Abstract:
:Desert annuals of Death Valley, California have higher average light-saturated photosynthetic capacities and leaf nitrogen contents than do early-successional annuals of Illinois. The leaves of annuals in the light-unlimited Death Valley environment change little in specific weight, nitrogen, or photosynthetic capacity with age. In contrast, these properties decrease markedly with age in the leaves of the Illinois annuals even in leaves not exposed to the usual shading that accompanies canopy development. These results are interpreted in a carbon-gained-per-nitrogen-invested context.
journal_name
Oecologiajournal_title
Oecologiaauthors
Mooney HA,Field C,Gulmon SL,Bazzaz FAdoi
10.1007/BF00378802subject
Has Abstractpub_date
1981-08-01 00:00:00pages
109-112issue
1eissn
0029-8549issn
1432-1939pii
10.1007/BF00378802journal_volume
50pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract::Plants in the Mediterranean climate region of California typically experience summer drought conditions, but correlations between zones of frequent coastal fog inundation and certain species' distributions suggest that water inputs from fog may influence species composition in coastal habitats. We sampled the stable H...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-005-0152-y
更新日期:2005-10-01 00:00:00
abstract::This study quantified both the age- and sex-specific survival rates of juveniles and adults, and tested for interannual differences in age-specific survival rates of the southern elephant seal population at Marion Island. Pups were tagged on an annual basis from 1983 onwards at Marion Island, and a consistent recaptur...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050922
更新日期:1999-11-01 00:00:00
abstract::The enemies hypothesis states that reduced insect herbivory in mixed-species stands can be attributed to more effective top-down control by predators with increasing plant diversity. Although evidence for this mechanism exists for invertebrate predators, studies on avian predation are comparatively rare and have not e...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-015-3391-6
更新日期:2016-03-01 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::The sensible and latent heat losses of a maritime pine stand (Pinus pinaster Aiton) and of its understorey were measured in Portugal, in conditions of mild water stress, using an eddy covariance technique (monodimensional sonic anemometer coupled with a thin thermocouple and a fast-response hygrometer) at two levels a...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00582233
更新日期:1996-03-01 00:00:00
abstract::Although plant growth is generally recognized to be influenced by allocation to defense, genetic background (e.g., inbreeding), and gender, rarely have those factors been addressed collectively. In quaking aspen (Populus tremuloides Michx.), phenolic glycosides (PGs) and condensed tannins (CTs) constitute up to 30 % o...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-016-3577-6
更新日期:2016-06-01 00:00:00
abstract::Gut extracts of Gammarus fossarum liberated reducing substances (at pH values ≤7) and amino acids (pH≥7) from freshly shed oak leaves only after removal of soluble leaf phenols. When carboxymethylcellulose was used at a concentration equal to that of leaf cellulose, release of reducing substances was considerably high...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00349003
更新日期:1982-01-01 00:00:00
abstract::Physiological integration of connected plants of the same clone, or ramets, often increases clonal fitness when ramets differ in resource supply. However, review of the literature found that no study has directly tested the hypothesis that integration can increase the ability of clones to compete against other species...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-020-04823-5
更新日期:2021-01-04 00:00:00
abstract::The interaction of density and mycorrhizal effects on the growth, mineral nutrition and size distribution of seedlings of two perennial members of the Fabaceae was investigated in pot culture. Seedlings of Otholobium hirtum and Aspalathus linearis were grown at densities of 1, 4, 8 and 16 plants per 13-cm pot with or ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317797
更新日期:1992-08-01 00:00:00
abstract:: Habitat fragmentation is becoming increasingly common, yet, the effect of habitat spatial structure on population dynamics remains undetermined for most species. Populations of a single species found in fragmented and nonfragmented habitat present a rare opportunity to examine the effect of habitat spatial structure ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050341
更新日期:1997-11-01 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
pub_type: 杂志文章
doi:10.1007/s004420000533
更新日期:2001-02-01 00:00:00
abstract::In order to scale up from the ecophysiological characters of individual plants to population-level questions, we need to determine if character patterns in natural populations are stable through time, and if the characters are related to growth and survival. We investigated these questions in a 3-year study for one ch...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00316964
更新日期:1994-12-01 00:00:00
abstract::Relationships involving fire and perennial grasses are controversial in Chihuahuan Desert grasslands of southern New Mexico, USA. Research suggests that fire delays the resprouting of perennial grasses well after two growing seasons. However, such results are confounded by livestock grazing, soil erosion, and drought....
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-006-0502-4
更新日期:2006-11-01 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::The ability to respond in a specific manner to different light conditions imposed by different species of grass is a major factor contributing to white clover persistence in pastures. Gaps in a pasture provide light with a higher red:far-red ratio (R:FR) and higher photosynthetic photon flux density (PPFD) than the li...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420000453
更新日期:2000-10-01 00:00:00
abstract::Principal and reduced major axes, and Bulmer's (1975) tests have been suggested as methods for detecting the presence of density dependence in a series of population censuses that are unsuitable for analysis by alternative means e.g. by k-factor analysis. These alternative methods are tested using census data, some of...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378937
更新日期:1987-12-01 00:00:00
abstract::The possibility of ecosystem boundary changes in northern Brazilian Amazonia during the Holocene period was investigated using soil organic carbon isotope ratios. Determination of past and present fluctuations of the forest-savanna boundary involved the measurement of natural 13C isotope abundance, expressed as δ13C, ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00329051
更新日期:1996-12-01 00:00:00
abstract::Parasitic plants often attack multiple host species with unique defenses, physiology, and ecology. Reproductive phenology and vectors of parasitic plant genes (pollinators and dispersers) can contribute to or erode reproductive isolation of populations infecting different host species. We asked whether desert mistleto...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-017-4038-6
更新日期:2018-02-01 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::Short-term responses of producers highlight that key nutrients (e.g., N, P)-or combinations of these nutrients-limit primary production in aquatic and terrestrial ecosystems. These discoveries continue to provide highly valuable insights, but it remains important to ask whether nutrients always predominantly limit pro...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-007-0948-z
更新日期:2008-04-01 00:00:00
abstract::Plant secondary compounds are recognized deterrents and toxins to a variety of herbivores. The effect of secondary compounds on water balance of herbivores is virtually unexplored, yet secondary compounds could potentially cause a decrease in an animal's ability to maintain water balance. We investigated the effects o...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-001-0834-z
更新日期:2002-02-01 00:00:00
abstract::Data are presented on the influence of Athous subfuscus larvae (Coleoptera, Elateridae) on the microbial carbon cycle in the biotically most active horizons of three contrasting beech forest soils: the Ah horizon of a mull soil on limestone (Göttinger Wald, FRG), the F/H horizon of a moder soil on new red sandstone (S...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379044
更新日期:1989-08-01 00:00:00
abstract::Field evidence indicates that adult microtines, especially females, may be a major cause of poor juvenile survival and this may be instrumental in their population regulation. This suggests that males and females behave differently towards young animals. To examine how adult males, nonlactating females, and lactating ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00377385
更新日期:1984-04-01 00:00:00
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
pub_type: 杂志文章
doi:10.1007/BF00377574
更新日期:1987-06-01 00:00:00
abstract::Two annual species of Bromus, an invader (B. hordeaceus, ex B. mollis) and a non-invader (B. intermedius), were grown for 28 days in growth chambers, at 5 and 100 μM NO 3- in flowing nutrient solution. No differences between the two species were observed at either NO 3- level, in terms of relative growth rate (RGR) or...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378673
更新日期:1989-06-01 00:00:00
abstract::We tested the hypothesis that leaves of broad-leaved tree species are more highly defended at low latitudes than at high latitudes. We used canonical discriminant analysis to compare tree species from Panama (9°N, 39 species), Missouri, USA (38°N, 37 species), and southern Ontario, Canada (44°N, 34 species) with respe...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2249-4
更新日期:2012-07-01 00:00:00
abstract::The theory that early successional plants and annual plants will be less well defended against generalist herbivores than later successional plants and perennial plants, because they avoid herbivores by escaping in space and time, is evaluated. The theory is not supported in the ecosystem examined. The correlation bet...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00348094
更新日期:1975-06-01 00:00:00
abstract::We used Y-plant, a computer-based model of crown architecture, to examine the implications of leaf reorientation resulting from petiole bending in Psychotria limonensis (Rubiaceae) seedlings. During this reorientation process, bending of the petioles of lower leaves that are potentially self-shaded by the upper leaves...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-002-1158-3
更新日期:2003-03-01 00:00:00
abstract::Due to an overlap in the resources used by the flight muscles with the resources used during egg production, it has been hypothesised that an increased dispersal in fragmented landscapes may result in a physiological trade-off between flight and reproduction. In a common garden experiment, we investigated the effects ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1613-5
更新日期:2010-06-01 00:00:00
abstract::Heavy damage of the mountain birch foliage, as well as application of small amounts of insect frass to the soil beneath the trees, reduced growth of Epirrita autumnata larvae reared in these trees in the following year. Foliage damage in the previous year decreased larval survival, too. Both foliage damage and insect ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378910
更新日期:1985-02-01 00:00:00