A functional group approach reveals important fish recruitments driven by flood pulses in floodplain ecosystem

Wang, Chao; Jiang, Zhongguan; Zhou, Lizhi; Dai, Bingguo; Song, Zhuoyan

doi:10.1016/j.ecolind.2018.12.024

Cited by 26 publications

(25 citation statements)

References 61 publications

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“…For example, Pearson et al () studied fish assemblages in the wetlands of the Tully–Murray floodplain and concluded that hydrological connectivity is a major factor contributing to the differences in fish recruitment in the wetlands. Moreover, the flood pulse was also revealed as an important driver for the fish community composition in floodplain ecosystems through hydrological connectivity (Wang, Jiang, Zhou, Dai, & Song, ).…”

Section: Discussionmentioning

confidence: 99%

Modelling inundation patterns and sediment dynamics in the extensive floodplain along the Tonle Sap River

Siev

Paringit

Yoshimura

et al. 2019

River Research & Apps

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The Tonle Sap River (TSR) serves as a natural medium for the reversal flow between Tonle Sap Lake (TSL) and the Mekong River to sustain productivity and biodiversity in the TSR floodplain and TSL. Understanding the hydrological connectivity and its dynamics in the TSR, including its floodplain, is therefore important to support activities that aim to maintain ecological services in the TSR-TSL system. Thus, the main objective of this study is to examine the hydrological connectivity of the TSR and its floodplain by a modelling approach that integrates inundation patterns and sediment dynamics. The Caesar-Lisflood model was applied to describe inundation, sediment erosion, transport, and deposition in the TSR for the period of 2003-2013.The inundation areas connected to the TSR ranged from 140 to 2,327 km 2 , whereas the isolated inundation areas from the TSR ranged from 0.27 to 504 km 2 . Sediment dynamics showed its influence on inundation patterns and hydrological connectivity and could alter the yearly inundation ratio (defined as a normalized inundation frequency with a value ranging from 0 to 1) up to 0.8. Our approach provides a quantitative way to determine key factors (e.g., total inundation areas, seasonality, and connectivity of inundation patterns) for further investigation of ecological processes in relation to the inundation patterns and sediment dynamics in the TSR and TSL.

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Section: Discussionmentioning

confidence: 99%

Modelling inundation patterns and sediment dynamics in the extensive floodplain along the Tonle Sap River

Siev

Paringit

Yoshimura

et al. 2019

River Research & Apps

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“…Flood-channel complexes, or wetland ecosystems are dynamic and among the most productive and diverse due to their spatial and temporal heterogeneity caused by changes in the water level and the presence of systems of lotic and lentic reservoirs (Ward & Stanford, 1995;Dudgeon et al, 2006;Röpke et al, 2016;Wang et al, 2019) are optimal places for feeding and spawning of river fish (Janáč et al, 2010;Górski et al, 2011). At the same time, flood impulses are the main drivers for the dynamics of aquatic communities, biodiversity and fish numbers (Wang et al, 2019) in floodplains (Baumgartner et al, 2018). The developed floodplain-channel complex of the Lower Irtysh is also a feeding and a spawning place for various species of fish.…”

Section: Discussionmentioning

confidence: 99%

“…It is worth noting that due to the rise in the water level as a result of floods, a connection is formed between parts of the floodplain-channel system of rivers, as a result of which migratory fish are redistributed in different parts of the waters bodies of these systems with heterogeneous and differing habitat conditions, as a result of the flooding of land plants, the availability of food resources and spawning sites increases (Agostinho et al, 2009;Fernandes et al, 2009). Thus, the factor of water level is of fundamental importance in the dynamics of the number and structure of the fish communities in river floodplains (Junk et al, 1989;Wang et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Researchers have studied the duration and direction of migration in the floodplain-channel complexes of the Amazon (Goulding et al, 2019), Yangtsi (Jin et al, 2019;Wang et al, 2019) and Parana Rivers (Baumgartner et al, 2018), and investigated the abundance and structure of the fish population, its dimensional taxonomic features in the areas of flooded floodplains, that is, either in the middle or at the end of the migration pathway, even on the territory of the Russian Federation, for example, in the Volga-Akhtuba river system (Van de Wolfshaar et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have noted (Goulding et al, 2019;Wang et al, 2019) the importance of studying the problem of fish community dynamics in floodplain-riverine ecosystems, taking into account their lentic and lotic parts, but these works are rare. In addition, currently there is a lack of information on the mechanisms of the effect of abiotic factors on the migration of fish from non-salmon families (Walton et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Effects of temperature and water levels on dynamics of density and structure of the fish population of the channel-floodplain complex of a large river in the period of spring floods

Chemagin¹

2019

Biosys. divers.

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The article discusses the features of the dynamic process of migration of ichthyofauna from wintering sites to the wetlands of a large boreal river for feeding and spawning. The influence of factors of temperature and water level on various groups of fish is estimated, and the role of water bodies of various types during fish migration in a flooded floodplain is also established. The research was performed during the spring flood in the floodplain-channel complex of the Irtysh River (Western Siberia, Russian Federation) in the water area of the conjugate water bodies: the lotic and lentic parts of the riverbed depression and the mouth of the tributary – transit section of the migration pathway of fish to the flooded floodplain. The research work was performed by “AsCor” – computerized hydroacoustic complex, hydroacoustic survey data were processed in the laboratory. The “AsCor” complex remotely performs taxonomic identification of abundant species of fish at the family level by groups (Cyprinidae, Percidae, Coregonidae–Esocidae, Acipenseridae–Lotidae). It was found that after the breakup of ice cover, maximum densities of fish were observed in the wintering sections – the initial location of the spring migration. During the 30-days observation period in the wintering sections and conjugate water bodies, the density of fish decreased from 4 to 13 times due to their migration to the floodplain. The response to a decrease in the overall density of fish in the year-round functioning lotic part of the riverbed depression to the influence of factors of water level and temperature regimes was >0.300 in general for ichthyofauna and for all groups of fish registered by hydroacoustic method (Cyprinidae, Percidae, Coregonidae–Esocidae, Acipenseridae–Lotidae). We constructed regression models of changes in the density of fish in the wintering sections of the river depending on the considered factors. Use of ANOVA analysis of variance confirmed the adequacy of the choice and the acceptability of the constructed models. We established a high statistically significant inverse correlation between the density of the fish, the water level and temperature regime for the mouth of the Konda River and the lentic part of the riverbed depression, which are transit sections of the migration pathway of fish in the floodplain. The lentic part of the riverbed depression may perform the function of a temporary station of fish during migration to the floodplain, which is beneficial from the point of view of bioenergetics resources. During the observation period, in the river flows there was a decrease in the proportion of larger fish and an increase in smaller individuals; in the lentic part of the riverbed depression, on the contrary, there was a reduced proportion of small fish and increase in the proportion of larger individuals.This pattern is explained by the reduced risk of predation by small fish in more turbulent conditions, as well as by an initial entry into the flooded floodplain of larger individuals of fish for spawning, followed by the smaller ones for feeding.

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Frogs and flows: Using life‐history traits and a systematic review to establish water‐dependent functional groups for stream frogs in New South Wales, Australia

Coleman,

Wood,

Healey

2024

Ecohydrology

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Hydrological alteration has contributed to the global decline of stream frogs. Flows support stream frog reproduction, juvenile development, food resources, and maintain habitats for all life stages. At present, there is a lack of information regarding the specific water requirements necessary for the conservation of stream frogs. To address this gap, we developed a traits‐based approach that serves as a valuable tool for grouping and prioritising water‐dependent stream frog species to inform future research priorities and environmental flow design. In this study, we focussed on 53 Australian frog species and analysed eight species traits to develop water‐dependent functional groups for stream frogs. We classified frogs based on their level of water dependency using an agglomerative hierarchical clustering analysis and a systematic review of water requirements and water management threats. The distinguishing traits that determined functional groups were: tadpole body type, egg clutch type, stream breeding habitat type, and documented association with flowing water and water permanence. Our study identified two distinct water‐dependent groups: facultative stream spawners, capable of reproducing in both stream and non‐stream habitats, and obligate stream spawners, restricted solely to stream habitats. Importantly, we highlight that the obligate stream spawners are the most sensitive group to within‐channel flow alteration and should be prioritised for water management decisions in lotic environments. This study represents the first comprehensive overview of the importance of hydrology for stream frogs and identifies the critical need for additional research and validation to enhance our understanding of stream frog responses to flows regimes.

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A functional group approach reveals important fish recruitments driven by flood pulses in floodplain ecosystem

Cited by 26 publications

References 61 publications

Modelling inundation patterns and sediment dynamics in the extensive floodplain along the Tonle Sap River

Modelling inundation patterns and sediment dynamics in the extensive floodplain along the Tonle Sap River

Effects of temperature and water levels on dynamics of density and structure of the fish population of the channel-floodplain complex of a large river in the period of spring floods

Frogs and flows: Using life‐history traits and a systematic review to establish water‐dependent functional groups for stream frogs in New South Wales, Australia

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