10/4/06 version
... sense, two plants do not compete as long as the water-content and nutrients, the heat and light ...
... sense, two plants do not compete as long as the water-content and nutrients, the heat and light ...
Common Name: COOSAWATTEE CRAYFISH Scientific Name
... Diet: No studies of the Coosawattee crayfish are known. Crayfishes are considered opportunistic omnivores and are likely to feed on live and decaying vegetation, aquatic insect larvae, small fishes, and dead animal matter. Life History: Stream dwelling crayfishes typically hide during the day and co ...
... Diet: No studies of the Coosawattee crayfish are known. Crayfishes are considered opportunistic omnivores and are likely to feed on live and decaying vegetation, aquatic insect larvae, small fishes, and dead animal matter. Life History: Stream dwelling crayfishes typically hide during the day and co ...
Kratina Food Web Persistence 2015 Accepted
... additive nonprey effects. These findings suggest that non-trophic interaction modification is ...
... additive nonprey effects. These findings suggest that non-trophic interaction modification is ...
Combined effects of salinity and temperature on survival and
... (widely distributed throughout the Old World). Additional information on population locations and biogeography is available in Triantaphyllidis et al. (1998). Artemia have been widely used as model organisms for biochemical, physiological, genetic and ecological studies with more than 5000 published ...
... (widely distributed throughout the Old World). Additional information on population locations and biogeography is available in Triantaphyllidis et al. (1998). Artemia have been widely used as model organisms for biochemical, physiological, genetic and ecological studies with more than 5000 published ...
Burrowing Habits, Selections, and Behaviors of Four Common
... and can escape the terrarium if the top is in a reachable distance. They have the capability of a vertical climb at least a distance equivalent to the length of their longest clawed limb fully extended to the furthest outstretched walking leg. The highest level of soil allowable in the terrarium sho ...
... and can escape the terrarium if the top is in a reachable distance. They have the capability of a vertical climb at least a distance equivalent to the length of their longest clawed limb fully extended to the furthest outstretched walking leg. The highest level of soil allowable in the terrarium sho ...
Marine seaweed invasions Josefin Sagerman Impacts and biotic resistance in native ecosystems
... report six cases (single response variable in single study) where the effect of a non-native seaweed on a ecosystem function has been tested. As a contrast Vilà et al. (2011) reports 368 corresponding cases from invaded vascular plant communities (despite making a considerably more narrow data selec ...
... report six cases (single response variable in single study) where the effect of a non-native seaweed on a ecosystem function has been tested. As a contrast Vilà et al. (2011) reports 368 corresponding cases from invaded vascular plant communities (despite making a considerably more narrow data selec ...
THE IVORY ISSUE: quick and easy questions and answers
... In many countries, conflict killings and the trade in big cat parts go hand in hand; the bones and pelts of leopards killed primarily due to retaliation for livestock losses also enter illegal trade. ...
... In many countries, conflict killings and the trade in big cat parts go hand in hand; the bones and pelts of leopards killed primarily due to retaliation for livestock losses also enter illegal trade. ...
Information Sheet on Network Sites - East Asian
... species such as Clematis cadmia, Rosa clinophylla and Oxystelma secamone. Open water areas are characterised by free-floating species such as Pistia stratiotes and Salvinia natans, anchored, submerged species such as Vallisneria spiralis, Potamogeton crispus and Aponogeton echinatus, suspended speci ...
... species such as Clematis cadmia, Rosa clinophylla and Oxystelma secamone. Open water areas are characterised by free-floating species such as Pistia stratiotes and Salvinia natans, anchored, submerged species such as Vallisneria spiralis, Potamogeton crispus and Aponogeton echinatus, suspended speci ...
Fungal fidelity in the myco‐heterotroph‐to‐autotroph life cycle of
... Martens (1992) listed five hypotheses that have attempted to explain the evolution of plants that accumulate high concentrations of metals. These hypotheses predict that the ability to accumulate metals and metalloids evolved to provide (1) tolerance to, or disposal of, the elements from the plant, ...
... Martens (1992) listed five hypotheses that have attempted to explain the evolution of plants that accumulate high concentrations of metals. These hypotheses predict that the ability to accumulate metals and metalloids evolved to provide (1) tolerance to, or disposal of, the elements from the plant, ...
Switzerland
... processes and is therefore of importance for the conservation of intraspecific variation of many species. This fact is caused by a huge variation of habitat (steep gradients of abiotic factors within relatively small regions). Furthermore the topographic structure sometimes leads to increased isolat ...
... processes and is therefore of importance for the conservation of intraspecific variation of many species. This fact is caused by a huge variation of habitat (steep gradients of abiotic factors within relatively small regions). Furthermore the topographic structure sometimes leads to increased isolat ...
The Crayfish Snakes of North America By Jake A. Pruett Aquatic
... The historical assignment of four species to the genus Regina does not reflect the actual evolutionary relationships of the members of this group and other natricine snakes. It appears that the genus is polyphyletic and should be split into three separate genera. The similarities in morphology obser ...
... The historical assignment of four species to the genus Regina does not reflect the actual evolutionary relationships of the members of this group and other natricine snakes. It appears that the genus is polyphyletic and should be split into three separate genera. The similarities in morphology obser ...
Body size distributions in North American freshwater fish: smallscale
... Abstract – The ecosystem size/trophic structure hypothesis predicts that the shape of body size distributions will change with ecosystem size because of increases in the relative importance of large, predatory, species. I test the hypothesis by examining the statistical moments, as measures of shape ...
... Abstract – The ecosystem size/trophic structure hypothesis predicts that the shape of body size distributions will change with ecosystem size because of increases in the relative importance of large, predatory, species. I test the hypothesis by examining the statistical moments, as measures of shape ...
Using species distribution and occupancy modeling to guide survey
... fine spatial scales. We provide a case study of using distribution and occupancy modeling in unison to direct survey efforts, provide estimates of species presence/absence, and to identify local and landscape features important for species occurrence. The focal species for our study was Ambystoma jef ...
... fine spatial scales. We provide a case study of using distribution and occupancy modeling in unison to direct survey efforts, provide estimates of species presence/absence, and to identify local and landscape features important for species occurrence. The focal species for our study was Ambystoma jef ...
Ragnar Arnason*
... This paper considers the optimal utilization and management of ecosystem fisheries. It is divided into two main sections. In the first section, a general aggregative ecosystem fishery model is developed and its properties analysed. A major result of this part of the paper is that ecosystem fisheries ...
... This paper considers the optimal utilization and management of ecosystem fisheries. It is divided into two main sections. In the first section, a general aggregative ecosystem fishery model is developed and its properties analysed. A major result of this part of the paper is that ecosystem fisheries ...
General impacts of the feral pig (Sus scrofa) Rooting by pigs disturbs
... diet, especially for breeding and growth (McIlroy, 1990), may be what drives predation of animals. McIlroy (1989) states that earthworms are one of the most common sources of animal protein in the diet of feral pigs. Pav Ecol (1992) found that feral pigs harvested over 95% of the available worms at ...
... diet, especially for breeding and growth (McIlroy, 1990), may be what drives predation of animals. McIlroy (1989) states that earthworms are one of the most common sources of animal protein in the diet of feral pigs. Pav Ecol (1992) found that feral pigs harvested over 95% of the available worms at ...
Metacommunity Dynamics: Decline of Functional
... Background: The metacommunity framework is crucial to the study of functional relations along environmental gradients. Changes in resource grain associated with increasing habitat fragmentation should generate uncoupled responses of interacting species with contrasted dispersal abilities. Methodolog ...
... Background: The metacommunity framework is crucial to the study of functional relations along environmental gradients. Changes in resource grain associated with increasing habitat fragmentation should generate uncoupled responses of interacting species with contrasted dispersal abilities. Methodolog ...
A Cultural Niche Construction Theory of Initial
... theory (e.g., Kennett and Winterhalder 2006; Piperno 2006, 2011), are based on a ‘‘unidirectional’’ definition of adaptation that was the consensus within evolutionary theory up through the 1970s and still dominates today. According to this traditional definition, adaptation is a one-way street in w ...
... theory (e.g., Kennett and Winterhalder 2006; Piperno 2006, 2011), are based on a ‘‘unidirectional’’ definition of adaptation that was the consensus within evolutionary theory up through the 1970s and still dominates today. According to this traditional definition, adaptation is a one-way street in w ...
Chapter 53
... • For example, nematodes (roundworms) parasitize a species of treedwelling ants and lay eggs in the ant’s posterior-most body region, causing it to appear red instead of the normal black color. • Infected ants also hold the region up in a “flagging” posture, making them look like berries; as a resul ...
... • For example, nematodes (roundworms) parasitize a species of treedwelling ants and lay eggs in the ant’s posterior-most body region, causing it to appear red instead of the normal black color. • Infected ants also hold the region up in a “flagging” posture, making them look like berries; as a resul ...
effects of air temperature, altitude and local - CREA Mont
... increase risk of frost damage for early flowering species (Inouye 2008). As such, species might be expected to show a delayed phenology at high altitude compared to low altitude in order to prevent risk of frost damage. However, species have to complete their reproduction cycle within the relatively ...
... increase risk of frost damage for early flowering species (Inouye 2008). As such, species might be expected to show a delayed phenology at high altitude compared to low altitude in order to prevent risk of frost damage. However, species have to complete their reproduction cycle within the relatively ...
Coprophilic dipteran community associated with horse
... a major role in the dung utilization. However, little is known about the coprophilous fly species compared to studies conducted on dung beetles (Hammer, 1941; Nichols et al., ...
... a major role in the dung utilization. However, little is known about the coprophilous fly species compared to studies conducted on dung beetles (Hammer, 1941; Nichols et al., ...
Bathymetric trends in demersal fish size: is there a
... heights between 2 and 4 m, 20 mm mesh size) on each cruise. Fish were collected by means of bottom trawl nets during daytime to avoid possible vertical migration a t night. Each haul consisted of 30 min trawls at 3 knots, thereby sweeping 1.5 nautical miles. For each haul, the total number and weigh ...
... heights between 2 and 4 m, 20 mm mesh size) on each cruise. Fish were collected by means of bottom trawl nets during daytime to avoid possible vertical migration a t night. Each haul consisted of 30 min trawls at 3 knots, thereby sweeping 1.5 nautical miles. For each haul, the total number and weigh ...
Interspecific competition in natural plant
... In conclusion, species from nutrient-poor habitats are usually not characterized by high nutrient uptake kinetics, except in situations where nutrient-rich patches occur ( Robinson and Van Vuuren, 1998). Biomass allocation and competitive ability for nutrient uptake It seems logical to assume that s ...
... In conclusion, species from nutrient-poor habitats are usually not characterized by high nutrient uptake kinetics, except in situations where nutrient-rich patches occur ( Robinson and Van Vuuren, 1998). Biomass allocation and competitive ability for nutrient uptake It seems logical to assume that s ...
Homogenization, Differentiation, and the Widespread Alteration of
... Abstract.—Widespread introduction of common species coupled with extirpation of endemic species can cause fish assemblages to lose much of their regional uniqueness. This process of biotic homogenization contrasts with biotic differentiation, whereby initially similar fish faunas diverge due to intr ...
... Abstract.—Widespread introduction of common species coupled with extirpation of endemic species can cause fish assemblages to lose much of their regional uniqueness. This process of biotic homogenization contrasts with biotic differentiation, whereby initially similar fish faunas diverge due to intr ...
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.