Stream Drift as a Chronobiological Phenomenon in Running Water Ecosystems

Müller, Karl

doi:10.1146/annurev.es.05.110174.001521

Cited by 181 publications

(84 citation statements)

References 63 publications

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“…In lotic ecosystems such as streams and rivers, the question of the persistence of a population subject to downstream dispersal has been referred to as the "drift paradox" and is mostly associated with drifting invertebrates such as mayfly, stonefly, caddisfly, and crustaceans which serve as a fish food source and are thus vital to the functioning of the ecosystem (Hershey et al, 1993;Müller, 1974). The same question of persistence has been considered for populations in the coastal ocean subject to tides and long-shore currents (Alexander and Roughgarden, 1996;Byers and Pringle, 2006;Gaines and Bertness, 1992).…”

Section: Introductionmentioning

confidence: 99%

Effects of Demographic Stochasticity on Population Persistence in Advective Media

Kolpas

Nisbet

2010

Bull. Math. Biol.

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Many populations live and disperse in advective media. A fundamental question, known as the "drift paradox" in stream ecology, is how a closed population can survive when it is constantly being transported downstream by the flow. Recent populationlevel models have focused on the role of diffusive movement in balancing the effects of advection, predicting critical conditions for persistence. Here, we formulate an individualbased stochastic analog of the model described in (Lutscher et al., SIAM Rev. 47(4):749-772, 2005) to quantify the effects of demographic stochasticity on persistence. Population dynamics are modeled as a logistic growth process and dispersal as a position-jump process on a finite domain divided into patches. When there is no correlation in the interpatch movement of residents, stochasticity simply smooths the persistence-extinction boundary. However, when individuals disperse in "packets" from one patch to another and the flow field is memoryless on the timescale of packet transport, the probability of persistence is greatly enhanced. The latter transport mechanism may be characteristic of larval dispersal in the coastal ocean or wind-dispersed seed pods.

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Section: Introductionmentioning

confidence: 99%

Effects of Demographic Stochasticity on Population Persistence in Advective Media

Kolpas

Nisbet

2010

Bull. Math. Biol.

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“…Drift -the downstream movement of the organisms driven by flow -is one of the most important and most studied transport phenomena in stream ecology (reviews by Waters 1972;Müller 1974;Brittain & Eikeland 1988). As a mechanism of continuous re-distribution of stream biota, drift is considered to be an important factor that affects changes in stream benthic community composition, energy flow and habitat heterogeneity in all lotic hydrosystems (e.g., O'Neill 1976;Frissell et al 1986;Wallace & Webster 1996;Palmer & Poff 1997;Yarnell et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Meiofauna constitute a considerable portion of invertebrate drift among moss-rich patches within a karst hydrosystem

Perić¹,

Dražina²,

Špoljar³

et al. 2014

Biologia

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Aiming to establish the most frequent invertebrate taxa in drift at the small spatial scale within a moss-rich karst tufa-precipitating hydrosystem, we sampled drift among microhabitats differing in substratum type and flow conditions along a tufa barrier-cascading lotic reach. Additionally, we addressed the question of the contribution and the potential significance of meiofauna within the overall invertebrate drift at the small spatial scale. During the study period, a total of 60 invertebrate taxa were recorded in the drift. Six of these taxa belonged to the annelid/arthropod meiofauna and they represented 35% of total drift density. Macroinvertebrates found in drift were represented mainly by larval insects. The composition of the most abundant taxa in total drift was as follows: Alona spp. (Cladocera 26.7%), Riolus spp. (Coleoptera: Elmidae 13.2%), Simulium spp. (Diptera: Simuliidae 12.2%), Enchytraeidae (Oligochaeta 10.4%), Hydrachnidia (6.3%), Orthocladinae (Diptera: Chironomidae 3.9%) and Naididae (Oligochaeta 3.6%). Faunal drift densities and amounts of transported particulate matter (PM) were highest at the fast-flowing sites located at the barriers and lowest at the slowflowing sites within pools. Similarly to the seasonal amounts of transported PM, faunal drift was lowest in winter, and peaked in autumn and in late spring/early summer. Correlation between flow velocity and PM-faunal drift densities suggested a significant effect of the dislodged PM, though a minor influence of discharge and flow velocity on faunal drift. We suggest that the small-scale habitat heterogeneity and the respective feeding and refugial strategies of the fauna, as well as faunal passive dislodgement initiated by the shear forces of the flow were the most important drivers of observed drift patterns.

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“…This downstream recolonization is achieved by active locomotion processes (e.g. drift) [2], which are important ecological phenomenon in running waters [3] for understanding the colonization cycle [4], and evaluating the potential impact of certain actions. In this context discrete events can play a specific role in structuring most ecological communities, particularly stream benthic communities [5].…”

Section: Introductionmentioning

confidence: 99%

Stability and resilience in macrobenthic communities: the role of habitat disturbance

Guerra¹,

Cobo²,

González³

et al. 2007

WIT Transactions on Ecology and the Environment, Vol 106

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The diversity of fluvial ecosystems allows the detection of various changes in the natural equilibrium. These changes can be related to variations in the composition of the fluvial forest, to the chemical or physical quality of the water, or to alterations of the habitat template. The aim of this study was to understand the resilience of the ecosystem to the degradation of the habitat, resulting from the construction of a highway in a regional protected area. This resilience was measured in terms of the reestablishment of macrobenthic communities. Located at the Estorãos River (sub-watershed of the Lima River, NW Portugal), a set of three sampling stations upstream and downstream from the construction site were monitored for a period of one year, and the invertebrate communities were characterized as well as their ecological and biological traits, and the changes that occurred were classified. The observations made clearly mark the moment of the beginning of the construction process, and from the trait analysis we could discriminate between different types of pressures, namely an increment on sediment loads, and riverbed deterioration. This impact also affected the trophic relations and the food preferences of the invertebrate communities. From the analysis it is apparent that the fact that the construction was done in late winter contributed to the reestablishment of the invertebrate communities, since construction didn't affect their sensitive reproduction period. This fact permitted full recolonization of the construction site in a period of four months, reestablishing the community at the same diversity levels as the reference sites. All these aspects are in agreement with the components being analysed, but they lack information from the longer time series and more ecological components are needed to classify the resilience capacity of this type of ecosystem.

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Stream Drift as a Chronobiological Phenomenon in Running Water Ecosystems

Cited by 181 publications

References 63 publications

Effects of Demographic Stochasticity on Population Persistence in Advective Media

Effects of Demographic Stochasticity on Population Persistence in Advective Media

Meiofauna constitute a considerable portion of invertebrate drift among moss-rich patches within a karst hydrosystem

Stability and resilience in macrobenthic communities: the role of habitat disturbance

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