scholarly journals Between the Rocks and the Waves: Legislation and perceptions of the Exploitation of Perna perna from the Rocky Shores of Santa Catarina Island

2020 ◽  
pp. 87-106
Author(s):  
Thaís Fonseca Rech ◽  
Marinez Garcia Scherer
Keyword(s):  
Human Consumption ◽  
Rocky Shores ◽  
Perna Perna ◽  
Santa Catarina ◽  
The North ◽  
Rotation Methods ◽  
Capture Method ◽  
Commercial Purpose ◽  
The Waves ◽  
Provisioning Services

The removal of shellfish (Perna perna) from de rocky shores for human consumption is a traditional activity in Santa Catarina Island (ISC), Florianopolis, Brazil, constituting a provisioning ecosystem service. This activity is originally linked to fishing and subsistence; however, it acquired commercial purpose after the 1980’s. After the 1990’s, shellfish started to be exploited as seeds for mariculture, increasing pressure on natural stocks. It is fundamental to know the aspects of the extraction of shellfish to manage this resource. This work sought to fill in the gaps in the knowledge on the extraction, the main points being the identity of the actors involved, the location of extraction sites and the legislation relating to the activity. As to describe the characteristics of this activity, a set of interviews took place with key members of the neighboring communities, experts in related fields, and with beach goers in eight locations in ISC. The legislation found covers several of the points required for the management of the activity; however, no indication of supervision by the competent bodies was found, nor the required licenses were issued. The stocks are located on the rocky stretches of the East side of the island and on the more exposed parts of the North shore. The purpose of the mussels affected the capture method: mussels intended for commercialization was extracted by diving while mussels for own consumption were extracted from subaerial shores. All the extractors located were male and lived in Florianopolis, who favor summer months and extract only occasionally. The extractors believe that the amount of available P. perna has decreased, but the change of the source of mariculture seeds from rocky shores to artificial collectors decreased the pressure on said shores, but their rotation methods used are rudimentary. Failures in management, in rotation, in the issuing licenses, lack of supervision, and pollution are the main threats in maintaining the provision of service represented by mussels. This research subsidizes the decision making and serves as bases for other studies on provisioning services of the natural rocky coasts. Keywords: Mussels, Coastal Management, Provisioning services.

The generation of waves by wind

1952 ◽  
Vol 215 (1122) ◽  
pp. 299-328 ◽  
Keyword(s):  
Ocean Waves ◽  
Irish Sea ◽  
North Coast ◽  
Empirical Relationships ◽  
The North ◽  
Component Wave ◽  
Wave Trains ◽  
The Irish Sea ◽  
The Waves ◽  
Group Velocities

This paper describes an investigation of the height and length of ocean waves and swell in relation to the strength, extent and duration of the wind in the generating area, and the subsequent travel of the swell through calm and disturbed water. The investigation is based on records of waves made on the north coast of Cornwall, in the Irish Sea and in Lough Neagh. It is a practical continuation of the work of Barber & Ursell (1948), who showed that the waves leaving the generating area behave as a continuous spectrum of component wave trains which travel independently with the group velocities appropriate to their periods. The spectral distribution of energy in the storm area is considered, and the relative amplitudes of the different components are deduced empirically under various wind conditions. The results indicate that the wave characteristics become practically independent of fetch after 200 to 300 miles, and that in the equilibrium condition the steepness of the highest waves is inversely proportional to the square root of the wind speed. Some theoretical foundation can be found for the form of the empirical relationships if it is assumed that the wind acts on each wave component independently, and that the sheltering coefficient used by Jeffreys is proportional to the wave steepness. The results provide a basis for making reasonably accurate predictions of waves and swell from meteorological charts and forecasts.

Acentropus niveus (Oliv.) (Lepidoptera: Pyralidae) on the north shore of Lake Erie with a consideration of its distribution in North America

1950 ◽  
Vol 82 (12) ◽  
pp. 250-252 ◽  
Author(s):  
W. W. Judd
Keyword(s):  
North America ◽  
Green Alga ◽  
Lake Erie ◽  
Filamentous Green Alga ◽  
North Shore ◽  
The North ◽  
Lepidoptera Pyralidae ◽  
Shallow Bay ◽  
The Village ◽  
The Waves

On July 12, 1950 a collection of adults of the moth Acentropus niveus (Oliv.) was made on the north shore of Lake Erie near the village of South Cayuga, Ontario (Maps A, B-3). At the southern limits of the townships of Dunn and South Cayuga (Haldimand County) a shallow bay extends for a distance of about two miles along the shore of the lake (Map A). Along this bay is a sandy or gravelly beach ten to twenty yards wide backed by a cliff of clay that rises abruptly above the beach. On the day the collections were made the sky was clear and a brisk southerly breeze was causing waves to wash on the beach. The action of the waves had deposited debris, consisting largely of tangled masses of a filamentous green alga and exuviae of the mayfly Hexagenia occulta, in a windrow six inches to two feet wide along the shore. The moths ere found in this debris, most of them lying dead and with bedraggled wings, while some lay on their backs with wings stuck to the damp surface and with legs kicking and a few were crawling about on the debris.

Palmaria hecatensis sp. nov. (Rhodophyta, Palmariales) from British Columbia and Alaska with a survey of other Palmaria species

1985 ◽  
Vol 63 (3) ◽  
pp. 474-482 ◽  
Author(s):  
Michael W. Hawkes
Keyword(s):  
British Columbia ◽  
Pacific Ocean ◽  
Geographical Distribution ◽  
North Pacific ◽  
North Pacific Ocean ◽  
Aleutian Islands ◽  
Rocky Shores ◽  
Intertidal Zones ◽  
The North ◽  
The North Pacific

Palmaria hecatensis sp. nov. is described based on material from northern British Columbia. Male gametophytes and tetrasporophytes are thick, coriaceous, flattened blades, linear to lobed in habit and arise from an extensive encrusting basal holdfast. Putative female gametophytes are microscopic multicellular discs. Palmaria hecatensis grows on rocky shores in the midintertidal to lower intertidal zones and has a known geographical distribution from Nootka Island, Vancouver Island, B.C., to Shemya Island in the Aleutian Islands, Alaska. Palmaria hecatensis is compared with other species in the genus and, in addition, another distinctive (and possibly undescribed) Palmaria species from British Columbia and Alaska is discussed, bringing the total number of Palmaria species reported in the North Pacific Ocean to six.

scholarly journals The holoplankton of the Santa Catarina coast, southern Brazil

2011 ◽  
Vol 83 (2) ◽  
pp. 575-588 ◽  
Author(s):  
Charrid Resgalla Jr
Keyword(s):  
Coastal Waters ◽  
Zooplankton Community ◽  
The State ◽  
Zooplankton Abundance ◽  
Santa Catarina ◽  
The North ◽  
Or Groups ◽  
Parvocalanus Crassirostris ◽  
Water Species ◽  
Potential Use

This paper presents information from different sampling surveys carried out along the Santa Catarina coast in order to outline the biogeographical characteristics of the zooplankton in this region and identify species or groups of species with potential use as bioindicators. Based on a checklist of species of the zooplankton community in the state, it was observed that, in the warmer months of the year, the fauna is similar to that of the states of Paraná and São Paulo (e.g. Creseis virgula f. virgula, Penilia avirostris; Acartia lilljeborgi and Oithona oswaldocruzi), while in the colder months there are coastal representatives of the fauna of Rio Grande do Sul (e.g. Acartia tonsa). However, the zooplankton consists predominantly of warm water species for most of the year, which is typical of Tropical Shelf Waters. Various species of zooplankton can be used as hydrological indicators, enabling a distinction to be made between coastal waters which are influenced by continental inputs (e.g. Paracalanus quasimodo and Parvocalanus crassirostris), common in the north of the state, and processes of upwelling (e.g. Podon intermedius) and the influence of the Subtropical Shelf Front (e.g. Pleopis polyphemoides), coming from the south. The different environments investigated present a zooplankton abundance that depends on the influence of continental inputs and the possibility of their retaining and contribution for the coastal enrichment, which varies seasonally

An exposure scale for marine shores in western Norway

1978 ◽  
Vol 58 (4) ◽  
pp. 975-996 ◽  
Author(s):  
D. H. Dalby ◽  
E. B. Cowell ◽  
W. J. Syratt ◽  
J. H. Crothers
Keyword(s):  
Species Abundance ◽  
Shell Shape ◽  
Rocky Shores ◽  
Shape Variation ◽  
Nucella Lapillus ◽  
Extended Form ◽  
Independent Evidence ◽  
The North ◽  
Western Norway ◽  
The North Sea

A rocky shore exposure scale, intended primarily for use in the Fensfjord area, Western Norway, has been prepared. This scale is developed from an earlier scale devised by Ballantine for Milford Haven, Wales, making use of species abundance curves along the wave exposure gradient. Independent evidence for the validity of the scale is provided by shell shape variation in Nucella lapillus and by the height of the black lichen zone in the supralittoral fringe. The successive steps in the preparation of the scale are outlined, definitions of the exposure grades are given in tabular form for the restricted set of species analysed numerically and descriptions are provided in an extended form to provide a fuller picture for users of the scale. It is believed that the scale will prove applicable to other rocky shores around the North Sea.

scholarly journals Ocorrência de Vibrio parahaemolyticus em mexilhões (Perna perna, Linnaeus, 1758) de banco natural do litoral do município de Palhoça, Santa Catarina, Brasil

1994 ◽  
Vol 10 (3) ◽  
pp. 379-386 ◽  
Author(s):  
Rita Maria B. Archer ◽  
Eliane Moretto
Keyword(s):  
Vibrio Parahaemolyticus ◽  
Bile Salts ◽  
Perna Perna ◽  
Santa Catarina

Foi estudada a ocorrência de Vibrio parahaemolyticus em quarenta amostras de mexilhões (Perna perna, Linnaeus, 1758) procedentes de banco natural da praia da Pinheira, município de Palhoça, Santa catarina, durante um período de três meses. Na metodologia de isolamento foi utilizada a técnica do Número Mais Provável (NMP) com enriquecimento em água alcalina peptonada e subseqüente plaqueamento em ágar TCBS (thiosulfate citrate bile salts sucrose). Em 52,5% das amostras de mexilhões foi constatada a presença de Vibrio parahaemolyticus, com níveis de contaminação entre <3 e 93 NMP/g. Na caracterização sorológica de 61 culturas, 36,1% não permitiram a identificação das estruturas antigênicas O e K; 54,1% somente da estrutura K e apenas 8,2% tiveram ambas as estruturas definidas. Nenhuma dessas culturas apresentou positividade para o teste de Kanagawa.

Biochemical responses in farmed mussel Perna perna transplanted to contaminated sites on Santa Catarina Island, SC, Brazil

2000 ◽  
Vol 50 (1-5) ◽  
pp. 411-416 ◽  
Author(s):  
A.C.D. Bainy ◽  
E.A. Almeida ◽  
I.C. Müller ◽  
E.C. Ventura ◽  
I.D. Medeiros
Keyword(s):  
Contaminated Sites ◽  
Perna Perna ◽  
Santa Catarina ◽  
Biochemical Responses

Grenadiers of the World Oceans: Biology, Stock Assessment, and Fisheries

2008 ◽  
Keyword(s):  
Deep Water ◽  
Stock Assessment ◽  
Data Availability ◽  
Biological Knowledge ◽  
Human Consumption ◽  
British Isles ◽  
The North ◽  
Mid Atlantic Ridge ◽  
Pros And Cons ◽  
A Minor

<em>Abstract</em>.—The biology and fisheries of macrourid species in the NE Atlantic are reviewed. Of about 30 species that occur within that area, the roundnose grenadier <em>Coryphaenoides rupestris </em>is one of the main target species of deep-water fisheries. Roughhead grenadier <em>Macrourus berglax </em>is a minor bycatch of other deep-water fisheries and an occasional target of some small fisheries. Other macrourid species are not commercially exploited because they are too small and/or in too deep waters, but some are also taken as accidental bycatch. There are three main fisheries for roundnose grenadier: north and west of the British Isles, Skagerrak, and Mid-Atlantic Ridge. The Skagerrak fishery is mainly for fish meal while the others are for human consumption. Due to data availability, a range of assessment methods has been trialled primarily for stocks to the north and west of the British Isles. Although uncertain, these assessments provide evidence that the stock has been severely depleted. Fisheries were largely unregulated until the early 2000s, but following repeated International Council for the Exploration of the Sea (ICES) advice, total allowable catches were introduced in 2003 together with effort and capacity regulations. Roundnose grenadier is the most studied species. It lives more than 50 years, compared to 30 years or more for roughhead grenadier. The limited knowledge of other species suggests a contrasting picture of maximum age ranging from 10 to 40 years. Taking into account the limited biological knowledge for these species, the pros and cons of the current management regime are discussed.

Subtidal Rocky Shores of the North-West Atlantic Ocean

2019 ◽  
pp. 90-127
Author(s):  
Ladd E. Johnson ◽  
Kathleen A. MacGregor ◽  
Carla A. Narvaez ◽  
Thew S. Suskiewicz
Keyword(s):  
Atlantic Ocean ◽  
Rocky Shores ◽  
North West ◽  
The North
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