Cirripedia: The Barnacles - Marine Biodiversity Center
... valved shell and a body organization somewhat like that of the adult. It cannot feed, but swims using its six pairs of thoracic legs. Periodically it settles to the bottom and crawls about on its first antennae, testing the substratum for suitable places to attach. Settlement in a spot favorable for ...
... valved shell and a body organization somewhat like that of the adult. It cannot feed, but swims using its six pairs of thoracic legs. Periodically it settles to the bottom and crawls about on its first antennae, testing the substratum for suitable places to attach. Settlement in a spot favorable for ...
Methods to control and eradicate non
... Shooting is useful for most of the considered groups. Tracking dogs, Judas goats, aircraft, marksmanship improvement devices and silencers are some auxiliary means. Their usefulness depend on the species an on the local conditions. Poisoning has been used against most of the groups, but its main apt ...
... Shooting is useful for most of the considered groups. Tracking dogs, Judas goats, aircraft, marksmanship improvement devices and silencers are some auxiliary means. Their usefulness depend on the species an on the local conditions. Poisoning has been used against most of the groups, but its main apt ...
CHIHUAHUA PRESENTATION
... According to studies by the faculty of Agro-technological Science of the Chihuahua State University, as well as suggestions, inspections and written communications by the State and Municipal Civil Protection Offices, it was determined that these species could not recover, because the freezing temper ...
... According to studies by the faculty of Agro-technological Science of the Chihuahua State University, as well as suggestions, inspections and written communications by the State and Municipal Civil Protection Offices, it was determined that these species could not recover, because the freezing temper ...
8: Two Case Studies: Non-Indigeneous Species in Hawaii and Florida
... desirable species” in Hawaii (40). Other scientists, however, question whether monitoring adequately assesses other important impacts, such as competition with indigenous species (55). Still, most new problem species today are believed to be the result of accidental or smuggled introductions. The ra ...
... desirable species” in Hawaii (40). Other scientists, however, question whether monitoring adequately assesses other important impacts, such as competition with indigenous species (55). Still, most new problem species today are believed to be the result of accidental or smuggled introductions. The ra ...
Competition and Facilitation: a Synthetic Approach to Interactions in
... Shifts in facilitation and competition among aerenchymous wetland plants occur as temperatures change in anaerobic substrates. Myosotis laxa, a small herb common in wetlands of the northern Rockies, benefited from soil oxygenation when grown with Typha latifolia at low soil temperatures in greenhous ...
... Shifts in facilitation and competition among aerenchymous wetland plants occur as temperatures change in anaerobic substrates. Myosotis laxa, a small herb common in wetlands of the northern Rockies, benefited from soil oxygenation when grown with Typha latifolia at low soil temperatures in greenhous ...
Lessons from primary succession for restoration of severely
... et al. 2007). This can happen when too much fertilizer favors fast-growing weeds over slow-growing natives, when nutrient ratios become altered, or when either of these effects leads to different successional trajectories. The utilization of nitrogenfixers may provide an optimum nutrient balance, but ...
... et al. 2007). This can happen when too much fertilizer favors fast-growing weeds over slow-growing natives, when nutrient ratios become altered, or when either of these effects leads to different successional trajectories. The utilization of nitrogenfixers may provide an optimum nutrient balance, but ...
Effects of groundcover management on ground beetles (Coleoptera
... samples in an apple orchard reflected lower carabid abundance in tilled than in non-tilled plots although this difference was not observed in pitfall trap catches (Holliday and Hagley, 1984). The type of orchard management system also affected carabid fauna (Pearsall and Walde, 1995). For instance, ...
... samples in an apple orchard reflected lower carabid abundance in tilled than in non-tilled plots although this difference was not observed in pitfall trap catches (Holliday and Hagley, 1984). The type of orchard management system also affected carabid fauna (Pearsall and Walde, 1995). For instance, ...
Special Feature
... by yet another species?’’ For evolutionary biologists, diversity is a product of gene–development–environment interactions that produce novel phenotypes, but the sine qua non is just the right sort of genetic variation. At the recent Annual Meeting of the ESA, Roughgarden (2002) characterized these ...
... by yet another species?’’ For evolutionary biologists, diversity is a product of gene–development–environment interactions that produce novel phenotypes, but the sine qua non is just the right sort of genetic variation. At the recent Annual Meeting of the ESA, Roughgarden (2002) characterized these ...
Lessons from primary succession for restoration of severely
... et al. 2007). This can happen when too much fertilizer favors fast-growing weeds over slow-growing natives, when nutrient ratios become altered, or when either of these effects leads to different successional trajectories. The utilization of nitrogenfixers may provide an optimum nutrient balance, but ...
... et al. 2007). This can happen when too much fertilizer favors fast-growing weeds over slow-growing natives, when nutrient ratios become altered, or when either of these effects leads to different successional trajectories. The utilization of nitrogenfixers may provide an optimum nutrient balance, but ...
The effect of grazing on biodiversity in the grassland biome
... and -trophic levels. However, a rapid assessment approach is crucial to assess the current level of biodiversity, overlapping between all aspects (plants, invertebrates, etc.). It is also important to determine what constitutes adequate biodiversity conservation. For current systems, we need to know ...
... and -trophic levels. However, a rapid assessment approach is crucial to assess the current level of biodiversity, overlapping between all aspects (plants, invertebrates, etc.). It is also important to determine what constitutes adequate biodiversity conservation. For current systems, we need to know ...
Roles of parasites in animal invasions
... birth or growth rates decrease, as the density of the population increases. Enemy release hypothesis: invading organisms might lose parasites (and other enemies) during invasion [24]. The ‘release’ from the constraints of natural enemies might enable populations of invading organisms to increase at ...
... birth or growth rates decrease, as the density of the population increases. Enemy release hypothesis: invading organisms might lose parasites (and other enemies) during invasion [24]. The ‘release’ from the constraints of natural enemies might enable populations of invading organisms to increase at ...
LOCAL NATURE CONSERVATION SITES
... Conservation Sites (LNCS) as part of the family of areas given protection from development except where public benefits clearly outweigh the nature conservation value of the site. The plan notes that the LNCS were developed through consultation with expert stakeholders and they replace the previous ...
... Conservation Sites (LNCS) as part of the family of areas given protection from development except where public benefits clearly outweigh the nature conservation value of the site. The plan notes that the LNCS were developed through consultation with expert stakeholders and they replace the previous ...
Phenotypic Plasticity
... interaction then depends on the past reciprocal responses between the individuals. In this simplified view, spatial aspects of the biotic and abiotic environment are assumed to be constant. The decomposition of the environmental component of the interaction norm into temporal (Fig. 3) and spatial as ...
... interaction then depends on the past reciprocal responses between the individuals. In this simplified view, spatial aspects of the biotic and abiotic environment are assumed to be constant. The decomposition of the environmental component of the interaction norm into temporal (Fig. 3) and spatial as ...
Phenotypic Plasticity in the Interactions and Evolution of Species
... interaction then depends on the past reciprocal responses between the individuals. In this simplified view, spatial aspects of the biotic and abiotic environment are assumed to be constant. The decomposition of the environmental component of the interaction norm into temporal (Fig. 3) and spatial as ...
... interaction then depends on the past reciprocal responses between the individuals. In this simplified view, spatial aspects of the biotic and abiotic environment are assumed to be constant. The decomposition of the environmental component of the interaction norm into temporal (Fig. 3) and spatial as ...
Evaluating least-cost model predictions with empirical
... Abstract: The loss and fragmentation of forest habitats by human land use are recognised as important factors influencing the decline of forest-dependent fauna. Mammal species that are dependent upon forest habitats are particularly sensitive to habitat loss and fragmentation because they have highl ...
... Abstract: The loss and fragmentation of forest habitats by human land use are recognised as important factors influencing the decline of forest-dependent fauna. Mammal species that are dependent upon forest habitats are particularly sensitive to habitat loss and fragmentation because they have highl ...
Module 6 Ecological Principles - Members
... strongly influenced by both small and large changes in the shape or topography of the land or sea. At a large scale, ecological changes are often expressed in relation to latitude or altitude. These are convenient surrogate measures that represent the temperature, moisture, and wind and radiation re ...
... strongly influenced by both small and large changes in the shape or topography of the land or sea. At a large scale, ecological changes are often expressed in relation to latitude or altitude. These are convenient surrogate measures that represent the temperature, moisture, and wind and radiation re ...
Bacanora and Sotol: So Far, So Close
... describes Agave angustifolia being used as food and spirits among the Guarijío and Mayo, as well as by the regional mestizos. Felger and Moser (1985), whose work among the Seri or Comca’ac resulted in the most complete ethnobotanic study in Northwest Mexico, confirmed that this species and other aga ...
... describes Agave angustifolia being used as food and spirits among the Guarijío and Mayo, as well as by the regional mestizos. Felger and Moser (1985), whose work among the Seri or Comca’ac resulted in the most complete ethnobotanic study in Northwest Mexico, confirmed that this species and other aga ...
Scatter-and clump-dispersal and seedling demography
... Still larger mammals (11-7,500 kg) digest many seeds that they eat, but deposit survivors in massive clumps. For instance, 170 and 245 living Pithecellobium saman seeds were found in two tapir (Tapirus bairdii; 225-300 kg) dung heaps (Janzen 1981 a), and up to 81 Enterolobium cyeloearpum seeds in du ...
... Still larger mammals (11-7,500 kg) digest many seeds that they eat, but deposit survivors in massive clumps. For instance, 170 and 245 living Pithecellobium saman seeds were found in two tapir (Tapirus bairdii; 225-300 kg) dung heaps (Janzen 1981 a), and up to 81 Enterolobium cyeloearpum seeds in du ...
Overview of El Carmen Project, Maderas del Carmen, Coahuila
... the Cuatro Ciénegas area (Gilmore 1947), and recent discoveries of Indian paintings and pictographs depicting elk just south of the Maderas del Carmen suggest that elk were in the area (Ing. R. Rodriguez Garza, pers. comm.). The small herd of elk that have been introduced to the project site are pro ...
... the Cuatro Ciénegas area (Gilmore 1947), and recent discoveries of Indian paintings and pictographs depicting elk just south of the Maderas del Carmen suggest that elk were in the area (Ing. R. Rodriguez Garza, pers. comm.). The small herd of elk that have been introduced to the project site are pro ...
Vol. 127, No. 3 The American Naturalist March 1986 SPECIES
... miniature model of the history of the Plethodontidae. Further evidence for that assertion comes from the probable origin of the Plethodontidae and their bestknown anatomical characteristic, lunglessness. This trait is associated with the mountain-stream habitat, where lungs are not only unnecessary ...
... miniature model of the history of the Plethodontidae. Further evidence for that assertion comes from the probable origin of the Plethodontidae and their bestknown anatomical characteristic, lunglessness. This trait is associated with the mountain-stream habitat, where lungs are not only unnecessary ...
flamingo fact sheet - World Animal Foundation
... Flamingos are known to stand on one leg while sleeping. This is done in order to minimize body heat escaping into the water in which their feet are submerged. EXTINCT SPECIES: Flamingos were native to Australia 20 million years ago. ...
... Flamingos are known to stand on one leg while sleeping. This is done in order to minimize body heat escaping into the water in which their feet are submerged. EXTINCT SPECIES: Flamingos were native to Australia 20 million years ago. ...
Species introduction a major topic in vegetation
... vegetation development on 58 oldfields, initially surveyed in 1975, in a peripheral limestone mountain area in the Czech Republic. Spontaneous succession after 30 yr had led either to deciduous woodlands on deeper soils or species-rich shrubby dry grasslands on shallow limestone soils. The study cle ...
... vegetation development on 58 oldfields, initially surveyed in 1975, in a peripheral limestone mountain area in the Czech Republic. Spontaneous succession after 30 yr had led either to deciduous woodlands on deeper soils or species-rich shrubby dry grasslands on shallow limestone soils. The study cle ...
BIOLOGICAL ENVIRONMENT REPORT
... overflows and is contiguous with various swamps and small creeks. Roper Creek is adjacent to this lagoon and the site access road. It provides wet season habitat, plus remnant pools for various fauna species for part of the dry season. The lagoon has not been formally assigned a conservation status ...
... overflows and is contiguous with various swamps and small creeks. Roper Creek is adjacent to this lagoon and the site access road. It provides wet season habitat, plus remnant pools for various fauna species for part of the dry season. The lagoon has not been formally assigned a conservation status ...
Gibb and Hochuli 2004 - Department of Biological Science
... contention. We examined the effect of the dominant ant Iridomyrmex purpureus on the ant fauna of sandstone outcrops in southeastern Australia. We conducted a mensurative survey using transect counts to compare ant assemblages at eight outcrops with, and eight without I. purpureus. Using cages, we th ...
... contention. We examined the effect of the dominant ant Iridomyrmex purpureus on the ant fauna of sandstone outcrops in southeastern Australia. We conducted a mensurative survey using transect counts to compare ant assemblages at eight outcrops with, and eight without I. purpureus. Using cages, we th ...
Stable isotopes as trophic tracers: combining field sampling and
... discrimination. Most explanations of the difference between benthic and pelagic algal signatures have in common that they can be expected to vary with season, with productivity level of the microalgae, with current velocity above the bed, or other factors. Consequently, one could expect seasonal dif ...
... discrimination. Most explanations of the difference between benthic and pelagic algal signatures have in common that they can be expected to vary with season, with productivity level of the microalgae, with current velocity above the bed, or other factors. Consequently, one could expect seasonal dif ...
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.