scholarly journals Environmental stress gradients regulate the relative importance of predator density‐ and trait‐mediated indirect effects in oyster reef communities

2020 ◽  
Author(s):  
Jessica L. Pruett ◽  
Marc J. Weissburg
Keyword(s):  
Environmental Stress ◽  
Indirect Effects ◽  
Oyster Reef ◽  
Relative Importance ◽  
Predator Density ◽  
Stress Gradients ◽  
Reef Communities

Subdimensions of total rewards satisfaction and creativity among R&D employees: a moderated mediation model

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Zhenyuan Wang ◽  
Jianghong Du ◽  
Herman H.M. Tse ◽  
Jun Gu ◽  
Hui Meng ◽  
...  
Keyword(s):  
Work Stress ◽  
Work Engagement ◽  
Indirect Effects ◽  
Moderated Mediation ◽  
Relative Importance ◽  
Mediation Model ◽  
Content Type ◽  
Moderated Mediation Model ◽  
Total Rewards

PurposeThis study aims to explore the relative importance of the subdimensions of total rewards satisfaction in predicting research and development (R&D) employee creativity. In addition, the study examines the indirect effects of the subdimensions of total rewards satisfaction on creativity via work engagement and the moderating role of challenge-related work stress in the first stage.Design/methodology/approachA two-wave design was used, in which total rewards satisfaction and challenge-related work stress were measured in the first wave. Work engagement and creativity were measured in the second wave. Dominance analysis and the latent moderated mediation model were used for the data analyses.FindingsThe analyses show that nonfinancial rewards satisfaction completely dominates indirect and direct financial rewards satisfaction when predicting creativity. Indirect financial rewards satisfaction completely dominates direct financial rewards satisfaction when predicting creativity. Work engagement mediates the relationships between the subdimensions of total rewards satisfaction and creativity. Challenge-related work stress moderates the relationships between the subdimensions of total rewards satisfaction and work engagement and the indirect effects of the subdimensions of total rewards satisfaction on creativity via work engagement.Practical implicationsThe results imply that managers should set challenge demands for R&D employees and try to improve their total rewards satisfaction, especially their nonfinancial and indirect financial rewards satisfaction, for them to be more creative.Originality/valueThis empirical study contributes to the literature by comparing the relative importance of the different dimensions of total rewards satisfaction in predicting creativity. The study also clarifies how (through work engagement) and when (based on challenge-related work stress) the subdimensions of total rewards satisfaction are positively related to R&D employees' creativity.

Indirect effects and facilitation among native and non-native species promote invasion success along an environmental stress gradient

2013 ◽  
Vol 101 (4) ◽  
pp. 905-915 ◽  
Author(s):  
Phoebe L. Zarnetske ◽  
Tarik C. Gouhier ◽  
Sally D. Hacker ◽  
Eric W. Seabloom ◽  
Vrushali A. Bokil
Keyword(s):  
Environmental Stress ◽  
Indirect Effects ◽  
Native Species ◽  
Stress Gradient ◽  
Invasion Success

scholarly journals The relative importance of direct and indirect effects of hunting mortality on the population dynamics of brown bears

2015 ◽  
Vol 282 (1798) ◽  
pp. 20141840 ◽  
Author(s):  
Jacinthe Gosselin ◽  
Andreas Zedrosser ◽  
Jon E. Swenson ◽  
Fanie Pelletier
Keyword(s):  
Population Dynamics ◽  
Population Growth ◽  
Indirect Effects ◽  
Ursus Arctos ◽  
Brown Bear ◽  
Relative Importance ◽  
Direct And Indirect Effects ◽  
Negative Effects ◽  
Hunting Pressure ◽  
Demographic Rates

There is increasing evidence of indirect effects of hunting on populations. In species with sexually selected infanticide (SSI), hunting may decrease juvenile survival by increasing male turnover. We aimed to evaluate the relative importance of direct and indirect effects of hunting via SSI on the population dynamics of the Scandinavian brown bear ( Ursus arctos ). We performed prospective and retrospective demographic perturbation analyses for periods with low and high hunting pressures. All demographic rates, except yearling survival, were lower under high hunting pressure, which led to a decline in population growth under high hunting pressure ( λ = 0.975; 95% CI = 0.914–1.011). Hunting had negative indirect effects on the population through an increase in SSI, which lowered cub survival and possibly also fecundity rates. Our study suggests that SSI could explain 13.6% of the variation in population growth. Hunting also affected the relative importance of survival and fecundity of adult females for population growth, with fecundity being more important under low hunting pressure and survival more important under high hunting pressure. Our study sheds light on the importance of direct and indirect effects of hunting on population dynamics, and supports the contention that hunting can have indirect negative effects on populations through SSI.

Impacts of salinity and freshwater inflow on oyster-reef communities in Southwest Florida

2006 ◽  
Vol 19 (4) ◽  
pp. 371-387 ◽  
Author(s):  
S. Gregory Tolley ◽  
Aswani K. Volety ◽  
Michael Savarese ◽  
Laura D. Walls ◽  
Christi Linardich ◽  
...  
Keyword(s):  
Oyster Reef ◽  
Freshwater Inflow ◽  
Southwest Florida ◽  
Reef Communities

Tracking environmental stress gradients using three biotic integrity indices: Advantages of a locally-developed traits-based approach

2013 ◽  
Vol 34 ◽  
pp. 560-570 ◽  
Author(s):  
I.F. Rodil ◽  
A.M. Lohrer ◽  
J.E. Hewitt ◽  
M. Townsend ◽  
S.F. Thrush ◽  
...  
Keyword(s):  
Environmental Stress ◽  
Biotic Integrity ◽  
Stress Gradients

scholarly journals COMPONENTS OF YIELD OF RECOVERABLE SUGAR IN RANDOM AND IMPROVED SUGARBEET POPULATIONS

1973 ◽  
Vol 53 (3) ◽  
pp. 665-670 ◽  
Author(s):  
G. A. SMITH ◽  
R. J. HECKER
Keyword(s):  
Genetic Structure ◽  
Indirect Effects ◽  
Yield Component ◽  
Hybrid Population ◽  
Path Coefficient ◽  
Root Weight ◽  
Relative Importance ◽  
Breeding Programs ◽  
Commercial Population ◽  
Unselected Population

Path coefficient analyses indicated that the components of recoverable sugar yield rank differently in relative importance in improved populations of sugarbeet (Beta vulgaris L.) than in relatively unimproved populations. Root weight was a more important yield component than sucrose percentage and over twice as important as purity in unselected populations. Root weight and sucrose percentage contributed about equally in improved populations, but the importance of both to recoverable sugar was substantially greater than in the unselected population. Purity was about twice as important a component in the improved population as it was in the unselected population. Results suggest that the emphasis of breeding programs will need to change with changes in the genetic structure of the improved population. Because of the lack of negative indirect effects in the commercial population, the association of recoverable sugar and sucrose percent was nearly twice as high as compared to the relatively unimproved random hybrid population.

scholarly journals Relative influence of direct and indirect environmental effects on sestonic chlorophyll-a concentration in Cerrado streams

2015 ◽  
Vol 27 (3) ◽  
pp. 301-310 ◽  
Author(s):  
Pedro Paulino Borges ◽  
Fabrício Barreto Teresa ◽  
Patrick Thomaz de Aquino Martins ◽  
João Carlos Nabout
Keyword(s):  
Chlorophyll A ◽  
Primary Productivity ◽  
Indirect Effects ◽  
Important Variable ◽  
Native Vegetation ◽  
Aquatic Environments ◽  
Relative Importance ◽  
Direct And Indirect Effects ◽  
Chlorophyll A Concentration ◽  
Land Use And Cover

Abstract Aim: Chlorophyll-a may be directly influenced by local variables and/or indirectly by land use and cover, once landscape modifications change limnological variables, which in turn affect the primary productivity of aquatic environments, e.g., streams. Therefore, the objective of this study was to determine the relative importance of the local and landscape environmental components and assess the direct and indirect effects of these variables on sestonic chlorophyll-a concentration in 30 Cerrado streams (Santa Teresa River basin). Results All aquatic environments were oligotrophic during the study period. Only the local variables were important to explain chlorophyll-a variation (R2 = 0.27; P = 0.04). In addition, the path analysis showed that all variables used in the analysis influenced chlorophyll-a concentration more directly than indirectly. Conductivity was the most important variable to directly influence chlorophyll-a, followed by turbidity. Conclusion The large amount of remnant native vegetation in the basin indicates that the region studied is well preserved, which may explain the greater importance of local variables and the low effect of the landscape in explaining chlorophyll-a variation.

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