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1. Generalist predator, cyclic voles and cavity nests: testing the alternative prey hypothesis

Author:
Pöysä, Hannu; Jalava, Kaisa; Paasivaara, Antti
Source:
Oecologia 2016 v.182 no.4 pp. 1083-1093
ISSN:
0029-8549
Subject:
predators,   etc   ; Bucephala; Clethrionomys glareolus; Martes martes; Microtus agrestis; Microtus arvalis; autumn; correlation; nests; predation; probability; spring; voles; Finland;     Show all 14 Subjects
Abstract:
... The alternative prey hypothesis (APH) states that when the density of the main prey declines, generalist predators switch to alternative prey and vice versa, meaning that predation pressure on the alternative prey should be negatively correlated with the density of the main prey. We tested the APH in a system comprising one generalist predator (pine marten, Martes martes), cyclic main prey (microt ...
DOI:
10.1007/s00442-016-3728-9

2. Indirect effects of the generalist avian predator, the goshawk, on life history of an uncommon prey species, the stock dove

Author:
Møller, Anders Pape; Flensted-Jensen, Einar; Nielsen, Jan Tøttrup
Source:
Oecologia 2016 v.182 no.4 pp. 1045-1052
ISSN:
0029-8549
Subject:
predator-prey relationships; predators,   etc   ; Accipiter gentilis; Columba oenas; birds; breeding; climate; climate change; clutch size; eggs; hatching; life history; population growth; population size; predation; progeny; temperature; wind speed; Denmark;     Show all 19 Subjects
Abstract:
... Predators account for lethal effects in their prey, but importantly also for non-lethal indirect effects through the presence and the activity of predators. Such non-lethal effects include altered timing of reproduction, incidence of reproduction, clutch size and quality of offspring produced. We investigated the effects of goshawks Accipiter gentilis on reproduction of the stock dove Columba oena ...
DOI:
10.1007/s00442-016-3709-z

3. Understory avifauna exhibits altered mobbing behavior in tropical forest degraded by selective logging

Author:
Hua, Fangyuan; Sieving, Kathryn E.
Source:
Oecologia 2016 v.182 no.3 pp. 743-754
ISSN:
0029-8549
Subject:
predator-prey relationships,   etc   ; Strigiformes; antipredatory behavior; biodiversity; birds of prey; energy; foraging; logging; predation; rain forests; risk; tropical forests; understory; Indonesia;     Show all 14 Subjects
Abstract:
... In understanding the impacts of selective logging on biodiversity, relatively little is known about the critical behavioral link between altered forest conditions and population persistence. Predator-mobbing is a widespread anti-predator behavior in birds that expresses a well-known trade-off influencing prey survival under predation risk. Here, we ask whether the predator-mobbing behavior of unde ...
DOI:
10.1007/s00442-016-3695-1

4. Guardian or threat: does golden eagle predation risk have cascading effects on forest grouse?

Author:
Lyly, Mari S.; Villers, Alexandre; Koivisto, Elina; Helle, Pekka; Ollila, Tuomo; Korpimäki, Erkki
Source:
Oecologia 2016 v.182 no.2 pp. 487-498
ISSN:
0029-8549
Subject:
predators,   etc   ; Aquila chrysaetos; Lyrurus tetrix; Martes martes; Tetrastes bonasia; Vulpes vulpes; adults; correlation; eagles; fearfulness; forests; foxes; grouse; herbivores; juveniles; nests; predation; risk; terrestrial ecosystems; wildlife; Finland; Northern European region;     Show all 22 Subjects
Abstract:
... Previous studies on intraguild predation have mainly focused on within-class assemblages, even though avian top predators may also influence mammalian mesopredator prey. By using nation-wide long-term data from Finland, northern Europe, we examined the impacts of golden eagles (Aquila chrysaetos) together with red foxes (Vulpes vulpes) and pine martens (Martes martes) on forest-dwelling herbivores ...
DOI:
10.1007/s00442-016-3680-8

5. Floral asymmetry and predation risk modify pollinator behavior, but only predation risk decreases plant fitness

Author:
Antiqueira, Pablo Augusto Poleto; Romero, Gustavo Quevedo
Source:
Oecologia 2016 v.181 no.2 pp. 475-485
ISSN:
0029-8549
Subject:
predator-prey relationships; predators,   etc   ; Hymenoptera; Rubus rosifolius; Thomisidae; additive effect; avoidance behavior; biomass; flowers; herbivores; pollinators; predation; risk; shrubs;     Show all 14 Subjects
Abstract:
... Although predators and floral herbivores can potentially decrease plant fitness by changing pollinator behaviors, studies comparing the strength of these factors as well as their additive and interactive effects on pollinator visitation and plant fitness have not been conducted. In this study, we manipulated the floral symmetry and predator presence (artificial crab spiders) on the flowers of the ...
DOI:
10.1007/s00442-016-3564-y

6. Selective predation on hantavirus-infected voles by owls and confounding effects from landscape properties

Author:
Khalil, Hussein; Ecke, Frauke; Evander, Magnus; Hörnfeldt, Birger
Source:
Oecologia 2016 v.181 no.2 pp. 597-606
ISSN:
0029-8549
Subject:
predators,   etc   ; risk; zoonoses; seroprevalence; humans; landscapes; Orthohantavirus; antibodies; disease prevalence; hosts; Strigiformes; Clethrionomys glareolus; human health; nest boxes; voles; predation; fever; forests;     Show all 18 Subjects
Abstract:
... It has been suggested that predators may protect human health through reducing disease-host densities or selectively preying on infected individuals from the population. However, this has not been tested empirically. We hypothesized that Tengmalm’s owl (Aegolius funereus) selectively preys on hantavirus-infected individuals of its staple prey, the bank vole (Myodes glareolus). Bank voles are hosts ...
DOI:
10.1007/s00442-016-3580-y

7. Short- and long-term behavioural, physiological and stoichiometric responses to predation risk indicate chronic stress and compensatory mechanisms

Author:
Van Dievel, Marie; Janssens, Lizanne; Stoks, Robby
Source:
Oecologia 2016 v.181 no.2 pp. 347-357
ISSN:
0029-8549
Subject:
predators,   etc   ; carbon nitrogen ratio; energy; food intake; glucose; glycogen; growth retardation; larvae; life history; metabolism; nitrogen content; population dynamics; predation; proteins; risk; stoichiometry; stress response; temporal variation;     Show all 18 Subjects
Abstract:
... Prey organisms are expected to use different short- and long-term responses to predation risk to avoid excessive costs. Contrasting both types of responses is important to identify chronic stress responses and possible compensatory mechanisms in order to better understand the full impact of predators on prey life history and population dynamics. Using larvae of the damselfly Enallagma cyathigerum, ...
DOI:
10.1007/s00442-015-3440-1

8. Intraguild predation and competition impacts on a subordinate predator

Author:
Björklund, Heidi; Santangeli, Andrea; Blanchet, F. Guillaume; Huitu, Otso; Lehtoranta, Hannu; Lindén, Harto; Valkama, Jari; Laaksonen, Toni
Source:
Oecologia 2016 v.181 no.1 pp. 257-269
ISSN:
0029-8549
Subject:
predators,   etc   ; Accipiter gentilis; Buteo buteo; Strix; breeding; grouse; habitats; hawks; interspecific competition; nests; predation; risk; rodents; Finland;     Show all 14 Subjects
Abstract:
... Intraguild (IG) predation and interspecific competition may affect the settlement and success of species in their habitats. Using data on forest-dwelling hawks from Finland, we addressed the impact of an IG predator, the northern goshawk Accipiter gentilis (goshawk), on the breeding of an IG prey, the common buzzard Buteo buteo. We hypothesized that the subordinate common buzzard avoids breeding i ...
DOI:
10.1007/s00442-015-3523-z

9. Linking reproduction, locomotion, and habitat use in the Trinidadian guppy (Poecilia reticulata)

Author:
Banet, Amanda I.; Svendsen, Jon C.; Eng, Kevin J.; Reznick, David N.
Source:
Oecologia 2016 v.181 no.1 pp. 87-96
ISSN:
0029-8549
Subject:
predators,   etc   ; Poecilia reticulata; animals; females; habitat preferences; habitats; locomotion; predation; pregnancy; reproductive traits; risk; swimming; tail;     Show all 13 Subjects
Abstract:
... Pregnancy inhibits locomotion, increases predation risk and may translate into reduced survival. The extent to which animals modify behavior in the wild to compensate for the locomotor costs of pregnancy remains poorly understood. We have investigated how reproductive allocation (RA—the proportion of body mass devoted to reproduction) affects locomotor performance and habitat use in Trinidadian gu ...
DOI:
10.1007/s00442-015-3542-9

10. Contrasting effects of fish predation on benthic versus emerging prey: a meta-analysis

Author:
Wesner, Jeff S.
Source:
Oecologia 2016 v.180 no.4 pp. 1205-1211
ISSN:
0029-8549
Subject:
predator-prey relationships; predators,   etc   ; biomass; fish; freshwater ecosystems; insects; invertebrates; meta-analysis; predation; terrestrial ecosystems;     Show all 10 Subjects
Abstract:
... Predator–prey interactions are often studied entirely within the ecosystem of the predator. However, many prey transition between ecosystems during development, expanding the effects of predators across ecosystems. Prey are often vulnerable to predation during this transition, facing a predator gauntlet as they leave their source ecosystem. As a result of predation during this transition, predator ...
DOI:
10.1007/s00442-015-3539-4

11. Interference in the tundra predator guild studied using local ecological knowledge

Author:
Ehrich, Dorothee; Strømeng, Marita A.; Killengreen, Siw T.
Source:
Oecologia 2016 v.180 no.4 pp. 1195-1203
ISSN:
0029-8549
Subject:
predator control; predators,   etc   ; Canis lupus; Gulo gulo; Lynx lynx; Vulpes lagopus; Vulpes vulpes; ecosystems; environmental impact; foxes; information sources; interviews; models; people; predation; tundra; winter; wolves; Arctic region; Eurasia;     Show all 20 Subjects
Abstract:
... The decline or recolonization of apex predators such as wolves and lynx, often driven by management decisions, and the expansion of smaller generalist predators such as red foxes, can have important ecosystem impacts. The mesopredator release hypothesis proposes that apex predators control medium-sized predator populations through competition and/or intraguild predation. The decline of apex predat ...
DOI:
10.1007/s00442-015-3521-1

12. Natural and experimental tests of trophic cascades: gray wolves and white-tailed deer in a Great Lakes forest

Author:
Flagel, D. G.; Belovsky, G. E.; Beyer, D. E., Jr.
Source:
Oecologia 2016 v.180 no.4 pp. 1183-1194
ISSN:
0029-8549
Subject:
predators,   etc   ; Acer; Canis lupus; Odocoileus virginianus; community structure; deer; foraging; forbs; forests; herbivores; lakes; plant communities; predation; saplings; species diversity; wolves; Great Lakes;     Show all 17 Subjects
Abstract:
... Herbivores can be major drivers of environmental change, altering plant community structure and changing biodiversity through the amount and species of plants consumed. If natural predators can reduce herbivore numbers and/or alter herbivore foraging behavior, then predators may reduce herbivory on sensitive plants, and a trophic cascade will emerge. We have investigated whether gray wolves (Canis ...
DOI:
10.1007/s00442-015-3515-z

13. Do birds see the forest for the trees? Scale-dependent effects of tree diversity on avian predation of artificial larvae

Author:
Muiruri, Evalyne W.; Rainio, Kalle; Koricheva, Julia
Source:
Oecologia 2016 v.180 no.3 pp. 619-630
ISSN:
0029-8549
Subject:
predators,   etc   ; birds; foraging; forest ecosystems; forest trees; forests; invertebrates; larvae; phytophagous insects; predation; probability; species diversity; Finland;     Show all 13 Subjects
Abstract:
... The enemies hypothesis states that reduced insect herbivory in mixed-species stands can be attributed to more effective top–down control by predators with increasing plant diversity. Although evidence for this mechanism exists for invertebrate predators, studies on avian predation are comparatively rare and have not explicitly tested the effects of diversity at different spatial scales, even thoug ...
DOI:
10.1007/s00442-015-3391-6

14. Density-dependent prey mortality is determined by the spatial scale of predator foraging

Author:
McCarthy, Erin K.; White, J. Wilson
Source:
Oecologia 2016 v.180 no.2 pp. 305-311
ISSN:
0029-8549
Subject:
predator-prey relationships; predators,   etc   ; DDD (pesticide); Poecilia reticulata; foraging; habitats; mortality; population dynamics; predation; prediction; scientists;     Show all 11 Subjects
Abstract:
... Foraging theory predicts which prey patches predators should target. However, in most habitats, what constitutes a ‘patch’ and how prey density is calculated are subjective concepts and depend on the spatial scale at which the predator (or scientist) is observing. Moreover, the predator’s ‘foraging scale’ affects prey population dynamics: predators should produce directly density-dependent (DDD) p ...
DOI:
10.1007/s00442-015-3374-7

15. Top predators affect the composition of naive protist communities, but only in their early-successional stage

Author:
Zander, Axel; Gravel, Dominique; Bersier, Louis-Félix; Gray, Sarah M.
Source:
Oecologia 2016 v.180 no.2 pp. 519-528
ISSN:
0029-8549
Subject:
predators,   etc   ; Sarracenia; body size; community development; community structure; leaves; predation; Europe; North America;     Show all 9 Subjects
Abstract:
... Introduced top predators have the potential to disrupt community dynamics when prey species are naive to predation. The impact of introduced predators may also vary depending on the stage of community development. Early-succession communities are likely to have small-bodied and fast-growing species, but are not necessarily good at defending against predators. In contrast, late-succession communiti ...
DOI:
10.1007/s00442-015-3476-2

16. Dissecting the smell of fear from conspecific and heterospecific prey: investigating the processes that induce anti-predator defenses

Author:
Shaffery, Heather M.; Relyea, Rick A.
Source:
Oecologia 2016 v.180 no.1 pp. 55-65
ISSN:
0029-8549
Subject:
predators,   etc   ; Helisoma; Hyla versicolor; amphibians; biomass; byproducts; diet; digestion; digestive enzymes; fearfulness; mastication; phenotype; predation; risk; smell; snails; tadpoles; tail; temporal variation;     Show all 19 Subjects
Abstract:
... Prey use chemical cues from predation events to obtain information about predation risk to alter their phenotypes. Though we know how many prey respond to predators, we still have a poor understanding of the processes and chemical cues involved during a predation event. We examined how gray treefrog tadpoles (Hyla versicolor) altered their behavior and morphology when raised with cues from differe ...
DOI:
10.1007/s00442-015-3444-x