trophic roles and ecological functions provided by a
... Q2: Do freshwater mussels control nutrient dynamics in the areas they occupy? Nutrient limitation is a key process that structures biotic interactions within ecosystems. This is especially apparent in stream environments in which nutrients are taken up readily and cycled through the system in a down ...
... Q2: Do freshwater mussels control nutrient dynamics in the areas they occupy? Nutrient limitation is a key process that structures biotic interactions within ecosystems. This is especially apparent in stream environments in which nutrients are taken up readily and cycled through the system in a down ...
Broadleaved Trees - Ministry of Forests, Lands and Natural
... broadleaved vegetation well-adapted to moist, open growing conditions. Wildlife are abundant near streams because of the available water, relatively productive soils, and complex vegetation structure. ...
... broadleaved vegetation well-adapted to moist, open growing conditions. Wildlife are abundant near streams because of the available water, relatively productive soils, and complex vegetation structure. ...
Invasive Species - Parliament of Australia
... have become naturalised in Queensland since European settlement (Specht 1981). Of these plants, 34% are estimated to have been introduced as garden ornamentals with a further 16% deliberately imported for food, fodder or for revegetation. Only 16% are suggested to have been accidental introductions, ...
... have become naturalised in Queensland since European settlement (Specht 1981). Of these plants, 34% are estimated to have been introduced as garden ornamentals with a further 16% deliberately imported for food, fodder or for revegetation. Only 16% are suggested to have been accidental introductions, ...
Ecological processes regulating geographic distributions of
... Mechanisms regulating the extent of species distributions have been of interest to ecologists, evolutionary biologists and biogeographers for hundreds of years. Often, changes in the environmental conditions to which a species is not adapted can set the boundary of its distribution. Other times, bar ...
... Mechanisms regulating the extent of species distributions have been of interest to ecologists, evolutionary biologists and biogeographers for hundreds of years. Often, changes in the environmental conditions to which a species is not adapted can set the boundary of its distribution. Other times, bar ...
Ugar Island - Torres Strait Regional Authority
... Ugar (Stephens) Island is a small and remote island that occupies a total area of 36 hectares located 160 kilometers north east of Thursday Island. The island is formed on a platform of massively bedded basalt, up to 30m high, that is the result of Pleistocene age volcanic activity, and is part of t ...
... Ugar (Stephens) Island is a small and remote island that occupies a total area of 36 hectares located 160 kilometers north east of Thursday Island. The island is formed on a platform of massively bedded basalt, up to 30m high, that is the result of Pleistocene age volcanic activity, and is part of t ...
The Diverse Impacts of Nonnative Species on Amphibians
... Fig. 1. The potential consequences of a nonnative species being introduced into an ecosystem that includes native amphibian species. Known invasion outcomes are presented across the top of the figure. The long term effects of a nonnative invasion are played out through time under each outcome. ...
... Fig. 1. The potential consequences of a nonnative species being introduced into an ecosystem that includes native amphibian species. Known invasion outcomes are presented across the top of the figure. The long term effects of a nonnative invasion are played out through time under each outcome. ...
The influence of dispersal on zooplankton community structure and
... for a better understanding of the factors that control local biodiversity within these communities. Prior to MacArthur and Wilson (1963, 1967), competition was the predominant focus in driving community structure. Theoretical and empirical studies have suggested that only one species should exist fo ...
... for a better understanding of the factors that control local biodiversity within these communities. Prior to MacArthur and Wilson (1963, 1967), competition was the predominant focus in driving community structure. Theoretical and empirical studies have suggested that only one species should exist fo ...
Missouri Forest Management Guidelines Unit 1
... on historical glades where fire has been excluded. Sugar maple is frequently found in high numbers within the hilly landscape that abuts the state’s largest rivers. A large number of other species that are more typically associated with other parts of the country are also native to the state. These ...
... on historical glades where fire has been excluded. Sugar maple is frequently found in high numbers within the hilly landscape that abuts the state’s largest rivers. A large number of other species that are more typically associated with other parts of the country are also native to the state. These ...
5.1 Celtic Sea Ecoregion-Ecosystem overview
... appendicularians as well as meroplankton form a significant part of the zooplankton biomass throughout the year. Overall copepod abundance has declined since the start of records in 1958. There has been a gradual change to a warmer water zooplankton community over the last few decades. Cold-water sp ...
... appendicularians as well as meroplankton form a significant part of the zooplankton biomass throughout the year. Overall copepod abundance has declined since the start of records in 1958. There has been a gradual change to a warmer water zooplankton community over the last few decades. Cold-water sp ...
Pdf version - Université de Liège
... detritivore micro-organisms: fungi, bacteria, and microalgae immediately start degrading the leaves and take advantage of what few nutrients are still present. These microorganisms are then consumed by a series of invertebrates who, while they did not have to digest dead P. oceanica leaves themselve ...
... detritivore micro-organisms: fungi, bacteria, and microalgae immediately start degrading the leaves and take advantage of what few nutrients are still present. These microorganisms are then consumed by a series of invertebrates who, while they did not have to digest dead P. oceanica leaves themselve ...
In situ conservation methods - Forest Genetic Resources Training
... It is commonly agreed today that the big challenge in using and developing in situ methods, however, is to expand our vision of protected areas to include multiple use reserves (see p. 513 ff., this volume) and even to integrate conservation of genetic resources into the production system of modern ...
... It is commonly agreed today that the big challenge in using and developing in situ methods, however, is to expand our vision of protected areas to include multiple use reserves (see p. 513 ff., this volume) and even to integrate conservation of genetic resources into the production system of modern ...
Wanger TC, Wielgoss AC, Motzke I, Clough Y, Brook BW, Sodhi NS
... a long-lasting effect, the removal of the exclosure would not change ant abundance patterns when few or no toads are present in the plantations. Therefore, exclosures were removed. For the fence exclosure experiment, 14 plots (1010 m; for environmental details, see electronic supplementary material ...
... a long-lasting effect, the removal of the exclosure would not change ant abundance patterns when few or no toads are present in the plantations. Therefore, exclosures were removed. For the fence exclosure experiment, 14 plots (1010 m; for environmental details, see electronic supplementary material ...
Endangered, apparently: the role of apparent competition in
... tal space. H ere we consider th e spatial arran g em en t of en v ironm ental niche resources, w hich determ ines the degree o f actualized spatial overlap o r sep aratio n am ong species in n a tu ra l ecosystem s (H irzel & L eLay, 2008). Spatial sep ara tio n o f ap p aren tly com peting prey sp ...
... tal space. H ere we consider th e spatial arran g em en t of en v ironm ental niche resources, w hich determ ines the degree o f actualized spatial overlap o r sep aratio n am ong species in n a tu ra l ecosystem s (H irzel & L eLay, 2008). Spatial sep ara tio n o f ap p aren tly com peting prey sp ...
Biology and Ecology of Juvenile Procambarus alleni and
... two previous studies examined life history and ecology of both P. alleni and P. fallax. The two species appear to differ in reproductive strategies, growth and maturation rates, and migration and burrowing behavior patterns. The sparse information available centers on adults rather than juvenile cr ...
... two previous studies examined life history and ecology of both P. alleni and P. fallax. The two species appear to differ in reproductive strategies, growth and maturation rates, and migration and burrowing behavior patterns. The sparse information available centers on adults rather than juvenile cr ...
The Dynamics of Temperate Forest Fragmentation
... Diamond’s (1975) selection criteria favoring large and connected reserves appears generally desirable. Reflecting on the irreversibility of fragmentation and the large-scale habitat requirements of some species (Sullivan and Shaffer 1975), we suggest that large conservation reserves are essential t ...
... Diamond’s (1975) selection criteria favoring large and connected reserves appears generally desirable. Reflecting on the irreversibility of fragmentation and the large-scale habitat requirements of some species (Sullivan and Shaffer 1975), we suggest that large conservation reserves are essential t ...
The Relative Importance of Abiotic and Biotic Factors for Seedling
... frequency and density on seedling performance when water and light are limiting. I found that each focal species distinctly influenced nitrogen availability, which is generally higher near plant canopies. I also found higher levels of nitrogen under Ambrosia dumosa compared to the other focal specie ...
... frequency and density on seedling performance when water and light are limiting. I found that each focal species distinctly influenced nitrogen availability, which is generally higher near plant canopies. I also found higher levels of nitrogen under Ambrosia dumosa compared to the other focal specie ...
reviews - Gary Bucciarelli
... Fig. 1. The potential consequences of a nonnative species being introduced into an ecosystem that includes native amphibian species. Known invasion outcomes are presented across the top of the figure. The long term effects of a nonnative invasion are played out through time under each outcome. ...
... Fig. 1. The potential consequences of a nonnative species being introduced into an ecosystem that includes native amphibian species. Known invasion outcomes are presented across the top of the figure. The long term effects of a nonnative invasion are played out through time under each outcome. ...
2006eugros2
... The results indicate that E. rosea has a strong prey size preference. When given a choice of prey sizes, E. rosea will eat significantly more small snails than large snails (Table 1). These results are consistent with many other experiments that have examined the prey size preference of E. rosea in ...
... The results indicate that E. rosea has a strong prey size preference. When given a choice of prey sizes, E. rosea will eat significantly more small snails than large snails (Table 1). These results are consistent with many other experiments that have examined the prey size preference of E. rosea in ...
New Jersey`s Landscape Project - Rutgers Environmental Stewards
... suburban sprawl has consumed land at a rapid rate. Some analysts predict that at current patterns all remaining available land would be developed within 40 years, making New Jersey possibly the first state in the nation to reach build-out (Hasse and Lathrop 2001). In New Jersey, such sprawl is evide ...
... suburban sprawl has consumed land at a rapid rate. Some analysts predict that at current patterns all remaining available land would be developed within 40 years, making New Jersey possibly the first state in the nation to reach build-out (Hasse and Lathrop 2001). In New Jersey, such sprawl is evide ...
Canadian Wildlife Service
... Habitat loss and fragmentation – means it is harder for them to find good nesting areas, there is not as much food for them to eat and there are more predators and predation on their nests Short-eared Owls almost meet COSEWIC’s criteria for being a Threatened species. They have declined about 23% ...
... Habitat loss and fragmentation – means it is harder for them to find good nesting areas, there is not as much food for them to eat and there are more predators and predation on their nests Short-eared Owls almost meet COSEWIC’s criteria for being a Threatened species. They have declined about 23% ...
Adaptive Radiation - the ant life
... The most familiar present-day adaptive radiations are known from isolated archipelagoes or similar islandlike settings (e.g., lakes). However, it is quite likely that much of the diversity of life originated through episodes of adaptive radiation during periods when ecological space became available ...
... The most familiar present-day adaptive radiations are known from isolated archipelagoes or similar islandlike settings (e.g., lakes). However, it is quite likely that much of the diversity of life originated through episodes of adaptive radiation during periods when ecological space became available ...
View/Open
... the temporal window within which breeding can occur; for example, ice or snow cover on nesting sites limiting breeding onset, and (2) species adaptations that have arisen through other natural selection processes to increase survival or fecundity, for example, by matching breeding timing with peak p ...
... the temporal window within which breeding can occur; for example, ice or snow cover on nesting sites limiting breeding onset, and (2) species adaptations that have arisen through other natural selection processes to increase survival or fecundity, for example, by matching breeding timing with peak p ...
Criteria and Indicators for Assessing the Sustainability
... The usefulness of Òindicator groupsÓ, ÒkeystoneÓ species and other concepts is still argued among biologists and their utility is questionable. This paper suggests that, in contrast to more traditional approaches to assessing taxonomic diversity, it may be possible to assess the effects of managemen ...
... The usefulness of Òindicator groupsÓ, ÒkeystoneÓ species and other concepts is still argued among biologists and their utility is questionable. This paper suggests that, in contrast to more traditional approaches to assessing taxonomic diversity, it may be possible to assess the effects of managemen ...
Plant biodiversity in boreal wood-pastures: Impacts of grazing
... hand, large herbivores can kill or damage plant individuals, which can cause a random reduction or loss of some species (drift, sensu Vellend 2010). In addition, the presence of grazers creates selection that disfavors highly palatable species and those that cannot tolerate repeated defoliation or t ...
... hand, large herbivores can kill or damage plant individuals, which can cause a random reduction or loss of some species (drift, sensu Vellend 2010). In addition, the presence of grazers creates selection that disfavors highly palatable species and those that cannot tolerate repeated defoliation or t ...
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.