Effects of Multiple, Predator‐Induced Behaviors on Short‐term Producer‐Grazer Dynamics in Open Systems

Diehl, Sebastian; Cooper, Scott D.; Kratz, Kim W.; Nisbet, Roger M.; Roll, Sandra K.; Wiseman, Sheila W.; Jenkins, Thomas M.

doi:10.1086/303390

Cited by 86 publications

(73 citation statements)

References 58 publications

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“…While it is known that predation may have localized effects on drift concentration (i.e., causes depletion immediately downstream of a fishes focal point; Hughes 1992; Hayes et al 2007), an implicit assumption of most drift-foraging models is that there are no active feedbacks from predation on drifting invertebrate behaviour or populations (i.e., drift-feeding is assumed to be donor-controlled). Several studies have failed to detect an effect of drift-feeding fish on the benthos (Allan 1982;Dahl and Greenberg 1996); however, there is some evidence that predation on drift may have top-down effects (Forrester 1994;Diehl et al 2000;Meissner and Muotka 2006), and the ability of trout to consume a significant fraction of benthic production is well documented (e.g., Huryn 1996). Incorporating a major feedback between predation and drift production (entry rates) could substantially alter current drift-foraging modelling approaches.…”

Section: Consequences Of Drift Variation For Energy Flux To Fishmentioning

confidence: 99%

Causes and consequences of invertebrate drift in running waters: from individuals to populations and trophic fluxes

Naman

Rosenfeld

Richardson

2016

Can. J. Fish. Aquat. Sci.

114

102

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Invertebrate drift, the downstream transport of aquatic invertebrates, is a fundamental ecological process in streams with important management implications for drift-feeding fishes. Despite long-standing interest, many aspects of drift remain poorly understood mechanistically, thereby limiting broader food web applications (e.g., bioenergetics-based habitat models for fish). Here, we review and synthesize drift-related processes, focusing on their underlying causes, consequences for invertebrate populations and broader trophic dynamics, and recent advances in predictive modelling of drift. Improving predictive models requires further resolving the environmental contexts where drift is driven by hydraulics (passive drift) versus behaviour (active drift). We posit this can be qualitatively inferred by hydraulic conditions, diurnal periodicity, and taxa-specific traits. For invertebrate populations, while the paradox of population persistence in the context of downstream loss has been generally resolved with theory, there are still many unanswered questions surrounding the consequences of drift for population dynamics. In a food web context, there is a need to better understand drift-foraging consumer-resource dynamics and to improve modelling of drift fluxes to more realistically assess habitat capacity for drift-feeding fishes.Résumé : La dérive d'invertébrés, soit le transport vers l'aval d'invertébrés aquatiques, est un processus écologique fondamental dans les cours d'eau qui a d'importantes conséquences pour les poissons qui se nourrissent d'aliments à la dérive. Malgré un intérêt de longue date, de nombreux aspects de la dérive demeurent mal compris d'un point de vue mécaniste, ce qui limite les applications plus larges des réseaux trophiques (p. ex. les modèles d'habitat reposant sur la bioénergétique pour les poissons). Nous passons en revue et résumons les processus associés à la dérive, en mettant l'accent sur leurs causes sous-jacentes, les conséquences pour les populations d'invertébrés et la dynamique trophique plus large, ainsi que les avancées récentes en modélisation prédictive de la dérive. L'amélioration des modèles prédictifs nécessite une meilleure résolution des milieux dans lesquels la dérive est mue, d'une part, par l'hydraulique (dérive passive) ou, d'autre part, par le comportement (dérive active). Nous postulons que cela peut être inféré de manière qualitative à partir des conditions hydrauliques, de la périodicité diurne et de caractères propres aux taxons. Pour les populations d'invertébrés, si le paradoxe de la persistance des populations dans le contexte de perte en aval a généralement été résolu en faisant appel à la théorie, de nombreuses questions demeurent quant aux conséquences de la dérive pour la dynamique des populations. Dans un contexte de réseaux trophiques, il est nécessaire de mieux comprendre la dynamique dérive-consommateur s'alimentant-ressource et d'améliorer la modélisation des flux de dérive pour évaluer de manière plus réaliste la capacité des habitats p...

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Section: Consequences Of Drift Variation For Energy Flux To Fishmentioning

confidence: 99%

Causes and consequences of invertebrate drift in running waters: from individuals to populations and trophic fluxes

Naman

Rosenfeld

Richardson

2016

Can. J. Fish. Aquat. Sci.

114

102

View full text Add to dashboard Cite

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“…Many studies have shown that epibenthic, drift-prone grazers such as Baetis spp. often face high predation risk from predators such as trout (Diehl et al, 2000;De Crespin De Billy and Usseglio-Polatera 2002). Often, macroinvertebrates within invaded habitats tend to exhibit predator avoidance behaviour that is shown by their low densities in patches where predation is likely to be high .…”

Section: Trichopteramentioning

confidence: 99%

The impact of non-native rainbow trout within Afro-montane streams in eastern Zimbabwe

et al. 2013

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Non-native trout species have been associated with many negative effects in receiving ecosystems. The first aim of this study was to determine the impact of non-native rainbow trout Oncorhynchus mykiss on distribution and abundance of native mountain catfish Amphilius uranoscopus within Afro-montane streams in Nyanga Mountains, eastern Zimbabwe. The second aim was to compare macroinvertebrate community responses to the presence of the trout and the catfish. We examined trout impact on catfish's habitat associations, whereas macro-invertebrate composition was compared using open fish and fish exclosure experiments in habitats with and without trout. Trout influenced both the distribution and abundance of the catfish that occupied shallow reaches possibly to avoid predation from trout that occurred in the deeper habitats. Within trout invaded reaches, most macro-invertebrate taxa were more abundant in exclosure than open treatments. By contrast, within trout-free reaches, most macro-invertebrates either did not differ between treatments or were generally more abundant in open than exclosure treatments. This suggests that the macro-invertebrate communities responded differently within invaded and non-invaded reaches. By influencing distribution and abundance of native biota, non-native rainbow trout may have wider ecological effects, such as influencing trophic interrelationships within invaded habitats.

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“…In the majority of cases (Hassell 1971;Bernstein 1984;Kratz 1996;Maeda et al 1998;Zemek and Nachman 1998;Diehl et al 2000;French and Travis 2001;Hauzy et al 2007;Ohara and Takabayashi 2012), were the strength of the observed density dependence within the range for which our covariance approximation is accurate.…”

Section: Empirical Emigration-rate Responsesmentioning

confidence: 69%

Population-level consequences of heterospecific density-dependent movements in predator–prey systems

Sjödin

Brännström

Söderquist

et al. 2014

Journal of Theoretical Biology

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In this paper we elucidate how small-scale movements, such as those associated with searching for food and avoiding predators, affect the stability of predator-prey dynamics. We investigate an individual-based Lotka-Volterra model with density dependent movement, in which the predator and prey populations live in a very large number of coupled patches. The rates at which individuals leave patches depend on the local densities of heterospecifics, giving rise to one reaction norm for each of the two species. Movement rates are assumed to be much faster than demographics rates. A spatial structure of predators and prey emerges which affects the global population dynamics. We derive a criterion which reveals how demographic stability depends on the relationships between the per capita covariance and densities of predators and prey. Specifically, we establish that a positive relationship with prey density and a negative relationship with predator density tend to be stabilizing. On a more mechanistic level we show how these relationships are linked to the movement reaction norms of predators and prey. Numerical results show that these findings hold both for local and global movements, i.e., both when migration is biased towards neighboring patches and when all patches are reached with equal probability.

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Effects of Multiple, Predator‐Induced Behaviors on Short‐term Producer‐Grazer Dynamics in Open Systems

Cited by 86 publications

References 58 publications

Causes and consequences of invertebrate drift in running waters: from individuals to populations and trophic fluxes

Causes and consequences of invertebrate drift in running waters: from individuals to populations and trophic fluxes

The impact of non-native rainbow trout within Afro-montane streams in eastern Zimbabwe

Population-level consequences of heterospecific density-dependent movements in predator–prey systems

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