Anpassung des Defäkationsverhaltens der Larven von Aleochara curtula Goeze an die raubparasitische Lebensweise im Calliphora-Puparium.

abstract：:The frequency of extreme warm years is increasing across the majority of the planet. Shifts in plant phenology in response to extreme years can influence plant survival, productivity, and synchrony with pollinators/herbivores. Despite extensive work on plant phenological responses to climate change, little is known ab...

journal_title：Oecologia

authors： Carter JM,Orive ME,Gerhart LM,Stern JH,Marchin RM,Nagel J,Ward JK

更新日期：2017-04-01 00:00:00

abstract：:This study investigates the demography and interspecific interactions of 6 Heterohyrax brucei and 4 Procavia johnstoni populations, which inhabited 6 kopjes (rock outcrops) in the Serengeti National Park, Tanzania over a period of 17 years. On three kopjes (H1, O2 and PH2) both species lived sympatrically, while on th...

journal_title：Oecologia

authors： Hoeck HN

更新日期：1989-05-01 00:00:00

abstract：:Human disturbances to ecosystems have created challenges to populations worldwide, forcing them to respond phenotypically in ways that increase their fitness under current conditions. One approach to examining population responses to disturbance in species with complex life histories is to study species that exhibit s...

journal_title：Oecologia

authors： Hegg JC,Kennedy BP,Chittaro PM,Zabel RW

更新日期：2013-08-01 00:00:00

abstract：:An empirical model for predicting net photosynthesis (P N ) and dark respiration (R D ) in the field was developed and tested for Bouteloua gracilis (H.B.K.) Lag., the dominant C4 grass of the North American shortgrass prairie. P N is predicted as a function of soil water potential, canopy air temperature, irradiance,...

journal_title：Oecologia

authors： Detling JK,Parton WJ,Hunt HW

更新日期：1978-01-01 00:00:00

abstract：:This study examines the impacts of woody, N2-fixing invasive Acacia spp. on the patterns of nutrient cycling in two invaded ecosystems of differing nutrient status in the Cape floristic region. Patterns of soil nutrient mineralization were measured by a field incubation method while the significance of the fixation pr...

journal_title：Oecologia

authors： Stock WD,Wienand KT,Baker AC

更新日期：1995-03-01 00:00:00

abstract：:Recent research has shown that many mutualistic communities display non-random structures. While our understanding of the structural properties of mutualistic communities continues to improve, we know little of the biological variables resulting in them. Mutualistic communities include those formed between ants and ex...

journal_title：Oecologia

authors： Chamberlain SA,Kilpatrick JR,Holland JN

更新日期：2010-11-01 00:00:00

abstract：:Studies relating reproduction to food availability are usually restricted to food quantity, but ignore food quality and the effects of habitat structure on obtaining the food. This is particularly true for insectivorous birds. In this study we relate measures of reproductive success, time of reproduction and nestling ...

journal_title：Oecologia

authors： Brodmann PA,Reyer HU,Bollmann K,Schläpfer AR,Rauter C

更新日期：1997-01-01 00:00:00

abstract：:Seedling recruitment is a critical driver of population dynamics and community assembly, yet we know little about functional traits that define different recruitment strategies. For the first time, we examined whether trait relatedness across germination and seedling stages allows the identification of general recruit...

journal_title：Oecologia

authors： Larson JE,Sheley RL,Hardegree SP,Doescher PS,James JJ

更新日期：2016-05-01 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：:The duration times of the eggs, nauplii and copepodites of Cyclops vicinus and Eudiaptomus gracilis were obtained, by experiment, at 5, 10, 15 and 20°C. In contrast with previously published work on copepod development, the ovigerous females, used in the cultures at these temperatures, were removed from a water storag...

journal_title：Oecologia

authors： Munro IG

更新日期：1974-12-01 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：:Female ornaments are present in many species, and it is more and more accepted that sexual or social selection may lead to their evolution. By contrast, the information conveyed by female ornaments is less well understood. Here, we investigated the links between female ornaments and maternal effects. In birds, an impo...

journal_title：Oecologia

authors： Midamegbe A,Grégoire A,Staszewski V,Perret P,Lambrechts MM,Boulinier T,Doutrelant C

更新日期：2013-10-01 00:00:00

abstract：:Rodents of the family Heteromyidae are proficient gatherers and hoarders of seeds. A major component of their adaptive specialization for harvesting and transporting seeds is their spacious, fur-lined cheek pouches. Precise measurements of cheek pouch capacities are essential if ecologists are to understand the foragi...

journal_title：Oecologia

authors： Vander Wall SB,Longland WS,Pyare S,Veech JA

更新日期：1997-12-01 00:00:00

abstract：:In this study we assessed the effectiveness of rodents as dispersers of Quercus ilex in a patchy landscape in southeastern Spain. We experimentally followed the fates of 3,200 marked and weighed acorns from dispersal through the time of seedling emergence over three years. Rodents handled about 99% of acorns, and disp...

journal_title：Oecologia

authors： Gómez JM,Puerta-Piñero C,Schupp EW

更新日期：2008-03-01 00:00:00

abstract：:Humans are rapidly altering thermal landscapes, so a central challenge to organismal ecologists is to better understand the thermal niches of ectotherms. However, there is much disagreement over how we should go about this. Some ecologists assume that a statistical model of abundance as a function of habitat temperatu...

journal_title：Oecologia

authors： Stoffels RJ,Richardson AJ,Vogel MT,Coates SP,Müller WJ

更新日期：2016-01-01 00:00:00

abstract：:We reared larvae of three generalist insect species on plants occurring in their habitats. Individuals of each species were kept either on mixed diets, or on each plant species separately. We measured food plant preference in the mixed-diet group and compared insect performance on single plants to the performance on t...

journal_title：Oecologia

authors： Hägele BF,Rowell-Rahier M

更新日期：1999-06-01 00:00:00

abstract：: Black and white spruce (Picea mariana and P. glauca) exhibit a striking micro-geographic distribution pattern at the southern edge of the boreal forest. Black spruce grows in flooded nutrient-poor muskegs, while white spruce is found primarily on drier upland sites, and the two rarely form mixed stands. In an attempt...

journal_title：Oecologia

authors： Patterson TB,Guy RD,Dang QL

更新日期：1997-04-01 00:00:00

abstract：:The patterns of flower visitation by lizards (Podarcis lilfordi, Lacertidae) and insects (mainly flies, bees and wasps) on the shrub Euphorbia dendroides, were studied in the island of Cabrera (Balearic Islands) during the flowering seasons of 1995 and 1996. Lizards act as true pollinators of the plant, moving large q...

journal_title：Oecologia

authors： Traveset A,Sáez E

更新日期：1997-07-01 00:00:00

abstract：:We examined the effects of intraguild predation (IGP) and interference competition on an endangered dragonfly, Aeshna viridis Eversm. (Odonata: Anisoptera). A. viridis is rare in Europe due to the decrease in suitable habitats harboring the macrophyte Stratiotes aloides L. Stratiotes plants are the principal ovipositi...

journal_title：Oecologia

authors： Suutari E,Rantala MJ,Salmela J,Suhonen J

更新日期：2004-06-01 00:00:00

abstract：:Induction of plant defence against herbivores may include the attraction by volatile infochemicals of natural enemies of the herbivore. The emitted volatiles that mediate this attraction may also affect the behaviour of the herbivore itself. In this paper we investigate the response of the herbivorous spider miteTetra...

journal_title：Oecologia

authors： Dicke M,Dijkman H

更新日期：1992-10-01 00:00:00

abstract：:Global atmospheric CO2 is increasing at a rate of 1.5-2 ppm per year and is predicted to double by the end of the next century. Understanding how terrestrial ecosystems will respond in this changing environment is an important goal of current research. Here we present results from a field study of elevated CO2 in a Ca...

journal_title：Oecologia

authors： Jackson RB,Sala OE,Field CB,Mooney HA

更新日期：1994-08-01 00:00:00

abstract：:The development of the ant communities and their foraging dynamics were studied in two annual agroecosystems of the Mexican tropical lowlands: a "forest milpa" of corn, beans, and squash made by cutting and buring 40-year-old forest, and a "field milpa" of corn, beans, and squash made by plowing 1-year-old second grow...

journal_title：Oecologia

authors： Risch SJ,Carroll CR

更新日期：1982-10-01 00:00:00

abstract：:Variation in body size (weight) is examined across the order Carnivora in relation to taxonomy (phylogeny), latitude, habitat, zonation, activity cycle, diet, prey size, and prey diversity. Significant differences in body weight are observed with respect to family membership. Some of these differences may be explained...

journal_title：Oecologia

authors： Gittleman JL

更新日期：1985-12-01 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：:From 1997 to 1999, we monitored the reproductive success of individual rufous-crowned sparrows (Aimophila ruficeps) in coastal sage scrub habitat of southern California, USA. Annual reproductive output of this ground-nesting species varied strongly with annual variation in rainfall, attributed to the El Niño-Southern ...

journal_title：Oecologia

authors： Morrison SA,Bolger DT

更新日期：2002-11-01 00:00:00

abstract：:Principal and reduced major axes, and Bulmer's (1975) tests have been suggested as methods for detecting the presence of density dependence in a series of population censuses that are unsuitable for analysis by alternative means e.g. by k-factor analysis. These alternative methods are tested using census data, some of...

journal_title：Oecologia

authors： Gaston KJ,Lawton JH

更新日期：1987-12-01 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：:As the impact of anthropogenic activities intensifies worldwide, an increasing proportion of landscape is converted to early successional stages every year. To understand and anticipate the global effects of the human footprint on wildlife, assessing short-term changes in animal populations in response to disturbance ...

journal_title：Oecologia

authors： Martineau J,Pothier D,Fortin D

更新日期：2016-07-01 00:00:00

abstract：:We examined the functional response and foraging behavior of young moose (Alces alces) and white-tailed deer (Odocoileus virginianus) relative to animal size and the size and distribution of browse patches. The animals were offered one, three, or nine stems of dormant red maple (Acer rubrum) in hand-assembled patches ...

journal_title：Oecologia

authors： Shipley LA,Spalinger DE

更新日期：1995-09-01 00:00:00

abstract：:The Alaskan tussock tundra is a strongly nutrient-limited ecosystem, where almost all vascular plant species are mycorrhizal. We established a long-term removal experiment to document effects of arctic plant species on ecto- and ericoid mycorrhizal fungi and to investigate whether species interactions and/or nutrient ...

journal_title：Oecologia

authors： Urcelay C,Bret-Harte MS,Díaz S,Chapin FS 3rd

更新日期：2003-11-01 00:00:00