Disturbance and Community Structure in a Shallow Water Sand Flat

Ecology ◽  
1981 ◽  
Vol 62 (4) ◽  
pp. 1052-1066 ◽  
Author(s):  
Sarah Ann Woodin
Keyword(s):  
Community Structure ◽  
Shallow Water ◽  
Sand Flat

Development of macroinvertebrate community structure associated with zebra mussel (Dreissena polymorpha) colonization of artificial substrates

1995 ◽  
Vol 73 (8) ◽  
pp. 1438-1443 ◽  
Author(s):  
Patricia A. Wisenden ◽  
Robert C. Bailey
Keyword(s):  
Community Structure ◽  
Shallow Water ◽  
Food Supply ◽  
Zebra Mussel ◽  
Dreissena Polymorpha ◽  
Lake Erie ◽  
Zebra Mussels ◽  
Artificial Substrates ◽  
Macroinvertebrate Communities ◽  
Protected Site

We used artificial substrates (rocks < 1500 cm2 surface area) in shallow water (2 m) to assess the development of epilithic macroinvertebrate communities in the presence of zebra mussels. At a turbulent site (Wheatley, Lake Erie), previously colonized (with a non-zebra mussel community) and uncolonized rocks left for 1 year both had lower densities of total invertebrates than previously colonized rocks recovered after only 1 day. As zebra mussels colonized the rocks, Gammarus sp. (amphipods) increased in density, while Chironomini and Tanypodinae (midges), Polycentropus sp. (caddisflies), and Physella sp. and Pleurocera sp. (snails) declined. At a protected site (Stoney Point, Lake St. Clair), previously colonized rocks initially (2 months) had higher densities of many taxa, including zebra mussels, than uncolonized rocks. This difference disappeared after 1 year, as zebra mussels increased on all rocks. Gammarus sp. maintained its numbers, while Tricladida (flatworms) increased and Oecetis sp. (caddisflies), Physella sp., Pleurocera sp., and Tanypodinae declined. Although a similar "zebra mussel – amphipod" community developed on rocks at both sites, we hypothesize that at the turbulent site, zebra mussels and amphipods have a shared tolerance of unstable habitats, and zebra mussels facilitate amphipod colonization of rocks by increasing microhabitat stability and food supply. At the protected site, zebra mussels outcompete other surface dwellers like snails for space, and facilitate the colonization of scavenger–omnivores like amphipods and flatworms.

Community structure of Harpacticoida and Canuelloida (Crustacea, Copepoda) on the Great Meteor Seamount (North-east Atlantic Ocean)

2019 ◽  
Vol 99 (06) ◽  
pp. 1325-1342 ◽  
Author(s):  
Karin Richter ◽  
Kai Horst George
Keyword(s):  
Community Structure ◽  
Atlantic Ocean ◽  
Shallow Water ◽  
Oceanic Islands ◽  
Species Level ◽  
North East ◽  
Analysis Of Similarity ◽  
Distribution Ranges ◽  
First Time ◽  
Great Meteor Seamount

AbstractDuring the expedition POS397 ‘GroMet’ in 2010 the sediments of the Great Meteor Seamount (GMS) plateau were sampled quantitatively for the first time, allowing statistical analysis of the community structure of Harpacticoida and Canuelloida. Analysis of similarity revealed no differences between three geographic regions at family/species level. Analysis of diversity indicated slightly greater diversity in the south, with more species belonging to more genera/families. Dispersal opportunities possibly occurring at the plateau (emergence, erosion, rafting) are discussed. Of 18 investigated families 106 species were identified, but only 5.66% were already scientifically known and widely distributed. Within the investigated families, 37.74% of the species belonged to shallow-water genera, leading to the conclusion that the plateau was once connected to shallow-water habitats, perhaps functioning as a stepping stone, but is now geographically isolated. This isolation is most likely due to seafloor spreading of the Atlantic Ocean and descending of the GMS. On the plateau, six species with wider distribution ranges were present, indicating that species may arrive accidentally, but their means of settlement remains unknown. Comparisons of the identified GMS plateau fauna with that of other seamounts and mid-oceanic islands revealed similar communities at family level, but at species level the GMS shares only one species with the Seine Seamount; all other elevations had more species in common. Hence, the GMS plateau is considered to be isolated regarding benthic Copepoda but may play an important role in meiofaunal species distribution, as it represents a shallow-water habitat within the deep sea.

scholarly journals Community Structure of Macrobiota and Environmental Parameters in Shallow Water Hydrothermal Vents off Kueishan Island, Taiwan

PLoS ONE ◽  
2016 ◽  
Vol 11 (2) ◽  
pp. e0148675 ◽  
Author(s):  
Benny Kwok Kan Chan ◽  
Teng-Wei Wang ◽  
Pin-Chen Chen ◽  
Chia-Wei Lin ◽  
Tin-Yam Chan ◽  
...  
Keyword(s):  
Community Structure ◽  
Shallow Water ◽  
Hydrothermal Vents ◽  
Environmental Parameters

scholarly journals Expected Shifts in Nekton Community Following Salinity Reduction: Insights into Restoration and Management of Transitional Water Habitats

Water ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1354 ◽  
Author(s):  
Luca Scapin ◽  
Matteo Zucchetta ◽  
Andrea Bonometto ◽  
Alessandra Feola ◽  
Rossella Boscolo Brusà ◽  
...  
Keyword(s):  
Community Structure ◽  
Shallow Water ◽  
Coastal Lagoons ◽  
Venice Lagoon ◽  
Northern Adriatic Sea ◽  
Management Tools ◽  
Important Species ◽  
Northern Adriatic ◽  
Functional Perspective ◽  
Salinity Reduction

A restoration project is planned to take place in the northern Venice lagoon (northern Adriatic Sea, Italy), aiming at introducing freshwater into a confined shallow water lagoon area and recreating transitional water habitats. This work describes the shifts in the nekton (fish and decapods) community structure to be expected following the future salinity decrease in the restoration area. Nekton was sampled at a series of natural shallow water sites located along salinity gradients in the Venice lagoon. A multivariate GLM approach was followed in order to predict species biomass under the salinity and environmental conditions expected after restoration. Biomass of commercially important species, as well as species of conservation interest, is predicted to increase following salinity reduction and habitat changes. From a functional perspective, an increase in biomass of hyperbenthivores-zooplanctivores, hyperbenthivores-piscivores and detritivores is also expected. This study emphasises the efficacy of a predictive approach for both ecological restoration and ecosystem management in transitional waters. By providing scenarios of community structure, the outcomes of this work could be employed in future evaluations of restoration success in the Venice lagoon, as well as to develop management tools to forecast the effects of alterations of salinity regimes in coastal lagoons due to climate change.

Community structure of shallow water Alcyonacea (Anthozoa: Octocorallia) from the southern Tropical Eastern Pacific

2018 ◽  
Vol 33 (2) ◽  
pp. 457-469 ◽  
Author(s):  
Sascha C. C. Steiner ◽  
Bernhard Riegl ◽  
Antonella Lavorato ◽  
Jenny Rodríguez
Keyword(s):  
Community Structure ◽  
Shallow Water ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific
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