Zur Biogeographie des Südwestatlantik mit besonderer Berücksichtigung der Seeanemonen (Coelenterata: Actiniaria)

Riemann-Zürneck, Karin

doi:10.1007/bf01987291

Cited by 28 publications

(29 citation statements)

References 54 publications

(71 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first faunal element (restricted to fjord-specific habitats) has a clear-cut northern distribution limit due to the abrupt change in coastal morphology and, consequently, a lack of suitable habitats further north. This confirms the hypothesis of Riemann-Zürneck (1986) and Brattström & Johanssen (1983) that the South Chilean fauna possess a high percentage of endemic species. The coexistence and merging of the three faunistic elements mentioned above is provoked by an abrupt diversification of coastal morphology south of 42°S due to the splitting up of the straight coastline into numerous channels and fjords.…”

Section: The North Patagonian Zone (Puerto Montt To Peninsula Taitao)supporting

confidence: 90%

Biodiversity of Chilean sea anemones (Cnidaria: Anthozoa): distribution patterns and zoogeographic implications, including new records for the fjord region

Häussermann

2006

Investig. mar.

View full text Add to dashboard Cite

ABSTRACT. The present paper provides a complete zoogeographical analysis of the sea anemones (Actiniaria and Corallimorpharia) of continental Chile. The species described in the primary literature are listed, including depth and distribution records. Records and the taxonomic status of many eastern South Pacific species are doubtful and need revision and confirmation. Since 1994, we have collected more than 1200 specimens belonging to at least 41 species of Actiniaria and Corallimorpharia. We sampled more than 170 sites along the Chilean coast between Arica (18°30'S, 70°19'W) and the Straits of Magellan (53°36'S, 70°56'W) from the intertidal to 40 m depth. The results of three recent expeditions to the Guaitecas Islands (44°S) and the Central Patagonian Zone (48°-52°S) are included in this study. In the fjord Comau, an ROV was used to detect the bathymetrical distribution of sea anemones down to 255 m. A distribution map of the studied shallow water sea anemones is given. The northern part of the fjord region is inhabited by the most species (27). The results show the continuation of species characteristic for the exposed coast south of 42°S and the joining of typical fjord species at this latitude. This differs from the classical concept of an abrupt change in the faunal composition south of 42°S.

show abstract

Section: The North Patagonian Zone (Puerto Montt To Peninsula Taitao)supporting

confidence: 90%

Biodiversity of Chilean sea anemones (Cnidaria: Anthozoa): distribution patterns and zoogeographic implications, including new records for the fjord region

Häussermann

2006

Investig. mar.

View full text Add to dashboard Cite

show abstract

“…All 4 species also inhabit the Antarctic Ocean to a lesser or greater extent. Among the sea anemones, Hormathia pectinata (Hertwig), Epiactis georgiana Carlgren, and Isosicyonis alba (Studer) are also discontinuously distributed along the Argentine shelf break (Riemann-Zirneck, 1986).…”

Section: Biogeography and Physiographymentioning

confidence: 99%

The benthic deep-water siphonophore Rhodalia miranda and other coelenterates in the south-west Atlantic: ecological and oceanographical implications

Riemann-Z�rneck

1991

Hydrobiologia

View full text Add to dashboard Cite

The benthic deep-water siphonophore Rhodalia miranda was collected for the first time in 1876 by H.M.S. 'Challenger' off the Rio de la Plata estuary beneath the Subtropical Convergence at about 1000 m depth.Rhodalia was reported again about 100 years later from certain distant localities in the subantarctic region of the south-west Atlantic. Hydrographic and topographic features that may be involved in creating this peculiar distribution pattern are discussed together with a likely mode of dispersal of benthic coelenterates. The disjunct distribution of Rhodalia and other benthos of the upper Argentine Slope suggests the subsurface oceanographic rgime to be quite different from what we know of the surface layers.

show abstract

“…6°S) and Chiloé Island (42°S) and the Magellan or cold-temperate Province between Chiloé Island and Cape Horn (56°S) ( Fig. 1), which extends into Argentina to the Rio de la Plata (36-38°S) (Riemann-Zürneck, 1986;Zamponi et al, 1998a). Several authors have recognised a transitional area somewhere between 30 and 42°S where both faunas occur (e.g.…”

Section: Introductionmentioning

confidence: 98%

“…These conspicuous sessile marine invertebrates are present in almost all marine habitats; especially in higher latitudes they can be abundant or even dominating. These characteristics make them an excellent taxonomic group for long-term monitoring and detection of general zoogeographic patterns and trends (Riemann-Zürneck, 1986). Since the large vessel-based expeditions to the sea off Chile between 1850 and 1950 (Verrill, 1869;Hertwig, 1882;Carlgren, 1899Carlgren, (for 1898McMurrich, 1904;Carlgren, 1927;1959), the Chilean actinofauna, although quite abundant, has received very little attention.…”

Section: Introductionmentioning

confidence: 99%

Distribution patterns of Chilean shallow-water sea anemones (Cnidaria: Anthozoa: Actiniaria, Corallimorpharia); with a discussion of the taxonomic and zoogeographic relationships between the actinofauna of the South East Pacific, the South West Atlantic and the Antarctic

Häussermann¹,

Försterra²

2005

Sci. Mar.

View full text Add to dashboard Cite

The first complete zoogeographical analysis of Chilean shallow water sea anemones (Actiniaria and Corallimorpharia) and their taxonomic relations with neighbouring faunas is provided, based on extensive recent sampling in combination with a literature review. Between 1994 and 2004, we collected more than 1000 specimens of 32 distinct species of Actiniaria and Corallimorpharia at more than 100 sites along the Chilean coast between Arica (18°30'S; 70°19'W) and the Straits of Magellan (53°36'S 70°56'W). Sampling was done in the intertidal during low tides and in the subtidal by means of SCUBA diving down to depths of 40 m. The northern part of the Chilean fjord region showed the highest number of species (23). Our results contradict an abrupt general change in the marine faunal composition at 42°S, instead showing the continuation of species of the exposed coast and the joining of fjord species due to the availability of additional habitats in the richly structured fjord region south of 42°S, and also to eurybathy. The southern distribution limits of the species we found in northern and central Chile show only one significant concentration around the Peninsula Taitao (approx. 48°S). This either indicates a zoogeographic barrier for shallow water species at the Peninsula Taitao, or is a sampling artifact caused by poor data from the region between the Peninsula Taitao and the Straits of Magellan. According to the literature, 18 of the 63 described Chilean sea anemones (Pacific Ocean) can also be found in Argentina (Atlantic Ocean) and 13 in the Antarctic. However, many records and statuses of the common species of the South East Pacific and the South West Atlantic/Antarctic are uncertain or doubtful and need revision or confirmation.

show abstract

Zur Biogeographie des Südwestatlantik mit besonderer Berücksichtigung der Seeanemonen (Coelenterata: Actiniaria)

Abstract: On the biogeography of the southwest Atlantic with special reference to the sea anemones (Coelenterata: Actiniaria).

Cited by 28 publications

References 54 publications

Biodiversity of Chilean sea anemones (Cnidaria: Anthozoa): distribution patterns and zoogeographic implications, including new records for the fjord region

Biodiversity of Chilean sea anemones (Cnidaria: Anthozoa): distribution patterns and zoogeographic implications, including new records for the fjord region

The benthic deep-water siphonophore Rhodalia miranda and other coelenterates in the south-west Atlantic: ecological and oceanographical implications

Distribution patterns of Chilean shallow-water sea anemones (Cnidaria: Anthozoa: Actiniaria, Corallimorpharia); with a discussion of the taxonomic and zoogeographic relationships between the actinofauna of the South East Pacific, the South West Atlantic and the Antarctic

Contact Info

Product

Resources

About