Download or read book Population Dynamics of Sacramento Valley Muskrats written by Dennis J. Messa and published by . This book was released on 1981 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book California Riparian Systems written by Richard E. Warner and published by Univ of California Press. This book was released on 2023-11-15 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Movements and Population Dynamics of Muskrats in Missouri Farm Ponds and Streams written by Charles E. Shanks and published by . This book was released on 1951 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Environmental Document written by and published by . This book was released on 1995 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sacramento Valley Muskrat Survey written by California. Wildlife Management Branch and published by . This book was released on 1978 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sacramento Valley Muskrat Survey 1978 written by Dennis J. Messa and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Muskrat Populations written by Paul Lester Errington and published by . This book was released on 1963 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Dynamics of Muskrats in Managed Marshes at Delta Manitoba written by Darryl Wayne Kroeker and published by . This book was released on 1988 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Muskrats (Ondatra zibethicus) are an important component of wetland ecosystems, as well as being an economically important furbearer.Muskrats are the only significant resident vertebrate consumer of emergent vegetation in many North American wetlands. The large proportion of vegetation which they waste plays an important role in decomposition. Decomposing vegetation provides substrate for bacteria and fungi, which, in turn, feed increased populations of invertebrates (Godshalk and Wetzel 1978). Muskrat foraging and house-building improves interspersion in dense stands of emergent vegetation (Weller and Spatcher 1965, Weller and Fredrickson 1974) which increases invertebrate population levels and results in richer communities of invertebrates (Whitman 1974, Voigts 1976). Spatial interspersion of water and vegetation and increased invertebrate biomass in turn result in greater avian abundance, diversity, and waterfowl use in marshes (Weller and Spatcher 1965, Weller and Fredrickson 197.
Download or read book Furbearing and Nongame Mammal Hunting and Trapping written by California. Department of Fish and Game and published by . This book was released on 1995 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography written by California. Department of Fish and Game. Nongame Bird and Mammal Section and published by . This book was released on 1966 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Dynamics of the Round tailed Muskrat Neofiber Alleni in Florida Sugarcane written by Lynn Walsh Lefebvre and published by . This book was released on 1982 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The round-tailed muskrat (Neofiber alleni) is one of several species of rodents reported to damage sugarcane in south Florida. Information on this microtine rodent's population dynamics was needed to develop appropriate control measures and to determine if and when they should be applied. Neofiber live in burrow systems in sugarcane fields, and these systems can be readily located in recently harvested fields. Snaptrapping, livetrapping, and radio telemetry were used to study methods of population estimation, patterns of burrow system occupancy, reproduction, survival, and interburrow system movements. The sum of burrow system distances across rows, number of burrow systems trapped, burrow system density (high or low), number of burrows plugged, and number of burrows opened after 48 h were the best predictors of the number of Neofiber captured per field, accounting for up to 94 percent of the variation in observed captures. At a given time, average burrow system occupancy was less than 2 individuals. Single adult males or females, male/ female pairs, a female with 1 or 2 young, or 1 or 2 subadults were the most common system occupants. Extended families were encountered occasionally. Adult males frequently moved among neighboring burrow systems, presumably looking for mates. Productivity (number embryos + number juveniles per adult female) tended to be lower or at least not greater in fields with low burrow system densities (10) than in high density fields (/=15) burrow systems. The grower whose fields were studied had recently initiated a 3-year rotation, and Neofiber may be removed from fields before attaining their maximum reproductive rate. Neofiber reproductive rate or survival of young, or both, were low between May and November, the period of crop maturation. The study area's Neofiber population appears to have declined in recent years, possibly as a result of the shorter crop rotation, replanting by blocks of fields, and the introduction of mechanical harvesting. Control measures to reduce the population in this area are not warranted at this time. Surveys for the presence of Neofiber burrow systems 1 to 2 months after fields are harvested are recommended. High local populations could be effectively reduced by snaptrapping.
Download or read book Nongame and Furbearing Mammal Hunting and Trapping written by California. Department of Fish and Game and published by . This book was released on 1990 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bird and Mammal Conservation Program Bibliography 1966 1996 written by and published by . This book was released on 1997 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecology of Reproduction in Wild and Domestic Mammals written by R.M. Sadler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: 49 about six months ... to well over a year. If there is only one part of the year that is favourable, such as spring and early summer in the temperate climates, then each species must make an evolutionary choice, so to speak, as to which parts of the reproductive cycle - conception, gestation, lactation or weanin- must be protected and which can come in less favourable times of the year. The rhesus and langur monkeys of northern India give birth during the time of year when temperatures are hottest and wells and tanks are often dry. However, gestation and the later months oflactation come during the monsoon season when food and water are abundant. In contrast the east African baboons give birth at the beginning of the small rains, and gestation and the late part of lactation occur during the six months dry season. Whether any pattern of relationship will be found to hold true for other species of primates is still not clear. It may be that a wide variety of patterns have evolved depending on the lengths of gestation and lactation and the particular ecological complex in which each species or even subspecies lives' (pages 503, 504).
Download or read book Bibliography 1966 1988 written by and published by . This book was released on 1989 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Literature Review and Evaluation of Waterfowl Ecology and Management in North America written by Thomas E. Morse and published by . This book was released on 1975 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report PSW written by and published by . This book was released on 1978 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
