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2 documents found tagged intertidal [X]
  • Title
    Ecology of marine macro algal flora of Visakhapatnam coastal areas, Bay of Bengal, India
    Type
    Journal Article
    Description
    An ecological study was conducted on species composition, vertical distribution and monthly variations of marine macro algae along the Visakhapatnam coast, Bay of Bengal, India between May 2013 and April 2014. A total of 48 species was recorded, 18 species belonging to phylum Chlorophyta, nine species to Phaeophyta and 21 species to Rhodophyta. The phylum Rhodophyta was the most dominant group with the highest number of species composition (44.0%) followed by Chlorophyta (37.0%) and Phaeophyta (19.0%). Monthly seaweed distribution data showed the dominance of Rhodophyta members (43.75%) during November to February, when compared to that of Chlorophyta and Phaeophyta members. In addition, the data also revealed that the months from June to August contributed favourable conditions for the growth of Chlorophyta members (29.16%) when compared to that of other months. The present study has recorded two new species (Ulva lactuca and Enteromorpha intestinalis). Thirty-five species once recorded are absent from the Visakhapatnam coast. These changes are attributed to the impact of marine water pollution and climate change.
    Attribution
    I. Vishnupriya Sowjanya & P.S. Raja Sekhar, Journal of Threatened Taxa, Vol 9, No 3 (2017); pp. 9911–9919 http://dx.doi.org/10.11609/jott.2102.9.3.9911-9919
  • Title
    Intertidal Foraminifera of Indian coast - a scanning electron photomicrograph-illustrated catalogue
    Type
    Journal Article
    Description
    Foraminifera (forams) are very useful in deducing diverse environmental parameters such as palaeoclimate, oil deposits, oceanography, pollution monitoring and palaeomonsoons. Forams are calcareous, shell-secreting protists and are likely to be adversely affected due to anthropogenic ocean acidification caused by CO2 emission. Considering their significance and status, we have surveyed the occurrence of intertidal forams along the Indian Coast and Amini atoll of Lakshdweep Islands. Scanning electron microscopic observations have been carried out and are presented here. The foram assemblage is distinct from the tropical sites surveyed elsewhere while some of the species are common, suggesting that the local oceanographic conditions are major determinants in distribution of foram species. A total of 151 species of Foraminifera belonging to 65 genera, 41 families and 7 suborders were recorded in the present study. Only 4 species were planktonic and the rest were benthic. Rotalina and Miliolina were found to be dominant suborders. This paper contains SEM images of 142 identified species and surface details of some of species. The observations will serve the needs of researchers working with forams, especially in identification and morphological analysis.
    Attribution
    Devi G.S., Rajashekhar K.P. (2009). Journal of Threatened Taxa 1(1) pp. 17-36; doi:10.11609/JoTT.o1977.17-36