Papers by David Grandmaison
This document is a compilation of biological data and a description of past, present, and likely ... more This document is a compilation of biological data and a description of past, present, and likely future threats to the eastern sand darter, Ammocrypta pellucida (Agassiz)
Col. ill. Maps. Appendix. Includes bibliographic references. Project 08-385. This project was fun... more Col. ill. Maps. Appendix. Includes bibliographic references. Project 08-385. This project was funded through the Department of Defense Legacy Resource Management Program under Cooperative Agreement W912DY-08-0012 with the Arizona Game and Fish Department. David Grandmaison is a research biologist with Arizona's Game and Fish Department. The original report was completed in 2008
DISCLAIMER This document is a compilation of biological data and a description of past, present, ... more DISCLAIMER This document is a compilation of biological data and a description of past, present, and likely future threats to the spotted darter, Etheostoma maculatum (Kirtland). It does not represent a decision by the U.S. Fish and Wildlife Service (Service) on whether this taxon should be designated as a candidate species for listing as threatened or endangered under the Federal Endangered Species Act. That decision will be made by the Service after reviewing this document; other relevant biological and threat data not included herein; and all relevant laws, regulations, and policies. The result of the decision will be posted on the Service's Region 3 Web site (refer to: http://midwest.fws.gov/eco_serv/endangrd/lists/concern.html). If designated as a candidate species, the taxon will subsequently be added to the Service's candidate species list that is periodically published in the Federal Register and posted on the World Wide Web (refer to: http://endangered.fws.gov/wildlife.html). Even if the taxon does not warrant candidate status it should benefit from the conservation recommendations that are contained in this document.
pages, contains a drawing of the eastern hellbender and distribution maps Appendix 2-12 pages, co... more pages, contains a drawing of the eastern hellbender and distribution maps Appendix 2-12 pages, contains contact information for the individuals who were consulted for information SYSTEMATICS Common Name Eastern hellbender. Other common names include Allegheny alligator, Allegheny hellbender, alligator, alligator of the mountains, big water lizard, devil dog, ground puppy, leverian water newt, mud-devil, vulgo, walking catfish, and water dog (Nickerson and Mays 1973). Scientific Name Cryptobranchus alleganiensis alleganiensis (Daudin) Taxonomy The eastern hellbender (Cryptobranchus alleganiensis alleganiensis) belongs to the Order Caudata, family Cryptobranchidae. This family contains three extant species belonging to two living genera of salamander, Andrias, which live in the Orient, and Cryptobranchus, which inhabit parts of the eastern United States (Petranka 1998).
The Journal of Wildlife Management, 2011
The expansion of road networks in desert tortoise (Gopherus agassizii) habitat in the Sonoran Des... more The expansion of road networks in desert tortoise (Gopherus agassizii) habitat in the Sonoran Desert has raised questions concerning appropriate mitigation to reduce impacts at the population level. Although some effects, namely road-kill and habitat loss, have been well documented, illegal tortoise collection has been insufficiently addressed. It has become increasingly important for wildlife and land-use managers to understand the cumulative impacts of roads on tortoises and the effect that those impacts have on population persistence. We estimated the probability of desert tortoise detection and collection along 2-lane paved, maintained gravel, and non-maintained gravel roads to evaluate whether collection probabilities were related to road type. Although collection probability did not vary by road type, the probability of desert tortoise detection by passing motorists was greatest on maintained gravel roads and fewest on nonmaintained gravel and paved roads. These results have implications for effectively mitigating the impacts of roads on desert tortoises. Published 2011. This article is a U.S. Government work and is in the public domain in the USA.
Journal of Herpetology, 2010
Abstract We examined Desert Tortoise microhabitat selection on the Florence Military Reservation ... more Abstract We examined Desert Tortoise microhabitat selection on the Florence Military Reservation (FMR) in south-central Arizona where National Guard training and other activities, such as motorized recreation and grazing, are permitted. Previous research on the FMR indicated that Desert Tortoise home ranges overlapped with firing boxes, areas where most of the National Guard's training activity was concentrated. Our objective was to examine Desert Tortoise microhabitat selection within, and adjacent to, these firing boxes in an effort to guide future management for restoring degraded tortoise habitat on the installation. Desert Tortoises selected habitat that was characterized by a higher percentage of canopy cover, absence of cattle activity, and closer proximity to roads and washes than was available within their home range. Canopy cover had the highest calculated parameter importance and was included in each of the supported microhabitat selection models. Areas with sufficient canopy cover most likely provided shade for escaping the desert heat during periods of high tortoise activity. Our results suggest that management prescriptions that maintain, or increase, the amount of vegetative cover and that protect desert washes will have positive impacts on Desert Tortoise populations.
Journal of Herpetology, 2010
We determined annual survivorship and causes of mortality at two Desert Tortoise, Gopherus agassi... more We determined annual survivorship and causes of mortality at two Desert Tortoise, Gopherus agassizii, study sites in the Sonoran Desert, Arizona, based on radio-telemetry data. Annual survivorship was high (89-97%), did not differ between sexes, and was comparable to previous studies using markrecapture methods. Survivorship between sexes differed seasonally at one site, based on differences in seasonal activity patterns and differential exposure to predation by mountain lions, Puma concolor. In the absence of mammalian predation, seasonal survivorship did not differ between sexes. The next leading cause of mortality was failure to right oneself after a fall or after being flipped during reproductive or combat events.
Journal of Great Lakes Research, 2007
Nest predation has been identified as the primary mechanism contributing to reduction of reproduc... more Nest predation has been identified as the primary mechanism contributing to reduction of reproductive success for the marsh-breeding red-winged blackbird (Agelaius phoeniceus). Differences in rates of nest predation have been linked to nest site characteristics within a wetland, primarily water depth. However, the relationship between the landscape surrounding these habitats and the probability of nest predation is uncertain. Moreover, factors associated with reproductive success could be a potentially powerful indicator of ecological condition in wetland habitats. We investigated the influence of landscape pattern on nest success by monitoring 366 red-winged blackbird nests in 11 coastal wetlands along the south shore of Lake Superior. Of the 366 nests, 39% were successful, 56% failed, and 5% were abandoned or lacked sufficient evidence to determine nest fate. Nest predation accounted for over 93% of total failures. Predation rates ranged from 31% to 97% among the 11 wetland sites. We modeled nest predation using multi-model logistic regression analysis and the Akaike information criterion to identify and parameterize influential variables derived from the nest site, wetland, and landscape surrounding each wetland. Our results indicated that landscape variables comprised over 50% of model prediction weight in 15 of the 17 models. Nest failure was highest at sites within an urban/residential landscape matrix. Reproductive success could be a good indicator of the ecological health of Great Lakes wetlands.
US Fish and Wildlife Service, Fort Snelling, …, 2003
This document is a compilation of biological data and a description of past, present, and likely ... more This document is a compilation of biological data and a description of past, present, and likely future threats to the crystal darter, Crystallaria asprella (Jordan). It does not represent a decision by the U.S. Fish and Wildlife Service (Service) on whether this taxon should be designated as a candidate species for listing as threatened or endangered under the Federal Endangered Species Act. That decision will be made by the Service after reviewing this document; other relevant biological and threat data not included herein; and all relevant laws, regulations, and policies. The result of the decision will be posted on the Service's Region 3 Web site (refer to: http://midwest.fws.gov/eco_serv/endangrd/lists/concern.html). If designated as a candidate species, the taxon will subsequently be added to the Service's candidate species list that is periodically published in the Federal Register and posted on the World Wide Web (refer to: http://endangered.fws.gov/wildlife.html). Even if the taxon does not warrant candidate status it should benefit from the conservation recommendations that are contained in this document. iii
This report was funded in part through grants from the Federal Highway Administration, U.S. Depar... more This report was funded in part through grants from the Federal Highway Administration, U.S. Department of Transportation. The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data, and for the use or adaptation of previously published material, presented herein. The contents do not necessarily reflect the official views or policies of the Arizona Department of Transportation or the Federal Highway Administration, U.S. Department of Transportation. This report does not constitute a standard, specification, or regulation. Trade or manufacturers' names that may appear herein are cited only because they are considered essential to the objectives of the report. The U.S. government and the State of Arizona do not endorse products or manufacturers.
The Soudan Mine at Lake Vermilion – Soudan Underground Mine State Park (LVSUMSP) is the largest k... more The Soudan Mine at Lake Vermilion – Soudan Underground Mine State Park (LVSUMSP) is the largest known bat hibernacula in Minnesota. In 2012, the fungus that causes white-nose syndrome (WNS) was detected in Soudan Underground Mine, and the first bats at this hibernaculum with WNS symptoms were observed during the winter of 2015–2016. The appearance of WNS, observations of dead and dying bats by park staff, and no northern long-eared bats being observed in 2017 winter surveys was cause for concern. In this report we summarize bat call data collected at the Alaska shaft and the No. 8 mine shaft at the Soudan Mine in the spring and fall of 2018. We also include a subset of the bat call data collected in 2017 in this report, as well as data from the 2004 acoustic detector work (Nordquist et al. 2006). A consistent pattern over the past two years of acoustic detection at the LVSUMSP is that the little brown bat is by far the most common species present at the mine shafts. The second most ...
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Papers by David Grandmaison