The role of macroalgae and the corallivorous fireworm Hermodice
... gradually aggravated coral tissue condition, Dictyota pinnatifida and Cladophora sp. induced severe tissue deterioration within a few days after direct contact. The exudation of potent allelochemicals and especially the species-specific and unequal excretion of primary metabolites such as dissolved ...
... gradually aggravated coral tissue condition, Dictyota pinnatifida and Cladophora sp. induced severe tissue deterioration within a few days after direct contact. The exudation of potent allelochemicals and especially the species-specific and unequal excretion of primary metabolites such as dissolved ...
Abalone - Department of Fisheries
... temperature and availability of food. Female greenlip abalone can produce up to two million eggs each once they reach four or five years old. Within two days, the fertilised abalone eggs develop into tiny larvae, called spat. The spat then drift with water currents for about a week, feeding and grow ...
... temperature and availability of food. Female greenlip abalone can produce up to two million eggs each once they reach four or five years old. Within two days, the fertilised abalone eggs develop into tiny larvae, called spat. The spat then drift with water currents for about a week, feeding and grow ...
Review: geological and experimental evidence for
... seawater has varied between 1.0 and 5.2 throughout the Phanerozoic Eon (Lowenstein et al., 2001, 2003, 2005; Horita et al., 2002; Brennan et al., 2004; Timofeeff et al., 2006). These secular variations in seawater Mg/Ca are thought to be responsible for systematic changes in the polymorph mineralogy ...
... seawater has varied between 1.0 and 5.2 throughout the Phanerozoic Eon (Lowenstein et al., 2001, 2003, 2005; Horita et al., 2002; Brennan et al., 2004; Timofeeff et al., 2006). These secular variations in seawater Mg/Ca are thought to be responsible for systematic changes in the polymorph mineralogy ...
Paralytic Shellfish Poisoning: The Alaska Problem
... deliver a lethal dose of 480 mg saxitoxin by consumption of only 2.5 grams of mussel tissue or a single small mussel. The extreme toxicity of blue mussels is due primarily to their relatively insensitivity to high toxin accumulations that enables them to continue feeding. Their high tolerance to sax ...
... deliver a lethal dose of 480 mg saxitoxin by consumption of only 2.5 grams of mussel tissue or a single small mussel. The extreme toxicity of blue mussels is due primarily to their relatively insensitivity to high toxin accumulations that enables them to continue feeding. Their high tolerance to sax ...
subtidal survey of the physical and biological features of esquimalt
... Esquimalt Lagoon is located immediately west of Esquimalt Harbour and encompasses 82 hectares of subtidal seabed. The outer boundary of the lagoon is a gravel and sand spit (Coburg Peninsula) formed by the alongshore transport of sediments from the southwest. The lagoon flows to the Strait of Juan d ...
... Esquimalt Lagoon is located immediately west of Esquimalt Harbour and encompasses 82 hectares of subtidal seabed. The outer boundary of the lagoon is a gravel and sand spit (Coburg Peninsula) formed by the alongshore transport of sediments from the southwest. The lagoon flows to the Strait of Juan d ...
Alaska SeaLife Center Guide to Marine Life
... This document, Alaska Sealife Center Guide to Marine Life, and all materials herein are the property of the Alaska SeaLife Center and the authors. The only exceptions are copyrighted images and other materials owned by others, which are indicated in the Photographic Contributions section. This Docum ...
... This document, Alaska Sealife Center Guide to Marine Life, and all materials herein are the property of the Alaska SeaLife Center and the authors. The only exceptions are copyrighted images and other materials owned by others, which are indicated in the Photographic Contributions section. This Docum ...
The Distribution, Abundance and Ecology of
... factors that control their abundances and phagotrophic activity in aquatic environments are poorly understood. The vertical distribution and abundance of mixotrophic nanoplankton was therefore documented in a variety of aquatic environments including the oligotrophic open ocean (Sargasso Sea), nine ...
... factors that control their abundances and phagotrophic activity in aquatic environments are poorly understood. The vertical distribution and abundance of mixotrophic nanoplankton was therefore documented in a variety of aquatic environments including the oligotrophic open ocean (Sargasso Sea), nine ...
Fucus at open and complex coastlines in the Baltic Sea
... for succession (Sousa 1979). Water motion may further be an effective vector for propagule dispersal (Reed et al. 1988). There are many examples of wave effects on macroalgal communities. Storms may form gaps in macroalgal canopies causing patches of secondary succession (Lubchenco & Menge 1978), or ...
... for succession (Sousa 1979). Water motion may further be an effective vector for propagule dispersal (Reed et al. 1988). There are many examples of wave effects on macroalgal communities. Storms may form gaps in macroalgal canopies causing patches of secondary succession (Lubchenco & Menge 1978), or ...
review—coral reefs - Ecosystem
... Key index words: algae; calcification; community structure; coral reef; primary production; zooxanthellae With a million species or more (Reaka-Kudla 1996), and specific and phyletic biodiversities greater than that of any of earth’s other biomes (more than 80% being animal or protozoan), coral reef ...
... Key index words: algae; calcification; community structure; coral reef; primary production; zooxanthellae With a million species or more (Reaka-Kudla 1996), and specific and phyletic biodiversities greater than that of any of earth’s other biomes (more than 80% being animal or protozoan), coral reef ...
A review of community ecology of mesophotic coral reef ecosystems
... the Bahamas, Reed and Pomponi (1997) described the biodiversity and distribution of sponges with depth. The deep fore-reef escarpment (60–150 m) exhibited the highest species diversity and was characterized by massive species in several orders in the class Demospongiae. While a number of sponge taxa ...
... the Bahamas, Reed and Pomponi (1997) described the biodiversity and distribution of sponges with depth. The deep fore-reef escarpment (60–150 m) exhibited the highest species diversity and was characterized by massive species in several orders in the class Demospongiae. While a number of sponge taxa ...
Habitats in Danger
... algae, for example, can harbour distinct communities, habitats, associations and characteristic facies. Nevertheless, following the initiatives of other international agreements and conventions, such as the OsloParis Convention for the protection of the North East Atlantic, the Barcelona Convention ...
... algae, for example, can harbour distinct communities, habitats, associations and characteristic facies. Nevertheless, following the initiatives of other international agreements and conventions, such as the OsloParis Convention for the protection of the North East Atlantic, the Barcelona Convention ...
The comparative estimation of phytoplanktonic, microphytobenthic
... If one considers that each of the three types of primary producers included in the title has already lead to an immense (in the case of plankton) or fairly large (benthos) amount of literature consisting of papers, reviews, books and meeting reports,’ then a paper dealing with the three types all to ...
... If one considers that each of the three types of primary producers included in the title has already lead to an immense (in the case of plankton) or fairly large (benthos) amount of literature consisting of papers, reviews, books and meeting reports,’ then a paper dealing with the three types all to ...
Full text in pdf format
... availability. Around Marion Island, where M. laevis is found only within the 20 m isobath, the offshore limit of the kelp beds is controlled by availability of suitable rock substrata. The inshore limit appears to be set by the maximum height of storm-induced waves. Four species of Macrocystis are g ...
... availability. Around Marion Island, where M. laevis is found only within the 20 m isobath, the offshore limit of the kelp beds is controlled by availability of suitable rock substrata. The inshore limit appears to be set by the maximum height of storm-induced waves. Four species of Macrocystis are g ...
Characterizing the deep insular shelf coral reef habitat of the Hind
... MCD, as depicted by the AUV transects, follows the description of Olsen and LaPlace (1978) who described the red hind spawning site with the bottom topography as a series of coral ridges, parallel to the 100 fathom (182 m) curve. These ridges were usually 100 m across and separated by calcareous san ...
... MCD, as depicted by the AUV transects, follows the description of Olsen and LaPlace (1978) who described the red hind spawning site with the bottom topography as a series of coral ridges, parallel to the 100 fathom (182 m) curve. These ridges were usually 100 m across and separated by calcareous san ...
It's a Breve new world for nitrogen research at VIMS
... by focusing on one of their key ingredients—the dissolved nitrogen that algae require for rampant growth. Algal blooms are formed by aggregations of tiny marine plants that require nitrogen and other nutrients. Many scientists attribute the recent escalation in harmful algal blooms at least in part ...
... by focusing on one of their key ingredients—the dissolved nitrogen that algae require for rampant growth. Algal blooms are formed by aggregations of tiny marine plants that require nitrogen and other nutrients. Many scientists attribute the recent escalation in harmful algal blooms at least in part ...
Summary and Conclusion
... observed inside the Rhizosolenia cells. Zooplankton biomass was very low in the area where Rhizosolenia mat was observed and was represented by few salps and large copepods. Reduction in zooplankton standing crop could be due to the unpalatability of Rhizosolenia and possibly the presence of ectocri ...
... observed inside the Rhizosolenia cells. Zooplankton biomass was very low in the area where Rhizosolenia mat was observed and was represented by few salps and large copepods. Reduction in zooplankton standing crop could be due to the unpalatability of Rhizosolenia and possibly the presence of ectocri ...
Essential Standard Marine Biology
... M.B.5.1 Analyze the interdependence of living organisms within their environment. Clarifying Objectives M.B.5.1.1 Understanding the ecological zones of the benthic region M.B.5.1.2 Explain the different aspects of ecology in relation to marine food webs, nutrient cycles and ecosystems M.B.5.1.3 Expl ...
... M.B.5.1 Analyze the interdependence of living organisms within their environment. Clarifying Objectives M.B.5.1.1 Understanding the ecological zones of the benthic region M.B.5.1.2 Explain the different aspects of ecology in relation to marine food webs, nutrient cycles and ecosystems M.B.5.1.3 Expl ...
biogeographic atlas of the southern ocean - ePIC
... 3. Composition and depth distribution of seaweed communities The most diverse macroalgal communities with the highest biomass occur in the shallow subtidal zone along the northern and central areas of the western Antarctic Peninsula (Wiencke & Amsler 2012). Numerous authors have reported on the cove ...
... 3. Composition and depth distribution of seaweed communities The most diverse macroalgal communities with the highest biomass occur in the shallow subtidal zone along the northern and central areas of the western Antarctic Peninsula (Wiencke & Amsler 2012). Numerous authors have reported on the cove ...
HELCOM Red List AA.E1C4
... sensitive to exposure. Due to the deeper distribution in the Baltic Sea they are known to occur at exposed (Kattegat) and moderately exposed sites (Bay of Mecklenburg) in terms of wave action. Kelp beds form an important biotope for other algae, including the green algae Chaetomorpha melagonium, the ...
... sensitive to exposure. Due to the deeper distribution in the Baltic Sea they are known to occur at exposed (Kattegat) and moderately exposed sites (Bay of Mecklenburg) in terms of wave action. Kelp beds form an important biotope for other algae, including the green algae Chaetomorpha melagonium, the ...
Rhodoliths and Rhodolith Beds
... New descriptions and studies of rhodolith beds (e.g., Harvey et al., 2005; Konar et al., 2006) and collections and species analyses of the rhodoliths found are helping to refine our understanding of growth forms, species, and species distributions. Rhodolith beds are distributed worldwide but a thor ...
... New descriptions and studies of rhodolith beds (e.g., Harvey et al., 2005; Konar et al., 2006) and collections and species analyses of the rhodoliths found are helping to refine our understanding of growth forms, species, and species distributions. Rhodolith beds are distributed worldwide but a thor ...
Chapter 13: Biological productivity and energy transfer
... ○ Photosynthetic organisms fix carbon and energy ...
... ○ Photosynthetic organisms fix carbon and energy ...
The Effects of Three Species of Macroalgae on Acropora Aspera
... in many cases with an increase in algal biomass. Macroalgal blooms are common in nutrient enriched waters, and can often outcompete coral. This experiment considered the effects of three species of macroalgae on the physiology of the branching coral Acropora aspera on a reef flat in the southern Gre ...
... in many cases with an increase in algal biomass. Macroalgal blooms are common in nutrient enriched waters, and can often outcompete coral. This experiment considered the effects of three species of macroalgae on the physiology of the branching coral Acropora aspera on a reef flat in the southern Gre ...
PICES XV S9-2846 Poster The role of temperature, salinity, light
... in Manila Bay, Philippines, and since 2003 occasionally covering almost the whole area. A field survey was conducted in March 2004, when N. scintillans formed red tides in the whole bay with surface chlorophyll-a reaching up to 522 µg L-1. This predominance was not explained by growth activity or ph ...
... in Manila Bay, Philippines, and since 2003 occasionally covering almost the whole area. A field survey was conducted in March 2004, when N. scintillans formed red tides in the whole bay with surface chlorophyll-a reaching up to 522 µg L-1. This predominance was not explained by growth activity or ph ...
Maunalua Bay Conservation Action Plan
... wave-cut valleys of the Ko`olau Mountain range, home to the endangered O`ahu `Elepaio, an endangered flycatcher bird. The area is also home to at least two endangered Hawaiian waterbirds. The resources of Maunalua Bay are important both biologically and socially. The Bay at one time was extremely pr ...
... wave-cut valleys of the Ko`olau Mountain range, home to the endangered O`ahu `Elepaio, an endangered flycatcher bird. The area is also home to at least two endangered Hawaiian waterbirds. The resources of Maunalua Bay are important both biologically and socially. The Bay at one time was extremely pr ...
Brown algae
The Phaeophyceae or brown algae (singular: alga), is a large group of mostly marine multicellular algae, including many seaweeds of colder Northern Hemisphere waters. They play an important role in marine environments, both as food and for the habitats they form. For instance Macrocystis, a kelp of the order Laminariales, may reach 60 m in length, and forms prominent underwater forests. Another example is Sargassum, which creates unique habitats in the tropical waters of the Sargasso Sea. Many brown algae, such as members of the order Fucales, commonly grow along rocky seashores. Some members of the class, such as kelp, are used as food for humans.Worldwide there are about 1500–2000 species of brown algae. Some species are of sufficient commercial importance, such as Ascophyllum nodosum, that they have become subjects of extensive research in their own right.Brown algae belong to a very large group, the Heterokontophyta, a eukaryotic group of organisms distinguished most prominently by having chloroplasts surrounded by four membranes, suggesting an origin from a symbiotic relationship between a basal eukaryote and another eukaryotic organism. Most brown algae contain the pigment fucoxanthin, which is responsible for the distinctive greenish-brown color that gives them their name. Brown algae are unique among heterokonts in developing into multicellular forms with differentiated tissues, but they reproduce by means of flagellated spores and gametes that closely resemble cells of other heterokonts. Genetic studies show their closest relatives to be the yellow-green algae.