A Comparison of Sampling Gears for Capturing Juvenile Silver Carp in River–Floodplain Ecosystems

Results of the study of salt-affected soils on the Tanana River floodplain in interior Alaska raised a number of key issues that are important to resolve with future research in this fluvial environment. The results emphasized the prominent role of plant succession in ecosystem structure and function in northern boreal forests. For example, alder plays a crucial role in organic matter and nitrogen dynamics in floodplain ecosystems. This plant species has an impact on ecosystem processes in successional stages beyond its period of dominance on the floodplain. The potential facilitative nature of nitrogen accumulation, mediated by alder, to plant community development during and subsequent to the alder phase of succession should be examined in future studies. Organic matter chemistry and soil temperature appeared to be more important controls of soil processes than high soil salt content. Moreover, secondary plant chemicals may play a role in determining rates of soil nitrification in these floodplain ecosystems. The importance of ion balance to plant nutrition and primary production in salt-affected soils is an important topic for future research. Groundwater may be a unique source of water and nutrients to floodplain plant communities. The magnitude of water flux to the rooting zone in relation to terrace elevation and river level and its importance to plant growth is a significant consideration in the semiarid environment of interior Alaska. The established plant community indicates which species are successful in this environment. Optimum species-terrace combinations may exist that maximize productivity through use of unique moisture and nutrient supplies associated with a shallow water table. Results of this work suggested that new research initiatives are crucial to advance the fundamental understanding of controls of ecosystem processes and as a base of information to support forest resource management.

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Propagule pressure and environmental filters related to non-native species success in river-floodplain ecosystems

Hydrobiologia ◽

10.1007/s10750-021-04624-8 ◽

2021 ◽

Author(s):

Sidinei Magela Thomaz

Keyword(s):

Native Species ◽

Propagule Pressure ◽

Environmental Filters ◽

River Floodplain ◽

Floodplain Ecosystems

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Ecogenetic Characteristics of Dandelion (Taraxacum officinale s.l.) Populations from the Techa River Floodplain Ecosystems

Russian Journal of Ecology ◽

10.1023/b:ruse.0000040684.39969.3d ◽

2004 ◽

Vol 35 (5) ◽

pp. 308-315 ◽

Cited By ~ 1

Author(s):

E. V. Ul'yanova ◽

V. N. Pozolotina ◽

I. E. Sarapul'tsev

Keyword(s):

Taraxacum Officinale ◽

River Floodplain ◽

Techa River ◽

Floodplain Ecosystems

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Interannual flow variability in a large subtropical–temperate floodplain: a challenge for fish reproduction

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/cjfas-2017-0579 ◽

2019 ◽

Vol 76 (3) ◽

pp. 390-400 ◽

Cited By ~ 6

Author(s):

E. Abrial ◽

L.A. Espínola ◽

A.P. Rabuffetti ◽

M.L. Amsler ◽

K.M. Wantzen

Keyword(s):

Life History ◽

Reproductive Traits ◽

Paraná River ◽

Water Levels ◽

Fish Reproduction ◽

Aquatic Life ◽

River Floodplain ◽

Parana River ◽

Floodplain Ecosystems ◽

Middle Paraná

Fluctuations of temperature and water levels are the two main drivers of aquatic life in river floodplain ecosystems. The large Middle Paraná River floodplain exhibits marked seasons and important interannual hydrological changes. Using a three-factor-based approach (fish reproductive traits, hydroclimatic conditions, and floodplain recruitment patterns), we analyzed how fish life history evolves within this fluctuating environment. We observed that hydroclimatic conditions can be considered through three main interannual variations that prompt the most abundant Paraná species to adopt four different main reproductive strategies: (i) typical periodic strategists are dependent on large spring–summer floods and juveniles strongly predominate in the floodplain when such a condition occurs, (ii) periodic–opportunistic strategists are associated with floods, regardless of their timing, (iii) periodic–equilibrium strategists take advantage of spring–summer floods whatever the intensity and duration, and (iv) equilibrium strategists have low flood dependence and higher stability in temporal fish recruitment. This work brings forth a first synthesis of fish life history in the Middle Paraná River and evidences how important both hydrological and temperature fluctuations are to interpret its complexity.

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Principles and Guidelines for Restoration of River/Floodplain Ecosystems — Kissimmee River, Florida

Rehabilitating Damaged Ecosystems ◽

10.1201/9780203741016-4 ◽

2017 ◽

pp. 49-74

Author(s):

Louis A. Toth

Keyword(s):

River Floodplain ◽

Kissimmee River ◽

Floodplain Ecosystems

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SEEDING DENSITY OF DIFFERENT FISH SPECIES IN POLYCULTURE

VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES FISHING INDUSTRY ◽

10.24143/2073-5529-2017-3-74-79 ◽

2017 ◽

pp. 74-79

Author(s):

Yuriy Borisovich Lvov

Keyword(s):

Fish Species ◽

Silver Carp ◽

Seeding Density ◽

Habitat Conditions ◽

Method Of Calculation ◽

Fish Breeding ◽

Trophic Preferences ◽

Breeding Zone ◽

Practical Progress

The article touches upon the principles, biological basics and practical progress of introduction of specific and age polyculture of fishes. Using the results of the analysis of literary and long-term native data, there has been offered the gradation of 12 fish species from different families by resistance to habitat conditions. Crucian ( Carassius gibelio ) has been chosen as the most sustainable object of cultivation. There has been taken an attempt to calculate the number of seeding different fish species in polyculture taking into account their physiological features is made. Subject to specific physiological features of the studied species, there was carried out recalculation of their natural reproductive performance in different fish-breeding zones, which is traditionally carried out for a carp ( Cyprinus carpio ). In particular, in the second fish-breeding zone with area of 1 hectare it is possible to breed 120 kg of carp, or 150 kg of crucian, or 75 kg of silver carp ( Hypophthalmichthys ). Overall productivity is made up of a share of fishes in polyculture, but taking into account tolerance of species, it can be lower than productivity calculated for carp. The method of calculation and formulas which give the chance to determine seeding density of fish species for breeding in polyculture have been offered. This technique makes it possible to use trophic preferences and consider tolerance of each species to the conditions of breeding areas.

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