Structural and functional composition of fish communities associated to Zostera noltii meadows as a response to natural habitat recovery

AbstractFish community structure, morphological characteristics, functional composition, and life history attributes in relation to three aquatic habitats, backwater shoreline (BWS), main channel borders (MCB), and side channel borders (SCB) in Pool 4 of the Upper Mississippi River System (UMRS) were assessed. Fish communities were sampled annually using standardized electrofishing techniques from 1994 to 2004. We found significant differences in community composition and abundance, and the clearest pattern was that diversity and fish community structure in BWS were different from those in both MCB and SCB. We also found morphological characteristics, functional composition, and life-history differences among the habitats, with fish communities from BWS having a number of different characteristics from both MCB and SCB. Temporal changes in fish abundance, community structure, morphological, functional and life-history attributes from each habitat may reflect both human impact and environmental factors on the Upper Mississippi River System.

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Structural and Functional Composition of Benthic Nematode Assemblages During a Natural Recovery Process of Zostera noltii Seagrass Beds

Estuaries and Coasts ◽

10.1007/s12237-016-0086-0 ◽

2016 ◽

Vol 39 (5) ◽

pp. 1478-1490 ◽

Cited By ~ 6

Author(s):

Patrick Materatski ◽

Anna-Maria Vafeiadou ◽

Tom Moens ◽

Helena Adão

Keyword(s):

Recovery Process ◽

Functional Composition ◽

Seagrass Beds ◽

Zostera Noltii ◽

Natural Recovery

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Non-Random Variability in Functional Composition of Coral Reef Fish Communities along an Environmental Gradient

PLoS ONE ◽

10.1371/journal.pone.0154014 ◽

2016 ◽

Vol 11 (4) ◽

pp. e0154014 ◽

Cited By ~ 16

Author(s):

Jeremiah G. Plass-Johnson ◽

Marc H. Taylor ◽

Aidah A. A. Husain ◽

Mirta C. Teichberg ◽

Sebastian C. A. Ferse

Keyword(s):

Coral Reef ◽

Reef Fish ◽

Coral Reef Fish ◽

Environmental Gradient ◽

Fish Communities ◽

Functional Composition ◽

Random Variability

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Difference in the trophic structure of fish communities between artificial and natural habitats in a tropical estuary

Marine and Freshwater Research ◽

10.1071/mf15326 ◽

2017 ◽

Vol 68 (3) ◽

pp. 473 ◽

Cited By ~ 7

Author(s):

Pedro Henrique Cipresso Pereira ◽

Marcus Vinicius Bezerra dos Santos ◽

Daniel Lino Lippi ◽

Pedro Henrique de Paula Silva ◽

Breno Barros

Keyword(s):

Fish Community ◽

Trophic Structure ◽

Natural Habitat ◽

Fish Communities ◽

High Definition ◽

Natural Habitats ◽

Artificial Structures ◽

Artificial Habitats ◽

Coral Reef Area ◽

Mangrove Roots

The present study tested the hypothesis that artificial habitats (pier and bridge) harbour different fish trophic guilds compared with natural habitats (mangrove roots) and that the trophic structure of fish communities on estuarine artificial habitats resembles adjacent coral reefs. High-definition cameras were used to survey the fish community associated with the different structures over a 6-month period. Benthos was also analysed following the point intercept method on the different habitats. In the estuary, fish abundance was up to threefold higher and species richness twofold higher on artificial structures compared with the natural habitat. Mangrove roots were mainly inhabited by juvenile carnivores, whereas the pier and bridge were mostly inhabited by sessile invertebrate feeders and roving herbivores. A less diverse benthic community was found on mangrove roots, mostly composed of mud and algae. In contrast, benthos at the bridge and pier was more diverse and dominated by sponges, octocorals and oysters. In addition, fish trophic structure from an adjacent coral reef area showed more than 60% similarity with the fish community on the artificial structures surveyed. The results of the present study indicate that artificial hard structures support unique fish communities compared with natural estuarine mangrove habitats.

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Effect of Iron Limitation on the Ultrastructure of Agmenellum Quadruplicatum

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100098551 ◽

1981 ◽

Vol 39 ◽

pp. 410-411

Author(s):

L. P. Hardie ◽

D. L. Balkwill ◽

S. E. Stevens

Keyword(s):

Growth Medium ◽

Green Alga ◽

Natural Habitat ◽

Iron Limitation ◽

Natural Environments ◽

Blue Green Alga ◽

Marine Cyanobacterium ◽

Natural Systems ◽

Thin Sectioning ◽

Agmenellum Quadruplicatum

Agmenellum quadruplicatum is a unicellular, non-nitrogen-fixing, marine cyanobacterium (blue-green alga). The ultrastructure of this organism, when grown in the laboratory with all necessary nutrients, has been characterized thoroughly. In contrast, little is known of its ultrastructure in the specific nutrient-limiting conditions typical of its natural habitat. Iron is one of the nutrients likely to limit this organism in such natural environments. It is also of great importance metabolically, being required for both photosynthesis and assimilation of nitrate. The purpose of this study was to assess the effects (if any) of iron limitation on the ultrastructure of A. quadruplicatum. It was part of a broader endeavor to elucidate the ultrastructure of cyanobacteria in natural systemsActively growing cells were placed in a growth medium containing 1% of its usual iron. The cultures were then sampled periodically for 10 days and prepared for thin sectioning TEM to assess the effects of iron limitation.

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Fish communities in two environmentally different estuarine systems of Mexico

Journal of Fish Biology ◽

10.1016/s0022-1112(02)92076-3 ◽

2002 ◽

Vol 0 ◽

Author(s):

A Raz-Guzman

Keyword(s):

Fish Communities ◽

Estuarine Systems

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