Cystoseira scale-based biometric relationships
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Sotiris Orfanidis
Sotiris Orfanidis is a Senior Researcher at the Fisheries Research Institute specializing in biodiversity of transitional and coastal water benthic macrophytes, as well as in their ecophysiological interactions with the abiotic stress, water quality, and climatic changes. His current research is focused on using benthic macrophytes as bioindicators (biotic indices) and on sustainable seaweed exploitation (food, feed, and biofuel). He has published more than 50 papers in refereed international journals/books. He was involved in several national or European projects and was (co)organizer of, or invited speaker in, symposia and workshops. He obtained scholarships and was a handling editor with two international journals.
,
Ljiljana Iveša
Ljiljana Iveša is a Research Associate at the Center for Marine Research in Rovinj, Ruđer Bošković Institute, Croatia. Her fields of research include taxonomy of macrophytobenthos (seaweeds and seagrasses), ecology of seaweeds with a special interest in ecology of canopy-forming species of the order Fucales and distribution patterns of non-indigenous species. Her current research is focused on the ecology of coastal habitats of the natural rocky shore and artificial hard surfaces and assessment of the ecological status of coastal waters using macroalgal assemblages.
Stefanos Gounaris is a Marine Scientist member of the Benthic Ecology and Technology Laboratory. He has worked on the use of
Cystoseira as a bioindicator of habitat quality and the development of monitoring protocols.Soultana Tsioli is a final year PhD Biologist at the National and Kapodistrian University of Athens, Greece. She has been a member of the Benthic Ecology and Technology Laboratory since 2009. Her research interests focus on ecophysiology of seagrasses, the impacts of global climate changes on seagrasses and systematics of seaweeds. The epiphytes of
Cymodocea across a eutrophication gradient have been studied during her diploma thesis.Massimo Devescovi is a Senior Research Associate at the Center for Marine Research in Rovinj, Ruđer Bošković Institute, Croatia. His fields of research include ecophysiology of marine crustaceans, distribution patterns of macrozoobenthos and macrophytobenthos on the rocky bottom including the rock-boring bivalve
Lithophaga lithophaga . Over the last years, his research has been focused on the effects of the anthropogenic impact on rocky bottom communities.Vasilis Papathanasiou is a Researcher at the Fisheries Research Institute, Nea Peramos, Greece. He has worked on the use of macrophytes as bioindicators of ecological quality and the development of monitoring protocols and programs. He has focused on the experimental study of stress factors and climate change scenarios on seagrasses and their distribution. He has worked on the mapping and monitoring of seagrasses on the Greek coasts using various techniques and on the effect of seagrass meadow quality on epiphytic and decapod assemblages.
Abstract
Scale-based biometric relationships of Cystoseira species were studied. All of the allometric relationships between size and biomass were significant (p<0.001) and volume [estimated as the product of length (L) and circumference-squared (C2)] was a better predictor of both wet biomass (WB) and dry biomass (DB) than L. The allometric exponent of the relationship between L and DB for five Cystoseira species (0.238–0.297) was found to be close to the allometric exponent suggested to be universal for primary producers (0.25). The relationship between Cystoseira spp. coverage (%; estimated in the laboratory for each species harvested within a reference quadrat in vertical projection) and WB was best expressed by a power function, while that between photographic cover (%; estimated in the field) and WB was asymptotic at 100% cover. The relationships between cover (%) (CVr) and coverage (%) (CVe) with WB pooled from an independent dataset were polynomial with comparable values up to 120 g WB. ANCOVA showed species-specific (e.g. between biomass and size) and species-independent (e.g. between biomass and coverage/cover, between DB and WB, and between DB and organic matter) relationships, indicating that non-destructive sampling in the genus is feasible when species and parameter are taken into account.
Article note:
This article is related to special issue Phycomorph: macroalgal development and morphogenesis, published in Botanica Marina 2017, vol. 60, issue 2.
About the authors
Sotiris Orfanidis is a Senior Researcher at the Fisheries Research Institute specializing in biodiversity of transitional and coastal water benthic macrophytes, as well as in their ecophysiological interactions with the abiotic stress, water quality, and climatic changes. His current research is focused on using benthic macrophytes as bioindicators (biotic indices) and on sustainable seaweed exploitation (food, feed, and biofuel). He has published more than 50 papers in refereed international journals/books. He was involved in several national or European projects and was (co)organizer of, or invited speaker in, symposia and workshops. He obtained scholarships and was a handling editor with two international journals.
Ljiljana Iveša is a Research Associate at the Center for Marine Research in Rovinj, Ruđer Bošković Institute, Croatia. Her fields of research include taxonomy of macrophytobenthos (seaweeds and seagrasses), ecology of seaweeds with a special interest in ecology of canopy-forming species of the order Fucales and distribution patterns of non-indigenous species. Her current research is focused on the ecology of coastal habitats of the natural rocky shore and artificial hard surfaces and assessment of the ecological status of coastal waters using macroalgal assemblages.
Stefanos Gounaris is a Marine Scientist member of the Benthic Ecology and Technology Laboratory. He has worked on the use of Cystoseira as a bioindicator of habitat quality and the development of monitoring protocols.
Soultana Tsioli is a final year PhD Biologist at the National and Kapodistrian University of Athens, Greece. She has been a member of the Benthic Ecology and Technology Laboratory since 2009. Her research interests focus on ecophysiology of seagrasses, the impacts of global climate changes on seagrasses and systematics of seaweeds. The epiphytes of Cymodocea across a eutrophication gradient have been studied during her diploma thesis.
Massimo Devescovi is a Senior Research Associate at the Center for Marine Research in Rovinj, Ruđer Bošković Institute, Croatia. His fields of research include ecophysiology of marine crustaceans, distribution patterns of macrozoobenthos and macrophytobenthos on the rocky bottom including the rock-boring bivalve Lithophaga lithophaga. Over the last years, his research has been focused on the effects of the anthropogenic impact on rocky bottom communities.
Vasilis Papathanasiou is a Researcher at the Fisheries Research Institute, Nea Peramos, Greece. He has worked on the use of macrophytes as bioindicators of ecological quality and the development of monitoring protocols and programs. He has focused on the experimental study of stress factors and climate change scenarios on seagrasses and their distribution. He has worked on the mapping and monitoring of seagrasses on the Greek coasts using various techniques and on the effect of seagrass meadow quality on epiphytic and decapod assemblages.
Acknowledgments
Sotiris Orfanidis expresses his thanks to Mrs. Konstantinia Nakou for her technical assistance in the laboratory. Thanks are due to Emeritus Professor Christos Katsaros and Dr. Annalisa Falace for their critical comments on an earlier draft of this text. We are very grateful to Prof. Matt Dring, Editor in Chief of Botanica Marina, for his time to review this paper. The authors would also like to acknowledge networking support by the COST Action “Phycomorph” FA1406.
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©2017 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- In this issue
- Physiology and ecology
- Seasonal variations of Fucus vesiculosus fertility under ocean acidification and warming in the western Baltic Sea
- Recruitment in Ulva blooms in relation to temperature, salinity and nutrients in a subtropical bay of the Gulf of California
- In situ biomass production of Gracilariaceae and Ulva rigida: the Venice Lagoon as a study case
- Cystoseira scale-based biometric relationships
- Harvesting Ascophyllum nodosum (Phaeophyceae) reduces the abundance of its host-specific epiphyte Vertebrata lanosa (Rhodophyta)
- Taxonomy/phylogeny and biogeography
- Two new epizoic Achnanthes species (Bacillariophyta) living on marine turtles from Costa Rica
- Genetic diversity and biogeography in Chaetomorpha melagonium (Ulvophyceae, Cladophorales) based on internal transcribed spacer (ITS rDNA) sequences
- Genomics
- Cloning and application of the complete nuclear ribosomal DNA (nrDNA) cistron sequence of Pyropia haitanensis (Bangiales, Rhodophyta)
- Chemistry and applications
- Seasonal variation and yield of sulfated polysaccharides in seaweeds from the Venice Lagoon
- Degradation of dimethyl phthalate esters by a filamentous fungus Aspergillus versicolor isolated from deep-sea sediments
Articles in the same Issue
- Frontmatter
- In this issue
- Physiology and ecology
- Seasonal variations of Fucus vesiculosus fertility under ocean acidification and warming in the western Baltic Sea
- Recruitment in Ulva blooms in relation to temperature, salinity and nutrients in a subtropical bay of the Gulf of California
- In situ biomass production of Gracilariaceae and Ulva rigida: the Venice Lagoon as a study case
- Cystoseira scale-based biometric relationships
- Harvesting Ascophyllum nodosum (Phaeophyceae) reduces the abundance of its host-specific epiphyte Vertebrata lanosa (Rhodophyta)
- Taxonomy/phylogeny and biogeography
- Two new epizoic Achnanthes species (Bacillariophyta) living on marine turtles from Costa Rica
- Genetic diversity and biogeography in Chaetomorpha melagonium (Ulvophyceae, Cladophorales) based on internal transcribed spacer (ITS rDNA) sequences
- Genomics
- Cloning and application of the complete nuclear ribosomal DNA (nrDNA) cistron sequence of Pyropia haitanensis (Bangiales, Rhodophyta)
- Chemistry and applications
- Seasonal variation and yield of sulfated polysaccharides in seaweeds from the Venice Lagoon
- Degradation of dimethyl phthalate esters by a filamentous fungus Aspergillus versicolor isolated from deep-sea sediments
