Discontinuity Bar in a Wetland on Lake Huron's Saginaw Bay

Suzuki, Norio; Endoh, Shuichi; Kawashima, M.; Itakura, Y.; McNabb, Clarence D.; D'Itri, Frank M.; Batterson, Ted R.

doi:10.1080/02705060.1995.9663425

Cited by 13 publications

(18 citation statements)

References 8 publications

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“…(Cardinale et al 1997, Gyekis 2006. These gradients have also been shown to correlate with invertebrate (Cardinale et al 1998, Burton et al 2004, Gyekis 2006, zooplankton (Cardinale et al 1998, Gyekis 2006, and algal (Suzuki et al 1995) community structure, suggesting system-scale drivers of community assembly in fringing systems. Such drivers, or the resulting community gradients themselves, may have affected round goby invasion dynamics as well, causing differences in habitat use between inner and outer areas.…”

Section: Round Goby Dietsmentioning

confidence: 98%

Habitat Use and Diet of the Round Goby (Neogobius melanostomus) in Coastal Areas of Lake Michigan and Lake Huron

Cooper

Ruetz

Uzarski

et al. 2009

Journal of Freshwater Ecology

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The non-indigenous round goby (Neogobius melanostomus) has caused considerable impact in the Laurentian Great Lakes. We sampled round gobies in shoreline habitats and tributary systems of Lake Michigan and Lake Huron to determine patterns of habitat use and diet, including the extent dreissenid mussels were consumed. Along the shoreline, round goby catch did not significantly differ based on the presence of emergent vegetation, but deeper habitats were preferred relative to shallow areas closer to shore. In tributary systems, submersed aquatic vegetation in coastal lakes was preferred. The majority of round gobies were small, generally between 3 and 7 cm, and had diets comprised mainly of zooplankton and dipterans with few dreissenids. Our results indicate that the round goby has invaded coastal areas inconsistently across habitat types and that the species can proliferate in the absence of dreissenid mussels.

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Section: Round Goby Dietsmentioning

confidence: 98%

Habitat Use and Diet of the Round Goby (Neogobius melanostomus) in Coastal Areas of Lake Michigan and Lake Huron

Cooper

Ruetz

Uzarski

et al. 2009

Journal of Freshwater Ecology

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“…Pelagic surface waves generally arrive perpendicular to the stand, and during our study were observed to penetrate 160-200 m into the vegetation. As a result, water chemistry changes from the macrophyte edge towards the shore (Suzuki et al 1995).…”

Section: Study Sitementioning

confidence: 99%

“…Macrophytes grew on substrates composed mostly of sand (85-97%) with lesser fractions of clay and silt (Suzuki et al 1995). Smaller, isolated patches of Scirpus acutus, Typha angustifolia, and Sagittaria sp.…”

Section: Study Sitementioning

confidence: 99%

“…Various forms of environmental heterogeneity may result horizontally through the vegetation as circulation is gradually reduced due to resistance from plant stems. The physical and chemical properties of water often change from the pelagic-littoral edge towards shore (Dvorak 1970;Howard-Williams and Lenton 1975;Klosowski 1992;Suzuki et al 1995). The transport and deposition of suspended particulates may be inversely related to distance from open water (Fonseca and Fisher 1986;Leonard and Luther 1995).…”

Section: Introductionmentioning

confidence: 99%

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The community dynamics of epiphytic midge larvae across the pelagic–littoral interface: do animals respond to changes in the abiotic environment?

Burton¹,

Brady²

1997

Can. J. Fish. Aquat. Sci.

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In some littoral systems, abiotic heterogeneity results from the edge of vegetation towards the shore as macrophytes gradually impede mixing between pelagic and littoral water. During the summer of 1994, we investigated whether such abiotic heterogeneity influenced epiphytic midge larvae (Diptera:Chironomidae) inhabiting a stand of Scirpus americanus in Saginaw Bay, Lake Huron. After macrophytes became well established, gradients in six parameters of water quality (turbidity, alkalinity, pH, dissolved oxygen, conductivity, and chloride) formed horizontally from the macrophyte edge towards the shore. In outer portions of the stand where physico-chemical properties were influenced by the influx of pelagic surface waves, chironomid abundance increased to 1076 larvae ⋅ stem -1 . Diversity (H′) in these areas remained constant over the summer with grazing and filter-feeding taxa equally represented. Further into the macrophyte bed where water quality indicated highly reduced mixing, midge abundance never exceeded 27 individuals ⋅ stem -1 and larval biomass was reduced 2-4 fold. Loss of filter-feeding taxa resulted in a dramatic decline in diversity in these areas after formation of the abiotic gradients. This study suggests that pelagic-littoral water exchange may result in environmental heterogeneity that directly or indirectly influences epiphytic invertebrate community structure and function.Résumé : Dans certains systèmes littoraux, il se produit une hétérogénéité abiotique entre la bordure de la végétation et le rivage à mesure que le mélange des eaux pélagiques et des eaux littorales est entravé par la croissance des macrophytes. Durant l'été de 1994, les auteurs ont tenté de savoir si cette hétérogénéité abiotique avait une influence sur les larves épiphytes de moucherons (diptères : Chironomidae) qui s'abritent dans une colonie de Scirpus americanus de la baie Saginaw, dans le lac Huron. Une fois les macrophytes bien établis, des gradients horizontaux se sont formés pour six paramètres de la qualité de l'eau (turbidité, alcalinité, pH, oxygène dissous, conductivité et chlorure) depuis la bordure des macrophytes jusqu'au rivage. Du côté extérieur de la colonie, là où les propriétés physico-chimiques étaient modifiées par l'afflux des vagues de surface du secteur pélagique, l'abondance des chironomidés a augmenté pour atteindre 1 076 larves ⋅ tige -1 . Dans ces secteurs, la diversité (H′) est demeurée constante durant l'été, les espèces brouteuses et les espèces filtreuses étant également représentées. Plus loin dans l'herbier de macrophytes, où la qualité de l'eau indique que le brassage est extrêmement réduit, l'abondance des moucherons n'a jamais dépassé 27 individus ⋅ tige -1 , et la biomasse des larves a été réduite de 2 à 4 fois. La perte d'espèces filtreuses a entraîné une très grave diminution de la diversité à cet endroit après la formation de gradients abiotiques. Les résultats de l'étude semblent indiquer que l'échange entre les eaux littorales et les eaux pélagiques peut entraîner une hétérogénéité e...

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“…Invertebrate communities can be affected by structural complexity of vegetation (Krecker 1939;Jeffries 1993) and stem density (Voigts 1976;McLaughlin and Harris 1990;Batzer and Resh 1992), as well as detritus characteristics, (Barlocher et al 1978;Nelson et al 1990;Cooper et al 2007). Furthermore, vegetation attenuates wave energy, reducing pelagic/littoral mixing in the shoreward direction, and creating waterchemistry discontinuities (Suzuki et al 1995) that can affect invertebrate community composition (Cardinale et al 1997). Variation in vegetation communities can also affect fish predation on invertebrates (Gilinsky 1984;French 1988;Swisher et al 1998).…”

Section: Introductionmentioning

confidence: 98%

A Great Lakes Coastal Wetland Invertebrate Community Gradient: Relative Influence of Flooding Regime and Vegetation Zonation

Gathman

Burton

2011

Wetlands

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Wetland invertebrate community composition is affected by habitat conditions associated with flooding regimes and vegetation characteristics, yet distinguishing among these influential factors is difficult because they tend to co-vary spatially. We studied a Great Lakes coastal wetland invertebrate community along an elevation gradient as Lake Huron water level rose and fell over a three-year period. This hydrologic variation caused changes in the gradient of flooding conditions, while plant zonation remained relatively unchanged. Multivariate analysis indicated that the invertebrate community varied continuously along the elevation gradient, and that it changed substantially within vegetation zones as water level changed. Variation across the gradient decreased because the high-elevation wet meadow community became more similar to lower-elevation communities as a result of upslope expansion in distributions of many taxa, and substantial increases in dominance of a subset of taxa. Invertebrate density increased dramatically with high-water conditions, and diversity decreased in general. Results suggested that invertebrate community composition was influenced by flooding conditions more than vegetation. These results may have important implications for conservation of high-elevation wetland zones as high-water refuges for wet-meadow invertebrates, and for coastal wetland monitoring schemes based on vegetation zones as habitat for particular invertebrate assemblages.

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Discontinuity Bar in a Wetland on Lake Huron's Saginaw Bay

Cited by 13 publications

References 8 publications

Habitat Use and Diet of the Round Goby (Neogobius melanostomus) in Coastal Areas of Lake Michigan and Lake Huron

Habitat Use and Diet of the Round Goby (Neogobius melanostomus) in Coastal Areas of Lake Michigan and Lake Huron

The community dynamics of epiphytic midge larvae across the pelagic–littoral interface: do animals respond to changes in the abiotic environment?

A Great Lakes Coastal Wetland Invertebrate Community Gradient: Relative Influence of Flooding Regime and Vegetation Zonation

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