2015 Annual Report - Threatened Species Recovery Hub
... Enhanced regional and national monitoring of the status of threatened species and ecological communities, and increased use and application of such monitoring in broader national ...
... Enhanced regional and national monitoring of the status of threatened species and ecological communities, and increased use and application of such monitoring in broader national ...
ECOLOGICAL PATTERNS IN A NORTHERN BOG
... major source of peat. It also has a high water holding capacity. Consequently, it not only helps to maintain wet conditions but it also reinforces those anaerobic conditions favorable to bog development. In addition, Sphagnum also has a significant impact on the chemistry of a bog. Sphagnum has a hi ...
... major source of peat. It also has a high water holding capacity. Consequently, it not only helps to maintain wet conditions but it also reinforces those anaerobic conditions favorable to bog development. In addition, Sphagnum also has a significant impact on the chemistry of a bog. Sphagnum has a hi ...
EU NON-NATIVE SPECIES RISK ANALYSIS – RISK ASSESSMENT
... very high According to IUCN, this species is often captured and sold as pets (Shekhar 2003) and there is some commercial trade in China, India and Nepal. (A. Choudury pers. comm.). In northern Viet Nam it is hunted and sold in wild meat markets in both Vietnam and China (S. Robertson pers. comm.).It ...
... very high According to IUCN, this species is often captured and sold as pets (Shekhar 2003) and there is some commercial trade in China, India and Nepal. (A. Choudury pers. comm.). In northern Viet Nam it is hunted and sold in wild meat markets in both Vietnam and China (S. Robertson pers. comm.).It ...
Propagule pressure: a null model for biological invasions
... in our analysis, we included only results that were mentioned in the abstract of each paper. This approach will likely result in an underreporting of non-significant results, but has the advantage of only including the characteristics deemed most important by each researcher and is more likely to exc ...
... in our analysis, we included only results that were mentioned in the abstract of each paper. This approach will likely result in an underreporting of non-significant results, but has the advantage of only including the characteristics deemed most important by each researcher and is more likely to exc ...
Patterns of selection of two North American native and nonnative
... • To better understand invasion dynamics, it is essential to determine the influence of genetics and ecology in species persistence in both native and nonnative habitats. One approach is to assess patterns of selection on floral and growth traits of individuals in both habitats. • Mimulus guttatus ( ...
... • To better understand invasion dynamics, it is essential to determine the influence of genetics and ecology in species persistence in both native and nonnative habitats. One approach is to assess patterns of selection on floral and growth traits of individuals in both habitats. • Mimulus guttatus ( ...
Significance and extent of secondary seed dispersal by predatory
... *Correspondence author. E-mail: [email protected] ...
... *Correspondence author. E-mail: [email protected] ...
Integrating Biosystematic Data into Conservation Planning
... Abstract.—In this paper we explore the role that biosystematists can play in conservation planning. Conservation planning concerns the location and design of reserves that both represent the biodiversity of a region and enable the persistence of that biodiversity by maintaining key ecological and ev ...
... Abstract.—In this paper we explore the role that biosystematists can play in conservation planning. Conservation planning concerns the location and design of reserves that both represent the biodiversity of a region and enable the persistence of that biodiversity by maintaining key ecological and ev ...
Structure and Function of Chihuahuan Desert
... tenebrionid beetles and orb spiders (mostly black widow spiders). Most of the taxa reported for the creosotebush bajada habitat were also reported for desert grasslands in the Jornada Basin. However, in the grasslands, small tenebrionid beetles (Araeoschizus decipiens) were several times more abunda ...
... tenebrionid beetles and orb spiders (mostly black widow spiders). Most of the taxa reported for the creosotebush bajada habitat were also reported for desert grasslands in the Jornada Basin. However, in the grasslands, small tenebrionid beetles (Araeoschizus decipiens) were several times more abunda ...
serial depletion of marine invertebrates leads to the decline
... culturally important subsistence fishery for Sugpiaq (Chugach Alutiiq) natives. We took multiple approaches to determine causes of decline. Field surveys examined the significant predictors of Katharina density and biomass across 11 sites varying in harvest pressure, and an integrated analysis of arch ...
... culturally important subsistence fishery for Sugpiaq (Chugach Alutiiq) natives. We took multiple approaches to determine causes of decline. Field surveys examined the significant predictors of Katharina density and biomass across 11 sites varying in harvest pressure, and an integrated analysis of arch ...
pollination syndromes and floral specialization
... flowers attract a broader spectrum of visitors than one might expect of their syndromes, and that flowers often seem to diverge without excluding one type of pollinator over another. Nevertheless, the larger framework surrounding pollination syndromes can be revised and extended to account more subt ...
... flowers attract a broader spectrum of visitors than one might expect of their syndromes, and that flowers often seem to diverge without excluding one type of pollinator over another. Nevertheless, the larger framework surrounding pollination syndromes can be revised and extended to account more subt ...
Cascading effects of artificial light at night: resource
... Artificial light at night can impact directly on plants [53,54]. In addition to conversion of sunlight into energy via photosynthesis (to which the relatively low light levels experienced by plants under artificial light at night probably make a very minor contribution), plants respond to their natu ...
... Artificial light at night can impact directly on plants [53,54]. In addition to conversion of sunlight into energy via photosynthesis (to which the relatively low light levels experienced by plants under artificial light at night probably make a very minor contribution), plants respond to their natu ...
The spatial and temporal components of functional connectivity in
... 2000), and is therefore highly dependent on the organisms and landscape being studied. While human activity is usually the cause of changes in structural connectivity through land-use change, it is functional connectivity which determines the ecological effects of habitat destruction and fragmentati ...
... 2000), and is therefore highly dependent on the organisms and landscape being studied. While human activity is usually the cause of changes in structural connectivity through land-use change, it is functional connectivity which determines the ecological effects of habitat destruction and fragmentati ...
Experimental Manipulation of Grassland Plant Diversity Induces
... plant species richness, plant biomass or plant functional composition lead to strong changes in the diversity of arthropod communities [2, 3]. During the last decades, many different studies, conducted in the framework of several experimental platforms, focused on the relationship between plant (div ...
... plant species richness, plant biomass or plant functional composition lead to strong changes in the diversity of arthropod communities [2, 3]. During the last decades, many different studies, conducted in the framework of several experimental platforms, focused on the relationship between plant (div ...
Scale-dependent interactions and community
... suggesting that either biotic (competition) or abiotic factors (recruitment failure, for instance because of increased inundation) limits forb establishment or survival within the Spartina zone. This would imply that facilitation prevails only at a certain distance, whereas other factors determine f ...
... suggesting that either biotic (competition) or abiotic factors (recruitment failure, for instance because of increased inundation) limits forb establishment or survival within the Spartina zone. This would imply that facilitation prevails only at a certain distance, whereas other factors determine f ...
An introduction to microevolution: rate, pattern, process
... rodent populations. They conclude that the observed changes are best explained by natural selection, and that rates of evolution are higher on smaller and more remote islands. Bone and Farres (2001) review rates of microevolution in plants, concluding that evolution can be sustained under artificial ...
... rodent populations. They conclude that the observed changes are best explained by natural selection, and that rates of evolution are higher on smaller and more remote islands. Bone and Farres (2001) review rates of microevolution in plants, concluding that evolution can be sustained under artificial ...
Consequences of low mobility in spatially and temporally
... In dynamic landscapes, however, replicated trial runs always showed species frequency stabilizing well before 100 time-steps, demonstrating that 100 steps were a reliable basis for comparison of landscape and dispersal variables. Relative to frequency values at 100 steps, transient effects were mino ...
... In dynamic landscapes, however, replicated trial runs always showed species frequency stabilizing well before 100 time-steps, demonstrating that 100 steps were a reliable basis for comparison of landscape and dispersal variables. Relative to frequency values at 100 steps, transient effects were mino ...
Ecological Best-Practice Livestock Production Guidelines for the
... Acknowledgements & Sponsors ....................................................................................................... - 3 List of Acronyms ................................................................................................................................... - 4 Structure o ...
... Acknowledgements & Sponsors ....................................................................................................... - 3 List of Acronyms ................................................................................................................................... - 4 Structure o ...
cedarcreek.umn.edu - Wiley Online Library
... population had three advantages over measuring selection on naturally occurring populations: we were able to compare selection on populations of the same genetic composition grown in two environments, so any observed differences between treatments cannot result from differences in trait variation am ...
... population had three advantages over measuring selection on naturally occurring populations: we were able to compare selection on populations of the same genetic composition grown in two environments, so any observed differences between treatments cannot result from differences in trait variation am ...
Israa Dorgham
... One major controversy the paper by Hairston et al. has incited is the debate on whether herbivores and carnivores can be considered alone without reference to other trophic levels. Ehrlich and Birch comment, “You could say that the cabbage white butterfly is food-limited because the world could be p ...
... One major controversy the paper by Hairston et al. has incited is the debate on whether herbivores and carnivores can be considered alone without reference to other trophic levels. Ehrlich and Birch comment, “You could say that the cabbage white butterfly is food-limited because the world could be p ...
Salinized rivers: degraded systems or new habitats for salt
... The flow environment and water permanency may affect salinity tolerance. Species of two genera of Coleoptera inhabiting temporary saline standing waters tolerated higher salinity than congeneric species inhabiting permanent salineflowing waters [20]. This may be because species inhabiting temporary ...
... The flow environment and water permanency may affect salinity tolerance. Species of two genera of Coleoptera inhabiting temporary saline standing waters tolerated higher salinity than congeneric species inhabiting permanent salineflowing waters [20]. This may be because species inhabiting temporary ...
Israa Dorgham
... One major controversy the paper by Hairston et al. has incited is the debate on whether herbivores and carnivores can be considered alone without reference to other trophic levels. Ehrlich and Birch comment, “You could say that the cabbage white butterfly is food-limited because the world could be p ...
... One major controversy the paper by Hairston et al. has incited is the debate on whether herbivores and carnivores can be considered alone without reference to other trophic levels. Ehrlich and Birch comment, “You could say that the cabbage white butterfly is food-limited because the world could be p ...
eports - University of Rhode Island
... It is also possible that competing native and exotic species may respond differently to spatial and temporal separation. Generally, spatiotemporal co-occurrence increases competition due to a lack of niche partitioning (Schoener 1974). In support of this, Denno et al. (1995) suggested that resource ...
... It is also possible that competing native and exotic species may respond differently to spatial and temporal separation. Generally, spatiotemporal co-occurrence increases competition due to a lack of niche partitioning (Schoener 1974). In support of this, Denno et al. (1995) suggested that resource ...
The river Rhine: a global highway for dispersal of aquatic invasive
... hydraulic engineering. Improving water quality while these constraints remain in place has led to increased colonization by aquatic invasive species. This tendency has been accelerated by the construction of canals connecting river basins. Over the last two centuries, the total surface area of river ...
... hydraulic engineering. Improving water quality while these constraints remain in place has led to increased colonization by aquatic invasive species. This tendency has been accelerated by the construction of canals connecting river basins. Over the last two centuries, the total surface area of river ...
- D-Scholarship@Pitt
... predicted to be the key drivers of plant community dynamics and resulting structure. Tilman (1988, 1990) has argued that species-specific allocation tradeoffs should correlate with hierarchies of competitive ability, relative abundance, and coexistence in plant communities. We examined 6 classic and ...
... predicted to be the key drivers of plant community dynamics and resulting structure. Tilman (1988, 1990) has argued that species-specific allocation tradeoffs should correlate with hierarchies of competitive ability, relative abundance, and coexistence in plant communities. We examined 6 classic and ...
Ecological fitting
Ecological fitting is ""the process whereby organisms colonize and persist in novel environments, use novel resources or form novel associations with other species as a result of the suites of traits that they carry at the time they encounter the novel condition.” It can be understood as a situation in which a species' interactions with its biotic and abiotic environment seem to indicate a history of coevolution, when in actuality the relevant traits evolved in response to a different set of biotic and abiotic conditions. The simplest form of ecological fitting is resource tracking, in which an organism continues to exploit the same resources, but in a new host or environment. In this framework, the organism occupies a multidimensional operative environment defined by the conditions in which it can persist, similar to the idea of the Hutchinsonian niche. In this case, a species can colonize new environments (e.g. an area with the same temperature and water regime) and/or form new species interactions (e.g. a parasite infecting a new host) which can lead to the misinterpretation of the relationship as coevolution, although the organism has not evolved and is continuing to exploit the same resources it always has. The more strict definition of ecological fitting requires that a species encounter an environment or host outside of its original operative environment and obtain realized fitness based on traits developed in previous environments that are now co-opted for a new purpose. This strict form of ecological fitting can also be expressed either as colonization of new habitat or the formation of new species interactions.