Influence of coralline algae on biodiversity of macrobenthic community in intertidal zone of Nanji Islands

2014 ◽  
Vol 22 (5) ◽  
pp. 640 ◽  
Author(s):  
Tang Yanbin ◽  
Liao Yibo ◽  
Shou Lu ◽  
Zeng Jiangning ◽  
Gao Aigen ◽  
...  
Keyword(s):  
Intertidal Zone ◽  
Macrobenthic Community ◽  
Coralline Algae ◽  
Nanji Islands

Intertidal zone of the Nanji Islands is a niche for dominant species of the macrobenthic community

2016 ◽  
Vol 36 (2) ◽  
Author(s):  
汤雁滨 TANG Yanbin ◽  
廖一波 LIAO Yibo ◽  
寿鹿 SHOU Lu ◽  
曾江宁 ZENG Jiangning ◽  
高爱根 GAO Aigen ◽  
...  
Keyword(s):  
Intertidal Zone ◽  
Dominant Species ◽  
Macrobenthic Community ◽  
Nanji Islands

Recruitment of the limpet Patella ulyssiponensis and its relationship with crustose coralline algae: patterns of juvenile distribution and larval settlement

2019 ◽  
Vol 99 (8) ◽  
pp. 1787-1796 ◽  
Author(s):  
M. I. Seabra ◽  
T. Cruz ◽  
J. N. Fernandes ◽  
T. Silva ◽  
S. J. Hawkins
Keyword(s):  
Intertidal Zone ◽  
Larval Settlement ◽  
Coralline Algae ◽  
Rock Pools ◽  
Crustose Coralline Algae ◽  
Bare Rock ◽  
Naturally Occurring ◽  
Patella Ulyssiponensis ◽  
Maximum Shell Length ◽  
Sw Portugal

AbstractRecruitment of the limpet Patella ulyssiponensis was investigated in relation to the presence of living crustose coralline algae (CCA) in rocky-shore habitats. Juvenile limpets (≤10 mm maximum shell length) were counted in CCA-present and CCA-absent habitats, on three shores in SW Portugal during summer 2007 and winter 2009. Furthermore, the settling response of laboratory-reared larvae of P. ulyssiponensis to CCA-covered substratum, and bare-rock, was examined. Across the intertidal zone, we found a clear association between the distribution and abundance of juveniles and the presence of CCA. Although the presence of CCA was not an absolute requisite for juvenile occurrence, null juvenile densities were mostly recorded in CCA-absent areas. The highest juvenile densities (maximum of 64 individuals in 15 × 15 cm) were consistently found in CCA-dominated habitats, namely steep wave-exposed areas at low-shore and rock-pools. The hypothesis of CCA-enhanced settlement was not supported, as settlement intensities of laboratory-reared larvae were similar between chips of rock encrusted by CCA and chips of bare-rock. From the overall number of settlers onto CCA-encrusted rock chips, 51% were found in tiny pits lacking CCA. This was the first study of the settlement patterns of larvae of the genus Patella using naturally occurring rocky substrata. These results are preliminary and should be confirmed with choice-experiments and improved monitoring of the position of settlers. We suggest that CCA plays a role in the recruitment of P. ulyssiponensis, potentially promoting survivorship of early benthic stages, but possibly not enhancing settlement.

scholarly journals New Data on Marine Radiocarbon Reservoir Effect in the Eastern Adriatic Based on Pre-Bomb Marine Organisms from the Intertidal Zone and Shallow Sea

Radiocarbon ◽  
2015 ◽  
Vol 57 (4) ◽  
pp. 527-538 ◽  
Author(s):  
Sanja Faivre ◽  
Tatjana Bakran-Petricioli ◽  
Jadranka Barešić ◽  
Nada Horvatinčić
Keyword(s):  
Intertidal Zone ◽  
Marine Organisms ◽  
Coralline Algae ◽  
Published Data ◽  
Shallow Sea ◽  
Reservoir Effect ◽  
Adriatic Coast ◽  
Mussel Shells ◽  
Reservoir Age ◽  
Mollusk Species

Radiocarbon analyses of 14 modern, pre-bomb marine organisms collected between AD 1836 and 1946 along the eastern Adriatic coast were performed. The 14C ages of five algal and nine mollusk samples were measured by accelerator mass spectrometry (AMS). Marine 14C reservoir ages (R) and regional offsets (ΔR) were calculated and compared. The marine reservoir ages of shells and algae significantly differ, even though both inhabit the hard substrate from the intertidal zone to shallow sea. Coralline algae had a considerably lower reservoir age (355 ± 34 14C yr) and ΔR value (–9 ± 34 14C yr) than mollusks (R 513 ± 53 14C yr; ΔR 154 ± 52 14C yr), though the variability of R was high in both groups. Although the microlocations of pre-bomb samples were not known and the studied mollusk species are able to inhabit marine or estuarine environments, it can be assumed that they were not significantly influenced by a freshwater admixture, due to their δ13C values being mostly in the marine range. However, as the entire eastern Adriatic is formed in carbonates, mollusk shells could be influenced by limestone-depleted 14C. In examining new data together with previously published data, the marine reservoir effect (MRE) for the Adriatic area is estimated to be 424 ± 57 14C yr (ΔR is 77 ± 57 14C yr). Without mussel shells, the estimated MRE is 378 ± 44 14C yr (ΔR is 28 ± 45 14C yr). The presented values are comparable to the MREs and mean ΔRs obtained for the Mediterranean by other authors.

scholarly journals Spatio-temporal variation of benthic diatom diversity and community structure in a sandy intertidal zone of the Nanji Islands, China

2017 ◽  
Vol 25 (9) ◽  
pp. 981-989
Author(s):  
Yuhang Li ◽  
◽  
Wandong Chen ◽  
Houcai Cai ◽  
Zhongmin Sun ◽  
...  
Keyword(s):  
Community Structure ◽  
Temporal Variation ◽  
Intertidal Zone ◽  
Benthic Diatom ◽  
Spatio Temporal ◽  
Nanji Islands

Long term changes of biodiversity of benthic macroalgae in the intertidal zone of the Nanji Islands

2010 ◽  
Vol 30 (2) ◽  
pp. 106-112 ◽  
Author(s):  
Jian-Zhang Sun ◽  
Xiu-Ren Ning ◽  
Feng-Feng Le ◽  
Wan-Dong Chen ◽  
Ding-Gen Zhuang
Keyword(s):  
Intertidal Zone ◽  
Long Term Changes ◽  
Nanji Islands ◽  
Benthic Macroalgae

The ultrastructure of the abdominal musculature of an orchestid amphipod

1990 ◽  
Vol 48 (3) ◽  
pp. 464-465
Author(s):  
Martin A. Levin ◽  
Lisa L. Cale ◽  
Valerie Lynch-Holm
Keyword(s):  
Intertidal Zone ◽  
High Water ◽  
Abdominal Muscles ◽  
Abdominal Musculature ◽  
Dorsal Muscle ◽  
High Water Mark ◽  
Thoracic Legs ◽  
Orchestia Cavimana

Orchestia is a genus of amphipod in the crustacean class Malacostraca. The order Amphipoda contains over 6000 species commonly called side swimmers, scuds and beach fleas(1). Most are marine bottom-dwellers utilizing their thoracic legs and posterior abdominal uropods for walking, crawling and swimming. However, some, like those in the genera Orchestia and Hyale are semiterrestrial. These amphipods, commonly referred to as “beach fleas,' “beach hoppers” or “sand fleas” can hop vigorously for great distances (up to 50 times their length) by extending their abdomens and telsons against the sand(2).In our study, the ultrastructure of the dorsal muscle cord of Orchestia grillus was examined. Vogel(3) described the abdominal muscles of Orchestia cavimana as consisting of two groups of muscles: a strong, complex, dorsal muscle cord used mainly for hopping and a group of weaker, ventral, longitudinal and oblique muscles.The specimens were collected in clumps of decaying seaweed and other detritus from the intertidal zone near the high water mark at Avery Point Beach, Connecticut.

Experimental effects of kelp canopies on subtidal coralline algae

2001 ◽  
Vol 26 (1) ◽  
pp. 102-108 ◽  
Author(s):  
A. J. Melville ◽  
S. D. Connell
Keyword(s):  
Coralline Algae

Macrobenthic community structure and influence on denitrification capacity in soft sediments (Mobile Bay, Alabama, USA)

2018 ◽  
Vol 605 ◽  
pp. 17-35 ◽  
Author(s):  
MP Jacquot ◽  
KM Dorgan ◽  
B Mortazavi ◽  
AA Kleinhuizen ◽  
WC Clemo
Keyword(s):  
Community Structure ◽  
Macrobenthic Community ◽  
Mobile Bay ◽  
Soft Sediments ◽  
Macrobenthic Community Structure
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