Evaluating condition-specific and asymmetric competition in a
... metamorphosis in H. femoralis, but in both species these interactions were only apparent at high densities and high pH levels. Taniguchi and Nakano (2000) found evidence of temperature-mediated competitive dominance in salmonid fishes, with a high-elevation species being dominant in cool water and a ...
... metamorphosis in H. femoralis, but in both species these interactions were only apparent at high densities and high pH levels. Taniguchi and Nakano (2000) found evidence of temperature-mediated competitive dominance in salmonid fishes, with a high-elevation species being dominant in cool water and a ...
An Experimental Test of Darwin`s Naturalization Hypothesis
... hypothesis. First, all these studies have assumed high niche similarity between closely related species without directly testing for it. Convergent evolution, if present (e.g., Losos et al. 2003), may result in high similarity between distantly related species that can confound the relationship betw ...
... hypothesis. First, all these studies have assumed high niche similarity between closely related species without directly testing for it. Convergent evolution, if present (e.g., Losos et al. 2003), may result in high similarity between distantly related species that can confound the relationship betw ...
A World of Difference
... As human populations grow, we require more human habitat for homes, roads, farmland, etc. To create more human habitat, we use land that has been home to other species of plants and animals. This can alter the delicate web of life whereby each species depends on other species to survive. It is estim ...
... As human populations grow, we require more human habitat for homes, roads, farmland, etc. To create more human habitat, we use land that has been home to other species of plants and animals. This can alter the delicate web of life whereby each species depends on other species to survive. It is estim ...
Woma
... The woma is generally considered nocturnal. However, it can sometimes be encountered basking in the sun. Unlike other types of pythons which are skilled climbers, the woma is a ground dweller. It takes shelter within hollow logs, animal burrows or thick herbage during the day. In the evening and at ...
... The woma is generally considered nocturnal. However, it can sometimes be encountered basking in the sun. Unlike other types of pythons which are skilled climbers, the woma is a ground dweller. It takes shelter within hollow logs, animal burrows or thick herbage during the day. In the evening and at ...
Do subordinate species punch above their weight? Evidence from
... interstitial (Keddy et al., 1994), minor (Walker et al., 1999), redundant (Rastetter & Shaver, 1996) or low abundant species. Dominant and subordinate species intrinsically exist, as demonstrated by Olff & Bakker (1998), through a statistical test on field data. Indeed, when considering a habitat as ...
... interstitial (Keddy et al., 1994), minor (Walker et al., 1999), redundant (Rastetter & Shaver, 1996) or low abundant species. Dominant and subordinate species intrinsically exist, as demonstrated by Olff & Bakker (1998), through a statistical test on field data. Indeed, when considering a habitat as ...
WATER FRAMEWORK DIRECTIVE – Reference Conditions and Eutrophication Impacts in Irish Rivers (2000-FS-2-M1)
... found to be univoltine. The life-cycle analyses in this study ...
... found to be univoltine. The life-cycle analyses in this study ...
Does non-native white sweetclover impact Alaskan floodplain plant
... Overwintering survival of S. alaxensis ...
... Overwintering survival of S. alaxensis ...
Dominant Species and Diversity: Linking Relative Abundance to
... bias, we redid the estimates, restricting all species to invasion into complete removal plots only. These measures were strongly correlated (r p 0.94, P ! .0001), so we report only the first. Species’ competitive abilities were not measured directly but rather inferred from a 10-year community ferti ...
... bias, we redid the estimates, restricting all species to invasion into complete removal plots only. These measures were strongly correlated (r p 0.94, P ! .0001), so we report only the first. Species’ competitive abilities were not measured directly but rather inferred from a 10-year community ferti ...
Cuon alpinus, Dhole
... is under preparation, and a proposal to list the species as a fully protected species is under discussion. In India, the dhole is protected under Schedule 2 of the Wildlife Act of 1972 (permission is required to kill any individual unless in self defence or if an individual is a man killer). The cre ...
... is under preparation, and a proposal to list the species as a fully protected species is under discussion. In India, the dhole is protected under Schedule 2 of the Wildlife Act of 1972 (permission is required to kill any individual unless in self defence or if an individual is a man killer). The cre ...
Diversity-stability hypothesis
... (Goodman 1975). But the coup de grace came from a purely theoretical exercise, on the basis of which May claimed that "simple mathematical models with many species are in general less stable than the corresponding simple mathematical models with few species." (1973, p. 49; italics added) I say "cla ...
... (Goodman 1975). But the coup de grace came from a purely theoretical exercise, on the basis of which May claimed that "simple mathematical models with many species are in general less stable than the corresponding simple mathematical models with few species." (1973, p. 49; italics added) I say "cla ...
Including species interactions in risk assessments for global change
... (Davis et al., 1998). This is a species data issue and there is a need for more systematic recording of seasonal presence and absence. If the seasonal mobility of the species is known, it is feasible with existing approaches to simulate its seasonal variation in geographical distribution. Currently, ...
... (Davis et al., 1998). This is a species data issue and there is a need for more systematic recording of seasonal presence and absence. If the seasonal mobility of the species is known, it is feasible with existing approaches to simulate its seasonal variation in geographical distribution. Currently, ...
Ecological Succession:
... Studying how ecological communities respond to change … • Ecological communities = the plants and animals found in an area. • Succession = Sequence of communities a region goes through over time. • Change can occur for many reasons: new resources, disturbances, and biotic changes. Sequence of commu ...
... Studying how ecological communities respond to change … • Ecological communities = the plants and animals found in an area. • Succession = Sequence of communities a region goes through over time. • Change can occur for many reasons: new resources, disturbances, and biotic changes. Sequence of commu ...
Plant traits and biochemical cycling on land
... *** Immigration/ emigration on short and long spatial and time scales ...
... *** Immigration/ emigration on short and long spatial and time scales ...
A conceptual framework for marine biodiversity and ecosystem
... to remain unmodified over the long term. For example, the Baltic Sea was formed only after the last glaciation some 10,000 years ago and gained its current brackish water conditions no more than 7000 years ago; it is still undergoing dramatic abiotic and biotic changes (Voipio 1981). Change can be o ...
... to remain unmodified over the long term. For example, the Baltic Sea was formed only after the last glaciation some 10,000 years ago and gained its current brackish water conditions no more than 7000 years ago; it is still undergoing dramatic abiotic and biotic changes (Voipio 1981). Change can be o ...
The silviculture of conifers in Great Britain
... practice. However they all demonstrated that, in healthy established stands, productivity was less related to soil conditions than climate. Inadequate meteorological data meant that climatic effects had to be expressed in surrogate terms, such as elevation (e.g. Malcolm and Studholme, 1972). Subsequ ...
... practice. However they all demonstrated that, in healthy established stands, productivity was less related to soil conditions than climate. Inadequate meteorological data meant that climatic effects had to be expressed in surrogate terms, such as elevation (e.g. Malcolm and Studholme, 1972). Subsequ ...
Concepts of species and modes of speciation
... into consideration in classification. His idea was also a kind of typological or essentialism as far as species is concerned. Linnaeus (1707–1778), a great taxonomist and sometimes called the ‘father of taxonomy’, adhered to downward classification. His thinking was that of an essentialist for whom ...
... into consideration in classification. His idea was also a kind of typological or essentialism as far as species is concerned. Linnaeus (1707–1778), a great taxonomist and sometimes called the ‘father of taxonomy’, adhered to downward classification. His thinking was that of an essentialist for whom ...
Conference Programme
... Temminck‟s Ground Pangolin is a shy, secretive and solitary species occurring across southern and East Africa. We constructed a molecular phylogeny using three mitochondrial gene regions for 25 samples and found high levels of genetic variation within populations. Our results suggest that South Afri ...
... Temminck‟s Ground Pangolin is a shy, secretive and solitary species occurring across southern and East Africa. We constructed a molecular phylogeny using three mitochondrial gene regions for 25 samples and found high levels of genetic variation within populations. Our results suggest that South Afri ...
Northern quoll - WWF
... Communities, scientists and governments are working together to coordinate the research and management effort. The Threatened Species Network, a communitybased program of the Australian Government and WWFAustralia, recently provided funding for Traditional Owners to survey Maria Island in the Northe ...
... Communities, scientists and governments are working together to coordinate the research and management effort. The Threatened Species Network, a communitybased program of the Australian Government and WWFAustralia, recently provided funding for Traditional Owners to survey Maria Island in the Northe ...
Reproductive Isolation among Acropora Species
... releasing gamete bundles 2 nights before the full moon, the night of full moon, and 1 night after the full moon. More than 1 colony of each species spawning synchronously was observed for 3 species on the 2nd night after the full moon. However, synchronous spawning of 4 species was only observed on ...
... releasing gamete bundles 2 nights before the full moon, the night of full moon, and 1 night after the full moon. More than 1 colony of each species spawning synchronously was observed for 3 species on the 2nd night after the full moon. However, synchronous spawning of 4 species was only observed on ...
How parasites divide resources: a test of the niche apportionment
... The null models used in these earlier studies may be wrong, which would explain the lack of consistent results. Alternatively, general patterns may exist but not be apparent in analyses based on either the presence or abundance of parasite species. The biomass of different parasite species in a comm ...
... The null models used in these earlier studies may be wrong, which would explain the lack of consistent results. Alternatively, general patterns may exist but not be apparent in analyses based on either the presence or abundance of parasite species. The biomass of different parasite species in a comm ...
Behavioral ecology and evolution
... Islands and Speciation • Endemism: A species found no where else – Common among island archipelagos, because they are isolated. • The island scrub jay, Aphelecoma insularis, found only on Santa Cruz Island, differs from the western scrub jay, Aphelecoma californica, by its larger size and sto ...
... Islands and Speciation • Endemism: A species found no where else – Common among island archipelagos, because they are isolated. • The island scrub jay, Aphelecoma insularis, found only on Santa Cruz Island, differs from the western scrub jay, Aphelecoma californica, by its larger size and sto ...
PDF
... Note that using the 5% hottest/coolest grid cells from the atlas to estimate thermal maxima/minima, respectively, involves the same proportion of the total range for every species. A potential bias in this approach is that a species with a larger thermal range will usually occupy a larger total numb ...
... Note that using the 5% hottest/coolest grid cells from the atlas to estimate thermal maxima/minima, respectively, involves the same proportion of the total range for every species. A potential bias in this approach is that a species with a larger thermal range will usually occupy a larger total numb ...
Ranking Lepidopteran Use of Native Versus Introduced Plants
... lineages locally (Fox & Morrow 1981). Thus, most lepidopteran populations may be functionally constrained to exploiting a limited group of plants. Such restricted interactions typically require evolutionary time spans to develop (Kennedy & Southwood 1984) and have honed the ability of specialists to ...
... lineages locally (Fox & Morrow 1981). Thus, most lepidopteran populations may be functionally constrained to exploiting a limited group of plants. Such restricted interactions typically require evolutionary time spans to develop (Kennedy & Southwood 1984) and have honed the ability of specialists to ...
When an `invasive` fish species fails to invade! Example of the
... waters, whereas in England the species rapidly populates open still water (Copp et al. 2005b) where it is known to undermine the genetic integrity of native crucian carp Carassius carassius (Hänfling et al. 2005, Smartt 2007). Similarly, pumpkinseed and largemouth bass are considered to be invasive ...
... waters, whereas in England the species rapidly populates open still water (Copp et al. 2005b) where it is known to undermine the genetic integrity of native crucian carp Carassius carassius (Hänfling et al. 2005, Smartt 2007). Similarly, pumpkinseed and largemouth bass are considered to be invasive ...
Oceanic pelagic prey of benthopelagic fish in the benthic boundary
... quently, scavenging of these pelagic species may have given rise to their occurrence at these excessive depths. Pelagic species are eaten by benthopelagic fish at depths corresponding to their daytime vertical distribution in the oceanic water column, or, in the case of a few species, at greater dep ...
... quently, scavenging of these pelagic species may have given rise to their occurrence at these excessive depths. Pelagic species are eaten by benthopelagic fish at depths corresponding to their daytime vertical distribution in the oceanic water column, or, in the case of a few species, at greater dep ...
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.