Adult survival selection in relation to multilocus heterozygosity and body size in a tropical bird species, the Zenaida dove, Zenaida aurita.

abstract：:Ecosystem-wide effects of introduced brown trout (Salmo trutta L.) and native river galaxias (Galaxiaseldoni McDowall) were studied by analysing ecosystem production budgets for two adjacent tributaries of a grassland stream-system in the South Island of New Zealand. One tributary was inhabited by brown trout, the oth...

journal_title：Oecologia

authors： Huryn AD

更新日期：1998-06-01 00:00:00

abstract：:Invasive species-species that have successfully overcome the barriers of transport, introduction, establishment, and spread-are a risk to biodiversity and ecosystem function. Introduction effort is one of the main factors underlying invasion success, but life history traits are also important as they influence populat...

journal_title：Oecologia

authors： van der Marel A,Waterman JM,López-Darias M

更新日期：2021-01-22 00:00:00

abstract：: Fluorogenic substrate analogues (MUF substrates) are very sensitive in detecting hydrolytic enzymes. This method was adapted for the quantitative analysis of extracellular enzymes in snails and other animals. It was then used to determine cellobiase, chitobiase, protease, esterase, phosphatase and lipase in the diges...

journal_title：Oecologia

authors： Brendelberger H

更新日期：1996-12-01 00:00:00

abstract：:Pollination services are compromised by habitat destruction, land-use intensification, pesticides, and introduced species. How pollination services respond to such stressors depends on the capacity of pollinator assemblages to function in the face of environmental disruption. Here, we quantify how pollination services...

journal_title：Oecologia

authors： Nabors AJ,Cen HJ,Hung KJ,Kohn JR,Holway DA

更新日期：2018-01-01 00:00:00

abstract：:Herbivory can reduce plant fitness, and its effects can be increased by competition. Though numerous studies have examined the joint effects of herbivores and competitors on plant performance, these interactive effects are seldom considered in the context of plant invasions. Here, we examined variation in plant perfor...

journal_title：Oecologia

authors： Huang W,Carrillo J,Ding J,Siemann E

更新日期：2012-10-01 00:00:00

abstract：:The density of a plant population is expected to influence reproductive success through changes in the quantity and quality of pollination service, or because both density and reproduction respond to quality of the local environment. We reported previously that seed set in sparse natural populations of Delphinium nutt...

journal_title：Oecologia

authors： Bosch M,Waser NM

更新日期：2001-01-01 00:00:00

abstract：:Theoretical predictions from a simulation model of insect distributions and dispersal among isolated food plants have been tested with data gathered from 13 Cinnabar moth populations. Agreement with the predictions was good. Egg batch size was equal to or slightly larger than the number which could be supported by the...

journal_title：Oecologia

authors： Myers JH,Campbell BJ

更新日期：1976-03-01 00:00:00

abstract：:In this paper we test the influence of temperature and interference competition by dominant species on the foraging of subordinate species in Mediterranean ant communities. We have analyzed the changes in resource use by subordinate species in plots with different abundances of dominant ants, and in different periods ...

journal_title：Oecologia

authors： Cerdá X,Retana J,Manzaneda A

更新日期：1998-12-01 00:00:00

abstract：:Although an increase in competition is a common cost associated with intraspecific crowding, spatial aggregation across food-limited resource patches is a widespread phenomenon in many insect communities. Because intraspecific aggregation of competing insect larvae across, e.show $132#g. fruits, dung, mushrooms etc., ...

journal_title：Oecologia

authors： Rohlfs M,Hoffmeister TS

更新日期：2004-08-01 00:00:00

abstract：:Effects of habitat fragmentation on species diversity and herbivore-parasitoid interactions were analyzed using the insect community of seed feeders and their parasitoids in the pods of the bush vetch (Vicia sepium L.). Field studies were carried out on 18 old meadows differing in area and isolation. The area of these...

journal_title：Oecologia

authors： Kruess A,Tscharntke T

更新日期：2000-01-01 00:00:00

abstract：:Damaged cotton plants in which reproductive organs were manually removed to simulate shedding induced by Helicoverpa spp. (Lepidoptera) were compared with undamaged controls grown under contrasting availability of resources. Plant growth and partitioning were analysed and fruit mass was taken as a measure of compensat...

journal_title：Oecologia

authors： Sadras VO

更新日期：1996-06-01 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：:During the winter in greenhouse culture, Frerea indica(Asclepiadaceae) is a leafless stem succulent resembling the other members of the Stapelieae subfamily. However, in spring it produces leaves which persist during the summer period. CO2 exchange measurements were carried out with Frerea indica at its different seas...

journal_title：Oecologia

authors： Lange OL,Zuber M

更新日期：1977-01-01 00:00:00

abstract：:The aim of this study was to test if females of the aphid hyperparasitoid Dendrocerus carpenteri (Curtis produce patch marks. We tested if these marks inform a foraging female of the identity of the producer of the mark (the female herself or a conspecific female) and on the producer's success or failure in finding ho...

journal_title：Oecologia

authors： Höller C,Hörmann R

更新日期：1993-05-01 00:00:00

abstract：:We tested the deme-formation hypothesis experimentally with four populations of leaf-galling grape phylloxera, Daktulosphaira vitifoliae, and its host, canyon grape (Vitis arizonica). An experiment designed to examine preference and performance showed that phylloxera populations did not significantly prefer their orig...

journal_title：Oecologia

authors： Kimberling DN,Price PW

更新日期：1996-09-01 00:00:00

abstract：:Arafura filesnakes (Acrochordus arafurae) are large (up to 2.5 m, 5 kg) aquatic nonvenomous snakes that feed entirely on fishes. A 10-year field study in the Australian wet-dry tropics revealed strong correlations between rainfall patterns, fish abundance, and snake population dynamics. All of these characteristics sh...

journal_title：Oecologia

authors： Madsen T,Shine R

更新日期：2000-08-01 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：:Plant physiological strategies of carbon (C) and nitrogen (N) uptake and metabolism are often regarded as outcomes of environmental selection. This is likely true, but the role of evolutionary history may also be important in shaping patterns of functional diversity. Here, we used leaf C and N stable isotope ratios (δ...

journal_title：Oecologia

authors： Goud EM,Sparks JP

更新日期：2018-08-01 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

authors： Jonasson S,Havström M,Jensen M,Callaghan TV

更新日期：1993-08-01 00:00:00

abstract：:Chronic atmospheric N deposition has modified relative N availability, altering the biogeochemical cycles of forests and the stoichiometry of nutrients in trees, inducing P limitation, and modifying the N:P ratios of plant biomass. This study examines how the variation in the foliar stoichiometry of Abies pinsapo acro...

journal_title：Oecologia

authors： Blanes MC,Viñegla B,Merino J,Carreira JA

更新日期：2013-04-01 00:00:00

abstract：:Populations of invasive species tend to have fewer parasites in their introduced ranges than in their native ranges and are also thought to have fewer parasites than native prey. This 'release' from parasites has unstudied implications for native predators feeding on exotic prey. In particular, shifts from native to e...

journal_title：Oecologia

authors： Locke SA,Bulté G,Marcogliese DJ,Forbes MR

更新日期：2014-05-01 00:00:00

abstract：:Alpine Trifolium species have high rates of symbiotic N2-fixation which may influence the abundance and growth of plant species growing near them. The potential for facilitative effects on plant abundance and growth in dry meadow alpine tundra of Niwot Ridge, Colo., characterized by low resource availability, was inve...

journal_title：Oecologia

authors： Thomas BD,Bowman WD

更新日期：1998-06-01 00:00:00

abstract：:Among 13 tropical tree species on Barro Colorado Island, species with high seedling mortality rates during the first year in shade had higher reltive growth rates (RGR) from germination to 2 months in both sun (23% full sun) and shade [2%, with and without lowered red: far red (R:FR) ratio] than shade tolerant species...

journal_title：Oecologia

authors： Kitajima K

更新日期：1994-08-01 00:00:00

abstract：:Invasion of non-native annuals across the Intermountain West is causing a widespread transition from perennial sagebrush communities to fire-prone annual herbaceous communities and grasslands. To determine how this invasion affects ecosystem function, carbon and water fluxes were quantified in three, paired sagebrush ...

journal_title：Oecologia

authors： Prater MR,Obrist D,Arnone JA 3rd,DeLucia EH

更新日期：2006-01-01 00:00:00

abstract：:Climate plays a fundamental role in limiting the range of a species, is a key factor in the dynamics of large herbivores, and is thought to be involved in declines of moose populations in recent decades. We examined effects of climate and growing-season phenology on recruitment (8-9 months old) of young Shiras moose (...

journal_title：Oecologia

authors： Monteith KL,Klaver RW,Hersey KR,Holland AA,Thomas TP,Kauffman MJ

更新日期：2015-08-01 00:00:00

abstract：:Seed dispersal is an important ecosystem function, but it is contentious how structural and functional diversity of plant and bird communities are associated with seed-dispersal functions. We used structural equation models to test how structural (i.e., abundance, species richness) and functional diversity (i.e., func...

journal_title：Oecologia

authors： Quitián M,Santillán V,Espinosa CI,Homeier J,Böhning-Gaese K,Schleuning M,Neuschulz EL

更新日期：2019-02-01 00:00:00

abstract：:Urbanization is a major challenge for biodiversity conservation, yet the evolutionary processes taking place in urbanized areas remain poorly known. Human activities in cities set new selective forces in motion which need to be investigated to predict the evolutionary responses of animal species living in urban areas....

journal_title：Oecologia

authors： Jacquin L,Récapet C,Prévot-Julliard AC,Leboucher G,Lenouvel P,Erin N,Corbel H,Frantz A,Gasparini J

更新日期：2013-11-01 00:00:00

abstract：:1. The locomotor activity of European salamanders differs from species to species. At all stages of development Triturus vulgaris is more light-active, Salamandra salamandra is dark-active, while Triturus alpestris and cristatus occupy an intermediate position. 2. The activity of the larvae is high but the rhythm is n...

journal_title：Oecologia

authors： Himstedt W

更新日期：1971-06-01 00:00:00

abstract：:In highly dynamic and unpredictable environments such as the Southern Ocean, species that have evolved behaviors that reduce the effects of intra-specific competition may have a selective advantage. This is particularly true when juveniles face disadvantages when foraging due to morphological or physiological limitati...

journal_title：Oecologia

authors： Field IC,Bradshaw CJ,Burton HR,Sumner MD,Hindell MA

更新日期：2005-01-01 00:00:00

abstract：:Southern grasshopper mice (Onychomys torridus) were allowed to junt buried mealworms in a laboratory arena. The prey were arranged in two patterns, one aggregated and one relatively dispersed. Mice captured more prey from the dispersed treatment in the 2 h experiment, a result that can be attributed to both the greate...

journal_title：Oecologia

authors： Taylor RJ

更新日期：1977-09-01 00:00:00