Comparison of sampling methods to assess benthic marine biodiversity : Are spatial and ecological relationships consistent among sampling gear?

The KUMEMEJIMA 2009 Expedition: station data and collecting sites

Zootaxa ◽

10.11646/zootaxa.3367.1.3 ◽

2012 ◽

Vol 3367 (1) ◽

pp. 8 ◽

Cited By ~ 1

Author(s):

TOHRU NARUSE

Keyword(s):

Sampling Methods ◽

Marine Biodiversity ◽

Station Data

The present paper introduces the sampling methods employed during the Marine Biodiversity Expedition — KUMEJIMA 2009. Data of all sampling stations are listed.

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The distribution of benthic amphipod crustaceans in Indonesian seas

PeerJ ◽

10.7717/peerj.12054 ◽

2021 ◽

Vol 9 ◽

pp. e12054

Author(s):

Tri Arfianti ◽

Mark John Costello

Keyword(s):

Neural Network ◽

Sampling Methods ◽

Fish Predation ◽

Future Research ◽

Marine Biodiversity ◽

Coral Triangle ◽

Research Needs ◽

Indonesian Seas ◽

Biogeographic Region ◽

Network Method

Amphipod crustaceans are an essential component of tropical marine biodiversity. However, their distribution and biogeography have not been analysed in one of the world’s largest tropical countries nested in the Coral Triangle, Indonesia. We collected and identified amphipod crustaceans from eight sites in Indonesian waters and combined the results with data from 32 additional sites in the literature. We analysed the geographic distribution of 147 benthic amphipod crustaceans using cluster analysis and the ‘Bioregions Infomaps’ neural network method of biogeographic discrimination. We found five groups of benthic amphipod crustaceans which show relationships with sampling methods, depth, and substrata. Neural network biogeographic analysis indicated there was only one biogeographic region that matched with the global amphipod regions and marine biogeographic realms defined for all marine taxa. There was no support for Wallaces or other lines being marine biogeographic boundaries in the region. Species richness was lower than expected considering the region is within the Coral Triangle. We hypothesise that this low richness might be due to the intense fish predation which may have limited amphipod diversification. The results indicated that habitat rather than biogeography determines amphipod distribution in Indonesia. Therefore, future research needs to sample more habitats, and consider habitat in conservation planning.

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Analysis of sampling methods of estuarine benthic macrofaunal assemblages: sampling gear, mesh size, and taxonomic resolution

Hydrobiologia ◽

10.1007/s10750-014-2033-z ◽

2014 ◽

Vol 743 (1) ◽

pp. 157-174 ◽

Cited By ~ 16

Author(s):

Gabriel B. G. Souza ◽

Francisco Barros

Keyword(s):

Sampling Methods ◽

Mesh Size ◽

Taxonomic Resolution ◽

Sampling Gear ◽

Gear Mesh

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A Rapid Assessment of the Marine Megafauna Biodiversity Around South Bali, Indonesia

Frontiers in Marine Science ◽

10.3389/fmars.2021.606998 ◽

2021 ◽

Vol 8 ◽

Author(s):

Putu Liza Kusuma Mustika ◽

Rob Williams ◽

Hanggar Prasetio Kadarisman ◽

Andri Oktapianus Purba ◽

I Putu Ranu Fajar Maharta ◽

...

Keyword(s):

Sampling Methods ◽

Low Cost ◽

Rapid Assessment ◽

Distance Sampling ◽

Sperm Whale ◽

Marine Biodiversity ◽

Physeter Macrocephalus ◽

Cetacean Species ◽

Abundance Estimates ◽

Marine Megafauna

A low-cost, small-boat, rapid assessment survey was conducted on the waters off the southern Peninsula of Bali. The objectives were: (1) to conduct an inventory of cetacean species in the study area; (2) to map cetacean distribution to inform the design of the Badung MPA; (3) to estimate relative abundance of cetaceans and record information on presence and distribution of other marine megafauna; and (4) to train observers in the use of distance sampling methods. The survey adopted a “training while doing” approach to build local capacity for marine biodiversity monitoring, while collecting a snapshot of data to assess species richness and distribution. The survey accomplished its first two objectives, but due to violation of underlying assumptions, had mixed success with the third objective. Our survey revealed that the waters off the southern Peninsula of Bali support a rich cetacean fauna, with at least seven cetacean species, other marine megafauna, and avian species. Seven cetacean species found on our survey include: spinner dolphin (Stenella longirostris), pantropical spotted dolphin (Stenella attenuata), Fraser’s dolphin (Lagenodephis hosei), Risso’s dolphin (Grampus griseus), bottlenose dolphin (Tursiops sp.), Bryde’s whale (Balaenoptera edeni), and sperm whale (Physeter macrocephalus). Density estimates were low for all whales combined, but seem implausibly high for dolphins; likely due to violation of assumptions of distance sampling methods. Future surveys should include sufficient time for training to generate reliable abundance estimates. A dedicated bycatch study is needed to understand sustainability of bycatch mortality relative to reliable abundance estimates.

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Going Beyond 3-D Imaging: Automated 3-D Montaged image Analysis of Cytological Specimens

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100163873 ◽

1996 ◽

Vol 54 ◽

pp. 282-283

Author(s):

Badrinath Roysam ◽

Hakan Ancin ◽

Douglas E. Becker ◽

Robert W. Mackin ◽

Matthew M. Chestnut ◽

...

Keyword(s):

Image Analysis ◽

Structural Changes ◽

Sampling Methods ◽

Spatial Clustering ◽

Three Dimensional ◽

Field Of View ◽

Cell Counting ◽

Depth Of Field ◽

Tissue Cell ◽

Tissue Organization

This paper summarizes recent advances made by this group in the automated three-dimensional (3-D) image analysis of cytological specimens that are much thicker than the depth of field, and much wider than the field of view of the microscope. The imaging of thick samples is motivated by the need to sample large volumes of tissue rapidly, make more accurate measurements than possible with 2-D sampling, and also to perform analysis in a manner that preserves the relative locations and 3-D structures of the cells. The motivation to study specimens much wider than the field of view arises when measurements and insights at the tissue, rather than the cell level are needed.The term “analysis” indicates a activities ranging from cell counting, neuron tracing, cell morphometry, measurement of tracers, through characterization of large populations of cells with regard to higher-level tissue organization by detecting patterns such as 3-D spatial clustering, the presence of subpopulations, and their relationships to each other. Of even more interest are changes in these parameters as a function of development, and as a reaction to external stimuli. There is a widespread need to measure structural changes in tissue caused by toxins, physiologic states, biochemicals, aging, development, and electrochemical or physical stimuli. These agents could affect the number of cells per unit volume of tissue, cell volume and shape, and cause structural changes in individual cells, inter-connections, or subtle changes in higher-level tissue architecture. It is important to process large intact volumes of tissue to achieve adequate sampling and sensitivity to subtle changes. It is desirable to perform such studies rapidly, with utmost automation, and at minimal cost. Automated 3-D image analysis methods offer unique advantages and opportunities, without making simplifying assumptions of tissue uniformity, unlike random sampling methods such as stereology.12 Although stereological methods are known to be statistically unbiased, they may not be statistically efficient. Another disadvantage of sampling methods is the lack of full visual confirmation - an attractive feature of image analysis based methods.

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Pengaruh Tekanan Waktu, Locus Of Control , Tindakan Supervisi, Dan Materialitas Terhadap Penghentian Prematur Atas Prosedur Audit Studi Kasus Pada Kantor Akuntan Publik Daerah Istimewa Yogyakarta Tahun 2015

Kajian Bisnis STIE Widya Wiwaha ◽

10.32477/jkb.v24i1.216 ◽

2017 ◽

Vol 24 (1) ◽

pp. 35-53

Author(s):

Sulastiningsih Sulastiningsih ◽

Intan Ayu Candra

Keyword(s):

Locus Of Control ◽

Premature Termination ◽

Sampling Methods ◽

Time Pressure ◽

Linear Regression Analysis ◽

Multiple Linear Regression Analysis ◽

Test Reliability ◽

Friedman Test ◽

Independent Variables ◽

Public Accountant

The purpose of this study is to prove: (1) Time pressure, locus of control, the action of supervision and materiality partially affect the premature termination of the audit procedures (2) Time pressure, locus of control, supervision and materiality simultaneously affect the premature termination on the audit procedures. This research was conducted in Public Accountant firm in Yogyakarta region of which total 12 samples of KAP, by distributing 105 questionnaires, and 57 questionnaires were returned (54%). 34 of the returned questionnaires can be processed (34%). The samples in this study were determined by using non-probability sampling, one of purposive sampling methods. Data analysis consisted of: (1) validity test, reliability test and classical assumption. The result showed that the instruments used are quite reliable and valid (2) multiple linear regression analysis. The results are (a) Some of independent variables partially affect premature termination of the audit procedure, while the action of supervision does not influence premature termination of audit procedures (b) All independent variables influence simultaneously to the premature termination of the audit procedures (c) All independent variables showed that as much as 55% it affects on premature termination of the audit procedures, the rest of it are influenced by other variables. (3) Friedman Test. The result shows that there are order of priority of audit procedures being terminated.

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