The University of Southampton
University of Southampton Institutional Repository

A comparison of megafaunal communities in five submarine canyons off Southern California, USA

A comparison of megafaunal communities in five submarine canyons off Southern California, USA
A comparison of megafaunal communities in five submarine canyons off Southern California, USA
Remotely operated vehicle surveys were conducted in five submarine canyons off Southern California during research expeditions in 2005 and 2010. Video transects from a range of depths were analysed to produce presence/absence data of megafauna for each site. A comparison of benthic communities at various depths, locales, and canyons was performed. No significant difference was found between canyon communities based on the level of sediment transport activity, however this may be due to the unbalanced sampling of this opportunistic study. There was significant variation in biological community composition and abundance amongst water depths. These depth-related trends are in agreement with the findings of the previous studies and are likely tied to depth-correlated variables such as hydrostatic pressure, temperature, salinity, and oxygen concentration. Species richness was found to initially increase with depth before declining rapidly at the mouths of the studied canyons. Low oxygen levels in the Santa Monica Basin, into which four of the surveyed canyons empty, may explain this.
Community composition, Deep sea, Hueneme, La Jolla, Mugu, Redondo, ROVs, Santa Monica, Southern California, Submarine canyons
0967-0645
259-266
Duffy, Grant A.
e040b78b-5516-46b3-899a-4a275d91f134
Lundsten, Lonny
3a8f66ea-3355-4b51-b284-ac389543b7ca
Kuhnz, Linda A.
befd3e56-3c8f-442b-9080-bb9de02fc9df
Paull, Charles K.
be22c67a-494d-487c-9e5e-a2d16d7a4050
Duffy, Grant A.
e040b78b-5516-46b3-899a-4a275d91f134
Lundsten, Lonny
3a8f66ea-3355-4b51-b284-ac389543b7ca
Kuhnz, Linda A.
befd3e56-3c8f-442b-9080-bb9de02fc9df
Paull, Charles K.
be22c67a-494d-487c-9e5e-a2d16d7a4050

Duffy, Grant A., Lundsten, Lonny, Kuhnz, Linda A. and Paull, Charles K. (2014) A comparison of megafaunal communities in five submarine canyons off Southern California, USA. Deep Sea Research Part II: Topical Studies in Oceanography, 104, 259-266. (doi:10.1016/j.dsr2.2013.06.002).

Record type: Article

Abstract

Remotely operated vehicle surveys were conducted in five submarine canyons off Southern California during research expeditions in 2005 and 2010. Video transects from a range of depths were analysed to produce presence/absence data of megafauna for each site. A comparison of benthic communities at various depths, locales, and canyons was performed. No significant difference was found between canyon communities based on the level of sediment transport activity, however this may be due to the unbalanced sampling of this opportunistic study. There was significant variation in biological community composition and abundance amongst water depths. These depth-related trends are in agreement with the findings of the previous studies and are likely tied to depth-correlated variables such as hydrostatic pressure, temperature, salinity, and oxygen concentration. Species richness was found to initially increase with depth before declining rapidly at the mouths of the studied canyons. Low oxygen levels in the Santa Monica Basin, into which four of the surveyed canyons empty, may explain this.

Full text not available from this repository.

More information

Published date: June 2014
Keywords: Community composition, Deep sea, Hueneme, La Jolla, Mugu, Redondo, ROVs, Santa Monica, Southern California, Submarine canyons
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 367638
URI: http://eprints.soton.ac.uk/id/eprint/367638
ISSN: 0967-0645
PURE UUID: 6e24c790-cc37-4aae-babd-1fc88aa1fc47

Catalogue record

Date deposited: 04 Aug 2014 10:32
Last modified: 15 Jul 2019 21:49

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×