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Journal Article

Coastal zooplankton in the waters of Iligan City, northern Mindanao, Philippines.

01 Jan 2015-Aacl Bioflux (Bioflux)-Vol. 8, Iss: 4, pp 588-601
TL;DR: The relationship of physicochemical paramaters of the water and the composition, diversity and abundance of zooplankton assemblage in the nearshore waters surrounding Iligan City were investigated.
Abstract: The relationship of physicochemical paramaters of the water and the composition, diversity and abundance of zooplankton assemblage in the nearshore waters surrounding Iligan City were investigated. Hydrological parameters assessed in the waters revealed values that are within the standard set by the Philippines Department of Natural Resources for marine fauna and flora to thrive and be abundant. Rich composition of mesozooplankton was observed with a total of 103 zooplankton comprising the community. Among these zooplankton, copepods were the most numerous group with Canthocalanus pauper, Paracalanus parvus, Oncaea venusta, Acartia erythraea and Oncaea media being the most dominant species in all sampling stations. In terms of copepod diversity profile, relatively high Shannon index (H’: 3.1-3.5) were noted implying that the area is teeming with diverse species of copepods. Although copepods were the most common zooplankton in the area, other groups, namely the protochordates, chaetognaths and chordates (fish eggs and fish larvae) were also abundant. Results of the Canonical Correspondence Analysis (CCA) revealed that water motion may be responsible to the high abundance and diversity of the copepods since this factor can lead to the mixing and transport of more copepods into the area. Hence, the high abundance of these certain groups of zooplankton may imply the high potential of the areas to be used as nursery ground for fish and other macroinvertebrates thereby further supporting the importance of maintaining the marine sanctuary already established in the area.
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Journal Article
TL;DR: In this paper, mesozooplankton composition, diversity, abundance and their relation with the physicochemical parameters of the waters during high and low tides in San Ildefonso Cape, Aurora Province, Philippines were compared.
Abstract: Mesozooplankton composition, diversity, abundance and their relation with the physicochemical parameters of the waters during high and low tides in San Ildefonso Cape, Aurora Province, Philippines were compared. A total of 60 species belonging to 9 major groups were identified. Copepoda constituted the major bulk of the mesozooplankton community with Paracalanus parvus, Corycaeus andrewsii, Oithona similis and Oncaea venusta being the most abundant and widely distributed copepods in the said area. Using several diversity indices, high diversity in the mesozooplankton taxa was observed, but no differences were seen between the sampling stations and between the two tidal cycles. Likewise, the results of NPMANOVA revealed no significant differences (p>0.05) in mesozooplankton relative abundance between and within sampling stations between and during high and low tides. The results may imply that the level of mesozooplankton diversity and abundance did not fluctuate with changes in the tide levels and that mesozooplankton taxa were thus uniformly distributed in the waters of San Ildefonso Cape. Results of Canonical Correspondence Analysis revealed dissolved oxygen in influencing the mesozooplankton composition and abundance; however other factors (i.e. Kuroshio current) may also be important in shaping the community structure of mesozooplankton. Considering the importance of copepods as major component of the marine zooplankton and its function in marine food webs, the present records are therefore crucial in understanding the dynamics of marine ecosystems and are necessary for purposes of management and conservation of marine resources.

4 citations

References
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Journal Article
TL;DR: PAST (PAleontological STatistics) as discussed by the authors is a simple-to-use software package for executing a range of standard numerical analysis and operations used in quantitative paleontology.
Abstract: A comprehensive, but simple-to-use software package for executing a range of standard numerical analysis and operations used in quantitative paleontology has been developed. The program, called PAST (PAleontological STatistics), runs on standard Windows computers and is available free of charge. PAST integrates spreadsheet-type data entry with univariate and multivariate statistics, curve fitting, timeseries analysis, data plotting, and simple phylogenetic analysis. Many of the functions are specific to paleontology and ecology, and these functions are not found in standard, more extensive, statistical packages. PAST also includes fourteen case studies (data files and exercises) illustrating use of the program for paleontological problems, making it a complete educational package for courses in quantitative methods.

19,926 citations


"Coastal zooplankton in the waters o..." refers methods in this paper

  • ...Statistical tests were computed with the aid of the PAST (PAleontological STastical) software version 2.17 (http://folk.uio.no/ohammer/past/) (Hammer et al 2001)....

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Journal Article
TL;DR: This special volume covers in detail the biology of calanoid copepods, aquatic animals that live in both marine and fresh water, and are of prime importance in marine ecosystems as they form a direct link between phytoplankton and fish.
Abstract: This special volume covers in detail the biology of calanoid copepods. Copepods are probably the most numerous multicellular organisms on earth. They are aquatic animals that live in both marine and fresh water, and are of prime importance in marine ecosystems as they form a direct link between phytoplankton and fish. This volume is essential for all marine biologists.

1,280 citations


"Coastal zooplankton in the waters o..." refers background in this paper

  • ...They are so plentiful, popular and frequently encountered that they even outnumber the land insects although the insects have more species compared to that of the copepods (Mauchline et al 1998)....

    [...]

Journal ArticleDOI
TL;DR: The mechanism with which the author is concerned here is diffusion; diffusion of materials into a benthic alga or other organism and the diffusion of metabolic products outward.
Abstract: Introduction In the sea it appears that fertility for phytoplankton, microphytes and macrophytes is rather mutually exclusive. That is to say, a place ideally fertile for one of these forms is not ideal for the others. RUTTNER (1926) and FELDMANN (1938), among others, have observed that benthic populations are reduced äs calm or stagnant water is reached. On the other hand, CHANDLER feit (1937) the opposite to be true in respect to phytoplankton. WHITFORD (e. g.,1960) has demonstrated experimentally the tenability of RUTTNER'S hypothesis relative to lotic and lentic stream plants. RUTTNER's hypothesis was that water movement breaks down boundary layers of depleted water near the plants, thus increasing diffusion which in turn results in accelerated growth. Lack of a method of measur ing the effect of water movement on diffusion has hampered advance in understanding the phenomena involved. Thus, little has been added since to what RUTTNER said, It must be made clear that this is a process quite different from the mass action effects associated with stream velocity (GESSNER, e.g*51950)5waveforce(JoNEsandD£METROPOULOS,1968)} wave mixing influence on temperature (GESSNER and HAMMER, 1967) or wave-related water surge such äs NORTH et al. (1969) have reported äs distributional factorsIt is also different from the antagonism between planktonic and benthic forms which FITZGERALD (1969) described äs being due primarily to ferdlizer availability and antibiotic activity. The mechanism with which we seem to be concerned here is diffusion; diffusion of materials into a benthic alga or other organism and the diffusion of metabolic products outward. MCCONNELL and SIGLER (1959) actually devised a method which provides integrated measurements of the diffusion enhancement by current velocities, turbulence and other factors. For this they used the weight loss from 2,25 g sodmm chloride tablets during 1-minute immersions. Just recently the author's attention has been drawn to the use ot calcium Sulfate balls on welding rod supports (Muus, 1968) for measuring water movement over a period of a few hours. Muus did not mention diffusion and, like McCoNNE LL and SIGLER, related his results to average current velocities, While effective in non-tidal waters, these

264 citations