Catalogue Search | MBRL
Are you sure you want to remove the book from the shelf?
{{itemTitle}}
203
result(s) for
"Roth, Ed"
Sort by:
Spatial Ecology of a Cottonmouth (Agkistrodon piscivorus) Population in East Texas
Radio-telemetry was used to study spatial ecology of a Cottonmouth (Agkistrodon piscivorus) population in eastern Texas. I examined effects of sex, reproductive state, and body size on spatial use within a riparian habitat. Snakes inhabited a relatively linear environment, restricting movements to the vicinity of the stream. Males occupied larger home ranges than both gravid and nongravid females. Gravid females exhibited marginally larger home ranges than nongravid females, but any effects attributable to reproductive state were relatively small when compared to sex differences in spatial use. Body size was positively correlated with home-range size but did not account for observed home-range differences among population subunits.
Journal Article
Spatial Ecology of a Cottonmouth (Agkistrodon Piscivorus) Population in East Texas
Radio-telemetry was used to study spatial ecology of a Cottonmouth (Agkistrodon piscivorus) population in eastern Texas. I examined effects of sex, reproductive state, and body size on spatial use within a riparian habitat. Snakes inhabited a relatively linear environment, restricting movements to the vicinity of the stream. Males occupied larger home ranges than both gravid and nongravid females. Gravid females exhibited marginally larger home ranges than nongravid females, but any effects attributable to reproductive state were relatively small when compared to sex differences in spatial use. Body size was positively correlated with home-range size but did not account for observed home-range differences among population subunits.
Journal Article
Relative Medial and Dorsal Cortex Volume in Relation to Sex Differences in Spatial Ecology of a Snake Population
In non-avian reptiles the medial and dorsal cortices are putative homologues of the hippocampal formation in mammals and birds. Studies on mammals and birds commonly report neuro-ecological correlations between hippocampal volume and aspects of spatial ecology. We examined the relationship between putative homologous cortical volumes and spatial use in a population of the squamate reptile, Agkistrodon piscivorus, that exhibits sex differences in spatial use. Do male A. piscivorus that inhabit larger home ranges than females also have larger putative hippocampal volumes? Male and female brains were sectioned and digitized to quantify regional cortical volumes. Although sex differences in dorsal cortex volume were not observed, males had a significantly larger medial cortex relative to telencephalon volume. Similar to studies on mammals and birds, relative hippocampal or medial cortex volume was positively correlated with patterns of spatial use. We demonstrate volumetric sex differences within a reptilian putative hippocampal homologue.
Journal Article
Buffer Zone Applications in Snake Ecology: a Case Study Using Cottonmouths (Agkistrodon piscivorus)
Riparian areas alone are often insufficient for preservation of riparian taxa. Case studies on many vertebrate taxa have addressed the importance of establishing buffer zones around riparian habitats. The goal of this investigation was to build upon previous studies and assess the relative importance of buffer zones to riparian snakes. A case study was conducted on a Cottonmouth (Agkistrodon piscivorus leucostoma) population within a stream /riparian habitat. Using radio-telemetry, I examined the spatial distribution of males, gravid females, and non-gravid females. Although 83% of all snake observations were within 10 m of the stream, population subunits exhibited different patterns of spatial use. Gravid females provided most of the distant observations, inhabiting the surrounding terrestrial habitat up to 94 m from the shoreline. Thus, disturbances to terrestrial areas surrounding the riparian habitat would likely have the greatest impact on gravid females. These results further establish a need for buffer zones around riparian ecosystems, and highlight the importance of considering spatial use differences between population subunits when outlining buffer zone applications for conservation management.
Journal Article
Buffer Zone Applications in Snake Ecology: a Case Study Using Cottonmouths (Agkistrodon piscivorus)
Riparian areas alone are often insufficient for preservation of riparian taxa. Case studies on many vertebrate taxa have addressed the importance of establishing buffer zones around riparian habitats. The goal of this investigation was to build upon previous studies and assess the relative importance of buffer zones to riparian snakes. A case study was conducted on a Cottonmouth (Agkistrodon piscivorus leucostoma) population within a stream/riparian habitat. Using radio-telemetry, I examined the spatial distribution of males, gravid females, and non-gravid females. Although 83% of all snake observations were within 10 m of the stream, population subunits exhibited different patterns of spatial use. Gravid females provided most of the distant observations, inhabiting the surrounding terrestrial habitat up to 94 m from the shoreline. Thus, disturbances to terrestrial areas surrounding the riparian habitat would likely have the greatest impact on gravid females. These results further establish a need for buffer zones around riparian ecosystems, and highlight the importance of considering spatial use differences between population subunits when outlining buffer zone applications for conservation management.
Journal Article
Drinking Coke isn't the problem
Check: We all indulged. [...]adults (parents and to some extent the school systems) get back to stressing physical activity, nothing will solve the problem of obese children.
Newspaper Article
HARDWARE ESSENTIALS IN THE PERFECT SMB NETWORK
By far, the most common media used in SMB networking is unshielded twisted pair (UTP) cabling. This cable consists of eight individual wires, twisted into pairs to cancel signal degradation that radio frequencies or electromagnetic interference might cause. Each end of a UTP networking cable is usually terminated with an RJ-45 connector, which is commonly used for NIC and switch connections. You'll find many grades, or categories, of UTP cabling.
Magazine Article
10 Ways to Manage Desktops with Group Policy
Software installation and maintenance are part of Microsoft's IntelliMirror functionality, and you can control both with Group Policy. You can configure settings within GPE to assign or publish an application to users or computers. Software installation and maintenance functionality works with programs that use Windows Installer technology (i.e., .msi files).
Magazine Article
Spyware Hunters
In this comparative review, I take a look at five enterprise-ready antispyware tools-Computer Associates' (CA'S) eTrust PestPatrol Anti-Spyware Corporate Edition, FutureSoft's DynaComm i:scan, Omniquad's AntiSpy Enterprise Edition, Sunbelt Software's CounterSpy Enterprise, and Tenebril's SpyCatcher Enterprise. I was eager for the opportunity to review these products, which have been-in many cases-a long time coming.
Magazine Article