Adaptive variation in vein placement underpins diversity in a major Neotropical plant radiation.

abstract：:Carbon dioxide exchange patterns of prickly-pear cactus (Opuntia phaeacantha var. discata) were studied throughout the year to determine temperature influences on and seasonal responses of the process. Cacti exhibit CAM which permits nighttime carboxylation of CO2 to malate and daytime decarboxylation of malate to CO2...

journal_title：Oecologia

authors： Nisbet RA,Patten DT

更新日期：1974-12-01 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

authors： Byun C,de Blois S,Brisson J

更新日期：2015-05-01 00:00:00

abstract：:There is considerable theoretical evidence that a trade-off between competitive and colonization ability enables species coexistence. However, empirical studies testing for the presence of a competition-colonization (CC) trade-off and its importance for species coexistence have found mixed results. In a microcosm expe...

journal_title：Oecologia

authors： Limberger R,Wickham SA

更新日期：2011-11-01 00:00:00

abstract：:Cladoceran hatching frequency can easily be calculated from observed egg age distribution and estimated egg development time. The large timelag errors of models incorporating birth rates in the equation are avoided, and the population growth rate can be estimated directly. ...

journal_title：Oecologia

authors： Johnsen G

更新日期：1983-11-01 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

authors： Yule KM,Bronstein JL

更新日期：2018-02-01 00:00:00

abstract：:1. There is a well-defined time sequence in the oxygen consumption of Porcellio scaber. A maximal rate (the 'active rate') is obtained in woodlice subjected to the maximal disturbance of food presentation, handling and light. After initial exploratory activity has ceased, the oxygen consumption declines through a seri...

journal_title：Oecologia

authors： Newell RC,Wieser W,Pye VI

更新日期：1974-03-01 00:00:00

abstract：:Measurements are reported of carbon isotope ratios of Dudleya species growing in natural plant communities. Considerable variation in the δ13C values are interpreted as indicating substantial flexibility of the photosynthetic pathways between C3 and CAM. The variability in photosynthetic pathway was in response to gen...

journal_title：Oecologia

authors： Troughton JH,Mooney HA,Berry JA,Verity D

更新日期：1977-12-01 00:00:00

abstract：:Occurrence and diet of ten carnivorous predators (four falconiforms, four owls, and two foxes), and population levels of their mammalian prey, were monitored over 45 months at a semi-arid site in north-central Chile. Early in this period, small mammals irrupted and then declined markedly to a density 7% of that at pea...

journal_title：Oecologia

authors： Jaksié FM,Jiménez JE,Castro SA,Feinsinger P

更新日期：1992-01-01 00:00:00

abstract：:Diel vertical migration (DVM) of herbivorous zooplankton is a widespread behavioural phenomenon in freshwater ecosystems. So far only little attention has been paid to the impact of DVM on the phytoplankton community in the epilimnion. Some theoretical models predict that algal population growth in the epilimnion shou...

journal_title：Oecologia

authors： Reichwaldt ES,Wolf ID,Stibor H

更新日期：2004-11-01 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

authors： Templer PH,Weathers KC,Lindsey A,Lenoir K,Scott L

更新日期：2015-01-01 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

authors： Newman RA

更新日期：1987-01-01 00:00:00

abstract：:Asexual fungal endophytes, which do not produce reproductive structures, spread in host populations only vertically via the propagules of their hosts. With such a close relationship between the fitness of the asexual endophyte and that of the host, the relationship is traditionally thought to be mutualistic. Here we p...

journal_title：Oecologia

authors： Olejniczak P,Lembicz M

更新日期：2007-06-01 00:00:00

abstract：:I attempted to characterize spatial units of local dynamics and dispersal in banner-tailed kangaroo rats (Dipodomys spectabilis), to determine if spatial structure influenced population dynamics in the way predicted by current metapopulation models. D. spectabilis exhibited a hierarchical spatial structure. "Local pop...

journal_title：Oecologia

authors： Amarasekare P

更新日期：1994-11-01 00:00:00

abstract：:We tested whether interspecific competition from Aedes albopictus had measurable effects on A. aegypti at the typical numbers of larval mosquitoes found in cemetery vases in south Florida. We also tested whether the effect of interspecific competition from A. albopictus on A. aegypti differed between sites where A. ae...

journal_title：Oecologia

authors： Juliano SA,Lounibos LP,O'Meara GF

更新日期：2004-05-01 00:00:00

abstract：:I examined the effects of pollen loads containing pollen from one, three and five donors on fruit production and fruit quality in Campsis radicans. Number of pollen donors had no significant effect on % fruit production, seed number, seed weight or seed germination. In singledonor pollinations the identity of the dono...

journal_title：Oecologia

authors： Bertin RI

更新日期：1986-08-01 00:00:00

abstract：:1. The mortality of part of the Calathus melanocephalus (Linn.) population, which showed locomotory activity during autumn 1966 was studied in the following year. 2. Mortality occurs mainly during the winter; during the winter of 1966-1967 it was about 36-41% for normal males and females at Schiermonnikoog (Table 1). ...

journal_title：Oecologia

authors： Vlijm L,van Dijk TS,Wijmans SY

更新日期：1968-11-01 00:00:00

abstract：:In abandoned or extensively managed grasslands, the mechanisms involved in pioneer tree species success are not fully explained. Resource competition among plants and microclimate modifications have been emphasised as possible mechanisms to explain variation of survivorship and growth. In this study, we evaluated a nu...

journal_title：Oecologia

authors： Picon-Cochard C,Coll L,Balandier P

更新日期：2006-06-01 00:00:00

abstract：:Food density, degree of hunger prior to foraging, and food processing difficulty were varied in order to determine their effects on the diet diversity of captive Peromyscus leucopus foraging for buried seeds. No relationship was found between diet diversity and food density. However, diet diversity exhibited a signifi...

journal_title：Oecologia

authors： Ebersole JP,Wilson JC

更新日期：1980-07-01 00:00:00

abstract：:Bromus tectorum L. dominates sites of large-scale disturbance, while Poa pratensis L. dominates the sites of small-scale disturbance in the Festuca/Symphoricarpos habitat type in eastern Washington (USA). The role of incident irradiation in influencing these distributions was examined using field and glasshouse experi...

journal_title：Oecologia

authors： Bookman PA,Mack RN

更新日期：1983-03-01 00:00:00

abstract：:Plant roots transfer water between soil layers of different water potential thereby significantly affecting the distribution and availability of water in the soil profile. We used a modification of the heat pulse method to measure sap flow in roots of Grevillea robusta and Eucalyptus camaldulensis and demonstrated a r...

journal_title：Oecologia

authors： Burgess SS,Adams MA,Turner NC,Ong CK

更新日期：1998-07-01 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

authors： Coleman RA,Barker AM,Fenner M

更新日期：1996-10-01 00:00:00

abstract：:Gas exchange measurements of two arctic tundra plants, Dupontia fischeri and Carex aquatilis, and two alpine tundra species, Deschampsia caespitosa and Geum rossii, were conducted under a range of atmospheric and soil moisture stress conditions to determine if photosynthetic adaptations to water stress may play a role...

journal_title：Oecologia

authors： Johnson DA,Caldwell MM

更新日期：1975-06-01 00:00:00

abstract：:Several components of the diversity of plant communities, such as species richness, species composition, number of functional groups and functional composition, have been shown to directly affect the performance of exotic species. Exotics can also be affected by herbivores of the native plant community. However, these...

journal_title：Oecologia

authors： Prieur-Richard AH,Lavorel S,Linhart YB,Dos Santos A

更新日期：2002-01-01 00:00:00

abstract：:Population dynamics of attached algae in a eutrophic farmland stream (Wellow Brook, England) were correlated through multiple regression analyses with changes in 7 physico-chemical parameters (temperature, light, water velocity, pH, NO3-N, P2O5-P, SiO2-Si). Samples were taken every 2 weeks for 25 consecutive months be...

journal_title：Oecologia

authors： Moore JW

更新日期：1977-09-01 00:00:00

abstract：:Studies that test community assembly hypotheses in observational communities frequently evaluate patterns for plots or entire communities, yet studies that examine assembly patterns across spatial scales show that they are greatly influenced by scale. Here, we test the spatial dependency of patterns of relatedness and...

journal_title：Oecologia

authors： Jin LS,Yin D,Fortin MJ,Cadotte MW

更新日期：2020-07-01 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

authors： Steen H,Mysterud A,Austrheim G

更新日期：2005-04-01 00:00:00

abstract：:The effects on plant growth and stomatal physiology of alterations in light quantity and quality during development were investigated in the C3 monocot, Commelina communis. Reduction in light intensity resulted in decreased branching and stem elongation, with effects more severe under "neutral shade" (R:FR≥1.0) than u...

journal_title：Oecologia

authors： Assmann SM

更新日期：1992-11-01 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

authors： Hostetler JA,Onorato DP,Bolker BM,Johnson WE,O'Brien SJ,Jansen D,Oli MK

更新日期：2012-01-01 00:00:00

abstract：:We obtined data on body mass and growth rates for the immature members of two groups of wild baboons in Amboseli National Park, Kenya. Data were collected without feeding, trapping, or handling. The data were separated into cross-sectional and longitudinal components, allowing both the examination of body mass-age rel...

journal_title：Oecologia

authors： Altmann J,Alberts S

更新日期：1987-04-01 00:00:00

abstract：:During a severe outbreak of sarcoptic mange (Sarcoptes scabiei vulpes) starting among red foxes (Vulpes vulpes) in Sweden in the 1970s, we studied: 1) the establishment and spread of the disease in northernmost Sweden (by inquiries), and 2) the 1970-84 bag records for foxes and mountain hares (Lepus timidus) (an alter...

journal_title：Oecologia

authors： Danell K,Hörnfeldt B

更新日期：1987-10-01 00:00:00