eCite Digital Repository

Broad-scale impacts of salmon farms on temperate macroalgal assemblages on rocky reefs

Citation

Oh, ES and Edgar, GJ and Kirkpatrick, JB and Stuart-Smith, RD and Barrett, NS, Broad-scale impacts of salmon farms on temperate macroalgal assemblages on rocky reefs, Marine Pollution Bulletin, 98, (1-2) pp. 201-209. ISSN 0025-326X (2015) [Refereed Article]

Copyright Statement

Copyright 2015 Elsevier Ltd. All rights reserved.

DOI: doi:10.1016/j.marpolbul.2015.06.049

Abstract

Intensive fish culture in open sea pens delivers large amounts of nutrients to coastal environments. Relative to particulate waste impacts, the ecological impacts of dissolved wastes are poorly known despite their potential to substantially affect nutrient-assimilating components of surrounding ecosystems. Broad-scale enrichment effects of salmonid farms on Tasmanian reef communities were assessed by comparing macroalgal cover at four fixed distances from active fish farm leases across 44 sites. Macroalgal assemblages differed significantly between sites immediately adjacent (100 m) to fish farms and reference sites at 5 km distance, while sites at 400 m and 1 km exhibited intermediate characteristics. Epiphyte cover varied consistently with fish farm impacts in both sheltered and exposed locations. The green algae Chaetomorpha spp. predominated near fish farms at swell-exposed sites, whereas filamentous green algae showed elevated densities near sheltered farms. Cover of canopy-forming perennial algae appeared unaffected by fish farm impacts.

Item Details

Item Type:Refereed Article
Keywords:aquaculture, fishes, benthic macrofauna, invertebrates, organic pollution Tasmania
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Marine Environments
Author:Oh, ES (Miss Lizzi Oh)
Author:Edgar, GJ (Professor Graham Edgar)
Author:Kirkpatrick, JB (Professor James Kirkpatrick)
Author:Stuart-Smith, RD (Dr Rick Stuart-Smith)
Author:Barrett, NS (Associate Professor Neville Barrett)
ID Code:102436
Year Published:2015
Web of Science® Times Cited:9
Deposited By:IMAS Research and Education Centre
Deposited On:2015-08-20
Last Modified:2018-03-18
Downloads:0

Repository Staff Only: item control page