The Intertidal Zone-Forming Species on Rocky Shores of the East Australian Coast

1960 ◽  
Vol 48 (1) ◽  
pp. 1 ◽  
Author(s):  
Eric R. Guiler
Keyword(s):  
Intertidal Zone ◽  
Rocky Shores

Intertidal Zonation of the Exposed Rocky Shores of Tasmania and its Relationship with the Rest of Australia

1960 ◽  
Vol 11 (2) ◽  
pp. 182 ◽  
Author(s):  
I Bennett ◽  
EC Pope
Keyword(s):  
Environmental Factors ◽  
Intertidal Zone ◽  
Rocky Shores ◽  
Ecological Studies ◽  
Present Survey ◽  
South Eastern ◽  
Southeast Australia ◽  
Intertidal Zonation ◽  
Eastern Australia ◽  
Cool Temperate

The environmental factors and the zonation of the plants and animals on the exposed rocky coasts of Tasmania are described, and the findings of the present survey are compared with those of other workers both in Tasmania and in southeast Australia generally. A distinct biota, traces of which were first noticed in Victoria by the present authors (1963), is evident on Tasmanian shores, and the validity of the authors' cool temperate Maugean Province is reaffirmed. This paper concludes the series of ecological studies (Dakin, Bennett, and Pope 1948; Bennett and Pope 1953) on the intertidal zone of south-eastern Australia.

CO2 generation by calcified invertebrates along rocky shores of Brittany, France

2013 ◽  
Vol 64 (2) ◽  
pp. 91 ◽  
Author(s):  
Christian Hily ◽  
Jacques Grall ◽  
Laurent Chauvaud ◽  
Morgane Lejart ◽  
Jacques Clavier
Keyword(s):  
Intertidal Zone ◽  
Rocky Shore ◽  
Regional Scale ◽  
Coastal Environment ◽  
Co2 Production ◽  
Rocky Shores ◽  
Atlantic Region ◽  
The North ◽  
Wide Range ◽  
North Eastern

Many autochthonous and alien macroinvertebrates of the intertidal zone are biocalcifiers, and the present study proposes a first assessment of their calcimass and their annual calcium carbonate (CaCO3) production at a regional scale, along 500 km of the coastline of Brittany, France, which represents a wide range of the rocky-shore habitats commonly encountered in the north-eastern Atlantic region. All sites considered together gave a mean calcimass estimate of 5327 g m–2. The corresponding mean CaCO3 gross production was 2584 g m–2 year–1. The net production (including dissolution) by biocalcification was 2384 g CaCO3 m–2 year–1. Estimations of CO2 production via both calcification and respiration were carried out in particular for the phylum Mollusca and for crustacean barnacles, dominating in terms of calcimass. Mean CO2 production obtained by summing CO2 fluxes related to net CaCO3 production and respiration for all sampled sites was 22.9 mol m–2 year–1. These results illustrate the significance of CO2 production during biogenic CaCO3 precipitation of intertidal invertebrates in such temperate coastal environment compared with tropical zones and the contribution of the shelves to the global CaCO3 budget.

Intertidal Zonation of the Exposed Rocky Shores of Victoria, Together with a Rearrangement of the Biogeographical Provinces of Temperate Australian Shores

1953 ◽  
Vol 4 (1) ◽  
pp. 105 ◽  
Author(s):  
I Bennett ◽  
EC Pope
Keyword(s):  
Environmental Factors ◽  
Intertidal Zone ◽  
Rocky Shores ◽  
Ecological Studies ◽  
South Eastern ◽  
Intertidal Zonation ◽  
Eastern Australia ◽  
Cool Temperate ◽  
Rocky Coasts ◽  
South Eastern Australia

This paper continues previous ecological studies (Dakin, Bennett, and Pope 1948) of the intertidal zone of south-eastern Australia. The environmental factors and the zonation of the animals and plants on the exposed rocky coasts of Victoria are described. As a result of this survey a rearrangement of the biogeographical provinces of the Australian littoral is made, and a new Cool-temperate fauna and flora are recognized on the coast of Victoria.

scholarly journals Spatial variability in the population of Isognomon bicolor (C.B. Adams, 1845) (mollusca, bivalvia) on rocky shores in Espírito Santo, Brazil

2010 ◽  
Vol 58 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Gabriela Carvalho Zamprogno ◽  
Luiz Loureiro Fernandes ◽  
Flavio da Costa Fernandes
Keyword(s):  
Spatial Variability ◽  
Intertidal Zone ◽  
The State ◽  
Rocky Shores ◽  
Espírito Santo ◽  
Flat Surfaces ◽  
Substrate Heterogeneity ◽  
Espirito Santo ◽  
Established Population

This study aimed to compare the density of Isognomon bicolor on four rocky shores of the State of Espírito Santo, Brazil. Further, size and weight comparisons were undertaken for the flat and creviced surfaces. Quarterly samplings were taken in 2006 and 2007, by removing organisms from 10 x 10 cm quadrants in the mid-intertidal zone, with five samples from flat surfaces and five from crevices. Although densities of I. bicolor were considered low as compared with those of other studies, this species is well established in the State. The most well-established population of I. bicolor was found in the rock crevices. The most important factor for the establishment of I. bicolor on rocky shores is substrate heterogeneity.

PERSISTENCE AND WEATHERING OF EXXON VALDEZ OIL IN THE INTERTIDAL ZONE—3.5 YEARS LATER

1993 ◽  
Vol 1993 (1) ◽  
pp. 279-286 ◽  
Author(s):  
Jacqueline Michel ◽  
Miles O. Hayes
Keyword(s):  
Intertidal Zone ◽  
Chemical Characterization ◽  
Hot Water ◽  
Polynuclear Aromatic Hydrocarbons ◽  
Total Petroleum Hydrocarbons ◽  
Gas Chromatography Mass Spectrometry ◽  
Rocky Shores ◽  
Treatment Techniques ◽  
Upper Intertidal ◽  
Detailed Chemical

ABSTRACT Intertidal surveys of 18 stations in Prince William Sound have been repeated up to 12 times between September 1989 and August 1992. Four of the stations were set-asides where no treatment was conducted. Shoreline treatment techniques applied at the other stations included: hot-water flushing, nutrient addition, manual removal, berm relocation, and sediment tilling. Over 800 sediment samples have been analyzed for total petroleum hydrocarbons. Detailed chemical characterization by gas chromatography/mass spectrometry (GC/MS) has been conducted on over 100 samples to track weathering patterns of the persistence of polynuclear aromatic hydrocarbons (PAHs). Shoreline environments studied include: cobble/boulder platforms with berms, bayhead beaches, sheltered rubble slopes, and sheltered bedrock. Major conclusions are:Surface oil was reduced to very small amounts as of 1991, though there was little change between 1991 and 1992, particularly in sheltered environments.Oil penetrated deeply into gravel storm berms, beyond the depth of annual reworking. Berm relocation was required to speed removal of this highly stranded oil at 30 locations and it was very effective. The normal beach profile was reestablished after one storm season at many sites, depending upon the magnitude of the operation and rates of longshore sediment transport.On some gravel beaches, oil penetrated to greater than 50 cm in the upper intertidal zone. By August 1992, only the deepest layer of oil, greater than 25 cm, remained. This residual oil was moderately weathered, showing removal of all 2-ring PAHs.On sheltered rubble shores, oil had penetrated the loose surface deposits. The subsurface oil showed significant weathering but it was much slower than other areas, and still contained some 2-ring PAHs.On sheltered rocky shores, oil was more persistent and likely to form pavements in the upper intertidal zone on sites not treated.

Tetraclita (Cirripedia, Thoracica) tests as an important habitat for intertidal isopods and other marine and semi-terrestrial fauna on tropical rocky shores

Crustaceana ◽  
2016 ◽  
Vol 89 (9) ◽  
pp. 985-1040 ◽  
Author(s):  
C. K. Chim ◽  
H. P.-S. Wong ◽  
K. S. Tan
Keyword(s):  
Environmental Stress ◽  
Intertidal Zone ◽  
Rocky Shores ◽  
Insect Larvae ◽  
Marine Fauna ◽  
Dominant Animal ◽  
Intertidal Species ◽  
Important Habitat ◽  
Muricid Gastropods

The barnaclesTetraclita singaporensisandT. squamosahave a thick test to protect the animals against the diverse environmental stress of the tropical intertidal zone and also against predation by muricid gastropods. After the death of the barnacle, however, the empty test is often taken over by other marine fauna as well as semi-terrestrial animals. The sphaeromatid isopodDynamenella ptychurawas the most abundant inhabitant in empty tests observed in Singapore and Malaysia. Ovigerous crustaceans were common. Gastropod specimens comprised almost entirely juveniles of common intertidal species, including those of the littorinidsLittoraria articulataandL. strigata. Gastropod eggs and veligers, insect larvae, pupae and nymphs, and spider spiderlings and immatures were also present. The haminoeid gastropodSmaragdinellawas the dominant animal colonizing barnacles in a succession experiment. Temperature was significantly lower inside the empty test than outside, by 0.2°C. Almost 40% of the barnacle tests remained attached to the substratum for more than four months after the death of the individuals.

scholarly journals Hydrozoan colonization and succession in the tidal and subtidal zones in Surtsey during the period 1967 to 1984

2020 ◽  
Vol 14 ◽  
pp. 131-139
Author(s):  
Steffen Lundsteen ◽  
Erlingur Hauksson ◽  
Karl Gunnarsson
Keyword(s):  
Intertidal Zone ◽  
Marine Invertebrate ◽  
Subtidal Zone ◽  
Rocky Shores ◽  
Species Numbers ◽  
Number Of Species ◽  
Rocky Bottom ◽  
Floating Objects

This article reports on results of investigations of hydrozoans collected in Surtsey, Iceland in the period 1967 – 1984. Samples were collected in the intertidal zone and by divers in the subtidal zone down to 40 m. A list and illustrations of hydrozoan species found in the intertidal and subtidal rocky bottom in Surtsey are presented. Species numbers increased steadily during the study period and in 1984 a total of 37 species were recorded in Surtsey making hydrozoans one of the most diverse marine invertebrate groups in Surtsey. Among hydrozoans found during the study are 8 species not previously recorded in Iceland. Apart from dispersal by planktonic medusa, rafting of polyps on floating objects drifting to Surtsey is thought to be important for colonisation of hydrozoan fauna in Surtsey. At the end of the investigations period, 20 years after formation of rocky shores on the island, number of species seemed to be continually increasing

scholarly journals Marine invertebrate and seaweed biodiversity of continental coastal Ecuador

2020 ◽  
Vol 8 ◽  
Author(s):  
Maritza Cárdenas-Calle ◽  
Elba Mora ◽  
Genoveva Torres ◽  
Julián Pérez-Correa ◽  
Gregorio Bigatti ◽  
...  
Keyword(s):  
Protected Areas ◽  
Intertidal Zone ◽  
Large Scale ◽  
Marine Invertebrate ◽  
Benthic Communities ◽  
Biological Data ◽  
Rocky Shores ◽  
Macroinvertebrate Communities ◽  
The Status

This study summarises the diversity of living macroinvertebrates and seaweeds from the intertidal and subtidal rocky shores along Ecuadorian continental coast. Benthic macroinvertebrate communities and seaweeds were quantified over quadrants (50 × 50 cm) randomly placed on transects of 50 m length. A checklist of 612 species was generated: 479 species of macroinvertebrates and 133 species of seaweeds. Groups recorded were Mollusca (184 species), Cnidaria (70), Arthropoda (68), Annelida (60), Echinodermata (42), Chordata (18), Bryozoa (13), Porifera (22), Sipuncula (2), Brachiopoda and Platyhelminthes (only identified as morphotypes). The seaweeds were represented by Rhodophyta (78), Chlorophyta (37), Ochrophyta (13), Cyanobacteria (5) and 19 biotic complexes. Furthermore, 22 new taxa and six alien species were recorded from the intertidal zone. This study provides the first large scale report of benthic communities in different marine coastal ecosystems in mainland Ecuador, covering 1,478 km2 of protected areas and 382 km2 of non-protected areas. The highest benthic diversity was registered in the protected areas and rocky shores from the intertidal zone. The biological data, herein reported, are useful for a long-term monitoring programme to evaluate the status of conservation and to detect rapid changes in the benthic biodiversity from coastal areas.

Gregarious larval settlement within a restricted intertidal zone and sex differences in subsequent mortality in the polygynous saltmarsh isopod Paragnathia formica (Crustacea: Isopoda)

1987 ◽  
Vol 67 (3) ◽  
pp. 663-678 ◽  
Author(s):  
N. P. D. Upton
Keyword(s):  
Sex Differences ◽  
Intertidal Zone ◽  
Rocky Shore ◽  
Larval Settlement ◽  
Rocky Shores ◽  
Relative Importance ◽  
Confounding Variable ◽  
Biological Factors ◽  
Intertidal Invertebrates ◽  
Rocky Shore Communities

The highly restricted ranges of many intertidal invertebrates, and the relative importance of physical and biological factors on settlement and subsequent mortality, have attracted much attention from ecologists. Most workers have concentrated on rocky shore communities, where patterns of zonation are often very clear (for reviews, see Stephenson & Stephenson, 1949, 1972; Southward, 1958; Lewis, 1955, 1961, 1964), whilst few have looked for such effects within saltmarshes (for reviews, see Long & Mason, 1983; Foster, In Press). Since most saltmarsh invertebrates are infaunal, patterns of zonation are not immediately obvious, but may be of particular interest; the influence of tidal regimes on invertebrate ranges may be more precise in sheltered saltmarsh habitats than on rocky shores, where exposure to wave action is a major confounding variable.

Sign in / Sign up

Export Citation Format

Share Document