Abstract：
:The concept of trade-offs between reproduction and other fitness traits is a fundamental principle of life history theory. For many plant species, the cost of sexual reproduction affects vegetative growth in years of high seed production through the allocation of resources to reproduction at different hierarchical levels of canopy organization. We have examined these tradeoffs at the shoot and branch level in an endemic California oak, Quercus lobata, during a mast year. To determine whether acorn production caused a reduction in vegetative growth, we studied trees that were high and low acorn producers, respectively. We observed that in both low and high acorn producers, shoots without acorns located adjacent to reproductive shoots showed reduced vegetative growth but that reduced branch-level growth on acorn-bearing branches occurred only in low acorn producers. The availability of local resources, measured as previous year growth, was the main factor determining acorn biomass. These findings show that the costs of reproduction varied among hierarchical levels, suggesting some degree of physiological autonomy of shoots in terms of acorn production. Costs also differed among trees with different acorn crops, suggesting that trees with large acorn crops had more available resources to allocate for growth and acorn production and to compensate for immediate local costs of seed production. These findings provide new insight into the proximate mechanisms for mast-seeding as a reproductive strategy.
journal_name
Oecologiajournal_title
Oecologiaauthors
Sánchez-Humanes B,Sork VL,Espelta JMdoi
10.1007/s00442-010-1819-6subject
Has Abstractpub_date
2011-05-01 00:00:00pages
101-10issue
1eissn
0029-8549issn
1432-1939journal_volume
166pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract：:Increasing evidence has shown that nutrients and consumers interact to control primary productivity in natural systems, but how abiotic stress affects this interaction is unclear. Moreover, while herbivores can strongly impact zonation patterns in a variety of systems, there are few examples of this in salt marshes. W...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-009-1504-9
更新日期：2010-05-01 00:00:00
abstract：:In this study we examine the influence of temperature on growth, photosynthetic performance and acclimation of two submerged macrophyte species, Elodea canadensis L.C. Rich and Ranunculus aquatilis (L.) Wimmer. The plants were grown at 5, 10 and 15°C and a photon flux density of 300 μmol m-2 s-1 (PAR) in a medium with...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s004420050165
更新日期：1997-04-01 00:00:00
abstract：:Transplants of white clover (Trifolium repens L.) were grown isolated from each other and in pairs placed at different distances apart. The paired plants developed asymmetrically and at the interface between paired clones both the density of nodes and of stolons appeared to reach ceiling values that were of the same o...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00377157
更新日期：1989-02-01 00:00:00
abstract：:Holling's (1992) proposition that discontinuities in biotic and abiotic processes generate structure in ecological systems is examined experimentally by imposing size-specific perturbations on marine sediment assemblages. Two kinds of perturbations were applied: organic enrichment and predation, each at two levels. Pe...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s004420050045
更新日期：2000-02-01 00:00:00
abstract：:Plant species and growth forms differ widely in litter chemistry, which affects decay and may have important consequences for plant growth via e.g. the release of nutrients and growth-inhibitory compounds. We investigated the overall short-term (9.5 months) and medium-term (21.5 months) feedback effects of leaf litter...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-006-0580-3
更新日期：2007-03-01 00:00:00
abstract：:Stable carbon isotope techniques were employed to study the food habits of the termite Macrotermes michaelseni (Isoptera: Termitidae) in a semiarid savanna habitat in Kenya. At Kajiado this species utilized approximately 70% herbaceous vegetation (mostly grass) and 30% woody vegetation, while at Ruiru approximately 64...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00388065
更新日期：1983-08-01 00:00:00
abstract：:Indirect interactions among plant species mediated by frugivorous animals can be central to population and community dynamics, since the successful seed dispersal of species may depend on facilitative or competitive interactions with heterospecific plants. Yet, empirical evidence on these interactions is very scarce a...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-019-04434-9
更新日期：2019-07-01 00:00:00
abstract：:The photosynthetic responses of a range of trebouxioid lichens were investigated to determine whether variations in net assimilation rates shown by populations of the same species collected from different habitats could be correlated with adjustments in carbon-concentrating mechanism (CCM) activity. The activity of a ...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s004420050387
更新日期：1998-01-01 00:00:00
abstract：:Spatial variation in biotic interactions and natural selection are fundamental parts of natural systems, and can be driven by differences in both trait distributions and the local environmental context of the interaction. Most studies of plant-animal interactions have been performed only in natural settings, making it...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-013-2831-4
更新日期：2014-04-01 00:00:00
abstract：:We examined the effect of native large herbivores on aboveground primary production of nonforested habitat in Yellowstone National Park, Wyoming. Productivity of vegetation grazed by elk (Cervus elaphus) and bison (Bison bison) was compared with that of ungrazed (permanently fenced) vegetation at four sites. Two metho...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00317727
更新日期：1993-11-01 00:00:00
abstract：:The phenomenon of overyielding in species-diverse plant communities is mainly attributed to complementary resource use. Vertical niche differentiation belowground might be one potential mechanism for such complementarity. However, most studies that have analysed the diversity/productivity relationship and belowground ...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-012-2259-2
更新日期：2012-08-01 00:00:00
abstract：:Isoprene emission from plants represents one of the principal biospheric controls over the oxidative capacity of the continental troposphere. In the study reported here, the seasonal pattern of isoprene emission, and its underlying determinants, were studied for aspen trees growing in the Rocky Mountains of Colorado. ...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00627738
更新日期：1994-09-01 00:00:00
abstract：:Habitat fragmentation modifies ecological patterns and processes through changes in species richness and abundance. In the coastal Maulino forest, central Chile, both species richness and abundance of insectivorous birds increases in forest fragments compared to continuous forest. Through a field experiment, we examin...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-005-0338-3
更新日期：2006-05-01 00:00:00
abstract：:If the natural enemy component of biological control is functional in small mammals, then the introduciton of weasels should effectively reduce populations of deer mice and Oregon voles. Seven weasels introduced to an area of forest habitat in coastal British Columbia did not appreciably lower the abundance of mice or...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00541787
更新日期：1980-01-01 00:00:00
abstract：:This paper catalogues several different dichotomies that have all been termed r- and K-selection. The status of the concept of r- and K-selection is discussed and a more restricted usage of the terms is recommended. ...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00347974
更新日期：1981-03-01 00:00:00
abstract：:Although many studies now examine how multiple factors influence the dynamics of herbivore populations, few studies explicitly attempt to document where and when each is important and how they vary and interact. In fact, how temporal variation in top-down (natural enemies) and bottom-up (host plant resources) factors ...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-002-1137-8
更新日期：2003-03-01 00:00:00
abstract：:The legume foodplants of Colias butterflies possess specific chemical components which stimulate oviposition in females of the genus. Different legumes provide different degrees of stimulation, as demonstrated by close correlation between field observations and laboratory experiments with a new behavioral assay. Sever...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00345999
更新日期：1979-01-01 00:00:00
abstract：:Interspecific interactions can vary within and among populations and geographic locations. This variation can subsequently influence the evolution and coevolution of species interactions. We investigated population and geographic variation in traits important to pollinating seed-consuming interactions between the seni...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s004420050945
更新日期：1999-11-01 00:00:00
abstract：:Invasive generalist ectoparasites provide a tool to study factors affecting expansion rates. An increase in the number of host species may facilitate geographic range expansion by increasing the number of suitable habitats and by affecting local extinction and colonization rates. A geographic perspective on parasite h...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-011-1951-y
更新日期：2011-08-01 00:00:00
abstract：:Not all hosts, communities or environments are equally hospitable for parasites. Direct and indirect interactions between parasites and their predators, competitors and the environment can influence variability in host exposure, susceptibility and subsequent infection, and these influences may vary across spatial scal...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-016-3744-9
更新日期：2017-01-01 00:00:00
abstract：:The principal function of isoprene biosynthesis in plants remains unclear, but emission rates are positively correlated with temperature and light, supporting a role for isoprene in maintaining photosynthesis under transient heat and light stress from sunflecks. Isoprene production is also inversely correlated with CO...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-011-1947-7
更新日期：2011-05-01 00:00:00
abstract：:It is illustrated theoretically that in a heterogeneous habitat the dispersal of individuals, even when it is random and density-independent, may have a pronounced effect of raising the average reproductive rate of the whole population, in addition to the effect of stabilization in the usual sense of reducing its vari...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00376909
更新日期：1981-05-01 00:00:00
abstract：:Contamination in marine foodwebs is nowadays of great environmental concern owing to the increasing levels of pollution in marine ecosystems from different anthropogenic sources. Seabirds can be used as indicators of regional contaminant patterns across large temporal and spatial scales. We analysed Hg, Se and Pb leve...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-008-1215-7
更新日期：2009-03-01 00:00:00
abstract：:Prey-selection behaviour of the phytoseiid mite Typhlodromus pyri Scheuten was analysed with a Markovtype model of feeding-state dynamics and feeding-state dependent searching behaviour (Sabelis 1981, 1986, 1989; Metz and Van Batenburg 1985a, b). All behavioural characteristics of the predator which are independent of...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00377075
更新日期：1989-11-01 00:00:00
abstract：:The optimal strategy in the design of nature reserves is investigated by means of the theory of island biogeography. Some previous results are revised. A new form of the incidence functions is presented. Their merit is that they do not ignore the minimum area requirements, they are more flexible, and in a number of in...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00388085
更新日期：1983-08-01 00:00:00
abstract：:Individual species can have profound effects on ecological communities, but, in hyperdiverse systems, it can be challenging to determine the underlying ecological mechanisms. Simplifying species' responses by trophic level or functional group may be useful, but characterizing the trait structure of communities may be ...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-020-04616-w
更新日期：2020-04-01 00:00:00
abstract：:Nutrient availability and herbivory can regulate primary production in ecosystems, but little is known about how, or whether, they may interact with one another. Here, we investigate how nitrogen availability and insect herbivory interact to alter aboveground and belowground plant community biomass in an old-field eco...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-011-2028-7
更新日期：2011-11-01 00:00:00
abstract：:Fine root extractions from soil cores of a south facing slope in the Southern Californian chaparral were used to study the dynamics of feeder root growth in a summer-dry area. The studies were concentrated on the root systems of Adenostoma fasciculatum, Arctostaphylos glauca, Ceanothus greggii, and Rhus ovata. The tot...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00344991
更新日期：1978-01-01 00:00:00
abstract：:We examined how different exploratory behavioral types of largemouth bass responded to differing prey communities by determining effects on growth, survival and diet in experimental ponds. We found evidence that non-explorer largemouth bass target young-of-year bluegill early on in life, but bluegill were not an impor...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-016-3681-7
更新日期：2016-10-01 00:00:00
abstract：:Urbanization is a major challenge for biodiversity conservation, yet the evolutionary processes taking place in urbanized areas remain poorly known. Human activities in cities set new selective forces in motion which need to be investigated to predict the evolutionary responses of animal species living in urban areas....
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-013-2663-2
更新日期：2013-11-01 00:00:00
