• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Ecogeographical Variation in Skull Shape of South
Ecogeographical Variation in Skull Shape of South

... pffiffiffiffiffiffiffiffiffi arcsine BSD was between 2 and 5.4, than we could consider the pair of species as potential competitors directly influencing each other via interspecific killing (see Donadio and Buskirk 2006 for more details). For example, at locality X we recorded a skull of C. thous. In this locality th ...
book of abstracts as PDF
book of abstracts as PDF

... field efforts and multiple years before they can provide reliable estimates of risks of extinction/invasion. Unfortunately, their need for high temporal replication is at odds with urgent societal needs for such predictions. Using the COMPADRE database, I will show that a few, easily measurable life ...
14.1 Habitat And Niche
14.1 Habitat And Niche

... exclusion principle does not apply? Expleain. • The competitive exclusion principle only applies if the 2 species live in the same habitat AND occupy the same niche • A niche includes – Food type – Abiotic conditions – Behavior • These two species use the same food resource but occupy different nich ...
Heathlands confronting global change: drivers of biodiversity loss
Heathlands confronting global change: drivers of biodiversity loss

... † Conclusions Habitat loss and fragmentation affect sensitive species and ecosystem functions. The nature of the surrounding area will condition the quality of the heathland remnants by, for example, propagule pressure from invasive species. The dominant ericoid shrubs can be out-competed by vigorou ...
Coping with Change: A Closer Look at the Underlying Attributes of
Coping with Change: A Closer Look at the Underlying Attributes of

... paper. To most scientists, the process of change is mainly, if not exclusively interesting because of the response it incites in natural systems. This response is first given on the level of an individual entity [19], before causing more complicated and interactive patterns [20,21], whether the resp ...
Threats to Biodiversity - Wildlife Ecology and Conservation
Threats to Biodiversity - Wildlife Ecology and Conservation

... marine, and freshwater—bear our imprint; our pollution spans the globe, our fisheries extend throughout the world’s oceans, and our feet tread across almost every surface on Earth. By many estimates, we use substantial and increasing fractions of Earth’s primary productivity (Vitousek et al. 1986; P ...
Community structure and composition in response to climate change
Community structure and composition in response to climate change

... plays an important role in regulating the response of community composition to warming (Sternberg et al., 1999; Walker et al., 2006). Hence, elucidating the direct and indirect effects of warming on community will facilitate the mechanistic understanding of plant community structure and composition ...
The ecological consequences of habitat fragmentation
The ecological consequences of habitat fragmentation

... beyond the probabilistic arrival of colonists across an inhospitable matrix and no internal patch dynamics beyond probabilistic extinction rates, and is ‘neutral’ to species identities or functional traits. Much has been made about the lack of relevance of habitat fragmentation to landscape ecology ...
tests for similarity and convergence of finch
tests for similarity and convergence of finch

... Bourliere 1983). The habitat classes that I used are quite distinct (Table 1), and while sites within each habitat type are not identical, they should be much more similar to each other than to sites in other habitats. All but the weakest forms of convergence should therefore be detectable in the pr ...
The Landscape Ecology of Invasive Spread
The Landscape Ecology of Invasive Spread

... The impact of invasive species on human economic systems has been estimated at millions to billions of dollars annually ( Pimentel et al. 2000 ), but the magnitude of the biotic costs to ecological systems is just now being assessed (e.g., Vitousek et al. 1996; Mooney & Hobbs 2000). The title of a r ...
(2016). Exotics Exhibit More Evolutionary History Than Natives
(2016). Exotics Exhibit More Evolutionary History Than Natives

... Exotics exhibit more evolutionary history than natives   123 INTRODUCTION In the past, the rate at which species colonized new areas, such as distant islands, was relatively slow, and long‐distance dispersal events were rare. As a result, species within biogeographic regions shared much of their ev ...
Effects of habitat loss, habitat fragmentation, and isolation on the
Effects of habitat loss, habitat fragmentation, and isolation on the

... L.), in which they play an important role in keeping aphid densities low (Obrycki & Kring, 1998; Dixon, 2000). In fragmented agricultural landscapes, aphids may reach high densities because of the delay in the arrival of coccinellids to fragments and prey patches (Kareiva, 1987; With et al., 2002). ...
Extinctions in Ecological Communities –  Alva Curtsdotter
Extinctions in Ecological Communities – Alva Curtsdotter

... models to describe ecological communities and computer simulations to observe the response of these communities to perturbation. When a perturbation is severe enough, a species will be driven to extinction. The loss of a species from a system is in itself a large perturbation, and may result in furt ...
effects of air temperature, altitude and local - CREA Mont
effects of air temperature, altitude and local - CREA Mont

... temporal variation in thermal sum, defined as the sum of daily mean temperatures above a certain threshold temperature until the date of the phenological event (in Degree-Days (°d)). We chose 0 °C as base temperature because of the geographic location of the study area. Indeed, daily mean temperatur ...
NSW Invasive Species Plan 2008-2015
NSW Invasive Species Plan 2008-2015

... In a hotter and drier climate, the distribution of some species may contract in some areas while expanding into other areas. The range of some warm climate species may also increase, with other cold climate species decreasing their range. Invasive species are often better colonisers of disturbed eco ...
SudingMS_final_1007_RYS
SudingMS_final_1007_RYS

... Werner 1983) and for functional traits (Goldberg 1990), it has been applied to ecosystem Although we discuss functional classification in terms of species and the grouping of species, it also applies to groupings at other levels of organization, such as genotypes or phenotypes of individuals acclima ...
Extinction thresholds: insights from simple models
Extinction thresholds: insights from simple models

... different version of Eq. 5 which included territoriality and life history. His model was applied to the case of the northern spotted owl (Strix occidentalis caurina). Equation 5 is a very crude description of a real situation, and colonization and extinction rates may be difficult to estimate. But n ...
Predicting changes in the distribution and abundance of species
Predicting changes in the distribution and abundance of species

... annual vital rates given the changing drivers and intraspecific density, use the vital rates to update population sizes at each location, add stochastic dispersal and repeat until we reach the desired future time horizon, and then use the predicted abundance to identify the distribution (Fig. 1, arr ...
Full-Text PDF
Full-Text PDF

... biotic interactions of species and differential competition and dispersal abilities in communities may affect the realization of range shift potentials as much as the abiotic changes, and these too need to be included with modelling of climate change impacts [6±12]. While many of the ecological resp ...
Habitat Selection by Two Competing Species in a Two
Habitat Selection by Two Competing Species in a Two

... shape of isolegs from the assumption that both species follow IFD across the habitats. We study both the situation in which both species show initial preference for the same part of the environment (Abramsky et al. 1990; Ziv et al. 1995) and the situation in which both species prefer different habit ...
Crassostrea gigas - Pacific oyster UK NON
Crassostrea gigas - Pacific oyster UK NON

... et al. ,1994). A small founder generation has to reach a certain size before a fast growth is possible. However, in the case of the Pacific oyster, it is likely that the recent spread is facilitated by changing environmental conditions, especially an increase in summer temperatures (Nimpis, 2002). T ...
EU NON-NATIVE SPECIES RISK ANALYSIS – RISK ASSESSMENT
EU NON-NATIVE SPECIES RISK ANALYSIS – RISK ASSESSMENT

... 1.5. How likely is the organism to survive during passage along the pathway (excluding management practices that would kill the organism)? Subnote: In your comment consider whether the organism could multiply along the pathway. 1.6. How likely is the organism to survive existing management practices ...
Matters of National Environmental Significance
Matters of National Environmental Significance

... result of natural or deliberate events (Section 4.2.11). Controlled burning conducted as part of pastoral activities will not be conducted on the same frequency or extent within the Mine Site Development Envelope as a result of implementation of the project. Due to the increased presence of people a ...
expansion under climate change Non-climatic
expansion under climate change Non-climatic

... Climate change promises to reshuffle species’ distributions across the earth [1,2], but predicting the outcome presents a grand scientific challenge given the many spatially correlated factors involved. For plant species, climate, soil properties and biotic interactions combine to determine geograph ...
Occupancy Modeling
Occupancy Modeling

... of occurrence: the set of grid cells that contain at least one individual when a grid is superimposed on the area containing all individuals of a species (but may contain cells with no individuals) ...
< 1 2 3 4 5 6 7 8 9 10 ... 38 >

Assisted colonization

Assisted colonization, also known as assisted migration or managed relocation, is the act of deliberately helping plant and animal species colonize new habitats when driven out of their historical habitats due to rapid environmental change, especially climate change. All species have some natural capacity to disperse into new habitats and adapt to change, but ongoing climate change is so rapid that many species are unable to keep pace naturally. In order to prevent extinctions, some scientists and practitioners are considering assisting the dispersal of species that have poor natural dispersal ability. This idea has sparked intense debate over the potential benefits of assisted colonization, which include avoiding many species extinctions, and the risks, which include accidentally introducing new invasive species. Although the debate remains primarily conceptual with few real-world applications, scientists and land managers have already begun to consider several specific assisted colonization projects.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report