Selected Tools and Techniques for Physical and Biological Monitoring of Aquatic Dredged Material Disposal Sites

Fredette, Thomas J.; Nelson, David A.; Miller‐Way, Tina; Adair, Jeffery A; Sotler, Virginia A

doi:10.21236/ada229442

Cited by 8 publications

(15 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Several types of current sensors are in common use including impeller, electromagnetic, acoustic, acoustic Doppler, laser Doppler, and inclinometer types (Fredette et al 1990). Impeller current measurements are acquired by means of a propeller device which is rotated by current flow.…”

Section: Currentsmentioning

confidence: 99%

Geomorphic variability in the coastal zone / by Joann Mossa, Edward P. Meisburger, Andrew Morang.

Meisburger¹,

Morang²,

Mossa³

1992

View full text Add to dashboard Cite

Public reporting burden for this collection of information ts gatfiering and maintaining the data needed, and completmc colleaion of information, including suggestions for reducinc Davis Highway. Suite 120a. Arlington, VA 22202-4302. and t stimated to average l hour per response, including the lime for reviewing instructions, searching existing data s and reviewing the colleaion of information Send comments regarding this burden estimate or any other aspect of this this burden, to Washington Headquarters Services, Direaorate for Information Operations and Reports. 1215 Jefferson the Office of Management and Budget, Paperworlc Reduction Project (0704-0 1 88), Washington, DC 20503.

show abstract

Section: Currentsmentioning

confidence: 99%

Geomorphic variability in the coastal zone / by Joann Mossa, Edward P. Meisburger, Andrew Morang.

Meisburger¹,

Morang²,

Mossa³

1992

View full text Add to dashboard Cite

show abstract

“…If food is abundantly provided, this would even allow high rates of secondary production and the growth of resident organisms (Fredette et al, 1990). Investigations into vent crab nursery habitat relationships require the integration of habitat quality studies for a holistic view of these factors and their consequences for vent crab populations (Tunnicliffe & Jensen, 1987;Milius, 2006b).…”

mentioning

confidence: 99%

Novel nursery habitat of hydrothermal vent crabs

Hwang¹,

Dahms‬²,

Alekseev³

2008

Crustac

View full text Add to dashboard Cite

Breeding strategies of hydrothermal vent biota are of central interest for the "supply-side" ecology and evolution at vent sites. Researchers from the National Taiwan Ocean University have recently uncovered a new nursery habitat for the vent crab, Xenograpsus testudinatus (Decapoda, Brachyura) at a shallow hydrothermal vent site that extends from the deep-sea Okinawa Trench, off the northeastern coast of Taiwan (N.W. Pacific Ocean). Megalopa and early juvenile crab stages were found abundantly in a fissured habitat: sulfur aggregates around the chimneys of the vent system. The present underwater visual observations at hydrothermal vent systems at depths of around 20 metres indicate that sulfur rock aggregates are a primary nursery habitat for early benthic crab stages. They provide shelter from physical and biotic disturbance. This finding may explain why hydrothermal vents from the shallows to the deep sea provide suitable habitats for crabs to become astoundingly flourishing and dominant in all hydrothermal vent systems. ZUSAMMENFASSUNGFortpflanzungsstrategien der Biota von Hydrothermalquellen sind von zentralem Interesse für das Verständnis von Verbreitung und Evolution der Lebensformen an Hydrothermalquellen. Wissenschaftler von der "National Taiwan Ocean University" haben ein neues Refugium für larvale und juvenile Stadien des Kurzschwanzkrebses Xenograpsus testudinatus (Decapoda, Brachyura) an einer Hydrothermalquelle des Flachwassers entdeckt. Diese befindet sich an der Nordostküste Taiwans (N.W. Pazifischer Ozean) in Verlängerung des Okinawa Grabens. Megalopa Larven und juvenile Stadien dieses Krebses wurden in dichten Ansammlungen in einem reich texturierten Habitat entdeckt: in Schwefelaggregaten, die um die Schornsteine von Hydrothermalquellen herum angeordnet sind. Die hier gemachten Unterwasserbeobachtungen im Bereich von Hydrothermalquellen, in Tiefen von etwa 20 Metern, zeigen Schwefelaggregate als Refugien der frühen benthischen Stadien dieser Kurzschwanzkrebse. Dieses Habitat bietet Schutz vor physischen und biotischen Störungen. Diese Entdeckung mag zusätzlich erklären, warum Kurzschwanzkrebse an Hydrothermalquellen erstaunlich hohe Dichten aufweisen können.

show abstract

“…At a minimum, knowledge about the limitations of a technique will help determine the degree of confidence in the results. Basic concepts of sampling design and commonly used sampling devices and methodologies are discussed in Fredette et al (1990).…”

mentioning

confidence: 99%

“…Tool selection is based on a variety of technical factors discussed in Fredette et al (1990), as well as the intended purpose of monitoring.…”

mentioning

confidence: 99%

Dredging Operations Technical Support Program. Guidelines for Physical and Biological Monitoring of Aquatic Dredged Material Disposal Sites

Fredette¹,

Nelson²,

Clausner³

et al. 1990

Self Cite

View full text Add to dashboard Cite

Selected Tools and Techniques for Physical and Biological Monitoring of Aquatic Dredged Material Disposal Sites

Cited by 8 publications

References 17 publications

Geomorphic variability in the coastal zone / by Joann Mossa, Edward P. Meisburger, Andrew Morang.

Geomorphic variability in the coastal zone / by Joann Mossa, Edward P. Meisburger, Andrew Morang.

Novel nursery habitat of hydrothermal vent crabs

Dredging Operations Technical Support Program. Guidelines for Physical and Biological Monitoring of Aquatic Dredged Material Disposal Sites

Contact Info

Product

Resources

About