Factors affecting distribution pattern of dominant macroinvertebrates in Mantovo Reservoir (Republic of Macedonia)

Slavevska-Stamenković, Valentina; Paunović, Momír; Smiljkov, Stoe; Stafilov, Trajče; Prelić, Dana; Ristovska, Milica; Gačić, Zoran; Atanacković, Ana

doi:10.2478/s11756-012-0102-1

Cited by 5 publications

(4 citation statements)

References 38 publications

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“…Our results suggest relatively little overlap between P. lucius , the species with the highest δ 15 N in the river upstream and I. punctatus , and supports other observations of limited piscivory by I. punctatus in the San Juan River 74 . Although we observed more overlap among species in the two habitats downstream of the waterfall, we do not expect competition is a strong driver of assemblage dynamics as river-reservoir inflows are not likely resource-limited 26 , 75 , 76 . Because native fishes in the Colorado River basin tend to be trophic generalists 77 , they might be less susceptible to competitive exclusion by nonnative species despite overlap in isotopic niche space.…”

Section: Discussioncontrasting

confidence: 70%

Trophic niches of native and nonnative fishes along a river-reservoir continuum

Pennock

Ahrens

McKinstry

et al. 2021

Sci Rep

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Instream barriers can constrain dispersal of nonnative fishes, creating opportunities to test their impact on native communities above and below these barriers. Deposition of sediments in a river inflow to Lake Powell, USA resulted in creation of a large waterfall prohibiting upstream movement of fishes from the reservoir allowing us to evaluate the trophic niche of fishes above and below this barrier. We expected niche overlap among native and nonnative species would increase in local assemblages downstream of the barrier where nonnative fish diversity and abundance were higher. Fishes upstream of the barrier had more distinct isotopic niches and species exhibited a wider range in δ15N relative to downstream. In the reservoir, species were more constrained in δ15N and differed more in δ13C, representing a shorter, wider food web. Differences in energetic pathways and resource availability among habitats likely contributed to differences in isotopic niches. Endangered Razorback Sucker (Xyrauchen texanus) aggregate at some reservoir inflows in the Colorado River basin, and this is where we found the highest niche overlap among species. Whether isotopic niche overlap among adult native and nonnative species has negative consequences is unclear, because data on resource availability and use are lacking; however, these observations do indicate the potential for competition. Still, the impacts of diet overlap among trophic generalists, such as Razorback Sucker, are likely low, particularly in habitats with diverse and abundant food bases such as river-reservoir inflows.

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Section: Discussioncontrasting

confidence: 70%

Trophic niches of native and nonnative fishes along a river-reservoir continuum

Pennock

Ahrens

McKinstry

et al. 2021

Sci Rep

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“…The majority were non‐native species such as common carp, channel catfish, gizzard shad and yellow bullhead, but native razorback sucker also increased in this area. Abundant phytoplankton, zooplankton and benthic invertebrates in river‐reservoir interfaces (Thornton et al., 1990; Nogueira et al, 2008; Slaveska‐Stamenković et al, 2012) might attract species that can feed in highly turbid waters (Drenner, Mummert, & O’Brien, 1982; Miranda & Lucas, 2004; Thornton et al., 1990). Benthic omnivores are often the most common trophic guild in large reservoirs (Matthews et al., 2004) and are represented by species that typically feed at low trophic levels (Gido & Franssen, 2007; Gido et al., 2009).…”

Section: Discussionmentioning

confidence: 99%

Reservoir fish assemblage structure across an aquatic ecotone: Can river‐reservoir interfaces provide conservation and management opportunities?

Pennock

Hines

Elverud

et al. 2020

Fisheries Management Eco

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River‐reservoir interfaces have been described as aquatic ecotones and contain strong environmental gradients of depth, turbidity and trophic resource abundance. These transitional habitats have traditionally been excluded by riverine and reservoir management schemes despite their prevalence in modern riverscapes. By systematically sampling shoreline habitats along a river‐reservoir interface gradient from riverine to lacustrine zones with trammel nets in 2018–2019, strong patterns were identified in total species captured and individuals captured in the San Juan River‐Lake Powell inflow, USA. Changes in assemblage structure were driven mainly by increases in relative abundance of benthic omnivores towards the riverine zone, including imperiled razorback sucker, Xyrauchen texanus (Abbott), but also by increases in predatory species, such as striped bass, Morone saxatilis (Walbaum). Inter‐annual variation in species distributions along the river‐reservoir interface gradient was likely influenced by variation in reservoir water level that differed by nearly 12 m between years. River‐reservoir interfaces provide high‐quality feeding and potentially spawning areas for both benthic omnivores and piscivores, and these areas should be considered in management and conservation efforts for species using these habitats.

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“…The abundances of both chironomids and oligochaetes at different lake levels showed the chironomids Cladotanytarsus sp. and to lower extent P. bicrenatum, together with the oligochaete L. hoffmeisteri prefer warmer, shallower habitats because they are considered to be more or less resistant to desiccation (Slavevska-Stamenković, 2012). By contrast, the abundances of S. pictulus, P. nubeculosum, P. sordidellus and Cryptochironomus sp.…”

Section: Discussionmentioning

confidence: 99%

Synoptic results on the potential impacts of the Lake Maggiore water management strategy on freshwater littoral ecosystems and invertebrate biocoenosis (NW, Italy)

Boggero,

Kamburska,

Zaupa

et al. 2023

J Limnol

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The first results of the application of the integrated multidisciplinary protocol to study the effects of water level management on the Lake Maggiore littoral habitats and biocoenosis are presented. The "Parchi Verbano Ticino" project (2019-2021, ID: 481668) was the driving force to fine-tune the monitoring and management system of multidisciplinary information (chemistry, hydro-morphology, macro- and meio-fauna monitoring). The study reveals that water level fluctuations in Lake Maggiore, sometimes characterized by measurable changes in water levels, have remarkable effects on littoral habitats and on the structure and function of macro- and meiofaunal assemblages living there. Overall, this study provides insights into the potential impacts of Lake Maggiore water management strategy on freshwater littoral ecosystems during late spring-early summer, and emphasizes the need for a comprehensive understanding of the lake ecosystem dynamics. Thanks to the results achieved, publicly endorsed water management rules will be stated, for the late spring-early summer period, considering frequency and amplitude of water level fluctuations as crucial factors in management plans to mitigate their impacts. The endorsed rules turn out to be a negotiated compromise between the maintenance of ecosystem services and the protection of littoral life below water.

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Factors affecting distribution pattern of dominant macroinvertebrates in Mantovo Reservoir (Republic of Macedonia)

Cited by 5 publications

References 38 publications

Trophic niches of native and nonnative fishes along a river-reservoir continuum

Trophic niches of native and nonnative fishes along a river-reservoir continuum

Reservoir fish assemblage structure across an aquatic ecotone: Can river‐reservoir interfaces provide conservation and management opportunities?

Synoptic results on the potential impacts of the Lake Maggiore water management strategy on freshwater littoral ecosystems and invertebrate biocoenosis (NW, Italy)

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