scholarly journals Interactive effects of predation risk and conspecific density on the nutrient stoichiometry of prey

2015 ◽  
Vol 5 (21) ◽  
pp. 4747-4756 ◽  
Author(s):  
Rafael D. Guariento ◽  
Luciana S. Carneiro ◽  
Jaqueiuto S. Jorge ◽  
Angélica N. Borges ◽  
Francisco A. Esteves ◽  
...  
Keyword(s):  
Predation Risk ◽  
Interactive Effects ◽  
Nutrient Stoichiometry ◽  
Conspecific Density

Food supplementation and predation risk in harsh climate: interactive effects on abundance and body condition of tit species

Oikos ◽  
2016 ◽  
Vol 126 (6) ◽  
pp. 863-873 ◽  
Author(s):  
Chiara Morosinotto ◽  
Alexandre Villers ◽  
Rauno Varjonen ◽  
Erkki Korpimäki
Keyword(s):  
Predation Risk ◽  
Body Condition ◽  
Interactive Effects ◽  
Food Supplementation ◽  
Harsh Climate

scholarly journals Interactive effects of reproductive assets and ambient predation risk on the threat-sensitive decisions of Trinidadian guppies

2016 ◽  
Vol 62 (3) ◽  
pp. 221-226 ◽  
Author(s):  
Jemma Katwaroo-Andersen ◽  
Chris K. Elvidge ◽  
Indar Ramnarine ◽  
Grant E. Brown
Keyword(s):  
Predation Risk ◽  
Interactive Effects

scholarly journals The interactive effects of competition and predation risk on dispersal in an insect

2014 ◽  
Vol 10 (6) ◽  
pp. 20140287 ◽  
Author(s):  
Celina B. Baines ◽  
Shannon J. McCauley ◽  
Locke Rowe
Keyword(s):  
Predation Risk ◽  
Intraspecific Competition ◽  
Aquatic Insects ◽  
Ecological Factors ◽  
Factorial Experiment ◽  
Interactive Effects ◽  
Factorial Experiments ◽  
Evolutionary Processes ◽  
Factors Affecting ◽  
Ecological Conditions

Dispersal dynamics have significant consequences for ecological and evolutionary processes. Previous work has demonstrated that dispersal can be context-dependent. However, factors affecting dispersal are typically considered in isolation, despite the probability that individuals make dispersal decisions in response to multiple, possibly interacting factors. We examined whether two ecological factors, predation risk and intraspecific competition, have interactive effects on dispersal dynamics. We performed a factorial experiment in mesocosms using backswimmers ( Notonecta undulata ), flight-capable, semi-aquatic insects. Emigration rates increased with density, and increased with predation risk at intermediate densities; however, predation had minimal effects on emigration at high and low densities. Our results indicate that factorial experiments may be required to understand dispersal dynamics under realistic ecological conditions.

scholarly journals Responses to nitrate pollution, warming and density in common frog tadpoles (Rana temporaria)

2016 ◽  
Vol 37 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Andrés Egea-Serrano ◽  
Josh Van Buskirk
Keyword(s):  
Rana Temporaria ◽  
Interactive Effects ◽  
Common Frog ◽  
Conspecific Density ◽  
Environmental Perturbations ◽  
Higher Temperature ◽  
Larval Crowding ◽  
Pulsed Treatment ◽  
Reduced Activity ◽  
Treatment Application

Amphibians face a variety of anthropogenic environmental perturbations that could act alone or in combination to influence population size. We investigated interactive effects of warming conditions, a moderate pulse of nitrogen pollution, and conspecific density on larvae of the common frog, Rana temporaria. The 16-day experiment had a 2 × 2 × 2 factorial design implemented in 80-l outdoor mesocosms. High density and warm temperature both resulted in reduced activity and visibility; tadpoles grew and developed more quickly at low density and high temperature. The high-nitrogen treatment did not influence behavior, growth, or development rate. We attribute this to several realistic features of our study, including a pulsed treatment application and natural denitrification within the mesocosms. There was only a single interaction among the three factors: higher temperature exacerbated density-dependence in growth rate. These results illustrate that climate warming may benefit temperate amphibians, although the benefits may be counteracted by enhanced larval crowding.

scholarly journals Interactive effects of shelter and conspecific density shape mortality, growth, and condition in juvenile reef fish

Ecology ◽  
2016 ◽  
Vol 97 (6) ◽  
pp. 1373-1380 ◽  
Author(s):  
John R. Ford ◽  
Jeffrey S. Shima ◽  
Stephen E. Swearer
Keyword(s):  
Reef Fish ◽  
Interactive Effects ◽  
Conspecific Density ◽  
Juvenile Reef Fish

The Interactive Effects of Fish Predation and Conspecific Density on Survival and Growth of Tadpoles ofRana sylvaticain a Subarctic Wetland

Copeia ◽  
2016 ◽  
Vol 104 (3) ◽  
pp. 639-644 ◽  
Author(s):  
Jon M. Davenport ◽  
Phillip A. Seiwert ◽  
LeeAnn Fishback ◽  
W. Ben Cash
Keyword(s):  
Fish Predation ◽  
Interactive Effects ◽  
Conspecific Density ◽  
Survival And Growth

scholarly journals Parental and embryonic experiences with predation risk affect prey offspring behaviour and performance

2018 ◽  
Vol 285 (1874) ◽  
pp. 20180034 ◽  
Author(s):  
Sarah C. Donelan ◽  
Geoffrey C. Trussell
Keyword(s):  
Predation Risk ◽  
Interactive Effects ◽  
Offspring Performance ◽  
Environmental Signals ◽  
Parental Experience ◽  
Natural Systems ◽  
History Of ◽  
And Performance ◽  
Independent Effects ◽  
Current Risk

Because phenotypic plasticity can operate both within and between generations, phenotypic outcomes are often shaped by a complex history of environmental signals. For example, parental and embryonic experiences with predation risk can both independently and interactively influence prey offspring traits early in their life. Parental and embryonic risk experiences can also independently shape offspring phenotypes throughout an offspring's ontogeny, but the persistence of their interactive effects throughout offspring ontogeny is unknown. We examined the effects of parental and embryonic experiences with predation risk on the response of 1-year-old prey (the carnivorous snail, Nucella lapillus ) offspring to current predation risk. We found that parental and embryonic risk experiences had largely independent effects on offspring performance and that these effects were context dependent. Parental experience with risk had strong impacts on multiple offspring traits in the presence of current risk that generally improved offspring performance under risk, but embryonic risk experience had relatively weaker effects and only operated in the absence of current risk to reduce offspring growth. These results illustrate that past environmental experiences can dynamically shape organism phenotypes across ontogeny and that attention to these effects is key to a better understanding of predator/prey dynamics in natural systems.

Sign in / Sign up

Export Citation Format

Share Document