Dietary mixing in three generalist herbivores: nutrient complementation or toxin dilution?

abstract：CONCLUSION:For the abovementioned reasons, and with all due respect to the scholarship of Mansson and McGlade, who display a deep knowledge of thermodynamics and ecology, I cannot agree that Odum's use of energy concepts is "wholly discredited". Refinements from microscopic thermodynamics may not have been faithfully c...

journal_title：Oecologia

authors： Patten BC

更新日期：1993-04-01 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：: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：:Nitrogen (N) losses constrain rates of plant carbon dioxide (CO2) uptake and storage in many ecosystems globally. N isotope models have been used to infer that ~30 % of terrestrial N losses occur via microbial denitrification; however, this approach assumes a small isotope effect associated with N leaching losses. Pas...

journal_title：Oecologia

authors： Mnich ME,Houlton BZ

更新日期：2016-06-01 00:00:00

abstract：:Nitrogen deposition in the northeastern US changed N availability in the latter part of the twentieth century, with potential legacy effects. However, long-term N cycle measurements are scarce. N isotopes in tree rings have been used as an indicator of N availability through time, but there is little verification of w...

journal_title：Oecologia

authors： Burnham MB,Adams MB,Peterjohn WT

更新日期：2019-12-01 00:00:00

abstract：:The response to a single defoliation was studied on three clones of Themeda triandra collected in the short, mid, and tall grassland regions of the Serengeti National Park (Tanzania). These sites represent a gradient of decreasing grazing intensity. Growth, allocation pattern, and several morphometric traits were moni...

journal_title：Oecologia

authors： Oesterheld M,McNaughton SJ

更新日期：1988-11-01 00:00:00

abstract：:Amphibian life history traits are affected by temperature and precipitation. Yet, connecting these relationships to population growth, especially for multiple populations within a species, is lacking and precludes our understanding of amphibian population dynamics and distributions. Therefore, we constructed integral ...

journal_title：Oecologia

authors： Caruso NM,Staudhammer CL,Rissler LJ

更新日期：2020-08-01 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：:Recent discussions on scaling issues in ecology have emphasized that processes acting at a wide range of spatial and temporal scales influence ecosystems and thus there is no appropriate single scale at which ecological processes should be studied. This may be particularly true for environmental disturbances (e.g. El ...

journal_title：Oecologia

authors： Edwards MS

更新日期：2004-02-01 00:00:00

abstract：:We studied the nutritional behaviour of hinds foraging on a mixed-forest edge by direct observation of their choices at each season and by measuring nutrient concentration in the plants. We compared nutrient concentrations in the observed diets with those in the total available vegetation, and with those of 1,000 rand...

journal_title：Oecologia

authors： Verheyden-Tixier H,Renaud PC,Morellet N,Jamot J,Besle JM,Dumont B

更新日期：2008-06-01 00:00:00

abstract：:11 fruit fly species captured at 47 sites in a natural forest area at Cooloola (south-east Queensland) revealed specific patterns of spatial abundance. Although all species were collected throughout the study area, D. bryoniae, D. mayi, D. neohumeralis and D. tryoni were more prevalent (average number caught per trap)...

journal_title：Oecologia

authors： Zalucki MP,Drew RA,Hooper GH

更新日期：1984-10-01 00:00:00

abstract：:The influence of irrigation and nitrogen fertilization in early summer on root and shoot growth of Atriplex confertifolia, a C4 shrub species, was examined in a cold-winter desert community in northern Utah. Soil water and xylem pressure potentials were monitored during the summer period.At the time of watering the su...

journal_title：Oecologia

authors： Hodgkinson KC,Johnson PS,Norton BE

更新日期：1978-01-01 00:00:00

abstract：:Belowground processes in light gap openings are poorly understood, particularly in tropical forests. Fine roots in three zones of light gap openings and adjacent intact forest were regularly measured in buried bags and surface litter envelopes for 2 years. Fine root biomass does not vary significantly within gaps for ...

journal_title：Oecologia

authors： Sanford RL Jr

更新日期：1990-07-01 00:00:00

abstract：:The structure and seasonal dynamics of phytoplankton communities in the littoral zone were compared between oligotrophic and eutrophic lakes in the southeastern United States. Differences in diversity and species composition between lakes could be ascribed to long-term variation in nutrients corresponding to trophic s...

journal_title：Oecologia

authors： Lemly AD,Dimmick JF

更新日期：1982-09-01 00:00:00

abstract：:Vein placement has been hypothesised to control leaf hydraulic properties, but the ecophysiological significance of variation in vein placement in the angiosperms has remained poorly understood. The highly diverse Neotropical Bromeliaceae offers an excellent system for exploring understudied relationships between leaf...

journal_title：Oecologia

authors： Males J

更新日期：2017-11-01 00:00:00

abstract：:The community structure of sedentary organisms is largely controlled by the outcome of direct competition for space. Understanding factors defining competitive outcomes among neighbors is thus critical for predicting large-scale changes, such as transitions to alternate states within coral reefs. Using a spatially exp...

journal_title：Oecologia

authors： Sandin SA,McNamara DE

更新日期：2012-04-01 00:00:00

abstract：:Large-scale ocean-atmosphere physical dynamics can have profound impacts on the structure and organization of marine ecosystems. These changes have been termed "regime shifts", and five different episodes have been detected in the North Pacific Ocean, with concurrent changes also occurring in the Bering and Beaufort S...

journal_title：Oecologia

authors： Luque SP,Ferguson SH

更新日期：2009-05-01 00:00:00

abstract：:Corridors connect otherwise isolated habitat patches and can direct movement of animals among such patches. In eight experimental landscapes, we tested two hypotheses of how corridors might affect dispersal behavior. The Traditional Corridor hypothesis posits that animals preferentially leave patches via corridors, fo...

journal_title：Oecologia

authors： Fried JH,Levey DJ,Hogsette JA

更新日期：2005-05-01 00:00:00

abstract：:Spatial distribution in the two collembolan species Tomocerus minor and Orchesella cincta is greatly influenced by the distribution of the environmental factors water and food. T. minor is totally restricted in distribution to water-saturated places, where it forms spaced-out aggregations. O. cincta assembles in water...

journal_title：Oecologia

authors： Verhoef HA,Nagelkerke CJ

更新日期：1977-01-01 00:00:00

abstract：:Otolith microchemistry studies indicate that growth-phase (yellow stage) anguillid eels commonly shift at irregular intervals between fresh and saline waters, but this technique has not detected regular seasonal migrations across salinity zones. We tested the ability of otolith microchemistry and stable isotope analys...

journal_title：Oecologia

authors： Clément M,Chiasson AG,Veinott G,Cairns DK

更新日期：2014-08-01 00:00:00

abstract：:In white pine (Pinus strobus) seedlings grown in five forest soils from New York State, net photosynthetic capacity (Amax) plant-1 was correlated with total foliar N plant-1 (r 2=0.57), but was more highly correlated with total foliar P plant-1 (r 2=0.82). There was no relationship (r 2<0.01) between Amax [g leaf]-1 a...

journal_title：Oecologia

authors： Reich PB,Schoettle AW

更新日期：1988-10-01 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：:Specialist herbivores are known to alter their host's wound-induced responses but the beneficiaries of these alterations are unknown. Nicotiana attenuata plants release a burst of ethylene specifically in response to feeding by Manduca sexta larvae, which is known to suppress wound- and methyl jasmonate (MeJA)-inducib...

journal_title：Oecologia

authors： Voelckel C,Schittko U,Baldwin IT

更新日期：2001-04-01 00:00:00

abstract：:Laboratory feeding experiments were conducted with Dipodomys ordii and Perognathus flavus in an attempt to discover a mechanism which might result in seed size selection. There was no marked difference in the proportions of four seed types collected whether the rodents foraged in the presence or absence of one another...

journal_title：Oecologia

authors： Hutto RL

更新日期：1978-01-01 00:00:00

abstract：:We tested (1) how the presence of a diverse soil faunal community affects ecosystem carbon balance and (2) whether habitat patchiness modifies the influence of soil fauna on plant growth and carbon dynamics. We constructed cylindrical microcosms that contained coniferous forest humus and different litter materials eit...

journal_title：Oecologia

authors： Sulkava P,Huhta V,Laakso J,Gylén ER

更新日期：2001-09-01 00:00:00

abstract：:A three year study of Senecio keniodendron (Compositae), a giant rosette species of the alpine zone of Mt. Kenya, demonstrated that individuals which reproduce are more likely to die, and less likely to reproduce in the future if they do survive, than are vegetative individuals of the same size. However, if an individ...

journal_title：Oecologia

authors： Smith AP,Young TP

更新日期：1982-11-01 00:00:00

abstract：:Biotic assemblages of insular habitats are nested when poor assemblages are subsets of richer ones. Nestedness of species assemblages is frequent and may result from selective extinction or frequent colonization in insular habitats. It may also be created by a nested distribution of habitats among islands or by sampli...

journal_title：Oecologia

authors： Calmé S,Desrochers A

更新日期：1999-03-01 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：:Predictions of plant responses to climate change are frequently based on organisms' presence in warmer locations, which are then assumed to reflect future performance in cooler areas. However, as plant life stages may be affected differently by environmental changes, there is little empirical evidence that this approa...

journal_title：Oecologia

authors： Ibáñez I,Katz DSW,Lee BR

更新日期：2017-07-01 00:00:00

abstract：:The foraging behavior of Mesocyclops edax in artificial patches of high and low prey density was examined. In low density patches Mesocyclops swam in an irregular curvilinear path with little or no looping behavior. In high density patches Mesocyclops exhibited extensive horizontal and vertical looping behavior. Horiz...

journal_title：Oecologia

authors： Williamson CE

更新日期：1981-09-01 00:00:00