Field surveys Undertaken by the Ulster Archaeological Society in 2007

The fieldwork survey group of the Ulster Archaeological Society carried out a second season of field surveys at four sites in 2007. These were a rath at Lisnabreeny, Co Down; the Yew Terraces at Castle Ward, Co Down; Yellow Jack’s cairn on Divis Mountain, Co Antrim; and stone circles and stone rows at Davagh Lower, Co Tyrone

Iowa as a Litter-Free State : Findings, Implications & Recommendations from the Statewide Litter Surveys, 2002

The research summarized in this report examines: current litter policies and practices of public organizations, the amount and makeup of litter along Iowa roadways, and the opinions of Iowans regarding litter and illegal dumping.

The High-Redshift Quasar Luminosity Function from Multi-Epoch Imaging Surveys

Thesis (Ph.D.)--University of Washington, 2016-08

A Course on sample surveys for statistics students

Statisticians should be involved at all stages of sample surveys and courses on surveys need to reflect this by covering both theoretical and practical aspects. Teaching methods could include some hands-on experience, directed reading, and use of software designed for teaching or professional use, as well as more traditional lecturing. Suggestions are given for a course of about fifty hours.

Using passive acoustics and shore based surveys to investigate the use of Lundy Island’s near shore water by small odontocetes

The use of waters around Lundy by dolphins and porpoises was measured using summer shore-based watches and passive acoustic surveillance between July 2011 and July 2012. Common dolphins (Delphinus delphis) were the only cetacean species observed during shore-based surveys. C-PODs moored on the Ethel and MV Robert wrecks close to the Lundy coast showed a peak in delphinid vocal activity during August 2011. Passive acoustic detections of harbour porpoises (Phocoena phocoena) were highest during ebb tidal phases and most often associated with the tidal rip at the south of the island. These findings show tidal and monthly influences on odontocete behaviour and highlight the value of continuous, passive acoustic monitoring for these highly mobile marine predators around Lundy.

Standing stock density estimates (kg/hectare) for fish from 1969 through 70 UNDP/FAO and 1976 EAFFRO trawl surveys in the Kenya waters of Lake Victoria

A statistical comparison of standing stock density estimates (Kg/hectare) from 26 UNDP/FAO 1%9 thru 70 and 63 EAFFRO 1976 bottom trawl surveys revealed the following; 1) Statistically significant differences between mean density values at 4 of 7 depths {4-9 to 30-39 m}. 2) The 1969 thru 70 UNDP/FAO Values were higher at the 4 levels. 3) No statistically significant menn density value differences at 3 depths (40-49 to 60-69 m), but decreased values for the 1976 EAFFRO survey at 40-49 and 50-59 m depth. It was concluded from these comparisons that no capital investment should be made into a trawler industry for fish meal production in the Kenya waters of Lake Victoria until further bottom trawl surveys can be conducted to either substantiate or disapprove these differences over the six year time span.

The importance of cotton disease surveys in Queensland for monitoring endemic diseases and detecting new pathogens and pests

The cotton industry in Australia funds biannual disease surveys conducted by plant pathologists. The objective of these surveys is to monitor the distribution and importance of key endemic pests and record the presence or absence of new or exotic diseases. Surveys have been conducted in Queensland since 2002/03, with surveillance undertaken by experienced plant pathologists. Monitoring of endemic diseases indicates the impact of farming practices on disease incidence and severity. The information collected gives direction to cotton disease research. Routine diagnostics has provided early detection of new disease problems which include 1) the identification of Nematospora coryli, a pathogenic yeast associated with seed and internal boll rot; and 2) Rotylenchulus reniformis, a plant-parasitic nematode. This finding established the need for an intensive survey of the Theodore district revealing that reniform was prevalent across the district at populations causing up to 30% yield loss. Surveys have identified an exotic defoliating strain (VCG 1A) and non-defoliating strains of Verticillium dahliae, which cause Verticillium wilt. An intensive study of the diversity of V. dahliae and the impact these strains have on cotton are underway. Results demonstrate the necessity of general multi-pest surveillance systems in broad acre agriculture in providing (1) an ongoing evaluation of current integrated disease management practices and (2) early detection for a suite of exotic pests and previously unknown pests.

Aerial surveys to monitor bluefin tuna abundance and track efficiency of management measures

Conservation and management measures for exploited fish species rely on our ability to monitor variations in population abundance. In the case of the eastern stock of Atlantic bluefin tuna (ABFT), recent changes in management policies have strongly affected the reliability of fishery-dependent indicators due to drastic changes in fishing season/area, fisheries selectivity and strategy. However, fishery-independent indices of abundance are rare for large pelagic fish, and obtaining them is often costly and labor intensive. Here, we show that scientific aerial surveys are an appropriate tool for monitoring juvenile bluefin tuna abundance in the Mediterranean. We present an abundance index based on 62 aerial surveys conducted since 2000, using 2 statistical approaches to deal with the sampling strategy: line and strip transects. Both approaches showed a significant increase in juvenile ABFT abundance in recent years, resulting from the recovery plan established in 2007. Nonetheless, the estimates from the line transect method appear to be more robust and stable. This study provides essential information for fisheries management. Expanding the spatial coverage to other nursery grounds would further increase the reliability and representativeness of this index.

A map of North America : from the latest surveys and maps /

Relief shown pictorially.

Investigating bias in recreational fishing surveys: Fishers listed in public telephone directories fish similarly to their unlisted counterparts

Several recent offsite recreational fishing surveys have used public landline telephone directories as a sampling frame. Sampling biases inherent in this method are recognised, but are assumed to be corrected through demographic data expansion. However, the rising prevalence of mobile-only households has potentially increased these biases by skewing raw samples towards households that maintain relatively high levels of coverage in telephone directories. For biases to be corrected through demographic expansion, both the fishing participation rate and fishing activity must be similar among listed and unlisted fishers within each demographic group. In this study, we tested for a difference in the fishing activity of listed and unlisted fishers within demographic groups by comparing their avidity (number of fishing trips per year), as well as the platform used (boat or shore) and species targeted on their most recent fishing trip. 3062 recreational fishers were interviewed at 34 tackle stores across 12 residential regions of Queensland, Australia. For each fisher, data collected included their fishing avidity, the platform used and species targeted on their most recent trip, their gender, age, residential region, and whether their household had a listed telephone number. Although the most avid fishers were younger and less likely to have a listed phone number, cumulative link models revealed that avidity was not affected by an interaction of phone listing status, age group and residential region (p > 0.05). Likewise, binomial generalized linear models revealed that there was no interaction between phone listing, age group and avidity acting on platform (p > 0.05), and platform was not affected by an interaction of phone listing status, age group, and residential region (p > 0.05). Ordination of target species using Bray-Curtis dissimilarity indices found a significant but irrelevant difference (i.e. small effect size) between listed and unlisted fishers (ANOSIM R < 0.05, p < 0.05). These results suggest that, at this time, the fishing activity of listed and unlisted fishers in Queensland is similar within demographic groups. Future research seeking to validate the assumptions of recreational fishing telephone surveys should investigate fishing participation rates of listed and unlisted fishers within demographic groups.

Gillette's map of Oneida Co., New York : from actual surveys /

County cadastral wall map showing towns (townships), numbered town survey divisions, irregular rural property tracts, rural buildings, and rural householders' names.