Multiple effects of exotic largemouth bass
... piscivorous largemouth bass (Micropterus salmoides) have been introduced to a number of Japanese farm ponds that were originally characterized by a high level of biodiversity. We evaluated the effects of exotic bass on the structure of the fish assemblage following their introduction into the farm po ...
... piscivorous largemouth bass (Micropterus salmoides) have been introduced to a number of Japanese farm ponds that were originally characterized by a high level of biodiversity. We evaluated the effects of exotic bass on the structure of the fish assemblage following their introduction into the farm po ...
Hedgerow management and wildlife review
... found that the species diversity of ground flora plots was most strongly influenced by hedge width. Larger hedges, with greater total areas of foliage, will generally support larger populations of phytophagous insects (although not necessarily more species). This should, consequently, have benefits ...
... found that the species diversity of ground flora plots was most strongly influenced by hedge width. Larger hedges, with greater total areas of foliage, will generally support larger populations of phytophagous insects (although not necessarily more species). This should, consequently, have benefits ...
Redacted for privacy - H.J. Andrews Experimental Forest
... on species composition and relative abundance were apparent up to 100 m into oldgrowth forests. Species were characterized as edge-phobic (interior forest associates), ...
... on species composition and relative abundance were apparent up to 100 m into oldgrowth forests. Species were characterized as edge-phobic (interior forest associates), ...
has shown differences among various types of environment, such as
... or moth exploits a large set of host plants growing in environments ranging from sea level to medium and high Libelloides coccajus, an ascalaphid neuropteran mountain. This is true both as regards plants which produce flowers, from which adult butterflies suck nectar, and the plants on which the lar ...
... or moth exploits a large set of host plants growing in environments ranging from sea level to medium and high Libelloides coccajus, an ascalaphid neuropteran mountain. This is true both as regards plants which produce flowers, from which adult butterflies suck nectar, and the plants on which the lar ...
A Critical Review of Twenty Years` Use of the Resource
... Twenty Years of the Resource-Ratio Theory arate the resource space into zones where the individual species had positive and negative population growth, demonstrating how resource conditions affected population growth and, ultimately, competitive outcomes. Further, he briefly discussed how the graph ...
... Twenty Years of the Resource-Ratio Theory arate the resource space into zones where the individual species had positive and negative population growth, demonstrating how resource conditions affected population growth and, ultimately, competitive outcomes. Further, he briefly discussed how the graph ...
Processes affecting diversity
... Connell proposed disturbance is a prevalent feature that significantly influences community diversity. Proposed both high and low levels of disturbance would reduce diversity. ...
... Connell proposed disturbance is a prevalent feature that significantly influences community diversity. Proposed both high and low levels of disturbance would reduce diversity. ...
Ecology - Defined - Academic Home Page
... • the functional position of an organism in its environment; comprising time, space and tolerance range. Principle of competitive exclusion (Gause's principle) • states that no two organisms can occupy the exact same niche within the environment ...
... • the functional position of an organism in its environment; comprising time, space and tolerance range. Principle of competitive exclusion (Gause's principle) • states that no two organisms can occupy the exact same niche within the environment ...
Read Gil's paper
... data suggest a relatively wide albeit patchy distribution of Epomis in Israel. Whereas the records suggest that E. dejeani is relatively more abundant than E. circumscriptus in Israel, records for other regions in the Palaearctic Region suggest the opposite. However, at least in Italy, E. circumscri ...
... data suggest a relatively wide albeit patchy distribution of Epomis in Israel. Whereas the records suggest that E. dejeani is relatively more abundant than E. circumscriptus in Israel, records for other regions in the Palaearctic Region suggest the opposite. However, at least in Italy, E. circumscri ...
Testing Predictions of the Prey of Lion (Panthera leo) Derived from
... ABSTRACT Apex predators are often threatened with extinction, and reintroduction is one method conservation managers are using to secure their persistence. Yet the ability to predict what these predators will eat upon reintroduction is lacking. Here we test predictions of the diet of the lion (Panth ...
... ABSTRACT Apex predators are often threatened with extinction, and reintroduction is one method conservation managers are using to secure their persistence. Yet the ability to predict what these predators will eat upon reintroduction is lacking. Here we test predictions of the diet of the lion (Panth ...
Eastern Milksnake (Lampropeltis triangulum triangulum)
... Interesting Facts: The Eastern Milksnake seems to enjoy rural areas with an abundance of barns, sheds and older houses. It is often found under objects that receive direct sunlight such as large planks, debris, rock piles or rubbish; using the heat from these objects to thermoregulate (control it’s ...
... Interesting Facts: The Eastern Milksnake seems to enjoy rural areas with an abundance of barns, sheds and older houses. It is often found under objects that receive direct sunlight such as large planks, debris, rock piles or rubbish; using the heat from these objects to thermoregulate (control it’s ...
BMC Ecology perennials Erica Spotswood
... tissues (flowers) are often selectively targeted by herbivores, like deer. These types of herbivory influence a plant's growth and abundance. The objective of this study was to identify the effects of leaf and meristem removal (simulated herbivory within an exclosure) on fruit and flower production ...
... tissues (flowers) are often selectively targeted by herbivores, like deer. These types of herbivory influence a plant's growth and abundance. The objective of this study was to identify the effects of leaf and meristem removal (simulated herbivory within an exclosure) on fruit and flower production ...
bird species richness in relation to isolation of aspen habitats
... elevation between 2500 m and 3500 m, (5) stand area l-2 ha, (6) varying degrees of isolation from other aspen, and (7) within 2 km access from a trail or road. Many of the stands initially selected from these maps were eliminated after ground-truth surveys indicated they did not meet the above crite ...
... elevation between 2500 m and 3500 m, (5) stand area l-2 ha, (6) varying degrees of isolation from other aspen, and (7) within 2 km access from a trail or road. Many of the stands initially selected from these maps were eliminated after ground-truth surveys indicated they did not meet the above crite ...
Vacant niches in nature, ecology, and evolutionary theory: a mini
... ment. The latter is constantly changing, and organisms are forced to adapt to these changes in one way or another. As soon as organisms adapt to altered conditions, new changes take place and this process goes on incessantly. Disturbances, uncertainty and suboptimal states are more likely to be the ...
... ment. The latter is constantly changing, and organisms are forced to adapt to these changes in one way or another. As soon as organisms adapt to altered conditions, new changes take place and this process goes on incessantly. Disturbances, uncertainty and suboptimal states are more likely to be the ...
Basic and Applied Ecology
... based on time series data, with each pair of values of occupancy and mean local abundance being calculated for a different season or year. Analyses based on values calculated in different areas of a species’ geographic range at the same time (or approximately so) are scarce (but see Venier & Fahrig ...
... based on time series data, with each pair of values of occupancy and mean local abundance being calculated for a different season or year. Analyses based on values calculated in different areas of a species’ geographic range at the same time (or approximately so) are scarce (but see Venier & Fahrig ...
Maureen McClung - Biology Department | UNC Chapel Hill
... the limits to similarity among coexisting species, resource partitioning, and evolution. This modern theory of the niche had more theoretical fecundity than Hutchinson’s in that it produced generalizations beyond the competitive exclusion principle. For example, MacArthur and Levin’s (1967) theory o ...
... the limits to similarity among coexisting species, resource partitioning, and evolution. This modern theory of the niche had more theoretical fecundity than Hutchinson’s in that it produced generalizations beyond the competitive exclusion principle. For example, MacArthur and Levin’s (1967) theory o ...
Seed germination traits of two plant functional
... species; and Chinnusamy et al. (2005) have reviewed the molecular basis of salt tolerance in plants. However, most previous studies have focused on the responses of plants to salinity within species (e.g., Houle et al. 2001; Megdiche et al. 2007; Rumbaugh et al. 1993). A few studies have been conduc ...
... species; and Chinnusamy et al. (2005) have reviewed the molecular basis of salt tolerance in plants. However, most previous studies have focused on the responses of plants to salinity within species (e.g., Houle et al. 2001; Megdiche et al. 2007; Rumbaugh et al. 1993). A few studies have been conduc ...
Urban biodiversity: patterns and mechanisms
... These results are comparable to recent reviews by McKinney11 and Luck and Smallbone.10 However, there is a surprisingly high amount of variation among taxonomic animal groups. As has been noted in previous studies,3,11 bird abundances often increase in cities relative to rural or natural habitats, w ...
... These results are comparable to recent reviews by McKinney11 and Luck and Smallbone.10 However, there is a surprisingly high amount of variation among taxonomic animal groups. As has been noted in previous studies,3,11 bird abundances often increase in cities relative to rural or natural habitats, w ...
Maureen McClung - Biology Department | UNC Chapel Hill
... the limits to similarity among coexisting species, resource partitioning, and evolution. This modern theory of the niche had more theoretical fecundity than Hutchinson’s in that it produced generalizations beyond the competitive exclusion principle. For example, MacArthur and Levin’s (1967) theory o ...
... the limits to similarity among coexisting species, resource partitioning, and evolution. This modern theory of the niche had more theoretical fecundity than Hutchinson’s in that it produced generalizations beyond the competitive exclusion principle. For example, MacArthur and Levin’s (1967) theory o ...
empirical evidence for an optimal body size in snakes
... area. The regression lines for the body sizes of the largest and smallest species in an assemblage intersected at a point implying that landmasses of 0.1 km2 would support a single species with a body size of 1.22 m (95% CI 5 0.37–5.25 m). Direct examination of one-species islands from our data reve ...
... area. The regression lines for the body sizes of the largest and smallest species in an assemblage intersected at a point implying that landmasses of 0.1 km2 would support a single species with a body size of 1.22 m (95% CI 5 0.37–5.25 m). Direct examination of one-species islands from our data reve ...
Is a healthy ecosystem one that is rich in parasites?
... In reality, there are few documented cases of extinction by parasitism; for example, a microsporidian was found to have eliminated the last captive population of the land snail Partula turgida [22] even though the host had been wiped out in the wild as a consequence of the introduction of alien spec ...
... In reality, there are few documented cases of extinction by parasitism; for example, a microsporidian was found to have eliminated the last captive population of the land snail Partula turgida [22] even though the host had been wiped out in the wild as a consequence of the introduction of alien spec ...
Relationships between ecological interaction modifications and
... evolutionary genetics to understand the likely evolutionary dynamics of ecologically important traits, concentrating on aspects of plant-herbivore interactions such as resistance to herbivores. In their view, diffuse coevolution is a likely product of either of two phenomena (or both): first, geneti ...
... evolutionary genetics to understand the likely evolutionary dynamics of ecologically important traits, concentrating on aspects of plant-herbivore interactions such as resistance to herbivores. In their view, diffuse coevolution is a likely product of either of two phenomena (or both): first, geneti ...
Northern Corroboree Frog review of information
... Invasive exotic plant species occur at a number of Northern Corroboree Frog breeding sites in the Fiery Range and Northern Brindabella Range subpopulations (Osborne 1990; NSW NPWS 2001). The two species considered most detrimental to the frogs are Rubus fruticosus (Blackberry) and Mimulus moschatus ...
... Invasive exotic plant species occur at a number of Northern Corroboree Frog breeding sites in the Fiery Range and Northern Brindabella Range subpopulations (Osborne 1990; NSW NPWS 2001). The two species considered most detrimental to the frogs are Rubus fruticosus (Blackberry) and Mimulus moschatus ...
Rusty Crayfish
... Rusty Crayfish are being spread in North America in bait buckets by fisherman. Once introduced, they can spread quickly into new habitats as they are opportunistic feeders, and resistant to a wide range of water temperatures. Only one fertilized female is needed to start a new population, as they ca ...
... Rusty Crayfish are being spread in North America in bait buckets by fisherman. Once introduced, they can spread quickly into new habitats as they are opportunistic feeders, and resistant to a wide range of water temperatures. Only one fertilized female is needed to start a new population, as they ca ...
ASSEMBLAGES: Evidence from the Fossil Record
... ways that paleontological faunal and some floral lists differ from ecological ones. Time-averaging also is present in some neoecological studies, such as those that assess plant damage in extant tropical forest litter, which may involve combining data from different seasons, years, or even longer in ...
... ways that paleontological faunal and some floral lists differ from ecological ones. Time-averaging also is present in some neoecological studies, such as those that assess plant damage in extant tropical forest litter, which may involve combining data from different seasons, years, or even longer in ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.