Abstract:
:The chaparral shrub Eriodictyon californicum produces a flavonoid leaf resin with a chemically similar composition to that previously reported for the sympatric shrub Diplacus aurantiacus. We determined the phenology, resin content, and nitrogen content of Eriodictyon leaves and the leaf area lost to herbivores. Nitrogen content and resin content were both negatively correlated with leaf age at each sampling date, but nitrogen decreased during the growing season while resin increased. The fraction of leaf area lost during the growing season averaged less than 7% and was highest on the oldest leaves. The seasonal pattern of resin production in Eriodictyon corresponds to that in Diplacus, indicating that the similar environments of Eriodyctyon and Diplacus have led to convergent leaf resins. This convergence in these two plants has implications for chemicals of similar function in other chaparral shrubs.
journal_name
Oecologiajournal_title
Oecologiaauthors
Johnson ND,Chu CC,Ehrlich PR,Mooney HAdoi
10.1007/BF00379642subject
Has Abstractpub_date
1984-03-01 00:00:00pages
398-402issue
3eissn
0029-8549issn
1432-1939pii
10.1007/BF00379642journal_volume
61pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract::Many tropical regions show one distinct dry season. Often, this seasonality induces cambial dormancy of trees, particularly if these belong to deciduous species. This will often lead to the formation of annual rings. The aim of this study was to determine whether tree species in the Bolivian Amazon region form annual ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-005-0160-y
更新日期:2005-11-01 00:00:00
abstract::The population dynamics of Antarctic seabirds are influenced by variations in winter sea ice extent and persistence; however, the type of relationship differs according to the region and the demographic parameter considered. We used annual presence/absence data obtained from 1,138 individually marked birds to study th...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-009-1387-9
更新日期:2009-08-01 00:00:00
abstract::Ecologists have long debated the role of predation in mediating the coexistence of prey species. Theory has mainly taken a bitrophic perspective that excludes the effects of inducible defenses at different trophic levels. However, inducible defenses could either limit or enhance the effects of predation on coexistence...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-008-1111-1
更新日期:2008-10-01 00:00:00
abstract::Numerous mechanisms are proposed to explain why exotic plants successfully invade natural communities. However, the positive effects of native engineers on exotic plant species have received less consideration. We tested whether the nutrient-rich soil patches created by a native ecological engineer (refuse dumps from ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1589-1
更新日期:2010-05-01 00:00:00
abstract::Predicted changes in soil water availability regimes with climate and land-use change will impact the community of functionally important soil organisms, such as macro-detritivores. Identifying and quantifying the functional traits that underlie interspecific differences in desiccation resistance will enhance our abil...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2541-3
更新日期:2013-07-01 00:00:00
abstract::The ribulose-1,5-bis-phosphate (RBPC) 14CO2 fixation rate was measured at four different temperatures, 5°, 15°, 25° and 35° C, in three populations of Espeletia schultzii at different altitudes, 3100, 3550 and 4200 ma.s.l. The fixation rate increased with temperature increase in the populations studied. The population...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317283
更新日期:1995-02-01 00:00:00
abstract::For a symbiosis to be a mutualism, benefits received must exceed costs incurred for both partners. Partners can prevent costly overexploitation through behaviors that moderate interactions with the other symbiont. In a symbiosis between crayfish and branchiobdellidan annelids, the worms can increase crayfish survival ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-013-2780-y
更新日期:2014-02-01 00:00:00
abstract::The costs and benefits of resource integration in Hydrocotyle bonariensis were examined by comparing severed and intact clones grown across multiple resource gradients. Basipetal movement of water, nitrogen and photosynthates was demonstrated to occur between two rhizome branch systems interconnecting hundreds of rame...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317540
更新日期:1991-04-01 00:00:00
abstract::Prey subsidies originating from detritus add nutrients and energy to arboreal communities. Measurement of this subsidy is required in the understanding of how food web dynamics respond to changes in surrounding environments. Shrub spiders are one of the key predators involved in food web coupling. We evaluate the effe...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2446-1
更新日期:2013-04-01 00:00:00
abstract::Aboveground herbivory is well known to change plant growth and defence. In contrast, effects of soil organisms, acting alone or in concert, on allocation patterns are less well understood. We investigated separate and combined effects of the endogeic earthworm species Aporrectodea caliginosa and the root feeding nemat...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-009-1306-0
更新日期:2009-05-01 00:00:00
abstract::Sources of variation in floral nectar production were investigated in a natural population of Epilobium canum (Onagraceae), a hummingbird-pollinated herbaceous shrub. Field measurements showed significant phenotypic variation among plants in floral nectar production rates. Average variance among flowers within plants ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050185
更新日期:1997-05-01 00:00:00
abstract::Non-trophic interactions, driven by one species changing the behavior but not density of another species, appear to be as pervasive as those involving consumption. However, ecologists have only begun to explore non-trophic interactions in species-rich communities. We investigated interactions within a community includ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-009-1486-7
更新日期:2010-03-01 00:00:00
abstract::Atmospheric inputs of N and S in bulk deposition (open collectors) and throughfall (beneath canopy collectors) were measured in and adjacent to two Class 1 wilderness areas of the northeastern US. In general, atmospheric S inputs followed our expectations with throughfall S fluxes increasing with elevation in the Whit...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-014-3121-5
更新日期:2015-01-01 00:00:00
abstract::The extent, frequency and causes of pollenlimited seed production were examined in partially selffertile populations of Blandfordia grandiflora for 2 years. Percentage seed set of open-pollinated plants (50-57%) did not differ within or between years, and was about 19% less than experimentally cross-pollinated plants ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00328430
更新日期:1995-07-01 00:00:00
abstract::The outflying and homeflying activity pattern of a colony of the Indian pygmy bat Pipistrellus mimus occupying a tunnel was studied under natural conditions. Before leaving the tunnel for foraging, the bats made circling flights outside to sample the environmental light conditions. The onset and end of activity was re...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317515
更新日期:1993-12-01 00:00:00
abstract::Although florivores can destroy significant amounts of sexual tissues and indirectly affect pollination, little is known about their preferences, which could shape the evolution of floral traits or defense. In this study, we used a gynodioecious plant Nemophila menziesii, and its main florivore Platyprepia virginalis,...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2278-z
更新日期:2012-09-01 00:00:00
abstract::In altricial mammals and birds, the presence of a large number of litter or brood mates often affects the development of individual offspring by reducing the share of resources provided by the parents. However, sibling presence can also be favourable, conferring thermoregulatory benefits when ambient temperatures are ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-008-0958-5
更新日期:2008-04-01 00:00:00
abstract::Differences in the density of conspecific tree individuals in response to environmental gradients are well documented for many tree species, but how such density differences are generated and maintained is poorly understood. We examined the segregation of six dipterocarp species among three soil types in the Pasoh tro...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2529-z
更新日期:2013-07-01 00:00:00
abstract::In the laboratory the consumption (C), egestion (F), assimilation (A) and assimilation efficiency (A/C) of dry matter and of the bioelements C, N, P, K, Ca, Mg, S and Na were studied weekly during the whole feeding stage. The larvae were reared in clusters of 10 individuals (on average 3.5 ♂♂ and 6.5 ♀♀), fed one-year...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00344768
更新日期:1979-11-01 00:00:00
abstract::Theoretical predictions from a simulation model of insect distributions and dispersal among isolated food plants have been tested with data gathered from 13 Cinnabar moth populations. Agreement with the predictions was good. Egg batch size was equal to or slightly larger than the number which could be supported by the...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00545484
更新日期:1976-03-01 00:00:00
abstract::The similarity in species composition between two communities generally decays as a function of increasing distance between them. Parasite communities in vertebrate definitive hosts follow this pattern but the respective relationship in intermediate invertebrate hosts of parasites with complex life cycles is unknown. ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-009-1276-2
更新日期:2009-05-01 00:00:00
abstract::In this study we tested the hypothesis that the presence of chemical stimuli from a hungry predator would initiate anti-predator responses, while stimuli from a satiated predator would not. We used chemical stimuli released from starved perch (Perca fluviatilis) and from satiated perch (predator). As prey we used adul...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050221
更新日期:1997-07-01 00:00:00
abstract::Locomotory efficiency and potential has been studied in three species of the waterboatman Notonecta in relation to the predation strategies of these bugs.Morphometric analysis, estimating likely relative drag forces, mechanical advantages of the swimming legs and leg length/body length ratios allowed an estimation of ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00363849
更新日期:1982-02-01 00:00:00
abstract::In the simultaneously hermaphroditic marine fish, Serranus subligarius, male role individuals are known to pair spawn, group spawn and streak spawn. While the effects of these common mating tactics on mating success in the male role have been well studied, their consequences for the reproductive success of the individ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2307-y
更新日期:2012-10-01 00:00:00
abstract::The effects of bannertail kangaroo rat (Dipodomys spectabilis) mounds and associated soil-surface disturbance on plant species composition and diversity in the Chihuahuan Desert were examined with multivariate analysis. Kangaroo rat mounds created disturbance gaps and contributed to local species diversity by creating...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00328605
更新日期:1996-04-01 00:00:00
abstract::As the Arctic warms, tundra vegetation is becoming taller and more structurally complex, as tall deciduous shrubs become increasingly dominant. Emerging studies reveal that shrubs exhibit photosynthetic resource partitioning, akin to forests, that may need accounting for in the "big leaf" net ecosystem exchange models...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-016-3646-x
更新日期:2016-09-01 00:00:00
abstract::Mechanical aspects of predation by the shore crab, Carcinus maenas, on the edible mussel, Mytilus edulis, were examined. The shore crabs from the population studied utilized five distinct, largely size-related, mussel-opening techniques. Crushing the mussel umbone appeared the most successful opening method for medium...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00348059
更新日期:1978-01-01 00:00:00
abstract::The degree of CAM-cycling was examined in plants from 23 populations representing five morphologically similar species of Talinum to determine how CAM-cycling correlates with site aridity and drought stress. In the field, CAM-cycling, as indicated by the amount of malic acid accumulated in plant tissues overnight, and...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00318325
更新日期:1991-05-01 00:00:00
abstract::The supply of recruits plays an important role in plant and animal population dynamics, and may be governed by environmental and behavioral constraints on animals. Mated females of the mayfly genus Baetis alight on rocks protruding from streams, crawl under water and deposit a single egg mass under a rock. We surveyed...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420000446
更新日期:2000-10-01 00:00:00
abstract::Plants often recruit frugivorous animals to transport their seeds; however, gut passage can have varying effects on plant fitness depending on the physical and chemical treatment of the seed, the distance seeds are transported, and the specific site of deposition. One way in which plants can mediate the effects of gut...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-014-3096-2
更新日期:2015-02-01 00:00:00