Temporal changes in a Chihuahuan Desert rodent community
... termined by processes operating within local areas, and to what extent is it affected by physical variables and movement of organisms occurring at larger spatial scales? On what spatial and temporal scales and between what kinds of organisms do coevolutionary processes influence community organizati ...
... termined by processes operating within local areas, and to what extent is it affected by physical variables and movement of organisms occurring at larger spatial scales? On what spatial and temporal scales and between what kinds of organisms do coevolutionary processes influence community organizati ...
Lepomis cyanellus (Rafinesque, 1819)
... 1988) and some states of the USA (CABI, 2013). In these areas it can overcrowd and stunt the growth of other fish, including native sunfish species, by competing for food and habitat. It may even cause displacement and extinction of native fish. The invasion success of L. macrochirus in Lake Biwa in ...
... 1988) and some states of the USA (CABI, 2013). In these areas it can overcrowd and stunt the growth of other fish, including native sunfish species, by competing for food and habitat. It may even cause displacement and extinction of native fish. The invasion success of L. macrochirus in Lake Biwa in ...
Limits to evolution at range margins: when and why does adaptation
... In the Kirkpatrick and Barton model [18], genetic variance is assumed to be constant across the entire range. In reality, however, the amount of segregating variance evolves under the joint effects of migration, mutation and selection. Importantly, migration among populations with different trait me ...
... In the Kirkpatrick and Barton model [18], genetic variance is assumed to be constant across the entire range. In reality, however, the amount of segregating variance evolves under the joint effects of migration, mutation and selection. Importantly, migration among populations with different trait me ...
The role of abiotic and biotic factors in determining coexistence of
... of oviposition strategy, may compete with one another for access to oviposition sites (i.e. flowers) or seeds. One of the signatures of competition would be the geographic exclusion of pollinator species from different yucca species by a resident pollinator. Evaluating this is somewhat complicated i ...
... of oviposition strategy, may compete with one another for access to oviposition sites (i.e. flowers) or seeds. One of the signatures of competition would be the geographic exclusion of pollinator species from different yucca species by a resident pollinator. Evaluating this is somewhat complicated i ...
Biodiversity: Structure and Function
... ecosystem size in a region, reducing the size of particular habitats, and increasing isolation between habitat fragments. The effects of fragmentation are species-specific, with species possessing low dispersal potential and establishment (or recruiting capacity) effectiveness, and species requiring ...
... ecosystem size in a region, reducing the size of particular habitats, and increasing isolation between habitat fragments. The effects of fragmentation are species-specific, with species possessing low dispersal potential and establishment (or recruiting capacity) effectiveness, and species requiring ...
pdf
... Etymology. The specific name refers to the type locality, Shizugawa Bay, Sanriku Coast, Japan. ACKNOWLEDGEMENT Remarks. Pista shizugawaensis n. sp. can be distinguished from other species of the genus Pista by the presence of lateral lobes on chaetigers 5 and 6. While these lobes are small, they are ...
... Etymology. The specific name refers to the type locality, Shizugawa Bay, Sanriku Coast, Japan. ACKNOWLEDGEMENT Remarks. Pista shizugawaensis n. sp. can be distinguished from other species of the genus Pista by the presence of lateral lobes on chaetigers 5 and 6. While these lobes are small, they are ...
Gunārs Pētersons. Distribution patterns and seasonal migration of bat
... 1977 was carried out by Ināra Buša (Буша 1980), summarized data both from her own studies and those of other researchers, mainly based on checks of winter and summer roosts. This study determined 12 bat species for the Latvian fauna. The use of ultrasound detectors for detecting and identifying of f ...
... 1977 was carried out by Ināra Buša (Буша 1980), summarized data both from her own studies and those of other researchers, mainly based on checks of winter and summer roosts. This study determined 12 bat species for the Latvian fauna. The use of ultrasound detectors for detecting and identifying of f ...
Nearshore fish assemblages associated with introduced predatory
... Received 24 December 2010; Revised 19 April 2011; Accepted 24 April 2011 KEY WORDS: ...
... Received 24 December 2010; Revised 19 April 2011; Accepted 24 April 2011 KEY WORDS: ...
chapter 9 biological invasions and the homogenization of faunas
... examples only recently coming to light thanks to the power of molecular analyses to locate the evolutionary origins of now very widespread species (e.g. Wares et al., 2002). There is ample historical evidence that the number of species that were moved out of their native ranges and introduced to som ...
... examples only recently coming to light thanks to the power of molecular analyses to locate the evolutionary origins of now very widespread species (e.g. Wares et al., 2002). There is ample historical evidence that the number of species that were moved out of their native ranges and introduced to som ...
Distributional Ecology of New Guinea Birds
... most easily observed and identifiedani- mountain islands varies with area and island's present physical characteristics mals, and partly because of unique isolation, providing innumerable "ex- and is independentof the island's hisadvantagesof New Guinea itself New periments of nature" whereby the to ...
... most easily observed and identifiedani- mountain islands varies with area and island's present physical characteristics mals, and partly because of unique isolation, providing innumerable "ex- and is independentof the island's hisadvantagesof New Guinea itself New periments of nature" whereby the to ...
Persistent negative effects of pesticides on biodiversity and
... components, such as loss of landscape elements, enlarged farm and field sizes and larger inputs of fertilizer and pesticides. However, very little is known about the relative contribution of these variables to the large-scale negative effects on biodiversity. In this study, we disentangled the impact ...
... components, such as loss of landscape elements, enlarged farm and field sizes and larger inputs of fertilizer and pesticides. However, very little is known about the relative contribution of these variables to the large-scale negative effects on biodiversity. In this study, we disentangled the impact ...
IMPACT: Toward a framework for understanding the
... Calculating the economic cost in terms of damages or eradication/control is one useful approach to measuring the impact of an invader (U.S. Congress 1993, Williamson 1998), and enjoys the simplicity of a common currency. However, most ecologists feel that such an anthropocentric approach does not ca ...
... Calculating the economic cost in terms of damages or eradication/control is one useful approach to measuring the impact of an invader (U.S. Congress 1993, Williamson 1998), and enjoys the simplicity of a common currency. However, most ecologists feel that such an anthropocentric approach does not ca ...
Symbiosis and Nutrition
... Symbiosis is a biological relationship in which two species live in close proximity to each other and interact regularly in such a way as to benefit one or both of the organisms. When both partners benefit, this variety of symbiosis is known as mutualism. The name for a situation in which only one o ...
... Symbiosis is a biological relationship in which two species live in close proximity to each other and interact regularly in such a way as to benefit one or both of the organisms. When both partners benefit, this variety of symbiosis is known as mutualism. The name for a situation in which only one o ...
Threatened Fauna - Corangamite Catchment Management Authority
... restricted distribution and occurs in small isolated populations mainly as a result of previous habitat clearing. Current threats include inappropriate burning regimes and predation from introduced species e.g. foxes and cats5. ...
... restricted distribution and occurs in small isolated populations mainly as a result of previous habitat clearing. Current threats include inappropriate burning regimes and predation from introduced species e.g. foxes and cats5. ...
Distribution and Reproductive Characteristics of
... many of these nonindigenous algae were first collected in or around harbors and gradually dispersed to neighboring areas. However, there is little information on the current distribution patterns of these plants throughout the Hawaiian Islands. To determine if these nonindigenous algae (or invasive ...
... many of these nonindigenous algae were first collected in or around harbors and gradually dispersed to neighboring areas. However, there is little information on the current distribution patterns of these plants throughout the Hawaiian Islands. To determine if these nonindigenous algae (or invasive ...
A model of discrete Kolmogorov-type competitive interaction in a two
... competitive two-species “toy” model of an ecosystem such that both the species occupy the same trophic level. We use numerical experiments with an aim to describe and understand some possible characteristic features of the emergence of dynamical regimes and hence of complexity in the evolving ecosys ...
... competitive two-species “toy” model of an ecosystem such that both the species occupy the same trophic level. We use numerical experiments with an aim to describe and understand some possible characteristic features of the emergence of dynamical regimes and hence of complexity in the evolving ecosys ...
FA Schott - Biodiversity New Zealand
... A key role in biodiversity distribution, however, plays the highly variable climate which ranges from subtropical, with warm, moist conditions throughout the year, for example on the Kermadec Islands, to cloudy, humid climate, with cool, wet winters and warm, usually dry summers on the Chatham Islan ...
... A key role in biodiversity distribution, however, plays the highly variable climate which ranges from subtropical, with warm, moist conditions throughout the year, for example on the Kermadec Islands, to cloudy, humid climate, with cool, wet winters and warm, usually dry summers on the Chatham Islan ...
BioDasar2015 week19-ecology and Ecosystem
... – are relationships with individuals of other species in the community, – greatly affect population structure and dynamics, and – can be categorized according to their effect on the ...
... – are relationships with individuals of other species in the community, – greatly affect population structure and dynamics, and – can be categorized according to their effect on the ...
Feeding habits of non-ocypodid crabs from two mangrove forests in
... (Vannini and Ruwa, 1994; Cannicci et al. 1996a,b) and feed directly on fresh leaves, while other Episesarma species of this region are known to climb and feed only on young mangrove trees (Sivasothi et al., 1994). It is important to note that it is not uncommon to find animal matter in the stomachs ...
... (Vannini and Ruwa, 1994; Cannicci et al. 1996a,b) and feed directly on fresh leaves, while other Episesarma species of this region are known to climb and feed only on young mangrove trees (Sivasothi et al., 1994). It is important to note that it is not uncommon to find animal matter in the stomachs ...
Community ecology PPT - Narragansett Schools
... have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, symbiosis (parasitism, mutualism, and commensalism), and facilitation • Interspecific interactions can affect the surviva ...
... have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, symbiosis (parasitism, mutualism, and commensalism), and facilitation • Interspecific interactions can affect the surviva ...
Chapter 54
... have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, symbiosis (parasitism, mutualism, and commensalism), and facilitation • Interspecific interactions can affect the surviva ...
... have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, symbiosis (parasitism, mutualism, and commensalism), and facilitation • Interspecific interactions can affect the surviva ...
Community Ecology
... have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, symbiosis (parasitism, mutualism, and commensalism), and facilitation • Interspecific interactions can affect the surviva ...
... have no effect on the species involved • Ecologists call relationships between species in a community interspecific interactions • Examples are competition, predation, herbivory, symbiosis (parasitism, mutualism, and commensalism), and facilitation • Interspecific interactions can affect the surviva ...
Facilitative interactions among aquatic invaders
... while the other is unaffected; and antagonism, which is defined here as any mutually detrimental interaction (e.g., resource competition, interference, allelopathy). Only direct pairwise interactions were tabulated. In cases where one invader had various positive and negative effects on another’s ab ...
... while the other is unaffected; and antagonism, which is defined here as any mutually detrimental interaction (e.g., resource competition, interference, allelopathy). Only direct pairwise interactions were tabulated. In cases where one invader had various positive and negative effects on another’s ab ...
abiotic constraints eclipse biotic resistance in
... with neighbors on exotic plant performance, we used a full factorial design in which water depth and different combinations of native species were the independent factors. Five exotic and three native species, representing multiple taxonomic and functional groups, were used in this experiment (Table ...
... with neighbors on exotic plant performance, we used a full factorial design in which water depth and different combinations of native species were the independent factors. Five exotic and three native species, representing multiple taxonomic and functional groups, were used in this experiment (Table ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.