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Changes in Sin Nombre Virus Antibody Prevalence in Deer Mice
Changes in Sin Nombre Virus Antibody Prevalence in Deer Mice

... ship between mouse density and seroprevalence, but not a negative one. In the summer, sagebrush cover and mouse density were still positively related, but seroprevalence was similar across different population densities; a similar relationship was also observed by Graham and Chomel (1997). Frequency ...
IDENTIFICATION OF IMPORTANT HABITATS IN THE LOWER
IDENTIFICATION OF IMPORTANT HABITATS IN THE LOWER

... In accordance with the focus of the National Estuary Program, evaluation species were those predominantly associated with wetland and coastal features. The FWS has particular interest in migratory wildlife, wetlands, anadromous fishes, and endangered species. The species for which habitats were iden ...
Ecosystem management and the conservation of caribou habitat in
Ecosystem management and the conservation of caribou habitat in

... management plans that perpetuate natural wildfire Wood (1996). These caribou usually live in alpine regimes (D. Cichowski, pers. comm.). In areas outhabitats during the summer months but use lower elevation lodgepole pine (Pinus contorta) forests for side of parks, forest age class constraints have ...
Habitat degradation and fishing effects on the size structure of coral
Habitat degradation and fishing effects on the size structure of coral

... disease (Harvell et al. 1999, 2002, Bruno et al. 2007) and severe storms (Emanuel 2005, Webster et al. 2005), while beyond 2050 changes to water chemistry will inhibit growth of corals and reef accretion (Kleypas et al. 1999, Hoegh-Guldberg et al. 2007). Most coral reef fish have a close association ...
Characterizing Nekton use of the Largest Unfished Oyster Reef in
Characterizing Nekton use of the Largest Unfished Oyster Reef in

... habitats, collection limitation resulting from its large vertical relief (>1 m) and complex 3-dimensional structure, or habitat selection resulting from water depth. Because the majority of crustaceans and resident and transient fish were observed within the marsh edge and nonvegetated shallow habita ...
Species Profile - Atlantic States Marine Fisheries Commission
Species Profile - Atlantic States Marine Fisheries Commission

... World War II. The estimated East Coast catch in 1896 was 50 million pounds, but by the 1950s landings had declined to approximately 10 million pounds. Fisheries included in-river fisheries targeting river-specific stocks and ocean fisheries targeting mixed stocks of schooling shad. In-river landings ...
Tanager - Cornell Lab of Ornithology
Tanager - Cornell Lab of Ornithology

... enormous alterations to their habitats. Several species, such as the Wood Thrush and Cerulean Warbler, are declining, but it’s not too late to begin implementing ...
3 Biological Resources Limiting Factors
3 Biological Resources Limiting Factors

... impacts to aquatic habitats in terms of the degree to which altered ecosystem components impact habitat quality or quantity for focal fish species in the subbasins. The technical teams relied on existing information and professional judgment to make these assessments. Watershed level assessments of ...
Drift fences, coverboards, and other traps
Drift fences, coverboards, and other traps

... 13.2.3 What can passive traps tell you? What can they not tell you? Passive traps, especially when used in conjunction with drift fences, have proved highly effective for determining the distribution and abundance of amphibians both spatially and temporally. Many examples exist in which drift-fence ...
Stable Isotope Analysis Reveals That Agricultural Habitat Provides
Stable Isotope Analysis Reveals That Agricultural Habitat Provides

... Conservation of increasingly threatened coastal habitats has been identified as a key strategy for stemming the population declines currently seen in many species of North American shorebirds (Brown et al. 2001, Donaldson et al. 2001). In shorebirds, most adult mortality takes place during migration ...
Frequently Asked Questions About Ecological - CLU-IN
Frequently Asked Questions About Ecological - CLU-IN

... benefits will be strongly influenced by the surrounding area. Ecological revitalization can most easily be incorporated for a site that is already located within a larger beneficial habitat or ecosystem. Sites that are somewhat isolated, but are along a corridor or riparian or transition zone and li ...
Part 3 Designing and Implementing Ecosystem Connectivity in the
Part 3 Designing and Implementing Ecosystem Connectivity in the

... services they provide. Science is showing that the extent, quality and arrangement of retained natural areas affect the health of individual ecosystems, and the extent of available ecosystem services. Historically, natural areas were plentiful and supported surrounding ecosystems and species in the ...
Growth potential and predation risk drive ontogenetic shifts among
Growth potential and predation risk drive ontogenetic shifts among

... Nagelkerken 2009). Their high structural complexity provides advantages in terms of higher food abundances and increased survival from predation (Laegdsgaard & Johnson 2001). However, recent studies have suggested that food is not necessarily higher in nurseries than in adult habitats, and fish may ...
penguins - Cloudfront.net
penguins - Cloudfront.net

... • The penguin species with the highest population is the Macaroni penguin with 11,654,000 pairs. The species with the lowest population is the endangered Galapagos penguin with between 6,000-15,000 Penguins. ...
MS Word Document - 2.1 MB - Department of Environment, Land
MS Word Document - 2.1 MB - Department of Environment, Land

... Figure 2. Layout of the sampling design for vegetation structure data collection in the pre- and immediate post-burn period. Red dotes are the sampling points. ...................................................................... 13 Figure 3. Y-shaped design for vegetation structure data collection ...
The roles of the Moran effect and dispersal in synchronizing
The roles of the Moran effect and dispersal in synchronizing

... the theory of weakly coupled oscillators (Kuramoto, 1984) to derive a phase model from our original population model. The phase model has fewer equations and is therefore easier to analyze and measure synchrony with than the population model. This derivation and the study of a phase model from a sys ...
Ungulates in western coniferous forests: habitat relationships
Ungulates in western coniferous forests: habitat relationships

... lower feeding frequencies, longer forage retention times, and can subsist on forages of lower quality than can smaller-bodied ruminants (Hoffman 1985, Putman 1988). In addition, they have lower metabolic rates than smaller ruminants (Kleiber 1961). As such, these bulk-feeders have the luxury of inge ...
Insect herbivory in an experimental agroecosystem: the relative
Insect herbivory in an experimental agroecosystem: the relative

... (or subplots) of red clover. The clover subplots varied in fragmentation (continuous or isolated by 2 m), habitat area (4 or 16 m2), and matrix type (grass or bare ground) according to a fully factorial design (Fig. 1). Each combination of fragmentation, area, and matrix was originally replicated in ...
Important Habitats in the Lower Casco Bay Watershed
Important Habitats in the Lower Casco Bay Watershed

... habitats in the area. This report focuses on the latter aspect, offering maps of known and likely habitats for an assortment of species and species groups significant in the Gulf of Maine, and particularly in Casco Bay. The final chapter lists funding opportunities which local conservation interests ...
Ecological niche of plant pathogens
Ecological niche of plant pathogens

... the niche as species habitat requirements and the fact that niche is a property of the biotic community. Later niche formalization, the niche hypervolume introduced the concept of niche variables and axes. Each dimension of the hypevolume is a variable and variables are interrelated to match species ...
Chapter 10: Protected Matters under the EPBC Act
Chapter 10: Protected Matters under the EPBC Act

... Survey was conducted during daylight hours, with three to five ecologists and rangers on foot traversing the disturbance corridor, approximately 5-10 m apart and scanning the ground for signs of the threatened species such as scat, burrows, diggings and/or latrines. The total length of corridor surv ...
Nuttall`s Cottontail (Sylvilagus nuttallii nuttallii)
Nuttall`s Cottontail (Sylvilagus nuttallii nuttallii)

... and the Eastern Cottontail (Sylvilagus floridanus) were sister taxa forming an unresolved clade (Ruedas 1998). But, Halanych and Robinson (1997) using mitochondrial DNA (12S rRNA gene) demonstrated that S. nuttallii was most closely related to the Desert Cottontail (Sylvilagus audubonii) with a sequ ...
PETITION TO LIST THE ACUNA CACTUS
PETITION TO LIST THE ACUNA CACTUS

... implemented on the ground, nor are they being monitored. Three sites have had little to no survey work done and are only known to contain a few individuals at this time. Two of these, on lands administered by the Bureau of Land Management, were located as a result of survey work for desert tortoises ...
Management Plan Supplement - Yakima/Klickitat Fisheries Project
Management Plan Supplement - Yakima/Klickitat Fisheries Project

... abundance. Historically, 500,000-900,000 adult salmon and steelhead returned to the Yakima Subbasin annually. This total was comprised of spring, summer, and fall chinook, coho, sockeye, and steelhead. Summer chinook, sockeye, and native coho are extinct in the subbasin. Coho currently found in the ...
Small bugs with a big impact: linking plankton ecology with
Small bugs with a big impact: linking plankton ecology with

... for extrapolating our understanding of plankton ecology to predicting large-scale features and processes? The behavior and physiology of individual planktonic organisms are adapted to the environment in which plankton live and their microscopic size places constraints on their biology. These adaptat ...
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Source–sink dynamics

Source–sink dynamics is a theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms.Since quality is likely to vary among patches of habitat, it is important to consider how a low quality patch might affect a population. In this model, organisms occupy two patches of habitat. One patch, the source, is a high quality habitat that on average allows the population to increase. The second patch, the sink, is very low quality habitat that, on its own, would not be able to support a population. However, if the excess of individuals produced in the source frequently moves to the sink, the sink population can persist indefinitely. Organisms are generally assumed to be able to distinguish between high and low quality habitat, and to prefer high quality habitat. However, ecological trap theory describes the reasons why organisms may actually prefer sink patches over source patches. Finally, the source-sink model implies that some habitat patches may be more important to the long-term survival of the population, and considering the presence of source-sink dynamics will help inform conservation decisions.
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