Open Access. Powered by Scholars. Published by Universities.®
- File Type
Articles 1 - 5 of 5
Full-Text Articles in Entire DC Network
Frontline Experiences From Changing Fisheries Bycatch Paradigms, David Kerstetter
Frontline Experiences From Changing Fisheries Bycatch Paradigms, David Kerstetter
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
No abstract provided.
Vertical Ecology Of The Pelagic Ocean: Quantified Patterns And New Perspectives, Tracey Sutton
Vertical Ecology Of The Pelagic Ocean: Quantified Patterns And New Perspectives, Tracey Sutton
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Applications of acoustic and optical sensing and intensive, discrete-depth sampling, in concert with collaborative international research programs, have substantially advanced our knowledge of pelagic ecosystems in the 17 years since the last Deep-water Fishes FSBI Symposium. Although the epipelagic habitat is the best-known, and remote sensing and high-resolution modeling allow near-synoptic investigation of upper layer biophysical dynamics, ecological studies within the mesopelagic and deep-demersal habitats have begun to link lower and upper trophic level processes. Bathypelagic taxonomic inventories are far from complete but recent projects (MAR-ECO and CMarZ, supported by the Census of Marine Life program) have quantitatively strengthened distribution …
Length Structure Of Deep-Pelagic Fishes Sheds New Light To Their Life Histories, M. Heino, David S. Boukal, Tone Falkenhaug, Uwe Piatkowski, F. M. Porteiro, Tracey Sutton
Length Structure Of Deep-Pelagic Fishes Sheds New Light To Their Life Histories, M. Heino, David S. Boukal, Tone Falkenhaug, Uwe Piatkowski, F. M. Porteiro, Tracey Sutton
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Here we use a new technique to study life history variation in deep-pelagic fishes from a mid-ocean ridge system. Shape of length distribution in a population is to a significant extent determined by the degree to which an average individual approaches its asymptotic maximum size. Analysing the material from the pelagic trawl hauls taken during the 2004 Mar-Eco expedition along the northern Mid-Atlantic Ridge, we show that length distributions in many deep-pelagic fish species are characterised by negative skew (the left tail of the distribution is longer). In other words, a large proportion of individuals had a size close to …
Who's Eating Whom? Identification And Quantification Of Deep-Pelagic Prey Fishes In The North Atlantic Ocean, A. Heger, Tracey Sutton
Who's Eating Whom? Identification And Quantification Of Deep-Pelagic Prey Fishes In The North Atlantic Ocean, A. Heger, Tracey Sutton
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Understanding the structure and functioning of marine ecosystems requires accurate knowledge of trophic interactions. Trophic ecology studies generally underestimate prey diversity due to the difficulties imposed by digestion. Further, this degradation leads to uncertainty in the quantification of prey biomass (i.e., energy flow between various ecosystem components). Trophic interactions in the deep sea are poorly known relative to coastal ecosystems due to an incomplete inventory of meso-and bathypelagic species composition. The CoML field project MAR-ECO has increased our knowledge of the faunal structure of the mid-North Atlantic. Deep-pelagic fish specimens from the 2004 MARECO expedition provided a basis for an …
Trophic Diversity Of A Mesopelagic Fish Community., Tracey Sutton, Thomas L. Hopkins, Thomas M. Lancraft
Trophic Diversity Of A Mesopelagic Fish Community., Tracey Sutton, Thomas L. Hopkins, Thomas M. Lancraft
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
To understand the character of prey partitioning in a low latitude oligotrophic region, a composite picture of the trophic structure of a mesopelagic fish community was made from the eastern Gulf of Mexico. Two hundred and twenty three species were collected in the area of which I61 species were abundant enough for analyses. Fifteen major categories of prey biomass are identified for diet analyses: viz. copepods, ostracods, amphipods, euphausiids, decapods, larvaceans, salps, coelenterates (primarily siphonophores), unidentified gelatinous prey, polychaetes, gastropods, cephalopods, chaetognaths, fish, other food. Prey partitioning is minimal across major prey categories as the vast majority of mesopelagic fishes …