Abstract:
:1 Intake of food, fat, protein and carbohydrates and their fecal output were recorded during the annual body weight cycle of the garden warbler, and old-world longdistance migratory bird species, and the efficiencies of food and nutrient utilization, defined as the ratio (intake-fecal output)/intake, were calculated. 2. Gross food intake and food and nutrient utilization differed significantly between different phases of the birds' body weight cycle. 3. During premigratory fattening, both in "autumn" and "spring", food intake and utilization of fat, protein and carbohydrates were significantly higher than during the low body weight prefattening periods. 4. The increase in efficiency of nutrient utilization accounted for about 1/3 and the increase in gross food intake about 2/3 of all surplus energy for hyperlipogenesis in the premigratory periods of the garden warbler. 5. The seasonal changes in efficiency of food and nutrient utilization seem to be driven by a circannual timing mechanism.
journal_name
Oecologiajournal_title
Oecologiaauthors
Bairlein Fdoi
10.1007/BF00379483subject
Has Abstractpub_date
1985-12-01 00:00:00pages
118-125issue
1eissn
0029-8549issn
1432-1939pii
10.1007/BF00379483journal_volume
68pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract::Disturbances reduce the biota in stream ecosystems, and leave biological legacies, including remnant species, which potentially influence post-disturbance community development but are poorly understood. We investigated whether three remnant species, the snail Radix peregra, the mayfly Serratella ignita and the freshw...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-006-0412-5
更新日期:2006-07-01 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::Using data from three fires in northeastern Spain, we tested a condition necessary to support the idea that fire has been a factor in the evolution of the resprouting habit: populations of all resprouting species within a community should show high levels of genet survival after fires and show a low coefficient of var...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00650321
更新日期:1992-10-01 00:00:00
abstract::Seasonal net nitrogen (N) and phosphorus (P) mineralization was investigated at Abisko, Swedish Lapland in soils of a subarctic heath and in soils of a colder (by about 4° C), high altitude fellfield by (a) using in situ soil incubation in soils which had been shaded or subjected to two levels of increased temperature...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00323488
更新日期:1993-08-01 00:00:00
abstract::Pollen movement is often restricted in natural populations, and insufficient pollination is a potential constraint on sexual reproduction in outcrossing species. Seed-set should decrease with increased distance from the pollen source in outcrossing plants. This prediction was tested using females of the clonal, gynodi...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317751
更新日期:1990-06-01 00:00:00
abstract::1. In an attempt to evaluate the importance of individual daily habits to a freeliving animal, foraging behaviour of kestrels was observed continuously for days in sequence in open country. Data obtained in 2,942 observation hours were used. Flight-hunting was the prominent foraging technique yielding 76% of all prey ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00344982
更新日期:1981-09-01 00:00:00
abstract::Plant species vary greatly in the degree to which floral morphology restricts access to the flower interior. Restrictiveness of flower corollas may influence heterospecific pollen receipt, but the impact of floral morphology on heterospecific pollen transfer has received little attention. We characterized patterns of ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-011-2094-x
更新日期:2012-02-01 00:00:00
abstract::In indeterminate plant species, the rate of vegetative growth usually declines during the stage of active reproductive growth. Fruit shedding, as induced by insect herbivores, could counteract this decline. Due to the relative increase in vegetative growth, plants that have suffered reproductive damage could be better...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050102
更新日期:1997-02-01 00:00:00
abstract::It is shown that litter of flowering plants of Cirsium vulgare inhibits the growth of seedlings of the same species at concentrations as low as 0.4% (g litter/g soil). The inhibition of growth cannot be fully compensated by adding nutrients, which indicates that autotoxicity may occur. It must be concluded, however, f...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379212
更新日期:1985-01-01 00:00:00
abstract::Using resource selection functions, we examined habitat selection patterns of barren-ground grizzly bears (Ursus arctos) in the central Canadian Arctic among and within home ranges. There was no difference between the sexes with regard to habitat selection patterns at the home range level (Wilks' λ, approx. F 11,11=1....
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-002-0941-5
更新日期:2002-06-01 00:00:00
abstract::Mimicry between rewarding and non-rewarding flowers within individuals has been accepted as a strategy favored by selection to deceive pollinators. It has been proposed that this mechanism relies on the exploitation of pollinator's sensory biases, but field evidence is still scarce. In this study, we describe the mech...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2250-y
更新日期:2012-07-01 00:00:00
abstract::Spatial genetic patterns can be influenced by a broad range of factors across a landscape. The hypothesis that heterogeneous vegetation and habitat fragmentation rather than water flow influence genetic patterns in two riparian plant species with different niches was tested. Genotyping by sequencing was used to assess...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-018-4226-z
更新日期:2018-10-01 00:00:00
abstract::With multiple species introductions and rapid global changes, there is a need for comprehensive invasion models that can predict community responses. Evidence suggests that abiotic constraint, propagule pressure, and biotic resistance of resident species each determine plant invasion success, yet their interactions ar...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-014-3188-z
更新日期:2015-05-01 00:00:00
abstract::Natural regeneration of abandoned farmland provides an important opportunity to contribute to global reforestation targets, including the Bonn Challenge. Of particular importance are the montane tropics, where a long history of farming, frequently on marginal soils, has rendered many ecosystems highly degraded and hot...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-019-04497-8
更新日期:2019-10-01 00:00:00
abstract::We studied the nutritional behaviour of hinds foraging on a mixed-forest edge by direct observation of their choices at each season and by measuring nutrient concentration in the plants. We compared nutrient concentrations in the observed diets with those in the total available vegetation, and with those of 1,000 rand...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-008-1020-3
更新日期:2008-06-01 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::Sexual expression in hermaphroditic plants is often a function of environmental factors affecting individuals before or during flowering. I tested for the effects of floral herbivory and lack of pollination in early umbels on the relative proportions of hermaphroditic and staminate (male) flowers produced on later umb...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050084
更新日期:1997-01-01 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::During the last 20 years, ecologists discovered the importance of including spatial relationships in models of species distributions. Among the latest developments in modelling how species are spatially structured are eigenfunction-based spatial filtering methods such as Moran's eigenvector maps (MEM) and principal co...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1867-y
更新日期:2011-06-01 00:00:00
abstract::The tree species Xylocarpus granatum is commonly described as occurring in the upper intertidal zone of mangrove forests, but mature trees are occasionally found at lower elevations. In the Utwe River basin, on the Pacific island of Kosrae, we investigated the relative importance of several biotic and abiotic factors ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-002-1167-2
更新日期:2003-03-01 00:00:00
abstract::The mass loss of litter mixtures is often different than expected based on the mass loss of the component species. We investigated if the identity of neighbour species affects these litter-mixing effects. To achieve this, we compared decomposition rates in monoculture and in all possible two-species combinations of ei...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-009-1454-2
更新日期:2010-02-01 00:00:00
abstract::In a North Carolina population of Diamorpha smallii, densities were artificially manipulated by thinning stands to predetermined densities. Individuals in areas of high density produce fewer seeds than individuals at low density in the same habitat. Three components of fecundity, the number of flowers per plant, the n...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00344643
更新日期:1981-10-01 00:00:00
abstract::Seasonal reductions in food availability may cause animals to catabolize endogenous tissue and the resulting loss of lean mass can hinder their ability to forage and reproduce. While several studies have considered nitrogen isotopes (δ15N) as an indicator of catabolism, relationships between protein intake, body condi...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-017-4010-5
更新日期:2018-02-01 00:00:00
abstract::In mutualistic interactions, partners obtain a net benefit, but there may also be costs associated with the provision of benefits for a partner. The question of whether aphids suffer such costs when attended by ants has been raised in previous work. Transgenerational effects, where offspring phenotypes are adjusted ba...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-013-2659-y
更新日期:2013-11-01 00:00:00
abstract::Although the selective loss of individuals susceptible to disease can favor the evolution of female preference for older males, the interrelationship between age, infection, longevity, and mating success remains poorly characterized in natural populations. In a longitudinal study of 61 male common yellowthroats (Geoth...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-017-3919-z
更新日期:2017-08-01 00:00:00
abstract::We demonstrate that an egg parasitoid, Anagrus delicatus (Mymaridae, Hymenoptera) and its host, Prokelesia marginata (Delphacidae, Homoptera) regularly disperse 1 km or more in a north Florida saltmarsh. Anagrus delicatus were caught on yellow sticky traps on offshore islets and oyster bars throughout the spring, summ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00377520
更新日期:1987-09-01 00:00:00
abstract::Tooth enamel apatite carbonate carbon and oxygen isotope ratios of modern kangaroos (Macropus spp.) collected on a 900-km latitudinal transect spanning a C(3)-C(4) transition zone were analysed to create a reference set for palaeoenvironmental reconstruction in southern Australia. The carbon isotope composition of ena...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2425-6
更新日期:2013-02-01 00:00:00
abstract::Fluxes of CO2 and N2O were measured from both natural and experimentally augmented snowpacks during the winters of 1993 and 1994 on Niwot Ridge in the Colorado Front Range. Consistent snow cover insulated the soil surface from extreme air temperatures and allowed heterotrophic activity to continue through much of the ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/PL00008814
更新日期:1997-04-01 00:00:00
abstract::The Alaskan tussock tundra is a strongly nutrient-limited ecosystem, where almost all vascular plant species are mycorrhizal. We established a long-term removal experiment to document effects of arctic plant species on ecto- and ericoid mycorrhizal fungi and to investigate whether species interactions and/or nutrient ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-003-1349-6
更新日期:2003-11-01 00:00:00
abstract::Plants of Dudleya blochmanae were studied over a growing season (December-June) in their native habitat on the central California coast. During the season soil water potential fluctuatdd widely, becoming unmeasurably negative (<-5.0 MPa) by early May. In contrast, leaf water potential did not fluctuate greatly with th...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00377545
更新日期:1984-09-01 00:00:00