1 Breeding Phenology of an Amphibian Community in a Mediterranean Area
... monthly temperature, monthly precipitation and monthly number of rainy days. Standard linear multiple regression was considered appropriate because there was minimal autocorrelation in the phenological time series. ...
... monthly temperature, monthly precipitation and monthly number of rainy days. Standard linear multiple regression was considered appropriate because there was minimal autocorrelation in the phenological time series. ...
On size and area: Patterns of mammalian body size extremes
... hypothesis is that the pattern is the result of sampling artefacts, which we call the `statistical artefact hypothesis'. Our second hypothesis is that body size aects the number of individuals which a particular species can pack in a given area, and which leads to the pattern. We call this the `are ...
... hypothesis is that the pattern is the result of sampling artefacts, which we call the `statistical artefact hypothesis'. Our second hypothesis is that body size aects the number of individuals which a particular species can pack in a given area, and which leads to the pattern. We call this the `are ...
Endangered Species of Illinois
... the creation of the Illinois Endangered Species Protection Board. The scientists on this board determine which species should be listed on the Illinois List as threatened or endangered within the state. The Board may only list species that live in or use Illinois, and must base their listings on sci ...
... the creation of the Illinois Endangered Species Protection Board. The scientists on this board determine which species should be listed on the Illinois List as threatened or endangered within the state. The Board may only list species that live in or use Illinois, and must base their listings on sci ...
Symbiosis and Nutrition
... because in this variety both creatures benefit. Thus, there is no host, and theoretically the partners are equal, though in practice one usually holds dominance over the other. An example of this inequality is the relationship between humans and dogs. In this relationship, both human and dog clearly ...
... because in this variety both creatures benefit. Thus, there is no host, and theoretically the partners are equal, though in practice one usually holds dominance over the other. An example of this inequality is the relationship between humans and dogs. In this relationship, both human and dog clearly ...
Critical Biodiversity
... compete for a niche, but the niche that makes it possible for s(3) to exist on site (i,j) is not the environment e(i,j); it is s(17). Higher on the chain another organism may occupy the niche created by the presence of s(3). Instantaneously at a particular site the species are organized in this hier ...
... compete for a niche, but the niche that makes it possible for s(3) to exist on site (i,j) is not the environment e(i,j); it is s(17). Higher on the chain another organism may occupy the niche created by the presence of s(3). Instantaneously at a particular site the species are organized in this hier ...
The search for evidence of mass extinction
... But in 1860, only a year after Origin's publication, the geologist John Phillips begged to differ in a groundbreaking lecture at Cambridge, published as Life on the Earth, Its Origin and Succession. "Surely this imperfection of the geological record is overrated," he wrote. "With the exceptions of t ...
... But in 1860, only a year after Origin's publication, the geologist John Phillips begged to differ in a groundbreaking lecture at Cambridge, published as Life on the Earth, Its Origin and Succession. "Surely this imperfection of the geological record is overrated," he wrote. "With the exceptions of t ...
Invasion of exotic species
... recipient ecosystems, they may have secondary spread and they may become invasive. A comparative analysis of similarities and differences may provide valuable insights; as a common starting point, we should all agree that we have to lean on models as long as the empirical data are not (yet) availabl ...
... recipient ecosystems, they may have secondary spread and they may become invasive. A comparative analysis of similarities and differences may provide valuable insights; as a common starting point, we should all agree that we have to lean on models as long as the empirical data are not (yet) availabl ...
Symbiosis Stories!
... Damselfish/ Sea Anemone The anemone provides a safe habitat for the damselfish since the fish exhibits a special tolerance to the sting of the anemone. At the same time, the fish removes debris from the anemone and acts as a colorful lure to attract fish to the anemone on which it can prey. Affect o ...
... Damselfish/ Sea Anemone The anemone provides a safe habitat for the damselfish since the fish exhibits a special tolerance to the sting of the anemone. At the same time, the fish removes debris from the anemone and acts as a colorful lure to attract fish to the anemone on which it can prey. Affect o ...
PDF file - University of Washington
... rates ofdamage appears to cause the demise ofthis species in the autumn. Parasitic larval sea anemones Peachia quinquecapitataMcMurrich, 1913 are sometimes seen on Aequorea, but the infestation rate was never over lolo. Aequorea medusae are harvested for their bioluminescent protein, aequorin, in th ...
... rates ofdamage appears to cause the demise ofthis species in the autumn. Parasitic larval sea anemones Peachia quinquecapitataMcMurrich, 1913 are sometimes seen on Aequorea, but the infestation rate was never over lolo. Aequorea medusae are harvested for their bioluminescent protein, aequorin, in th ...
global amphibian declines: a review of some current hypotheses
... both North and South America. Proof that disease causes substantial declines is difficult to establish and requires more data than is currently available. Habitat Destruction and Alteration Direct habitat destruction usually is cited as the most significant anthropogenic cause of amphibian populatio ...
... both North and South America. Proof that disease causes substantial declines is difficult to establish and requires more data than is currently available. Habitat Destruction and Alteration Direct habitat destruction usually is cited as the most significant anthropogenic cause of amphibian populatio ...
Comparison of species sensitivity distributions based on population
... organisms are adapted from long to this pollutant. Hence, phenotypes more protective for the life history traits with the greater impact on their fitness (and hence on population dynamics at the population level) were selected in the past. For instance, the sensitivity of C. riparius life cycle par ...
... organisms are adapted from long to this pollutant. Hence, phenotypes more protective for the life history traits with the greater impact on their fitness (and hence on population dynamics at the population level) were selected in the past. For instance, the sensitivity of C. riparius life cycle par ...
Nomination to list or delist a key threatening processes under the
... i.e., excludes unsuitable and unoccupied habitat), or the area of suitable habitat (the area within the total range that includes occupied and unoccupied suitable habitat, but excludes unsuitable habitat). The scale at which a geographic distribution is estimated should be appropriate to the biology ...
... i.e., excludes unsuitable and unoccupied habitat), or the area of suitable habitat (the area within the total range that includes occupied and unoccupied suitable habitat, but excludes unsuitable habitat). The scale at which a geographic distribution is estimated should be appropriate to the biology ...
Intercontinental biotic invasions: what can we learn from native
... et al. 2001). These results suggest that changes in population and genetic structure from native to exotic habitats can shed light on the causes of invasiveness. However, although there is an increasing trend of comparative studies on invasives in their native and introduced ranges, those simultaneo ...
... et al. 2001). These results suggest that changes in population and genetic structure from native to exotic habitats can shed light on the causes of invasiveness. However, although there is an increasing trend of comparative studies on invasives in their native and introduced ranges, those simultaneo ...
Evolutionary consequences of changes in species` geographical
... Alluding to Darwin who used ‘‘permanent varieties’’ for species, there is not enough time for the varieties to become permanent. By an analogous argument, Diamond explained patterns in island endemism in land birds (32). Small islands or archipelagos with high population extinction rates produce few ...
... Alluding to Darwin who used ‘‘permanent varieties’’ for species, there is not enough time for the varieties to become permanent. By an analogous argument, Diamond explained patterns in island endemism in land birds (32). Small islands or archipelagos with high population extinction rates produce few ...
Evolutionary consequences of changes in species` geographical
... Alluding to Darwin who used ‘‘permanent varieties’’ for species, there is not enough time for the varieties to become permanent. By an analogous argument, Diamond explained patterns in island endemism in land birds (32). Small islands or archipelagos with high population extinction rates produce few ...
... Alluding to Darwin who used ‘‘permanent varieties’’ for species, there is not enough time for the varieties to become permanent. By an analogous argument, Diamond explained patterns in island endemism in land birds (32). Small islands or archipelagos with high population extinction rates produce few ...
Maintaining a landscape that facilitates range shifts for terrestrial
... between climate-forced range change and low likelihood of finding distant habitats to colonize, ultimately resulting in increased extinction rates (Walther et al. 2002). This has been found to be the case globally for some bumblebee species no longer found in the southern part of their historic ran ...
... between climate-forced range change and low likelihood of finding distant habitats to colonize, ultimately resulting in increased extinction rates (Walther et al. 2002). This has been found to be the case globally for some bumblebee species no longer found in the southern part of their historic ran ...
Implications of changing species definitions for
... Issues in the Endangered Species Act 1995, Mallet 1995, Staley 1997, Blaxter 2004). Microbiologists, for instance, simply set an arbitrary level of overlap in DNA, 70%, to define species. By this definition, chimpanzees and humans belong to a single species. As it is, only 6,000 species of bacteria ...
... Issues in the Endangered Species Act 1995, Mallet 1995, Staley 1997, Blaxter 2004). Microbiologists, for instance, simply set an arbitrary level of overlap in DNA, 70%, to define species. By this definition, chimpanzees and humans belong to a single species. As it is, only 6,000 species of bacteria ...
Appropriate Use of NatureServe Conservation Status Assessments
... These agencies consider NatureServe status ranks, and the documentation that supports them, as a key input for making official determinations about a species' need for legal protection. However, NatureServe status assessment procedures have different criteria, evidence requirements, purposes and tax ...
... These agencies consider NatureServe status ranks, and the documentation that supports them, as a key input for making official determinations about a species' need for legal protection. However, NatureServe status assessment procedures have different criteria, evidence requirements, purposes and tax ...
Lesson 3 - Kingsborough Community College
... a. Members of the same species are all morphologically similar. b. Members of the same species are all genetically identical. c. Members of the same species look almost exactly alike. d. For asexually reproducing organisms, members of the same species are whatever an expert says they are. e. Members ...
... a. Members of the same species are all morphologically similar. b. Members of the same species are all genetically identical. c. Members of the same species look almost exactly alike. d. For asexually reproducing organisms, members of the same species are whatever an expert says they are. e. Members ...
Interrelation of geomorphology and fauna of Lavrado region in
... These open areas comprise several landscapes, such as plains, plateaus, hills and mountains. Associated with these geomorphological features there occur the scrubs, herbs, grasses and cactacean adapted to these physical formations, constituting very particular habitats where can live and reproduce d ...
... These open areas comprise several landscapes, such as plains, plateaus, hills and mountains. Associated with these geomorphological features there occur the scrubs, herbs, grasses and cactacean adapted to these physical formations, constituting very particular habitats where can live and reproduce d ...
Neelanarayanan Technique for Owl prey 1569 Bell MT
... cats at the apex of food chain in the ecosystem and the least abundant of all large mammals in any habitat. Large carnivores are sensitive indicators of habitat quality and may be studied at greater profit to gauge the health and extent of an environment to be preserved (Eisenberg, 1980). Foraging e ...
... cats at the apex of food chain in the ecosystem and the least abundant of all large mammals in any habitat. Large carnivores are sensitive indicators of habitat quality and may be studied at greater profit to gauge the health and extent of an environment to be preserved (Eisenberg, 1980). Foraging e ...
Distribution and ecology of copepods in mountainous regions of the
... ranging from acid bog ponds to alkaline karst waters and from small temporary puddles to deep lakes. The altitudinal range comprised all mountainous regions from the montane (1290 m a.s.l.) to the alpine (2886 m a.s.l.) zone. Forty-four species were recorded, with the harpacticoids being the richest ...
... ranging from acid bog ponds to alkaline karst waters and from small temporary puddles to deep lakes. The altitudinal range comprised all mountainous regions from the montane (1290 m a.s.l.) to the alpine (2886 m a.s.l.) zone. Forty-four species were recorded, with the harpacticoids being the richest ...
Specific research objectives
... have adapted to the wide range of environments (Crawford et al. 1997). Other fact contributing to the high rate of evolution of species is that the environment on islands has not changed much since the rise of islands, while on mainland further evolution of species can be limited by repeated changes ...
... have adapted to the wide range of environments (Crawford et al. 1997). Other fact contributing to the high rate of evolution of species is that the environment on islands has not changed much since the rise of islands, while on mainland further evolution of species can be limited by repeated changes ...
Conservation status of Hooded Plover in New South Wales
... Australasian genus with one other species in New Zealand. The population in NSW belongs to the nominate eastern subspecies T. r. rubricollis, inhabiting the marine littoral zone; it is considered nationally Vulnerable (Garnett & Crowley 2000). The Western Australian subspecies T. r. tregellasi Mathe ...
... Australasian genus with one other species in New Zealand. The population in NSW belongs to the nominate eastern subspecies T. r. rubricollis, inhabiting the marine littoral zone; it is considered nationally Vulnerable (Garnett & Crowley 2000). The Western Australian subspecies T. r. tregellasi Mathe ...
Temporal variability in the Abra alba community determined by
... and mud content (volume percentage b 64 μm) were used as granulometric variables. After exclusion of species that were not sampled quantitatively (e.g. hyperbenthic and extremely rare taxa) and lumping of species to genera or family level, because of inconsistent identification throughout the differ ...
... and mud content (volume percentage b 64 μm) were used as granulometric variables. After exclusion of species that were not sampled quantitatively (e.g. hyperbenthic and extremely rare taxa) and lumping of species to genera or family level, because of inconsistent identification throughout the differ ...