Author: Andrew Stephen Wiewel
Publisher:
ISBN:
Category : Biodiversity
Languages : en
Pages : 92
Book Description
In the Northern Great Plains, small mammals are the primary prey of medium-sized predators and play an important, though poorly understood, role in predator-prey interactions. By developing inexpensive and rapid sampling methods we can better study small mammal populations at the large spatial and temporal scales necessary for understanding these complex interactions. I compared a track tube survey method with mark-recapture and removal surveys and evaluated a track tube index, defined as the number of track tubes with identifiable tracks during a 4-night survey, as a predictor of small mammal abundance estimates. Removal surveys consistently captured more species, and more individuals of those species, than mark-recapture surveys. Track tube surveys detected species commonly captured during mark-recapture and removal surveys but often failed to detect rare species. The track tube index, although generally correlated with small mammal abundance estimates, was a poor predictor of those estimates due to variation in the form (linear vs. curvilinear) and changes in the slope of the relationship between years. I also investigated small mammal-habitat associations in grassland habitats and developed regression models to predict the relative abundance and diversity of small mammals in upland and wet-meadow habitats (macrohabitat models) and the distribution of small mammal capture locations within these habitats (microhabitat models) as a function of soil moisture and vegetation characteristics. Macrohabitat models explained 25-74% of the variation in the relative abundance of different species and 76% of the variation in species diversity in upland and wet-meadow habitats. Important macrohabitat-level predictive variables included soil moisture, percent forb vegetation, percent litter, and litter depth. Microhabitat models explained 5-15% of the variation in the distribution of small mammal captures within upland and wet-land meadow habitats. Important microhabitat-level predictive variables included soil moisture, Robel visual obstruction, vegetation height, and litter depth. Models that predict small mammal abundance, diversity, and distribution in grassland habitats could be integrated with knowledge about avian nesting and predator foraging activities to better understand the effects of spatial and temporal variability of small mammal prey availability on predator-prey interactions in the Northern Great Plains.
Assessing Small Mammal Abundance and Diversity in North Dakota Grasslands
Author: Andrew Stephen Wiewel
Publisher:
ISBN:
Category : Biodiversity
Languages : en
Pages : 92
Book Description
In the Northern Great Plains, small mammals are the primary prey of medium-sized predators and play an important, though poorly understood, role in predator-prey interactions. By developing inexpensive and rapid sampling methods we can better study small mammal populations at the large spatial and temporal scales necessary for understanding these complex interactions. I compared a track tube survey method with mark-recapture and removal surveys and evaluated a track tube index, defined as the number of track tubes with identifiable tracks during a 4-night survey, as a predictor of small mammal abundance estimates. Removal surveys consistently captured more species, and more individuals of those species, than mark-recapture surveys. Track tube surveys detected species commonly captured during mark-recapture and removal surveys but often failed to detect rare species. The track tube index, although generally correlated with small mammal abundance estimates, was a poor predictor of those estimates due to variation in the form (linear vs. curvilinear) and changes in the slope of the relationship between years. I also investigated small mammal-habitat associations in grassland habitats and developed regression models to predict the relative abundance and diversity of small mammals in upland and wet-meadow habitats (macrohabitat models) and the distribution of small mammal capture locations within these habitats (microhabitat models) as a function of soil moisture and vegetation characteristics. Macrohabitat models explained 25-74% of the variation in the relative abundance of different species and 76% of the variation in species diversity in upland and wet-meadow habitats. Important macrohabitat-level predictive variables included soil moisture, percent forb vegetation, percent litter, and litter depth. Microhabitat models explained 5-15% of the variation in the distribution of small mammal captures within upland and wet-land meadow habitats. Important microhabitat-level predictive variables included soil moisture, Robel visual obstruction, vegetation height, and litter depth. Models that predict small mammal abundance, diversity, and distribution in grassland habitats could be integrated with knowledge about avian nesting and predator foraging activities to better understand the effects of spatial and temporal variability of small mammal prey availability on predator-prey interactions in the Northern Great Plains.
Publisher:
ISBN:
Category : Biodiversity
Languages : en
Pages : 92
Book Description
In the Northern Great Plains, small mammals are the primary prey of medium-sized predators and play an important, though poorly understood, role in predator-prey interactions. By developing inexpensive and rapid sampling methods we can better study small mammal populations at the large spatial and temporal scales necessary for understanding these complex interactions. I compared a track tube survey method with mark-recapture and removal surveys and evaluated a track tube index, defined as the number of track tubes with identifiable tracks during a 4-night survey, as a predictor of small mammal abundance estimates. Removal surveys consistently captured more species, and more individuals of those species, than mark-recapture surveys. Track tube surveys detected species commonly captured during mark-recapture and removal surveys but often failed to detect rare species. The track tube index, although generally correlated with small mammal abundance estimates, was a poor predictor of those estimates due to variation in the form (linear vs. curvilinear) and changes in the slope of the relationship between years. I also investigated small mammal-habitat associations in grassland habitats and developed regression models to predict the relative abundance and diversity of small mammals in upland and wet-meadow habitats (macrohabitat models) and the distribution of small mammal capture locations within these habitats (microhabitat models) as a function of soil moisture and vegetation characteristics. Macrohabitat models explained 25-74% of the variation in the relative abundance of different species and 76% of the variation in species diversity in upland and wet-meadow habitats. Important macrohabitat-level predictive variables included soil moisture, percent forb vegetation, percent litter, and litter depth. Microhabitat models explained 5-15% of the variation in the distribution of small mammal captures within upland and wet-land meadow habitats. Important microhabitat-level predictive variables included soil moisture, Robel visual obstruction, vegetation height, and litter depth. Models that predict small mammal abundance, diversity, and distribution in grassland habitats could be integrated with knowledge about avian nesting and predator foraging activities to better understand the effects of spatial and temporal variability of small mammal prey availability on predator-prey interactions in the Northern Great Plains.
Annual Report
Author: Iowa Cooperative Fish and Wildlife Research Unit
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 50
Book Description
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 50
Book Description
Master's Theses Directories
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 324
Book Description
"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 324
Book Description
"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Effects of Agricultural Conservation Practices on Fish and Wildlife
Author:
Publisher:
ISBN:
Category : Agricultural conservation
Languages : en
Pages : 404
Book Description
"The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes (e.g., water quality improvement), affect various aquatic and terrestrial fauna"--Abstract.
Publisher:
ISBN:
Category : Agricultural conservation
Languages : en
Pages : 404
Book Description
"The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes (e.g., water quality improvement), affect various aquatic and terrestrial fauna"--Abstract.
Assessment of Grassland Ecosystem Conditions in the Southwestern United States
Author:
Publisher:
ISBN:
Category : Ecological disturbances
Languages : en
Pages : 176
Book Description
Publisher:
ISBN:
Category : Ecological disturbances
Languages : en
Pages : 176
Book Description
2002 Small Mammal Inventory at Lawrence Livermore National Laboratory, Site 300
Author: E. West
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
To assist the University of California in obtaining biological assessment information for the ''2004 Environmental Impact Statement for Continued Operation of Lawrence Livermore National Laboratory (LLNL)'', Jones & Stokes conducted an inventory of small mammals in six major vegetation communities at Site 300. These communities were annual grassland, native grassland, oak savanna, riparian corridor, coastal scrub, and seep/spring wetlands. The principal objective of this study was to assess the diversity and abundance of small mammal species in these communities, as well as the current status of any special-status small mammal species found in these communities. Surveys in the native grassland community were conducted before and after a controlled fire management burn of the grasslands to qualitatively evaluate any potential effects of fire on small mammals in the area.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
To assist the University of California in obtaining biological assessment information for the ''2004 Environmental Impact Statement for Continued Operation of Lawrence Livermore National Laboratory (LLNL)'', Jones & Stokes conducted an inventory of small mammals in six major vegetation communities at Site 300. These communities were annual grassland, native grassland, oak savanna, riparian corridor, coastal scrub, and seep/spring wetlands. The principal objective of this study was to assess the diversity and abundance of small mammal species in these communities, as well as the current status of any special-status small mammal species found in these communities. Surveys in the native grassland community were conducted before and after a controlled fire management burn of the grasslands to qualitatively evaluate any potential effects of fire on small mammals in the area.
Assessment of Grassland Ecosystem Conditions in the Southwestern United States: without special title
Author:
Publisher:
ISBN:
Category : Ecological disturbances
Languages : en
Pages : 176
Book Description
Publisher:
ISBN:
Category : Ecological disturbances
Languages : en
Pages : 176
Book Description
The Mammals of North Dakota
Author: Robert W. Seabloom
Publisher: North Dakota State University, Institute for Regional Studies
ISBN: 9780911042740
Category : Mammals
Languages : en
Pages : 461
Book Description
The Mammals of North Dakota is the first comprehensive work on the mammalian fauna of the state since Vernon Bailey¿s early ¿Biological Survey of North Dakota¿ published in 1926. This book is intended to be used by students, professional biologists, and serious naturalists.Detailed accounts of each of the state¿s 86 mammal species include common, scientific, and known Native American names, and sections on Species Description, Distribution, Habitat, Ecology and Behavior, Reproduction, Status and Conservation, and Selected References, Important introductory chapters deal with the mammalian biogeography of the state, the mammalian paleofauna of North Dakota (John Hoganson), and the principal habitats of North Dakota (Bill Jensen). Additional chapters deal with investigating mammals and taxonomic keys for species identification.
Publisher: North Dakota State University, Institute for Regional Studies
ISBN: 9780911042740
Category : Mammals
Languages : en
Pages : 461
Book Description
The Mammals of North Dakota is the first comprehensive work on the mammalian fauna of the state since Vernon Bailey¿s early ¿Biological Survey of North Dakota¿ published in 1926. This book is intended to be used by students, professional biologists, and serious naturalists.Detailed accounts of each of the state¿s 86 mammal species include common, scientific, and known Native American names, and sections on Species Description, Distribution, Habitat, Ecology and Behavior, Reproduction, Status and Conservation, and Selected References, Important introductory chapters deal with the mammalian biogeography of the state, the mammalian paleofauna of North Dakota (John Hoganson), and the principal habitats of North Dakota (Bill Jensen). Additional chapters deal with investigating mammals and taxonomic keys for species identification.
Special Reference Briefs
Commencement
Author: Iowa State University
Publisher:
ISBN:
Category : Commencement ceremonies
Languages : en
Pages : 562
Book Description
Publisher:
ISBN:
Category : Commencement ceremonies
Languages : en
Pages : 562
Book Description