Termites of a South African savanna : III. Comparative attack on toilet roll baits in subhabitats.

abstract：:The impacts of climatic change on organisms depend on the interaction of multiple stressors and how these may affect the interactions among species. Consumer-prey relationships may be altered by changes to the abundance of either species, or by changes to the per capita interaction strength among species. To examine t...

journal_title：Oecologia

authors： Poore AG,Graba-Landry A,Favret M,Sheppard Brennand H,Byrne M,Dworjanyn SA

更新日期：2013-11-01 00:00:00

abstract：:By analogy with deterministic stability, the stability of stochastic ecological systems can be viewed as a tendency for population densities to avoid dynamic boundaries (i.e. boundedness) or to approach a dynamic attractor (i.e. attraction). At the population level, these two views generate predictions consistent with...

journal_title：Oecologia

authors： Crowley PH

更新日期：1992-05-01 00:00:00

abstract：:To investigate the factors that influence prey utilization among predators with active prey, three series of experiments were performed in which Ural owls (Strix uralensis) searched for and attacked three prey species of wild mice, Microtus montebelli, Apodemus speciosus, and A. argenteus, in a large flight cage. Over...

journal_title：Oecologia

authors： Nishimura K,Abe MT

更新日期：1988-11-01 00:00:00

abstract：:Southern grasshopper mice (Onychomys torridus) were allowed to junt buried mealworms in a laboratory arena. The prey were arranged in two patterns, one aggregated and one relatively dispersed. Mice captured more prey from the dispersed treatment in the 2 h experiment, a result that can be attributed to both the greate...

journal_title：Oecologia

authors： Taylor RJ

更新日期：1977-09-01 00:00:00

abstract：:We measured the response of dark respiration (R(d)) to temperature and foliage characteristics in the upper canopies of tree species in temperate rainforest communities in New Zealand along a soil chronosequence (six sites from 6 years to 120,000 years). The chronosequence provided a vegetation gradient characterised ...

journal_title：Oecologia

authors： Turnbull MH,Tissue DT,Griffin KL,Richardson SJ,Peltzer DA,Whitehead D

更新日期：2005-03-01 00:00:00

abstract：:Investigating how prey density influences a prey's combined predation risk from multiple predator species is critical for understanding the widespread importance of multiple predator effects. We conducted experiments that crossed six treatments consisting of zero, one, or two predator species (hellgrammites, greenside...

journal_title：Oecologia

authors： Vance-Chalcraft HD,Soluk DA

更新日期：2005-07-01 00:00:00

abstract：:Some perennial fugitive plants that colonize badger disturbances in xeric prairies have a limited dispersal capacity, and consequently propagules are dispersed over a small area. I hypothesized that high density-dependent mortality might occur early in the life history of such species, and thus increased survival migh...

journal_title：Oecologia

authors： Platt WJ

更新日期：1976-12-01 00:00:00

abstract：:Ecological systems have naturally high interannual variance in phenology. Component species have presumably evolved to maintain appropriate phenologies under historical climates, but cases of inappropriate phenology can be expected with climate change. Understanding controls on phenology permits predictions of ecologi...

journal_title：Oecologia

authors： Valtonen A,Ayres MP,Roininen H,Pöyry J,Leinonen R

更新日期：2011-01-01 00:00:00

abstract：:Interspecific interactions can vary within and among populations and geographic locations. This variation can subsequently influence the evolution and coevolution of species interactions. We investigated population and geographic variation in traits important to pollinating seed-consuming interactions between the seni...

journal_title：Oecologia

authors： Holland JN,Fleming TH

更新日期：1999-11-01 00:00:00

abstract：:The life history of freshwater cladocerans such as Daphnia spp. is strongly affected by their environment. Factors such as temperature, food quantity and even the presence or absence of predators influence growth, reproduction and morphology of individuals. Recently, it has also become clear that the quality of the fo...

journal_title：Oecologia

authors： Seidendorf B,Meier N,Petrusek A,Boersma M,Streit B,Schwenk K

更新日期：2010-02-01 00:00:00

abstract：:Patterns of β-diversity can provide insight into forces shaping community assembly. We analyzed species-rich insect assemblages in two reserve fragments that had once been part of one contiguous Mediterranean coastal pine forest. Local environments are still similar across both fragments, but their landscape context d...

journal_title：Oecologia

authors： Uhl B,Wölfling M,Fiedler K

更新日期：2021-02-01 00:00:00

abstract：:The legume foodplants of Colias butterflies possess specific chemical components which stimulate oviposition in females of the genus. Different legumes provide different degrees of stimulation, as demonstrated by close correlation between field observations and laboratory experiments with a new behavioral assay. Sever...

journal_title：Oecologia

authors： Stanton ML

更新日期：1979-01-01 00:00:00

abstract：:Relatively few published food webs have included parasites, and in this study we examined the animal community in a stream across eight contiguous seasons to test how inclusion of helminth parasites alters the topology or structure of the food web. Food webs constructed for each season and analyzed using common binary...

journal_title：Oecologia

authors： Hernandez AD,Sukhdeo MV

更新日期：2008-06-01 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：: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：:Plants of Dudleya blochmanae were studied over a growing season (December-June) in their native habitat on the central California coast. During the season soil water potential fluctuatdd widely, becoming unmeasurably negative (<-5.0 MPa) by early May. In contrast, leaf water potential did not fluctuate greatly with th...

journal_title：Oecologia

authors： Teeri JA

更新日期：1984-09-01 00:00:00

abstract：:In southeastern Arizona, Prosopis juliflora (Swartz) DC. and Quercus emoryi Torr. are the dominant woody species at grassland/woodland boundaries. The stability of the grassland/woodland boundary in this region has been questioned, although there is no direct evidence to confirm that woodland is encroaching into grass...

journal_title：Oecologia

authors： McPherson GR,Boutton TW,Midwood AJ

更新日期：1993-02-01 00:00:00

abstract：:Pheasants (Phasianus colchicus) and grey partridges (Perdix perdix) were maintained together on land known to be contaminated with eggs of the caecal nematode Heterakis gallinarum to examine the hypothesis that this shared parasite has a greater impact on grey partridges than on pheasants. Since an inverse relationshi...

journal_title：Oecologia

authors： Tompkins DM,Dickson G,Hudson PJ

更新日期：1999-05-01 00:00:00

abstract：:Weight losses from sweet chestnut and beech leaves, attributable to biotic and abiotic breakdown processes, leaching and microbial decomposition have been studied using tethered leaves and litter bags. The experimental sites were two adjacent areas of deciduous woodland. In one area (the Castanea site) a mor-like mode...

journal_title：Oecologia

authors： Anderson JM

更新日期：1973-09-01 00:00:00

abstract：:Species of the 'bana' vegetation in the Amazonas region of equatorial South America have scleromorphic leaves. This leaf type, which characterizes the vegetation of Mediterranean climates, among others, has apparently evolved in this community in response to the oligotrophic soils and widely fluctuating water table.An...

journal_title：Oecologia

authors： Sobrado MA,Medina E

更新日期：1980-01-01 00:00:00

abstract：:The up-regulation of secondary metabolic pathways following herbivore attack and the subsequent reduction in herbivore performance have been identified in numerous woody plant species. Eucalypts constitutively express many secondary metabolites in the leaves, including terpenes and formylated phloroglucinol compounds ...

journal_title：Oecologia

authors： Henery ML,Wallis IR,Stone C,Foley WJ

更新日期：2008-07-01 00:00:00

abstract：:The dispersal of an endangered beetle, Osmoderma eremita, that lives in tree hollows, was studied by mark-release-recapture with pitfall traps. As only a small proportion of all dispersals is observed by this method, a simulation model was constructed to estimate the dispersal rate per individual. The model results su...

journal_title：Oecologia

authors： Ranius T,Hedin J

更新日期：2001-02-01 00:00:00

abstract：:Life history theory predicts that migratory fishes should delay reproduction, be larger at first reproduction, and have higher fecundities than nonmigrants. We tested this hypothesis by comparing life histories of anadromous ("estuary") and resident freshwater ("upstream") threespine sticklebacks (Gasterosteus aculeat...

journal_title：Oecologia

authors： Snyder RJ,Dingle H

更新日期：1990-10-01 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：:Forest destruction and disturbance can have long-term consequences for species diversity and ecosystem processes such as seed dispersal. Understanding these consequences is a crucial component of conserving vulnerable ecosystems. In the heavily fragmented and disturbed Kakamega Forest, western Kenya, we studied seed d...

journal_title：Oecologia

authors： Farwig N,Böhning-Gaese K,Bleher B

更新日期：2006-03-01 00:00:00

abstract：:Inoculation with arbuscular mycorrhizal (AM) fungi is known to increase the species diversity of plant communities. One mechanism that can increase the likelihood of species co-existence, and thus species diversity, is a trade-off between competitive ability and the magnitude of plant growth response to AM fungal inoc...

journal_title：Oecologia

authors： Stanescu S,Maherali H

更新日期：2017-02-01 00:00:00

abstract：:Host use by herbivores is largely determined by host properties such as nutrient content and chemical defence against foragers. The impacts of these attributes on a herbivore may largely depend on its life cycle stage. Lichen species are known to differ in nutritional quality and level of chemical defence and, consequ...

journal_title：Oecologia

authors： Pöykkö H,Backor M,Bencúrová E,Molcanová V,Backorová M,Hyvärinen M

更新日期：2010-10-01 00:00:00

abstract：:The acoustic behaviour of 15 sympatric and synchronically breeding species of frogs in an area of floating meadows near Manaus (Brazil) was studied for a period of 8 months. The calling positions of each species can be identified with certain physiognomic types of vegetation.Sound analyses were used to compare the mat...

journal_title：Oecologia

authors： Hödl W

更新日期：1977-12-01 00:00:00

abstract：:Facultative diapause should be favoured by natural selection in temporary variable habitats. Diapause patterns are evolutionary constrained because producing diapause is resource demanding, which might have implications for competitive dynamics and competitor coexistence through mechanisms such as the storage effect. ...

journal_title：Oecologia

authors： Aránguiz-Acuña A,Ramos-Jiliberto R,Serra M

更新日期：2015-01-01 00:00:00

abstract：:Some factors influencing the species richness of West African fish communities were studied in a sample of 26 rivers using four habitat and hydrologic variables. Analysis of a larger sample of 39 rivers showed that species richness was positively related to area. A power function with an exponent of 0.32 gave the best...

journal_title：Oecologia

authors： Hugueny B

更新日期：1989-05-01 00:00:00