Survey of reptiles in and around St. Katherine, Sinai Peninsula
... 36o C (August) and in winter it gets cooler with a mean minimum temperature of 7.8 o C (February) (White et al., 2007). The area has an arid climate with mean annual rainfall of 60 mm/year with the addition of snow melt on higher mountain peaks, which can receive around 300 mm/ year (Grainger, 2003) ...
... 36o C (August) and in winter it gets cooler with a mean minimum temperature of 7.8 o C (February) (White et al., 2007). The area has an arid climate with mean annual rainfall of 60 mm/year with the addition of snow melt on higher mountain peaks, which can receive around 300 mm/ year (Grainger, 2003) ...
Do exotic beavers engineer differently in sub-Antarctic
... exclusively N. pumilio (3.71 ± 1.11 per plot) and N. betuloides (3.65 ± 1.48 per plot) seedlings in the understory. The average number of seedlings for both species was significantly reduced in beaver meadows to near zero (N. betuloides = 0.08 ± 0.06 and N. pumilio = 0.6 ± 0.2; t-test = 2.791, df = ...
... exclusively N. pumilio (3.71 ± 1.11 per plot) and N. betuloides (3.65 ± 1.48 per plot) seedlings in the understory. The average number of seedlings for both species was significantly reduced in beaver meadows to near zero (N. betuloides = 0.08 ± 0.06 and N. pumilio = 0.6 ± 0.2; t-test = 2.791, df = ...
Printer-friendly version - Weconnect
... Biodiversity is the 'variety of all life forms – the different plants, animals and micro-organisms, the genes they contain and the ecosystems of which they form part' (DSE 2012). Biodiversity underpins the health of connected natural and managed systems and provides ecosystem services that humans ca ...
... Biodiversity is the 'variety of all life forms – the different plants, animals and micro-organisms, the genes they contain and the ecosystems of which they form part' (DSE 2012). Biodiversity underpins the health of connected natural and managed systems and provides ecosystem services that humans ca ...
A trait database for Guianan rain forest trees permits intra
... the environmental conditions under which measurements are made; we refer to this as species plasticity. For example, foliar traits are often reported for ‘sun leaves’, but the definition of sun may include plants grown in pots under high transmission shadecloth and those in the field under open cond ...
... the environmental conditions under which measurements are made; we refer to this as species plasticity. For example, foliar traits are often reported for ‘sun leaves’, but the definition of sun may include plants grown in pots under high transmission shadecloth and those in the field under open cond ...
Ecology Section
... -Under ideal conditions with unlimited resources, a population will grow exponentially. (Reproduce as fast as bunny rabbits!) - Organisms that are introduced to new environments can grow exponentially for a time and change an ecosystem. This is especially true of invasive species. ...
... -Under ideal conditions with unlimited resources, a population will grow exponentially. (Reproduce as fast as bunny rabbits!) - Organisms that are introduced to new environments can grow exponentially for a time and change an ecosystem. This is especially true of invasive species. ...
Ecology Section - Olympic High School
... -Under ideal conditions with unlimited resources, a population will grow exponentially. (Reproduce as fast as bunny rabbits!) - Organisms that are introduced to new environments can grow exponentially for a time and change an ecosystem. This is especially true of invasive species. ...
... -Under ideal conditions with unlimited resources, a population will grow exponentially. (Reproduce as fast as bunny rabbits!) - Organisms that are introduced to new environments can grow exponentially for a time and change an ecosystem. This is especially true of invasive species. ...
54_DetailLectOut w Pictures
... The transfer of food energy up the trophic levels from its source in plants and other autotrophs (primary producers) through herbivores (primary consumers) to carnivores (secondary and tertiary consumers) and eventually to decomposers is called a food chain. In the 1920s, Oxford University biologist ...
... The transfer of food energy up the trophic levels from its source in plants and other autotrophs (primary producers) through herbivores (primary consumers) to carnivores (secondary and tertiary consumers) and eventually to decomposers is called a food chain. In the 1920s, Oxford University biologist ...
A Physical Basis of Evolution and Speculation on an
... systems which have little similarity to an ideal gas [1]. Entropy, unfortunately, became associated with disorder, the antithesis of complexity. How was it possible that biological systems appeared to increase their complexity, reduce disorder, when the 2nd law demanded its destruction? Many seeming ...
... systems which have little similarity to an ideal gas [1]. Entropy, unfortunately, became associated with disorder, the antithesis of complexity. How was it possible that biological systems appeared to increase their complexity, reduce disorder, when the 2nd law demanded its destruction? Many seeming ...
Screening of antimicrobial activities in red, green and brown
... As a consequence of an increasing demand for biodiversity in the screening programs seeking therapeutic drugs from natural products, there is now a greater interest in marine organisms, especially algae. The ability of seaweeds to produce secondary metabolites of potential interest has been extensiv ...
... As a consequence of an increasing demand for biodiversity in the screening programs seeking therapeutic drugs from natural products, there is now a greater interest in marine organisms, especially algae. The ability of seaweeds to produce secondary metabolites of potential interest has been extensiv ...
Buteo galapagoensis, Galapagos Hawk
... The most probable cause of the species's historical decline is persecution by humans (de Vries 1973), which still continues on Santa Cruz and south Isabela (H. Vargas and F. Cruz in litt. 2000) but is now a fairly uncommon practice elsewhere (D. Wiedenfeld in litt. 2012). The largest island, Isabela ...
... The most probable cause of the species's historical decline is persecution by humans (de Vries 1973), which still continues on Santa Cruz and south Isabela (H. Vargas and F. Cruz in litt. 2000) but is now a fairly uncommon practice elsewhere (D. Wiedenfeld in litt. 2012). The largest island, Isabela ...
Chapter 3: Ecosystems, Ecoregions and Biodiversity
... during the last ice age. After the glaciers melted the island emerged from beneath the ice devoid of most plant and animal life and was re-colonized by organisms from the nearby mainland. The predominantly westerly winds carried airborne plant seeds, and lichen, and moss spores onto the island. But ...
... during the last ice age. After the glaciers melted the island emerged from beneath the ice devoid of most plant and animal life and was re-colonized by organisms from the nearby mainland. The predominantly westerly winds carried airborne plant seeds, and lichen, and moss spores onto the island. But ...
Biogeographic Distribution Patterns of South American Amphibians
... Of the major biomes and/or morphoclimatic domains found in South America (e.g. Ab’Saber 1977; Veloso et al. 1991; Morrone 2002; IBGE 2004), only the Amazon forest can be recognized as a biogeographic unit for amphibians, while the remaining biomes (e.g. temperate forest, savanna, grasslands, desert, ...
... Of the major biomes and/or morphoclimatic domains found in South America (e.g. Ab’Saber 1977; Veloso et al. 1991; Morrone 2002; IBGE 2004), only the Amazon forest can be recognized as a biogeographic unit for amphibians, while the remaining biomes (e.g. temperate forest, savanna, grasslands, desert, ...
On Bird Species Diversity Author(s): Robert H. MacArthur and John
... diversity is a better measure than actual number of species, for the community with 99 of one and 1 of the other seems closer to the community with one species. Margalef (1957) has frequently used a similar measure in his plankton studies. In terms of this, the question becomes: "What is it about th ...
... diversity is a better measure than actual number of species, for the community with 99 of one and 1 of the other seems closer to the community with one species. Margalef (1957) has frequently used a similar measure in his plankton studies. In terms of this, the question becomes: "What is it about th ...
PMLevyCOLPEm Resource
... restored back to a higher quality wetland. These communities are characterized by a relatively low diversity and generally low quality wetlands. Instead of restoring back with planted pines, the area will see an increase in diversity by restoring with a mixture of hard wood species, increasing plant ...
... restored back to a higher quality wetland. These communities are characterized by a relatively low diversity and generally low quality wetlands. Instead of restoring back with planted pines, the area will see an increase in diversity by restoring with a mixture of hard wood species, increasing plant ...
Functional responses in resource-based mutualisms: a time scale
... mutualists, which are functions of the resources offered to the other species, also with diminishing returns. In their analyses, the resources that mediate benefits and costs are replaced by population abundances as if the species were the resources themselves. This assumption enables the graphical ...
... mutualists, which are functions of the resources offered to the other species, also with diminishing returns. In their analyses, the resources that mediate benefits and costs are replaced by population abundances as if the species were the resources themselves. This assumption enables the graphical ...
Here is Systematics
... keep in culture from an accession that you got out of the cracks in the sidewalk, you need to report that you studied plants in the species Bryum argentium. Other studies of similar physiological topics will be done with other organisms, and all of that information then becomes available for compari ...
... keep in culture from an accession that you got out of the cracks in the sidewalk, you need to report that you studied plants in the species Bryum argentium. Other studies of similar physiological topics will be done with other organisms, and all of that information then becomes available for compari ...
Biodiversity and ecosystem functioning: A mechanistic model
... effect on maximum species richness, SM, in the two cases. The inflowing nutrient concentration, R0, and the throughflow rate, q, both contribute to an increase in maximum species richness, because they contribute to increasing the amount of resources available to the community and the control of ext ...
... effect on maximum species richness, SM, in the two cases. The inflowing nutrient concentration, R0, and the throughflow rate, q, both contribute to an increase in maximum species richness, because they contribute to increasing the amount of resources available to the community and the control of ext ...
1A Chap 8,11,12 Guided Notes
... § Why? –Immigration rates are slower on small islands because they are smaller targets for potential colonizers. Extinction rates are faster on small islands because they have less resources and less diversity of habitats. ...
... § Why? –Immigration rates are slower on small islands because they are smaller targets for potential colonizers. Extinction rates are faster on small islands because they have less resources and less diversity of habitats. ...
Conservation/Restoration (only sections needed)
... Habitat Loss • Human alteration of habitat is the greatest threat to biodiversity throughout the biosphere (73% of all extinctions). • In almost all cases, habitat fragmentation and destruction lead to loss of biodiversity • For example – In Wisconsin, prairie occupies <0.1% of its original area – ...
... Habitat Loss • Human alteration of habitat is the greatest threat to biodiversity throughout the biosphere (73% of all extinctions). • In almost all cases, habitat fragmentation and destruction lead to loss of biodiversity • For example – In Wisconsin, prairie occupies <0.1% of its original area – ...
Trophic niche partitioning between two native and two exotic
... The introduction of exotic species is one of the most pervasive consequences of the increased human mobility. The most known negative effects are the decrease or extinction of natives. The common-genet, Genetta genetta, and the Egyptian mongoose, Herpestes ichneumon, were introduced in the Iberian P ...
... The introduction of exotic species is one of the most pervasive consequences of the increased human mobility. The most known negative effects are the decrease or extinction of natives. The common-genet, Genetta genetta, and the Egyptian mongoose, Herpestes ichneumon, were introduced in the Iberian P ...
Our indigenous species in the Ruamāhanga Whaitua summary
... must migrate through Lake Onoke twice during their life time. This influences the distribution of fish, as there are naturally less fish species as the distance increases from the coast because different fish have different ‘migratory drives’ to head inland and also differing abilities to negotiate ...
... must migrate through Lake Onoke twice during their life time. This influences the distribution of fish, as there are naturally less fish species as the distance increases from the coast because different fish have different ‘migratory drives’ to head inland and also differing abilities to negotiate ...
About AquaMaps: Creating standardized range maps of marine
... The AquaMaps solution: incorporation of non-point data about habitat usage The AquaMaps approach was developed specifically to deal with the problems encountered when attempting to map large-scale species distributions based on existing but fragmented and potentially non-representative occurrence da ...
... The AquaMaps solution: incorporation of non-point data about habitat usage The AquaMaps approach was developed specifically to deal with the problems encountered when attempting to map large-scale species distributions based on existing but fragmented and potentially non-representative occurrence da ...
Biology EOC Study Guide: Part 1, Ecology
... Evaluate the conditions necessary for rapid population growth (e.g., given adequate living and nonliving resources and no disease or predators, populations of an organism increase at rapid rates). Given ecosystem data, calculate the population density of an organism.*a ...
... Evaluate the conditions necessary for rapid population growth (e.g., given adequate living and nonliving resources and no disease or predators, populations of an organism increase at rapid rates). Given ecosystem data, calculate the population density of an organism.*a ...
The impacts of invasive plant species on the biodiversity of
... as naturalised (Martin et al. 2006). However, the number of non-native plant species per one-degree grid cell is generally lower in the rangelands than in non-rangeland areas in the south-east and south-west of the continent (SoEAC 1996). Different regions of the rangelands have different proportion ...
... as naturalised (Martin et al. 2006). However, the number of non-native plant species per one-degree grid cell is generally lower in the rangelands than in non-rangeland areas in the south-east and south-west of the continent (SoEAC 1996). Different regions of the rangelands have different proportion ...
Review of the Impact of Invasive Alien Species on Species under
... Aware that invasive alien species (IAS) have an impact on migratory species through predation, competition and genetic changes caused by hybridization, as well as through the transmission of diseases, impairment of breeding and by causing loss of habitat and resources crucial for migratory species; ...
... Aware that invasive alien species (IAS) have an impact on migratory species through predation, competition and genetic changes caused by hybridization, as well as through the transmission of diseases, impairment of breeding and by causing loss of habitat and resources crucial for migratory species; ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.