Ecological Importance of Large Herbivores in the
... within the clay soil KLEE plots and found that cattle suppressed grass-dwelling arthropods (captured in sweep nets) whereas megaherbivores (elephants and giraffes only) suppressed ground-dwelling arthropods (captured in pitfall traps). Goheen et al. (2004) used both pitfall traps and sweep nets and ...
... within the clay soil KLEE plots and found that cattle suppressed grass-dwelling arthropods (captured in sweep nets) whereas megaherbivores (elephants and giraffes only) suppressed ground-dwelling arthropods (captured in pitfall traps). Goheen et al. (2004) used both pitfall traps and sweep nets and ...
Scorpiones (Scorpions) - American Museum of Natural History
... Scorpions are the fifth-most diverse order of arachnids in number of described species, but the known diversity is grossly underestimated. Estimates of total diversity run as high as 7,000 species. There are two reasons for this underestimate. (1) Scorpions are cryptic, seasonal, habitat specific, a ...
... Scorpions are the fifth-most diverse order of arachnids in number of described species, but the known diversity is grossly underestimated. Estimates of total diversity run as high as 7,000 species. There are two reasons for this underestimate. (1) Scorpions are cryptic, seasonal, habitat specific, a ...
Petition to Add Bullfrogs to List of Restricted Species
... implicated in the declines of amphibians. 10 Bullfrogs act as both predators and competitors of California’s native wildlife, and can cause reproductive interference for other frog species. They also act as a disease vector and have been implicated in the introduction and spread of ranaviruses and ...
... implicated in the declines of amphibians. 10 Bullfrogs act as both predators and competitors of California’s native wildlife, and can cause reproductive interference for other frog species. They also act as a disease vector and have been implicated in the introduction and spread of ranaviruses and ...
Plant species traits are the predominant control on
... for long-term litter decomposition within biomes (Berg et al. 1993; Moore et al. 1999; Raich et al. 2006; Parton et al. 2007). In contrast, interspecific differences in green leaf traits and the subsequent quality of litter produced following leaf senescence are associated with the diversity of plan ...
... for long-term litter decomposition within biomes (Berg et al. 1993; Moore et al. 1999; Raich et al. 2006; Parton et al. 2007). In contrast, interspecific differences in green leaf traits and the subsequent quality of litter produced following leaf senescence are associated with the diversity of plan ...
Genetic analysis of aspen (Populus tremula L. and Populus
... contrasting environments offers possibilities to study of other aspects of ecology, such as adaptation (Hall et al. 2007; De Carvalho et al. 2010). Meanwhile, poplars also act as model in the field of genetics and genomics (Tuskan et al. 2006; Jansson and Douglas 2007). It is the first tree species ...
... contrasting environments offers possibilities to study of other aspects of ecology, such as adaptation (Hall et al. 2007; De Carvalho et al. 2010). Meanwhile, poplars also act as model in the field of genetics and genomics (Tuskan et al. 2006; Jansson and Douglas 2007). It is the first tree species ...
Biodiversity effects on ecosystem functioning: emerging issues and
... functioning has been rather limited. We therefore propose expanding the range of diversity facets that should be considered for manipulation in experimental studies (Table 1). Species richness is an important and readily quantified component of biodiversity. However, mechanisms by which diversity ma ...
... functioning has been rather limited. We therefore propose expanding the range of diversity facets that should be considered for manipulation in experimental studies (Table 1). Species richness is an important and readily quantified component of biodiversity. However, mechanisms by which diversity ma ...
Invasive Alien Plant Species Found in the Carolinian Zone
... The ranking system in the SERO report includes 5 categories, they are as follows: Category 1 is assigned to aggressive invasive exotic species that can dominate a site to exclude all other species and remain dominant on the site indefinitely. Eradication may be the only option for long-term success. ...
... The ranking system in the SERO report includes 5 categories, they are as follows: Category 1 is assigned to aggressive invasive exotic species that can dominate a site to exclude all other species and remain dominant on the site indefinitely. Eradication may be the only option for long-term success. ...
an audit of alien species in scotland
... In fulfilling these aims we have encountered two major problems. First, there is the very large number of alien vascular plants currently established in Scotland, considerably greater than we believed before starting the work. Most of these plants, except for some prominent nuisance species, have re ...
... In fulfilling these aims we have encountered two major problems. First, there is the very large number of alien vascular plants currently established in Scotland, considerably greater than we believed before starting the work. Most of these plants, except for some prominent nuisance species, have re ...
Biodiversity and aquatic ecosystem functioning
... Another interesting example that illustrates the studies being done in aquatic ecosystems of the relationships between biodiversity and ecosystem functioning is the work of Emmerson et al. (2001). This research has been performed in mesocosms containing a gradient of speciesrichness, using intertida ...
... Another interesting example that illustrates the studies being done in aquatic ecosystems of the relationships between biodiversity and ecosystem functioning is the work of Emmerson et al. (2001). This research has been performed in mesocosms containing a gradient of speciesrichness, using intertida ...
Trade-offs in community ecology: linking spatial scales and species
... A wide variety of limiting factors, and trade-offs among them, have been discussed as prerequisites for coexistence at local spatial scales (Fig. 1). Some of the most common, and potentially important, trade-offs among species include differential utilization of resources (i.e. different nutrients o ...
... A wide variety of limiting factors, and trade-offs among them, have been discussed as prerequisites for coexistence at local spatial scales (Fig. 1). Some of the most common, and potentially important, trade-offs among species include differential utilization of resources (i.e. different nutrients o ...
- Wiley Online Library
... priori to interact strongly may induce a considerable bias in our perception of how interactions structure communities. In this study, we assess the role of interactions and stochasticity in structuring an ecological community, focusing on species abundances and not just their presence or absence. F ...
... priori to interact strongly may induce a considerable bias in our perception of how interactions structure communities. In this study, we assess the role of interactions and stochasticity in structuring an ecological community, focusing on species abundances and not just their presence or absence. F ...
OFFICIAL TESTER PROGRAM HERE!
... 4:00 – 5:00 Distinguished Visitor’s Address Genetic insights into speciation by natural selection Dr. Dolph Schluter Our understanding of how new species form has undergone a major shift in recent decades, with natural (and sexual) selection now thought to play a predominant role. What are the genet ...
... 4:00 – 5:00 Distinguished Visitor’s Address Genetic insights into speciation by natural selection Dr. Dolph Schluter Our understanding of how new species form has undergone a major shift in recent decades, with natural (and sexual) selection now thought to play a predominant role. What are the genet ...
Murray Hardyhead Primefact - NSW Department of Primary Industries
... particularly in saline waters containing few other fish species. • They mostly feed on tiny crustaceans (plankton) and small aquatic insects such as mosquito larvae. • Individuals are mature at around 25-30 mm in length, or 5-8 months of age. • Murray Hardyhead has a prolonged spawning season from S ...
... particularly in saline waters containing few other fish species. • They mostly feed on tiny crustaceans (plankton) and small aquatic insects such as mosquito larvae. • Individuals are mature at around 25-30 mm in length, or 5-8 months of age. • Murray Hardyhead has a prolonged spawning season from S ...
Shifting dominance among Scarid species on reefs representing a
... non-targeted species, in order to reach a better understanding of how some specific compartments of the fish community may evolve following an external and chronic stress. Species of the Scarid family (parrotfish) occupy a privileged position among the species targeted by fishers in coral reef fishe ...
... non-targeted species, in order to reach a better understanding of how some specific compartments of the fish community may evolve following an external and chronic stress. Species of the Scarid family (parrotfish) occupy a privileged position among the species targeted by fishers in coral reef fishe ...
National Wilderness Steering Committee
... actively managed to restore them to a natural condition or to maintain the closest approximation of the natural condition in situations in which a truly natural system is no longer attainable. Prescribed burning and the control of ungulates when predators have been extirpated are two examples. The e ...
... actively managed to restore them to a natural condition or to maintain the closest approximation of the natural condition in situations in which a truly natural system is no longer attainable. Prescribed burning and the control of ungulates when predators have been extirpated are two examples. The e ...
Imported Pathogen: Woolly Adelgid Ecosystem Response
... remains viable only one growing season, although a few researchers have reported seed viability for up to four years. It is believed that on most sites, episodic establishment of hemlock occurs only infrequently, under unusual ...
... remains viable only one growing season, although a few researchers have reported seed viability for up to four years. It is believed that on most sites, episodic establishment of hemlock occurs only infrequently, under unusual ...
High vulnerability of ecosystem function and services to diversity
... locations. Taxa were considered primary targets if they were reported in more than half of surveys and in at least two of the four islands. The other reported fished species were considered secondary targets. For the species that were not mentioned in interviews with fishers, we used information rep ...
... locations. Taxa were considered primary targets if they were reported in more than half of surveys and in at least two of the four islands. The other reported fished species were considered secondary targets. For the species that were not mentioned in interviews with fishers, we used information rep ...
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.