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You searched for: Journal Oikos Remove constraint Journal: Oikos Publication Year 2018 Remove constraint Publication Year: 2018 Source 2018 v.127 no.2 Remove constraint Source: 2018 v.127 no.2
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1. Adoption of alternative migratory tactics: a view from the ultimate mechanism and threshold trait changes in a salmonid fish

Author:
Sahashi, Genki; Morita, Kentaro
Source:
Oikos 2018 v.127 no.2 pp. 239-251
ISSN:
0030-1299
Subject:
Oncorhynchus masou; Salvelinus malma; artificial selection; hatcheries; males; migratory behavior; migratory species; models; rivers; salmon
Abstract:
... Partial migration, in which a portion of the population migrates while the rest of the population remains as residents, is a common form of migration. Alternative migratory tactics (AMTs) of partial migration are often determined by polygenic threshold traits. However, the ultimate mechanisms that drive inter‐population variations in threshold traits are not well understood. We present a simple sc ...
DOI:
10.1111/oik.03715

2. Berry production drives bottom–up effects on body mass and reproductive success in an omnivore

Author:
Hertel, Anne G.; Bischof, Richard; Langval, Ola; Mysterud, Atle; Kindberg, Jonas; Swenson, Jon E.; Zedrosser, Andreas
Source:
Oikos 2018 v.127 no.2 pp. 197-207
ISSN:
0030-1299
Subject:
Ursus arctos; Vaccinium myrtillus; Vaccinium vitis-idaea; autumn; bilberries; climate; climate change; dormancy; females; flowering; food availability; food shortages; fruiting bodies; herbivores; hibernation; life history; mammals; omnivores; phenology; prognosis; reproductive success; ripening; snow; species recruitment; spring; temperature; time series analysis; yearlings; Sweden
Abstract:
... Obligate herbivores dominate studies of the effects of climate change on mammals, however there is limited empirical evidence for how changes in the abundance or quality of plant food affect mammalian omnivores. Omnivores can exploit a range of different food resources over the course of a year, but they often rely on seasonally restricted highly nutritious fruiting bodies during critical life sta ...
DOI:
10.1111/oik.04515

3. Combining plant–frugivore networks for describing the structure of neotropical communities

Author:
Almeida, Adriana de; Mikich, Sandra Bos
Source:
Oikos 2018 v.127 no.2 pp. 184-197
ISSN:
0030-1299
Subject:
Neotropics; biodiversity; birds; databases; diet; frugivores; fruits; mammals; seed dispersal; seeds; viability
Abstract:
... Frugivory and seed dispersal are key processes for the maintenance of biodiversity. This is particularly true in the Neotropics, where most plant species depend on animals to disperse their seeds and most birds and mammals include fruits in their diets. We performed a continental‐scale literature review to build a database of interactions between neotropical fruits and fruit‐eating birds and mamma ...
DOI:
10.1111/oik.04774

4. Environmentally and behaviourally mediated co‐occurrence of functional traits in bird communities of tropical forest fragments

Author:
Ulrich, Werner; Banks‐Leite, Cristina; De Coster, Greet; Habel, Jan Christian; Matheve, Hans; Newmark, William D.; Tobias, Joseph A.; Lens, Luc
Source:
Oikos 2018 v.127 no.2 pp. 274-284
ISSN:
0030-1299
Subject:
environmental factors; environmental impact; habitat fragmentation; interspecific competition; landscapes; neotropical birds; phylogeny; prediction; territoriality; tropical forests
Abstract:
... Two major theories of community assembly – based on the assumption of ‘limiting similarity’ or ‘habitat filtering’, respectively – predict contrasting patterns in the spatial arrangement of functional traits. Previous analyses have made progress in testing these predictions and identifying underlying processes, but have also pointed to theoretical as well as methodological shortcomings. Here we ap ...
DOI:
10.1111/oik.04561

5. Environmental stability increases relative individual specialisation across populations of an aquatic top predator

Author:
Dermond, Philip; Thomas, Stephen M.; Brodersen, Jakob
Source:
Oikos 2018 v.127 no.2 pp. 297-305
ISSN:
0030-1299
Subject:
Salmo trutta; diet; groundwater; muscle tissues; niches; stable isotopes; stomach; streams; surface water
Abstract:
... The concept of the niche has long been a central pillar in ecological theory, with a traditional focus on quantifying niches at the species or population level. However, the importance of individual‐level niche variation is increasingly being recognised, with a strong focus on individual specialisation. While examples illustrating the contribution of the individual niche to whole population niche ...
DOI:
10.1111/oik.04578

6. Female butterflies modulate investment in reproduction and flight in response to monsoon‐driven migrations

Author:
Bhaumik, Vaishali; Kunte, Krushnamegh
Source:
Oikos 2018 v.127 no.2 pp. 285-296
ISSN:
0030-1299
Subject:
aposematic species; behavior change; butterflies; diapause; females; flight; flight muscles; life history; males; migratory behavior; migratory species; mimicry (behavior); phenotype; phenotypic plasticity; reproduction; sexual dimorphism
Abstract:
... Migratory species may display striking phenotypic plasticity during individual lifetimes. This may include differential investment in body parts and functions, differential resource use and allocation, and behavioural changes between migratory and non‐migratory phases. While migration‐related phenotypic changes are well‐reported, their underlying mechanisms are usually poorly understood. Here we c ...
DOI:
10.1111/oik.04593

7. Interactions retain the co‐phylogenetic matching that communities lost

Author:
Poisot, Timothée; Stouffer, Daniel B.
Source:
Oikos 2018 v.127 no.2 pp. 230-238
ISSN:
0030-1299
Subject:
animal ecology; community structure; habitats; phylogeny
Abstract:
... Both species and their interactions are affected by changes that occur at evolutionary time‐scales, and these changes shape both ecological communities and their phylogenetic structure. That said, extant ecological community structure is contingent upon random chance, environmental filters and local effects. It is therefore unclear how much ecological signal local communities should retain. Here w ...
DOI:
10.1111/oik.03788

8. Modelling the niche space of desert annuals needs to include positive interactions

Author:
Filazzola, Alessandro; Sotomayor, Diego A.; Lortie, Christopher J.
Source:
Oikos 2018 v.127 no.2 pp. 264-273
ISSN:
0030-1299
Subject:
annuals; biocenosis; biodiversity; biogeography; climate change; databases; deserts; environmental factors; microclimate; models; shrubs; California; Mojave Desert
Abstract:
... The niche is a necessary consideration when estimating habitable area and geographic range of a species. Modellers often examine the fundamental niche and the environmental requirements for plant species, ignoring interactions among species. In deserts, positive plant interactions are important drivers of biodiversity and structure communities through many mechanistic pathways including modifying ...
DOI:
10.1111/oik.04688

9. On the inconsistency of pollinator species traits for predicting either response to land‐use change or functional contribution

Author:
Bartomeus, Ignasi; Cariveau, Daniel P.; Harrison, Tina; Winfree, Rachael
Source:
Oikos 2018 v.127 no.2 pp. 306-315
ISSN:
0030-1299
Subject:
bees; biodiversity; blueberries; body size; cranberries; crops; ecological function; land use change; pollination; pollinators; prediction; watermelons; United States
Abstract:
... The response and effect trait framework, if supported empirically, would provide for powerful and general predictions about how biodiversity loss leads to loss in ecosystem function. This framework proposes that species traits will explain how different species respond to disturbance (i.e. response traits) as well as their contribution to ecosystem function (i.e. effect traits). However, predictiv ...
DOI:
10.1111/oik.04507

10. Phenotypic effects of the nurse Thylacospermum caespitosum on dependent plant species along regional climate stress gradients

Author:
Jiang, Xingpei; Michalet, Richard; Chen, Shuyan; Zhao, Liang; Wang, Xiangtai; Wang, Chenyue; An, Lizhe; Xiao, Sa
Source:
Oikos 2018 v.127 no.2 pp. 252-263
ISSN:
0030-1299
Subject:
alpine plants; climate; cold stress; drought; dry environmental conditions; mountains; phenotype; plant communities; plant response; species diversity; temperature; topography; water stress; China
Abstract:
... Contrasting phenotypes of alpine cushion species have been recurrently described in several mountain ranges along small‐scale topography gradients, with tight competitive phenotypes in stressful convex topography and loose facilitative phenotypes in sheltered concave topography. The consistency of phenotypic effects along large‐scale climate stress gradients have been proposed as a test of the lik ...
DOI:
10.1111/oik.04512

11. Plant diversity induces shifts in the functional structure and diversity across trophic levels

Author:
Ebeling, Anne; Rzanny, Michael; Lange, Markus; Eisenhauer, Nico; Hertzog, Lionel R.; Meyer, Sebastian T.; Weisser, Wolfgang W.
Source:
Oikos 2018 v.127 no.2 pp. 208-219
ISSN:
0030-1299
Subject:
arthropod communities; body size; carnivores; community structure; ecosystems; functional diversity; herbivores; omnivores; predation; species diversity; trophic levels; vegetation
Abstract:
... Changes to primary producer diversity can cascade up to consumers and affect ecosystem processes. Although the effect of producer diversity on higher trophic groups have been studied, these studies often quantify taxonomy‐based measures of biodiversity, like species richness, which do not necessarily reflect the functioning of these communities. In this study, we assess how plant species richness ...
DOI:
10.1111/oik.04210

12. Plant genotype identity and diversity interact with mesograzer species diversity to influence detrital consumption in eelgrass meadows

Author:
Reynolds, Laura K.; Chan, Kendra M.; Huynh, Elena; Williams, Susan L.; Stachowicz, John J.
Source:
Oikos 2018 v.127 no.2 pp. 327-336
ISSN:
0030-1299
Subject:
Amphipoda; Polychaeta; Zostera marina; clones; detritus; ecosystems; food webs; genetic variation; genotype; leaves; macroalgae; macroinvertebrates; meadows; nitrogen; nutritive value; palatability; phenolic compounds; seagrasses; secondary metabolites; secondary productivity; species diversity; texture; California
Abstract:
... Seagrass meadows are among the world's most productive ecosystems, and as in many other systems, genetic diversity is correlated with increased production. However, only a small fraction of seagrass production is directly consumed, and instead much of the secondary production is fueled by the detrital food web. Here, we study the roles of plant genetic diversity and grazer species diversity on det ...
DOI:
10.1111/oik.04471

13. Prediction in ecology: promises, obstacles and clarifications

Author:
Maris, Virginie; Huneman, Philippe; Coreau, Audrey; Kéfi, Sonia; Pradel, Roger; Devictor, Vincent
Source:
Oikos 2018 v.127 no.2 pp. 171-183
ISSN:
0030-1299
Subject:
biodiversity; decision making; ecosystems; global change; models; prediction; scientists; socioeconomics
Abstract:
... In the current context of global change and a biodiversity crisis, there are increasing demands for greater predictive power in ecology, in both the scientific literature and at the science–policy interface. The implicit assumption is that this will increase knowledge and, in turn, lead to better decision‐making. However, the justification for this assumption remains uncertain, not least because t ...
DOI:
10.1111/oik.04655

14. Species traits as drivers of food web structure

Author:
Laigle, Idaline; Aubin, Isabelle; Digel, Christoph; Brose, Ulrich; Boulangeat, Isabelle; Gravel, Dominique
Source:
Oikos 2018 v.127 no.2 pp. 316-326
ISSN:
0030-1299
Subject:
animal characteristics; community structure; data collection; ecosystems; food webs; functional diversity; soil biota; statistical analysis; statistical models; taxonomy; variance
Abstract:
... The use of functional traits to describe community structure is a promising approach to reveal generalities across organisms and ecosystems. Plant ecologists have demonstrated the importance of traits in explaining community structure, competitive interactions as well as ecosystem functioning. The application of trait‐based methods to more complex communities such as food webs is however more chal ...
DOI:
10.1111/oik.04712

15. Temporal carry‐over effects in sequential plant–soil feedbacks

Author:
Wubs, E. R. Jasper; Bezemer, T. Martijn
Source:
Oikos 2018 v.127 no.2 pp. 220-229
ISSN:
0030-1299
Subject:
Jacobaea vulgaris; biomass; greenhouse experimentation; soil; soil-plant interactions; variance
Abstract:
... Plant–soil feedbacks (PSF) strongly influence plant performance. However, to what extent these PSF effects are persistent in the soil and how they are altered by species that subsequently condition the soil is unclear. Here we test how conspecific and heterospecific soil‐conditioning effects interact across different soil‐conditioning phases. We conducted a fully factorial glasshouse experiment wh ...
DOI:
10.1111/oik.04526