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Full-Text Articles in Life Sciences
Fishes Of The Northern Mid-Atlantic Ridge Collected During The Mar-Eco Cruise In June-July 2004: An Annotated Checklist, Filipe M. Porteiro, Tracey Sutton, Ingvar Byrkjedal, Alexy M. Orlov, Mikko Heino, Gui Menezes, Odd Aksel Bergstad
Fishes Of The Northern Mid-Atlantic Ridge Collected During The Mar-Eco Cruise In June-July 2004: An Annotated Checklist, Filipe M. Porteiro, Tracey Sutton, Ingvar Byrkjedal, Alexy M. Orlov, Mikko Heino, Gui Menezes, Odd Aksel Bergstad
Marine & Environmental Sciences Faculty Reports
Records of the fishes from the northern Mid-Atlantic Ridge (MAR) (41⁰N - 60⁰N) sampled during two research cruises conducted in summer 2004 on the R/V G.O. Sars and M/S Loran are presented. The cruises were major sampling efforts carried out for the MAR-ECO project, i.e. the Census of Marine Life field project entitled “Patterns and Processes of the Ecosystems of the Northern Mid-Atlantic”. The investigation included sampling with several midwater nets, bottom trawl and longlines from surface waters to about 4000 m. The list comprises around 300 species of fishes from 82 families. Many records were new to the northern …
Light And Vision In The Deep-Sea Benthos: I. Bioluminescence At 500-1000 M Depth In The Bahamian Islands, Sönke Johnsen, Tamara M. Frank, Steven H.D. Haddock, Edith A. Widder, Charles G. Messing
Light And Vision In The Deep-Sea Benthos: I. Bioluminescence At 500-1000 M Depth In The Bahamian Islands, Sönke Johnsen, Tamara M. Frank, Steven H.D. Haddock, Edith A. Widder, Charles G. Messing
Marine & Environmental Sciences Faculty Articles
Bioluminescence is common and well studied in mesopelagic species. However, the extent of bioluminescence in benthic sites of similar depths is far less studied, although the relatively large eyes of benthic fish, crustaceans and cephalopods at bathyal depths suggest the presence of significant biogenic light. Using the Johnson-Sea-Link submersible, we collected numerous species of cnidarians, echinoderms, crustaceans, cephalopods and sponges, as well as one annelid from three sites in the northern Bahamas (500–1000 m depth). Using mechanical and chemical stimulation, we tested the collected species for light emission, and photographed and measured the spectra of the emitted light. In addition, …
Light And Vision In The Deep-Sea Benthos: Ii. Vision In Deep-Sea Crustaceans, Tamara M. Frank, Sönke Johnsen, Thomas W. Cronin
Light And Vision In The Deep-Sea Benthos: Ii. Vision In Deep-Sea Crustaceans, Tamara M. Frank, Sönke Johnsen, Thomas W. Cronin
Marine & Environmental Sciences Faculty Articles
Using new collecting techniques with the Johnson-Sea-Link submersible, eight species of deep-sea benthic crustaceans were collected with intact visual systems. Their spectral sensitivities and temporal resolutions were determined shipboard using electroretinography. Useable spectral sensitivity data were obtained from seven species, and in the dark-adapted eyes, the spectral sensitivity peaks were in the blue region of the visible spectrum, ranging from 470 to 497 nm. Under blue chromatic adaptation, a secondary sensitivity peak in the UV portion of the spectrum appeared for two species of anomuran crabs:Eumunida picta (λmax 363 nm) and Gastroptychus spinifer (λmax 383 nm). Wavelength-specific …
Population Status Of Acropora Corals In The Florida Keys, Steven Miller, Mark Chiappone, Leanne M. Rutten, Dione W. Swanson
Population Status Of Acropora Corals In The Florida Keys, Steven Miller, Mark Chiappone, Leanne M. Rutten, Dione W. Swanson
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Population declines of staghorn coral (Acropora cervicornis) and elkhorn coral (A. palmata) are often-cited examples of Caribbean reef change since the 1970s, due, in part, to disease and localized effects from storms and predation. Both corals were listed as threatened on the U.S. Endangered Species List based upon range-wide decline and poor recovery. A spatially intensive survey undertaken in the Florida Keys of Acropora corals quantified habitat distribution, colony abundance, size, and condition at 235 sites spanning over 200 km in 2007. A two-stage stratified sampling design using belt transects incorporated cross-shelf habitats and no-fishing management …
Stony Coral Species Diversity And Cover In The Florida Keys Using Design-Based Sampling, Leanne M. Rutten, Mark Chiappone, Dione W. Swanson, Steven Miller
Stony Coral Species Diversity And Cover In The Florida Keys Using Design-Based Sampling, Leanne M. Rutten, Mark Chiappone, Dione W. Swanson, Steven Miller
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Large-scale sampling of stony coral species richness, species distribution, and cover was undertaken at 423 Florida Keys sites between Miami and SW of Key West during 2005 and 2007. A two-stage, stratified random sampling design employed belt transects to enumerate numbers of species and point-intercept surveys to quantify cover. The sampling design incorporated ten reef and hard-bottom habitats from < 1 m to 27 m depth, as well as oceanographic regions and areas inside and outside of protected management zones. These data provide insights into the spatial extent and factors influencing stony coral biodiversity. For stony corals, a pool of ~50 taxa encompassing the Orders Milleporina and Scleractinia, including species and morphotypes, was recorded. Significant differences were found in species richness and cover among cross-shelf habitats, with great values on inner shelf margin patch reefs, followed by deeper fore-reef slope habitats that extended to the 27 m depth limit sampled. In contrast, the shallow fore-reef, especially in areas historically dominated by the branching coral Acropora palmata, yielded relatively low numbers of species and cover that are presently dominated by smaller, brooding corals such as Porites astreoides and Favia fragum.