Green Mountain National Forest Dorset-Peru Integrated Resource Area Non-Native Invasive Species Inventory
... forest (e.g. landings and beaver dams) were also infested disproportionally. The Forest Service could manage invasive species by removing existing populations with early detection and rapid response, checking and removing reoccurring species growth annually, and by educating the public on the danger ...
... forest (e.g. landings and beaver dams) were also infested disproportionally. The Forest Service could manage invasive species by removing existing populations with early detection and rapid response, checking and removing reoccurring species growth annually, and by educating the public on the danger ...
St Eustatius - Dutch Caribbean Nature Alliance
... the Lesser Antilles and Virgin Islands, 5 plant species have a distribution limited to only few islands and 3 plant species are endemic of Statia (Ipomoea sphenophylla, Gonolobus aloiensis, Eremothecella microcephalica) (Krings and Axelrod 2013, Rojer 1997, Sipman 2009). Of the 141 orchid species kn ...
... the Lesser Antilles and Virgin Islands, 5 plant species have a distribution limited to only few islands and 3 plant species are endemic of Statia (Ipomoea sphenophylla, Gonolobus aloiensis, Eremothecella microcephalica) (Krings and Axelrod 2013, Rojer 1997, Sipman 2009). Of the 141 orchid species kn ...
The tropical, the temperate and the arctic seas as media
... Coral reefs and coralline shelves are a special case, based as they are on sessile organisms building themselves up to heights where they can feed on pelagic fauna. An important feature is the intensive symbiosis of animals of coral reefs with uni cellular algae by which a shortcut in the foodweb is ...
... Coral reefs and coralline shelves are a special case, based as they are on sessile organisms building themselves up to heights where they can feed on pelagic fauna. An important feature is the intensive symbiosis of animals of coral reefs with uni cellular algae by which a shortcut in the foodweb is ...
disturbance moderates biodiversity–ecosystem
... uniformly over the working section of the stream. Larvae were given 10 min to colonize pore spaces before flow in the streams was gradually increased to 24 cm/ s (measured midchannel at half depth). Any larvae drifting out of the working section were captured in a drift net (Fig. 2), discarded, and ...
... uniformly over the working section of the stream. Larvae were given 10 min to colonize pore spaces before flow in the streams was gradually increased to 24 cm/ s (measured midchannel at half depth). Any larvae drifting out of the working section were captured in a drift net (Fig. 2), discarded, and ...
Nordic Society Oikos
... paper, we test for the existence of assembly rules within congeneric guilds of the Australian avifauna. Our analyses incorporated several key elements that have frequently been neglected in previous tests. First, we used a null model that reliably detects unusual aggregation or segregation of specie ...
... paper, we test for the existence of assembly rules within congeneric guilds of the Australian avifauna. Our analyses incorporated several key elements that have frequently been neglected in previous tests. First, we used a null model that reliably detects unusual aggregation or segregation of specie ...
Unit 4 : Ecosystems
... support large populations of herbivores even though there may be fewer algae than herbivores at any given moment. In contrast, land plants may take years to reach maturity, so an average carbon atom spends a longer residence time at the primary producer level on land than it does in a marine ecosyst ...
... support large populations of herbivores even though there may be fewer algae than herbivores at any given moment. In contrast, land plants may take years to reach maturity, so an average carbon atom spends a longer residence time at the primary producer level on land than it does in a marine ecosyst ...
First report of predation by a caiman (Paleosuchus trigonatus
... 2013. The caecilian (6.8 mm in largest diameter after fixation) was grasped in the anterior and medial portion of the body by the caiman, which succeeded with pulling it out of the muddy soil after few minutes. When handled for collection, the caiman did not release its prey. The caecilian and the c ...
... 2013. The caecilian (6.8 mm in largest diameter after fixation) was grasped in the anterior and medial portion of the body by the caiman, which succeeded with pulling it out of the muddy soil after few minutes. When handled for collection, the caiman did not release its prey. The caecilian and the c ...
pest risk assessment - Department of Primary Industries, Parks
... forage widely in sandy desert and claypans and will sometimes climb trees when disturbed. The lizards on Barrow Island are active throughout the year. Perenties feed on insects, reptiles, birds, small mammals and carrion. Large adults can predate on small kangaroos. They are opportunistic cannibals ...
... forage widely in sandy desert and claypans and will sometimes climb trees when disturbed. The lizards on Barrow Island are active throughout the year. Perenties feed on insects, reptiles, birds, small mammals and carrion. Large adults can predate on small kangaroos. They are opportunistic cannibals ...
Appendix 13.A. Wildlife of the St. Johns River Floodplain
... The crocodylia class has one well-known species in the floodplain, the American alligator (Alligator mississippiensis). Alligators must have access to the open waters of river channels, lakes, or canals. Open waters are important for mobility because swimming conserves the metabolic energy of this e ...
... The crocodylia class has one well-known species in the floodplain, the American alligator (Alligator mississippiensis). Alligators must have access to the open waters of river channels, lakes, or canals. Open waters are important for mobility because swimming conserves the metabolic energy of this e ...
Body size in ecological networks
... Box 2. Mutualistic networks: pollinators, seed-eaters and forbidden fruit Food webs are not the only type of ecological network, although they are the most familiar. Mutualistic interactions such as pollination and seed dispersal are common [59], but such networks are rarely studied to a similar dep ...
... Box 2. Mutualistic networks: pollinators, seed-eaters and forbidden fruit Food webs are not the only type of ecological network, although they are the most familiar. Mutualistic interactions such as pollination and seed dispersal are common [59], but such networks are rarely studied to a similar dep ...
Journal of Ethnobiology and Ethnomedicine
... In case of the Sekenani Maasai, the recent change from a nomadic to a more sedentary lifestyle has not, thus far lead to a dramatic loss of traditional plant knowledge, when compared to other Maasai communities. However, in Sekenani, plants are used much less frequently for manufacturing tools, and ...
... In case of the Sekenani Maasai, the recent change from a nomadic to a more sedentary lifestyle has not, thus far lead to a dramatic loss of traditional plant knowledge, when compared to other Maasai communities. However, in Sekenani, plants are used much less frequently for manufacturing tools, and ...
A weed risk assessment system for new conservation weeds in New
... At least 2000 exotic plant species have become naturalised in New Zealand, resulting in an equal proportion of exotic to native species in the wild flora (Wilton & Breitwieser 2000). A naturalised species is one that forms a minimum of one self-sustaining population in the wild ‘away’ from, or not m ...
... At least 2000 exotic plant species have become naturalised in New Zealand, resulting in an equal proportion of exotic to native species in the wild flora (Wilton & Breitwieser 2000). A naturalised species is one that forms a minimum of one self-sustaining population in the wild ‘away’ from, or not m ...
Hierarchical Bayesian models in ecology: Reconstructing
... the second column is a vector of autocorrelation variables, defined in Eq. (2), and the remaining columns contain the observed abundance values yn(x1, x2) for all species n and all locations (x1, x2) in segment h: ξifi(h) − 1 ≤xi b ξifi(h), i∈{1, 2}. This so-called g-prior is widely used in Bayesian ...
... the second column is a vector of autocorrelation variables, defined in Eq. (2), and the remaining columns contain the observed abundance values yn(x1, x2) for all species n and all locations (x1, x2) in segment h: ξifi(h) − 1 ≤xi b ξifi(h), i∈{1, 2}. This so-called g-prior is widely used in Bayesian ...
MOOREA`S NEWEST INVASIVE SPECIES: THE DISTRIBUTION
... Lepidodactylus lugubris, Gehyra oceanica and Gehyra insulensis). This was done with an island wide in-person and online survey, to determine where existing populations are, as well as a series of experimental trials to determine the behaviors of P. laticauda, when in competition with other gecko spe ...
... Lepidodactylus lugubris, Gehyra oceanica and Gehyra insulensis). This was done with an island wide in-person and online survey, to determine where existing populations are, as well as a series of experimental trials to determine the behaviors of P. laticauda, when in competition with other gecko spe ...
watershed plan - Fish and Wildlife Compensation Program
... developed to guide the maintenance, recovery and/or use of specific species and ecosystems. These plans may include specific performance measures and targets. Fisheries and Oceans Canada Under the Fisheries Act, DFO is the primary agency responsible for conserving and managing Canada‟s fisheries, in ...
... developed to guide the maintenance, recovery and/or use of specific species and ecosystems. These plans may include specific performance measures and targets. Fisheries and Oceans Canada Under the Fisheries Act, DFO is the primary agency responsible for conserving and managing Canada‟s fisheries, in ...
Costs and benefits of biological control of invasive alien
... question, under a scenario of no control. These authorities had each spent more than 25 years conducting field studies on the weeds concerned. We deducted the areas of each of the vegetation types that had been transformed from the original extent of natural vegetation (vegetation types and transfor ...
... question, under a scenario of no control. These authorities had each spent more than 25 years conducting field studies on the weeds concerned. We deducted the areas of each of the vegetation types that had been transformed from the original extent of natural vegetation (vegetation types and transfor ...
OBSERVATIONS RELATIVE TO CLAIMS OF DISAPPEARANCE OF
... from an 1895 survey, resulted in a claim that 155 taxa were lost. Hamlin et al. (2012) noted that this paper has been cited widely for its conclusion that many taxa had been lost in the study area. (Primack et al. 2009). In this study Primack and some of his students studied Concord’s flora between ...
... from an 1895 survey, resulted in a claim that 155 taxa were lost. Hamlin et al. (2012) noted that this paper has been cited widely for its conclusion that many taxa had been lost in the study area. (Primack et al. 2009). In this study Primack and some of his students studied Concord’s flora between ...
Fish population size, and not density, as the determining factor of
... parameters are, to some extent, determined by characteristics of the host population or of its habitat. Recent studies have supported predictions derived from epidemiological models regarding the influence of host population density : parasite abundance and parasite species richness are expected to i ...
... parameters are, to some extent, determined by characteristics of the host population or of its habitat. Recent studies have supported predictions derived from epidemiological models regarding the influence of host population density : parasite abundance and parasite species richness are expected to i ...
newly emergent and future threats of alien species to pacific birds
... examples of the dilemma created by alien species introductions; this is especially clear with the ungulates. Ungulates have been the most destructive group for native ecosystems but are among the most important groups economically (Cuddihy and Stone 1990). Other herbivorous and frugivorous vertebrat ...
... examples of the dilemma created by alien species introductions; this is especially clear with the ungulates. Ungulates have been the most destructive group for native ecosystems but are among the most important groups economically (Cuddihy and Stone 1990). Other herbivorous and frugivorous vertebrat ...
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.