Should I stay or should I go? Fitness costs and benefits of prolonged parent-offspring and sibling-sibling associations in an Arctic-nesting goose population.

abstract：:Calcium is an essential micronutrient for birds during egg formation and for skeletal development in nestlings. Habitat level studies suggest that birds breeding in low-calcium areas may be limited in the size or number of eggs they lay and in the quality of their nestlings. However, as birds forage non-randomly and m...

journal_title：Oecologia

authors： Wilkin TA,Gosler AG,Garant D,Reynolds SJ,Sheldon BC

更新日期：2009-03-01 00:00:00

abstract：:The ecological and evolutionary processes that interact to shape community structure are poorly studied in the largest environment on earth, the deep sea. Phylogenetic data and morphological traits of octocorals were coupled with environmental factors to test hypotheses of community assembly in the deep (250-2500 m) G...

journal_title：Oecologia

authors： Quattrini AM,Gómez CE,Cordes EE

更新日期：2017-01-01 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：:Optimal diet theory often fails to predict a forager's diet choice when prey are mobile. Because they escape or defend themselves, mobile prey are likely to increase the forager's handling time, thereby decreasing its fitness gain rate. Many animals have been shown to select their prey so as to maximize either their f...

journal_title：Oecologia

authors： Barrette M,Wu GM,Brodeur J,Giraldeau LA,Boivin G

更新日期：2009-01-01 00:00:00

abstract：:1. The defecation behavior of the parasitoid larvae of Aleochara curtula in the Calliphora puparium was described. After occupation of the puparium the first-instar larva begins to defecate. With these excrements the larva closes the entry hole. Afterwards the first-instar larva as well as later the second-instar larv...

journal_title：Oecologia

authors： Fuldner D,Pfenning R

更新日期：1973-06-01 00:00:00

abstract：:Factors influencing the consumption of algae and the rate of feeding by the larvae of Heterotrissocladius changi Saether and Polypedilum nebeculosum (Meigen) (Chironomidae: Diptera) were determined from collections made between July 1975 and May 1977 in Yellowknife Bay, situated in the Canadian subarctic. Although bot...

journal_title：Oecologia

authors： Moore JW

更新日期：1979-01-01 00:00:00

abstract：:Relationships between leaf traits and the gap dependence for regeneration, and ontogenetic changes therein, were investigated in juvenile and adult tropical rainforest tree species. The juveniles of the 17 species included in the study were grown in high light, similar to the exposed crowns of the adult trees. The tra...

journal_title：Oecologia

authors： Houter NC,Pons TL

更新日期：2012-05-01 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：: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：:In five California evergreen trees and shrubs cooccurring in this study but most common in habitats of different moisture availability, leaf nitrogen was a major determinant of photosynthetic capacity. Within each species, stomatal conductance was highly correlated with photosynthetic capacity, resulting in little var...

journal_title：Oecologia

authors： Field C,Merino J,Mooney HA

更新日期：1983-12-01 00:00:00

abstract：:The epiphytic orchid, Dimerandra emarginata, occurs in habitats characterized by high light intensities and very variable water supply. Long-term observations of the water status indicate that this species experienced at least moderate water stress over most of the year. Well-watered, it showed high rates of net CO2 u...

journal_title：Oecologia

authors： Zotz G,Tyree MT

更新日期：1996-07-01 00:00:00

abstract：:The enemies hypothesis states that reduced insect herbivory in mixed-species stands can be attributed to more effective top-down control by predators with increasing plant diversity. Although evidence for this mechanism exists for invertebrate predators, studies on avian predation are comparatively rare and have not e...

journal_title：Oecologia

authors： Muiruri EW,Rainio K,Koricheva J

更新日期：2016-03-01 00:00:00

abstract：:Phenolics in marine brown algae have been thought to follow a latitudinal gradient with high phenolic species in high latitudes and low phenolic species in low latitudes. However, tropical brown algae from the western Caribbean have been shown to be high in phlorotannin concentration, indicating that latitude alone is...

journal_title：Oecologia

authors： Targett NM,Boettcher AA,Targett TE,Vrolijk NH

更新日期：1995-08-01 00:00:00

abstract：:To estimate the optimality of brood size, it is essential to study the effects of brood size manipulation on offspring survival and reproductive success. Moreover, testing the generality of the hypothesis of reproductive costs requires experimental data from a diversity of organisms. Here I present data on the growth,...

journal_title：Oecologia

authors： Koskela E

更新日期：1998-07-01 00:00:00

abstract：:Plant species and functionally related species groups from arid and semi-arid habitats vary in their capacity to take up summer precipitation, acquire nitrogen quickly after summer precipitation, and subsequently respond with ecophysiological changes (e.g. water and nitrogen relations, gas exchange). For species that ...

journal_title：Oecologia

authors： Snyder KA,Donovan LA,James JJ,Tiller RL,Richards JH

更新日期：2004-10-01 00:00:00

abstract：:Reproduction is a demanding activity for animals, since they must produce, and in some cases protect and provision, their young. It is often overlooked that demands of reproduction may also be exacerbated by exposure to contaminants. In this study, we make use of an exceptional long-term dataset to perform a cross-sec...

journal_title：Oecologia

authors： Costantini D,Meillère A,Carravieri A,Lecomte V,Sorci G,Faivre B,Weimerskirch H,Bustamante P,Labadie P,Budzinski H,Chastel O

更新日期：2014-08-01 00:00:00

abstract：:Both phenotypic and genetic quality can influence the survival of individuals through time, although their relative influences are rarely addressed simultaneously. Here we used capture-mark-recapture modelling to assess the influence of both multilocus heterozygosity (MLH) and body size on apparent adult survival in a...

journal_title：Oecologia

authors： Cézilly F,Quinard A,Motreuil S,Pradel R

更新日期：2016-01-01 00:00:00

abstract：:Interrelationships between morphology, microhabitat, water relations, and photosynthesis of a xeric fern, Notholaena parryi D.C. Eat. (Pteridaceae), were examined in the western Colorado desert. In its typical microhabitat rock outcroppings protected N. parryi from direct sunlight and moderated the diurnal variations ...

journal_title：Oecologia

authors： Nobel PS

更新日期：1978-01-01 00:00:00

abstract：:Severe droughts may alter the reproductive phenology of tropical tree species, but our understanding of these effects has been hampered by confounded variation in drought, light and other factors during natural drought events. We used a large-scale experimental reduction of throughfall in an eastern-central Amazon for...

journal_title：Oecologia

authors： Brando P,Ray D,Nepstad D,Cardinot G,Curran LM,Oliveira R

更新日期：2006-11-01 00:00:00

abstract：:Herbivore-induced defences appear ubiquitous across most biomes and habitats. Yet the direct correlation between induced changes in host plant chemistry and the population dynamics of the herbivore remain untested in many systems. In plant-herbivore interactions in the terrestrial environment, indirect or tritrophic i...

journal_title：Oecologia

authors： Coleman RA,Ramchunder SJ,Davis KM,Moody AJ,Foggo A

更新日期：2007-03-01 00:00:00

abstract：:The effects of floral morphology on rates of pollen removal and deposition by different pollinators in generalist plant species are not well known. We studied pollination dynamics in wild radish, Raphanus raphanistrum, a plant visited by four groups of pollinators: honey bees, small native bees, butterflies, and syrph...

journal_title：Oecologia

authors： Conner JK,Davis R,Rush S

更新日期：1995-10-01 00:00:00

abstract：:Seven North American moss species responded differentially to fumigations with sulfur dioxide ranging from 0.5 to 4.0 ppm. Leucobryum glaucum and Dicranum scoparium were the most sensitive species; Dicranella heterophylla, Polytrichum ohioense and Pottia truncata, the most resistant. The results of fumigations with 0....

journal_title：Oecologia

authors： Nash TH 3rd,Nash EH

更新日期：1974-09-01 00:00:00

abstract：:Stand thinning across different soil drainage types was used to test the ecophysiological basis for the control of foliar monoterpenes in current-year foliage of balsam trees [Abies balsamea (L.) P. Mill.] the year following treatment. Photosynthetic capacity (A max) was greater on mesic sites than on sub-hygric and h...

journal_title：Oecologia

authors： Lamontagne M,Bauce É,Margolis H

更新日期：2002-01-01 00:00:00

abstract：:We examined the relationship between size variability and the distribution of functional gender in stands of the monoecious, wind-pollinated annual Ambrosia artemisiifolia. Populations of 60 individuals were grown in the greenhouse at a density of 372 m-2 and at two nutrient levels. Among the surviving plants, after s...

journal_title：Oecologia

authors： Ackerly DD,Jasieński M

更新日期：1990-04-01 00:00:00

abstract：:Predicted changes in soil water availability regimes with climate and land-use change will impact the community of functionally important soil organisms, such as macro-detritivores. Identifying and quantifying the functional traits that underlie interspecific differences in desiccation resistance will enhance our abil...

journal_title：Oecologia

authors： Dias AT,Krab EJ,Mariën J,Zimmer M,Cornelissen JH,Ellers J,Wardle DA,Berg MP

更新日期：2013-07-01 00:00:00

abstract：:Size thresholds commonly underlie the induction of alternative morphological states. However, the respective importance of absolute and relative size to such thresholds remains uncertain. If absolute size governs expression, morph frequency should differ among environments that influence absolute sizes (e.g. resources...

journal_title：Oecologia

authors： Moore MP,Pechmann JHK,Whiteman HH

更新日期：2020-08-01 00:00:00

abstract：:The objective of this study was to separate the effects of plant biomass and growth rate on vegetative reproduction in two species of cat-tail, Typha latifolia and T. angustifolia. Replicate clones of both species were grown under conditions of 100%, 42%, 24%, and 9% full sunlight with harvests at 41, 70, and 91 days ...

journal_title：Oecologia

authors： Grace JB,Wetzel RG

更新日期：1981-08-01 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：:Seed number per pod is negatively skewed in Leucaena leucocephala. Post-fertilisation abortion of pods does not completely explain the skewed distribution. It is shown that a pre-fertilisation regulation effectively restricts the formation of pods with less than a certain number of seeds. The regulation is rendered th...

journal_title：Oecologia

authors： Ganeshaiah KN,Uma Shaanker R,Shivashankar G

更新日期：1986-11-01 00:00:00

abstract：:A key question in savanna ecology is how trees and grasses coexist under N limitation. We used N stable isotopes and N content to study N source partitioning across seasons from trees and associated grasses in a semi-arid savanna. We also used (15)N tracer additions to investigate possible redistribution of N by trees...

journal_title：Oecologia

authors： Priyadarshini KV,Prins HH,de Bie S,Heitkönig IM,Woodborne S,Gort G,Kirkman K,Fry B,de Kroon H

更新日期：2014-04-01 00:00:00