Effects of fish-farm biodeposition on periphyton assemblages on artificial substrates in the southern Tyrrhenian Sea (Gulf of Castellammare, Sicily)

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Abstract

An algal assemblage growing on artificial substrata of fish-farm cages was investigated. Specifically, algal response to the effects of fish-farm facilities was studied, in order to identify a possible future descriptor of biodeposition impact. Some sites were positioned upstream of the farms (at least 750 m; ‘controls’) and other sites were positioned downstream of the farms (‘impacts’). All sites were situated in the Tyrrhenian Sea. Control and impact sites differed significantly with regard to the dissolved nutrient profile. The fouling community (samples were scraped from buoys) displayed a reduction gradient in diversity which increased with the effect of fish farms. A total of 51 taxa were identified (three Cyanophyceae, three Phaeophyceae, five Bacillariophyceae, three Chlorophyceae, six Ulvophyceae and 31 Rhodophyceae), with a dominance of opportunistic species (with r strategy). A general increase in values of the Rhodophyceae by Phaeophyceae ratio (R/P) were recorded, indicating a remarkable impact of nutrient enrichment from fish culture facilities on an algal community structure.
Lingua originaleEnglish
pagine (da-a)575-581
Numero di pagine7
RivistaAquatic Ecology
Volume42
Stato di pubblicazionePublished - 2008

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Tyrrhenian Sea
artificial substrate
periphyton
fish farms
Sicily
Phaeophyceae
farm
Rhodophyta
fish
farms
Chlorophyceae
Bacillariophyceae
fouling
fish culture
eutrophication
cages
community structure
algal community
nutrient enrichment
nutrients

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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title = "Effects of fish-farm biodeposition on periphyton assemblages on artificial substrates in the southern Tyrrhenian Sea (Gulf of Castellammare, Sicily)",
abstract = "An algal assemblage growing on artificial substrata of fish-farm cages was investigated. Specifically, algal response to the effects of fish-farm facilities was studied, in order to identify a possible future descriptor of biodeposition impact. Some sites were positioned upstream of the farms (at least 750 m; ‘controls’) and other sites were positioned downstream of the farms (‘impacts’). All sites were situated in the Tyrrhenian Sea. Control and impact sites differed significantly with regard to the dissolved nutrient profile. The fouling community (samples were scraped from buoys) displayed a reduction gradient in diversity which increased with the effect of fish farms. A total of 51 taxa were identified (three Cyanophyceae, three Phaeophyceae, five Bacillariophyceae, three Chlorophyceae, six Ulvophyceae and 31 Rhodophyceae), with a dominance of opportunistic species (with r strategy). A general increase in values of the Rhodophyceae by Phaeophyceae ratio (R/P) were recorded, indicating a remarkable impact of nutrient enrichment from fish culture facilities on an algal community structure.",
author = "Mannino, {Anna Maria} and Gianluca Sara'",
year = "2008",
language = "English",
volume = "42",
pages = "575--581",
journal = "Netherlands Journal of Aquatic Ecology",
issn = "1380-8427",
publisher = "Springer Netherlands",

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TY - JOUR

T1 - Effects of fish-farm biodeposition on periphyton assemblages on artificial substrates in the southern Tyrrhenian Sea (Gulf of Castellammare, Sicily)

AU - Mannino, Anna Maria

AU - Sara', Gianluca

PY - 2008

Y1 - 2008

N2 - An algal assemblage growing on artificial substrata of fish-farm cages was investigated. Specifically, algal response to the effects of fish-farm facilities was studied, in order to identify a possible future descriptor of biodeposition impact. Some sites were positioned upstream of the farms (at least 750 m; ‘controls’) and other sites were positioned downstream of the farms (‘impacts’). All sites were situated in the Tyrrhenian Sea. Control and impact sites differed significantly with regard to the dissolved nutrient profile. The fouling community (samples were scraped from buoys) displayed a reduction gradient in diversity which increased with the effect of fish farms. A total of 51 taxa were identified (three Cyanophyceae, three Phaeophyceae, five Bacillariophyceae, three Chlorophyceae, six Ulvophyceae and 31 Rhodophyceae), with a dominance of opportunistic species (with r strategy). A general increase in values of the Rhodophyceae by Phaeophyceae ratio (R/P) were recorded, indicating a remarkable impact of nutrient enrichment from fish culture facilities on an algal community structure.

AB - An algal assemblage growing on artificial substrata of fish-farm cages was investigated. Specifically, algal response to the effects of fish-farm facilities was studied, in order to identify a possible future descriptor of biodeposition impact. Some sites were positioned upstream of the farms (at least 750 m; ‘controls’) and other sites were positioned downstream of the farms (‘impacts’). All sites were situated in the Tyrrhenian Sea. Control and impact sites differed significantly with regard to the dissolved nutrient profile. The fouling community (samples were scraped from buoys) displayed a reduction gradient in diversity which increased with the effect of fish farms. A total of 51 taxa were identified (three Cyanophyceae, three Phaeophyceae, five Bacillariophyceae, three Chlorophyceae, six Ulvophyceae and 31 Rhodophyceae), with a dominance of opportunistic species (with r strategy). A general increase in values of the Rhodophyceae by Phaeophyceae ratio (R/P) were recorded, indicating a remarkable impact of nutrient enrichment from fish culture facilities on an algal community structure.

UR - http://hdl.handle.net/10447/32096

M3 - Article

VL - 42

SP - 575

EP - 581

JO - Netherlands Journal of Aquatic Ecology

JF - Netherlands Journal of Aquatic Ecology

SN - 1380-8427

ER -