title: ANALYSIS OF SPATIAL AND TEMPORAL DIVERSITY AND DISTRIBUTION OF PORPHYRA (RHODOPHYTA) IN SOUTHEASTERN NEW ZEALAND SUPPORTED BY THE USE OF MOLECULAR TOOLS(1).
abstract: Molecular studies have shown that New Zealand's rocky shores are a habitat for >30 species of Porphyra, but little is known of their seasonal and zonal distribution. The spatial and temporal distribution of bladed Porphyra gametophytes at Brighton Beach, southeast New Zealand, were monitored for 32 months. Molecular markers were used for species identification, and a total of nine species was observed as being present during this time. Two species, P. cinnamomea and Porphyra sp. "ROS 54," were the most common, and both were present for most months, while the remaining seven species were present sporadically, for only a few weeks at a time. P. cinnamomea W. A. Nelson and Porphyra sp. "ROS 54" were most common in the midintertidal, and both showed a similar seasonality with the highest presence during spring. They also showed a similar trend of seasonal dieback resulting in at least 1 month (May) in two consecutive years when they were both absent. This is one of the few studies investigating spatial and temporal distribution within a genus and over a 3-year period. Our results show no distinct intertidal zonation patterns within the genus, and we conclude that morphologically similar species in a similar habitat rely on physiological mechanisms for survival.
authors.affiliation: Department of Botany, University of Otago, PO Box 56, Dunedin 9054, New ZealandAuckland Mail Centre, School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New ZealandDepartment of Botany, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
authors.forename: Katja
authors.initials: K
authors.lastname: Schweikert
authors.affiliation: Department of Botany, University of Otago, PO Box 56, Dunedin 9054, New ZealandAuckland Mail Centre, School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New ZealandDepartment of Botany, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
authors.forename: Judith E
authors.initials: JE
authors.lastname: Sutherland
authors.affiliation: Department of Botany, University of Otago, PO Box 56, Dunedin 9054, New ZealandAuckland Mail Centre, School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New ZealandDepartment of Botany, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
authors.forename: David J
authors.initials: DJ
authors.lastname: Burritt
authors.affiliation: Department of Botany, University of Otago, PO Box 56, Dunedin 9054, New ZealandAuckland Mail Centre, School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New ZealandDepartment of Botany, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
authors.forename: Catriona L
authors.initials: CL
authors.lastname: Hurd
keywords: New Zealand; Porphyra; Rhodophyta; genus; intertidal; molecular; seasonal; spatial; temporal; zonation