Floodplains within reservoirs promote earlier spawning of white crappies Pomoxis annularis

Miranda, Leandro E.; Dagel, Jonah D.; Kaczka, Levi J.; Mower, Ethan; Wigen, S. L.

doi:10.1007/s10641-014-0276-1

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…These effects reduce recruitment when floods occur from May to June and overlap spawning (Scott & Crossman 1973;Smith et al 2005), as in the Missouri River in 2011. As Centrarchids, white crappies typically reproduce in floodplain areas <1.5m deep with sand and clay substrates and aquatic macrophytes (Miranda et al 2015). Vegetation promotes Centrarchid spawning by providing protection from wave turbulence (Pope & Willis 1997).…”

Section: Discussionmentioning

confidence: 99%

Effects of historic flooding on fishes and aquatic habitats in a Missouri River delta

Carlson

Fincel²,

Longhenry³

et al. 2016

Journal of Freshwater Ecology

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Understanding the effects of disturbances on aquatic biota is important for management of the world's rivers. Riverine deltas are among the most biologically productive ecosystems, yet the ecological effects of floods in deltas are poorly understood. Therefore, the goal of this study was to examine impacts of an historic flood in the Missouri River basin in 2011 on fishes and aquatic habitats in the Lewis and Clark Delta, located in South Dakota and Nebraska, USA. Fish community structural indices declined in the six years preceding the flood, with species richness and diversity (Fisher's a) decreasing from 25 to 22 and 4.56 to 3.48, respectively. However, the fish community exhibited short-term resistance to the flood as both metrics were similar to pre-flood levels after the disturbance in 2012. Evenness (J 0 ) declined from 0.88 to 0.73 before the flood but increased to 0.84 after the disturbance. The majority of species exhibited greater relative abundance after the flood regardless of age class (i.e., juvenile, adult), morphology (i.e., small-bodied, large-bodied), introduction history (i.e., introduced, native), or recreational importance (i.e., sport fish, non-recreational). However, the flood reduced relative abundance of juvenile freshwater drum (Aplodinotus grunniens) and white crappie (Pomoxis annularis) and did not affect the three small-bodied species that were studied, including emerald shiner (Notropis atherinoides), red shiner (Cyprinella lutrensis), and spotfin shiner (Cyprinella spiloptera). The flood decreased side channel and backwater frequency and width/area but increased sandbar abundance. Physical alterations evidently had minimal effects on structural indices of the fish community. However, an overall increase in relative abundance across species suggests that interspersed fluvial and slackwater habitats in the delta provided refuge from floodwaters during the disturbance. Maintaining habitat connectivity in deltas during and after floods is particularly important for fisheries conservation. Illustrating the ecological effects and implications of a major flood, this study contributes to the nascent field of delta ecology.

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Section: Discussionmentioning

confidence: 99%

Effects of historic flooding on fishes and aquatic habitats in a Missouri River delta

Carlson

Fincel²,

Longhenry³

et al. 2016

Journal of Freshwater Ecology

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“…Shoreline erosion, water turbidity and nutrient increases, and the homogenization of littoral zones, which were once home to a wide variety of organisms, are all caused by artificial water level changes determined by water management goals, in addition to the effects of wind, wave, and ice action (Allen and Tingle 1993; Carmignani and Roy 2017). The orderly water regimes impair wetlands and well‐established riparian zones, which provide vital services in rivers, and are generally confined to the tributaries of reservoirs (Miranda et al 2015). Littoral ecosystems in many reservoirs are barren because of inadequate deposition of woody debris, poor accessibility to wetlands and backwaters, a lack of riparian seed banks, and the constant fluctuation of water levels that annually expose substrates (Miranda 2017).…”

Section: Reservoir Agingmentioning

confidence: 99%

Aging, Climate, and Invasions Threaten Reservoirs in the Mississippi River Basin

Miranda

2023

Fisheries

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Reservoirs in the Mississippi River basin are facing three momentous threats. The first two, aging and climate change, are relatively slow moving and their signal can be hard to discern given their stretched temporal scales. The third, species invasions, is faster paced and discernable within shorter temporal scales and restricted spatial scales. Aging and climate directly affect reservoir environments and indirectly their biotic communities. Climate change is expected to interact with aging to speed up and, in some instances, slow down aging. Conversely, invasions primarily imperil biotic communities but can also impact environmental elements. This triple jeopardy is expected to transform reservoir environs and their biotic assemblages in various, often uncertain, ways. I take a broad view of these threats within the Mississippi River basin. A basin‐scale perspective, in contrast to a single reservoir or regional scale, may enhance awareness of reservoirs at a larger level and produce understanding less evident at local levels, hence possibly offering a wider range of choices for confronting threats. My aim is to (1) provide a synopsis of the assemblage of reservoirs and their attributes over the Mississippi River basin, (2) describe the issues related to aging, climate change, and invasions, and (3) consider a conservation framework for confronting these pressures. Given the overlapping temporal, spatial, and ecological effects of these threats, it is essential to address their effects simultaneously.

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“…For example, the life stages of many species use mesohabitats (e.g. rocky substrates, macrophytes) in littoral areas for refuge and feeding (Lewin et al , ; Brown and Bozek, ), while littoral‐spawning species rely on these areas for reproduction (Gafny et al , ; Probst et al , ; Low et al , ; Miranda et al , ). Marginal lentic habitats, however, are hydrologically dynamic as water‐level fluctuations at various temporal scales (e.g.…”

Section: Introductionmentioning

confidence: 99%

Water levels in a highland lake control the quantity and quality of spawning habitat for a littoral‐spawning galaxiid fish

Hardie

Chilcott

2016

Aquatic Conservation

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1. In comparison with other habitats, the littoral zone can be disproportionately important to lentic fishes, especially for species that rely on it for reproduction. Impoundment of lentic waters can alter hydrological regimes, littoral inundation patterns and hydrodynamic processes, which can affect the quantity and quality of littoral habitats.2. This study examined the effects of water-level fluctuations on the quantity and quality of rocky littoral spawning habitat for the threatened Galaxias auratus in the Crescent-Sorell lake system, Tasmania (Australia) using GIS analyses, sediment measurements and observations of the composition and condition of littoral substrates under varying hydrological conditions.3. The extent of littoral rocky substrate was found to be limited in Lake Crescent (<1.3% of the lake's bed). The relationship between water levels and G. auratus spawning habitat (littoral rocky substrates at depths of 0.2-0.6 m) was non-linear with spawning habitat quantity and quality declining markedly at water levels <802.20 m Australian Height Datum (AHD). Hydrological impacts of global climate change on the Crescent-Sorell lake system are likely to increase the occurrence of water levels below this threshold in Lake Crescent in the future, thereby limiting the ability of G. auratus to sustain its population in this lake.4. The structure of littoral areas of rocky substrate in Lake Crescent and Lake Sorell, and influential processes acting on these areas under varying hydrological conditions, were conceptualized to assist transferability of this knowledge to other lentic waters and species with similar habitat requirements.5. Global climate change is predicted to alter lacustrine hydrological regimes and shoreline environments. This is likely to have significant ramifications for fishes that use littoral habitats during their life cycles, especially crucial reproductive phases. We believe the influence of alterations to hydrological regimes on the availability of these habitats to lacustrine fishes requires further investigation globally.

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Floodplains within reservoirs promote earlier spawning of white crappies Pomoxis annularis

Cited by 4 publications

References 23 publications

Effects of historic flooding on fishes and aquatic habitats in a Missouri River delta

Effects of historic flooding on fishes and aquatic habitats in a Missouri River delta

Aging, Climate, and Invasions Threaten Reservoirs in the Mississippi River Basin

Water levels in a highland lake control the quantity and quality of spawning habitat for a littoral‐spawning galaxiid fish

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