UK NON-NATIVE ORGANISM RISK ASSESSMENT SCHEME
... no supporting evidence presented. However, a recent review of the fossil and archaeological evidence suggests that the species was present in the UK during the early Holocene (alongside woodland and a temperate climate). On this basis, the author (Stewart 2007) believes the species to be part of the ...
... no supporting evidence presented. However, a recent review of the fossil and archaeological evidence suggests that the species was present in the UK during the early Holocene (alongside woodland and a temperate climate). On this basis, the author (Stewart 2007) believes the species to be part of the ...
Using trait-based ecology to restore resilient ecosystems
... of montane forests in western North America Daniel C. Laughlin1,2,3 , Robert T. Strahan4 , David W. Huffman5 , Andrew J. Sánchez Meador2,5 Historical reference conditions have provided empirical benchmarks for guiding ecological restoration but the relevance of historical conditions has been questio ...
... of montane forests in western North America Daniel C. Laughlin1,2,3 , Robert T. Strahan4 , David W. Huffman5 , Andrew J. Sánchez Meador2,5 Historical reference conditions have provided empirical benchmarks for guiding ecological restoration but the relevance of historical conditions has been questio ...
a comparison of maximum sprint speed among the five
... adults (maximum SVL: 143 mm), but are comparable in size to the other two species as juveniles and equally difficult to distinguish in the field (Fitch 1954; Davis 1969). Plestiodon laticeps is more arboreal and is found in both open and closed habitat (Fitch 1954; Watson and Gough 2012). It exhibit ...
... adults (maximum SVL: 143 mm), but are comparable in size to the other two species as juveniles and equally difficult to distinguish in the field (Fitch 1954; Davis 1969). Plestiodon laticeps is more arboreal and is found in both open and closed habitat (Fitch 1954; Watson and Gough 2012). It exhibit ...
Spotted-tailed Quoll A vulnerable species
... Targeted feral animal control programs may benefit the Spotted-tailed Quoll through reduction of competition. However, due to the uncertainty about the uptake of poisoned baits by Quolls and the risk of secondary poisoning (and the degree to which individual animals are affected or killed) vertebrat ...
... Targeted feral animal control programs may benefit the Spotted-tailed Quoll through reduction of competition. However, due to the uncertainty about the uptake of poisoned baits by Quolls and the risk of secondary poisoning (and the degree to which individual animals are affected or killed) vertebrat ...
Biotic Interactions, Structure, and Long
... The distribution of living organisms varies in space and time. Understanding the forces that determine such variations is one of the main challenges in ecology. Spatial pattern results from interaction of several forces: environmental heterogeneity (Ysebaert and Herman 2002), physical factors (Thrus ...
... The distribution of living organisms varies in space and time. Understanding the forces that determine such variations is one of the main challenges in ecology. Spatial pattern results from interaction of several forces: environmental heterogeneity (Ysebaert and Herman 2002), physical factors (Thrus ...
Page numbers can be shown as a footer They are usually of
... rufus in the laboratory were significantly positively correlated with dung pad size. In one field experiment, a correlation was found between dung pad size and numbers of larvae in pads of different sizes and larval densities (numbers per unit dung volume) were significantly and positively correlate ...
... rufus in the laboratory were significantly positively correlated with dung pad size. In one field experiment, a correlation was found between dung pad size and numbers of larvae in pads of different sizes and larval densities (numbers per unit dung volume) were significantly and positively correlate ...
Britain`s Mammals - People`s Trust for Endangered Species
... l Many targets were set against specific deadlines, of which some have been met (eg giving legal protection to the water vole) and others have expired (eg preventing the expansion of grey squirrels into key red squirrel areas). Indeed, 200 (nearly 20% of all targets) will have expired by the end of ...
... l Many targets were set against specific deadlines, of which some have been met (eg giving legal protection to the water vole) and others have expired (eg preventing the expansion of grey squirrels into key red squirrel areas). Indeed, 200 (nearly 20% of all targets) will have expired by the end of ...
Histological Description of the Male and Female Gonads in Tegula
... to 140 µm. The histological structure of the testis follows the same pattern of development as spermatogenic cells, i.e. in an outward direction from connective tissue trabeculae. This observation is similar to reported descriptions for Tegula atra (Coloma), T. tridentata (Brown), T. rustica (Kuliko ...
... to 140 µm. The histological structure of the testis follows the same pattern of development as spermatogenic cells, i.e. in an outward direction from connective tissue trabeculae. This observation is similar to reported descriptions for Tegula atra (Coloma), T. tridentata (Brown), T. rustica (Kuliko ...
Research frontiers in null model analysis
... (Gotelli & McCabe, in press) suggests that most communities exhibit non-random co-occurrence patterns that are indeed consistent with Diamond’s (1975) model, although there are intriguing differences among taxonomic groups in the degree of non-randomness. ...
... (Gotelli & McCabe, in press) suggests that most communities exhibit non-random co-occurrence patterns that are indeed consistent with Diamond’s (1975) model, although there are intriguing differences among taxonomic groups in the degree of non-randomness. ...
Fundamental and realized niches of two chrysomelid
... (Reitz and trumble, 2002; Arthur 1991). For example, the Lantana hispid Uroplata girardi Pic (Coleoptera: Chrysomelidae) and the leaf mining fly Ophiomyia camarae Spencer (Dipetera: Agromyzidae), were released as bio-control agents against the weed Lantana camara L. (Verbenaceae) in South Africa in ...
... (Reitz and trumble, 2002; Arthur 1991). For example, the Lantana hispid Uroplata girardi Pic (Coleoptera: Chrysomelidae) and the leaf mining fly Ophiomyia camarae Spencer (Dipetera: Agromyzidae), were released as bio-control agents against the weed Lantana camara L. (Verbenaceae) in South Africa in ...
Reproduction in three sympatric lizard species from west
... We are cognizant of the limitations imposed by the short period covered by our collections. Despite this, there is clearly a need ...
... We are cognizant of the limitations imposed by the short period covered by our collections. Despite this, there is clearly a need ...
Invasiveness, invasibility and the role of environmental
... Invasion ecology, the study of how organisms spread in habitats to which they are not native, asks both about the invasiveness of species and the invasibility of habitats: Which species are most likely to become invasive? Which habitats are most susceptible to invasion? To set the stage for consider ...
... Invasion ecology, the study of how organisms spread in habitats to which they are not native, asks both about the invasiveness of species and the invasibility of habitats: Which species are most likely to become invasive? Which habitats are most susceptible to invasion? To set the stage for consider ...
Priority effects: natives, but not exotics, pay to arrive late
... on their co-occurrence across several old-field plant communities at the Three Bend Scenic Wildlife Management Refuge Area as part of the Oak Ridge National Environmental Research Park near Oak Ridge, TN (35–580 N, 84–170 W) (Souza et al. 2011). We purposefully selected equal numbers of locally domin ...
... on their co-occurrence across several old-field plant communities at the Three Bend Scenic Wildlife Management Refuge Area as part of the Oak Ridge National Environmental Research Park near Oak Ridge, TN (35–580 N, 84–170 W) (Souza et al. 2011). We purposefully selected equal numbers of locally domin ...
species - West Windsor-Plainsboro Regional School District
... reproductive barriers, and, over time, the rate of hybridization decreases Where reinforcement occurs, reproductive barriers should be stronger for sympatric than for allopatric species ...
... reproductive barriers, and, over time, the rate of hybridization decreases Where reinforcement occurs, reproductive barriers should be stronger for sympatric than for allopatric species ...
Ecological and evolutionary implications of food subsidies from
... and regulations that have progressively been applied there limit the accessibility of these resources to scavenging organisms, whereas in developing countries, where high human densities are often coupled with less strict environmental policies, dumps are large and numerous. On the other hand, inten ...
... and regulations that have progressively been applied there limit the accessibility of these resources to scavenging organisms, whereas in developing countries, where high human densities are often coupled with less strict environmental policies, dumps are large and numerous. On the other hand, inten ...
Why behavioural responses may not reflect the
... relative susceptibility of dierent species, future studies need to address how behavioural changes in response to disturbance aect demographic parameters such as survival and reproductive success. This will also require an understanding of the strength of density-dependence within a system, in ord ...
... relative susceptibility of dierent species, future studies need to address how behavioural changes in response to disturbance aect demographic parameters such as survival and reproductive success. This will also require an understanding of the strength of density-dependence within a system, in ord ...
Environmental correlates of acorn production by four species of Minnesota oaks
... Bur and white oaks are members of the white oak section of the genus (section Quercus) and mature acorns in a single season (‘1-year’ species), while pin and red oaks are members of the red oak section (section Lobatae) and require 2 years to mature acorns (‘2-year’ species). All are wind pollinated ...
... Bur and white oaks are members of the white oak section of the genus (section Quercus) and mature acorns in a single season (‘1-year’ species), while pin and red oaks are members of the red oak section (section Lobatae) and require 2 years to mature acorns (‘2-year’ species). All are wind pollinated ...
Ecological and evolutionary implications of food subsidies
... and regulations that have progressively been applied there limit the accessibility of these resources to scavenging organisms, whereas in developing countries, where high human densities are often coupled with less strict environmental policies, dumps are large and numerous. On the other hand, inten ...
... and regulations that have progressively been applied there limit the accessibility of these resources to scavenging organisms, whereas in developing countries, where high human densities are often coupled with less strict environmental policies, dumps are large and numerous. On the other hand, inten ...
Mutualism, Facilitation, and the Structure of Ecological Communities
... One of the classic mechanisms through which populations are thought to be regulated is density-dependent mortality. High intraspecific densities can be associated with high rates of mortality because of competition for limiting resources—such as food, light, or space—or increased rates of detection ...
... One of the classic mechanisms through which populations are thought to be regulated is density-dependent mortality. High intraspecific densities can be associated with high rates of mortality because of competition for limiting resources—such as food, light, or space—or increased rates of detection ...
Gilliam FS and MR Roberts. 2003. The dynamic nature of the
... Likely because of the logistical demands of field sampling, studies based on one-time samples of the herb layer are prevalent in the literature. Unfortunately, this approach does not lead to an appreciation of the great temporal variability of forest understory communities. A large emphasis on the sp ...
... Likely because of the logistical demands of field sampling, studies based on one-time samples of the herb layer are prevalent in the literature. Unfortunately, this approach does not lead to an appreciation of the great temporal variability of forest understory communities. A large emphasis on the sp ...
Where Is the World`s Biological Diversity Found?
... North America, large-scale patterns of species richness are highly correlated for amphibians, birds, butterflies, mammals, reptiles, land snails, trees, all vascular plants, and tiger beetles; that is, a region with numerous species of one group will tend to have numerous species of the other groups ...
... North America, large-scale patterns of species richness are highly correlated for amphibians, birds, butterflies, mammals, reptiles, land snails, trees, all vascular plants, and tiger beetles; that is, a region with numerous species of one group will tend to have numerous species of the other groups ...
1 - Biology Department | UNC Chapel Hill
... Alpha-niche Differentiation .................................................................................................................. 5 1.1 Resources (type of resource and time of availability) ........................................................... 5 ...
... Alpha-niche Differentiation .................................................................................................................. 5 1.1 Resources (type of resource and time of availability) ........................................................... 5 ...
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... The main threat to this mangrove is deforestation. Due to its localised populations, it is also at risk from unpredictable storms. Rise in sea level is also a threat. http://www.iucnredlist.org/details/178833/0 Bruguiera hainesii Status: Critically Endangered Range: Singapore, Malaysia and Papa New ...
... The main threat to this mangrove is deforestation. Due to its localised populations, it is also at risk from unpredictable storms. Rise in sea level is also a threat. http://www.iucnredlist.org/details/178833/0 Bruguiera hainesii Status: Critically Endangered Range: Singapore, Malaysia and Papa New ...
13.1 Ecologists Study Relationships / 13.2 Biotic & Abiotic Organism
... While the earth is huge, life is found in a very narrow layer, called the biosphere. If the earth could be shrunk to the size of an apple, the biosphere would be no thicker than the apple's skin. ...
... While the earth is huge, life is found in a very narrow layer, called the biosphere. If the earth could be shrunk to the size of an apple, the biosphere would be no thicker than the apple's skin. ...
a critique of the
... rather only slow the loss of species from local communities (Chesson and Huntly 1997, Bell 2001, Hubbell 2001, McPeek and Gomulkiewicz 2005). Many ecologists are now engaged in debates about the relative importance of these two viewpoints (niche vs. neutral dynamics; Gewin 2006). However, in followi ...
... rather only slow the loss of species from local communities (Chesson and Huntly 1997, Bell 2001, Hubbell 2001, McPeek and Gomulkiewicz 2005). Many ecologists are now engaged in debates about the relative importance of these two viewpoints (niche vs. neutral dynamics; Gewin 2006). However, in followi ...