Intertidal and subtidal fouling assemblages in a Patagonian harbour (Argentina, Southwest Atlantic)
The composition of the early stages of intertidal and subtidal fouling assemblages in Comodoro Rivadavia harbour (Argentina, 45°52' S, 67°28' W) and the influence of shore level and season on their structure were analysed. At the beginning of each season, stones were glued to the substratu...
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2006
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v563_n1_p9_Rico http://hdl.handle.net/20.500.12110/paper_00188158_v563_n1_p9_Rico |
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paper:paper_00188158_v563_n1_p9_Rico2023-06-08T14:39:51Z Intertidal and subtidal fouling assemblages in a Patagonian harbour (Argentina, Southwest Atlantic) Argentina Comodoro Rivadavia harbour Fouling Non-indigenous marine species Patagonia Algae Microorganisms Ports and harbors Shore protection Argentina Comodoro Rivadavia harbour Non-indigenous marine species Patagonia Fouling abundance alga intertidal environment invertebrate sessile species species richness subtidal environment Argentina Patagonia South America Aberrantidae Balanidae Balanus glandula Bryozoa Chlorophyta Cryptosula pallasiana Fissurella Invertebrata Paralaeospira Phaeophyceae Polychaeta Thoracica Ulothrix flacca Urospora penicilliformis The composition of the early stages of intertidal and subtidal fouling assemblages in Comodoro Rivadavia harbour (Argentina, 45°52' S, 67°28' W) and the influence of shore level and season on their structure were analysed. At the beginning of each season, stones were glued to the substratum with epoxy putty and distributed along 4 vertical transects at intervals of 20 m, at 3 levels: upper intertidal, middle intertidal, and subtidal. Substrata remained in the field for 84-100 days. A total of 48 samples (4 seasons x 3 levels x 4 replicates) were analysed. Species richness increased with depth, with 6 taxa in the upper intertidal, 23 in the middle intertidal and 31 in the subtidal. Seasonal differences in richness were less distinct. Green, red and brown algae were the dominant groups. Invertebrates were mainly represented by filter-feeding, sessile organisms, such as cheilostome bryozoans, spirorbid polychaetes and acorn barnacles. The barnacle Balanus glandula and the bryozoan Cryptosula pallasiana were the only non-indigenous species found in this study. Highly significant differences in structure among shore levels and seasons were evidenced by a two-way ANOSIM test. The upper intertidal is characterized by the filamentous green algae Urospora penicilliformis and Ulothrix flacca. The barnacle Balanus glandula is the most abundant species in the middle intertidal. The subtidal is defined mainly by the presence of the spirorbid polychaetes Paralaeospira levinseni and Romanchella perrieri, and the keyhole limpet Fissurella radiosa. Ordination of samples by season was less clear than by shore level. © Springer 2006. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v563_n1_p9_Rico http://hdl.handle.net/20.500.12110/paper_00188158_v563_n1_p9_Rico |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentina Comodoro Rivadavia harbour Fouling Non-indigenous marine species Patagonia Algae Microorganisms Ports and harbors Shore protection Argentina Comodoro Rivadavia harbour Non-indigenous marine species Patagonia Fouling abundance alga intertidal environment invertebrate sessile species species richness subtidal environment Argentina Patagonia South America Aberrantidae Balanidae Balanus glandula Bryozoa Chlorophyta Cryptosula pallasiana Fissurella Invertebrata Paralaeospira Phaeophyceae Polychaeta Thoracica Ulothrix flacca Urospora penicilliformis |
| spellingShingle |
Argentina Comodoro Rivadavia harbour Fouling Non-indigenous marine species Patagonia Algae Microorganisms Ports and harbors Shore protection Argentina Comodoro Rivadavia harbour Non-indigenous marine species Patagonia Fouling abundance alga intertidal environment invertebrate sessile species species richness subtidal environment Argentina Patagonia South America Aberrantidae Balanidae Balanus glandula Bryozoa Chlorophyta Cryptosula pallasiana Fissurella Invertebrata Paralaeospira Phaeophyceae Polychaeta Thoracica Ulothrix flacca Urospora penicilliformis Intertidal and subtidal fouling assemblages in a Patagonian harbour (Argentina, Southwest Atlantic) |
| topic_facet |
Argentina Comodoro Rivadavia harbour Fouling Non-indigenous marine species Patagonia Algae Microorganisms Ports and harbors Shore protection Argentina Comodoro Rivadavia harbour Non-indigenous marine species Patagonia Fouling abundance alga intertidal environment invertebrate sessile species species richness subtidal environment Argentina Patagonia South America Aberrantidae Balanidae Balanus glandula Bryozoa Chlorophyta Cryptosula pallasiana Fissurella Invertebrata Paralaeospira Phaeophyceae Polychaeta Thoracica Ulothrix flacca Urospora penicilliformis |
| description |
The composition of the early stages of intertidal and subtidal fouling assemblages in Comodoro Rivadavia harbour (Argentina, 45°52' S, 67°28' W) and the influence of shore level and season on their structure were analysed. At the beginning of each season, stones were glued to the substratum with epoxy putty and distributed along 4 vertical transects at intervals of 20 m, at 3 levels: upper intertidal, middle intertidal, and subtidal. Substrata remained in the field for 84-100 days. A total of 48 samples (4 seasons x 3 levels x 4 replicates) were analysed. Species richness increased with depth, with 6 taxa in the upper intertidal, 23 in the middle intertidal and 31 in the subtidal. Seasonal differences in richness were less distinct. Green, red and brown algae were the dominant groups. Invertebrates were mainly represented by filter-feeding, sessile organisms, such as cheilostome bryozoans, spirorbid polychaetes and acorn barnacles. The barnacle Balanus glandula and the bryozoan Cryptosula pallasiana were the only non-indigenous species found in this study. Highly significant differences in structure among shore levels and seasons were evidenced by a two-way ANOSIM test. The upper intertidal is characterized by the filamentous green algae Urospora penicilliformis and Ulothrix flacca. The barnacle Balanus glandula is the most abundant species in the middle intertidal. The subtidal is defined mainly by the presence of the spirorbid polychaetes Paralaeospira levinseni and Romanchella perrieri, and the keyhole limpet Fissurella radiosa. Ordination of samples by season was less clear than by shore level. © Springer 2006. |
| title |
Intertidal and subtidal fouling assemblages in a Patagonian harbour (Argentina, Southwest Atlantic) |
| title_short |
Intertidal and subtidal fouling assemblages in a Patagonian harbour (Argentina, Southwest Atlantic) |
| title_full |
Intertidal and subtidal fouling assemblages in a Patagonian harbour (Argentina, Southwest Atlantic) |
| title_fullStr |
Intertidal and subtidal fouling assemblages in a Patagonian harbour (Argentina, Southwest Atlantic) |
| title_full_unstemmed |
Intertidal and subtidal fouling assemblages in a Patagonian harbour (Argentina, Southwest Atlantic) |
| title_sort |
intertidal and subtidal fouling assemblages in a patagonian harbour (argentina, southwest atlantic) |
| publishDate |
2006 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v563_n1_p9_Rico http://hdl.handle.net/20.500.12110/paper_00188158_v563_n1_p9_Rico |
| _version_ |
1768544535009296384 |