scholarly journals Terrigenous deposits in coastal marine habitats: influences on sediment geochemistry and behaviour of post-settlement bivalves

2009 ◽  
Vol 383 ◽  
pp. 173-185 ◽  
Author(s):  
V Cummings ◽  
K Vopel ◽  
S Thrush
Keyword(s):  
Sediment Geochemistry ◽  
Marine Habitats ◽  
Coastal Marine

scholarly journals Spatial models to support the management of coastal marine ecosystems: a short review of the best practices in Liguria, Italy

2013 ◽  
Vol 15 (1) ◽  
pp. 189 ◽  
Author(s):  
M. VACCHI ◽  
M. MONTEFALCONE ◽  
V. PARRAVICINI ◽  
A. ROVERE ◽  
P. VASSALLO ◽  
...  
Keyword(s):  
Human Impacts ◽  
Spatial Models ◽  
Short Review ◽  
Posidonia Oceanica ◽  
Spatial Modelling ◽  
Coastal Development ◽  
Marine Habitat ◽  
Marine Habitats ◽  
Coastal Marine ◽  
The Status

Spatial modelling is an emerging approach to the management of coastal marine habitats, as it helps understanding and predicting the results of global change. This paper reviews critically two recent examples developed in Liguria, an administrative region of NW Italy. The first example, aiming at predicting habitat status depending on pressures, provides managers with the opportunity of envisaging different scenarios for the consequences of coastal development choices. The second example defines the status of an important Mediterranean coastal marine habitat (Posidonia oceanica meadows) under natural conditions, allowing for quantifying human impacts on regressed meadows. Both modelling approaches are useful to define the targets of coastal management, and may help choosing the best management option. Well-planned and sustained monitoring is essential to model validation and improvement.

Waterbirds as indicators of ecosystem health in the coastal marine habitats of southern Florida: 1. Selection and justification for a suite of indicator species

2014 ◽  
Vol 44 ◽  
pp. 148-163 ◽  
Author(s):  
John C. Ogden ◽  
John D. Baldwin ◽  
Oron L. Bass ◽  
Joan A. Browder ◽  
Mark I. Cook ◽  
...  
Keyword(s):  
Indicator Species ◽  
Ecosystem Health ◽  
Marine Habitats ◽  
Coastal Marine ◽  
Southern Florida

Diets and trophic guilds of small fishes from coastal marine habitats in western Taiwan

2017 ◽  
Vol 91 (1) ◽  
pp. 331-345 ◽  
Author(s):  
J. P. Egan ◽  
U.-S. Chew ◽  
C.-H. Kuo ◽  
V. Villarroel-Diaz ◽  
P. J. Hundt ◽  
...  
Keyword(s):  
Trophic Guilds ◽  
Marine Habitats ◽  
Coastal Marine

Pastinachus solocirostris sp. nov., a new species of Stingray (Elasmobranchii: Myliobatiformes) from the Indo-Malay Archipelago

Zootaxa ◽  
2005 ◽  
Vol 1040 (1) ◽  
pp. 1 ◽  
Author(s):  
PETER R. LAST ◽  
B. MABEL MANJAJI ◽  
GORDON K. YEARSLEY
Keyword(s):  
New Species ◽  
Adult Size ◽  
Pectoral Fin ◽  
Malay Archipelago ◽  
Marine Habitats ◽  
Coastal Marine ◽  
A New Species ◽  
Malaysian Borneo

A new stingray, Pastinachus solocirostris sp. nov., is described from material collected from Malaysian Borneo and Indonesia. It differs from the only other recognised member of the genus, P. sephen, in having a smaller adult size, more elongate disc and head, longer and more acute snout covered to its apex with enlarged denticles, more posteriorly located sting, longer and more slender ventral cutaneous fold, enlarged pearl-shaped nuchal thorns, and fewer pectoral-fin radials and vertebrae. It appears to occur primarily in estuaries and turbid coastal marine habitats off Borneo and Sumatra.

Waterbirds as indicators of ecosystem health in the coastal marine habitats of Southern Florida: 2. Conceptual ecological models

2014 ◽  
Vol 44 ◽  
pp. 128-147 ◽  
Author(s):  
John C. Ogden ◽  
John D. Baldwin ◽  
Oron L. Bass ◽  
Joan A. Browder ◽  
Mark I. Cook ◽  
...  
Keyword(s):  
Ecosystem Health ◽  
Ecological Models ◽  
Marine Habitats ◽  
Coastal Marine ◽  
Southern Florida

scholarly journals Microaerophilic Fe(II)-Oxidizing Zetaproteobacteria Isolated from Low-Fe Marine Coastal Sediments: Physiology and Composition of Their Twisted Stalks

2017 ◽  
Vol 83 (8) ◽  
Author(s):  
K. Laufer ◽  
M. Nordhoff ◽  
M. Halama ◽  
R. E. Martinez ◽  
M. Obst ◽  
...  
Keyword(s):  
Trace Metals ◽  
Marine Sediments ◽  
Dry Weight ◽  
Coastal Sediments ◽  
Organic Carbon Content ◽  
Coastal Marine Sediments ◽  
Content Type ◽  
Marine Habitats ◽  
Coastal Marine ◽  
Freshwater Habitats

ABSTRACT Microaerophilic Fe(II) oxidizers are commonly found in habitats containing elevated Fe(II) and low O2 concentrations and often produce characteristic Fe mineral structures, so-called twisted stalks or tubular sheaths. Isolates originating from freshwater habitats are all members of the Betaproteobacteria, while isolates from marine habitats belong almost exclusively to the Zetaproteobacteria. So far, only a few isolates of marine microaerophilic Fe(II) oxidizers have been described, all of which are obligate microaerophilic Fe(II) oxidizers and have been thought to be restricted to Fe-rich systems. Here, we present two new isolates of marine microaerophilic Fe(II)-oxidizing Zetaproteobacteria that originate from typical coastal marine sediments containing only low Fe concentrations (2 to 11 mg of total Fe/g of sediment [dry weight]; 70 to 100 μM dissolved Fe2+ in the porewater). The two novel Zetaproteobacteria share characteristic physiological properties of the Zetaproteobacteria group, even though they come from low-Fe environments: the isolates are obligate microaerophilic Fe(II) oxidizers and, like most isolated Zetaproteobacteria, they produce twisted stalks. We found a low organic carbon content in the stalks (∼0.3 wt%), with mostly polysaccharides and saturated aliphatic chains (most likely lipids). The Fe minerals in the stalks were identified as lepidocrocite and possibly ferrihydrite. Immobilization experiments with Ni2+ showed that the stalks can function as a sink for trace metals. Our findings show that obligate microaerophilic Fe(II) oxidizers belonging to the Zetaproteobacteria group are not restricted to Fe-rich environments but can also be found in low-Fe marine environments, which increases their overall importance for the global biogeochemical Fe cycle. IMPORTANCE So far, only a few isolates of benthic marine microaerophilic Fe(II) oxidizers belonging to the Zetaproteobacteria exist, and most isolates were obtained from habitats containing elevated Fe concentrations. Consequently, it was thought that these microorganisms are important mainly in habitats with high Fe concentrations. The two novel isolates of Zetaproteobacteria that are presented in the present study were isolated from typical coastal marine sediments that do not contain elevated Fe concentrations. This increases the knowledge about possible habitats in which Zetaproteobacteria can exist. Furthermore, we show that the physiology and the typical organo-mineral structures (twisted stalks) that are produced by the isolates do not notably differ from the physiology and the cell-mineral structures of isolates from environments with high Fe concentrations. We also showed that the organo-mineral structures can function as a sink for trace metals.

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