Ichthyoplankton transport in relation to floodplain width and inundation and tributary creek discharge in the lower Savannah River of Georgia and South Carolina

Martin, F. Douglas; Paller, Michael H.

doi:10.1007/s10750-007-9146-6

Cited by 20 publications

(22 citation statements)

References 32 publications

(38 reference statements)

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“…We did not attempt to compensate for potential diel fluctuations in egg and larva abundance. This method has also been used in many other studies [8,[20][21][22].…”

Section: Discussionmentioning

confidence: 99%

Analysis of fish eggs and larvae flowing into the Three Gorges Reservoir on the Yangtze River, China

Liu

et al. 2014

Fish Sci

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“…We did not attempt to compensate for potential diel fluctuations in egg and larva abundance. This method has also been used in many other studies [8,[20][21][22].…”

Section: Discussionmentioning

confidence: 99%

Analysis of fish eggs and larvae flowing into the Three Gorges Reservoir on the Yangtze River, China

Liu

et al. 2014

Fish Sci

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“…Intra-and inter-annual variation in drift densities, for instance, may be attributed to fluctuations in water temperature and the related variability in egg mortality during incubation (Busch et al 1975;Sonny et al 2006). Rising discharge levels during certain periods may inundate breeding grounds, and ensure efficient oxygenation of the eggs, thereby increasing larval density and inducing seasonal drift peaks (Johnston et al 1995;de Graaf et al 1999;Martin and Paller 2008).…”

Section: At What Life History Stage Do Fishes Drift?mentioning

confidence: 99%

Patterns and processes in the drift of early developmental stages of fish in rivers: a review

Lechner

Keckeis

Humphries

2016

Rev Fish Biol Fisheries

119

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Current-mediated downstream dispersal by the early developmental stages of fish in rivers is a common phenomenon. Knowledge of patterns and processes in the dispersal, or 'drift', of young fishes provides important information on spawning location and spawning success, habitat use, movement paths and flow-ecology relationships more generally, all of which are critical for effective river conservation and management. But despite the importance of such information, our understanding of the patterns and processes of the drift of the early life stages of riverine fishes is limited. Furthermore, riverine fish drift research has tended to occur in isolation from movement studies of other organisms, limiting its integration with higher level concepts and theory. This manuscript reviews the literature on the dispersal of young fishes in running waters. Relevant studies from all climatic zones and geographical regions are investigated, with particular attention given to the types and life history stages of fishes that drift and the seasonal and diel patterns of drifting. We then consider how fish enter the drift and their mode of drifting, attempting to reconcile a long-running discussion, under what we call the 'active-passive conundrum'. We argue that, aside from eggs, the early stages of fish are not exclusively either passive or active drifters, but usually a mixture of the two, which we term 'actipassive' drift. Finally, we evaluate existing knowledge in the context of a general conceptual framework for movement ecology, identifying gaps in our understanding of the roles of internal state, navigation capacity, motion capacity, external factors and internal factors in influencing the dispersal process.

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“…Some studies have shown that density metrics data are insuffi cient to evaluate the numbers of eggs and larvae and result in incorrect estimates of egg and larval abundance because they do not account for large water volume diff erences (water discharge) among seasons or years (Martin and Paller, 2008). To avoid these limitations, the numbers of eggs and larvae transported through the sample transect were determined from estimates of daily mean egg and larval densities and station discharge.…”

Section: Discussionmentioning

confidence: 99%

“…To avoid these limitations, the numbers of eggs and larvae transported through the sample transect were determined from estimates of daily mean egg and larval densities and station discharge. We assumed that all eggs and larvae in the water column were carried past the sampled river section and that no eggs and larvae remained in the vicinity of the sampled section (Martin and Paller, 2008). The numbers of eggs and larvae transported over time at each sample transect were calculated by averaging the numbers of eggs and larvae transported between each pair of consecutive sampling occasions, multiplying this mean by the elapsed time between sampling occasions, and summing the intervals (Yi et al, 1988;Martin and Paller, 2008;Mu et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…No eff ort was made to compensate for potential diel fl uctuations in egg and larval abundance. This method has been used in many other studies (Yi et al, 1988;Robinson et al, 1998;Copp et al, 2005;Martin and Paller, 2008;Jiang et al, 2010;Mu et al, 2014). The total numbers of eggs and larvae were calculated according to the following formulae (see also Mu et al, 2014),…”

Section: Discussionmentioning

confidence: 99%

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Impact of the Three Gorges Dam on reproduction of four major Chinese carps species in the middle reaches of the Changjiang River

Duan

Gao

et al. 2016

Chin. J. Ocean. Limnol.

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Silver carp ( Hypophthalmichthys molitrix ), bighead carp ( Aristichthys nobilis ), grass carp ( Ctenopharyngodon idella ), and black carp ( Mylopharyngodon piceus ) are the four major Chinese carps and are commercially important aquaculture species in China. Reproduction of these carp has declined since the construction of the Three Gorges Dam (TGD) due to an altered water fl ow and thermal regime in the Changjiang (Yangtze) River. However, details of the changes in reproduction of the four species are not well understood. To assess the impact of the TGD on reproduction of the four carp, we investigated their eggs and larvae at Yidu City, which is 80 km below the TGD, during 2005-2012. We examined diff erences in larval abundance of the four species in the Jianli section (350 km downstream of the TGD) before (1997)(1998)(1999)(2000)(2001)(2002) and after (2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012) construction of the TGD. Based on these observations, the fi rst spawning date of the four species was delayed a mean of about 25 days after the dam was constructed. Mean egg abundance in the Yidu section of the river was 249 million and mean larval abundance was 464 million, which were signifi cant decreases since the 1980s. Moreover, larval abundance in the Jianli section after the dam was constructed was signifi cantly lower than that before construction (ANCOVA, P <0.05). The observed larval abundance accounted for only 24.66% of the predicted value in 2003 when the dam was fi rst inundated. The present spawning grounds between the TGD and Yidu section of the river are very similar to those described in the 1980s, and some spawning grounds exist upstream of the TGD. Large free-fl owing stretches upstream of the TGD and the creation of artifi cially fl ooded downstream reaches are needed to stimulate spawning and eff ectively conserve these four major Chinese carps species.

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Ichthyoplankton transport in relation to floodplain width and inundation and tributary creek discharge in the lower Savannah River of Georgia and South Carolina

Cited by 20 publications

References 32 publications

Analysis of fish eggs and larvae flowing into the Three Gorges Reservoir on the Yangtze River, China

Analysis of fish eggs and larvae flowing into the Three Gorges Reservoir on the Yangtze River, China

Patterns and processes in the drift of early developmental stages of fish in rivers: a review

Impact of the Three Gorges Dam on reproduction of four major Chinese carps species in the middle reaches of the Changjiang River

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