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Results for “South Dakota Academy of Science Proceedings”

Search indexed USGS publications on groundwater, aquifers, geologic maps, mineral resources and earthquakes. Explore source records by subject and place.

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9 recordsLinked to original sources
USGS1968

A preliminary report of a recently discovered aquifer at Sioux Falls, South Dakota

A hydrologic study of the Big Sioux aquifer system was begun July 1, 1966, by the U.S. Geological Survey, in cooperation with the City of Sioux Falls and the East Dakota Conservancy Sub-District. Test drilling being done in the search for a southern outlet to the Big Sioux aquifer has led to the discovery of the outlet and of a deeper aquifer than was previously know to exist in this area. This aquifer, herein called the Sioux Falls aquifer, was first recognized as a very clean gravel in test hole USGS #1 between the depths of 60 to 83 feet. Subsequent test drilling and aquifer testing has shown the Sioux Falls aquifer to be capable of producing several hundred gallons of water per minute. THe chemical quality of this water surpasses that currently being used for the city supply. Further investigation of the aquifer is planned as a part of the continuing expansion of the water-supply facilities for Sioux Falls. This publication has been authorized by the Director of the U.S. Geological Survey and Earl McCart, Commissioner, City of Sioux Falls, South Dakota.

South Dakota↗
USGS2015

Angler satisfaction in South Dakota

Many industries use satisfaction measures to evaluate performance. The South Dakota Department of Game, Fish and Parks identified satisfaction as one of their performance measures for evaluating fishing in South Dakota. In fisheries management, the perspectives’ of license buyers are valuable to determine if management activities are providing the benefits anticipated by biologists. Surveys of South Dakota anglers are conducted to better understand licensees in order to promote satisfying angling experiences. Internet surveys were distributed to all license buyers providing email addresses in 2011 and 2012. Angler satisfaction was analyzed by angler type (demographics and fishing characteristics) to further clarify performance measures. Most anglers (> 70%) were satisfied with their angling experiences. Nonresidents expressed higher levels of satisfaction with fishing in South Dakota in 2011 and 2012 than residents. Anglers’ rating of fishing quality was more strongly correlated with satisfaction than their reported number of fish harvested, which suggests that strategies to influence angler perceptions and expectations can also be employed to influence satisfaction (in addition to techniques influencing fish populations). This research further integrates sociological data into South Dakota fisheries management processes.

South Dakota↗
USGS2015

Reasons anglers did not respond to an internet survey and evaluation of data quality

Natural resource management agencies have traditionally used statewide mail surveys to gather information from anglers, but cost savings and faster returns occur using the internet. This study examined mail or internet fishery survey return rates and associated data by license type of South Dakota resident anglers. Junior anglers (ages 16-18; Junior Combination license) had the lowest internet and mail survey return rates (20% and 28%, respectively), followed by adult anglers (ages 19-64; Adult Fishing and Adult Combination licenses; 30% and 39%, respectively), and senior anglers (ages 65+; Senior Fishing and Senior Combination licenses; 42% and 66%, respectively). The three age groups were significantly different on three email use characteristics (shared email, frequency of use, and comfort level). The primary reason for not responding to the internet survey was not receiving or noticing the email request, and secondarily, being too busy to respond. Although having a relatively low response rate, data collected by the internet compared to follow-up mail surveys of internet non-respondents were similar.

Proceedings of the South Dakota Academy of Science↗
USGS2017

Wildlife value orientation stability among South Dakota residents: Setting the stage for a longitudinal analysis

The concept of wildlife value orientations (WVOs) has been useful for understanding the diversity of public interests in wildlife management and has been shown to be a strong predictor of public attitudes towards a wide range of wildlife management actions and policies. WVOs consist of two predominant value orientations (domination and mutualism) defined by how people view their relationship with wildlife. WVO assessment, which analyzes response patterns on a series of scaled agree/disagree statements representing these two orientations, has led to the identification of four distinct types of people: a) utilitarian (high score on domination and low score on mutualism); (b) mutualist (low score on domination and high score on mutualism); (c) pluralist (high score on both WVO scales); and (d) distanced (low score on both WVO scales). The theoretical framework of WVOs is based on evidence that changing lifestyles arising from modernization contribute to a gradual shift away from domination toward mutualism. This theory suggests a longitudinal process of change that was tested in 2004 by cross-sectional analyses in 19 western states. More recent replications of WVO assessment in South Dakota in 2012 measured relatively similar proportions of WVO types (50% and 49% utilitarian, 15% and 16% mutualist, 29% and 25% pluralist, and 6% and 10% distanced in 2004 and 2012, respectively). Also, we identified similar proportions of WVO types and recreation participation comparing two counties with the largest urban populations (Minnehaha and Pennington) to the remainder of the state. Our results illustrate opportunities for continuing longitudinal analyses of WVO with an additional focus on within state changes.

Proceedings of the South Dakota Academy of Science↗
USGS2017

Importance of fishing as a segmentation variable in the application of a social worlds model

Market segmentation is useful to understanding and classifying the diverse range of outdoor recreation experiences sought by different recreationists. Although many different segmentation methodologies exist, many are complex and difficult to measure accurately during in-person intercepts, such as that of creel surveys. To address that gap in the literature, we propose a single-item measure of the importance of fishing as a surrogate to often overly- or needlesslycomplex segmentation techniques. The importance of fishing item is a measure of the value anglers place on the activity or a coarse quantification of how central the activity is to the respondent’s lifestyle (scale: 0 = not important, 1 = slightly, 2 = moderately, 3 = very, and 4 = fishing is my most important recreational activity). We suggest the importance scale may be a proxy measurement for segmenting anglers using the social worlds model as a theoretical framework. Vaske (1980) suggested that commitment to recreational activities may be best understood in relation to social group participation and the social worlds model provides a rich theoretical framework for understanding social group segments. Unruh (1983) identified four types of actor involvement in social worlds: strangers, tourists, regulars, and insiders, differentiated by four characteristics (orientation, experiences, relationships, and commitment). We evaluated the importance of fishing as a segmentation variable using data collected by a mixed-mode survey of South Dakota anglers fishing in 2010. We contend that this straightforward measurement may be useful for segmenting outdoor recreation activities when more complicated segmentation schemes are not suitable. Further, this index, when coupled with the social worlds model, provides a valuable framework for understanding the segments and making management decisions.

Proceedings of the South Dakota Academy of Science↗
USGS2018

Evaluation of internet surveys for conducting statewide angler surveys in South Dakota

Stakeholder information is critical for effective fisheries management. Agencies have traditionally used infrequent mail surveys to collect human dimensions data. Internet surveys provide cost savings, but are associated with caution due to data quality issues. To improve study validity, survey access can be controlled using email invitations, but because these addresses are voluntary, results may not be applicable to the entire population. Additionally, internet surveys typically have lower response rates than mail surveys, thus, a greater potential for nonresponse bias. To identify potential coverage and nonresponse biases in information typically collected by statewide angler surveys, we emailed a link to a web-based survey to all anglers who provided South Dakota Game, Fish and Parks (SDGFP) with an email address at the end of the 2011 and 2012 fishing seasons (December 31). Next, we mailed the same questionnaire to both a random sample of anglers not providing an email address and a sample of non-respondents to the internet survey. Internet survey results were similar to both mail surveys for variables SDGFP typically monitors via statewide angler surveys with the exception of slightly over representing male anglers and younger anglers; however, these slight biases can be adjusted by weighting procedures. Results from this study were used by SDGFP to design a web-based, annual statewide angler survey that would collect angler information statistically comparable to information collected by traditional statewide mail surveys.

South Dakota↗
USGS2019

Age, succesion planning & wildlife values of Upper Midwest landowners

It is well known that farmers are getting older; in the United States the average age of farmers is 58.3 years old and the rate of increase in age is accelerating. The average farmer age increased 10 years from 47.6 years old to 57.1 in a four year period (2003-2007). It is not necessarily a problem that farmers are getting older because farmers often retire later than workers in other parts of the labor force. The concern is that aging farmers are not being replaced by younger farmers since start-up costs have become insurmountable for many beginning farmers. Consequently, the age distribution of farmers has become highly skewed towards the older end of the spectrum. All the projections call for a massive transfer of land in the next decade which can have significant consequences as well as opportunities for wildlife management. For example, paid conservation programs may be especially attractive to older farmers who do not want to quit farming “cold turkey” by providing income for enrolling some land in these programs as well as reduce their work load. Our surveys of landowners in North Dakota, South Dakota and western Minnesota included questions asking landowners about their future plans for their land when they are no longer able to run their farm/ranch. About 54% of the landowners do not have any plans to change the size of their operations in the next 10 years, about 7% plan to decrease their operations and 31% plan to increase (8% undecided). These findings were strongly related to landowner age and current size of their farm/ranch. Most landowners (55%) have a strong desire to pass their farm/ranch operations on to family members and most (63%) were interested in conservation programs that would allow family members to continue with current farming/ranching operations. Most landowners’ future plans were not related to landowners’ land use and wildlife values, but for a small subset of landowners, land use and wildlife values were related to their succession plans.

Minnesota, North Dakota, South Dakota↗
USGS2016

Land-use change reduces habitat suitability for supporting managed honey bee colonies in the Northern Great Plains

Human reliance on insect pollination services continues to increase even as pollinator populations exhibit global declines. Increased commodity crop prices and federal subsidies for biofuel crops, such as corn and soybeans, have contributed to rapid land-use change in the US Northern Great Plains (NGP), changes that may jeopardize habitat for honey bees in a part of the country that supports >40% of the US colony stock. We investigated changes in biofuel crop production and grassland land covers surrounding ∼18,000 registered commercial apiaries in North and South Dakota from 2006 to 2014. We then developed habitat selection models to identify remotely sensed land-cover and land-use features that influence apiary site selection by Dakota beekeepers. Our study demonstrates a continual increase in biofuel crops, totaling 1.2 Mha, around registered apiary locations in North and South Dakota. Such crops were avoided by commercial beekeepers when selecting apiary sites in this region. Furthermore, our analysis reveals how grasslands that beekeepers target when selecting commercial apiary locations are becoming less common in eastern North and South Dakota, changes that may have lasting impact on pollinator conservation efforts. Our study highlights how land-use change in the NGP is altering the landscape in ways that are seemingly less conducive to beekeeping. Our models can be used to guide future conservation efforts highlighted in the US national pollinator health strategy by identifying areas that support high densities of commercial apiaries and that have exhibited significant land-use changes.

North Dakota, South Dakota↗