The effect of alternative mating tactics on the fertilization success of a hermaphroditic seabass.

abstract：:European data from 15 long-term censuses of breeding land bird communities were analysed in order to measure community stability. Stability was here operationally defined as year-to-year persistence of community structure (total density, number of species, diversity, evenness of the species-abundance distribution, spe...

journal_title：Oecologia

authors： Järvinen O

更新日期：1979-01-01 00:00:00

abstract：:The insect fauna of 80 day-old plots of corn and sweet potato monocultures and dicultures in Costa Rica were compared using sweep sampling. Six hundred sweeps were taken in each of the three habitats. There were 15% more total species in the diculture than either monoculture but approximately the same total number of ...

journal_title：Oecologia

authors： Risch SJ

更新日期：1979-09-01 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

authors： Antolin MF,Strong DR

更新日期：1987-09-01 00:00:00

abstract：:Pycnogonum litorale has a terminal anecdysis. After attaining maturity it does not moult again. Maturity can be attained at different body size, the female usually being larger than the male.The pre-adult instar can also be entered at various body sizes. The duration of the pre-adult instar depends upon body size: At ...

journal_title：Oecologia

authors： Schmidt HW

更新日期：1971-09-01 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

authors： Grüm L

更新日期：1984-12-01 00:00:00

abstract：:Canopy structure and tree species diversity, shaped by succession, disturbance, and community composition, are linked to numerous ecosystem functions, including net primary production (NPP). Understanding of how ecosystem structural metrics are interrelated and mechanistically link to NPP, however, is incomplete. We c...

journal_title：Oecologia

authors： Scheuermann CM,Nave LE,Fahey RT,Nadelhoffer KJ,Gough CM

更新日期：2018-10-01 00:00:00

abstract：:Interspecific relationships such as mutualism and parasitism are major drivers of biodiversity. Because such interactions often comprise more than two species, ecological studies increasingly focus on complex multispecies systems. However, the spatial heterogeneity of multi-species interactions is often poorly underst...

journal_title：Oecologia

authors： Schöner CR,Schöner MG,Kerth G,Grafe TU

更新日期：2013-09-01 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：: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：:The goal of this study was to evaluate the contribution of oak trees (Quercus spp.) and their associated mycorrhizal fungi to total community soil respiration in a deciduous forest (Black Rock Forest) and to explore the partitioning of autotrophic and heterotrophic respiration. Trees on twelve 75 × 75-m plots were gir...

journal_title：Oecologia

authors： Levy-Varon JH,Schuster WS,Griffin KL

更新日期：2012-05-01 00:00:00

abstract：:The effects of time of the day and frequency of application and of purity of artificially deposited pollen loads on fruiting and seed set were studied in Rhinanthus angustifolius (diurnally visited by bumblebees) and Viscaria vulgaris (diurnally visited by bumblebees, nocturnally by sphingid moths).Time of the day did...

journal_title：Oecologia

authors： Kwak MM,Jennersten O

更新日期：1986-11-01 00:00:00

abstract：:We analysed the spatial and temporal pattern of egg laying in great spotted cuckoo females using microsatellite typing to determine parentage of the eggs and nestlings found in host (magpie) nests. The results showed that there were no exclusive laying territories in the study area. Cases of multiparasitism could be d...

journal_title：Oecologia

authors： Martínez JG,Soler JJ,Soler M,Burke T

更新日期：1998-11-01 00:00:00

abstract：:It is widely recognized that pollinators vary in their effectiveness in pollination mutualisms, due both to differences in flower-pollinator morphological fit as well as pollinator behaviour. However, pollination webs typically treat all interactions as equal, and we contend that this method may provide misleading res...

journal_title：Oecologia

authors： Sánchez-Lafuente AM,Rodríguez-Gironés MA,Parra R

更新日期：2012-01-01 00:00:00

abstract：:Traditionally it has been thought that most boreal forest communities lack a significant input of biologically fixed nitrogen. Recent discoveries of nitrogen fixation by cyanobacteria associated with mosses have resulted in a re-evaluation of this view. While it is recognized that rates of nitrogen fixation in mosses ...

journal_title：Oecologia

authors： Markham JH

更新日期：2009-08-01 00:00:00

abstract：:Foragers of the leafcutting ant, Atta cephalotes L. (Formicidae, Attini) seldom or never attack many of the plant species available to them in nature. In the semideciduous forests of lowland Guanacaste Province, Costa Rica, one of the tree species seldom cut is Hymenaea courbaril L. (Leguminosae, Caesalpinioideae). We...

journal_title：Oecologia

authors： Hubbell SP,Wiemer DF,Adejare A

更新日期：1983-12-01 00:00:00

abstract：:Masting is the intermittent production of large seed crops by a population of plants. Two main hypotheses have been proposed to explain masting. Variations in seed crop may result from stochastic climate factors (temperature, rainfall, etc.), and/or masting may be a plant evolutionary strategy to avoid specific seed p...

journal_title：Oecologia

authors： Poncet BN,Garat P,Manel S,Bru N,Sachet JM,Roques A,Despres L

更新日期：2009-03-01 00:00:00

abstract：:Recent discussions on scaling issues in ecology have emphasized that processes acting at a wide range of spatial and temporal scales influence ecosystems and thus there is no appropriate single scale at which ecological processes should be studied. This may be particularly true for environmental disturbances (e.g. El ...

journal_title：Oecologia

authors： Edwards MS

更新日期：2004-02-01 00:00:00

abstract：:The neotropical shrub Pentagonia macrophylla Benth. (Rubiaceae) has protandrous two-day flowers. Synchronous development among flowers on a single individual results in sequential phenotypic unisexuality: the entire plant alternates gender from day to day. Pistillate flowers produce more nectar than staminate flowers ...

journal_title：Oecologia

authors： McDade LA

更新日期：1986-01-01 00:00:00

abstract：:Successful reproduction in a seasonal environment can be accomplished with resources that are stored before use ("capital resources") or resources that are used immediately ("income resources"). Research examining capital versus income resource usage during reproduction has primarily focused on assigning species to po...

journal_title：Oecologia

authors： Fletcher QE,Landry-Cuerrier M,Boutin S,McAdam AG,Speakman JR,Humphries MM

更新日期：2013-12-01 00:00:00

abstract：:Stable carbon isotope techniques were employed to study the food habits of the termite Macrotermes michaelseni (Isoptera: Termitidae) in a semiarid savanna habitat in Kenya. At Kajiado this species utilized approximately 70% herbaceous vegetation (mostly grass) and 30% woody vegetation, while at Ruiru approximately 64...

journal_title：Oecologia

authors： Boutton TW,Arshad MA,Tieszen LL

更新日期：1983-08-01 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：:Carbohydrate, lipid, and protein compositions are stoichiometrically related to organic CHN (carbon, hydrogen, nitrogen) contents. Elemental CHN analyses of total biomass and ash, therefore, provide a basis for the calculation of proximate biochemical composition and bomb caloric value. The classical nitrogen to prote...

journal_title：Oecologia

authors： Gnaiger E,Bitterlich G

更新日期：1984-06-01 00:00:00

abstract：:Two methods of extraction were used in the estimation of snail population densities in woodland litter. The time-consuming-Vágvölgyi technique proved to be 6.25 times more efficient than infra-red heat extraction but it was shown that the results obtained by the latter method could be easily corrected to conform with ...

journal_title：Oecologia

authors： Phillipson J,Abel R

更新日期：1983-03-01 00:00:00

abstract：:Rates of algal production were measured at 6 rocky intertidal sites on the southwestern Cape coast, South Africa, where populations of the limpet Patella granularis occur. Rates of algal production and limpet mortality were recorded at each site and both factors affected limpet reproductive fitness. Limpet growth rate...

journal_title：Oecologia

authors： Bosman AL,Hockey PA

更新日期：1988-04-01 00:00:00

abstract：:Morphological relationships change with overall body size and body size often varies among populations. Therefore, quantitative analyses of individual traits from organisms in different populations or environments (e.g., in studies of phenotypic plasticity) often adjust for differences in body size to isolate changes ...

journal_title：Oecologia

authors： McCoy MW,Bolker BM,Osenberg CW,Miner BG,Vonesh JR

更新日期：2006-07-01 00:00:00

abstract：:Intensive harvesting of native eucalypt forests is carried out in the Eden area in the south east coastal region of New South Wales, Australia. Soil nutrient capital and nutrient removals in forest harvesting were estimated together with potential impacts of these removals on the nutrient capital balance. Soils were a...

journal_title：Oecologia

authors： Turner J,Lambert MJ

更新日期：1986-08-01 00:00:00

abstract：:In order to determine the influence of the hydrogen-ion concentration on the damage exerted to lichens by sulfur dioxide gas, thalli of the species Hypogymnia physodes and Xanthoria parietina were submerged in buffer solutions of pH 2 to pH 8 and subsequently exposed to SO2 gas. Net photosynthesis was employed as a cr...

journal_title：Oecologia

authors： Türk R,Wirth V

更新日期：1975-12-01 00:00:00

abstract：:A widely cited benefit of predator diversity is greater suppression of insect herbivores, with corresponding increases in plant biomass. In the context of a vector-borne pathogen system, predator species richness may also influence plant disease risk via the direct effects of predators on the abundance and behavior of...

journal_title：Oecologia

authors： Long EY,Finke DL

更新日期：2015-04-01 00:00:00

abstract：:1. The uptake of heavy metals via the alimentary tract can be an important factor for the metal budget of fish. 2. Concepts such as biomagnification, bioaccumulation, biotransference, or concentration factors, convey little information about the real threat originating from heavy metals in an aquatic food chain. 3. In...

journal_title：Oecologia

authors： Dallinger R,Prosi F,Segner H,Back H

更新日期：1987-08-01 00:00:00

abstract：:Functional diversity has been identified as a key to understanding ecosystem and community functioning. However, due to the lack of a sound definition its nature and measurement are still poorly understood. In the same way that species diversity can be split into species richness and species evenness, so functional di...

journal_title：Oecologia

authors： Mouillot D,Mason WH,Dumay O,Wilson JB

更新日期：2005-01-01 00:00:00