scholarly journals Anthropogenic structures as a spatial refuge from predation for the invasive bryozoan Bugula neritina

2011 ◽  
Vol 427 ◽  
pp. 95-103 ◽  
Author(s):  
CP Dumont ◽  
LG Harris ◽  
CF Gaymer
Keyword(s):  
Bugula Neritina ◽  
Spatial Refuge ◽  
Anthropogenic Structures ◽  
Invasive Bryozoan

Florida Inlets and Intertidal Biofouling Communities

2017 ◽  
Vol 51 (2) ◽  
pp. 7-21 ◽  
Author(s):  
Kevin B. Johnson ◽  
Jayden L. Roberts
Keyword(s):  
Atlantic Coast ◽  
Environmental Indicators ◽  
Rocky Intertidal ◽  
Drainage Basins ◽  
Bugula Neritina ◽  
Bare Rock ◽  
The North ◽  
Latitudinal Patterns ◽  
Invasive Bryozoan ◽  
Community Component

AbstractThis study reports on the identity and coverage of rocky intertidal species in the major inlets of Florida’s Atlantic coast. From north to south, these inlets are Fort George, St. Augustine, Ponce De Leon, Port Canaveral, Sebastian, Fort Pierce, Jupiter, Lake Worth, Boca Raton, Port Everglades, Baker’s Haulover, and Port of Miami. Dominant coverage in the southerly inlets included star corals (Siderastrea radians, 62% Port of Miami), ribbed barnacles (Tetraclita stalactifera, 18% Port Everglades), and zoanthid corals (Palythoa sp., 40% Baker’s Haulover). In the north, the community shifted and species absent in the south became common (e.g., eastern oysters Crassostrea virginica, 9% Fort George, 15% St. Augustine; the macroalga Enteromorpha lactuca, 10% Fort George, 17% Sebastian Inlet). The invasive bryozoan Bugula neritina was always present north of the Port of Miami and was a major community component north of Port Everglades (e.g., 27% Fort Pierce Inlet and 22% Ponce de Leon Inlet). Correlations between intertidal populations and environmental indicators included the oyster C. virginica with various sea surface temperature (SST) parameters (e.g., inverse correlations with max SST, R2 = 0.81, p = .038). Likewise, the coralline alga Pneophyllum fragile was correlated with various SST parameters (e.g., min SST, R2 = 0.51, p = .020). Bare rock and B. neritina both showed inverse correlations with the human population of inlet drainage basins (R2 = 0.28, p = .040 and R2 = 0.33, p = .026, respectively), the latter relationship an unexpected pattern for a notorious invader. These data show latitudinal patterns and provide baselines for future comparisons in the wake of projected climate change.

scholarly journals Biofouling on artificial substrata in Muscat waters

2015 ◽  
Vol 20 ◽  
pp. 24 ◽  
Author(s):  
Sergey Dobretsov
Keyword(s):  
Community Composition ◽  
Ceramic Tiles ◽  
Bugula Neritina ◽  
Fouling Communities ◽  
Artificial Substrata ◽  
Future Studies ◽  
Minimal Weight ◽  
Maximal Weight ◽  
Wet Weight ◽  
Invasive Bryozoan

Macro-fouling communities developed on acrylic, aluminum, wood and fiberglass panels were investigated after 4 months exposure in Marina Bandar al Rawdah and Marina Shangri La. Wet weight of biofouling was about 2-fold higher in Marina Bandar Rawdah and different communities were formed on the front and back sides of the panels. Differences between communities on different materials were less pronounced. In the second study, wet weight and community composition of macro-fouling communities on ceramic tiles at the depth of 1 m and 5 m in Marina Bandar al Rawdah were investigated. During 2008 – 2010, there were no differences between biomass of communities, while in 2011 biomass of macro-fouling was higher on tiles at 5 m. In December 2008 the minimal weight (0 kg/m2) and in September 2011 the maximal weight (26.3 kg/m2) of macro-fouling communities were recorded. In total, 27 invertebrate fouling species were found, which mostly (33%) belonged to phylum Ectoprocta. Three invasive bryozoan (Bugula neritina, Zoobotryon verticillatum and Schizoporella errata) and one invasive tunicate (Ciona intestinalis) species were observed. Overall, this study indicates high biofouling pressure in Muscat marinas and suggests necessity of future studies of fouling communities in Oman waters. 

A Simplified Placenta-Like Brooding System in Bulgula neritina (Bryozoa)

1972 ◽  
Vol 30 ◽  
pp. 130-131 ◽  
Author(s):  
Robert M. Woollacott ◽  
Russel L. Zimmer
Keyword(s):  
Bugula Neritina ◽  
Brood Chamber ◽  
Tissue Mass ◽  
Embryonic Nutrition

Embryos of many bryozoans are retained during development within a helmetshaped brood chamber that is composed of two parts: an outer, double-walled, calcified ooecial fold and an inner, membranous ooecial vesicle. The embryo is brooded “externally” between these two structures and, in Bugula neritina, increases 27 to 35 fold in volume during its embryogenesis. Since the blastocoelic space is obliterated early in development, this change represents an increase in tissue mass. Clearly, some form of extra-embryonic nutrition is implicated. Calvet first noted that the lining of the ooecial vesicle in regions adjacent to the embryo undergoes a pronounced hypertrophy, and Marcus later proposed that this epithelium provides nutrition to the young. Sileh, however, suggested that the hypertrophied layer functions only as a supportive cushion.

scholarly journals TOXIC EFFECTS OF COPPER ON ATTACHMENT AND GROWTH OF BUGULA NERITINA

1946 ◽  
Vol 90 (2) ◽  
pp. 122-140 ◽  
Author(s):  
MILTON A. MILLER
Keyword(s):  
Toxic Effects ◽  
Bugula Neritina

The fourth coast, revisited

2021 ◽  
pp. 205301962110446
Author(s):  
John Kim
Keyword(s):  
Mississippi River ◽  
Entire Length ◽  
Anthropogenic Structures

The author traveled for 2.5 months by canoe and other modes of transport down the entire length of the Mississippi River with the Mississippi. An Anthropocene River project. Reflecting on this journey, this essay revisits Catherine Brown and William Morrish’s 1991 essay, The Fourth Coast: An Expedition on the Mississippi River, in which Brown and Morrish document their research efforts to identify coherent anthropogenic structures and systems that could warrant the characterization of the Mississippi River as a Fourth Coast. To encourage a flourishing of overlapping multispecies life, the essay moves beyond their spatial reimagining by defining the “distributed nature of home” as a model for conceptualizing distributed spatialities and plural temporalities along the Mississippi River.

scholarly journals Anthropogenic Elements of the Cultural Landscape of the Island Goli Otok in Croatia

Prostor ◽  
2021 ◽  
Vol 29 (1 (61)) ◽  
pp. 30-41
Author(s):  
Vladi Bralić ◽  
Damir Krajnik
Keyword(s):  
Complex System ◽  
Cultural Landscape ◽  
Political Prisoners ◽  
The Political ◽  
Unique Identity ◽  
Anthropogenic Structures ◽  
Prison Camp

The island Goli otok (north Adriatic, Croatia) cultural landscape is a complex system of interactions between people and nature, which has arisen through the anthropogenic use of this unique natural space with the aim of implementing ideas of the ideological re-education of political prisoners between 1949 and 1956, and the punishment of criminals and some political prisoners between 1956 and 1988. The most significant elements of the cultural landscape of the island are comprised of the anthropogenic structures of the political prison camp which deliberately used the natural features of the landscape in such a way as to enable methods of coercion of prisoners, which finally resulted in the unique identity of the space as a unit.

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