Abstract:
:From 1977 through 1983 we conducted experiments on a desert rodent community where supplemental seeds were added or certain rodent species and ants were removed from 0.25-ha fenced plots in a Chihuahuan Desert site in southeastern Arizona, USA. In this paper we examine the patterns of microhabitat use relative to vegetative cover by 11 rodent species. The results show that: i) removal of the largest seed-eating species, Dipodomys spectabilis, produced the most pervasive and dramatic shifts in microhabitat use by the remaining rodent species; ii) adding seeds or removing ants had little effect on the spatial use of microhabitats by rodents in this community; and iii) non-granivores were just as likely as granivores to shift microhabitat use when other granivores were removed. We believe these results indicate that both food and foraging microsites are limited but the relegation of subdominant species to lesspreferred microhabitats by the large Dipodomys spectabilis is the major factor underlying the spatial organization of this community. Results also demonstrate that strong interactions among species increase the probability that pathways of indirect interactions through intermediary species are important; these complex linkages may include species that overlap little in food preferences.
journal_name
Oecologiajournal_title
Oecologiaauthors
Bowers MA,Thompson DB,Brown JHdoi
10.1007/BF00385048subject
Has Abstractpub_date
1987-04-01 00:00:00pages
77-82issue
1eissn
0029-8549issn
1432-1939pii
10.1007/BF00385048journal_volume
72pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract::Tropical ferns are characterized by a high diversity of plant life forms, yet there have been few large-scale studies on the functional ecology of these different forms. We examined epiphytic, hemiepiphytic, and terrestrial ferns, and asked whether there are differences in the mineral nutrition and water relations acr...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-007-0723-1
更新日期:2007-08-01 00:00:00
abstract::When heterospecific seabirds are part of a nesting colony, there may be less opportunity for conspecifics to come in direct contact with each other, resulting in lower intraspecific aggressiveness. To determine if individuals spend less time in aggressive behavior when nesting in conspecific rather than heterospecific...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050218
更新日期:1997-06-01 00:00:00
abstract::The site of settlement of barnacles (Balanus improvisus) attached on shells of bluemussels (Mytilus edulis) was mapped from a sample of mussels collected in the Baltic Sea. Most barnacles had settled near the siphonal apertures of the mussel. An experiment was made to measure the disadvantages and advantages that livi...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00377317
更新日期:1986-12-01 00:00:00
abstract::Nutrient resorption, a process by which plants degrade organic compounds and resorb their nutrients from senescing tissues, is a crucial plant function to increase growth and fitness in nutrient-poor environments. Tropical trees on phosphorus (P)-poor soils are particularly known to have high P-resorption efficiency (...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-017-3938-9
更新日期:2017-10-01 00:00:00
abstract::Feeding behavior in B. calyciflorus was observed in both constrained and unconfined individuals. There are at least three mechanisms by which the ingestion of suspended particles may be regulated. First, the cirri of the pseudotrochus may be extended, allowing particles to enter the funnel-shaped buccal field, or they...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00345247
更新日期:1977-06-01 00:00:00
abstract::The effects of density on growth and development of Scaphiopus couchi tadpoles in desert ponds were investigated, and sources of mortality over a three-year period were documented. In 16 of the 82 ponds monitored, predation was the principal cause of death, demonstrating that tadpoles in desert ponds may be exposed to...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00377299
更新日期:1987-01-01 00:00:00
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::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
pub_type: 杂志文章
doi:10.1007/BF00380164
更新日期:1989-08-01 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::In a Danish heathland invasion of oak shrub has taken place, the succession rate being approximately 300 m during the last 100 years. The colonisation has occurred in steps related to the delay time between seedling stage and fertility stage. Seedlings are often found in clusters originating from caches probably made ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379242
更新日期:1986-09-01 00:00:00
abstract::Provenance translocations of tree species are promoted in forestry, conservation, and restoration in response to global climate change. While this option is driven by adaptive considerations, less is known of the effects translocations can have on dependent communities. We investigated the relative importance and cons...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-020-04835-1
更新日期:2021-01-20 00:00:00
abstract::Experiments are described which test the hypothesis that more host-specific species of caterpillars should be less aceptable to a generalist predator than polyphagous species. Caterpillars of all species were tested in paired choice tests with the Argentine ant, Iridomyrmex humilis. Experiments were replicated ten tim...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00384324
更新日期:1989-05-01 00:00:00
abstract::Resource partitioning of diet and habitat use was studied in the entire Amazonian ungulate community of Northeastern Peru, which comprises the red brocket deer (Mazama americana), grey brocket deer (M. gouazoubira), collared peccary (Tayassu tajacu), white-lipped peccary (T. pecari), and lowland tapir (Tapirus terrest...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00320611
更新日期:1991-01-01 00:00:00
abstract::Seed number per pod is negatively skewed in Leucaena leucocephala. Post-fertilisation abortion of pods does not completely explain the skewed distribution. It is shown that a pre-fertilisation regulation effectively restricts the formation of pods with less than a certain number of seeds. The regulation is rendered th...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379905
更新日期:1986-11-01 00:00:00
abstract::Ecosystem water-use efficiency (eWUE; the ratio of net ecosystem productivity to evapotranspiration rate) is a complex landscape-scale parameter controlled by both physical and biological processes occurring in soil and plants. Leaf WUE (lWUE; the ratio of leaf CO(2) assimilation rate to transpiration rate) is control...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-009-1465-z
更新日期:2010-02-01 00:00:00
abstract::Induction of plant defence against herbivores may include the attraction by volatile infochemicals of natural enemies of the herbivore. The emitted volatiles that mediate this attraction may also affect the behaviour of the herbivore itself. In this paper we investigate the response of the herbivorous spider miteTetra...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00650331
更新日期:1992-10-01 00:00:00
abstract::In common with samples from less taxonomically constrained studies, significant correlations exist between the numbers of predatory and non-predatory species in assemblages of terrestrial beetles. Under logarithmic transformation the relationship can be described reasonably well by a straight line. Explanations for pr...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317700
更新日期:1992-06-01 00:00:00
abstract::Exposure to enhanced levels of ambient ultraviolet (UV) radiation (UVR) can have adverse effects on aquatic organisms including damage at the cellular and molecular level and impairment of development, fecundity and survival. Much research has been conducted on the role of the harmful UVB radiation. However, due to it...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-013-2773-x
更新日期:2014-02-01 00:00:00
abstract::We evaluate the empirical and theoretical support for the hypothesis that a large proportion of native species richness is required to maximize ecosystem stability and sustain function. This assessment is important for conservation strategies because sustenance of ecosystem functions has been used as an argument for t...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050035
更新日期:2000-02-01 00:00:00
abstract::Four brook-dwelling populations of Ancylus fluviatilis were studied. Data on life-cycle, specimen number, biomass and egg capsule biomass are reported. By means of experimental data on ingestion, assimilation, growth and egg-production, energy balances are calculated for whole populations.Mean annual biomass turned ou...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00344796
更新日期:1976-09-01 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::We tested several assumptions and predictions of host-quality-dependent sex allocation theory (Charnov et al. 1981) with data obtained for the parasitoid Metaphycus stanleyi Compere on its host, brown soft scale (Coccus hesperidum L.), in a California citrus grove and in the laboratory. Scales ceased growing after par...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050616
更新日期:1998-10-01 00:00:00
abstract::The effects of notonectid-induced crests on growth and reproduction, and resource allocation to crest construction, moult losses and eggs of Daphnia carinata were measured. An attempt was made to elucidate the mechanisms of physiological costs of crest induction for this species. The crested morph of d. carinata reach...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00323161
更新日期:1994-03-01 00:00:00
abstract::Canada mayflower (Maianthemum canadense Desf.), a rhizomatous, perennial herb, was the subject of a 2-year field experiment that examined two factors potentially affecting fruit and seed production: pollen addition and ramet isolation. Ramets were either open pollinated or overpollinated by hand to supplement natural ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050155
更新日期:1997-04-01 00:00:00
abstract::This paper presents tests of a model of wound-induced defence in herbaceous plants. Many studies have reported both chemical changes in leaves and changes in the behaviour and/or physiology of herbivores as a result of wounding leaves. These studies and others have led to the development of various models to explain w...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00333221
更新日期:1996-10-01 00:00:00
abstract::Climate change effects on plants are expected to be primarily mediated through early life stage transitions. Snowfall variability, in particular, may have profound impacts on seedling recruitment, structuring plant populations and communities, especially in mid-latitude systems. These water-limited and frequently inva...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-014-3180-7
更新日期:2015-02-01 00:00:00
abstract::Avian malaria parasites are known to have negative effects on their hosts, including consequences for reproductive success and survival. However, the outcome of disease may vary greatly among individuals, due to their particular genetic background, their past history of exposure to infections, or the way they respond ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-018-4290-4
更新日期:2018-12-01 00:00:00
abstract::The carotenoid composition of 33 species of green algal lichens and 5 species of blue-green algal lichens was examined and compared with that of the leaves of higher plants. As in higher plants, green algal lichen species which were found in both shade and full sunlight exhibited higher levels of the carotenoids invol...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00566975
更新日期:1993-07-01 00:00:00
abstract::The paper considers a model of competition, based upon the Lotka-Volterra equations, which explicitly considers the effect of density independent mortality upon the outcome of competition. The model's possible application to wild Drosophila species in Europe are considered. ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00345527
更新日期:1975-12-01 00:00:00
abstract::Difficulties in using genetic markers to demonstrate that changes in gene frequency cause fluctuations in the density of animal populations are illustrated. The frequency of chicks with light-coloured down increased during 4 years when population density of red grouse declined and the inherent level of aggressive beha...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379422
更新日期:1987-10-01 00:00:00