00:00:00

abstract：:The mycobiont of the high-light-susceptible forest lichen Lobaria pulmonaria was shown to deposit brown, melanic compounds in the outer layer of the upper cortex, depending on the long-term level of solar radiation in its natural habitat. Furthermore, pale thalli from a shady habitat produced melanic compounds after t...

journal_title：Oecologia

authors： Gauslaa Y,Solhaug KA

更新日期：2001-02-01 00:00:00

abstract：:The Egyptian Zygophyllum species, though limited in number, contribute in considerable measure to the desert vegetation. They represent a group of succulent plants which are drought resistant or salt tolerant living under severe dry climatic conditions. Their abundance is attributed to these characteristics in additio...

journal_title：Oecologia

authors： Batanouny KH,Ezzat NH

更新日期：1971-06-01 00:00:00

abstract：:As a preliminary to a population study using markrelease-recapture techniques, specimens of the Satyrid buttfly Melanargia galathea (L.) were subjected to a number of marking and capture techniques. Although the adults are thought to display both aposematic and cryptic coloration, the use of marks of different sizes a...

journal_title：Oecologia

authors： Morton AC

更新日期：1982-04-01 00:00:00

abstract：:Many organisms undergo ontogenetic niche shifts due to considerable changes in size during their development. These ontogenetic shifts can alter the trophic position of individuals, the type and strength of ecological interactions across species, and allow for cannibalism within species. In this study we ask if and ho...

journal_title：Oecologia

authors： Rudolf VH,Armstrong J

更新日期：2008-10-01 00:00:00

abstract：:Seasonal changes in the photosynthetic characteristics of intact involucral leaves of Anemone raddeana were investigated under laboratory conditions. Net photosynthesis and constant water vapor pressure deficit showed almost the same seasonal trend. They increased rapidly from mid-April immediately after unfolding of ...

journal_title：Oecologia

authors： Yoshie F,Yoshida S

更新日期：1987-05-01 00:00:00

abstract：:Conspecific attraction is the preferential settlement into habitat patches with conspecifics. To be a good proximate strategy, fitness gains from settling with conspecifics must outweigh the costs of higher conspecific densities, such as intraspecific competition. Two types of benefits have been proposed to explain co...

journal_title：Oecologia

authors： Donahue MJ

更新日期：2006-08-01 00:00:00

abstract：:The seasonal changes in plant community architecture and its importance to insect herbivores during the ruderal-early stages of an experimental secondary successional gradient are described. The dominant group of insect herbivores, the Auchenorrhyncha (Hemiptera: Homoptera) are considered together with their host plan...

journal_title：Oecologia

authors： Stinson CS,Brown VK

更新日期：1983-01-01 00:00:00