Book Chapters
Science Quality and Integrity
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Coluber constrictor-North American racer
No abstract available.
Authors
Trevor Persons, Charles A. Drost
Introduction to life cycles, taxonomy, distribution and basic research techniques
Avian haemosporidian parasites are a closely related group of apicomplexan parasites with important similarities in their life cycles, development, physiology, and reproduction. Current phylogenies based on mitochondrial and nuclear genes reflect more traditional attempts to classify these organisms based on life history characteristics and morphology, but limited sampling from poorly characterize
Authors
Gediminas Valkiunas, Carter T. Atkinson
Modeling population dynamics with count data
In this chapter, we describe models of open populations that are subject to change over time due to additions and subtractions. Additions may be in the form of recruitment and immigration, and subtractions may be in the form of mortality, emigration, or both. Conceptually, these models are described by the Birth-Immigration-Death-Emigration (BIDE) model of population dynamics (Conroy and Carroll,
Authors
Marc Kery, Andy Royle
Modeling false positives
Many of the models we are concerned with included explicit descriptions of false negative errors. However, false positive errors can also be commin in practice, especially in citizen science applications where observer skill is highly variable. In addition, new methods which determine detection based on statistical classification or machine learning methods are also prone to false positive errors
Authors
Marc Kery, Andy Royle
Modeling population dynamics with multinomial count data
No abstract available.
Authors
Andy Royle, Marc Kery
Variables affecting resource subsidies from streams and rivers to land and their susceptibility to global change stressors
Stream and river ecosystems provide subsidies of emergent adult aquatic insects and other resources to terrestrial food webs, and this lotic–land subsidy has garnered much attention in recent research. Here, we critically examine a list of biotic and abiotic variables—including productivity, dominant taxa, geomorphology, and weather—that should be important in affecting the nature of these subsidy
Authors
Jeffrey Muehlbauer, Stefano Larsen, Micael Jonsson, Erik J.S. Emilson
Metamorphosis and the impact of contaminants on ecological subsidies
Animals with complex life histories such as aquatic insects and amphibians link freshwater and terrestrial ecosystems when they transition from water to land during development. This transition requires metamorphosis from juvenile to adult life stages. Metamorphosis is a stressful and ecologically sensitive life history event. Exposure to contaminants during juvenile development (before or during
Authors
Jeff Wesner, Johanna M. Kraus, Brianna L. Henry, Jacob Kerby
Introduction: Ecological subsidies as a framework for understanding contaminant fate, exposure, and effects at the land-water interface
Ecologists have long recognized that ecological subsidies (the flow of organic matter, nutrients, and organisms between ecosystems) can strongly affect ecosystem processes and community structure in the recipient ecosystem. Animal movements, organic matter flows, and food web dynamics between linked aquatic and terrestrial systems can also influence contaminant fate, exposure, and effects at the l
Authors
David Walters, Johanna M. Kraus, Marc A. Mills
Practical considerations for the incorporation of insect-mediated contaminant flux into ecological risk assessments
Insect-mediated contaminant flux is truly an interdisciplinary concept that merges ideas from many technical areas of science (e.g., environmental chemistry, landscape ecology, and entomology). This chapter introduces risk assessors to this emerging and ecologically relevant concept by distilling the main mechanisms that drive insect-mediated contaminant flux and integrating them together so that
Authors
Ryan R. Otter, Gale B. Beaubien, Connor I. Olson, David Walters, Marc A. Mills
Synthesis: A framework for predicting the dark side of ecological subsidies
In this chapter, we synthesize the state of the science regarding ecological subsidies and contaminants at the land-water interface and suggest research and management approaches for linked freshwater-terrestrial ecosystems. Specifically, we focus on movements of animals with complex life histories and the detrital inputs associated with animal and plant matter delivered to freshwaters. We present
Authors
Johanna M. Kraus, Jeff Wessner, David Walters