Habitat architecture and trophic interaction strength in a river: riffle-scale effects.

abstract：:Identifying links between morphology and performance for ecologically relevant tasks will help elucidate the relationships between organismal design and fitness. We conducted a laboratory study to quantify the relationship between variation in body shape and prey-capture success in four drift-feeding minnow species. W...

journal_title：Oecologia

authors： Rincón PA,Bastir M,Grossman GD

更新日期：2007-05-01 00:00:00

abstract：:Species-habitat relationships are an important aspect of fish life history, particularly in early ontogeny. To address the lack of information on the microhabitat use/requirements of European coarse fishes, particularly 0-group fishes in riverine systems, an empirical model was generated from data collected in the Riv...

journal_title：Oecologia

authors： Copp GH

更新日期：1992-09-01 00:00:00

abstract：:A series of seventeen plant extracts rich in phenolic materials, including condensed and hydrolysable tannins, have been subjected to a series of chemical analyses in an attempt to gather ecologically significant information about their structure. Procedures investigated were (i) the Folin-Denis and Hagerman and Butle...

journal_title：Oecologia

authors： Mole S,Waterman PG

更新日期：1987-04-01 00:00:00

abstract：:This paper investigates the effect of brood parasitism in a dung beetle assemblage in an arid region of Spain. The study was conducted during the spring season (March-May 1994-1998) using mesh cylinders buried into the ground, filled with sand and with sheep dung on top. We quantified the proportion of nests containin...

journal_title：Oecologia

authors： González-Megías A,Sánchez-Piñero F

更新日期：2003-01-01 00:00:00

abstract：:Enemy release often is invoked to explain the success of invasive plants: an invader benefits from reduced attack as it escapes specialized enemies through the invasion process. Enemy release typically is thought of as occurring at large geographic scales, but local-scale interactions may also be important for invader...

journal_title：Oecologia

authors： Nunes KA,Kotanen PM

更新日期：2018-09-01 00:00:00

abstract：:Wire cages with different-sized meshes were placed on trunks and around leaves at different heights in oak trees and in forest litter. Gypsy moth, Lymantria dispar, instars II-V tethered with threads were placed in each cage (instars II-III only in leaf cages) as well as outside the cages. Predation of larvae decrease...

journal_title：Oecologia

authors： Weseloh RM

更新日期：1988-11-01 00:00:00

abstract：:The spatial distributions of selected soil properties in two adjacent sites in southwest Michigan were examined to evaluate the potential effects of chronic disturbance on resource heterogeneity. One site was a cultivated field that had been cleared, plowed, and cropped annually for decades prior to sampling while the...

journal_title：Oecologia

authors： Robertson GP,Crum JR,Ellis BG

更新日期：1993-12-01 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：: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：:The chaparral shrub Eriodictyon californicum produces a flavonoid leaf resin with a chemically similar composition to that previously reported for the sympatric shrub Diplacus aurantiacus. We determined the phenology, resin content, and nitrogen content of Eriodictyon leaves and the leaf area lost to herbivores. Nitro...

journal_title：Oecologia

authors： Johnson ND,Chu CC,Ehrlich PR,Mooney HA

更新日期：1984-03-01 00:00:00

abstract：:The relationships between prey utilization and jaw biomechanics were explored in two Caribbean populations (La Parguera and Mona Island) of four trigger-fishes. The volumetric contribution of major prey types and six biomechanical features of the jaws that characterize biting strength were contrasted between populatio...

journal_title：Oecologia

authors： Turingan RG,Wainwright PC,Hensley DA

更新日期：1995-06-01 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：:Pathogens can drive host population dynamics. Chytridiomycosis is a fungal disease of amphibians that is caused by the fungus Batrachochytrium dendrobatidis (Bd). This pathogen has caused declines and extinctions in some host species whereas other host species coexist with Bd without suffering declines. In the early 1...

journal_title：Oecologia

authors： Sapsford SJ,Voordouw MJ,Alford RA,Schwarzkopf L

更新日期：2015-12-01 00:00:00

abstract：:No-take marine reserves (NTMRs) provide hope that local carrying capacity may be partially restored if reserves are protected long enough. How long is long enough? We assess the duration of protection required for populations of large predatory reef fish in marine reserves to attain new steady states. We monitored bio...

journal_title：Oecologia

authors： Russ GR,Alcala AC

更新日期：2010-08-01 00:00:00

abstract：:To maximize fitness, many animals must trade off their need to forage efficiently against their need to avoid predators. We studied such a trade-off in four species of tits (Paridae) in a forest near Oxford, UK. During winter, tits form flocks which increase feeding efficiency and reduce predation risk. These flocks f...

journal_title：Oecologia

authors： Walther B,Gosler A

更新日期：2001-10-01 00:00:00

abstract：:We assessed the performance of two estimators of species richness, the Chao2 and the Coleman 'random placement curve'. Using a dataset of intertidal fish from the Norwegian Skagerrak coast, we found that Chao2 was effective for low sampling intensity, often reaching asymptotic values for few samples, but for higher sa...

journal_title：Oecologia

authors： Lekve K,Ellingsen KE,Lingjaerde OC,Gjøsaeter J,Stenseth NC

更新日期：2005-06-01 00:00:00

abstract：:Leptopterna dolobrata (L.) (Holarctis) and Calocoris roseomaculatus (De Geer) (Palaearctis) are single-brooded in the whole range of their distribution and hibernate in the egg stage. Both species are active only for 21/2 months, while the egg stage lasts over 9 months.The main food plants of Leptopterna are Dactylis ...

journal_title：Oecologia

authors： Braune HJ

更新日期：1971-09-01 00:00:00

abstract：:Release from natural enemies is often cited as a key factor for understanding the success of invasive plant species in novel environments. However, with time invasive species will accumulate native enemies in their invaded range, with factors such as spread distance from the site of introduction, climate and leaf-leve...

journal_title：Oecologia

authors： Tabassum S,Leishman MR

更新日期：2018-02-01 00:00:00

abstract：:The life-cycle of the dominant brackish water ostracod Cyprideis torosa (Jones, 1850) has been studied during 4 years. The species has only one generation anually. Reproduction is fairly similar throughout the years and appears to be tuned in to temperature. The number of adults has one peak every year and can be desc...

journal_title：Oecologia

authors： Heip C

更新日期：1976-09-01 00:00:00

abstract：:The rapid and often remote location of suitable habitats used by migrating organisms is often critical to their subsequent recruitment, fitness and survival, and this includes in the marine environment. However, for the non-feeding post-larval stage of spiny lobsters, effective settlement cues for habitat selection ar...

journal_title：Oecologia

authors： Stanley JA,Hesse J,Hinojosa IA,Jeffs AG

更新日期：2015-07-01 00:00:00

abstract：:The activity behaviour of the common vole, Microtus arvalis was studied in an enclosure during a one-year cycle. The number of voles varied between 2 and 25 specimens. Emergence from burrows, running through pathways and visits at a feeding site were automatically recorded by passage counters which we developed for us...

journal_title：Oecologia

authors： Lehmann U,Sommersberg CW

更新日期：1980-01-01 00:00:00

abstract：:Fluctuations in the abundance of main prey species might shape animal communities, by inducing numerical responses and dietary shifts in predators. Whether numerical responses and dietary shifts differ among individuals of different age and sex has so far gained little attention. These differences could affect how muc...

journal_title：Oecologia

authors： Masoero G,Laaksonen T,Morosinotto C,Korpimäki E

更新日期：2020-03-01 00:00:00

abstract：:It has long been argued that seed dispersal enhances recruitment in tropical trees by allowing offspring to `escape' strong density/distance-dependent attack by insects, pathogens and rodents. Here we examined the effects of canopy openness and parent-offspring distance upon the frequency and timing of Chlorocardium r...

journal_title：Oecologia

authors： Hammond DS,Brown VK,Zagt R

更新日期：1999-05-01 00:00:00

abstract：:Canopy nitrogen (N) is a key factor regulating carbon cycling in forest ecosystems through linkages among foliar N and photosynthesis, decomposition, and N cycling. This analysis examined landscape variation in canopy nitrogen and carbon assimilation in a temperate mixed forest surrounding Harvard Forest in central Ma...

journal_title：Oecologia

authors： Zhou Z,Ollinger SV,Lepine L

更新日期：2018-10-01 00:00:00

abstract：:Anuran amphibians have traditionally been considered suitable model organisms for community ecology studies. In this paper, we review and quantitatively re-analyze the original studies published on dietary relationships among anuran communities worldwide. We re-analyzed 33 independent communities from all continents, ...

journal_title：Oecologia

authors： Vignoli L,Luiselli L

更新日期：2012-06-01 00:00:00

abstract：:The post-dispersal fate of seeds and fruit (diaspores) of three vertebrate-dispersed trees, Crataegus monogyna, Prunus mahaleb and Taxus baccata, was studied in the Andalusian highlands, south-eastern Spain. Exclosures were used to quantify separately the impact of vertebrates and invertebrates on seed removal in rela...

journal_title：Oecologia

authors： Hulme PE

更新日期：1997-06-01 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

authors： Hethcoat MG,King BJ,Castiblanco FF,Ortiz-Sepúlveda CM,Achiardi FCP,Edwards FA,Medina C,Gilroy JJ,Haugaasen T,Edwards DP

更新日期：2019-10-01 00:00:00

abstract：:The partitioning of energy in three species of nematode, Paroigolaimella bernensis, Diplogasteritus nudicapitatus and Rhabditis curvicaudata, from a polysaprobic environment is considered. Temperature was shown to have a profound impact on the rate at which these organisms obtained food resources and on the partitioni...

journal_title：Oecologia

authors： Woombs M,Laybourn-Parry J

更新日期：1985-01-01 00:00:00

abstract：:In many mammals, early survival differs between the sexes, with males proving the more fragile sex ["Fragile male (FM) hypothesis"], especially in sexually dimorphic species where males are the larger sex. Male-biased allocation (MBA) by females may offset this difference. Here, we evaluate support for the FM and MBA ...

journal_title：Oecologia

authors： Kraus C,Mueller B,Meise K,Piedrahita P,Pörschmann U,Trillmich F

更新日期：2013-04-01 00:00:00

abstract：:Snail hosts of different ages constitute different resource environments for larval trematodes because each individual has a particular energy budget and energy allocation pattern at the time of infection. Effects of monomiracidial trematode infections on shell growth, body dry weight and reproductive effort of the sn...

journal_title：Oecologia

authors： Gérard C,Théron A

更新日期：1997-11-01 00:00:00