Community-weighted mean functional effect traits determine larval amphibian responses to litter mixtures.

abstract：:Although predator avoidance has been proposed as one possible factor influencing the distribution of fish among substrate types, no study has addressed this question directly. Groups of juvenile Atlantic cod were offered a choice between pairs of the following three substrates: sand, gravel-pebble and cobble. Their di...

journal_title：Oecologia

authors： Gotceitas V,Brown JA

更新日期：1993-02-01 00:00:00

abstract：:Integrative studies of plant-animal interactions that incorporate the multiple effects of interactions are important for discerning the importance of each factor within the population dynamics of a plant species. The low regeneration capacity of many Acacia species in arid savannas is a consequence of a combination of...

journal_title：Oecologia

authors： Rodríguez-Pérez J,Wiegand K,Ward D

更新日期：2011-09-01 00:00:00

abstract：:Predation pressure and resource availability often interact in structuring herbivore communities, with their relative influence varying in space and time. The operation of multiple ecological pressures and guild-specific herbivore responses may combine to override simple predictions of how the roles of plant quality a...

journal_title：Oecologia

authors： Zehnder CB,Stodola KW,Cooper RJ,Hunter MD

更新日期：2010-12-01 00:00:00

abstract：:Understanding the mechanisms by which populations are regulated is critical for predicting the effects of large-scale perturbations. While discrete mortality events provide clear evidence of direct impacts, indirect pathways are more difficult to assess but may play important roles in population and ecosystem dynamics...

journal_title：Oecologia

authors： Schmidt JH,Putera J,Wilson TL

更新日期：2020-02-01 00:00:00

abstract：:Although ontogenetic changes in the carbon isotope ratios of marine fauna have been well studied those of freshwater organisms have not. As a result, we may have a less than adequate assessment of the incorporation of allochthonous detritus into freshwater foodwebs. This study found a δ13C range of 9‰ for crayfish (Or...

journal_title：Oecologia

authors： France R

更新日期：1996-07-01 00:00:00

abstract：:As humans continue to alter tropical landscapes across the world, it is important to understand what environmental factors help determine the persistence of biodiversity in modified ecosystems. Studies on well-known taxonomic groups can offer critical insights as to the fate of biodiversity in these modified systems. ...

journal_title：Oecologia

authors： Moura NG,Lees AC,Aleixo A,Barlow J,Berenguer E,Ferreira J,Mac Nally R,Thomson JR,Gardner TA

更新日期：2016-03-01 00:00:00

abstract：:The identification of potential competitors has been driven by the concept of limiting similarity. Lacking are explicit tests of interaction strength among morphologically similar and dissimilar species. I used the mottled sculpin, Cottus bairdi, as a focal species in an artificial stream experiment designed to compar...

journal_title：Oecologia

authors： Resetarits WJ Jr

更新日期：1995-09-01 00:00:00

abstract：:The maintenance of separated diploid and polyploid populations within a contact zone is possible due to both prezygotic and postzygotic isolation mechanisms. Niche differentiation between two cytotypes may be an important prezygotic isolating mechanism and can be studied using reciprocal transplant experiments. We inv...

journal_title：Oecologia

authors： Raabová J,Fischer M,Münzbergová Z

更新日期：2008-12-01 00:00:00

abstract：:Increased nitrogen (N) deposition, resulting from the combustion of fossil fuels, production of synthetic fertilizers, growth of N(2)-fixing crops and high-intensity agriculture, is one of the anthropogenic factors most likely to cause global biodiversity changes over the next century. This influence may be especially...

journal_title：Oecologia

authors： Skogen KA,Holsinger KE,Cardon ZG

更新日期：2011-01-01 00:00:00

abstract：:We performed a food provisioning experiment in a population of Pied Flycatchers Ficedula hypoleuca breeding at high altitude in central Spain to test if food availability before and during laying determines clutch size. Food was provided to one of two pairs with the same date of initiation of nest-building (15 dyads o...

journal_title：Oecologia

authors： Sanz JJ,Moreno J

更新日期：1995-08-01 00:00:00

abstract：:Heterotrophic gains of carbon from various host species by the root hemiparasitic shrub Olax phyllanthi (Labill) R.Br. were assessed using techniques based on carbon isotope discrimination (δ13C) on C3 and C4 hosts and C:N ratios of xylem sap and dry matter of host and parasite. Heterotrophic benefits (H) to Olax base...

journal_title：Oecologia

authors： Tennakoon KU,Pate JS

更新日期：1996-02-01 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：: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：:The intermediate disturbance hypothesis (IDH) predicts that species diversity is maximized at moderate disturbance levels. This model is often applied to grassy ecosystems, where disturbance can be important for maintaining vascular plant composition and diversity. However, effects of disturbance type and frequency on...

journal_title：Oecologia

authors： O'Bryan KE,Prober SM,Lunt ID,Eldridge DJ

更新日期：2009-04-01 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：:The food preferences of Octodon degus are examined in laboratory test. Results indicate that degus prefer new rather than mature leaves of Chilean matorral shrubs, and that degus do not discriminate between new leaves (equivalents of shrub seedlings) of different shrub species. The significance of degus preferences in...

journal_title：Oecologia

authors： Simonetti JA,Montenegro G

更新日期：1981-01-01 00:00:00

abstract：:Ground-nesting North American landbirds have declined in the longterm, including species with a variety of migratory strategies. The mesopredator release hypothesis explains declines by suggesting that the virtual elimination of top carnivores (large-bodied canids and felids) from much of North America has "released" ...

journal_title：Oecologia

authors： Rogers CM,Caro MJ

更新日期：1998-08-01 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 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：:We tested whether temperature-induced variation in the growth rate of Rana cascadae tadpoles caused any variation in head width or leg length at metamorphosis, independent of the effects of temperature on body size. Body-size-adjusted head width appears to be insensitive to even large variations in tadpole growth rate...

journal_title：Oecologia

authors： Blouin MS,Brown ST

更新日期：2000-11-01 00:00:00

abstract：:Plant-plant facilitation is a crucial ecological process, as many plant species (facilitated) require the presence of an established individual (nurse) to recruit. Some plant facilitative interactions disappear during the ontogenetic development of the facilitated plant but others persist, even when the two plants are...

journal_title：Oecologia

authors： Montesinos-Navarro A,Segarra-Moragues JG,Valiente-Banuet A,Verdú M

更新日期：2016-06-01 00:00:00

abstract：:In a North Carolina population of Diamorpha smallii, densities were artificially manipulated by thinning stands to predetermined densities. Individuals in areas of high density produce fewer seeds than individuals at low density in the same habitat. Three components of fecundity, the number of flowers per plant, the n...

journal_title：Oecologia

authors： Clay K,Shaw R

更新日期：1981-10-01 00:00:00

abstract：:Nitrogen (N2) fixation was estimated along an aridity gradient in Namibia from the natural abundance of 15N (δ15N value) in 11 woody species of the Mimosacease which were compared with the δ15N values in 11 woody non-Mimosaceae. Averaging all species and habitats the calculated contribution of N2 fixation (N f ) to le...

journal_title：Oecologia

authors： Schulze ED,Gebauer G,Ziegler H,Lange OL

更新日期：1991-11-01 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：:The induction of diapause can be adaptive for egg survival during unfavorable conditions, while direct development can be advantageous under favorable conditions by allowing additional generations to exploit abundant resources. Therefore, the physiological capability of a female to respond to environmental cues indica...

journal_title：Oecologia

authors： Huestis DL,Marshall JL

更新日期：2006-01-01 00:00:00

abstract：:Many ecological studies rely heavily on chemical analysis of plant and animal tissues. Often, there is limited time and money to perform all the required analyses and this can result in less than ideal sampling schemes and poor levels of replication. Near infrared reflectance spectroscopy (NIRS) can relieve these cons...

journal_title：Oecologia

authors： Foley WJ,McIlwee A,Lawler I,Aragones L,Woolnough AP,Berding N

更新日期：1998-09-01 00:00:00

abstract：:Biodiverse environments provide a variety of resources that can be exploited by consumers. While many studies revealed a positive correlation between biodiversity and consumer biomass and richness, only few studies have investigated how resource diversity affects single consumers. To better understand whether a single...

journal_title：Oecologia

authors： Drescher N,Wallace HM,Katouli M,Massaro CF,Leonhardt SD

更新日期：2014-12-01 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：:Effective communication regarding distance in the vertical dimension is critical for many ecological, climatological and broader geophysical studies of the Earth. Confusion exists regarding the definition of three English words commonly used to describe the vertical dimension: (1) elevation; (2) altitude; and (3) he...

journal_title：Oecologia

authors： McVicar TR,Körner C

更新日期：2013-02-01 00:00:00

abstract：:Development of ornamental characters exposed to directional selection may be particularly sensitive to the effect of parasitic infections. Antlers are ornamental characters of importance in intraspecific interactions, and are in reindeer (Rangifer) developed by both males and females. By antihelmintic treatment of nat...

journal_title：Oecologia

authors： Folstad I,Arneberg P,Karter AJ

更新日期：1996-03-01 00:00:00