Oecologia
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Ecophysiology of Amaranthus palmeri, a sonoran desert summer annual
Oecologia - Tập 57 - Trang 107-112 - 1983
Basic photosynthetic and water relations characteristics in relation to soil water availability were investigated in Amaranthus palmeri, a common C4 summer annual of the Sonoran Desert. Under conditions of high soil water availability, photosynthetic capacity exceeded 70 μmol CO2 m-2 s-1 at a leaf temperature optimum of 42°C, and photosynthesis was not light saturated at an irradiance of 2.0 mmol ...... hiện toàn bộ
How foraging tactics determine host-plant use by a polyphagous caterpillar
Oecologia - Tập 129 - Trang 98-105 - 2001
The use of multiple host-plant species by populations of insect herbivores can result from a variety of possible ecological and behavioral mechanisms. An understanding of the foraging mechanisms determining polyphagy in relation to local ecological conditions is therefore essential to understanding the evolutionary ecology of polyphagy. Here, we evaluate patterns of host-plant use by the polyphago...... hiện toàn bộ
Energetics and consumption rates of alpine grasshoppers (Orthoptera: Acrididae) in New Zealand
Oecologia - Tập 33 - Trang 17-44 - 1978
An energy budget, based entirely on field data, has been constructed for a community of three New Zealand alpine grasshopper species, Paprides nitidus Hutton, Sigaus australis (Hutton) and Brachaspis nivalis (Hutton) (Acrididae). The consumption results are compared with a previous gravimetric ingestion rate study of the same field populations. Jointly, the two studies demonstrate some very specif...... hiện toàn bộ
Gregariousness versus solitude: another look at parasite faunal richness in Canadian freshwater fishes
Oecologia - Tập 89 - Trang 150-152 - 1992
Recently Poulin (1991), using published data on Canadian freshwater fishes (60 species, three families), concluded that there is no difference in parasite species numbers between solitary and social species. Nor could he associate parasite diversity to host size, age or range of distribution. Analysing Poulin's data with somewhat differing methods I reached different conclusions. Recognising that ...... hiện toàn bộ
Ants distinguish neighbors from strangers
Oecologia - Tập 81 - Trang 198-200 - 1989
Ants are known to distinguish their own nests and nestmates from all others, using colony-specific odors. Here I show that harvester ants (Pogonomyrmex barbatus) can further distinguish between two kinds of non-nestmates of the same species: neighbors and strangers. Interactions between colonies were thought to depend on the numbers of alien ants that each colony encounters on its territory. The r...... hiện toàn bộ
Correction to: Ant-mediated ecosystem processes are driven by trophic community structure but mainly by the environment
Oecologia - Tập 194 - Trang 299-299 - 2020
Unfortunately, the given and family names of author “Mickal Houadria” was incorrectly published in the original.
Tropical land-use change alters trait-based community assembly rules for dung beetles and birds
Oecologia - Tập 195 - Trang 705-717 - 2021
Tropical rainforest disturbance and conversion are critical drivers of biodiversity loss. A key knowledge gap is understanding the impacts of habitat modification on mechanisms of community assembly, which are predicted to respond differently between taxa and across spatial scales. We use a null model approach to detect trait assembly of species at local- and landscape-scales, and then subdivide c...... hiện toàn bộ
Behavioural thermoregulation of the Andean toad (Bufo spinulosus) at high altitudes
Oecologia - Tập 80 - Trang 32-38 - 2013
The body temperature of free-ranging Andean toadsBufo spinulosus was measured either directly or radiotelemetrically during two 15-day periods at 3200 m elevation in the Mantaro Valley, Central Perú. All toads attempted to maintain their diurnal sum of body temperature within a narrow range. Consequently thermoregulatory behaviour differed according to cloud cover and precipitation. If the sky was...... hiện toàn bộ
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