The resistance of Pteridium aquilinum (L.) Kuhn to insect attack by Trichoplusia ni (Hübn.).

abstract：:Sabal palmetto (Walt.) Lodd. ex Schultes (cabbage palm) is an arborescent palm common in many plant communities throughout Florida, U.S.A., and the Caribbean. Although its seedlings grow very slowly in forest understories, they survive damage and defoliation well, and the species may increase in dominance following di...

journal_title：Oecologia

authors： McPherson K,Williams K

更新日期：1998-12-01 00:00:00

abstract：:A number of studies at large scales have pointed out that abiotic factors and recolonization dynamics appear to be more important than biotic interactions in structuring stream-fish assemblages. In contrast, experimental and field studies at small scales show the importance of competition among stream fishes. However,...

journal_title：Oecologia

authors： Peres-Neto PR

更新日期：2004-07-01 00:00:00

abstract：:Interspecific hybridization is an important and common evolutionary mechanism, but field-based evaluations of changes in realized niches and zonation patterns of native and exotic hybrids relative to those of their parental plant species are rare. Would native hybrids forming hybrid zones between their parental specie...

journal_title：Oecologia

authors： Gallego-Tévar B,Curado G,Grewell BJ,Figueroa ME,Castillo JM

更新日期：2018-11-01 00:00:00

abstract：:Female lifetime reproductive success in a small population of individually-marked adders in southern Sweden was studied over a period of seven years. Reproductive characteristics varied little from year to year and were consistent through time in individual females. Most females mature at four years of age and reprodu...

journal_title：Oecologia

authors： Madsen T,Shine R

更新日期：1992-10-01 00:00:00

abstract：:The influence of irrigation and nitrogen fertilization in early summer on root and shoot growth of Atriplex confertifolia, a C4 shrub species, was examined in a cold-winter desert community in northern Utah. Soil water and xylem pressure potentials were monitored during the summer period.At the time of watering the su...

journal_title：Oecologia

authors： Hodgkinson KC,Johnson PS,Norton BE

更新日期：1978-01-01 00:00:00

abstract：:Understanding climatic controls on tropical forest productivity is key to developing more reliable models for predicting how tropical biomes may respond to climate change. Currently there is no consensus on which factors control seasonal changes in tropical forest tree growth. This study reports the first comprehensiv...

journal_title：Oecologia

authors： Rowland L,Malhi Y,Silva-Espejo JE,Farfán-Amézquita F,Halladay K,Doughty CE,Meir P,Phillips OL

更新日期：2014-01-01 00:00:00

abstract：:Nutrient availability and herbivory can regulate primary production in ecosystems, but little is known about how, or whether, they may interact with one another. Here, we investigate how nitrogen availability and insect herbivory interact to alter aboveground and belowground plant community biomass in an old-field eco...

journal_title：Oecologia

authors： Blue JD,Souza L,Classen AT,Schweitzer JA,Sanders NJ

更新日期：2011-11-01 00:00:00

abstract：:Availability of light and water differs between tropical moist and dry forests, with typically higher understorey light levels and lower water availability in the latter. Therefore, growth trajectories of juvenile trees--those that have not attained the canopy--are likely governed by temporal fluctuations in light ava...

journal_title：Oecologia

authors： Brienen RJ,Zuidema PA,Martínez-Ramos M

更新日期：2010-06-01 00:00:00

abstract：:Eriophorum vaginatum is a characteristic species of northern peatlands and a keystone plant for cutover bog restoration. Understanding the factors affecting E. vaginatum seedling establishment (i.e. growth dynamics and allocation) under global change has practical implications for the management of abandoned mined bog...

journal_title：Oecologia

authors： Siegenthaler A,Buttler A,Grosvernier P,Gobat JM,Nilsson MB,Mitchell EA

更新日期：2013-02-01 00:00:00

abstract：:Clone mal9, a genotype ofSolanum dulcamara L. having photosynthetic characteristics similar to previously hypothesized shade ecotypes, is compared to five other genotypes having photosynthetic characteristics similar to previously hypothesized sun ecotypes. The primary differences are a 35% reduction in total leaf con...

journal_title：Oecologia

authors： Clough JM,Alberte RS,Teeri JA

更新日期：1980-01-01 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

authors： Monson RK,Prater MR,Hu J,Burns SP,Sparks JP,Sparks KL,Scott-Denton LE

更新日期：2010-02-01 00:00:00

abstract：:The population metabolism of N. muscorum at a beechwood site in southern England was determined for two separate year periods by two methods; a detailed computer analysis and a 'best estimate'. These methods, which are based on data of biomass, population dynamics, field temperatures, and respiration rates of all life...

journal_title：Oecologia

authors： Goddard SJ

更新日期：1979-01-01 00:00:00

abstract：:After herbivore attack, plants launch a suite of direct and indirect defense responses that must be coordinated if plants are to realize a fitness benefit from these responses. Here we characterize the volatile emissions in the native tobacco plant, Nicotiana attenuata Torr. ex Wats., that are elicited by tobacco horn...

journal_title：Oecologia

authors： Halitschke R,Keßler A,Kahl J,Lorenz A,Baldwin IT

更新日期：2000-08-01 00:00:00

abstract：:Hypotheses about the influence of intraspecific density and available cover on home range size (=mean activity radius) of a plethodontid salamander (Desmognathus monticola) were tested by field experimentation from June 1980 to October 1981. A second order mountain stream in southwestern North Carolina was marked into...

journal_title：Oecologia

authors： Kleeberger SR

更新日期：1985-06-01 00:00:00

abstract：:Species distributions are dependent on interactions with abiotic and biotic factors in the environment. Abiotic factors like temperature, moisture, and soil nutrients, along with biotic interactions within and between species, can all have strong influences on spatial distributions of plants and animals. Terrestrial A...

journal_title：Oecologia

authors： Potts LJ,Gantz JD,Kawarasaki Y,Philip BN,Gonthier DJ,Law AD,Moe L,Unrine JM,McCulley RL,Lee RE Jr,Denlinger DL,Teets NM

更新日期：2020-12-01 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

authors： Otte D

更新日期：1975-06-01 00:00:00

abstract：:Branch sampling of branch diameter and fruit crop on 22 species of Barbadian trees and shrubs provided sufficient data to build regressions between plant size and fruit crop weight. Orchard plants bear much more fruit than wild, feral or garden plants of similar size, but this difference disappears in multiple regress...

journal_title：Oecologia

authors： Peters RH,Cloutier S,Dubé D,Evans A,Hastings P,Kaiser H,Kohn D,Sarwer-Foner B

更新日期：1988-01-01 00:00:00

abstract：:We studied the population structure of a high arctic breeding wader bird species, the White-rumped Sandpiper Calidris fuscicollis. Breeding adults, chicks and juveniles were sampled at seven localities throughout the species' breeding range in arctic Canada in 1999. The mitochondrial control region was analysed by DNA...

journal_title：Oecologia

authors： Wennerberg L,Klaassen M,Lindström Å

更新日期：2002-05-01 00:00:00

abstract：:(1) Small saplings of Tilia cordata, when planted in deciduous woodlands, are damaged or destroyed by rodents. (2) Experiments with captive animals show that the damage is identical with that caused by bank voles. (3) Bank voles are present at all sites where damage occurs. (4) Small saplings of Betula spp. establishe...

journal_title：Oecologia

authors： Pigott CD

更新日期：1985-10-01 00:00:00

abstract：:Four shrub species of the Australian Proteaceae (Hakea sericea, H. gibbosa, H. suaveolens and H. salicifolia) were introduced to South African fynbos shrublands between 1840 and 1860. H. sericea is highly invasive, H. gibbosa and H. suaveolens are moderately invasive and H. salicifolia is not invasive. The allocation ...

journal_title：Oecologia

authors： Richardson DM,Van Wilgen BW,Mitchell DT

更新日期：1987-02-01 00:00:00

abstract：:Honeybees (Apis mellifera) and bumblebees (Bombus spp.) often undergo exploitative competition for shared floral resources, which can alter their foraging behaviour and flower choice, even causing competitive exclusion. This may be strongest in summer, when foraging conditions are most challenging for bees, compared t...

journal_title：Oecologia

authors： Wignall VR,Campbell Harry I,Davies NL,Kenny SD,McMinn JK,Ratnieks FLW

更新日期：2020-02-01 00:00:00

abstract：:We examined patterns of density and species diversity for leaf-mining Lepidopterans and gall-forming Hymenopterans in two oak (Quercus spp.) hybrid zones: Quercus depressipes x Q. rugosa and Q. emoryi x Q. coccolobifolia. In both species complexes, hybrid hosts typically supported significantly lower densities and spe...

journal_title：Oecologia

authors： Boecklen WJ,Spellenberg R

更新日期：1990-11-01 00:00:00

abstract：:In the non-reproductive period, six species of brood parasites (4 cuckoos, 2 viduines) observed in Rhodesia and in the Kalahari were found to inhabit other areas than their hosts, being either nomadic or migratory in habit. They are hence exposed to different environmental conditions.Histological examination of the go...

journal_title：Oecologia

authors： Immelmann K

更新日期：1969-09-01 00:00:00

abstract：:Historically, ecologists have been more interested in organisms feeding at the tops of food chains than in organisms feeding at or near the bottom. The problem of taxonomic and trophic inconsistency within and among described food webs is central to criticisms of contemporary food web research. To study the effects of...

journal_title：Oecologia

authors： Sugihara G,Bersier LF,Schoenly K

更新日期：1997-10-01 00:00:00

abstract：:Interspecific interactions of herbivores sharing a host plant may be important in structuring herbivore communities. We investigated host plant-mediated interactions of root (Hylobius transversovittatus) and leaf herbivores (Galerucella calmariensis), released to control purple loosestrife (Lythrum salicaria) in North...

journal_title：Oecologia

authors： Hunt-Joshi TR,Blossey B

更新日期：2005-02-01 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

authors： Hopley T,Byrne M

更新日期：2018-10-01 00:00:00

abstract：:The gas exchange characteristics of two C3 desert annuals with contrasting phenologies, Geraea canescens T. & G. (winter-active) and Dicoria canescens T. & G. (summer-active), both Asteraceae, were determined for plants grown under a moderate (25°/15° C, day/night temperature) and a high (40°/27° C) growth temperature...

journal_title：Oecologia

authors： Toft NL,Pearcy RW

更新日期：1982-11-01 00:00:00

abstract：:More than 500 species of the Poaceae are found in Kenya, East Africa. Eighteen of twenty-seven tribes are exclusively (except the Paniceae and Danthonieae) of the C3 photosynthetic type. A floristic analysis of low altitude grasslands suggests that nearly all species at these low altitudes are of the C4 photosynthetic...

journal_title：Oecologia

authors： Tieszen LL,Senyimba MM,Imbamba SK,Troughton JH

更新日期：1979-01-01 00:00:00

abstract：:Animals were acclimitized to a daily cycle of 15-25°C and a photoperiod of LD 12:12. Parietalectomized animals in an experimental thermal gradient (15°C-40°C, LD 12:12) selected significantly higher temperatures than controls at all hours of the day except from 0800-1200. These results suggest that the lizard parapine...

journal_title：Oecologia

authors： Hutchison VH,Kosh RJ

更新日期：1974-06-01 00:00:00

abstract：:We assessed the ecomorphological structure of a guild of rhinolophoid bats in a Malaysian rainforest first described by Heller and von Helversen (1989). These authors found that the distribution of echolocation call frequencies used by 12 syntopic species was more even than expected from allometric relationships or in...

journal_title：Oecologia

authors： Kingston T,Jones G,Zubaid A,Kunz TH

更新日期：2000-08-01 00:00:00