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 examined larvae predation in fragmented forests. Higher richness and abundance of birds foraging at forest fragments translated into more insect larvae preyed upon in forest fragments than in continuous forest. The assessed level of insectivory in forest fragments agrees with lower herbivory levels in forest fragments. This pattern strongly suggests the strengthening of food interactions web in forest fragments of coastal Maulino forest.
journal_name
Oecologiajournal_title
Oecologiaauthors
González-Gómez PL,Estades CF,Simonetti JAdoi
10.1007/s00442-005-0338-3subject
Has Abstractpub_date
2006-05-01 00:00:00pages
137-43issue
1eissn
0029-8549issn
1432-1939journal_volume
148pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract::From 1985-1987, patterns of fruit and seed set were studied in a population of mayapple (Podophyllum peltatum), a clonal, self-incompatible herb found in deciduous woods in eastern North America. Mayapple flowers do not produce nectar, but depend on infrequent visits by nectar-seeking queen bumble bees for pollination...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317156
更新日期:1992-04-01 00:00:00
abstract::Trophic cascades have become a dominant paradigm in ecology, yet considerable debate remains about the relative strength of density- (consumptive) and trait-mediated (non-consumptive) effects in trophic cascades. This debate may, in part, be resolved by considering prey experience, which shapes prey traits (through ge...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-020-04610-2
更新日期:2020-03-01 00:00:00
abstract::Eight species of carabids (six of them represented by two subpopulations) were sampled. It appeared that the mean number of ripe eggs in the ovaries could be regressed on the specific body weight (ranging from 20 to 285 mg dry wt.): the mean decreased in heavier species, and was higher in the autumn breeders than in t...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00384473
更新日期:1984-12-01 00:00:00
abstract::At least once a year the mountain pine beetle searches for lodgepole pines that provide a suitable habitat for a new brood. After attacking females feed, they produce an attractant pheromone that causes beetles to aggregate and, during outbreaks, to usually mass attack the "focus" tree. Near the completion of mass att...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00540133
更新日期:1980-01-01 00:00:00
abstract::The effects of fertilization on leaf longevity and leaf mortality in the Alaskan evergreen shrub, Ledum palustre (Ait.) Hult., were investigated in a field experiment. The fertilization treatments included N alone, P alone, N plus P, and N plus P plus K. After 5 years all treatments had the same effect on leaf longevi...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379686
更新日期:1983-02-01 00:00:00
abstract::Species assembly patterns of local communities are shaped by the balance between multiple abiotic/biotic filters and dispersal that both select individuals from species pools at the regional scale. Knowledge regarding functional assembly can provide insight into the relative importance of the deterministic and stochas...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-018-4122-6
更新日期:2018-05-01 00:00:00
abstract::The response to a single defoliation was studied on three clones of Themeda triandra collected in the short, mid, and tall grassland regions of the Serengeti National Park (Tanzania). These sites represent a gradient of decreasing grazing intensity. Growth, allocation pattern, and several morphometric traits were moni...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379184
更新日期:1988-11-01 00:00:00
abstract::Large-bodied zooplankton of the genus Daphnia are thought to be keystone species in freshwater pelagic habitats, potentially able to exert strong grazing effects and enhance phosphorus limitation of algae. I examined the degree to which Daphnia pulex differ from small-bodied zooplankton in their effects on algal bioma...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-002-0934-4
更新日期:2002-05-01 00:00:00
abstract::Genetic introgression has been suggested as a management tool for mitigating detrimental effects of inbreeding depression, but the role of introgression in species conservation has been controversial, partly because population-level impacts of genetic introgressions are not well understood. Concerns about potential in...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-011-2083-0
更新日期:2012-01-01 00:00:00
abstract::Research on winter energy management in small vertebrates has focused on the regulation of body mass (BM) within a framework of starvation-predation trade-off. Winter-acclimatized birds exhibit a seasonal increase in both BM and basal metabolic rate (BMR), although the patterns of co-variation between the two traits r...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-018-04332-6
更新日期:2019-02-01 00:00:00
abstract::Inter-specific competition, facilitation and predation influence herbivore assemblages, but no study has experimentally explored the interactions between large ungulates and small rodents. In a fully replicated, landscape scale experiment, we manipulated densities of domestic sheep in mountain pastures in Norway. We t...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-004-1792-z
更新日期:2005-04-01 00:00:00
abstract::1. The defecation behavior of the parasitoid larvae of Aleochara curtula in the Calliphora puparium was described. After occupation of the puparium the first-instar larva begins to defecate. With these excrements the larva closes the entry hole. Afterwards the first-instar larva as well as later the second-instar larv...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00345127
更新日期:1973-06-01 00:00:00
abstract::This study examines the idea that variation in forelimb length among male anurans influences reproductive success, and does so independently of body size. Analyses of covariance and multivariate analyses of morphological data for five species of explosives breeders are used to test the prediction that for species in w...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00377623
更新日期:1986-05-01 00:00:00
abstract::In highly dynamic and unpredictable environments such as the Southern Ocean, species that have evolved behaviors that reduce the effects of intra-specific competition may have a selective advantage. This is particularly true when juveniles face disadvantages when foraging due to morphological or physiological limitati...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-004-1704-2
更新日期:2005-01-01 00:00:00
abstract::CrowdedEpirrita larvae had shorter larval periods than, and similar pupal masses to, their solitary siblings when reared on low quality diets. When fed on high quality diets, pupal masses of crowded larvae were lower than in singletons, and there was no difference in larval period. Because changes in food availability...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00776419
更新日期:1988-05-01 00:00:00
abstract::Ectomycorrhizal (EM) fungi form relationships with higher plants; plants transfer C to fungi, and fungi transfer nutrients to their host. While evidence indicates that this interaction is largely mutualistic, less is known about how nutrient supply and EM associates may alter C and nutrient exchanges, especially in in...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-013-2734-4
更新日期:2013-12-01 00:00:00
abstract::Patterns of β-diversity can provide insight into forces shaping community assembly. We analyzed species-rich insect assemblages in two reserve fragments that had once been part of one contiguous Mediterranean coastal pine forest. Local environments are still similar across both fragments, but their landscape context d...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-021-04861-7
更新日期:2021-02-01 00:00:00
abstract::In this paper we test three plant species for the inducibility of their alkaloid production. The plants were heavily damaged by cutting off 50% of their leaf surface using a pair of scissors. The cut-off leaf tips were used as controls for possible diurnal fluctuations. After 3, 6, 12, 24 and 48 h, respectively, the l...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00320998
更新日期:1993-09-01 00:00:00
abstract::Theory suggests that source-sink dynamics can allow coexistence of intraguild predators and prey, but empirical evidence for this coexistence mechanism is limited. We used capture-mark-recapture, genetic methods, and stable isotopes to test whether source-sink dynamics promote coexistence between stream fishes, the in...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-011-1935-y
更新日期:2011-08-01 00:00:00
abstract::Nectar plant utilization by butterflies was compared with the abundance of flowering plants on some SW Swedish meadows. The transportation of pollen grains by individual butterflies was analysed using a scanning electron microscope.For the majority of plant species, butteflies were of minor importance as pollinators. ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379789
更新日期:1984-07-01 00:00:00
abstract::Stemflow inputs of magnesium and potassium were measured from 57 canopy trees representing eight species under heavy rainfall conditions in two tropical forest sites in northeast Queensland, Australia. In the premontane tropical moist forest site on the Atherton Tableland, the stemflow input per unit trunk basal area ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379506
更新日期:1986-10-01 00:00:00
abstract::Phytoplankton abundance in tropical lakes is more often judged to be limited by nitrogen than phosphorus, but seldom does the evidence include controlled enrichments of natural populations. In January 1980 we performed the first experimental fertilization in an equatorial African soda lake, Lake Sonachi, a small, mero...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00367954
更新日期:1982-01-01 00:00:00
abstract::The glossiphoniid leeches Helobdella stagnalis and Glossiphonia complanata co-exist on the stony shores of British lakes. Because both species have a similar life-style and are food limited, the question arises as to how coexistence persists. Laboratory experiments investigated if either leech has a competitive advant...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317664
更新日期:1993-03-01 00:00:00
abstract::Competitive displacement is considered the most severe consequence of interspecific competition; if a superior competitor invades the habitat of an inferior species, the inferior species will be displaced. Most displacements previously reported among arthropods were caused by exotic species. The lack of investigation ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-006-0560-7
更新日期:2006-12-01 00:00:00
abstract::Plasticity of plant traits is commonly quantified by comparing different phenotypes at the same age. In this paper, we present a method in which the effect of resource conditions on plant weight is used as a basis for quantifying the plasticity of individual plant traits. Abutilon theophrasti individuals were grown in...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378741
更新日期:1989-03-01 00:00:00
abstract::We tested, through field experiments and simulation models, the hypothesis that fruit-searching tephritid fruit flies adjust their within-tree search persistence according to the sequence and timing of encounters with parasitized (i.e. egg-infested) and unparasitized Crataegus sp. host fruit. In the field, we presente...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00377365
更新日期:1984-04-01 00:00:00
abstract::Thermogenically elevated cone temperatures were measured in two Macrozamia cycad species that differ in their daily heating time. Mathematical models of the cones' thermo-physics were tested for their accuracy in predicting these cone temperatures and for comparison of the energetics of both species and the sexes with...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-005-0045-0
更新日期:2005-06-01 00:00:00
abstract::In plagiotropic plants, axillary buds on the stolon can be exposed to low red:far-red (R:FR) ratios, while the leaves may be positioned in the uppermost layer of the sward where they are exposed to a high R:FR ratio. We tested whether the light environment of unfolded leaves influences outgrowth of the axillary buds a...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050263
更新日期:1997-08-01 00:00:00
abstract::Emergence and survival of honey mesquite (Prosopis glandulosa var.glandulosa Torr.) seedlings was quantified on sites with contrasting grazing histories: long-term continuous grazing (LTG) and long-term protection (LTP) from grazing by cattle. On each site, different levels of heroaceous defoliation were imposed at mo...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00789926
更新日期:1989-03-01 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