Journal ArticleDOI
Sediment-induced reduction in the pumping rate of the tropical sponge Verongia lacunosa
T. Gerrodette,A. O. Flechsig +1 more
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Sponges exposed to seawater containing suspensions of clay maintained at a constant level for 4 h were more sensitive to sediment than some other suspension-feeding organisms, and such sensitivity may limit the distribution of V. lacunosa and other sponge species.Abstract:
The pumping rate of Verongia lacunosa (Lamarck), a tropical marine sponge, varied between 1 and 6 l h-1 in clear seawater for sponges with a volume of about 500 ml. Sponges were exposed to seawater containing suspensions of clay maintained at a constant level for 4 h; concentrations of 11 mg l-1 or greater significantly reduced the pumping rate, while concentrations of 3 mg l-1 did not. Other sponges were exposed to suspensions of clay for 4 days; a concentration of 95 mg l-1 caused a continuing decline in the pumping rate. These sponges were more sensitive to sediment than some other suspension-feeding organisms. Such sensitivity may limit the distribution of V. lacunosa and other sponge species.read more
Citations
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Journal ArticleDOI
The functional roles of marine sponges
TL;DR: Although the scientific evidence strongly supports the significance and widespread nature of these functional roles sponges still remain underappreciated in marine systems, the aim of this review is to examine recent developments in understanding of sponge functional roles in tropical, temperate and polar ecosystems.
Journal ArticleDOI
Complex nitrogen cycling in the sponge Geodia barretti
Friederike Hoffmann,Regina Radax,Dagmar Woebken,Moritz Holtappels,Gaute Lavik,Hans Tore Rapp,Marie-Lise Schläppy,Christa Schleper,Marcel M. M. Kuypers +8 more
TL;DR: This is the firstProof of anammox and denitrification in the same animal host, and the first proof of anaerobic ammonium oxidation and den itrification in sponges.
Journal ArticleDOI
Models for Fossil Concentrations: Paleobiologic Implications
TL;DR: In this article, four basic types of skeletal concentrations are modeled in terms of changes in sedimentation rate alone, and the model categorizes fossil concentrations on the relatively objective basis of their bed contacts, and uses this criterion to infer directional shifts in net sedimentation.
Journal ArticleDOI
Do associated microbial abundances impact marine demosponge pumping rates and tissue densities
TL;DR: Density and pumping rate differences suggest that evolutionary differences between HMA and LMA species may have resulted in profound morphological and physiological differences between the two groups.
Book ChapterDOI
Nutrient fluxes through sponges: biology, budgets, and ecological implications.
TL;DR: In this article, a review of the available knowledge on the magnitude of sponge-meditated nutrient fluxes and their ecological implications depends much on the compound type (i.e., C, N, P, or Si).
References
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Book
Standard methods for the examination of water and wastewater
TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.
Journal ArticleDOI
Particle feeding in natural populations of three marine demosponges
TL;DR: Analysis of ambient and exhalant water samples collected in situ indicates that the net POC diet of three tropical Demospongiae, Mycale sp.
Journal ArticleDOI
Water transport, respiration and energetics of three tropical marine sponges
TL;DR: The rates of water transport and respiration of three tropical marine demosponges Mycale sp.
Journal ArticleDOI
In situ pumping activities of tropical Demospongiae
TL;DR: Studies employing Scuba techniques were carried out on populations of 3 species of tropical demosponges to determine in situ patterns of water-pumping activity, finding that constant activity may be restricted to thin-walled species working at low pressures and velocities.