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  • 1
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    Succession and seasonal variation in the development of subtidal macrobenthic soft-bottom communities off northern Chile (2010)
    Elsevier
    Details
    Publication Date: 2010-10-01
    Print ISSN: 1385-1101
    Electronic ISSN: 1873-1414
    Topics: Biology , Geosciences , Physics
    Published by Elsevier
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    PAPER CURRENT
  • 2
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    Donax pulchellus and Donax rugosus on Sandy Beaches, Ghana (2014)
    LAP Lambert Academic Publishing
    In:  EPIC3Saarbrücken, LAP Lambert Academic Publishing, 148 p., ISBN: 978-3-659-54304-3
    Details
    Publication Date: 2016-11-24
    Description: Donax species dominate the intertidal zone of coastal upwelling sandy beaches worldwide. The population dynamics of West African D. pulchellus and D. rugosus is still unknown. The population dynamics and ecology of surf clam Donax species, D. pulchellus and D. rugosus (Bivalvia: Donacidae), inhabiting two exposed sandy beaches of Ghana, were studied over 12 months period (August 2006 to July 2007). A total of 7,225 individuals of D. pulchellus, La beach and 2,452 individuals of D. rugosus, Chorko beach, were sampled. Two-way analysis of variance revealed a significant difference in the spatial and temporal distribution of the two species (p 〈 0.05). D. pulchellus attains first maturity at a mean length of 7.16 + 1.89 mm, and a maximum size of 11 mm while D. rugosus attains first maturity at a mean length of 20.94 + 6.98 mm, and a maximum size of 33.5 mm. Environmental factors namely, salinity, nitrate, and grain size modulate the growth in shell length of the two species. This book, provide new insight of Donax species as sedentary bivalves of sandy beach ecosystems. The book is useful for marine biologist, benthic ecologist, environmentalist, and chemical ecologist.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Book , peerRev
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  • 3
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    In situ short-term growth rates of a cold-water coral (2013)
    CSIRO PUBLISHING
    In:  EPIC3Marine and Freshwater Research, CSIRO PUBLISHING, 64, pp. 631-641, ISSN: 1323-1650
    Details
    Publication Date: 2019-07-17
    Description: Cold-water corals are known to grow much slower than their tropical counterparts. However, this assumption is mainly based on laboratory measurements exposing specimens to conditions that differ from their natural environments. The cosmopolitan scleractinian Desmophyllum dianthus forms dense banks below 18min northern Patagonia, Chile. So as to measure in situ growth rates of this cold-water coral, specimens were collected from two sites, weighed and deployed on holders in their natural headlong orientation at the respective collecting site. Corals exhibited a calcium carbonate (CaCO3) mass increase of 5.44+/-3.45 (mg (cm2 projected calyx area)^-1 day^-1) after 2 weeks, equivalent to a mass gain of 0.25+/-0.18 s.d. % day^-1. In comparison, D. dianthus specimens from the same collection sites maintained in an on-site flow-through aquarium system showed lower growth rates that were third of the in situ rates. In situ CaCO3 precipitation of D. dianthus extrapolated for 1 year (kg m^2 year^-1) displays the same order of magnitude as reported for massive growing tropical scleractinians, e.g. Porites sp.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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