Invasive species: a global concern bubbling to the
... their introduction unless they are proven otherwise; but of course the expansion of global trade means that numerous species are sneaking in under our radar screen. Finally, perhaps the main route for the spread of aquatic IAS is transport in ballast water, leading to a major international programme ...
... their introduction unless they are proven otherwise; but of course the expansion of global trade means that numerous species are sneaking in under our radar screen. Finally, perhaps the main route for the spread of aquatic IAS is transport in ballast water, leading to a major international programme ...
Evolutionary action of tropical animals on the reproduction of plants
... dehiscent fruits and exposed seeds which retain the sarcotesta. In many Ranales, Liliiflores, Euphorbiaceae, Leguminoseae etc, this is an adaptation to ornithochory (bird-dispersal). I n other plants the sarcotesta can remain covered by the pericarp, thus being more suitable to mammals. Both of thes ...
... dehiscent fruits and exposed seeds which retain the sarcotesta. In many Ranales, Liliiflores, Euphorbiaceae, Leguminoseae etc, this is an adaptation to ornithochory (bird-dispersal). I n other plants the sarcotesta can remain covered by the pericarp, thus being more suitable to mammals. Both of thes ...
(1999) - The conservation of brackish
... pure freshwater, is lack of time since the last period of mortality (Barnes, 1994a). This section of the estuarine salinity gradient inhabited by any given species is labile and will only be in equilibrium when the gradient itself is unchanging; however, such a state rarely occurs in interface envir ...
... pure freshwater, is lack of time since the last period of mortality (Barnes, 1994a). This section of the estuarine salinity gradient inhabited by any given species is labile and will only be in equilibrium when the gradient itself is unchanging; however, such a state rarely occurs in interface envir ...
Estimating environmental damage in freshwater
... each station. This procedure includes one possible method. Identifying freshwater invertebrates is quite hard at first, but it soon becomes easier with a bit of practice. Health and safety Full risk assessment is essential before any work is undertaken. If possible, this should include an initial re ...
... each station. This procedure includes one possible method. Identifying freshwater invertebrates is quite hard at first, but it soon becomes easier with a bit of practice. Health and safety Full risk assessment is essential before any work is undertaken. If possible, this should include an initial re ...
word version of study questions
... 44. Name two types of competition. How do they differ? 45. What is meant by 'density-dependence' and how can it help explain why populations do not continue to grow forever? Draw a graph showing what density-dependence would look like for density versus birth rate and density versus mortality rate. ...
... 44. Name two types of competition. How do they differ? 45. What is meant by 'density-dependence' and how can it help explain why populations do not continue to grow forever? Draw a graph showing what density-dependence would look like for density versus birth rate and density versus mortality rate. ...
BIO 150
... ecological process. There are several basic components to natural selection. What are they? Which one is the ecological aspect? How does the process produce a match between organisms and their environments (i.e. why is it that organisms are so darn good at solving the ecological problems they face?) ...
... ecological process. There are several basic components to natural selection. What are they? Which one is the ecological aspect? How does the process produce a match between organisms and their environments (i.e. why is it that organisms are so darn good at solving the ecological problems they face?) ...
Breeding activity patterns, reproductive modes, and habitat use by
... Data were collected monthly from January 1995 to December 1998 (except during four months: December 1997, February, April, and June 1998), with a minimum of four consecutive days per month in the field. The reproductive period of each species was determined based on calling males observed or heard d ...
... Data were collected monthly from January 1995 to December 1998 (except during four months: December 1997, February, April, and June 1998), with a minimum of four consecutive days per month in the field. The reproductive period of each species was determined based on calling males observed or heard d ...
Effects on Species` Conservation of Reinterpreting the Phrase
... as endangered under the ESA in part because they were threatened in a SPOIR (e.g., FWS 1990, 1995, 2000). On 16 March 2007, the solicitor of the U.S. Department of Interior issued a memorandum substantially redefining the agency’s position on SPOIR (U.S. Department of the Interior 2007). The solicit ...
... as endangered under the ESA in part because they were threatened in a SPOIR (e.g., FWS 1990, 1995, 2000). On 16 March 2007, the solicitor of the U.S. Department of Interior issued a memorandum substantially redefining the agency’s position on SPOIR (U.S. Department of the Interior 2007). The solicit ...
Testimony of Mr
... genetically diverse and may be from a very small founding population. It also tells us that the genetic origin of these wild pythons are not from the same geographic area as what exists in the pet trade today, but that they are from the same geographic area as those present in south Florida faciliti ...
... genetically diverse and may be from a very small founding population. It also tells us that the genetic origin of these wild pythons are not from the same geographic area as what exists in the pet trade today, but that they are from the same geographic area as those present in south Florida faciliti ...
ECOLOGY
... Organism - an individual living thing. A species is a group of organisms that can mate to produce fertile offspring. Every organism is a member of a species. Population – all the members of the same species that LIVE in the same place at the same time Community – a group of various species that live ...
... Organism - an individual living thing. A species is a group of organisms that can mate to produce fertile offspring. Every organism is a member of a species. Population – all the members of the same species that LIVE in the same place at the same time Community – a group of various species that live ...
The effect of grazing on plant species richness on the Qinghai
... ecological theories of species diversity to land management has become a research and ...
... ecological theories of species diversity to land management has become a research and ...
Science Express Logo Report
... could potentially live in lower-productivity sites was more or less nested within the pool of species that could potentially live in higher-productivity sites. Although the generality of this specific mechanism in other ecosystems remains to be elucidated, I would argue that it is likely to be a rat ...
... could potentially live in lower-productivity sites was more or less nested within the pool of species that could potentially live in higher-productivity sites. Although the generality of this specific mechanism in other ecosystems remains to be elucidated, I would argue that it is likely to be a rat ...
species
... of biological classification. It can be loosely defined as a group of individual organisms that have very similar appearance, anatomy, physiology and genetic composition. Species include mammals, plants, corals, fungi, insects, birds, fish or a sponge (or any one of a gazillion other forms that life ...
... of biological classification. It can be loosely defined as a group of individual organisms that have very similar appearance, anatomy, physiology and genetic composition. Species include mammals, plants, corals, fungi, insects, birds, fish or a sponge (or any one of a gazillion other forms that life ...
Brown 2008 introduced_mammals_on_st._martin
... on St. Martin. On St. Kitts, it is widely speculated that the introduction of the green vervet monkey caused the eradication of the endemic St. Kitts Bullfinch (Loxigilla portoricensus grandis) (Rafaelle 1977). This species has the potential to cause major declines in bird populations on St. Martin. ...
... on St. Martin. On St. Kitts, it is widely speculated that the introduction of the green vervet monkey caused the eradication of the endemic St. Kitts Bullfinch (Loxigilla portoricensus grandis) (Rafaelle 1977). This species has the potential to cause major declines in bird populations on St. Martin. ...
Trophic resource partitioning within a shorebird community feeding
... of prey species (Nebel, 2005; Nebel, 2011). Species should differ in selection of prey of different sizes, with larger-bodied species feeding on larger prey of wider size range and small-bodied species feeding on smaller prey with less variability in their selection. Different methods such as stomac ...
... of prey species (Nebel, 2005; Nebel, 2011). Species should differ in selection of prey of different sizes, with larger-bodied species feeding on larger prey of wider size range and small-bodied species feeding on smaller prey with less variability in their selection. Different methods such as stomac ...
II. E O S
... types or other rare communities that are nested within a forested landscape. Additionally, many rare, declining, and wide ranging species depend on forests as habitat for nesting, shelter, foraging, or resting during migration. And there are other, more common wildlife species for which forests play ...
... types or other rare communities that are nested within a forested landscape. Additionally, many rare, declining, and wide ranging species depend on forests as habitat for nesting, shelter, foraging, or resting during migration. And there are other, more common wildlife species for which forests play ...
community assembly and structure of tropical leaf
... was only weakly influenced by biotic interactions, and therefore is most likely not the sole result of present species interactions. Non-metric multidimensional scaling and quadratic regression analyses showed that particular species responded to certain habitat characteristics, in particular the pr ...
... was only weakly influenced by biotic interactions, and therefore is most likely not the sole result of present species interactions. Non-metric multidimensional scaling and quadratic regression analyses showed that particular species responded to certain habitat characteristics, in particular the pr ...
Interrelation of geomorphology and fauna of Lavrado region in
... local people with the landscape, and by a characteristic local fauna and flora adapted to the lavrado ecosystem (Nascimento 1998). This open area is formed by peculiar geomorphological features, such as boulders, alluvial plains, lakes and gallery forests along the rivers. Isolated patches of forest ...
... local people with the landscape, and by a characteristic local fauna and flora adapted to the lavrado ecosystem (Nascimento 1998). This open area is formed by peculiar geomorphological features, such as boulders, alluvial plains, lakes and gallery forests along the rivers. Isolated patches of forest ...
of the competition kernel a(x)
... there are more opportunities for speciation there are fewer hazards and catastrophes more competitors can be packed closely climate is benign climate is more stable the environment is more complex (more readily subdivided) the environment is more productive there is heavy predation (giving low abund ...
... there are more opportunities for speciation there are fewer hazards and catastrophes more competitors can be packed closely climate is benign climate is more stable the environment is more complex (more readily subdivided) the environment is more productive there is heavy predation (giving low abund ...
Laubscher_Charles_P_Koehorst_Robin_R_AppScie_2012.doc
... reduce impacts, but should also actively contribute to the health and quality of the natural attractions which they visit. It has been discussed by Scheyvens (1999) that eco-tourism can have a disempowering effect upon local communities. If land that is destined for eco-tourism is restricted for pur ...
... reduce impacts, but should also actively contribute to the health and quality of the natural attractions which they visit. It has been discussed by Scheyvens (1999) that eco-tourism can have a disempowering effect upon local communities. If land that is destined for eco-tourism is restricted for pur ...
Dynamic fragility of oceanic coral reef ecosystems
... and varying habitat characteristics for small species, often resulting in high specialization (26). Loss of this habitat results in increased competition over the remaining space and increased susceptibility to predation (26), and may also increase the efficiency of fishing. Similarly, corallivorous ...
... and varying habitat characteristics for small species, often resulting in high specialization (26). Loss of this habitat results in increased competition over the remaining space and increased susceptibility to predation (26), and may also increase the efficiency of fishing. Similarly, corallivorous ...
Eradication of alien invasive species: surprise effects and
... Achyranthes aspersa became visibly more prominent over large parts of the island (Fig. 3). ...
... Achyranthes aspersa became visibly more prominent over large parts of the island (Fig. 3). ...
Biological Indicators A
... However, the most common algae in the Rideau were cryptophytes, bi-flagellated algae that are typically found in “clean” waters. However, in the lower section of the Rideau, a few species can be found that are more typical of nutrient-enriched systems such as in degraded European rivers. Aquatic pla ...
... However, the most common algae in the Rideau were cryptophytes, bi-flagellated algae that are typically found in “clean” waters. However, in the lower section of the Rideau, a few species can be found that are more typical of nutrient-enriched systems such as in degraded European rivers. Aquatic pla ...
3 8 quiz, community interactions, and ecological succession
... c. Carbon moves up the food chain when organisms are eaten d. CO2 in the atmosphere 3. List the steps required for nitrogen to go from the atmosphere into plants and animals. ...
... c. Carbon moves up the food chain when organisms are eaten d. CO2 in the atmosphere 3. List the steps required for nitrogen to go from the atmosphere into plants and animals. ...
Interspecific Competition Outline Intraspecific competition = density
... The outcome will be competitive exclusion, with one species at zero and the other at K, but the 'winner' depends on initial numbers of each species. (Fig 12.3C Pianka) B. If each species limits its own growth more than it limits the other species' growth, stable coexistence (Kw > αwbKb and Kb > αbwK ...
... The outcome will be competitive exclusion, with one species at zero and the other at K, but the 'winner' depends on initial numbers of each species. (Fig 12.3C Pianka) B. If each species limits its own growth more than it limits the other species' growth, stable coexistence (Kw > αwbKb and Kb > αbwK ...
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.