Nutrient dynamics within amazonian forests : II. Fine root growth, nutrient availability and leaf litter decomposition.

abstract：:The diurnal periodicity of emergence of several stonefly and mayfly species was studied on the shore of lake Mondsee, Austria. Nemoura cinerea (Plecoptera) emerges during the whole day with peaks in the morning and afternoon. The Ephemeroptera Leptophlebia marginata, Ephemera danica and Centroptilum luteolum emerge as...

journal_title：Oecologia

authors： Thomas E

更新日期：1969-08-01 00:00:00

abstract：:Interspecific interactions of herbivores sharing a host plant may be important in structuring herbivore communities. We investigated host plant-mediated interactions of root (Hylobius transversovittatus) and leaf herbivores (Galerucella calmariensis), released to control purple loosestrife (Lythrum salicaria) in North...

journal_title：Oecologia

authors： Hunt-Joshi TR,Blossey B

更新日期：2005-02-01 00:00:00

abstract：:Although plant growth is generally recognized to be influenced by allocation to defense, genetic background (e.g., inbreeding), and gender, rarely have those factors been addressed collectively. In quaking aspen (Populus tremuloides Michx.), phenolic glycosides (PGs) and condensed tannins (CTs) constitute up to 30 % o...

journal_title：Oecologia

authors： Cole CT,Stevens MT,Anderson JE,Lindroth RL

更新日期：2016-06-01 00:00:00

abstract：:Understanding the effects of invasive plants on native consumers is important because consumer-mediated indirect effects have the potential to alter the dynamics of coexistence in native communities. Invasive plants may promote changes in consumer pressure due to changes in protective cover (i.e., the architectural co...

journal_title：Oecologia

authors： Dutra HP,Barnett K,Reinhardt JR,Marquis RJ,Orrock JL

更新日期：2011-07-01 00:00:00

abstract：:Three types of experiments indicate that the functional organization of the mountain birch may influence the ways in which the tree responds to simulated or natural herbivory. The first experiment showed that herbivory to both short and long shoot leaves affects plant development but, because growth largely proceeds b...

journal_title：Oecologia

authors： Haukioja E,Ruohomäki K,Senn J,Suomela J,Walls M

更新日期：1990-02-01 00:00:00

abstract：:Soil nutrient availability directly enhances vegetative growth, flowering, and fruiting in alpine ecosystems. However, the impacts of nutrient addition on pollinator visitation, which could affect seed output indirectly, are unknown. In a nutrient addition experiment, we tested the hypothesis that seed output in the i...

journal_title：Oecologia

authors： Muñoz AA,Celedon-Neghme C,Cavieres LA,Arroyo MT

更新日期：2005-03-01 00:00:00

abstract：:Estuarine assemblages of fishes and natant decapod crustaceans (i.e. nekton) comprise both permanent resident species and juveniles of coastal marine species that use estuaries primarily as nurseries. In an attempt to understand how the young of marine species successfully invade communities of permanent estuarine res...

journal_title：Oecologia

authors： Kneib RT,Knowlton MK

更新日期：1995-09-01 00:00:00

abstract：:Interactions among granivores and seeds depend on the foraging behaviour and morphology of the granivores and on the attributes and availability of seeds. We investigated seed selection by the seed harvesting ant Messor bouvieri in three adjacent plant communities in Spain by relating the harvested seeds to those in t...

journal_title：Oecologia

authors： Willott SJ,Compton SG,Incoll LD

更新日期：2000-10-01 00:00:00

abstract：:Agricultural land use is a leading cause of habitat degradation, leaving a legacy of ecological impacts long after agriculture has ceased. Yet the mechanisms for legacy effects, such as altered plant community composition, are not well understood. In particular, whether plant community recovery is limited by an inabil...

journal_title：Oecologia

authors： Barker CA,Turley NE,Orrock JL,Ledvina JA,Brudvig LA

更新日期：2019-04-01 00:00:00

abstract：:Competition for water surface prey between fish (Priapichtus annectens: Poeciliidae) and water striders (Potamobates unidentatus: Gerridae) was studied in the laboratory and in pools in a small tropical stream. Laboratory experiments showed that fish depressed activity and foraging success of water striders. Large fis...

journal_title：Oecologia

authors： Englund G,Johansson F,Olsson TI

更新日期：1992-12-01 00:00:00

abstract：:The seasonal and long-term population dynamics of helminths parasitizing voles suggested that density-dependent factors might be important in the population dynamics of common species, whereas density-independent factors predominate in the regulation of the rare species. To test this, we used single and multiple regre...

journal_title：Oecologia

authors： Haukisalmi V,Henttonen H

更新日期：1990-06-01 00:00:00

abstract：:Ideal free distribution (IFD) models predict that animals distribute themselves such that no individual can increase its fitness by moving to another patch. Many empirical tests assume that the interference among animals is independent of density and do not quantify the effects of density on fitness traits. Using two ...

journal_title：Oecologia

authors： van der Hammen T,Montserrat M,Sabelis MW,de Roos AM,Janssen A

更新日期：2012-05-01 00:00:00

abstract：:Osmoderma eremita is a species of beetle that inhabits hollows in ancient trees, which is a habitat that has decreased significantly during the last century. In southeastern Sweden, we studied the metapopulation dynamics of this beetle over a 25 year period, using capture-mark-recapture. The metapopulation size had be...

journal_title：Oecologia

authors： Lindman L,Larsson MC,Mellbrand K,Svensson GP,Hedin J,Tranberg O,Ranius T

更新日期：2020-12-01 00:00:00

abstract：:In flowering plants, many dioecious species display a certain degree of sexual dimorphism in non-reproductive traits, but this dimorphism tends to be much less striking than that found in animals. Sexual size dimorphism in plants may be limited because competition for light in crowded environments so strongly penalise...

journal_title：Oecologia

authors： Labouche AM,Pannell JR

更新日期：2016-07-01 00:00:00

abstract：:In this review I offer a solution to the problem why endotherm populations appear to be so inefficient in converting food energy into body substance despite the fact that individual endotherms are just as 'efficient' in this respect as individual ectotherms. Calculated for individuals of half the adult mass both ectot...

journal_title：Oecologia

authors： Wieser W

更新日期：1985-07-01 00:00:00

abstract：:Seasonal excavations of ramet systems in overlapping natural populations of Typha latifolia and T. angustifolia revealed intrapopulation variation in ramet size and reproduction. Reproductive "states" were recognized based on whether or not a ramet had flowered and the number of offspring ramets it possessed. As the g...

journal_title：Oecologia

authors： Grace JB,Wetzel RG

更新日期：1982-01-01 00:00:00

abstract：:Shoot herbivory by the sapling specialist shoot-borer Cromarcha stroudagnesia (Lepidoptera, Pyralidae, Chrysauginae) is shown to have large direct and indirect effects on the rates of height increment and mortality of saplings of its host tree, Tabebuia ochracea (Bignoniaceae), in the secondary successional tropical d...

journal_title：Oecologia

authors： Sullivan JJ

更新日期：2003-06-01 00:00:00

abstract：:In annual pastures utilized for grazing, the amount and quality of the standing dry matter in the dry season is of importance for the performance of the animals. Often both characteristics decline at the end of the green season. It is shown, that dispersal of the reproductive structures of the vegetation may be the ma...

journal_title：Oecologia

authors： de Ridder N,Seligman NG,van Keulen H

更新日期：1981-05-01 00:00:00

abstract：:We have analysed the importance of worker ants (Proformica longiseta, Formicidae) as pollinators of a mass-flowering woody plant (Hormathophylla spinosa, Cruciferae) in the high-mountain area of the Sierra Nevada (southern Spain). We have quantified the abundance and foraging behavior of P. longiseta in comparison wit...

journal_title：Oecologia

authors： Gómez JM,Zamora R

更新日期：1992-09-01 00:00:00

abstract：:Floral visitors vary in their pollination efficiency and their preferences for floral traits. If low-efficiency pollinators decrease the amount of pollen available to higher efficiency visitors, then low-efficiency visitors may actually have negative fitness consequences for the plants that they visit. We used experim...

journal_title：Oecologia

authors： Lau JA,Galloway LF

更新日期：2004-12-01 00:00:00

abstract：:The factors that promote ecological separation among closely related sympatric carnivores in tropical forests are poorly understood due to a paucity of field studies. Here, we report on community-wide food resource utilization patterns among eight co-existing carnivores in the Dzanga-Sangha Reserve, Central African Re...

journal_title：Oecologia

authors： Ray J,Sunquist M

更新日期：2001-05-01 00:00:00

abstract：:One explanation for long-term fluctuations in population density is that the intensity of interactions between species is variable. A population can experience variation in the intensity of a species interaction if (1) the density of species with which it directly interacts changes and/or (2) the strength of the inter...

journal_title：Oecologia

authors： Chalcraft DR,Andrews RM

更新日期：1999-05-01 00:00:00

abstract：:Fluorescent probes have been applied to study by epifluorescence microscopy interactions between species in an Anabaena flos-aquae association, derived from a freshwater community. Glycoconjugates (macromolecules containing carbohydrate residues) have been shown to play a vital role in recognition processes and in for...

journal_title：Oecologia

authors： Müller U,Sengbusch PV

更新日期：1983-05-01 00:00:00

abstract：:Parents are predicted to trade offspring number and quality against the costs of reproduction. In altricial birds, parasites can mediate these costs because intensity of parasitism may increase with parental effort. In addition, parasites may mediate a trade-off between offspring number and quality because nestlings i...

journal_title：Oecologia

authors： Saino N,Ferrari RP,Romano M,Ambrosini R,Møller A

更新日期：2002-10-01 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：:Most food webs use taxonomic or trophic species as building blocks, thereby collapsing variability in feeding linkages that occurs during the growth and development of individuals. This issue is particularly relevant to integrating parasites into food webs because parasites often undergo extreme ontogenetic niche shif...

journal_title：Oecologia

authors： Preston DL,Jacobs AZ,Orlofske SA,Johnson PT

更新日期：2014-03-01 00:00:00

abstract：:Carbon dioxide exchange patterns of prickly-pear cactus (Opuntia phaeacantha var. discata) were studied throughout the year to determine temperature influences on and seasonal responses of the process. Cacti exhibit CAM which permits nighttime carboxylation of CO2 to malate and daytime decarboxylation of malate to CO2...

journal_title：Oecologia

authors： Nisbet RA,Patten DT

更新日期：1974-12-01 00:00:00

abstract：:The response of an Australian arid-zone gecko community to sulphur dioxide and salt spray from a mine and industrial site was investigated from 1992 to 1995. Geckos were abundant and fecund at control sites in chenopod shrubland and annual capture rates were strongly influenced by minimum night temperatures. Capture r...

journal_title：Oecologia

authors： Read JL

更新日期：1998-04-01 00:00:00

abstract：:Leaf traits related to life-span and nutrient-use efficiency were studied in the dominant Hawaiian tree species, Metrosideros polymorpha, at both ends of a natural fertility gradient, from young, nitrogen-poor soils to older, phosphorus-poor soils. The main objective of this study was to understand how nutrient limita...

journal_title：Oecologia

authors： Cordell S,Goldstein G,Meinzer FC,Vitousek PM

更新日期：2001-04-01 00:00:00

abstract：:This paper presents tests of a model of wound-induced defence in herbaceous plants. Many studies have reported both chemical changes in leaves and changes in the behaviour and/or physiology of herbivores as a result of wounding leaves. These studies and others have led to the development of various models to explain w...

journal_title：Oecologia

authors： Coleman RA,Barker AM,Fenner M

更新日期：1996-10-01 00:00:00